Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal
Reexamination Certificate
2007-03-26
2009-02-24
Bos, Steven (Department: 1793)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ivb metal
C423S082000, C423S084000
Reexamination Certificate
active
07494631
ABSTRACT:
This invention relates to a process for beneficiating a titaniferous ore. The process comprises calcining the titaniferous ore, at least one alkali or alkaline earth metal salt, and at least one alumina-containing material in the presence of oxygen to form a calcined ore mixture, then leaching the calcined ore mixture with a solution comprising ammonium, sodium or magnesium chloride in the presence of oxygen to form a leached ore mixture, and contacting the leached ore with an acid to form a beneficiated ore.
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Jha Animesh
Kumari Ephraim Jeya
Lahiri Abhishek
Bos Steven
Dunlap Codding P.C.
Millennium Inorganic Chemicals
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