Vol 170 No 1
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Date submitted2006-07-21
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Date accepted2006-09-16
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Date published2007-01-01
Experience of studying natural and technogenic processes in the underground space of St. Petersburg (on the example of the Obukhovo-Rybatskoye tunnels)
- Authors:
- O. Yu. Alexandrova
It is marked out the levels of development in Saint-Petersburg underground space, where separately should be taken in consideration the influence of structural-tectonic, engineering geological, hydrogeological, geoecological factors on an occasion for the display of exogenous processes and as a result of buildings stability. Main natural and technological factors, which play negative part in development of prolonged and uneven deformations of the tunnels «Obuhovo – Ribackoe» in Saint-Petersburg subway are considered in the article. It is emphasized that the character and intensity of tunnel’s throw depends on conditions, physico- mechanical rocks and soils properties, hydrodynamical and hydrochemical groundwater conditions, as well as gas-dynamic phenomenon. It is shown the profound effect of biocorrosion processes in lining material destruction.
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Date submitted2006-07-02
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Date accepted2006-09-30
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Date published2007-01-01
Features of geometrization of ore bodies with the use of computer technologies (on the example of Yakovlevskoe deposit)
- Authors:
- I. V. Apukhtina
Modern computer technologies, widely used nowadays in deposit modeling and reserves estimation, require a deep understanding of their algorithmic basis for comparison with traditional methods of reserves estimation. In this paper we attempted to optimize the computer methodology of geometrization of ore bodies at the Yakovlevskoye deposit to use the results of exploration works of various stages.
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Date submitted2006-07-05
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Date accepted2006-09-13
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Date published2007-01-01
Dissection and correlation of red-colored strata on the basis of X-ray diffractometric analysis of clay fraction minerals
- Authors:
- A. G. Bogatyreva
Analysis of red terrigenous rocks with application of the X-ray diffraction method was carried out as part of the research on the example of Upper-Sorbian sediments of the Southeastern part of the White Sea region. The first results of the experimental research are considered and the possibility was shown to differentiate and correlate red beds basing on x-ray characteristics of fine fraction of the rocks.
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Date submitted2006-07-21
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Date accepted2006-09-04
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Date published2007-01-01
History of lithogenesis of Lower Permian shikhans
- Authors:
- A. Z. Kagarmanova
The share of gas and oil production from buried reef massifs is constantly increasing. It explains the necessity to carry out geological investigations of hydrocarbon traps such as organogenic reef constructions. But usually drilling data are not sufficient for construction of geological model of the buried reef. Shikhans are surface-emerged massifs and thus they provide unique research material. This paper presents investigation results of the Shakh – Tau and Tora – Tau massifs as well as data on Shakh – Tau quarry mining. This allows detailed studies of structural peculiarities of oil-and-gas prospective Lower Permian reef massifs, which are located in foredeeps, and especially their rock formation and collector properties.
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Date submitted2006-07-27
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Date accepted2006-09-12
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Date published2007-01-01
Peculiarities of morphology of composition and structure of zircons from piterlites of Salma granite pluton (Northern Ladoga area)
- Authors:
- E. S. Kiseeva
Accessory zircon from metasomatically altered granites of the Salmi intrusion has been studied by means of optic and SEM microscopy, accompanied with electron-probe analysis of trace elements. Peculiarities of morphology, inner structure and composition of the zircons were revealed. The correlation of those to the rock alteration degree has been established. Statistical pattern of compositional variations of zircons are estimated. The results are presented in the paper.
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Date submitted2006-07-11
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Date accepted2006-09-16
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Date published2007-01-01
Engineering-geological and geo-ecological assessment of the stability of the rich iron ores of the Yakovlevsky mine (KMA)
- Authors:
- P. V. Kotyukov
The Yakovlevsky deposit of the Kursk Magnetic Anomaly (KMA) is characterized with large reserves and high grades of iron ores which are products of chemical weathering of ferruginous quartzites in Pre-Paleozoic period. High-grade iron ores (HGIO) are non-compacted variations with high porosity and even macroporosity. Their occurrence depth is over 500 m. The article analyses granulometric composition, physical properties and strength parameters of various highgrade iron ore types. Acceptable level of hydrodynamic pressure is calculated with the view of the pillar width, which is equal to 53 m, and various widths of individual working spans. Forecast time of underground waters penetration from the overlying Low Carboniferous aquifer horizon to the - 370 m horizon is calculated. Conclusions are made on negative impact of underground waters penetration which leads to secondary watering of the high-grade iron ores, a sharp decrease in their durability that creates preconditions for inrush formation.
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Date submitted2006-07-04
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Date accepted2006-09-12
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Date published2007-01-01
Peculiarities of mineral composition and geochemical characteristics of sulfide-platinometallic ore deposits of the Generalskaya Mountain (Kola Peninsula)
- Authors:
- N. S. Kropacheva
The paper studies results of petrographic, mineralogical, and geochemical investigation of 10 typical rock and ore samples from massif of Mt. Generalskaya. Methods of optical and electron microscopy of polished sections were used for determination of the platinum group minerals. State-of-the-art analytical methods (XRFA, ICP-AES, ICP-MS and AAA) were used in petrochemical and geochemical studies to determine chemical composition and contents of trace elements in the samples. Mineralogical and geochemical peculiarities of sulphide-PGE mineralization have been revealed as the result of this investigation.
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Date submitted2006-07-16
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Date accepted2006-09-13
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Date published2007-01-01
Mechanism of artificial well curvature by continuous sliding deviators
- Authors:
- Yu. T. Morozov
- A. M. Mochulovsky
The mechanism of artificial borehole deviation by sliding whipstocks continuous action, based on destruction of a borehole wall during its lateral milling by displacing bit under action of arising rejecting effort. For a smooth set of deviation it is offered to adjust rejecting effort and for achievement of the maximum angle – to adjust frequency of bit rotation.
