C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
403/2, 53/273
C08K 3/22 (2006.01) C08L 101/00 (2006.01) C22B 26/12 (2006.01)
Patent
CA 1137249
Abstract of the Disclosure The invention relates to a particulate anion exchange resin having microcrystalline LiX-2Al(OH)3 suspended therein, where X equals halogen, and a process for making it. The process comprises (a) heating an halolithium/lithiumcomplex-containing resin at a temperature and for au time sufficient to convert the complex to the microcrystalline structure having the formula LiX-2Al(OH)3, said complex-containing rosin being a particulate, anion exchange resin having suspended therein the halolithium/lithium aluminate complex, or (b) providing a particulate anion exchange rosin substantially in neutral or basic form having suspended therein hydrous alumina conforming to the formula Al(OH)3; reacting said Al(OH)3 with aqueous LiOH at a temperature and for a period of time sufficient to form microcrystalline LiOH-2Al(OH)3 suspended in said resin; and reacting theso-formed LiOH-2Al(OH)3 with a halogen acid or halide salt to convert it to saidLiX-2Al(OH)3. The resin is useful in removing or recovering lithium values fromore or brine containing lithium salts along with salts of other metals, e.g. ND, Ca, Mg, X, and/or B.
383766
Bauman William C.
Lee John M.
Smart & Biggar
The Dow Chemical Company
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