Processing Finely Dispersed Technogenic Raw Materials for Aluminum Production in Order to Extract Valuable Components

Nemchinova, N. V.; Бараускас, А. Э.; Tyutrin, A. A.; Vologin, V. S.

doi:10.3103/s1067821221060158

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Российская алюминиевая промышленность является одной из самых ведущих отраслей отечественной промышленности, крупнейшим производителем алюминия и изделий на его основе. Сотрудники предприятий и организаций компании «РУСАЛ», представители образовательных и научных организаций постоянно совершенствуют технологии получения глинозема, алюминия и алюминийсодержащих изделий, повышая при этом экономические показатели и предлагая пути решения экологических проблем металлургического производства [1][2][3][4][5][6].…”

Section: Introductionunclassified

Reducing the environmental impact of aluminum production through the use of petroleum pitch

Nemchinova,

Konovalov,

Konovalov

et al. 2024

jour

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This study is aimed at developing a technology for obtaining petroleum pitch as a binder for anode mass used in the electrolytic production of aluminum from fuel oils of catalytic liquid-phase oxidative oil cracking. A review of published data on the existing methods for obtaining petroleum pitch and its properties is carried out in order to define research directions. A method for producing petroleum pitch by catalytic liquid-phase oxidative cracking of crude oil using heterogeneous metal complex catalysts is proposed. The process of petroleum pitch production is shown to undergo several stages, including homogenization of fuel oil and modifying additives; oxidative cracking of fuel oil during heating of homogenized fuel oil in a furnace; catalytic liquid-phase oxidative cracking of fuel oil with removal of distillates; rectification of light fractions; condensation of distillates; collection of light oil products; oxidation of bottom residues by air and steam; removal of oxidation distillates and petroleum pitch; and pitch pelletizing. According to the conducted comparison of the as-obtained petroleum pitch with the B-1 coal tar pitch produced by the Altai Koks JSC, the proposed material meets the technological requirements of the Krasnoyarsk Aluminum Plant of the RUSAL company. In terms of sulfur content, the proposed petroleum pitch is superior to coal tar pitch. The experiments conducted at an aluminum plant showed the petroleum pitch to contain no harmful polyaromatic hydrocarbons, in particular, carcinogenic benz(a)pyrene. Therefore, replacement of coal tar pitch with petroleum pitch could provide technological and environmental advantages for primary aluminum producers, as well as for enterprises producing various carbon materials.

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Section: Introductionunclassified

Reducing the environmental impact of aluminum production through the use of petroleum pitch

Nemchinova,

Konovalov,

Konovalov

et al. 2024

jour

Self Cite

View full text Add to dashboard Cite

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Review on the Preparation of Cryolite from Industry Waste Containing Fluorine

Cao,

Peng,

Dong

et al. 2024

J. Sustain. Metall.

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Analysis of the magnetohydrodynamic parameters of S-8BM (S-8B) electrolyzers in the modernization of aluminum smelters

Pinaev,

Radionov,

Orlov

et al. 2024

jour

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The article aims to determine the magnetohydrodynamic parameters of an aluminum electrolyzer in order to compare different types of bus arrangements used in baths with a Soderberg anode. The electrical parameters of the electrolyzer (current distribution across blooms and anode studs) and magnetic field parameters were computed using the Blums V5.07 program (Polyfem, Russia). Data on circulation rates and skew of the metal in the electrolyzer were obtained using the MHD-Valdis program (developed by V. Boyarevich, University of Greenwich, UK). In the course of the studies, mathematical models of the C-8BM (C-8B) electrolyzer with various bus arrangements were built. Three bus arrangements were selected for testing the installation of a bridge designed to close the current distribution in the anode bus arrangement of the electrolyzer. These types of bus arrangements were realized in two variants: with and without a bridge. The obtained circulation rates and skew of the metal were used to evaluate the possibility of modernizing baths with a Soderberg anode without significant capital costs. When using the first type of bus arrangement, the best current distribution was achieved for the blooms with limits of ~757 A (for the variant without a bridge) and ~656 A (for the modernized variant with closed series), as well as for the anode studs having limits of ~1754 A and ~1609 A, respectively. With the use of the third bus arrangement variant, the current distribution was shown to slightly decrease following the installation of a bridge between the anode bus bars. The obtained results suggest that in the modernization of a C-8BM (C-8B) electrolyzer with different types of bus arrangements, current distribution across blooms and anode studs, magnetic field characteristics (By and Bz components), as well as circulation rates and skew of the metal, have no significant impact on the efficiency of this electrolyzer, which contributes to a faster transition to EcoSoderberg bath electrolysis without significant economic costs.

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Processing Finely Dispersed Technogenic Raw Materials for Aluminum Production in Order to Extract Valuable Components

Cited by 3 publications

References 29 publications

Reducing the environmental impact of aluminum production through the use of petroleum pitch

Reducing the environmental impact of aluminum production through the use of petroleum pitch

Review on the Preparation of Cryolite from Industry Waste Containing Fluorine

Analysis of the magnetohydrodynamic parameters of S-8BM (S-8B) electrolyzers in the modernization of aluminum smelters

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