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Date submitted2011-10-24
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Date accepted2011-12-24
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Date published2012-04-01
Optimization of protective pillars parameters of mine shafts at the ore mines of OJSC «MMK «Norilsk Nickel»
The Article presents the results of long-term investigations of the problem concerning the protection of shafts with pillars of reduced sizes under conditions of the Talnakh and Oktiabrsky deposits. The principal potentiality of partial mining of shaft-bottom pillars VS-3 and GS has been proved at the Oktiabrsky ore mine. Certain recommendations are given on optimization of parameters of shaft-bottom protective pillars.
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Date submitted2011-10-24
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Date accepted2011-12-21
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Date published2012-04-01
Feasibility study of optimal parameters of pillars in designing rockburst-hazardous ore deposits development
- Authors:
- D. V. Sidorov
- T. V. Ponomarenko
The safe parameters of temporary interchamber pillars have been determined for the chamber-and-pillar method with ore discharge on trenches in designing of underground mining of the Koashva apatite-nepheline deposit. The results of calculation of economical efficiency of comparable parameters are presented. It was substantiated that the economical efficiency of application of the chamber-and-pillar method up to the depth of 800 m is related to the increase of natural yielding of interchamber pillars.
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Date submitted2011-10-20
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Date accepted2011-12-02
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Date published2012-04-01
Experience in expert systems application for estimation of stress- strain state of rock mass for selection of safe methods of ore deposits mining
- Authors:
- A. A. Kozyrev
- V. I. Panin
- I. E. Semenova
The method of successive geomechanical estimation of stress-strain state of rock mass at different scale levels was developed. This method allows to carry out the regional and local prediction of formation of stress concentrated zones, and also to develop and adopt technology, which provides the decrease of dynamic rock pressure manifestations and rock burst prevention at mineral deposits.
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Date submitted2011-10-25
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Date accepted2011-12-06
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Date published2012-04-01
Science-based procedural guidelines for coalmine methane drainage under conditions of higly gas-bearing seam intensive mining
Efficient Production of coal faces and safety of coal mining in relation to gas content while mining the highly gas-bearing coal seams shall be provided by using the highly efficient drain-age and clearing means of the coalmine methane emission sources. In order to provide efficient basis for decision making and validating of technical solutions while designing the coalmine drainage systems there have been developed the Technical Regulations for Methane Extraction and Recovery under conditions of active highly gas-bearing seam mining. These Technical Regulations were successfully tested in course of process design of the coalmine methane drain- age systems for Kirov and Kotinskaya Mines owned by SUEK-Kuzbass.
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Date submitted2011-10-04
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Date accepted2011-12-25
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Date published2012-04-01
Substantiation of techniques and methods of technogeneous deposits forming represented by rock refuse and waste rock dumps at open pit mining
- Authors:
- S. P. Reshetnyak
- A. V. Arkhipov
There are large waste rock dumps and uneconomical ore storages when open pit mining is used. Mining companies must create these dumps and storages observing special rules, if mineral deposits might be utilized in future. The technological properties of ores and rocks as well as the conditions of forming and storage should be taken into consideration. It is possible to reach high productive efficiency if the market will demand these commodities.
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Date submitted2011-10-07
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Date accepted2011-12-16
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Date published2012-04-01
Experience in ore reserves extraction in open-pit borders and bottom in transition from open-pit to underground mining
- Authors:
- M. S. Tankov
- I. S. Shelkovyi
The article presents the results of industrial-experimental tests of technology for extraction of open-pit border and bottom reserves of copper sulphide ores under different conditions at ore mines of OJSC «Uchalinsk MDK». Description is given to the technology of extraction of border reserves at the Sibay under- ground ore mine with the use of the open chamber with ore discharge through underground workings, as well as to the order of ore reserves extraction at the Uchalinsk underground ore mine.
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Date submitted2011-10-22
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Date accepted2011-12-03
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Date published2012-04-01
Scientific provision of disigning mineral deposit mining
- Authors:
- A. V. Kotenkov
- I. G. Kharisov
The modern approach of OJCS «Uralmekhanobr» to publication of design documentation on a new level of designing with the use of state-of-the-art information technologies, scientific potential in technology concepts is presented. A number of specific innovations of specialists being realized in practice in extraction of ore reserves at several ore mines is given.
