C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
53/291, 260/315.
C07D 231/48 (2006.01) C01G 3/00 (2006.01) C07D 231/22 (2006.01) C07D 231/26 (2006.01) C22B 3/36 (2006.01) C22B 15/00 (2006.01)
Patent
CA 1226581
Abstract of the disclosure The present invention relates to a process for the selective extraction of copper of the liquid/liquid type from an aqueous sulphuric acid solution acting on the mineral or from solution of a concentrated semi-finished product characterised by using at least one extractant having the following general formula: Image wherein R1 represents phenyl group, possibly substituted by one or several alkyl groups, each containing 1-12 carbon atoms, R2 represents an alkyl group, branched or straight-chain containing 1-12 carbon atoms or a phenyl group, possibly substituted by one or several alkyl groups, each containing 1-12 carbon atoms, R3 represents H, (2-phenyl-5-alkyl-(3H)-pyrazolyl-3 -one) carbonyl-4 or a (2-phenyl-5-phenyl-(3H)-pyrazolyl-3-one) carbonyl-4 to form a bis acylpyrazolone the phenyl groups being possibly substituted by one or several alkyl groups, each containing 1-12 carbon atoms, R4 and R5 are different and represent an oxygen or a hydroxy group, Z represents a straight-chain or branched, saturated or unsaturated alkylene group containing 1-21 carbon atoms, and each of the dotted lines may stand for a double bond, in solution in an organic solvent characterised in that it is practically insoluble in water, it is not disturbing the complexing action of the extraction agent and it has 3 high flash point. The process can be used for the upgrading of minerals.
452337
Chevalier Sammy
Gautier Jean-Claude
Lecolier Serge
Soriaux Claude
Goudreau Gage Dubuc
Societe Nationale Des Poudres Et Explosifs
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