<報文>タンタル熔融塩電解に関する基礎的研究(第1報) : 電解浴について

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  • タンタルヨウユウエン デンカイ ニ カンスル キソテキ ケンキュウ 1
  • <Original Papers>Studies on the Production of Tantalum by Electrolysis of Fused Salt. (I) : On the Electrolytic Bath

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Tantalum is produced by the electrolysis of the fused salt containing tantalum oxide, potassium tantalum fluoride, and alkali halide such as KF, KCl. The equilibrium diagrams were made by thermal analysis. In the KF-K_2TaF_7 system, the double fluoride KF-K_2TaF_7 was formed and the system was divided into two eutectics, KF-KF・K_2TaF_7 and KF・K_2TaF_7-K_2TaF_7. The former eutectic point lay at 22mol% K_2TaF_7,718℃ and the latter at 71mol%, 697℃. In the KCl-K_2TaF_7 system, the double salt KCl・K_2TaF_7 was formed and the system was divided into two eutectics, KCl-KCl・K_2TaF_7 and KCl・K_2TaF_7-K_2TaF_7. The former eutectic point lay at 20mol% K_2TaF_7,696℃ and the latter at 80mol%, 697℃.

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