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Date submitted2011-10-29
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Date accepted2011-12-26
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Date published2012-04-01
Problem solving of design and planning of open pit mining in Mineframe system
- Authors:
- O. V. Nagovitsyn
- S. V. Lukichev
- A. Yu. Alisov
The article presents the results of development for computer-aided design and planning of open-pit mines with the Mineframe software. There have been shown such peculiarities of computer-aided planning process as horizon reserves, development of annual cutbacks, searching of quarterly (monthly) volumes, monthly scheduling of equipment operation placed on benches, solution of the problems of ten-day periods, daily and shifts planning based on bench modeling.
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Date submitted2011-10-18
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Date accepted2011-12-02
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Date published2012-04-01
Peculiarities of prof. S.D.Korobov’s algorithm appliance in open-pit boundaries determination and mining operation regime justification
- Authors:
- A. L. Bilin
System of embedded contours applied in computer-aided mining-geometrical analysis is appropriate both for open-pit boundaries determination and for optimal advance direction with justification of mining operation regime.
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Date submitted2011-10-01
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Date accepted2011-12-23
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Date published2012-04-01
Mechanizатion of steep thick coal seams working
- Authors:
- L. F. Kozhukhov
- K. V. Struk
This article presents the data concerning application of techniques and technologies in mining steep thick coal seams both in domestic mines and abroad. The preference is given to application of mechanized complexes with partings output. The article gives the description of research tasks. The description of flat stand for modeling from equivalent materials and mining technologies with the use of moving drifts complex is also presented.
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Date submitted2011-10-13
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Date accepted2011-12-17
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Date published2012-04-01
Reflectionless observation technique of deforming edges of open-pit mines and spoil dumps
- Authors:
- P. V. Koltsov
Application of laser scanning for shooting procedure of open-pit mines’ edges and spoil dumps deformations is offered. The results of traditional observations and measurements obtained with the help of the offered technique are compared. Practical implementation in industrial objects is considered.
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Date submitted2011-10-02
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Date accepted2011-12-18
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Date published2012-04-01
Innovative technologies in disigning of mining enterprises
- Authors:
- G. Yu. Sedykh
At present, the principal instrument in designing and basic means providing the interaction of participants of the innovation process appear to be the innovations on the base of information technologies. Each working place of a designer is equipped with necessary technical and software facilities, allowing to create the common corporative information System of Automated Designing. The author suggests the algorithm for implementing into practice achievements of Russian engineering companies of modern applied information systems. An example is given of completion of items of sections of «Regulations for underground mining method of near–bank side and sub-quarry reserves of the Koashva deposit of OJSC "Apatit"» with the application of modern specialized computer geological-and-mining systems.
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Date submitted2011-10-30
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Date accepted2011-12-06
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Date published2012-04-01
Calendar planning in present-day geological and mining systems
- Authors:
- R. A. Bagateev
The article describes the principles of the calendar planning in the present-day geological-and-mining systems of the open-pit and underground mining. At present, a set of tasks was outlined being solved with using these systems at ore mining plants and design companies. A common approach to data preparation for the calculation of a calendar plan in the open pit and underground mining is described, including the determination of geological, technological and economical parameters to obtain the co-variant results of calculations. The advantages of introduction of geological-and-mining systems into the field of designing work are shown.
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Date submitted2011-10-22
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Date accepted2011-12-06
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Date published2012-04-01
Geomechanic assessment of technological decisions for designing mining operations in of burst hazrdous conditions
Regularities of forming of strained – deformed state in elements of designed variants of systems of development on various mining stages for Nikolaevskoe and Yuzhnoe polymetallic deposits are determined on the results of numerical modeling. Analysis of technogeneous stress field made it possible to discover some potential burst-hazardous sections of the rock massif and to substantiate effective rock pressure decreasing measures for preventing dynamic rock pressure occurrences.
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Date submitted2011-10-19
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Date accepted2011-12-13
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Date published2012-04-01
Designing of complex mining operations in coal mines
- Authors:
- O. V. Kovalev
- S. P. Mozer
- I. Yu. Tkhorikov
The basic laws of gas filtration at different stages of coal deposit mining are considered. The technique used for studying complex development of power resources of coal deposits, allowing with reference to concrete conditions to receive engineering dependences for a quantitative estimation of all key parametres of investigated processes is given. On the basis of the developed approach to complex development the algorithm of the practical solution of the problem is offered.
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Date submitted2011-10-30
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Date accepted2011-12-16
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Date published2012-04-01
Modern information technologies in designing and planning of mining operation
- Authors:
- A. Yu. Zvonar
- A. M. Gortsuev
The paper present the variant of planning of mining operations at the Central ore mine of OJSC «Apatit» with the use of the MineFrame system. Explanation to the approaches and a tool kit for solution of problems in planning of mining operations are given. The advantages of putting this system of designing into operation oover the existing approaches are shown.
