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:
Sep. 30, 2003
Filed:
Jun. 28, 2001
Applicant:
Inventors:
Ross Alexander McClelland, Maryknoll, AU;
Michael John Hollitt, Box Hill North, AU;
Assignee:
Technological Resources PTY LTD, Melbourne, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 3/300 ; C01G 2/300 ; C01F 7/00 ;
U.S. Cl.
CPC ...
C01B 3/300 ; C01G 2/300 ; C01F 7/00 ;
Abstract
A process for upgrading of titaniferous material containing silica, including pretreating the titaniferous material by alkaline leaching to precipitate the silica as an aluminosilicate which is amenable to further leaching. Subsequently, the pretreated titaniferous material is leached under acid conditions, causing the silica to enter solution under conditions such that the silica is not hydrolysed or precipitated as a silicate.