THE MAIN SCIENTIFIC ACTIVITY TRENDS OF NORTH CAUCASIAN INSTITUTE OF MINING AND METALLURGY (STATE TECHNOLOGICAL UNIVERSITY) IN THE STUDY AND SOLUTION OF THE PROBLEM OF COMPLEX AND ENVIRONMENTALLY SAFE PROCESSING OF NATURAL AND TECHNOGENIC MINERAL RAW MATERIALS

The result of many years research of the university scientific community in the field of topical issues of complex processing of natural and man-made mineral raw materials was the creation of a scientific school “Dynamics of working bodies of machines and equipment for fine grinding of rocks” under the leadership of Professor Dmitrak Yu. V. Research results. The dynamic parameters of the grinding bodies are determined directly in the mill grinding chamber which ensure the contactless transmission of information from the grinding ball to the receiving device. A new method of materials self-grinding and the design of a vertical centrifugal mill based on it has been developed. The mill tests during the grinding waste from the production of ceramic products (the battle of insulators, crushed mullite bricks) showed high efficiency and prospects. The tests of a laboratory vibrating mill with one grinding chamber and a rotor diameter of 250 mm for grinding dolomite were carried out. The experiments have shown the possibility of creating vibrating mills for solid materials grinding. In the development of the work of I. N. Plaksin on the flotation of ores with the jet movement of products in the scheme tested by him together with employees in the conditions of the Tekeli processing plant, the modes of joint processing of ores and gold placers were developed at the NCIMM (GTU). It was established that with the unprofitable individual development of alluvial gold mining waste, a positive economic effect can be obtained through their joint processing with ore gold reserves by fine-tuning the concentrate extracted from man-made raw materials by gravitational enrichment methods at a stationary processing plant. It is proved that the addition of the gravitational technology of alluvial gold extraction by flotation methods provides an increase in annual gold production by ~38 % due to the additional extraction of “resistant” forms of gold for gravitational methods. It has been proved in laboratory conditions that the waste slag of the Copper plant of “Ltd. MMP Norilsk Nickel” can be disposed of by joint processing with the ore of current production. It is established that the technology development using metal leaching is promising for the development of Sadonsky plant deposits.

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Prospects and priorities for the reconstruction and development of lithium mining production on the basis of domestic raw materials

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/962/1/012055 ◽

2022 ◽

Vol 962 (1) ◽

pp. 012055

Author(s):

G B Melentiev ◽

G A Yurgenson ◽

L M Delitzyn

Keyword(s):

Industrial Development ◽

Raw Materials ◽

Import Substitution ◽

Processing Plant ◽

Mineral Raw Materials ◽

Useful Components ◽

Reliable Source ◽

New Energy ◽

Modern Technologies ◽

Production Facilities

Abstract The prospects of lithium as a component of new energy are considered. Provides data on the resources of lithium mineral raw materials. Variants of the reconstruction of lithium production facilities in Russia from domestic raw materials are evaluated in order to solve the problem of import substitution. Attention is focused on the choice of objects of priority industrial development and the need to create modern technologies for processing lithium raw materials. It is shown that the restored Zabaikalsk mining and processing plant can be a reliable source of lithium when using new technological solutions for extracting lithium and associated useful components from primary ores and waste of spodumene ores.

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STUDY OF GOLD EXTRACTION FROM STALE TAILINGS BY AGITATION LEACHING

SERIES CHEMISTRY AND TECHNOLOGY ◽

10.32014/2021.2518-1491.11 ◽

2021 ◽

pp. 89-94

Author(s):

A. Altayeva ◽

B. N. Surimbayev ◽

L. S. Bolotova ◽

Zh. Т. Bagasharova ◽

Sh. K. Akilbekova

Keyword(s):

High Efficiency ◽

Raw Materials ◽

Material Composition ◽

Processing Plant ◽

Gold Content ◽

Mineralogical Analysis ◽

Gold Extraction ◽

Initial Size ◽

Valuable Component ◽

Gold Silver

The object of research is technogenic mineral formations-tailings of the Bestube processing plant located within the Bestube gold field. Analytical and technological studies of stale tailings have been carried out. According to the results of analytical studies, the material composition of stale tails was established. The average gold content in stale tailings according to assay analyses is 0.565 g/t, silver 1.56 g/t. The tailings belong to the category of poor sulfide, oxidized raw materials. The main industrially valuable component in the tailings is gold, silver has a subordinate value, and other metals are not of industrial value. Mineralogical analysis established that stale tails are represented by quartz, muscovite, clinochlore, albite, dolomite. Studies were conducted on agitation leaching of stale tailings of the initial size (64.08% of the class –0.074 mm) and after additional grinding to the size of 90% of the class –0.074 mm. Reducing the size contributes to the dissolution of gold from the tailings: at the initial size, 66.28% of gold is dissolved, after regrinding the degree of dissolution of gold from the tailings increases to 87.23%. The results of research on agitation leaching of gold have shown a high efficiency of hydrometallurgical technology for processing stale tailings of a processing plant.

