Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1998-09-14
2000-11-07
Nguyen, Ngoc-Yen
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423199, 23302R, C01D 500
Patent
active
061432717
ABSTRACT:
The present invention provides a process for producing potassium sulfate from a potash and a sodium sulfate source, comprising the steps of: (a) treating a portion of the potash source and sodium sulfate source, such that glaserite is crystallized out of solution and a first mother liquor is produced; (b) converting the glaserite to precipitate potassium sulfate in a second mother liquor; (c) recycling the second mother liquor to the portion of the potash source and sodium sulfate source; (d) subjecting the first mother liquor to evaporative crystallization to produce sodium chloride in a third mother liquor; and (e) recycling the third mother liquor to the portion of the potash source and sodium sulfate source.
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Mullin, J.W, "Crystallization", 2.sup.nd Edition, pp. 258-299, 1972 (No Month).
Holdengraber Curt
Lampert Shalom
Dead Sea Works
Friedman Mark M.
Nguyen Ngoc-Yen
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