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:
Oct. 16, 2012
Filed:
Aug. 22, 2007
Jérôme Agin, Paris, FR;
Yves Le Quesne, Rambouillet, FR;
Bertrand Berthomieu, Rambouillet, FR;
Eramet, Paris, FR;
Abstract
Process for the treatment of a lateritic nickel/cobalt ore consisting of a mixture () of limonite and saprolite, characterized in that: the mixture () in the presence of an iron-precipitating agent is made into a pulp (), having a solids content of between 10 and 40% by weight; the pulp undergoes a leaching operation () with sulphuric acid (), at a temperature between 70° C. and the boiling point and at atmospheric pressure; and a solid-liquid separation () is carried out so as to obtain an iron-containing solid residue () and a solution containing nickel and cobalt ions. Process for producing nickel and/or cobalt intermediate concentrates or commercial products using the above process.