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ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3

Metallurgicheskaya i gornorudnaya promyshlennost ◽

10.33101/s005-59768574 ◽

2018 ◽

pp. 32-37

Author(s):

P.I. Loboda ◽

Younes Razaz ◽

S. Grishchenko

Keyword(s):

Magnetic Properties ◽

Cast Iron ◽

Iron Content ◽

Raw Materials ◽

Direct Reduction ◽

Processing Plant ◽

High Iron Content ◽

High Iron ◽

Direct Restoration ◽

First Time

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.

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SHS PROCESSING OF MINERAL RAW MATERIALS AND PRODUCTION WASTES IN ATMOSPHERIC ENVIRONMENT

СИНТЕЗ И КОНСОЛИДАЦИЯ ПОРОШКОВЫХ МАТЕРИАЛОВ. Сборник тезисов Международной конференции ◽

10.30826/scpm2018013 ◽

2018 ◽

Author(s):

V.E. LORYAN ◽

◽

A.R. KACHIN ◽

I.P. BOROVINSKAYA ◽

◽

...

Keyword(s):

Raw Materials ◽

Atmospheric Environment ◽

Mineral Raw Materials ◽

Production Wastes

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A Brief Review on Solvent-Free Synthesis of Zeolites

Materials ◽

10.3390/ma14040788 ◽

2021 ◽

Vol 14 (4) ◽

pp. 788

Author(s):

Jinlin Mei ◽

Aijun Duan ◽

Xilong Wang

Keyword(s):

High Efficiency ◽

Raw Materials ◽

Solvent Free ◽

High Yield ◽

Control Synthesis ◽

Mechanical Mixing ◽

Synthesis Mechanism ◽

Wastewater Pollution ◽

Low Efficiency ◽

Solvent Free Synthesis

The traditional hydrothermal method to prepare zeolite will inevitably use a large amount of water as a solvent, which will lead to higher autogenous pressure, low efficiency, and wastewater pollution. The solvent-free method can be used to synthesize various types of zeolites by mechanical mixing, grinding, and heating of solid raw materials, which exhibits the apparent advantages of high yield, low pollution, and high efficiency. This review mainly introduces the development process of solvent-free synthesis, preparation of hierarchical zeolite, morphology control, synthesis mechanism and applications of solvent-free methods. It can be believed that solvent-free methods will become a research focus and have enormous industrial application potential.

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Emergence of Polymeric Material Utilising Sustainable Radiation Curable Palm Oil-Based Products for Advanced Technology Applications

Polymers ◽

10.3390/polym13111865 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1865

Author(s):

Rida Tajau ◽

Rosiah Rohani ◽

Mohd Sofian Alias ◽

Nurul Huda Mudri ◽

Khairul Azhar Abdul Halim ◽

...

Keyword(s):

Palm Oil ◽

Raw Materials ◽

Raft Polymerization ◽

Polymeric Materials ◽

Fine Tuning ◽

Advanced Technology ◽

Radiation Processing ◽

Radiation Mechanisms ◽

Processing Technologies ◽

Technology Applications

In countries that are rich with oil palm, the use of palm oil to produce bio-based acrylates and polyol can be the most eminent raw materials used for developing new and advanced natural polymeric materials involving radiation technique, like coating resins, nanoparticles, scaffold, nanocomposites, and lithography for different branches of the industry. The presence of hydrocarbon chains, carbon double bonds, and ester bonds in palm oil allows it to open up the possibility of fine-tuning its unique structures in the development of novel materials. Cross-linking, reversible addition-fragmentation chain transfer (RAFT), polymerization, grafting, and degradation are among the radiation mechanisms triggered by gamma, electron beam, ultraviolet, or laser irradiation sources. These radiation techniques are widely used in the development of polymeric materials because they are considered as the most versatile, inexpensive, easy, and effective methods. Therefore, this review summarized and emphasized on several recent studies that have reported on emerging radiation processing technologies for the production of radiation curable palm oil-based polymeric materials with a promising future in certain industries and biomedical applications. This review also discusses the rich potential of biopolymeric materials for advanced technology applications.

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