Chemistry: physical processes – Physical processes – Crystallization
Patent
1996-05-21
1998-06-16
Straub, Gary P.
Chemistry: physical processes
Physical processes
Crystallization
4232062, 423421, 299 5, C01D 724, F21C 4116
Patent
active
057662703
ABSTRACT:
A solution mining process for recovering sodium values from an underground deposit of a sodium bicarbonate containing ore is disclosed. The process involves contacting the ore with an aqueous sodium carbonate-containing solution to produce a dilute brine which is stripped with steam to reduce the bicarbonate content and increase the carbonate content. The dilute carbonate/bicarbonate solution from the stripper is fed to a sodium carbonate decahydrate crystallizer to produce pure sodium carbonate decahydrate crystals and a mother liquor containing less than about 4% sodium bicarbonate.
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Chastain Richard W.
Neuman Thomas H.
Straub Gary P.
Tg Soda Ash, Inc.
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