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Date submitted2011-10-04
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Date accepted2011-12-09
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Date published2012-04-01
Optimization of drainage systems of developed and perspective polymetallic deposits of Leninogorsky area of Rudniy Altai
- Authors:
- V. B. Kolpakov
Results of works targeted at the selection and substantiation of optimum drainage systems of polymetallic deposits are presented. The basic stages of process of optimization of drainage systems are designated. Type assessment of polymetallic deposits of Rudniy Altai on hydrogeological conditions of development is given. Recommendations on working out basic schemes of drainage of polymetallic deposits are made.
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Date submitted2011-10-17
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Date accepted2011-12-29
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Date published2012-04-01
Mechanism of infuence on the powered roof support of rocks under different schemes of its failure above the mined-out space
- Authors:
- S. G. Baranov
- M. A. Rozenbaum
The paper considers three basic schemes of roof failure above the face bottom of long-wall during mining operations covering the whole diversity of mechanisms of support-roof interaction. The relationships are given for the determination of required rated resistance of the powered support with reference to the schemes of roof failure.
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Date submitted2011-10-14
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Date accepted2011-12-26
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Date published2012-04-01
Scientific support of the planning process of intensive coal seams mining technologies
- Authors:
- O. I. Kazanin
- A. A. Romashkevich
The main trends of underground coal mining technology development at Russian coal mines are shown on the basis of analyses of intensive coal panel extraction experience all over the world. The estimation of condition of the state rules and instructions for underground coal mining planning is made, it`s disparity with the modern mining practice is underlined. The necessity of the set of coal mining technologies pattern creation is shown with the purpose of increasing the quality of coal mining projects.
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Date submitted2011-10-20
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Date accepted2011-12-13
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Date published2012-04-01
Generalized schemes of interaction between the powered support and roof
- Authors:
- M. A. Rozenbaum
- S. G. Baranov
- M. A. Loginov
The paper considers three basic schemes of roof failure above the face bottom of long-wall during mining operations covering the whole diversity of mechanisms of support-roof interaction. The model of interaction between the powered support and heavy roof is given as well as the calculated scheme for the determination of necessary rated resistance of roof.
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Date submitted2011-10-25
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Date accepted2011-12-15
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Date published2012-04-01
New technologies for analysis and revision of risks in the planetary-cosmic genesis in designing оf mining operations
For the first time in practice of providing the safety in mining work consideration is given to the method of due account of the dynamics factors of rock masses of the cosmic genesis. The values of coefficient of rock mass dynamics in the 24-hours, monthly, annual, 11-year and 70- year cycles of geodynamic activity are given.
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Date submitted2011-10-05
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Date accepted2011-12-08
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Date published2012-04-01
Provision of geodynamic safety in mining the Barentsburg coal deposit
The minable seam «Verkhny» within the Barentsburg coal deposit is geodynamically hazardous, its geodynamic phenomena manifest itself in the form of proper rock bursts, shocks in the marginal zones and dynamic faults of ground. Due to rockburst-hazardous situation the application of the areal relief of rock mass with transition to technological variants of mining with leaving the extended rib pillars at the boundary with the mined-out space, with their cutting by drivage of additional working is applied. Consideration is given to the recommended variants of pillar leaving with the data of their assignment and applicability to geological-and-mining conditions of mine field sections. Description is given to the calculation of pillar sizes and parameters used for their calculations. Some examples are given of pillar leaving at different sections of mine field with geometrical parameters as well as the information is given on the seam extraction with prospecting routes (paths) with leaving the support rib and barrier pillars. The leaving of safety support and barrier pillars with substantiation of their sizes is recommended as the method for providing the safe condition of mining the «Verkhny» coal seam
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Date submitted2011-10-12
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Date accepted2011-12-25
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Date published2012-04-01
Problems and ways of exploration of the raw material resources base of the Subarctic branch of MMK «Norisk nickel»
- Authors:
- E. I. Muravev
- V. N. Karelin
- A. N. Shabarov
Consideration is given to the geological, mining and operating conditions of the Norilsk industrial district. The analysis is made of the present-day state of mining production of the subarctic branch of MMK «Norilsk Nickel». The principal trends in the safe and efficient exploration of the raw material resources base have been stated within the Norilsk industrial district .