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Date submitted2006-07-08
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Date accepted2006-09-27
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Date published2007-01-01
Environmentally dangerous elements and minerals in raw materials, products and wastes of the OAO Karelsky okatysh (Kostomuksha)
- Authors:
- Ya. G. Panteleeva
The paper is based on experience of carrying out ecological and geochemical research in impact areas of the ‘Karelsky Okatysh’ plant and directly in production workshops. Mineral composition of ores is estimated quantitatively. Dynamics of ore delivery to the plant in 2005 is studied. Environmentally hazardous types of ores are revealed. Environmentally hazardous minerals are determined and levels of toxic element accumulation in these minerals are estimated. High concentration of several toxic heavy elements was revealed in dust accumulations of electrostatic cleaners in the pellet production workshop. Comparison of polluting element contents in the second and the third cleaners with the first roasting kiln and all the three kilns is given. Contents of a number of toxic elements exceed the Clarke level of the earth’s crust as well as maximum permissible concentration.
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Date submitted2006-07-21
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Date accepted2006-09-06
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Date published2007-01-01
Engineering and geological aspects of recultivation of territories disturbed by open mining operations
- Authors:
- G. B. Pospekhov
Requirements for construction and mining works have always been taken into account in engineering geology. At present moment the most complicated tasks in mining practice are connected with reclamation of mined-out space. Operation of over two hundred coal mines and coal pits was stopped during the restructuring period in the Russian coal industry and they are currently go through different stages of the mine abandonment process. Land reclamation is a topical issue in open-cast mining, where the main task is to maintain stability during the recultivation period and subsequent use of the worked-out pits. Reliability of geomechanical calculation depends on the quality of geological data. Efficiency of activities to eliminate impact from mining works on surrounding environment is significantly decreasing when such data is incomplete or unavailable.
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Date submitted2006-07-22
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Date accepted2006-09-10
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Date published2007-01-01
Geochemical peculiarities of noble-metal mineralization of the Klimovskaya area (the White Sea zone of Northern Karelia)
- Authors:
- O. A. Savicheva
This paper considers peculiarities in element composition of geological objects of the Klimovskaya area, which is a part of the larger Chupa-Louhi area within the White Sea mobile belt of Northern Karelia. It has been revealed that the following four main geochemical types of ore mineralization are characteristic of this area: Pt, Pd; Au, Bi, Ag; Cu, Ni, Co; Pb, Zn, Cd. Presence of two perspective types of noble metal mineralization has been confirmed, which are sulfide bearing metasomatic rocks replacing amphibolites, having essentially palladium with minor platinum mineralization, and quartz enriched zones with gold-bismuth-silver mineralization. Secondary halos have been detected in loose deposits of the local Keretsky area which makes it possible to forecast zones of Pt-Pd and Au-Bi-Ag mineralization in bedrocks.
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Date submitted2006-07-14
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Date accepted2006-09-01
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Date published2007-01-01
Nano-irregularities in plagioclases. Features of small-angle X-ray scattering from crystalline mineral powders
- Authors:
- A. P. Simakov
Powders of irizing and non-irizing plagioclases (labrador and albite) were studied using a small-angle X-ray camera. The obtained curves of X-ray small-angle scattering in the coordinates "scattering intensity" - "backspace vector modulus" on a double logarithmic scale reveal a pronounced rectilinear dependence. The fractal dimensionality for these curves is D=2. This indicates that the particles of the studied plagioclase powders have a flat surface in a wide range of sizes from 10 to 150nm. It is assumed that during mineral grinding, fractures occur predominantly along certain planes. A similar scattering pattern is observed on quartz powders: a rectilinear dependence and fractal dimension D=2 are obtained. It is assumed that this peculiarity of X-ray scattering is not related to the property of mineral cleavage.
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Date submitted2006-07-04
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Date accepted2006-09-06
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Date published2007-01-01
Structure and mathematical model of asynchronous frequency electric drive without main coordinate sensors
- Authors:
- A. S. Ivanov
Wind is one of the most important alternative sources of energy, the distinguishing features of which are zero cost and no negative impact on the environmental situation. In view of the increasingly worsening fuel and energy crisis, interest in the use of wind energy has increased significantly over the past few years. Data on the structure of a wind power plant are given. Asynchronous machine with squirrel cage rotor is considered as a generator. A model of an autonomous induction generator is constructed taking into account the nonlinearity of the magnetic circuit. The model for automatic construction of mechanical characteristic of asynchronous machine is also presented. Modeling is performed in the MatLab Simulink environment.
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Date submitted2006-07-08
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Date accepted2006-09-24
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Date published2007-01-01
Investigation of asynchronous generator of wind power plant
- Authors:
- A. V. Kudryavtsev
Nowadays wind is considered as one of the most important alternative sources of energy. It’s featured as being practically free and having no negative impact on environment. Because of increasing of the fuel-energy crisis an accent in using wind energy has quickened recently. An article given includes information about the structure of a wind turbine. The squirrel cage induction machine is considered as a generator. The model of an autonomous asynchronous generator has been built taking into account the nonlinearity of a magnetic circuit. Also it’s presented the model for plotting speed-torque characteristic of an asynchronous machine. Simulation has been made in Matlab Simulink.
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Date submitted2006-07-29
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Date accepted2006-09-12
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Date published2007-01-01
Peculiarities of calculation of bearing capacity of a conveyor with a suspended belt
- Authors:
- D. E. Lunev
In this article the new type of belt conveyors – conveyor with a pendant belt, its advantages in comparison with standard conveyors and main trends of its developing are described. Main attention is paid for the aim of determination of the regularities of the cutout forming in dependence on the way of its loading by the transported cargo. The results of the experiments, showing that the belt’s carrying ability (capacity of the gutter) to a considerable extent depends on the cargo’s angle of scope, and also that for the most types of loads the carrying ability is used most effectively when the distance between the guide ways is about 75 % of the belt’s width. Approximating dependence describing the contour of the cutout of the loaded belt is also given.
