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:
May. 15, 2012
Filed:
Apr. 29, 2010
Peter T. Halpin, Great Falls, VA (US);
Ulrich R. Schlegel, Washington, DC (US);
Dale L. Schneck, Pottsville, PA (US);
Peter T. Halpin, Great Falls, VA (US);
Ulrich R. Schlegel, Washington, DC (US);
Dale L. Schneck, Pottsville, PA (US);
World Resources Company, McLean, VA (US);
Abstract
A method for selectively recovering a metal from mined ore and other metal-bearing raw source materials is disclosed. The method involves mixing with an aqueous medium a metal-bearing ore and/or other raw source material containing a first metal in an insoluble form, insoluble and/or soluble Cr in a Cr bearing material as a second metal, and organic and inorganic compounds to obtain a slurry containing the first metal in an insoluble form, insoluble and/or soluble Cr compound(s), and the organic and inorganic compounds; adjusting the pH of the slurry to an optimal range for Cr oxidation to convert Cr to an insoluble form; optionally adding a first oxidizer to the slurry to oxidize organic and inorganic compounds; selectively leaching the Cr by adding a leaching agent in an amount sufficient to obtain Cr in a soluble form while the first metal remains in the slurry in an insoluble form; filtering the slurry to obtain a filter cake containing the first metal in an insoluble form and a filtrate containing Cr in a soluble form; and recovering the filter cake containing the first metal in an insoluble form and/or filtrate containing Cr in a soluble form.