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:
Apr. 28, 2015
Filed:
Nov. 24, 2011
Applicants:
David Steyn Van Vuuren, Pretoria, ZA;
Jaco Johannes Swanepoel, Pretoria, ZA;
Inventors:
David Steyn Van Vuuren, Pretoria, ZA;
Jaco Johannes Swanepoel, Pretoria, ZA;
Assignee:
CSIR, Pretoria, ZA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 34/00 (2006.01); C22B 34/12 (2006.01);
U.S. Cl.
CPC ...
C22B 34/1259 (2013.01); C22B 34/12 (2013.01); C22B 34/1245 (2013.01);
Abstract
A method of upgrading a titaniferous material includes nitriding and reducing a titaniferous material which includes TiOand Fe oxides in the presence of nitrogen and carbon to convert the TiOto TiN and to reduce most of the Fe oxides to Fe. The Fe is oxidized in preference to the TiN to form Feions, whereafter the Feions are removed to produce an upgraded low-Fe TiN bearing material.