Description of the Methodology for Conducting an Experiment on Dust Deposition of Mining and Metallurgical Production

Filin, A.E.; Kurnosov, I.Yu.; Kolesnikova, L.A.; Ovchinnikova, T.I.; Kolesnikov, A.S.

doi:10.18796/0041-5790-2022-9-67-72

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…In the heat treatment of composite pellets containing carbon, a decrease in natural gas consumption by up to 50% was found in comparison with the roasting of pure chromite pellets; this is due to the burnout of about 50% of the carbon of the solid fuel in the pellets. The average carbon content in the composite pellets after heat treatment is 2.35%, and in the bed of calcined pellets containing 2.4% of carbon, after the heat treatment, it is about 1% [56][57][58][59][60][61][62].…”

Section: Namementioning

confidence: 97%

Research on the Production of Pigments Based on Composite Pellets in the Recycling of Industrial Waste

et al. 2023

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This article presents the complex processing of low-grade and substandard chromium ores, as well as sludge tailings, with the production of composite chromium-containing materials and pigments, while improving environmental performance in the Republic of Kazakhstan through the utilization and processing of technogenic raw materials. In this work, to study the physicochemical properties of the starting materials, modern analytical, thermodynamic, chemical, granulometric, as well as computational, mathematical, laboratory, and experimental methods were used. In particular, studies of a method for producing composite pellets for chromite pigments based on industrial technogenic waste of the Republic of Kazakhstan are presented. Based on the results of the experimental studies, composite pellets were obtained, having a compressive strength of 150–220 kg/pellet and containing 49.7% of chromium oxide and 0.5–1.0% of carbon in its composition. The resulting chromite pigment based on the composite pellets is a modification of chromium oxohydroxide with the formula γ-CrOOH. The density of the resulting pigment is 3.4 kg/m3. The chromite pigment based on the composite pellets is recommended for use in various coloring compositions, including using it for printing on cotton and mixed fabrics intended for sewing outerwear.

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Section: Namementioning

confidence: 97%

Research on the Production of Pigments Based on Composite Pellets in the Recycling of Industrial Waste

et al. 2023

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“…One of the possible aerological ventilation schemes for double-way distilling tunnels, with the help of which forced circulation of air masses in the tunnel space can be ensured, is a heat and mass transfer scheme using a technical (specialized) rigid ventilation structure located at the tunnel arch (false ceiling) [17,18,19]. A similar solution has already found its application, for example, in ventilation systems for road tunnels.…”

Section: Problem Statementmentioning

confidence: 99%

Methodological approach to determining the area of air recycling on metro lines with double track tunnels

Zhikharev

2024

E3S Web Conf.

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The article discusses the issues of operating existing metro lines with double-track tunnels. Significant differences between average annual, average monthly and extreme values of outdoor air temperature affecting the thermodynamic and thermophysical parameters of the mine atmosphere of subway tunnels, both in Russia and abroad, are analyzed. The results of a comprehensive analysis of the conditions that determine the temperature regime of the lines of double-track tunnels are presented. Air recirculation in the tunnels has been determined considering climatic conditions. Engineering and technical calculations have been carried out in metro tunnels when the seasonal periods of their operation change. Each of these periods is characterized by its own temperature, for example, for the winter period these are: average winter temperatures, temperatures of the coldest month, the coldest five-day period. The obtained results of the research work will make it possible to select the amount of air for each specific variant of the year, which will ensure, during the operation of this kind of metro lines, the standard thermodynamic parameters of the air environment, both in underground stations and in metro tunnels, and possibly lead to a positive economic effect.

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“…The studies were conducted with the help of the complex program "Astra-4" [44]. The purpose of this work is to evaluate the effect of temperature and pressure in the thermodynamic simulation of reductive electric melting [29,42,[45][46][47][48][49][50] under conditions of simultaneous interaction of nickel Ni(II), cobalt Co(II) and iron oxides Fe2O3(III) with carbon and subsequent extraction of Ni, Co and Fe.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic modeling of the reaction of simultaneous interaction of nickel (II), cobalt (II) and iron (III) oxides with carbon

Колесникова

Nurbaeva²,

Sabyrbayeva³

et al. 2023

E3S Web Conf.

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This paper considers thermodynamic modeling of electric smelting of Allarechenskoye deposit dumps for nickel, cobalt, and iron extraction. Thermochemical transformations in the reaction of interaction of carbon with oxides of nickel (II), cobalt (II) and iron (III) are considered. The investigations of thermochemical transformations of the chemical-phase composition of the system were carried out using the software complex “Astra-4” developed by a team of scientists at the Bauman Moscow State Technical University. Thermochemical transformations and chemical-phase composition of the system as a function of T (temperature) and P (pressure) were studied. In particular, the temperature was in the range from 973K to 1773K and the pressure range was taken from 0.001 MPa to 0.1 MPa. According to the results, it was found that iron in the system transitions to condensed iron, with the degree of transition (αFe) from 29.0% at T = 1173K to 99.1% at 1773K, the degree of transitions of nickel to condensed nickel is 100% before T = 1273K, and with an increase in temperature from 1273K to 1773K decreases to 99,98%; the transition of cobalt to the gas phase is distributed similarly to nickel.

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Description of the Methodology for Conducting an Experiment on Dust Deposition of Mining and Metallurgical Production

Cited by 8 publications

References 1 publication

Research on the Production of Pigments Based on Composite Pellets in the Recycling of Industrial Waste

Research on the Production of Pigments Based on Composite Pellets in the Recycling of Industrial Waste

Methodological approach to determining the area of air recycling on metro lines with double track tunnels

Thermodynamic modeling of the reaction of simultaneous interaction of nickel (II), cobalt (II) and iron (III) oxides with carbon

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