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I. N. Beloglazov
I. N. Beloglazov
Saint Petersburg State Mining Institute (Technical University)
Saint Petersburg State Mining Institute (Technical University)
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Articles

Metallurgy and concentration
  • Date submitted
    2016-10-12
  • Date published
    2015-05-01

Development of an environmentally safe gold extraction method from refractory ores using sodium thiosulfate as an extractant

The article presents the results of a mathematical model development for the process of gold leaching from gold-containing ores and concentrates. A mathematical model has been developed by analyzing the chemistry of reactions and mass transfer processes. On the base of a kinetic extraction model and a hydrodynamic complete mixing model a mathematical model of thiosulfate leaching process in various types batch reactors, complete mixing flow process vessels and complete mixing reactor columns with different numbers of vessels in a column has been developed. The effect of the number of reactors in a column has been investigated and optimal segmentation conditions have been found. Based on the investigation of the process using the mathematical model a control system structure has been designed to provide maximum conversion at the exit area of a reactor column.

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Yu. V. Sharikov, Ilkka Turunen (2015) Development of an environmentally safe gold extraction method from refractory ores using sodium thiosulfate as an extractant. Journal of Mining Institute. Vol 215. p. 83.
Environmental protection technologies, research, processing and utilization of technogenic structures, recycling of ...
  • Date submitted
    2016-11-02
  • Date published
    2013-04-01

Methods fine purification of circulating water for industry

Main features of purification of recycled water of industrial enterprises have been considered. It has been shown that using membrane methods of purification allows to remove of dissolved metals salts from recycled water and to bring their concentration to standardized level. Using this method doesn’t require such large energy consumption as evaporation method. The analyze of membrane purification methods have been fulfilled. Mathematical model of  this process has been developed. The solution algorithm has been developed and some results of simulation of membrane purification have been presented.

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Yu. V. Sharikov, R. D. Pavlov (2013) Methods fine purification of circulating water for industry. Journal of Mining Institute. Vol 203. p. 120.
Without section
  • Date submitted
    2016-11-08
  • Date published
    2013-03-01

Modeling of the oxidation of sulfide ores with the aid of a cascade of continuous stirred-tank reactors

The method of recovery the refractory sulfide ores with the aid of pressure oxidation was examined. The basic processes of oxidation was discovered and the mathematical description of  the process of sulfide oxidation in a heterogeneous system, the  liquid – solid, was suggested. The ReactOp allowed to solve inverse   problem – determination of kinetic parameters (E = 112 kJ/mol, ln(K) = 20 m/s) from the experimental data. On the basis of defined parameters is made and investigated the cascade of continuous stirred-tank reactors.

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Yu. V. Sharikov, N. A. Karastelev (2013) Modeling of the oxidation of sulfide ores with the aid of a cascade of continuous stirred-tank reactors. Journal of Mining Institute. Vol 202. p. 242.
Metallurgy and concentration
  • Date submitted
    2016-11-13
  • Date published
    2016-05-01

Control systems of sintering processes in rotary tubular kilns with using of thermovisors scanning

The article considers the role of the lining in the tubular rotary kilns used for heat treatment processes of  raw material in the metallurgical, chemical and other fields of industries. The method of selecting a new design thermal insulation elements, ensuring reduction of heat loss to the environment and  more  accurately to provide  the required thermal  processing mode through simulation can be used with  ANSYS FLUENT software package. A system of monitoring the state of the lining with a thermal imager and control system that provides consistency lining without stopping the  operating kiln  has  been  developed.

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Yu. V. Sharikov, T. O. Koiranen (2016) Control systems of sintering processes in rotary tubular kilns with using of thermovisors scanning. Journal of Mining Institute. Vol 221. p. 681. DOI: 10.18454/pmi.2016.5.681
Physical chemistry, benefication and metallurgy
  • Date submitted
    2016-12-09
  • Date published
    2011-01-01

Chemical transformation kinetics at sintering of the shludge in tubular rotary kilns in alumina production

This article is devoted to the  study of the kinetics and the development  of kinetic models of chemical reactions of minerals that occur during roasting and sintering of alumina in the tubular rotary kiln. To study the kinetics was used DSC firm NETSCH. Determination of kinetic constants and thermal effects of the individual stages were performed by solving the inverse problem in the environment of software system ReastOp. The experimental responses were used in sample mass change with time and heat speed (heat  absorption).

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Yu. V. Sharikov, O. V. Titov (2011) Chemical transformation kinetics at sintering of the shludge in tubular rotary kilns in alumina production. Journal of Mining Institute. Vol 189. p. 324.
Applied and fundamental research in physics and mathematics
  • Date submitted
    2016-12-15
  • Date published
    2010-03-01

Organization of the closed system of circulating water at high content of phosphates in used water

the method of circulating industrial waters treatment from metallurgical works with high content of phosphates is considered. It includes treatment via reagent precipitation with alkalization and flocculant addition, filtration of residue on a press-filter, further purification of water on a filter with granular loading, purification  from residual calcium on an ion-exchange filter, neutralization of softened water and its final desalting in the unit of reverse osmosis.

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R. D. Pavlov, Yu. V. Sharikov (2010) Organization of the closed system of circulating water at high content of phosphates in used water. Journal of Mining Institute. Vol 187. p. 104.
Applied and fundamental research in physics and mathematics
  • Date submitted
    2016-12-15
  • Date published
    2010-03-01

Mathematical simulation of emergency situations arising at storage and treatment of potential hazard chemical substances

Possible reasons arising destroying of storage and apparatuses for potential hazard materials have been analyzed. Thermal explosion has been indicated as one of most impotent reasons of destroying chemical reactors and storages. Basic equations for describing of this phenomena have been evaluated for different type geometry and conditions of heat exchange on outside surface. Numerical procedures have been proposed and tested for solving and analyzing of evaluated equations with using special program package ThermEx. Processes of evaluation arising clouds of hazard substances have been considered. Basic mathematical equations have been proposed for analyze of considered processes. The procedure for solving of considered problems has been proposed and tested on base of special program package ReactOp.

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Yu. V. Sharikov, I. N. Beloglazov (2010) Mathematical simulation of emergency situations arising at storage and treatment of potential hazard chemical substances. Journal of Mining Institute. Vol 187. p. 151.