タンタル熔融塩電解について

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書誌事項

タイトル別名
  • Study on the Production of Tantalum by Electrolysis of Fused Salt
  • タンタルヨウユウエン デンカイ ニ ツイテ

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抄録

A method of preparing pure tantalum metal by electrolysis of Ta205 dissolved in K2TaF7 in the presence of other alkali halides has been worked out. Graphite crucibles capable of holding 80g of fused salts in small scale experiments and 800g in large scale one have been served as the anode, and the tantalum has been deposited upon tungsten cathode suspended in the center of the crucible (Fig. 1).<BR>In order to obtain the optimum conditions of the preparation of tantalum metal powders by electrolysis of fused salts, bath composition, current density and electrolysis temperature heve been investigated as the factors having influence upon current efficiency, bath voltage, particle size and electrodepositing state.<BR>Optimum conditions of electrolysis have been found as follows;<BR>Eledrolysis temperoture 750 to 850°C<BR>Current density at the cathode 50 to 100 A/dm2 Cohcehtration ot K2TaF7 to carrier salts 15 to 25 per cent by welght K2TaF7/Ta2 O5 ratio 2/1 to 1/1by weight<BR>KCl/KF ratio 3/1 to 5/3 by welght

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 77 (871), 49-55, 1961

    一般社団法人 資源・素材学会

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