Method for reducing impurities in hexammine cobalt halide compou

Details Method for reducing impurities in hexammine cobalt halide compou Method for reducing impurities in hexammine cobalt halide compou

1991-05-20

1992-04-07

Morris, Theodore

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423138, 423140, 423144, 423155, 423163, 423158, 423324, 423462, 423463, C01G 5112

Patent

active

051026333

ABSTRACT:
A method for reducing impurity levels of calcium, magnesium and/or silicon in hexammine cobalt halide compounds involves the addition of ferric ions and, optionally, soluble fluorides to an aqueous hexammine cobalt (III) chloride solution having a pH of at least 9. Insoluble compounds of magnesium fluoride, calcium fluoride, and/or ferric hydroxide and silicon coprecipitates are removed from the solution by filtration.

REFERENCES:
patent: 4214894 (1980-07-01), Ritsko et al.
patent: 4214896 (1980-07-01), Cheresnowsky
patent: 4594230 (1986-06-01), Scheithauer et al.
patent: 4840775 (1989-06-01), Husted
patent: 4840776 (1989-06-01), Husted

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