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Date submitted2006-07-01
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Date accepted2006-09-19
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Date published2007-01-01
To calculation of parameters of drilling and anchoring installation
- Authors:
- V. I. Medvedkov
- S. S. Dranov
- V. P. Shebin
Drilling and boring units, which include a hydraulic motor and anchoring mechanism, are used to attach the cutting machine. The schemes of water supply of the machine tool are analyzed and a rational variant is selected. The disadvantages of the known water motors are disclosed and the ways of their improvement are suggested. Recommendations on calculation of the parameters of the hydraulic motor, on the design of the anchoring mechanism and its calculation are developed. The result on the efficiency of light cutting machine with a new way of fixing its time is obtained.
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Date submitted2006-07-08
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Date accepted2006-09-27
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Date published2007-01-01
Reduction of wear intensity of mining machinery transmission gears by selection of rational lubrication parameters
- Authors:
- A. A. Poddubnaya
Increase of tooth gearing resource of transmissions of mining machines by energy losses minimization in gearing. Choice of rational greasing parameters of transmissions reducers. Choosing rational relations between temperature and lubricant viscosities.
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Date submitted2006-07-04
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Date accepted2006-09-17
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Date published2007-01-01
Bottom device for extraction of ferromanganese nodules from the bottom of the World Ocean and calculation of its main parameters
- Authors:
- D. V. Smirnov
After disintegration of the USSR the basic part of deposits of manganese ores appeared to be outside the Russian Federation that has led to occurrence of a problem of maintenance of the industry by own manganese raw material. An alternative source of manganese ore can become shelf deposits of manganese nodules. Now all over the world the great number of mechanisms for development of sea-bottom is submitted, but they all of them possess have some lacks. One of their main lacks is difficulty or full impossibility of conducting production works on the big depths.
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Date submitted2006-07-25
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Date accepted2006-09-06
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Date published2007-01-01
Strategy of electric energy quality assurance in power supply systems of gas pumping enterprises
- Authors:
- Yu. A. Sychev
The policy of ensuring power quality in power-supply systems of gas-transfer enterprises, which allows to determine the type of electromagnetic disturbance, it’s source and technical solution for it’s compensation, is presented in the article. The simulation has been made in Mathlab Simulink to determine the active filter parameters. The non-linear load current, the active filter compensation current and the resulting current traces has been obtained during simulation. On the base of simulation’s results it’s supposed to choose the active filter parameters for power-supply system of gas-transfer enterprise and to design the technical guidelines for active filter applying.
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Date submitted2006-07-25
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Date accepted2006-09-06
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Date published2007-01-01
Main directions of improvement of vibrating jaw crushers
- Authors:
- V. Ya. Turkin
- M. Yu. Tyagushev
- R. A. Sablin
Crushing and degradation are the greatly using process for industry. It are take up almost 20 % energy output in the country. Share capital, operation and power of costs for crushing and degradation for factories, which are use this process, equal to more 50 % their economics balance. Because cost reduction on crushing and degradation is actual tasks. Main structural layouts of jaw crushers and their tendencies in the contribution.
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Date submitted2006-07-19
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Date accepted2006-09-12
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Date published2007-01-01
Determination of 3D area of existence of spur involute meshing with a given overlapping coefficient
- Authors:
- A. S. Fokin
It is shown that the use of combined displacement in gear design makes it possible to considerably expand the area of existence of meshing with non-standard radial clearance. The influence of parameters of the rack-and-pinion producing contour on the area of existence of the meshing is presented, the technology of realization of the tantan-gential displacement in gear cutting is described.
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Date submitted2006-07-18
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Date accepted2006-09-14
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Date published2007-01-01
Optimization of stripping parameters at ascending order of steeply falling ore bodies mining
- Authors:
- E. I. Boguslavskiy
- Yu. L. Minaev
- D. Yu. Minaev
Modern stripping schemes for steeply dipping ore deposits are analyzed. Possible stripping schemes for ore body mining in the combined ascending-descending order of operations are designed. Dependences of the reduced costs on the depth of the first stage of stripping and the angle of dip of the ore body at the combined order of deposit development are established. Conclusions and recommendations are made.
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Date submitted2006-07-01
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Date accepted2006-09-30
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Date published2007-01-01
Classification of negative consequences of drilling and explosive technology on the environment during tunneling
- Authors:
- E. Yu. Vinogradov
The negative consequences of the use of drilling and blasting technology in the tunneling of transportation tunnels are considered. The forms of mechanical energy of explosion are analyzed, which cause the occurrence of phenomena leading to environmental degradation, destruction of engineering structures and negative impact on humans. The classification of the negative impact of drilling and blasting operations on the environment is proposed.
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Date submitted2006-07-14
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Date accepted2006-09-20
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Date published2007-01-01
Transformation of organic wastes into artificial oil in lithospheric reactors as a factor of overcoming ecological and mineral crisis
- Authors:
- A. E. Vorobyev
- A. D. Gladush
- T. V. Chekushina
As the population of our planet grows, the degree of negative impact on the biosphere steadily increases. This is due to the fact that, on the one hand, more and more minerals are extracted, more plant and animal products are harvested, more and more natural water is used for industrial, residential and agricultural purposes (Table 1), reclaimed land is brought into agricultural turnover, cities and settlements, production facilities are built, etc. On the other hand, the economic activity of mankind is steadily accompanied by an increase in the volume of various kinds of industrial and municipal wastes. For example, such components as garbage, waste and refuse are accumulated on a global scale in the amount of more than 20 10 tons per year.
