Process for preparing metallic sulphates

Details Process for preparing metallic sulphates Process for preparing metallic sulphates

C - Chemistry, Metallurgy

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C01G 3/10 (2006.01) C01G 9/06 (2006.01) C01G 11/00 (2006.01) C01G 49/14 (2006.01)

Patent

CA 1071837

ABSTRACT An improved process for preparing a metallic sulphate in a reaction zone from mixing of the corresponding metallic sulphide concentrates with ammonium sulphate and heating. Heating preferably includes di- rectly contacting the mixture with products of combustion of a heating fuel at temperatures between about 150°C and about 480°C. The products of combustion may by diluted with a gas, and the metallic sulphate of the corresponding metallic sulphide may be initially mixed with the mixture to inhibit the development of semi-fluid conditions in the reaction of the metallic sulphide concentrates with ammonium sulphate. -1-

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