Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal
Reexamination Certificate
2005-10-18
2009-12-01
Bos, Steven (Department: 1793)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ivb metal
C423S082000
Reexamination Certificate
active
07625536
ABSTRACT:
This invention relates to a process for beneficiating a titaniferous ore. The process comprises leaching the titaniferous ore with sulfuric acid to form a leached ore, calcining the leached ore in the presence of oxygen to form a calcined ore, and leaching the calcined ore with sulfuric acid, hydrochloric acid, and/or nitric acid to form a beneficiated ore. The leached ore is not reduced prior to or following calcination.
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PCT Search Report dated Jun. 15, 2007.
de Castro Sheldon Andrea
Smith, Jr. Earl M.
Bos Steven
Dunlap Codding P.C.
Millennium Inorganic Chemicals, Inc.
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