Method for producing soluble potassium sulfate

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United States of America

PATENT NO 10981838
APP PUB NO 20190119175A1
SERIAL NO

16086619

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Abstract

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Method for producing soluble potassium sulfate by recrystallization of crude potassium sulfate wherein the crude potassium sulfate contains an amount of potassium, calculated as K2O, of about 15 wt % or higher, and the resulting potassium sulfate crystalline material conforms with the following characteristics: the amount of insoluble material is less than about 0.05 wt %, a 1 wt % solution of the potassium sulfate has a pH below about 6, and/or 1 pH unit lower than the pH of the crude potassium sulfate, the fraction obtained after crystallization has an average particle size within the following parameters: (i) d90about 0.02 mm, and (iii) dust amounts to about 0.4 wt % or less, whereby the resulting potassium sulfate contains more than 51% potassium, calculated as K2O.

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Patent Owner(s)

Patent OwnerAddress
WHITE NICOLAS2 ROUTE DE SEPMERIES MARESCHES 59990
LUTS PETERSOLVELD 74 TESSENDERLO 3980
CLAEYS AURELIENKASTEELSTRAAT 78 OVERIJSE 3090
MAERTENS FAYEVROENTESTRAAT 38A SCHAFFEN 3290
BROCKMANS GEORGES MARINUS ALFONSBAAL 24 TESSENDERLO 3980

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brockmans, Georges Marinus Alfons Tessenderlo, BE 1 0
Claeys, Aurélien Overijse, BE 1 0
Luts, Peter Tessenderlo, BE 3 0
Maertens, Faye Schaffen, BE 5 3
White, Nicolas Maresches, FR 5 13

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