Cobalt recovery method

Details Cobalt recovery method Cobalt recovery method

C - Chemistry, Metallurgy

22

B

53/308

C22B 3/38 (2006.01) C01G 51/00 (2006.01) C22B 3/32 (2006.01)

Patent

CA 1279197

ABSTRACT OF THE DISCLOSURE A coblat recovery method comprising a step of selectively shifting cobalt ion into an extraction agent mainly composed of either 2-ethyl hexylphosphonate mono- 2-ethyl hexylester or di-2 ethyl hexylphosphate in order to extract and separate cobalt from a solution containing cobalt salts, a step of stripping cobalt into an aqueous solution of oxalic acid by bringing the extraction agent containing cobalt into contact with the aqueous solution of oxalic acid after the separation from nickel ion, sodium salt, calcium salt, etc., and a step of recovering cobalt oxalate which does not con- tain any other salt.

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