C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/10 (2006.01) C22B 3/04 (2006.01)
Patent
CA 2478516
A process for leaching a value metal from a base metal sulfide ore, comprising the step of leaching the ore with a lixiviant comprising a chloride, an oxidant and hydrochloric acid is disclosed. The leaching is controlled, by use of low concentrations of hydrochloric acid and a redox potential, to effect formation of hydrogen sulfide from the base metal sulfide ore. The hydrogen sulfide is stripped from the leach solution, thereby reducing the amount of sulfate generated in the leach to very low levels. The leaching may also be conducted to limit the co-dissolution of platinum group metals and gold with the base value metals. The leach forms a value metal-rich leachate and a solids residue. The solids residue may be subsequently leached to recover the platinum group metals and gold. The value metal-rich leachate can be oxidized and neutralized to recover the value base metals. In an embodiment, the chloride is magnesium chloride and lixiviant solution is regenerated.
Harris G. Bryn
Lakshmanan Vaikuntam I.
Puvvada George
Sridhar Ramamritham
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Jaguar Nickel Inc.
LandOfFree
A process for the recovery of value metals from base metal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A process for the recovery of value metals from base metal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A process for the recovery of value metals from base metal... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1587385