Process for the manufacture of potassium sulphate by...

Details Process for the manufacture of potassium sulphate by... Process for the manufacture of potassium sulphate by...

C - Chemistry, Metallurgy

01

D

23/99

C01D 5/12 (2006.01)

Patent

CA 1203666

ABSTRACT A process for the production of potassium sulphate from solutions containing magnesium chloride, such as solutions of carnallite ore and, in particular, the equilibrium mother liquors of a unit for the treatment of carnallite. According to this process, sodium sulphate and potassium chloride are added to the solutions containing magnesium chloride, so as to precipitate sodium chloride and schoenite, K2SO4?MgSO4?6H2O, and the schoenite obtained is treated in a known manner to produce potassium sulphate.

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