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Date submitted2006-07-03
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Date accepted2006-09-09
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Date published2007-01-01
Algorithm of calculation of stress-strain state of the roof taking into account optimal selection of parameters of technological schemes in conditions of the Starobinskoye deposit
Mining of reservoir fields is associated with technogenic "perturbation" of a specific environment - a rock massif. This object is very complex in structure, different in mechanical properties and characterized by a wide variety of laws of change of its stress-strain state (SSS). Obviously, the study of parameters of mechanical processes in such media cannot be methodologically predetermined by the use of data only from full-scale experiments, or data only from laboratory studies or the results of analytical calculations.
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Date submitted2006-07-05
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Date accepted2006-09-13
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Date published2007-01-01
Investigation of ground water transformation in the zone of oil fields impact
- Authors:
- M. V. Kozhevnikova
Development of oil and gas fields is accompanied by emergency oil spills, which leads to unfavorable environmental situations manifested in groundwater pollution and, accordingly, the formation of lithochemical and hydrochemical pollution zones. In this regard, a rational network of groundwater monitoring in oilfield areas was developed for the purpose of timely detection of pollution, which allows minimizing the negative impact of oil and oil products on the hydrogeological environment.
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Date submitted2006-07-13
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Date accepted2006-09-10
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Date published2007-01-01
Monitoring of soil and vegetation cover for reclamation of the ecological disaster zones of JSC Severonickel
- Authors:
- D. S. Korelskiy
Severonickel Combine is one of the largest enterprises in the Kola Peninsula, processing Cu-Ni raw materials to produce non-ferrous metals and precious metal concentrates as end products. The industrial activities of the Severonickel Combine have a noticeable negative impact on the vast territory of the Murmansk Region, and the area characterized by a very high level of soil pollution occupies 1400 km 2 . During the expedition to the Murmansk Region in summer 2005, control samples were collected from the upper soil horizons in the areas exposed to the direct atmospheric impact of JSC Severonickel, at various distances from the Combine and in the background areas. This will make it possible to determine the overall degree of soil contamination at different distances from the enterprise, as well as the distribution of accumulated heavy metals in different horizons. Sample areas of vegetation in the form of phytomass of woody, shrub-grass and moss-lichen circles were sampled. The conducted studies will allow to give a comprehensive assessment of the negative impact on soil cover and different types of vegetation.
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Date submitted2006-07-21
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Date accepted2006-09-10
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Date published2007-01-01
Recultivation of sludge pits by planting with plants
- Authors:
- M. M. Malyshkin
One of the most serious environmental problems in the Russian oil industry is environmental pollution by drilling waste, which has a negative impact on the living conditions of people, animals and plants. Drilling sumps are pits on the territory of drilling sites filled with drilling waste. The problem of reclamation of drilling sumps can be solved using, along with reclamation of sumps, local tree crops and drilling wastes skillfully applied as growth-stimulating substances. This makes it possible to develop fundamentally new scientific and methodological bases for reclamation of forests on disturbed lands.
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Date submitted2006-07-06
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Date accepted2006-09-20
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Date published2007-01-01
Reduction of technogenic load on components of natural environment in the area of location of technogenic massif of iron ore mineral deposits of Mikhailovsky MMP
- Authors:
- I. K. Ponurova
Atmospheric air in mining and industrial areas is mainly polluted with dust, which has a negative impact on the surrounding landscapes and public health. The surfaces of tailings ponds, where dust is formed under the influence of atmospheric conditions, are one of the main sources of dust emissions containing heavy metals. The results of studies of iron ore processing wastes prove the necessity of development of rational means and methods of reducing dust emissions from dust-forming surfaces into the atmosphere. The article outlines the results of the analysis and shows the negative impact of mining and metallurgical enterprises on various components of the environment and the state of public health.
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Date submitted2006-07-26
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Date accepted2006-09-09
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Date published2007-01-01
Development and economic justification of the method of extraction of off-balance reserves of the Starobinskoe deposit
- Authors:
- Yu. G. Sirenko
- I. V. Pleskunov
- M. Yu. Brychkov
This article presents an analysis of existing lava pillar excavation methods using selective mining implemented at the fourth potash horizon. A new method is proposed that ensures the recovery of not only economic resources but also non-commercial reserves of the fourth potash horizon. Non-commercial reserves are concentrated in the ninth sylvinite layer, which contains about 14% of the total resources of this horizon. The economic effect of the proposed mining method is up to $13 million for one mining pillar.
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Date submitted2006-07-21
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Date accepted2006-09-16
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Date published2007-01-01
Development of effective technological schemes of excavation of thick hollow coal seams prone to self-ignition
- Authors:
- S. A. Sidorenko
- A. A. Sidorenko
The article analyzes the impact of endogenous fire hazard of the development of strata prone to spontaneous combustion, in particular, with the use of modern efficient equipment, on the technical and economic performance of the mine. The conclusion is made about the necessity of differentiated approach in the choice of technology for the development of mined seams. The effective technological scheme of development of strata prone to spontaneous combustion is proposed. The influence of the first layer development on the stress-strain state of the underlying layers is investigated and rational parameters of technological schemes are determined. The economic effect from the introduction of the developed technology is calculated, which is obtained by reducing the number of endogenous fires and minimizing the damage in case of their occurrence.
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Date submitted2006-07-26
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Date accepted2006-09-22
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Date published2007-01-01
Ore quality management due to computer organization of self-propelled delivery equipment on the example of the Dukat mine
- Authors:
- A. S. Usypko
The article presents a computer program for organizing the ore delivery process with averaging of the useful component in the ore stream. This program allows to create an ore stream with a stable content of useful component in accordance with the requirements of the concentrator, as well as to provide ore quality management by computer correction of the organization of the delivery equipment operation directly during the delivery process.
