Method of treating converted potassium sulfate for reducing...

Details Method of treating converted potassium sulfate for reducing... Method of treating converted potassium sulfate for reducing...

C - Chemistry, Metallurgy

01

D

23/99

C01D 5/16 (2006.01) C01D 5/02 (2006.01)

Patent

CA 1177223

Abstract of the Disclosure A small amount of chlorine contained in the converted potassium sulfate obtained by dry-mixing for heating potassium chloride with sulfuric acid or potassium hydrogensulfate can greatly be reduced by totally pulverizing the potassium sulfate to 60 mesh pass, and by calcining at 300 to 500°C for 5 minutes to one hour. The effect of reducing the chlorine content is further improved by mixing therewith a small amount of water or dilute sulfuric acid on calcination.

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