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. 31, 2009
Filed:
Jul. 14, 2004
Seppo Heimala, Pori, FI;
Mikko Ruonala, Pori, FI;
Seppo Heimala, Pori, FI;
Mikko Ruonala, Pori, FI;
Outotec OYJ, Espoo, FI;
Abstract
The invention relates to a method for processing concentrates, particularly concentrates produced from copper sulfide-based ores. According to the method, the concentrate () to be processed, obtained from ore concentration, is divided into two parts, to a concentrate () mainly containing poorly soluble components, and to a concentrate () mainly containing well soluble components. The concentrate () containing well soluble components is conducted to a leaching step (), and the solution () obtained from said leaching step is conducted to at least one conversion step (), and to the conversion step () that is located first in the flowing direction, there is fed the concentrate () containing poorly soluble components. In the conversion step () that is located first in the flowing direction, at least the copper contained in the solution is converted into sulfidic form by means of the sulfide-form iron of the concentrate () containing poorly soluble components, and at least part of the solution () obtained from the conversion step () is returned to the leaching step ().