酸化チタンおよびチタンスラグの炭素還元に関する研究

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タイトル別名
  • A Study of the Carbon Reduction of TiO<SUB>2</SUB> or Ti-slags
  • サンカ チタン オヨビ チタン スラグ ノ タンソ カンゲン ニ カンスル ケンキュウ

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The present study was carried out at a high temperature range of 1200°C to 1800°C under a very low CO pressure of about 10−2 mmHg, and further investigation of reduction on the reaction products was made in a molten state using the carbon arc under a low pressure of CO. It was found that the reduction products obtained by the solid reaction concerning TiO2 were of a solid solution of the crystal structure of the NaCl type. The carbon and oxygen contents varied with a relation of (O)·(C)\fallingdotseqconstant depending on the variation of the amount of carbon added. They were decreased by the carbon-arc reduction in the molten state under the lower CO pressure, and the sum (O)+(C) was about 7.7% by repeating the arc reduction several times. The oxygen content in the crude Ti thus obtained was greatly decreased by the addition of Si metal or Ca-Si alloy. Experiments of the carbon reduction of Ti-slags, containing various kinds of impurities, were performed above 1500°C in vaccum and then their products were melted by the carbon arc under the low pressure of CO. Impurities such as Si, Mn, Fe and Al in the crude Ti obtained by the above method were decreased to a degree of traces for Si, Mn and Fe and below 0.2% for Al.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (4), 214-222, 1964

    公益社団法人 日本金属学会

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