Process for the treatment of iron and manganese tungstates

Details Process for the treatment of iron and manganese tungstates Process for the treatment of iron and manganese tungstates

C - Chemistry, Metallurgy

22

B

53/148

C22B 34/36 (2006.01) C22B 1/06 (2006.01)

Patent

CA 1052580

ABSTRACT OF THE DISCLOSURE A process for the treatment of an ore containing iron and/or manganese tungstates, e.g., ferberite, wolframite and huebnerite, comprising contacting the ore with an excess of hydrogen sulphide at a temperature in the range of about 700 to 1200°C. is disclosed. The tungsten disulphide formed may be separated. The process provides a method of increasing the tungsten content of the ore.

221281

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