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Date submitted2011-10-12
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Date accepted2011-12-10
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Date published2012-04-01
To the question of maintenance of permanent workings ventilation-waste floor in techtonic stressed zones «Big Gorst» of «Taimyr» mine
- Authors:
- V. A. Zvezkin
- V. N. Karelin
- T. S. Mushtekenov
Factors complicating drifting processes and barring in situ, disintegrated by tectonic burst- ing are considered. The analysis of stress-strain state formation of rock massif in the vicinity of tectonic disturbance is presented and practical recommendations concerning drifting and barring are given.
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Date submitted2011-10-22
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Date accepted2011-12-03
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Date published2012-04-01
Some results of innovations in mining at the OJSC «KNAUF GIPS Novomoskovsk»
- Authors:
- Yu. V. Kovtun
One of the reasons for restraint of the innovative development at mining plants is lagging behind mining machinery-building. OJSC «Knauf Gips Novomoskovsk» plant, where the transition to modern driving equipment and revision of parameters of blasting operations have been performed is an example of successful implementation of innovative approach.
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Date submitted2011-10-16
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Date accepted2011-12-15
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Date published2012-04-01
Experience in application of geophysical methods for stress-strain state of rock mass control with the goal of altering design solutions in liquidation the flooding of the emergency section of mine № 1-5 of the Barentsburg coal deposit
The paper presents the results of observations of stress-strain state at the Barentsburg coal deposit by means of the «Angel» equipment with the the purpose of detecting sections prone to manifestation of dynamic forms of rock pressure. The investigated sections of mine field were flooded for a long time, therefore after drainage the original cycles of geophysical measurements have been conducted at all development workings and at production face by applying recording techniques for natural electromagnetic emission, recording of background component of natural electromagnetic field of the Earth, seismoacoustic emission (shock) and seismoacoustic emission (natural), pulsed by points (profiles) along the workings. Parallel with geophysical observations measurements with KDM-1 device were made and visual ob- servations were carried out.
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Date submitted2011-10-11
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Date accepted2011-12-06
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Date published2012-04-01
Substantiation of the necessity of solving the problem of technogeneous deformation phenomena prevention in pit quarries and coal sections
- Authors:
- S. P. Bryakov
The article contains the examples of landslide phenomena in Russian Federation caused by joint surface and underground mining and also underground slope undermining. Deformation processes occurred as a consequence of deficient and improper study of rock mass. Some examples of investigation of strength and deformation characteristics of the near-pit edge mass at one oreand one coal deposit with application of the combined surface and underground mining methods are given.
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Date submitted2011-10-09
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Date accepted2011-12-13
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Date published2012-04-01
Safety problems of mining operations in high-stress hard rock massif
- Authors:
- A. A. Kozyrev
- V. I. Panin
- Yu. V. Fedotova
Intensive development of large-scale deposits in high-stressed rock masses results in sharp activation of mining-induced processes in the earth depths and the surface thus initiates increasing of seismic activity in the mining area and hazard of rockbursts and mining-induced earthquakes. As reliable spatial-temporal prediction of dynamic events in the mines is problematic in the current state of methodology and geomechanical experiment technique, therefore, it is required to assess risks of these events which scale determines corresponding preventive measures.
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Date submitted2011-10-09
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Date accepted2011-12-19
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Date published2012-04-01
Monitoring and prognosis of anthropogenic and geomechanical processes in undermined rock mass in the process of mine development
Principles of complex monitoring of anthropogenic geomechanical processes of the operating mining enterprise on the basis of geo-information technology are developed. They allow to form and maintain digital geospatial model of mine development timely and effectively. In a mode of real time it allows to carry out geophysical and geomechanical monitoring of an undermine rocks and to plan and operate technological processes timely, to raise mining operation safety.
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Date submitted2011-10-18
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Date accepted2011-12-24
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Date published2012-04-01
Studies of the stress-strain state of intrusion in the process of joint mining of ore deposits of the Oktyabrskiy and Talnakhskiy deposits
- Authors:
- A. N. Shabarov
- V. A. Zvezdkin
- A. G. Anokhin
Features of the stress field in the ore-bearing intrusions of the October and Talnakhskiy deposits, with taking into account the depth of the ore deposits and the formation of tectonic disturbances are considered. Analysis of tension underworked and overworked intrusion. The dependencies of stress field formation in the intrusion in the joint working out of intrusion ore deposits are obtained. Recommendations on joint working out of intrusion ore deposits Oktyabrskiy and Talnakhskiy deposits are given.
