Alkaline processing of naturally occurring calcium aluminium...

Details Alkaline processing of naturally occurring calcium aluminium... Alkaline processing of naturally occurring calcium aluminium...

C - Chemistry, Metallurgy

01

B

23/67

C01B 25/01 (2006.01) C01B 25/30 (2006.01) C01F 7/06 (2006.01)

Patent

CA 1222615

ABSTRACT A process for production of alkali metal phosphates from material containing calcium, iron and aluminium phosphates, for example naturally occurring phosphate rocks, involves calcining the material with alkali metal carbonates to produce alkali metal phosphates, which are then leached from the calcined product under conditions that yield relatively concentrated solutions.

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