C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/46 (2006.01) B03D 1/00 (2006.01) C22B 3/02 (2006.01) C22B 3/08 (2006.01) C22B 3/20 (2006.01) C22B 15/00 (2006.01) C22B 17/00 (2006.01)
Patent
CA 2506780
The present invention relates to an apparatus and a process for producing zinc oxide from an acid soluble zinc-bearing material. The process according to the present invention comprises the steps of leaching the zinc oxide material with sulphuric acid; precipitating copper and cadmium from the leach solution using a base such as calcium oxide; removing copper, cadmium from the leach solution by cementation with zinc dust.
Choi Yeonuk
Finch James Andrew
Giove Anna-Maria
Kim Joo
Payant Serge
Goudreau Gage Dubuc
Noranda Inc.
University Mcgill
LandOfFree
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