C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/74
C25C 1/16 (2006.01)
Patent
CA 1179966
ABSTRACT A process for treating zinc sulphide materials wherein the sub-divided material is firstly leached, under pressure at less than 119C, with a sulphate leach solution low in sulphuric acid and having a high iron content together with zinc and impurities in a manner causing iron to precipitate and subsequently leaching the residue and redissolving the iron precipitate with spent electrolyte containing regenerated sulphuric acid resulting from the treatment of the leach liquor obtained from the first leach step and wherein the leach solution from the subsequent leach step constitutes the starting leach solution for the first leach step. The second leach step is carried out in two stages; a first leach stage conducted at elevated pressure and elevated temperature (less than 119C) in the presence of oxygen and a second stage at atmospheric pressure and without the supply of free oxygen to the leach solution.
382867
Kirby Eades Gale Baker
National Institute For Metallurgy
LandOfFree
Leaching of zinc containing sulphide minerals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leaching of zinc containing sulphide minerals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leaching of zinc containing sulphide minerals will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1245322