Recovery of tungsten and rhenium

Details Recovery of tungsten and rhenium Recovery of tungsten and rhenium

1985-08-22

1986-04-22

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group viib metal

423 55, 423 50, C01G 4100, C01G 4700

Patent

active

045841853

ABSTRACT:
A process is disclosed for recovering tungsten and rhenium from a tungsten and rhenium bearing solution. The process involves adding sufficient hydrochloric acid to the solution to form a first precipitate containing essentially all of the tungsten and a first mother liquor having an acid concentration of at least about 1.25 normal, and containing the major portion the rhenium, followed by separating the first precipitate from the first mother liquor. A source of sulfide ions is then added to the first mother liquor with agitation for a sufficient time and with the amount of sulfide ions being sufficient to form a second precipitate containing essentially all of the rhenium which was in the first mother liquor, and a second mother liquor, followed by separation of the second precipitate from the second mother liquor.

REFERENCES:
patent: 1804429 (1937-05-01), Noddack et al.
patent: 2316583 (1943-04-01), Highrites et al.

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