Process for the formulation of potassium chloride from a...

Details Process for the formulation of potassium chloride from a... Process for the formulation of potassium chloride from a...

C - Chemistry, Metallurgy

01

D

C01D 3/04 (2006.01) C05D 1/04 (2006.01)

Patent

CA 2720371

A process for formulating high purity potassium chloride from a carnallite source. The process takes advantage of solubility differences and saturation levels in a multiple salt system generated upon dissolution of carnallite. In the system, the sodium chloride is kept in solution and the magnesium chloride present in the system is controlled to be in a concentration range of between 12% and 25% by weight. This avoids co-precipitation of sodium chloride with the potassium chloride during crystallization and therefore prevents the sodium chloride from contaminating the potassium chloride. The result is high grade potassium chloride.

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