Process of producing a potassium sulfate salt

Details Process of producing a potassium sulfate salt Process of producing a potassium sulfate salt

C - Chemistry, Metallurgy

01

D

23/99

C01D 5/02 (2006.01)

Patent

CA 1143134

ABSTRACT OF THE DISCLOSURE A process of producing a potassium sulfate salt comprising reacting sulfuric acid with potassium chloride at an equivalent ratio of sulfuric acid to potassium chloride of 1.07 to 1.40 at a temperature of from the melting point of potassium bisulfate to about 500°C while allowing the resulting solid-liquid mixture at the final reaction stage to be substantially in a state of wet cake, said potassium bisulfate being present in the reaction system until the termination of the reaction because of the excess sulfuric acid. In such a process, the reaction proceeds smoothly at a relatively low temperature and is completed in an extremely shortened period of time to produce a potassium sulfate salt with an extremely low chlorine content which is useful as a raw material for the production of potassium-containing chemical manures to be suitably applied onto the farmland of tobacco etc. which are apt to have their growth hampered by chlorine values. In the present process, when the reaction mixture is kneaded, the rate of reaction is extremely accelerated, and as a result, the reaction period of time needed for lowering the chlorine content of the product to a limited level is markedly shortened.

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