Studies on the Electrolytic Reduction of TiO<SUB>2</SUB> and Ti-Slag

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  • Takeuchi Sakae
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Watanabe Osamu
    The Research Institute for Iron, Steel and Other Metals, Tohoku University

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  • 酸化チタンおよびチタンスラグの電解還元に関する研究
  • サンカ チタン オヨビ チタン スラグ ノ デンカイ カンゲン ニ カンスル ケンキュウ

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Abstract

The electrolytic reduction has been made mainly on CaCl2-CaO-TiO2 (or Ti-slag) electrolyte solution in the temperature range of 950°∼1250°C, below 2.5 volt and under inert gas atomosphere.<BR>By the reduction in the electrolysis of TiO2, the deposited metal contained 1∼2% carbon and oxygen respectively, and their metals has the V.H.N. 250∼350 on the arc melt button ingot.<BR>Using the diaphragm which has been made of CaTiO3, contents of carbon in the deposited metal were decreased to less than 0.5%. In the electrolysis of Ti-slag, the impurities such as Mn, Si, Al and Fe are incidentally contained in the deposited titanium, and their contents depend on the form of their oxides and their solubilities to the bath.

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