High purity lithium salts and lithium salt solutions

Details High purity lithium salts and lithium salt solutions High purity lithium salts and lithium salt solutions

1998-10-16

2000-01-25

Griffin, Steven P.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

C01B 1104, C01B 1112, C01B 1766, C01D 500

Patent

active

060175001

ABSTRACT:
The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In the process of the invention, a lithium salt selected from lithium chloride, lithium sulfate, and combinations thereof is reacted with NaX or KX in a aqueous, semiaqueous, or organic solution and the precipitated salts are removed to obtain the LiX solution of desired purity. Preferably, a semiaqueous solution containing water and an organic solvent is used at some point in the reaction. The process of the invention eliminates the use of highly acidic materials and thus reduces the cost of raw materials and the need for specialized equipment.

REFERENCES:
patent: 3278260 (1966-10-01), Hermann
patent: 3306700 (1967-02-01), Neipert et al.
patent: 3523751 (1970-08-01), Burkert et al.
patent: 4003853 (1977-01-01), Cherubim et al.
patent: 4116856 (1978-09-01), Lee et al.
patent: 4116858 (1978-09-01), Lee et al.
patent: 4159311 (1979-06-01), Lee et al.
patent: 4216192 (1980-08-01), Rao et al.
patent: 4221767 (1980-09-01), Lee et al.
patent: 4274834 (1981-06-01), Brown et al.
patent: 4291001 (1981-09-01), Repsher et al.
patent: 4347327 (1982-08-01), Lee et al.
patent: 4348295 (1982-09-01), Burba, III
patent: 4348296 (1982-09-01), Bauman et al.
patent: 4348297 (1982-09-01), Bauman et al.
patent: 4376100 (1983-03-01), Lee et al.
patent: 4381349 (1983-04-01), Lee et al.
patent: 4430311 (1984-02-01), Lee et al.
patent: 4461714 (1984-07-01), Burba, III
patent: 4472362 (1984-09-01), Burba, III
patent: 4477367 (1984-10-01), Burba, III
patent: 4540509 (1985-09-01), Burba, III
patent: 4723962 (1988-02-01), Mehta
patent: 4859343 (1989-08-01), Frianeza -Kullberg et al.
patent: 4980136 (1990-12-01), Brown et al.
patent: 5378445 (1995-01-01), Salmon et al.
patent: 5389349 (1995-02-01), Bauman et al.
patent: 5599516 (1997-02-01), Bauman et al.
PCT International Search Report, PCT/US 97/16811, completed Jan. 13, 1998 by W. Van der Poel.
Structure of Operation of Dow's New Lithium-Selective Ion-Exchange Resin,W. Bauman et al., John Wiley & Sons, 1985, pp. 29-34.
Gmelins Handbuch Der Anorganischen Chemie, Lithium Erganzungsband,1960, Verlag Chemie, Weinheim, DE, p. 262.
R. T. Sanderson, Principles of Chemistry, pp. 389-398, Mar. 1964.
Morton, Laboratory Technique in Organic Chemistry, pp. 195-197, 1938.
Perrin, Purification of Laboratory Chemicals, Second Edition, pp. 1 and 46-47, 1980.

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