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Date submitted2006-07-05
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Date accepted2006-09-01
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Date published2007-01-01
Reduction of dust emission at quarries using phase transitions of moisture
- Authors:
- Yu. V. Shuvalov
- N. A. Gasparyan
One of the main sources of hazardous air pollution on the territories of mining and metallurgical and enrichment complexes and adjacent territories are dust-forming surfaces of dumps. As a result of wind erosion, fine fractions, which have a predominant impact on respiratory organs, are easily transported from the surface to long distances. The article proposes a method that reduces dust and dust transfer of fine materials, increases the biological productivity of dumps and their rapid reclamation.
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Date submitted2006-07-09
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Date accepted2006-09-27
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Date published2007-01-01
Resource-saving technologies of heat energy production on the basis of solid combustible carbon containing waste processing
- Authors:
- Yu. V. Shuvalov
- A. N. Nikulin
The growth in the use of solid waste in the global industry has occurred throughout the twentieth century with varying effects in different sectors and with the aim of more efficient utilization of solid energy sources. The main suppliers of solid combustible carbon-containing wastes are mining, chemical, metallurgical, fuel and energy industries. Creation of technologies for processing and enrichment of solid combustible wastes and their use for obtaining environmentally friendly high-calorific combustibles will save labor resources and obtain a positive environmental effect, as well as increase the efficiency of fuel and energy resources use.
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Date submitted2006-07-27
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Date accepted2006-09-13
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Date published2007-01-01
Reduction of dust load at technological processes of formation of dusty surfaces at quarries by foaming method
- Authors:
- Yu. V. Shuvalov
- Yu. D. Smirnov
The most promising and practically feasible is the method of applying a fertile layer based on sapropel on the surface. The project of reducing dustiness of mining waste dumps and increasing their bioproductivity is proposed. The economic efficiency of various methods of reclamation is analyzed.
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Date submitted2006-07-21
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Date accepted2006-09-12
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Date published2007-01-01
Synthesis of aluminum alloys alloyed with rare and transition metals
- Authors:
- U. A. Aimatov
Introduction of titanium carbide into aluminum alloys significantly increases their strength characteristics. Synthesis of aluminum alloys containing titanium carbide by reduction of TiCl4 -CCl4 mixture by Al-Mg alloy is investigated. Simultaneous introduction of titanium carbides and scandium intermetallics into aluminum alloys is considered.
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Date submitted2006-07-21
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Date accepted2006-09-20
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Date published2007-01-01
Technology of joint processing of nepheline and bauxite
- Authors:
- S. A. Vinogradov
Due to the deficit of alumina at present, the main task of operating alumina refineries is to increase productivity. The proposed technology has been developed at Achinsk Alumina Refinery, but in the future it can be applied at other enterprises. The essence of the technology is combined processing of nepheline and bauxite ores. In this article the results of laboratory research carried out at present are considered. A preliminary summary of the feasibility of the proposed technology is given.
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Date submitted2006-07-11
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Date accepted2006-09-02
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Date published2007-01-01
Wind-energy installations
- Authors:
- M. A. Glushchenko
Oil, coal and gas are currently the main energy resources in the world. However, their reserves are not unlimited and are rapidly decreasing. Under these conditions, the problem of energy saving becomes acute, which can be solved by using wind energy as a source of energy. Wind energy can be utilized by means of wind power plants. The article deals with the peculiarities of wind generators application. Brief descriptions of wind power plants developed by teachers and students of the G.V. Plekhanov Leningrad Mining Institute together with employees of the St. Petersburg Institute of Mechanical Engineering are given.
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Date submitted2006-07-23
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Date accepted2006-09-13
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Date published2007-01-01
Processing of jewelry industry wastes containing gold, silver, palladium
- Authors:
- A. S. Kukolevskiy
- I. B. Elkin
A universal method of processing jewelry industry waste containing gold, silver and palladium is proposed. The technology is based on dissection of these materials in hydrochloric acid solution in the presence of environmentally friendly oxidizing agent - peroxygen. The head operation provides concentration of gold and palladium in solution, and silver - in the insoluble residue. The techniques of selective selection of gold, silver and palladium have been developed, which can be used for the preparation of jewelry alloys.
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Date submitted2006-07-21
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Date accepted2006-09-25
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Date published2007-01-01
Distribution of impurities in aluminum cathode depending on technological factors
- Authors:
- D. V. Makushin
The studies carried out over the last decades show that one of the main causes of failure of electrolyzers is the behavior of sodium in the process of aluminum electrolysis and its introduction into the electrolyzer bed. The paper describes the behavior of sodium in the process of aluminum electrolysis with the use of a number of additives in the electrolyte, which have some influence on the electrolysis process and the state of the electrolysis bath.
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Date submitted2006-07-05
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Date accepted2006-09-29
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Date published2007-01-01
Selection and calculation of autogenous and semi-autogenous grinding mills
- Authors:
- N. V. Nikoleva
Traditional methods of selection and sizing calculations for autogenous and semi-autogenous grinding mills that can affect the measurement of power input, such as mill drum liner design and power feed preparation, and comments on some modern developments are reviewed.
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Date submitted2006-07-22
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Date accepted2006-09-07
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Date published2007-01-01
Mathematical modeling of control subsystem of aluminum electrolyzer with annealed anodes
- Authors:
- P. A. Petrov
Modeling of the control subsystem of an aluminum electrolyzer with annealed anodes is described. The task is set and control objectives are defined. Mathematical description of the electrolyzer as a control object is given. The model of the electrolyzer and control subsystem is built in MatLab package with the use of Simulink visual modeling tool.
