Recovery of tungsten from ferrotungsten

Details Recovery of tungsten from ferrotungsten Recovery of tungsten from ferrotungsten

1996-06-05

1998-08-04

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

C01G 3714

Patent

active

057889384

ABSTRACT:
A method is provided whereby tungsten values are recovered from ferrotungsten by completely oxidizing the ferrotungsten at high temperatures in an oxygen atmosphere followed by digestion with sodium hydroxide to form soluble sodium tungstate. The sodium tungstate is then purified by conventional means. The method may be used to recover at least about 90% of the tungsten values present in the ferrotungsten.

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