C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/08 (2006.01) C22B 1/02 (2006.01)
Patent
CA 2245036
A process for the recovery of zinc from a zinc ore. The process comprises leaching material obtained from a zinc ore with dilute sulphuric acid, in which essentially all of the zinc is in the form of zinc oxide. The leachate obtained is separated for recovery of zinc. Preferably, the material is substantially free of zinc ferrite. In preferred embodiments, the material is obtained from an iron-bearing zinc ore, especially zinc sulphide ore or concentrate, that has been subjected to a roasting step at a temperature of greater than 1050°C.
Convey John Raymond
Lakshmanan Vaikuntam Iyer
Laughlin Robert Gardiner Willis
Sridhar Ramamritham
Mortimer Technology Holdings Limited
Ortech Corporation
Scott Christopher R.
LandOfFree
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