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US 2003/0113253 A1Published application
Method of producing potassium sulfate
AssigneeDirdal Rand Technologies
InventorGary Derdall
Life of this patent
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Abstract
A process for producing potassium sulfate from potash and sodium sulfate, which involves providing a source of sodium sulfate and passing the sodium sulfate through cationic exchanger. Eluted potassium sulfate containing sodium sulfate is reacted with potash to form further potassium sulfate.
Claims10
A process for producing potassium sulfate from potash and sodium sulfate, comprising:
- providing a source of hot concentrated sodium sulfate brine;
- passing said sodium sulfate brine, in molar excess, through a potassium cationic exchanger;
- and
- reacting eluted potassium sulfate brine containing sodium sulfate with solid potash to form further potassium sulfate.
1 more element
Dependencies are inferred from the claim text.