Process for the removal of arsenic compounds from tungsten or mo

Details Process for the removal of arsenic compounds from tungsten or mo Process for the removal of arsenic compounds from tungsten or mo

1982-01-21

1983-12-13

Carter, Herbert T.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

423 53, 423 61, 423 87, 209 5, C22B 111, C22B 112, C01G 3900, C01G 4100

Patent

active

044203314

ABSTRACT:
A process for the removal of arsenic compounds from tungsten and/or molybdenum concentrates by selective extraction, characterized in that the concentrates are extracted with an aqueous solution of a ferric compound at a pH below 2.5 and a temperature of at least 60.degree. C.

REFERENCES:
patent: 3220796 (1965-11-01), Espinosa
patent: 3674424 (1972-07-01), Stanley et al.
patent: 4242124 (1980-12-01), Makipirtti
Dorfler et al., "Journal of Metals", May, 1981, pp. 48-54.

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