反応媒体塩を利用した新しいチタンの製造方法

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タイトル別名
  • New Titanium Production Process with Molten Salt Mediator
  • ハンノウ バイタイエン オ リヨウ シタ アタラシイ チタン ノ セイゾウ ホウホウ

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Metallic titanium has been produced by the Kroll process, in which titanium chloride is reduced by metallic magnesium. Although this process is a competent method to obtain high purity titanium, it is difficult to expect further improvement of productivity and also to recover excess heat evolved during the reaction. This is mainly because the product titanium by this reduction process is solid in sponge form, and difficult to recover continuously, and the process, has to be a batch type process. For developing a high speed continuous reduction process, various aspects were analyzed from the industrial point of view, and in this investigation, an attempt was made to produce titanium powder by utilizing a molten reaction media. It was already confirmed by preliminary laboratory-scale experiments that the titanium fine powder can be produced by injecting titanium tetrachloride into the reaction media, which is synthesized by indefinite mixture of molten magnesium chloride and liquid magnesium metal reductant. In this investigation, a bench scale reaction apparatus was newly constructed with the scope of scale up of the reduction process. Although the obtained titanium powder is contaminated by iron and oxygen, fine powder with 99% purity was successfully produced. Sintering examination of the power showed possibility for application to powder metallurgy.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 65 (8), 659-667, 2001

    公益社団法人 日本金属学会

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