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:
Nov. 10, 2009
Filed:
Mar. 08, 2002
Applicants:
Sigmund Fugleberg, Eerikinkatu, FI;
Pertti Pekkala, Vehaksentie, FI;
Panu Talonen, Ketotie, FI;
Marja Riekkola-vanhanen, Orapihlajantie, FI;
Inventors:
Sigmund Fugleberg, Eerikinkatu, FI;
Pertti Pekkala, Vehaksentie, FI;
Panu Talonen, Ketotie, FI;
Marja Riekkola-Vanhanen, Orapihlajantie, FI;
Assignee:
Outotec Oyj, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is precipitated as silica.