Process for the preparation of granulated potassium chloride

C - Chemistry – Metallurgy – 01 – D

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C01D 3/22 (2006.01) B01J 2/00 (2006.01) B01J 2/22 (2006.01) C05D 1/02 (2006.01)

Patent

CA 2213738

A process for producing granulated potassium chloride, comprising: forming a mixture of potassium sulfate and potassium chloride; melting said mixture (5); bringing said molten mixture into physical contact with a cooling surface provided with recesses (16), said recesses being substantially of dimension and shape of the granules to be produced, said surface being cooled, whereby solidification of the molten mixture is obtained; and collecting the solid granules from the said surface.

Ce procédé de production de chlorure de potassium granulé comprend les étapes consistant à: former un mélange de sulfate de potassium et de chlorure de potassium; faire fondre ce mélange (5); porter ce mélange en fusion en contact physique avec une surface de refroidissement (16) pourvue d'évidements, lesquels possèdent sensiblement la dimension et la forme des granules à produire, cette surface étant refroidie, ce qui permet d'obtenir la solidification du mélange en fusion; et enfin, recueillir les granules solides à partir de cette surface.

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