Patent Number: 6,251,346

Title: Solution mining of carbonate/bicarbonate deposits to produce soda ash

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.

Inventors: Neuman; Thomas H. (Salt Lake City, UT), Chastain; Richard W. (Lyman, WY)

Assignee: Tg Soda Ash, Inc.

International Classification: C01D 7/24 (20060101); C01D 7/00 (20060101); C01D 7/12 (20060101); E21B 43/00 (20060101); E21B 43/28 (20060101); C01D 007/12 ()

Expiration Date: 06/26/2018