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:
Feb. 03, 2009
Filed:
Oct. 17, 2003
Applicants:
Eric Girvan Roche, Buoragul, AU;
Alan David Stuart, New Lambton, AU;
Philip Ernest Grazier, Kilaben Bay, AU;
Inventors:
Eric Girvan Roche, Buoragul, AU;
Alan David Stuart, New Lambton, AU;
Philip Ernest Grazier, Kilaben Bay, AU;
Assignee:
BHP Billiton Innovation Pty. Ltd., Melbourne, VIC, AU;
Primary Examiner:
Int. Cl.
CPC ...
C22B 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sulfate process for producing titania from a titaniferous material is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, separating titanyl sulfate from leach liquor, hydrolysis of the extracted titanyl sulfate, and thereafter calcining the solid phase produced in the hydrolysis step. The process is characterized by multiple stage leaching of the titaniferous material.