Method for the production of sulphate of potash granulates, sulphate of potash granulate obtained thereby, and use thereof
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United States of America Patent
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Nov 26, 2019
Grant Date -
Aug 3, 2017
app pub date -
Sep 30, 2015
filing date -
Sep 30, 2014
priority date (Note) -
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Abstract
The invention relates to a method for producing sulphate of potash granulates, wherein 0.1 to 7.5 wt % of a sodium salt selected from among sodium chloride, sodium sulphate, sodium sulphate hydrates, sodium hydroxide and mixtures thereof are added to the sulphate of potash during the granulation process, the percentage by weight being in relation to the sulphate of potash used. In addition, 0.1 to 2.5 wt % of water are added prior to or during the granulation process. The invention also relates to the granulates obtained by said method as well as the use of sodium salts and glaserite and mixtures thereof for improving the mechanical properties of sulfate of potash granulates. The sulphate of potash granulates produced by the method of the invention have significantly greater bursting strength and significantly greater abrasion resistance than granulates known from the prior art.
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