Richard J Williams
General Contractor in Elko, NV
License number
Utah 7270608-E100
Issued Date
Feb 17, 2009
Category
Contractor
Type
E100 - General Engineering Qualifier
Address
Address
Elko, NV
Professional information
Gold Recovery Using Controlled Oxygen Distribution Pressure Oxidation
US Patent:
5489326, Feb 6, 1996
Filed:
Oct 4, 1994
Appl. No.:
8/317475
Inventors:
Kenneth G. Thomas - Mississauga, CA
Herman J. H. Pieterse - Elko NV
Richard A. Williams - Elko NV
Andrew W. Bolland - Elko NV
Herman J. H. Pieterse - Elko NV
Richard A. Williams - Elko NV
Andrew W. Bolland - Elko NV
Assignee:
Barrick Gold Corporation - Toronto
International Classification:
C22B 304
US Classification:
75744
Abstract:
A process for recovering gold from a refractory auriferous ore containing sulfide sulfur. An aqueous slurry of refractory auriferous ore is subjected to pressure oxidation in an autoclave while the distribution of oxygen to the various compartments of the autoclave is controlled in order to achieve increased oxygen utilization.