Hydrometallurgical Treatment of Arsenic Waste

Vircíková, Edita ; Hiskey, J. B. ; Lech, Peter ; Molnár, Ludovít ; Scheiner, B. J.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 12
Publication Date: Jan 1, 1993
This paper describes the results of a study of hydrometallurgical methods of producing sodium arsenate for the glass industry from arsenic oxide wastes occurring in carbon dioxide washing. This paper addresses the following aspects: theoretical assumptions for leaching arsenic and its oxides, experimental results of As(III) oxidation to As(V) in aqueous solutions, sodium arsenate crystallization (the system As2O5-Na2O-H2O), characteristics of the crystalline product, and pilot-plant tests using sodium arsenate in the glass industry.
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