Process for the recovery of noble metals from ore- concentrates

Details Process for the recovery of noble metals from ore- concentrates Process for the recovery of noble metals from ore- concentrates

C - Chemistry, Metallurgy

22

B

53/224, 53/226

C22B 3/04 (2006.01) C22B 11/00 (2006.01) C22B 11/08 (2006.01)

Patent

CA 1277143

ABSTRACT The invention relates to the hydrometallurgical recovery of gold and silver by direct oxidizing sulphuric acid-digestion of arsenopyrite-concentrates (FeAsS2) containing carbonaceous materials, with a silicate gangue, and/or a silicate and pyrite gangue, whereby arsenic and iron are fully solubilized and the noble metals are quantitatively enriched in the silicate-residue. The concentrate is subjected to mechano-chemical stress to produce structural deformations before being digested in the presence of oxygen. After decarbonization of the residue gold and silver can be recovered by cyanide leaching without losses due to adsorption. The invention also relates to a bulk process for preparing gold and silver rich concentrates.

518585

Affiliated with

Also associated with

Rating

Process for the recovery of noble metals from ore- concentrates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the recovery of noble metals from ore- concentrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the recovery of noble metals from ore- concentrates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1223080