Method for recovering titanium component and method for producing titanium oxide

摘要

Problem to be solved: to recover titanium component from the drainage containing titanium compound or to use titanium oxide as the neutralization agent in the method of producing titanium oxide Problem to be solved: to provide a recovered titanium component or a method of recovering a titanium component having a low calcium content in titanium oxide or a method of producing titanium oxide.A method of recovering titanium components from drainage containing titanium compoundsThe drainage containing the titanium compound is brought into contact with waterThe process of hydrolyzing titanium compounds (1) andSolution to the treatment solution of the hydrolysis treated with hydrolysisPrimary neutralization treatment is carried out to add calcium hydroxide or calcium oxide as neutralization agent so that the pH becomes less than 1.5 and less thanThenTo the treatment liquid subjected to the primary neutralization treatmentSecondary neutralization treatment is carried out to add calcium hydroxide or calcium oxide as neutralization agent so that the pH becomes 2.5 or moreGetting titanium hydroxide (2) andHavingA method of recovering titanium components.Diagram