Electrochemical Reduction and Dissolution of Aluminium in a Thin-Layer Refinery Process

Описание

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

Конференция: Light Metals Symposium held at the TMS Annual Meeting and Exhibition, 2021

Год издания: 2021

Идентификатор DOI: 10.1007/978-3-030-65396-5_73

Ключевые слова: aluminium, capillary, electrolysis, molten salt, refinery, scrap

Аннотация: The liquid metal refining industry has a demand for new technologies operated at low energy consumption and environmental impact nowadays. This work addresses an approach for Al purification and extraction from scrap in a thin layer of the multiple-capillary molten salt electrochemical system. The two types of single-capillary cellПоказать полностьюs with quasi-reference electrodes were used to study the kinetics of aluminium reduction and dissolution in a narrow (Ø x length) 1 × 1 and 1 × 5 mm channel filled with liquid LiF-AlF3 or equimolar NaCl-KCl with the AlF3 addition at 850 °C. A multiple-capillary Al refinery process can be designed to significantly reduce the specific energy consumption. The new refinery process can be performed at high current densities. The single-capillary electrolysis can be used for kinetics studies. Thin-layer cells should be operated at a thickness no more than 5 mm to compensate the high resistance which may vary in the range from 0.7 to 2.5 Ω at this capillary length. The 64LiF-36AlF3 melt can be used as an electrolyte for the thin-layer electrolysis due to the high electrical conductivity, the wide potential window between Al and Li reduction, and the low liquidus temperature. © 2021, The Minerals, Metals & Materials Society.

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Издание

Журнал: Minerals, Metals and Materials Series

Выпуск журнала: Vol. 6

Номера страниц: 519-524

ISSN журнала: 23671181

Издатель: Springer Science and Business Media Deutschland GmbH

Авторы

  • Yasinskiy A. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Polyakov P. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Moiseenko I. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Padamata S.K. (Siberian Federal University, Krasnoyarsk, Russian Federation)

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