Process for re-extracting metal from an organic extraction...

Details Process for re-extracting metal from an organic extraction... Process for re-extracting metal from an organic extraction...

C - Chemistry, Metallurgy

22

B

53/375

C22B 3/00 (2006.01) B01J 14/00 (2006.01) C22B 3/26 (2006.01) C22B 3/44 (2006.01)

Patent

CA 1122419

Inventors: HANS REINHARDT ULF VILHELM KUYLENSTIERNA Titel: A PROCESS FOR RE-EXTRACTING METAL FROM AN ORGANIC EXTRACTION SOLUTION IN WHICH THE METAL IS PRESENT AS A METAL CHLORIDE COMPLEX. Abstract: The invention relates to the re- extraction of a metal from an organic extraction solution in which the metal is present as a metal chloride complex bonded to an extractant. The organic extraction solution is con- tacted with an aqueous solution, to transfer metal ions and chloride ions to the aqueous solution. Sulphuric acid is added to the aqueous solution, wich is subsequently heated to drive off hydrogen chloride and water. Metal sulphate is removed from the acidified aqueous solution. - 1 -

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