Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jose Alberto Gonzalez Dominguez0
Juris R. Harlamovs0
Andrew W. Stradling0
Daniel W. Ashman0
Dilipkumar D. Makwana0
Hector M. Lizama0
Date of Patent
November 25, 2008
0Patent Application Number
104833340
Date Filed
July 10, 2002
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap. An integrated process which comprises subjecting the pregnant leach solution to neutralization and solvent extraction to produce a concentrated zinc solution is also provided. Zinc may be recovered from the concentrated solution by means of electrowinning, either in the absence or presence of manganese. Alternatively zinc may be recovered in the form of a zinc compound.
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