Heavy metals as impurities in the bayer production cycle of the aluminum hydroxide from sierra leone bauxite. Preliminary study
Автор: Dobra Gheorghe, Iliev Sorin, Cotet Lucian, Boiangiu Alina, Hulka Iosif, Kim Lidia, Catrina Gina Alina, Filipescu Laurentiu
Журнал: Журнал Сибирского федерального университета. Серия: Техника и технологии @technologies-sfu
Статья в выпуске: 2 т.14, 2021 года.
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This paper is reporting the data of a preliminary study on heavy metals distribution in the fluid and solid phases involved in dry and classified aluminium hydroxide production through Bayer process. For heavy metals released in the fluid phases, the main source of contamination is the bauxite through its mineralogical phases soluble or insoluble in alkaline solution. It was shown that predominant way to transfer contaminating elements in aluminium hydroxide particles is the occlusion of very fine particles coming from mineralogical phases of bauxite residue. New born mineralogical phases from bauxite residue, like poor crystallized sodalite and cancrinite, are the most active occlusion contaminants.
Aluminium hydroxide, heavy metals, occlusion, bauxite, bauxite residue, bayer process
Короткий адрес: https://sciup.org/146282214
IDR: 146282214 | DOI: 10.17516/1999-494X-0296
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