Process for the extraction of metal values and novel metal extractants
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0057797A2
公开(公告)日:1982-08-18
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-OR, or -NR2R3 and n is 1,2 or 3. R, 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.