Rock treatment process

Details Rock treatment process Rock treatment process

C - Chemistry, Metallurgy

01

B

23/76

C01B 25/22 (2006.01) C01B 25/222 (2006.01) C01B 25/223 (2006.01)

Patent

CA 1164628

ABSTRACT Phosphate rock can be heat treated at 450° to 600°C to convert the organics to filterable carbon and the rock converted to wet process phosphoric acid of reduced colour and with reduced foaming. Rocks having high acid soluble organics but low total organics, and rocks containing a high content of acid insoluble heat labile iron sulphide are especially suitable.

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