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A. V. Kornev
A. V. Kornev
Saint Petersburg State Mining University
Saint Petersburg State Mining University
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Without section
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Briquetting of iron-ore materials for iron and steel industry

Briquetting in ferrous metallurgy is the earliest way clotting. In the beginning of XX century briquetting has been forced out by agglomeration  basically  for  the  reason  considerably more productivity of process of agglomeration. The alternative agglomeration became pelletizing which share from the XX-th century middle steadily grows that is quite explainable essential increase in manufacture fine particle concentrates. However briquetting has a number of advan- tages. And for separate kinds of iron ores briquetting can appear preferable process. Such ores     are the rich iron ores containing 60 and more % iron in ore. The technology of briquetting includes, preliminary screening for removing of large classes; dispensing and preliminary mixing 85-90 % martite, iron-micaceousmartite ores and 10-15 % hydrohematite ores; mixing with connective substances; pressing; drying. The received briquettes have density 3200-3500 kg/m3, durability on compression about 4,5  MPа.

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V. B. Kuskov, A. V. Kornev, D. V. Sukhomlinov (2013) Briquetting of iron-ore materials for iron and steel industry. Journal of Mining Institute. Vol 202. p. 107.
Without section
  • Date submitted
    2016-11-07
  • Date published
    2013-03-01

Features of rich iron ores preparation for metallurgical processing

Iron ores is one of the main types of minerals used used by mankind. Practically all domestic deposits contain 20-40 % iron ore and so are the deep concentration. Deposits of rich iron ores, containing more than 55-60 % in our country is not enough. One of these fields is Yakovlevskoye iron ore deposit. The use of dry magnetic separation of ore for the preliminary concentration did not give positive results. The study of grain-size composition  of  the  ore  showed a significant disparity in the distribution of iron by classes size that afford it possible to carry out preliminary concentration of ore screening. For ore processing flowsheet is proposed which includes crushing to a particle size of 10 mm, screening fraction of 5 mm. Larger fraction  of 5 mm is used, for example, in the blast-furnace process, and the fraction smaller than 5 mm is direct to the briquetting. As binding substance for briquetting used solution of carboxymethyl cellulose, or a combination of binder based on carboxymethyl cellulose or highly active   clay.

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V. B. Kuskov, Ya. V. Kuskova, A. V. Kornev (2013) Features of rich iron ores preparation for metallurgical processing. Journal of Mining Institute. Vol 202. p. 126.
Without section
  • Date submitted
    2016-11-08
  • Date published
    2013-03-01

Technical and mineralogical evaluation of low quality bauxite washability (an example of North Onega deposit)

The results of the technical and mineralogical studies of washability of low quality bauxites of North Onega deposit are presented. The experiments of determination of the grindability of raw materials including without ball grinding and assessment washability bauxite  by magnetic separation and flotation were conducted. These ores are very complex object for enrichment, as characterized by extremely thin impregnated aluminum-containing minerals, as well as  the similarity of their properties. Further work of to conduct experiments using chemical enrichment (as soon as the chemical enrichment, and in combination with the physical methods of enrichment) is planned.

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E. A. Alekseeva, V. N. Brichkin, N. V. Nikolaeva (2013) Technical and mineralogical evaluation of low quality bauxite washability (an example of North Onega deposit). Journal of Mining Institute. Vol 202. p. 231.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-18
  • Date published
    2012-02-01

Research of diamond ores disintegration process regularity

In article researches of kinetic and power characteristics of process of self-crushing which  are executed on diamond-bearing ores of a deposit of a tube «Komsomolskaya» are resulted. Autogenous grinding process was investigated from a position of an exit of a commodity size –30 + 0,2 mm.

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A. A. Bobrakova, N. V. Nikolaeva (2012) Research of diamond ores disintegration process regularity. Journal of Mining Institute. Vol 196. p. 110.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-18
  • Date published
    2012-02-01

Effect of potassium on the solubility of aluminum hydroxide in alkaline aluminate solutions аnd their decomposition

Materials of calculation of solubility of aluminum hydroxide in the system Na2O – K2O – Al2O3 – H2O, by data of the solubility in the private sections of this system for a wide range of compositions aluminate solutions by the content of alkaline components are  presented. It  is shown that the solubility of aluminum hydroxide in the range of concentration of alkaline components from 1,29 mol/l to 1,94 mol/l is a linear function of the mol fraction of one of them. The results of experimental researches on decomposition of aluminate solutions are given. Significant increase of the degree of decomposition of aluminate solutions in per cents of the theoretical values with growth of mol fraction of K2O in  a mixture of alkaline components has been established.

