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:
Mar. 30, 2010
Filed:
Oct. 20, 2002
Raymond W. Shaw, New Gisborne, AU;
Lucy Esdaile, Carlton, AU;
Andrea R. Gerson, Mawson Lakes, AU;
Joan E. Thomas, Williamsburg, VA (US);
Sarah L. Harmer, Mawson Lakes, AU;
Raymond W. Shaw, New Gisborne, AU;
Lucy Esdaile, Carlton, AU;
Andrea R. Gerson, Mawson Lakes, AU;
Joan E. Thomas, Williamsburg, VA (US);
Sarah L. Harmer, Mawson Lakes, AU;
Technological Resources PTY Limited, Melbourne, AU;
Abstract
A process for recovering copper from chalcopyrite is disclosed. The process includes oxidising sulphur in chalcopyrite with a solution under predetermined contact conditions and thereby releasing at least part of the copper in the chalcopyrite into the solution as copper ions. The process includes a subsequent step of reducing sulphur in a solid product from step (a) to a minus two, ie. sulphide, valence state with a solution under predetermined contact conditions. The process further includes a subsequent step of oxidising sulphur in a solid product from step (b) with a solution under predetermined contact conditions and thereby releasing at least part of the remaining copper in the solid product into the solution as copper ions. The process further includes recovering copper from one or more of the solutions from steps (a) and (c).