Process for the recovery of lead, silver and gold from the...

Details Process for the recovery of lead, silver and gold from the... Process for the recovery of lead, silver and gold from the...

C - Chemistry, Metallurgy

22

B

361/3, 53/368

C22B 11/00 (2006.01) B03B 9/00 (2006.01) B03D 1/02 (2006.01)

Patent

CA 1181245

ABSTRACT OF THE DISCLOSURE A process is disclosed for the recovery of lead, silver and gold from the iron-bearing residue of an electrolytic zinc process by froth-flotating a slurry of the iron-bearing residue in the presence of a sulfidic collector agent in order to froth-flotate the sulfides and to separate them from the iron-bearing residue. The iron-bearing residue is sulfidized selectively in order to convert the lead, silver and possibly gold substantially quanti- tatively to sulfides before the iron-bearing residue is froth- flotated.

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