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Date submitted2006-07-03
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Date accepted2006-09-07
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Date published2007-01-01
Thermodynamic description of extraction of rare earth metals by carboxylic acids from nitrate media
- Authors:
- V. S. Strashinova
Experimental data on the solvate extraction of cerium(III) and yttrium(III) by solutions of oleic and naphthenic acids in o-dimethylbenzene have been obtained. After mathematical analysis of the dependences of the distribution coefficient on pH and the composition of the organic and aqueous phases, the structure and composition of the solvate complexes, as well as the values of Gibbs free energies and equilibrium constants of the reaction were determined.
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Date submitted2006-07-11
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Date accepted2006-09-16
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Date published2007-01-01
Research of thermal processing of wastes on conveyor roasting machine
- Authors:
- A. Yu. Feoktistov
The article considers the main aspects of thermal neutralization of unutilized part of waste on the conveyor roasting machine of sintering type with one-time use of heat generated during the process for burning limestone to obtain low-grade construction lime.
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Date submitted2006-07-16
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Date accepted2006-09-27
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Date published2007-01-01
Kinetics of zinc leaching from slag of lead-copper production
- Authors:
- A. A. Chistyakov
Optimal conditions of the leaching process have been found. Dependences of the process rate on the main technological parameters - temperature, concentration of reagents, L: H phase ratio - have been determined. Kinetic characteristics of the leaching process were obtained: reaction rate constants at different temperatures, apparent activation energy of the process.
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Date submitted2006-07-16
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Date accepted2006-09-28
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Date published2007-01-01
Effectiveness of Gazprom's business diversification into the market of heat and energy resources of St. Petersburg
- Authors:
- A. A. Boltenkov
The purpose of this analysis is a determination prospect of «Gazprom» corporation’s strategy of active influence in the Saint-Petersburg’s market of heat-and-power engineering. In this analysis considerate general problems of energy-saving technology’s effective action in housing and communal services sphere. Also in this article fix the price of execution efficiency energysaving technology actions to heat supply system of Saint-Petersburg wards.
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Date submitted2006-07-02
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Date accepted2006-09-29
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Date published2007-01-01
Environmental Risk Management
- Authors:
- V. M. Vasiltsova
- D. S. Olenin
Today it is possible to assess the efficiency of economic activity of an industrial enterprise only by applying management tools that take into account environmental parameters. The presented concept of the integrated study of environmental risks covers the management procedure, starting from the pre-investment stage and ending with the shutdown or reorientation of production, on the one hand, and the multi-stage process of identification, assessment, management, monitoring and control of risks on the other hand.
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Date submitted2006-07-20
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Date accepted2006-09-28
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Date published2007-01-01
Prospects of electric power assets absorption by LLT Peterburgregregiongaz in the conditions of reforming the electric power industry of the Russian Federation
- Authors:
- N. P. Galayda
The article represents the investigation in the sphere of diversification of a regional gas company (with the example of «Peterburgregiongas» LLT). This investigation is very actual, because it helps to solve many problems of the organization and to make true one of the strategic initiatives of the company – to create the united energetic holding on the territory of Saint-Petersburg, Leningrad’s region and the Republic of Karelia. In the article on the analysis of processes in the branch of industry the rightness of the decision to diversify into electric energy is proved. The author gives all possible directions of making true the given conception and proves the priority of investment into the production of energy. Also there are found out and analyzed directions of diversification into production and the result of the preliminary finance and investment analysis of energy production enterprises of the region are given with the preliminary recommendation of choosing the direction of mergers and acquisitions with the aim to diversify the business.
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Date submitted2006-07-05
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Date accepted2006-09-24
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Date published2007-01-01
Economic and mathematical modeling of the strategy of sustainable development of natural-industrial complex
- Authors:
- N. G. Guseva
The article deals with the development of the economic-mathematical model of the sustainable development of the system reflecting all aspects of its functioning. The estimation of the sustainable development of system is offered to be carried out in integrated factor of the sustainable development, which calculates on the basis of factors of economic, social and ecological stability. Value of integrated factor gives representation about a condition of the natural-industrial complex.
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Date submitted2006-07-25
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Date accepted2006-09-06
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Date published2007-01-01
Passportization of the objects of improvement as a tool of effective management of the territory of the municipal district
- Authors:
- E. Yu. Ionova
In given article certification of objects of an accomplishment is considered by the example of Municipal formation № 7. During research the list of objects of an accomplishment and the order of gathering of the information on them have been determined, the technique of the account of objects of an accomplishment is developed and the program on formation of a database of passports of domestic territories is organized. As a result of work of the program the statistical information on the objects of an accomplishment located in territory of Municipal formation № 7 has been received. Objects of an accomplishment have been incorporated into groups, and the analysis of security by them of separate quarters of territory of district therefore it has been revealed is made, that quarter with conditional number 12 is provided with objects of an accomplishment worse others.
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Date submitted2006-07-20
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Date accepted2006-09-18
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Date published2007-01-01
Formation of Eastern Siberia competitiveness cluster on the basis of complex development of oil and gas resources of the region
- Authors:
- V. V. Kosovtsev
The work is devoted to the progressive way of industrial cluster management, and its results in regional economical stability achievement.
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Date submitted2006-07-23
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Date accepted2006-09-10
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Date published2007-01-01
Evaluation of the efficiency of investments in environmental protection measures (on the example of OAO Severstal)
- Authors:
- I. N. Kudryashov
Efficiency of investment in a system of nature management can be estimated by traditional methods. However, an enterprise have to know optimum volume of funds for investment into the environmental-protection actions. Which have specific characteristics, not taken into account in existing techniques. For elimination of the pointed drawbacks we suggest entering into practice of ecological calculations following yardsticks: waste capacity and damage capacity.
