Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: Light Metals Symposia at the The-Minerals-Metals-Materials-Society (TMS) Annual Meeting; Anaheim, CA; Anaheim, CA

Год издания: 2022

Идентификатор DOI: 10.1007/978-3-030-92529-1_56

Ключевые слова: aluminum production, autoclave leaching, carbon dust, gallium, germanium, hall–héroult process, wastes

Аннотация: Gallium and germanium are practically important trace elements used in various high-tech areas as photovoltaics, electronic equipment, semiconductor gamma-ray detectors, infrared equipment, etc. New secondary raw materials for their extraction are a subject of a thorough search. In this study, new evidence of the presence of germanПоказать полностьюium and gallium in the wastes from the Hall–Héroult process was demonstrated and comprehensively discussed, and a method of their extraction was proposed. The concentration of gallium in the carbon dust reaches 0.02% and the concentration of germanium is below the detection limit. After the treatment of carbon dust, the concentration of trace elements is drastically increased. The carbon concentrate being a product of carbon dust treatment can be combusted to accumulate gallium in the ash while germanium distributes between the ash and the sublimates from the concentrate combustion due to the volatility of monoxide GeO. The concentration of gallium in the ash reaches 0.5 wt.% and the concentration of germanium highly depends upon the combustion temperature and the partial pressure of oxygen. The results of trace elements extraction in the acidic and basic environment are shown. © 2022, The Minerals, Metals & Materials Society.

Журнал: Minerals, Metals and Materials Series

Номера страниц: 417-422

ISSN журнала: 23671181

Издатель: Springer Science and Business Media Deutschland GmbH

• Yasinskiy A. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation, IME Process Metallurgy and Metal Recycling, RWTH Aachen University, Aachen, Germany)
• Shimanskii A. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation)
• Losev V. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation)
• Buyko O. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation)
• Kazantsev Y. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation)
• Simonova N. (Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation)

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