| abstract |
A method for recovering titanium from a sulfuric acid solution containing chiefly titanium and iron, comprises adding NaCl or the like to the sulfuric acid solution and contacting the resultant solution with a specified organic solvent to extract iron from the aqueous solution into the organic solvent as chloride complex, contacting the residual aqueous solution with another specified organic solvent to extract titanium from the aqueous solution into that organic solvent as chloride complex, contacting the resultant organic solution with an aqueous solution containing NH₄⁺ or K⁺ together with HF to inversely extract titanium ions therein, and then adding NH₃ gas, NH₄OH or KOH to the aqueous solution to form a precipitate such as (NH₄)₂TiF₆ or titanium hydroxide. Titanium halides and alkoxides may be produced from the precipitate. |