Removal of ammonia from sodium tungstate solutions

Details Removal of ammonia from sodium tungstate solutions Removal of ammonia from sodium tungstate solutions

1985-01-11

1985-12-24

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 53, 423 61, C01G 4100

Patent

active

045605394

ABSTRACT:
A process is disclosed for removing ammonia from a sodium tungstate solution. The process involves heating the solution at from about 80.degree. C. to about 95.degree. C., while at the same time maintaining the pH above about 9.4 by addition of sodium hydroxide to the sodium tungstate solution. The heating is carried out for a period of time sufficient to allow the essentially complete removal of the ammonia.

REFERENCES:
patent: 2893832 (1959-07-01), Loung
patent: 4311679 (1982-01-01), Queneau et al.

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