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Date submitted2006-07-27
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Date accepted2006-09-26
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Date published2007-01-01
Methodology of assessment of scale, depth and radicalism of innovations in production of mining enterprises
- Authors:
- E. A. Nikolaenkova
The evaluation method of innovation of production of mining industry is offered in the work, which is based on the certain indicators. There are: depth, scale and radicality. When introducing this indicators of diversification of production can be substantiately determined, for example, the amount of investments which are necessary for realization of reconstruction and modernization of industry. The problem of production connecting the basic factors of technical maintenance of enterprises and the volume of production and geometry interpretation are looked upon in the essay.
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Date submitted2006-07-04
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Date accepted2006-09-08
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Date published2007-01-01
Management of borrowed capital formation (on the example of JSC MNPO Polymetal)
- Authors:
- N. M. Ovchinnikova
In this work the elaborate description of means of investment acquiring for enlargement of enterprise production capability is given. Comparison of the ways of investment acquisition is offered. The choice of optimal mean among bonds, lease, credit and their combinations is grounded, economic effect is counted.
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Date submitted2006-07-29
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Date accepted2006-09-21
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Date published2007-01-01
Economic efficiency of investments at development of Shtokman gas condensate field
- Authors:
- E. A. Pastukh
The urgency of the given subject consists that development of the Arctic shelf has strategic value for Russia. It is necessary to break, first of all, the dangerous tendency of excess of levels of an oil recovery and gas above completion of their stocks. However realization of such projects in extremely difficult climatic conditions of Far North demands application of new constructional materials, use of the reliable and highly technological equipment, acceptance of nonconventional technical decisions, and also significant capital investments. The purpose of job was calculation of economic parameters of efficiency of investments, and as their economic analysis.
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Date submitted2006-07-11
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Date accepted2006-09-23
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Date published2007-01-01
Foreign experience in improvement of organizational and economic mechanism of reproduction of mineral raw material base of Russia
- Authors:
- N. V. Pashkevich
- L. A. Nikolaichuk
In the present work the economical mechanism of the renewal of the mineral resource base of Russia is shown, which includes the financing of the geological exploration, the mechanism of licensing and the tax system. Main problems of the mineral resource sector are discussed, the fundamental of which is the imperfect legislative base. Тhe basic directions of perfection of the economic mechanism of renewal of the mineral resource base are offered in view of foreign experience. The key criteria of how to resolve the presented problems the regulation of the development and use of the mineral resource base by State is considered to be.
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Date submitted2006-07-27
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Date accepted2006-09-20
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Date published2007-01-01
Economic evaluation of variants of complex development of oil resources of territories of Timan-Pechora oil and gas province
- Authors:
- E. I. Sapozhnikova
The given wok is devoted to the economical estimation of project variation of oil resources complex development on the territories of Timano-Pechora province. During the searching work the estimation of reserves & resources base structure of hydrocarbon raw materials on the territories of Timano-Pechora province are done; the possible projects of the oil extraction development in the study region are determined; the alternative projects of hydrocarbon raw material’s reserves development are analyzed and the end of economical estimation is the choice of the optimum project of oil extraction development in the study region – the oil company’s project. Thus, the complex development of the oil reserves & resources on the territories of Timano-Pechora province will give the serious impulse for the region development not only by oil & gas branch of industry but also by others branches that don’t connect with oil extraction. That will give the long duration development of the region economics and energy fields.
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Date submitted2006-07-14
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Date accepted2006-09-30
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Date published2007-01-01
Prospects for the development of Kuzbass coal mining enterprises: socio-economic problems
- Authors:
- E. A. Solovieva
- A. N. Martemyanova
The current state of the mining industry of Kuzbass is analyzed in the paper. The author considered the economic activity of mining enterprises of the Kemerovo region and the main problems of development of the mining industry.
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Date submitted2006-07-19
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Date accepted2006-09-02
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Date published2007-01-01
Modern state of mineral raw material base and prospects of development of geological exploration works in oil industry
- Authors:
- E. A. Solovieva
- N. A. Pavlova
The deterioration of mineral base status is a critical problem of oil industry today. It means quantitative and qualitative characteristics. We could see the stable lag an exploration works from growth rate of oil production last years. This situation in oil industry is far from optimal. So we need to take measures to help out oil industry of an oncoming crisis. The primary tasks to reproduce mineral base and develop exploration works facing to state is introduced in this article.
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Date submitted2006-07-22
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Date accepted2006-09-08
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Date published2007-01-01
Economic evaluation of competitiveness of coal mining company (on the example of OAO Gukovugol)
- Authors:
- E. A. Solovieva
- O. Yu. Filatova
Increasing of competitiveness of domestic enterprises and goods they produce is declared to be the essential problem of the Russian economy. In order to manage the competitiveness level of the object which is researched it is necessary to define quantitatively competitiveness figure. Nowadays there is no generally accepted procedure of competitiveness estimation concerning different kinds of objects. In the work estimation of the coal-mining company competitiveness is carried out by means of two methods. In respect of coal production competitiveness estimation method some clarity and additions are offered. They concern the specific features of using coal as fuel and raw material for generating electricity.
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Date submitted2006-07-21
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Date accepted2006-09-05
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Date published2007-01-01
Determination of optimum degree and economically acceptable limits of iron ore beneficiation and metallization of iron ore pellets
- Authors:
- V. A. Fedoseev
- A. A. Antipin
The research shows an effect of initial raw material’s dressing and metallization on the economics of metallized pellet’s production and utilization. We suggest using criterion, which reflects maximum efficiency per ton of a steel or a cast iron to determine an optimal degree and an economic tolerable limits of iron-ore-dressing and metallization of the iron-ore pellets. The research describes main conditions of optimal and tolerable iron-ore-dressing and metallization of the ironore pellets limit’s displacement.
