FIELD: extraction of yttrium. SUBSTANCE: method involves providing bauxite reprocessing waste product in the form of red sludge which may be used as basic material; treating with 5-7%-sulfuric acid solution at 85-95 C, with liquid : solid ratio of 3-5:1. Solvent is produced by diluting concentrated sulfuric acid with water and solution obtained by processing red sludge. EFFECT: increased efficiency and simplified method. 2 cl, 2 tbl
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Authors
Dates
1996-03-27—Published
1993-08-03—Filed