HIGH-GRADE METHOD OF ILMENITE ORE, MANUFACTURING METHOD OF HIGH-GRADE TIO2 USING THE SAID METHOD AND HIGH-GRADE TIO2 PRODUCED BY THE SAID MANUFACTURING METHOD, FOR TI-RAW MATERIALS

摘要

A method for upgrading an ilmenite ore for yielding a high-TiO₂-content titanium source by separating and removing an iron component from ilmenite (FeTiO₃), which includes an oxidation step of oxidizing a starting ilmenite; after the oxidation step, a reduction step of reducing the treated ilmenite; and after the reduction step, an extraction step of dissolving the iron component with an acid, to thereby remove the iron component. Also disclosed is a production method for producing a high-TiO₂-content titanium source, which includes upgrading an ilmenite ore as described above, and a high-TiO₂-content titanium source produced through the production method.