Process for separating and purifying metals of the platinum...

Details Process for separating and purifying metals of the platinum... Process for separating and purifying metals of the platinum...

C - Chemistry, Metallurgy

22

B

53/168

C22B 3/34 (2006.01) C01G 55/00 (2006.01)

Patent

CA 1230977

ABSTRACT OF THE DISCLOSURE A process for separating and purifying metals of the platinum group from base metals in aqueous acid solutions is described. For this purpose a substituted thiourea having the general formula R1R2N-CS-NH-COR3 or R1R2N-CS-NH-COOR3 is used as the extracting agent. N,N-dialkyl-N' benzoyl thioureas, wherein R1 and R2 represent methyl, n-butyl or n-hexyl groups are preferably used.

466958

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