Process for the manufacture of potassium sulphate by treating solutions containing magnesium chloride and potassium chloride
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United States of America Patent
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Aug 6, 1985
Grant Date -
N/A
app pub date -
Mar 11, 1983
filing date -
Mar 11, 1982
priority date (Note) -
Expired
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Abstract
Process for the manufacture of potassium sulphate from solutions containing magnesium chloride and potassium chloride from solutions, more particularly from mother liquors issuing from the treatment of carnallite. According to this process sodium sulphate and potassium chloride are added to the solutions so as to precipitate sodium chloride and schoenite (K.sub.2 SO.sub.4.MgSO.sub.4.6H.sub.2 O) and the schoenite is treated in a known manner to produce potassium sulphate.
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