Process for recovering titanium dioxide

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal

Reexamination Certificate

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C423S084000, C423S085000, C423S021100

Reexamination Certificate

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07964164

ABSTRACT:
An improved process for recovering a titanium dioxide product from a titanium oxide-containing roasted mass of the type derived from roasting an ilmenite, anatase or perovskite ore by exploiting an organic acid, such as mixture of oxalic acid and ascorbic acid.

REFERENCES:
patent: 1911396 (1933-05-01), Saklatwalla et al.
patent: 5011666 (1991-04-01), Chao et al.
patent: 7494631 (2009-02-01), Jha et al.
patent: 7771679 (2010-08-01), Jha et al.
patent: 2008/0241026 (2008-10-01), Jha et al.
patent: 91/17956 (1991-11-01), None
patent: WO 91/17956 (1991-11-01), None
patent: 2005/028369 (2005-03-01), None
patent: WO 2005/028369 (2005-03-01), None
patent: WO 2008/118527 (2008-10-01), None
patent: PCT/GB2009/051209 (2009-11-01), None
Banwart et al., “The Role of Oxalate in Accelerating the Reductive Dissolution of Hematite (x-Fe2O3) by Ascorbate”, Colloids and Surfaces, 39, Elsevier Science Publishers B.V., 1989, pp. 303-309.
Suter et al., “Dissolution of Hydrous Iron(III) Oxides by Reductive Mechanisms”, Langmuir, Institute for Aquatic and Water Pollution Control (EAWAG), 1991, pp. 809-813.
Sibum et al., Chapter 22—“Titanium” from “Handbook of Extractive Metallurgy”, Wiley-VCH, 1997, pp. 1129-1180.
Panias D et al: “Dissolution of hematite in acidic oxalate solutions: the effect of ferrous ions addition” Hydrometallurgy, Nov. 1, 1996, pp. 219-230, vol. 43, No. 1, Elsevier Science Publishers B.V., Amsterdam, NL.

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