Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.17580/tsm.2016.04.04
Ключевые слова: aluminum fluoride, aluminum industry, aluminum production wastes, cryolite, excess electrolyte, regeneration cryolite, solid fluorine-carbon containing wastes.
Аннотация: This article identifies the main types of solid fluorine-carbon containing wastes which may be processed with obtaining aluminium fluoride AlF3. There was calculated the mass of excess electrolyte, forming in the conditions of use of electrolyzers with baked anodes and "dry" gas purification. Experimental data of aluminium fluorideПоказать полностьюobtaining from wastes are shown. Implementation of this technology may reduce the consumption of fresh AlF3 by 6-8 kg per a ton of metal, and scarce fluorite concentrate consumption. Ecological situation in aluminium smelter regions may be significantly improved. The main waste types in Soderberg aluminum technology are: gas purification dust and sludges, coal froth flotation tails, electrolyzer overhaul materials, nonprocessed part of coal froth, mechanical wastes (dust, etc.). Aluminum production in electrolyzers with baked anodes and "dry" gas purification form the following wastes: electrolyzer overhaul materials, small amount of coal froth and excess electrolyte (a new type of wastes). Sodium oxide (Na2O), contained in alumina, causes the formation of excess electrolyte. Authors used the results of the investigations, carried out within the Federal Target Program "Investigations and developments by the priority ways of development of scientific-Technical complex of Russia for the period of 2014-2020". Unique identifier of applied research and experimental developments is RFMEF I 5 7 7 1 5 X 0 1 9 0.
Журнал: Tsvetnye Metally
Выпуск журнала: Is. 4
Номера страниц: 23-26