C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/295, 53/375
C07D 213/78 (2006.01) C07D 213/79 (2006.01) C07D 213/80 (2006.01) C07D 213/81 (2006.01) C07D 213/82 (2006.01) C22B 3/36 (2006.01) C22B 9/02 (2006.01)
Patent
CA 1193265
ABSTRACT Metal values are extracted from aqueous solutions of metal salts containing halide or pseudo halide ions by pyridine derivatives containing the substituent -(COX)A where X is the group -OR1 or -NR2R3 and n is 1, 2 or 3. R1 is a hydrocarbyl group containing from 5 to 36 carbon atoms and R2 and R3 are hydrogen or a hydrocarbyl group wherein R2 and R3 together contain from 5 to 36 carbon atoms. The process is especially useful for the recovery of metals from leach solutions derived from sulphur-containing ores such as chalcopyrite.
395390
Dalton Raymond F.
Price Raymond
Quan Peter M.
Stewart David
Avecia Limited
Ballantyne Donald G.
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