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Date submitted2011-10-03
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Date accepted2011-12-01
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Date published2012-04-01
Prognosis and effective prevention of rock bursts in underground coal mines in Slovakia
- Authors:
- Zh. V. Zhurov
- Zh. Khizh
The mining activities in the territory of Slovakia have a long history. The mining tech-nique got a fast development in the last centuries. This paper deals not only mining history but also investigation of stability of the rock massif by underground brown coal mining from safety raise and protection of miners’ point of view and sustainable development of mining industry in the Slovak Republic.
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Date submitted2011-10-19
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Date accepted2011-12-24
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Date published2012-04-01
Blasting charge diameter influence on the blasting efficiency
- Authors:
- Yu. I. Vinogradov
- V. A. Artemov
Research carried out proves that blast seismic effect i.e. displacement velocity in a seismic wave and efficiency are the function of specific charge with rock mass contact surface. Dependence of blasting fragmentation coefficient from diameters and charge density variation is given.
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Date submitted2011-10-27
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Date accepted2011-12-27
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Date published2012-04-01
Interaction between seismic activity in Kuzbass and open-pit operations
- Authors:
- S. V. Tsirel
- A. A. Pavlovich
The analysis of graphs shows seismic events repeatability and seismic events distribution during the day, by days of the week and by months was made. It is shown, that seismic activity in Kuzbass region has a mixed natural and manmade character and figures of repeatability have interim character, the majority of seismic events occur in the time of blasting operations in open pit mining, but the distribution by month of the year corresponds to planetary pattern – the larg est number of events takes place in March, August and December. It was suggested that the spring increase in seismic activity lead to reduced stability of mine slopes during the snowmelt of landslides formation.
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Date submitted2011-10-15
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Date accepted2011-12-01
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Date published2012-04-01
Influence of drilling facilities quality on the level of ocupational diseases
The pressing challenge of occupational diseases among miners is considered. The data for different kinds of occupational diseases, their distribution in years and connection of the incidence with the quality of equipment used is cited.
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Date submitted2011-10-26
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Date accepted2011-12-12
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Date published2012-04-01
The method of potash salt interchamber pillars stability control
- Authors:
- A. A. Baryakh
- V. A. Asanov
- I. A. Sanfirov
The research of potash salt rock deforming and damaging features has made it possible to develop the method of load bearing element state examination by chamber-and-pillar system. This method consists in instrumental control of pillars by geophysical and in situ methods with following prognosis of their residual life by mathematical simulation methods.
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Date submitted2011-10-22
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Date accepted2011-12-29
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Date published2012-04-01
Using of spatial models оf objects for geodetic monitoring of deformation processes
- Authors:
- M. G. Mustafin
- A. V. Kovyazin
The paper presents comparison of classical methods of instrumental observations of slope stability with survey technology based on the use of laser scanning systems, as an example of the organization of monitoring the stability of the phosphogypsum stack Ltd «Balakovo mineral fertilizers».
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Date submitted2011-10-05
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Date accepted2011-12-17
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Date published2012-04-01
Controls allowed earth deformation construction vertical openings in built-up area
- Authors:
- M. G. Mustafin
- A. S. Naumov
Article is devoted to predicting the effects of underground facilities on the environment. The system of observations of the deformation of the earth's surface in the construction of the vertical development. Performed a preliminary analysis of the possible development of the deformation process. The comparison of calculated and actual data. Recommendations on the organization of the deformation monitoring.
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Date submitted2011-10-15
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Date accepted2011-12-29
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Date published2012-04-01
Valuation of sustainable of pit wall
- Authors:
- M. G. Mustafin
- A. P. Sannikova
- P. I. Yushmanov
This article respond the question about using the digital photographic data in open-cast mine for specification of structural easing factor and his application for modeling of stsbility in open-cast mines with «Phase2» and «NEDRA».
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Date submitted2011-10-01
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Date accepted2011-12-02
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Date published2012-04-01
Microstructual mechanical behaviour of soils
- Authors:
- M. A. Karasev
Contact stiffness between two particles is considered. Analysis of interaction between two particles based on the smooth and rough contact is done. Dependence of contact stiffness on normal forces and particles surface roughness is presented.
