Process for the oxidation of Ti3+ to Ti4+ during titanium dioxide preparation according to the sulphate process

摘要

described is a method for the production of titanium dioxide by the sulfatverfahren, a titanhaltiger raw material with sulphuric acid sensitive, the obtained aufschlusskuchen with water and / or dilute sulphuric acid is dissolved and a lu00f6sungszeit of 2 to 10 hours aufschlusslu00f6sung received a wasserstoffperoxidlu00f6sung is treatedalthough the dissolved 113. + ti4 + oxidized.