Method of treating converted potassium sulfate for reducing a sm

Details Method of treating converted potassium sulfate for reducing a sm Method of treating converted potassium sulfate for reducing a sm

1982-01-29

1983-12-13

Straub, Gary P.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

423552, 71 63, C01B 701, C01D 1506

Patent

active

044204680

ABSTRACT:
A small amount of chlorine contained in the converted potassium sulfate obtained by dry-mixing and heating potassium chloride with sulfuric acid or potassium hydrogensulfate can greatly be reduced by totally pulverizing the potassium sulfate to 60 mesh pass, and then calcining at 300.degree. to 500.degree. C. for 5 minutes to one hour. The chlorine content is further reduced by adding a small amount of water or dilute sulfuric acid prior to calcination.

REFERENCES:
patent: 1389861 (1921-09-01), Comment
patent: 3006726 (1961-10-01), Simon

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