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V. N. Brichkin, E. A. Alekseeva, N. V. Nikolaeva, E. E. Gordyushenkov (2012) Effect of potassium on the solubility of aluminum hydroxide in alkaline aluminate solutions аnd their decomposition. Journal of Mining Institute. Vol 196. p. 113.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Working out of new designs of concentration tables for increase of efficiency of enrichment useful iskopae

It was made new modification of device for allows increasing recovery, to increase productivity and to lower size of concentrated particles. The device has a deck executed as a disk, which divides into sectors; each sector has circular rifles. The table is equipped with the high-frequency step-by-step engine ensuring continuous rotation of a table and submission counter impulses for shear of particles in a direction to rotation of a table.

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Ya. V. Kuskova, V. B. Kuskova (2012) Working out of new designs of concentration tables for increase of efficiency of enrichment useful iskopae. Journal of Mining Institute. Vol 196. p. 132.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Techniques and technology of improvement оf ways of development of concentrating factories

In this article analyzes the main ways of development of technics and technology in the iron-ore concentration plants. Examples of Kovdor, Lebedinsky and Mikhailovsky Goks the methods of reconstruction and modernization  of factories, as well as the activities undertaken to increase the quality of iron concentrate. As a result of the analysis made general recommendations for improving the quality of iron concentrate, cost reduction and increase of volumes of manufacture.

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A. I. Lyalikova, E. E. Andreev (2012) Techniques and technology of improvement оf ways of development of concentrating factories. Journal of Mining Institute. Vol 196. p. 136.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

The possibility of separation of bauxite material by methods mechanical dispersion

In given article researches patterns of distribution and separation of bauxite substances by mechanical dispersion, which are executed on subprime Timan  and  the North Onega bauxite ores. The process of mechanical dispersion was considered the example of process of self-crushing.

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M. S. Nikiforova, N. V. Nikolaeva (2012) The possibility of separation of bauxite material by methods mechanical dispersion. Journal of Mining Institute. Vol 196. p. 139.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Adsorption and its influence on the mechanism of alumina liquor precipitation

The materials of mass transfer kinetic analysis of complicated by the establishment of adsorption equilibrium, during alumina liquor precipitation of alumina production. It is shown that the presence of strongly adsorbing impurities is one of the determinants of the intensity of the aluminum hydroxide chemical precipitation. The results of experimental studies on the alumina liquor precipitation with the participation of adsorption active components.

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V. V. Rad'ko, V. N. Brichkin, N. V. Nikolaeva, E. E. Gordyushenkov (2012) Adsorption and its influence on the mechanism of alumina liquor precipitation. Journal of Mining Institute. Vol 196. p. 142.
Metallurgy, physical and chemical regularities of technological processes
  • Date submitted
    2016-11-21
  • Date published
    2012-02-01

Simulation of mineral processing plant data

This article was crate to look through the main  ideas  of  mineral processing simulation. Here you can find some information about it’s problems, solutions for these problems, Zagustin law of grinding kinetic, breakage and selection functions and it’s research methods.

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N. O. Tikhonov, E. E. Andreev (2012) Simulation of mineral processing plant data. Journal of Mining Institute. Vol 196. p. 150.
Current problems in geology and exploration of mineral deposits
  • Date submitted
    2016-11-25
  • Date published
    2011-06-01

Preparation of iron-ore materials for iron and steel industry

Briquetting in ferrous metallurgy is the earliest way clotting. In the beginning of XX century briquetting has been forced out by agglomeration basically for the reason considerably more productivity of process of agglomeration. As alternative to agglomeration pelletizing  became.  It started to be popular in the XX-th century, that is quite explainable by essential increase of manu- facture fine particle concentrates. However briquetting has a number of advantages. For  some  kinds of iron ores briquetting can be preferable process. Such ores are rich iron ores with iron content 60 % and more. The technology of briquetting includes crushing, preliminary screening for removing of large particle size classes; dispensing and mixing martite ore, and hydrohematite ores; mixing with binder substances; pressing; screening for removing of small size briquettes; drying. The received briquettes have density 3200-3600 kg/m3, durability on uniaxial compression more then 4,5 MPа.

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V. L. Trushko, R. E. Dashko, V. B. Kuskov, A. V. Kornev, A. S. Klyamko (2011) Preparation of iron-ore materials for iron and steel industry. Journal of Mining Institute. Vol 194. p. 120.