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US 5,549,876 AGranted
Production of potassium sulfate using differential contacting
AssigneeDead Sea Works Ltd.
InventorsTuvia Zisner, Curt Holdengraber, Shalom Lampert
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Abstract
A process for the manufacture of potassium sulfate from a sodium sulfate source, potash and water, comprising the steps of: (a) introducing the sodium sulfate source, water and potash into a differential countercurrent contactor; and (b) causing the sodium sulfate source, potash and water to contact differentially to produce potassium sulfate.
Claims11
Process for the manufacture of potassium sulfate from a solid sodium sulfate source, potash and water, comprising
- introducing the solid sodium sulfate source, water and potash into a single vessel differential countercurrent contactor;
- and
- causing said sodium sulfate source, potash and water to contact countercurrently and differentially so as to establish countercurrent flow between the solid and liquid phases to produce potassium sulfate.
Dependencies are inferred from the claim text.