高チタン鑛滓に關する研究

概要

論文の詳細を見る
In recent few years the production of high titanium slags has become a major industrial operation ; but, in general, it is difficult to extract titanium dioxide from such slags. The object of this investigation is to determine the factors that affect the efficiency of extraction from slag containing up to 70% titanium dioxide with sulphuric acid. The results are summarized as follows : (1) Anatase is easily dissolved in sulphuric acid, but not rutile. (2) The anatase-rutile transformation is irreversible. (3) In a reduced state much TiO_2 is dissolved in (Mg・Fe)O・2TiO_2,but the solid solubility decreases rapidly with oxidation, while rutile precipitates at high temperature, and anatase at low temperature, so it is very important to prevent high temperature oxidation to get a fair yield. (4) Rapid quenching is also effective with slags containing 60 to 75% TiO_2. (5) The addition of magnesium oxide is most effective.
東北大学の論文
1954-09-30