Title:
UPGRADING ILMENITE FOR TITANIA PRODUCTION
Document Type and Number:
WIPO Patent Application WO2002087770
Kind Code:
A8
Abstract:
The present invention provides a process for upgrading a primary ilmenite containing gangue mineral grains for forming titania pigment by the sulfate method, the process including the step of: roasting a primary ilmenite containing gangue mineral grains at a temperature of less than 650 DEG C under conditions that promote the formation of a magnetically separable product rich in titania and in which the rutile present is in a form that is at least partially soluble in concentrated sulfuric acid.The process will typically involve the step of: subjecting the roasted ilmenite concentrate containing gangue to magnetic separation to reduce the content of gangue mineral grains and provide a product rich in ilmenite and containing rutile.
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Inventors:
GREY IAN EDWARD (AU)
Application Number:
PCT/AU2002/000538
Publication Date:
December 27, 2002
Filing Date:
May 01, 2002
Export Citation:
Assignee:
COMMW SCIENT IND RES ORG (AU)
GREY IAN EDWARD (AU)
GREY IAN EDWARD (AU)
International Classes:
B03C1/00; (IPC1-7): B03C1/015; C01G23/047; C09C1/36
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