The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2008
Filed:
Dec. 16, 2002
Applicants:
Mohamed Buarzaiga, Sudbury, CA;
Debbie Marshall, Kingston, CA;
Marc Boissoneault, Hanmer, CA;
Maxine Hoffman, Garson, CA;
Carlton A. Potter, Garson, CA;
Inventors:
Mohamed Buarzaiga, Sudbury, CA;
Debbie Marshall, Kingston, CA;
Marc Boissoneault, Hanmer, CA;
Maxine Hoffman, Garson, CA;
Carlton A. Potter, Garson, CA;
Assignee:
Falconbridge Limited, Toronto, Ontario, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is provided for the removal of chromium from leach liquors produced during high pressure leaching of laterite ores in an autoclave, by addition to the autoclave of carbon in a quantity of about 0.5%-1% by weight with reference to the total dry feed.