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Date submitted2006-07-10
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Date accepted2006-09-29
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Date published2007-01-01
Experience of estimation of antifriction properties of metal surface by Stokes method
- Authors:
- T. G. Vakhreneva
- M. R. Urazaeva
- A. G. Syrkov
Opportunities to use the Stox equipment for relative estimation of antifriction properties of a solid surface are justified. Measuring of time and speed of uniform movement of similar steel balls with different nanocoatings showed that the least time (the highest speed) was registered for the sample which contains both kinds of cationic tensides in its surface layer. The data does not contradict results of industrial tests on conveyers with steel transport band and the best antifriction effect for lubricant composition.
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Date submitted2006-07-17
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Date accepted2006-09-11
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Date published2007-01-01
Step-by-step teaching of a foreign language to cadets of naval universities
- Authors:
- E. V. Zimina
- V. Ya. Kolotov
Professional activities of naval officers presuppose continuous process of FL mastering and language skills improvement. The continuous process of FL mastering is considered to be as an organized step-by-step process while conducting practical lessons in the Higher Naval Educational Establishment. The ideas of verbal and non-verbal communication in their combination are the key element in the suggested methods and ways of teaching.
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Date submitted2006-07-24
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Date accepted2006-09-26
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Date published2007-01-01
Numerical experiments on investigation of spatial-energetic parameters of low-pressure glow discharges
- Authors:
- A. A. Kudryavtsev
- A. V. Morin
- A. S. Mustafaev
The simple model which allows to make volt-ampere characteristic for the obstructed negative glows, considering non-local ionization in negative glow is developed. Scaling relationship which allow to predict key parameters obstructed glow discharges are received. The basic expressions for calculation of distribution of electrons density along a gap in plasma of a negative glow, distribution of potential and intensity of an electric field (including a point of the electric field reversal) are also presented. Comparison of the received results with data of full-scale modeling has shown the satisfactory consent. Carrying out of preliminary estimations by means of the presented model based on reliable physical principles, allows formulate better a problem for full-scale modeling.
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Date submitted2006-07-10
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Date accepted2006-09-09
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Date published2007-01-01
Role of language testing in foreign language higher education
- Authors:
- A. I. Mikheev
This paper deals with the role the foreign language testing procedure plays in the process of validation of the formation of linguistic and speech skills and habits. It has been shown that control of the level of training in the format of testing should be aimed at the education of the language achievement of students, the dynamics of their language and speech development, the formation of positive motivational statement to continue foreign language learning as well as encouraging desire to demonstrate his abilities, rather than the detection of language mistakes and difficulties, psychoemotional impedances cause and the availability of threshold level of a student’s foreign language competency.
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Date submitted2006-07-05
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Date accepted2006-09-24
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Date published2007-01-01
Invariant components of the system of productive foreign language teaching in a non-language university or the expediency of Opus Magnum search
- Authors:
- A. I. Mikheev
- V. Ya. Kolotov
A foreign language as a subject taught at a technical university aids the development of the mental processes of students, improves their verbal abilities, builds up habits of training, self-teaching, self discipline and control, accomplishes mental work culture and makes a considerable contribution to the training of future specialists. The key problem now facing a university teacher is the underresearched control of the learning process.
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Date submitted2006-07-25
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Date accepted2006-09-02
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Date published2007-01-01
The role of geology in the formation of scientific worldview
- Authors:
- B. Ya. Pukshanskiy
- G. B. Pospekhov
The problem to create the scientific view of the world is analyzed. Basing on the importance of science in life of each person, urgency of the given issue for modern society is revealed. The value of scientific approach, which basic principles are based on natural-science notions, is shown for apprehension of complex processes in modern science. On the example of geology it is shown, that currently established facts and laws forming modern conceptions of processes determining the origin and development of the Earth, its structure and composition including those of the Earth’s outer spheres (atmosphere, hydrosphere and biosphere), are truly an integral part of the scientific view of the world.
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Date submitted2006-07-18
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Date accepted2006-09-28
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Date published2007-01-01
Philosophy of marketing in the 21st century
- Authors:
- B. Ya. Pukshanskiy
- Zh. N. Khabipova
Marketing principles are a basis for successful business operation, but they are to stand the test of changing market environment. Transformation of this environment – splitting-up markets, their fashion following and product range extension together with constantly growing competition – leads to the fact that strategy and organization structures are getting outdated with a breakneck speed. Strategic priorities of the future companies will focus on acceleration of their response to changes, adaptation of their products and services to requirements of their customers, enhancement of information systems and striving to higher quality standar.
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Date submitted2006-07-16
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Date accepted2006-09-12
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Date published2007-01-01
Antonymic relations of semantic fields of virtues (Vertus) and vices (Vices) in the text of Montaigne's "Experiments"
- Authors:
- M. I. Slepneva
The article deals with the problems related to the delimitation of the phenomena of good and evil, the use of antonymic pairs in antonymic contexts. The paper presents the classification of the basic intellectual and moral virtues and vices laid down in Montaigne's "Essays". It is concluded that the semantic fields of virtues and vices make up two symmetrical systems in the "Essay", consisting of words that are antonyms of each other.
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Date submitted2006-07-24
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Date accepted2006-09-06
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Date published2007-01-01
Economic methods of sustainable development
- Authors:
- A. N. Sultani
«We, undoubtedly, are the last generation which is capable of stopping the destruction of the living world before it is too late», Jacques Chirac, President of the Republic of Frаnce. According to the report of the World Commission of the United Nations on the problems of environment and development of «steady development is the development adequate to needs of the present, not depriving the future generations of an opportunity to answer their own needs». Steady development is a policy and strategies that aim at maintaining the economic and social development. Thus, taking care of the environment, mankind does not lose natural resources necessary for its activity. The paper outlines the term «steady development» as well as economic methods of its achievement.