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Date submitted2011-10-21
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Date accepted2011-12-12
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Date published2012-04-01
Factors of alumina dust formation in primary aluminum production
All types of raw materials used in aluminum production, are finely dispersed structures, which cause dusting during manufacturing operations, which leads to the formation of substandard raw material deposits. Their turnover in primary production contributes to the deterioration of techno-economic parameters of the process. Alumina dust samples werea collected with a mark of 16,0 meters on aluminum smelters in Russia, in the process of various technologies application. While in the upper layers alumina absorbss moisture, fluorides, and carbon. Penetration of fluoride in the amount of alumina particles depends of the crystallographic characteristics of the grains. At high stratification of the particles, fluorides are evenly distributed on the surface, and in the bulk of the particles. Mostly solid fluorides penetrate into cracks and deformation of the grains of alumina and hydrogen fluoride is adsorbed on the surface with the formation of aluminum fluoride. Alumina dust produced by the company operating for a long time with the cryolite ratio 2,2-2,35, contains a large amount of silicon. Silicon compound coat grain acicular alumina film.
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Date submitted2011-10-11
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Date accepted2011-12-25
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Date published2012-04-01
Laboratory equipment for research in mineral processing
Main tasks of ore raw material study, requiring special laboratory equipment, are considered Conditions are described, that are required for determination of sample mass and material size, as well as the operations, that include sample preparation, determination of grindability, crushing and grinding products concentration, through implementation of which, raw material characteristics study and processing technology development are accomplished Sample preparation procedures (for mineralogical, phase and substantial analyses), laboratory ore-dressing flow sheets, as well as the recommended optimal set of laboratory equipment for their implementation, are described.
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Date submitted2011-10-22
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Date accepted2011-12-29
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Date published2012-04-01
Innovate technologies in waste of extraction and nonmetallic raw materials processing
The paper deals with the problems of crushed stone screening wastes recycling and commercial utilization of the products obtained. Application of pulsed vibration technique made it possible to minimize generation of screening wastes in crushed stone production and provided means for obtaining high-quality fillers for production of compact fine-grained concretes and cell concrete.
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Date submitted2011-10-18
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Date accepted2011-12-09
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Date published2012-04-01
Particularities of gold ore deposit development in complex environment
Review of the design experience in the open-cut development of a very large gold ore steeply pitching deposit are given. Complicating factors are previous underground workings and pressure subpermafrost waters. Opening of depth horizons by ore and rock incline conveyor shafts. Crushing of ore and rock in an open-pit mine before they are delivered to conveyors by semi-mobile crushers. Water depression by ring-type workings with transportation of the collected water by conveyor shafts.
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Date submitted2011-10-21
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Date accepted2011-12-18
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Date published2012-04-01
New ore and coal extracting and processing technologies at arcelormittal temirtau JSC mining plants
- Authors:
- F. Pannir
- A. M. Gazaliev
Annotation describes recovery and iron ore beneficiation technologies at Lisakovsk minefield, including facilities and concentrate dephosphorisation process. Paper represents development and coal mining technological advancement prospects at Karaganda coal basin (ArcelorMittal Temirtau JSC), in cooperation with DMT Ltd (Germany).
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Date submitted2011-10-23
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Date accepted2011-12-02
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Date published2012-04-01
Advanced concentration technology of phosfatic- bearing ore of Oleniy ruchey deposit (Kola peninsula)
Based on carried out laboratory investigations and pilot testing there has been developed the technology of phosphate-bearing ores concentration of Oleniy Ruchey deposit with maximum recovery of two concentrates – apatite and nepheline. Environmental safety requirements were observed.
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Date submitted2011-10-19
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Date accepted2011-12-16
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Date published2012-04-01
The increase of ecological safety and economic efficiency of beryllium fluoride reduction process with magnesium by using granulated bath
- Authors:
- G. S. Pestova
Beryllium is the first of metals in Mendeleev periodic system, derived by reduction at the stage of low temperatures. The granules dimensioned interval is optimized in analytical research of beryllium fluoride reduction regularities. The maximum dimension for beryllium fluoride is 24 mm, minimum is not less than 1 mm. The optimal value of parameter is in mean value depreciation area (10-18 mm). The maximum dimension for magnesium is 24 mm and corresponds to 1 mol.
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Date submitted2011-10-27
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Date accepted2011-12-14
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Date published2012-04-01
The design decision of technology of polymetallic ores enrichment in copper concentrating factory of MDK «Khandiza»
- Authors:
- P. I. Kalandrov
- B. I. Iskandarov
- B. S. Abriev
The article discusses the design decisions and technology of enrichment used in copper-processing plant MDK «Khandiza». It shows the collective-selective enrichment scheme, the performance is supported by a smooth speed control – under bunker feeder on the basis of conveyor scales readings, grinding which is achieved in three stages as well as calculation and selection of equipment and reagents for basic services is considered.