Chloride leach process for recovering metal values in the presen

Details Chloride leach process for recovering metal values in the presen Chloride leach process for recovering metal values in the presen

1979-07-27

1981-01-13

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75104, 75114, 75115, 75117, 75118R, 75120, 75121, 423 39, 423 87, C22B 1304, C22B 1104, C22B 1508, C22B 1922

Patent

active

042447356

ABSTRACT:
An improvement in the hydrometallurgical recovery of metals, such as, lead, silver, gold, antimony, and bismuth from materials such as flue dust in the presence of arsenic, comprising precipitating arsenic as an insoluble ferric-arsenic compound in the first processing step, carrying the insoluble arsenic compound through a chloride leach step, in which it is insoluble, to recover the metals, and disposing of the residue in which the arsenic has been fixed with ferric ions to render it non-polluting, or alternatively, recovering the arsenic by caustic leach and crystallization.

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