TiO2 compounds obtained from a high silica content ore
AssigneeMillenium Inorganic Chemicals, Inc.
InventorsLing Zhou, Thomas Messer, Fu-Chu Wen, Mark Banash
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Abstract
A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO2 compounds, as well as methods for using them have been developed. These TiO2 compounds may be used directly in applications such as paper, plastics and paints without being subjected to the chloride or sulfate processes. Also they made be used as a feedstock for the chloride or sulfate processes. In order to obtain these TiO2 compounds, one may grind or pulverize the naturally occurring ore, disperse it in a solution or suspension, and process it by selective flocculation or aqueous biphasic extraction.
Claims18
A process for obtaining TiO2 compounds from an ore, said process comprising:
- a. grinding an ore to form ground ore having particles of a size suitable to form an aqueous slurry, wherein said ore comprises at least 95% silica and titania, and either no iron or iron in an amount less than 0.5%;
- b. combining the ground ore, water and a separating agent so as to form an aqueous slurry of constituents;
- and
- c. separating the constituents of the aqueous slurry to isolate the TiO2 compounds,
- wherein during said process the titania is not subjected to a chemical conversion step and said TiO2 compounds comprise at least 50% TiO2.
Dependencies are inferred from the claim text.