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. 12, 2010
Filed:
Dec. 27, 2006
Marko Lahtinen, Espoo, FI;
Mikko Ruonala, Kirkkonummi, FI;
Kurt Svens, Espoo, FI;
Stig-göran Huldén, Turku, FI;
Sigmund Fugleberg, Turku, FI;
Marko Lahtinen, Espoo, FI;
Mikko Ruonala, Kirkkonummi, FI;
Kurt Svens, Espoo, FI;
Stig-Göran Huldén, Turku, FI;
Sigmund Fugleberg, Turku, FI;
Outotec Oyj, Espoo, FI;
Abstract
Sulphidic zinc concentrate usually also includes small amounts of rare metals such as indium and gallium. If the content of these metals in the raw material is sufficiently high, their recovery may be economically worthwhile. In the method according to the invention the recovery of indium and other desirable rare metals takes place in a zinc leaching process, in which at least part of the sulphidic concentrate is leached directly without roasting.