Lithium halide brine purification

US4376100A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• John M. Lee · Lake Jackson, US
• William C. Bauman · Lake Jackson, US

Key dates

• Filing date: Nov 23, 1981
• Grant date: Mar 8, 1983
• Expiry date: Nov 23, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01D15/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A resin/aluminate composite which has been substantially loaded with Li.sup.+ values by being contacted with a contaminated, Li.sup.+ -containing aqueous solution, is pre-washed with a substantially pure, concentrated NaCl brine to remove the contaminants without removing the Li.sup.+ values, then is washed with water to leach out much, but not all, of the Li.sup.+ values. The resin/aluminate composite comprises a macroporous anion exchange resin having crystalline LiX.2Al(OH).sub.3 dispersed therein, where X is halide.