Recovery of copper from arsenical drosses by ammonium arsenate l

Details Recovery of copper from arsenical drosses by ammonium arsenate l Recovery of copper from arsenical drosses by ammonium arsenate l

1981-12-04

1983-01-18

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 33, 423 35, 423 37, 423 87, 423602, C01G 314, C22B 300, C22B 3004, C01G 2800

Patent

active

043691641

ABSTRACT:
A process for leaching copper and arsenic from copper dross containing copper arsenide and separated from molten lead bullion comprises leaching the dross with an aqueous ammoniacal solution containing arsenate as the predominant anion under oxidizing conditions to obtain a leachate, removing copper from the leachate to obtain a raffinate and re-cycling raffinate to the leaching stage, and removing a bleed of raffinate from the circuit and precipitating a substantially insoluble arsenic compound from the raffinate bleed to remove arsenic from the circuit.

REFERENCES:
patent: 3971652 (1976-07-01), Bryson

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