METHOD OF EXTRACTION OF ARSENIC (+5) FROM ACID SULFATE SOLUTIONS

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FIELD : technology of non-ferrous, rare and trace rare metals. SUBSTANCE : proposed method includes extraction and separation of arsenic by organic extracting agent. Extracting agent is prepared from mixture of dialkyl methyl phosphonate in the amount of 40-70% with trialkyl amine in the amount of 20-30 vol-% and inert diluting agent in the amount of 10-30%. At extraction, arsenic changes to organic phase. EFFECT : increased degree of extraction of arsenic (+5); enhanced selectivity and economical efficiency. 5 tbl, 6 ex