Extraction and Separation of Tantalum and Niobium by Liquid-Liquid Extraction in Hydrofluoric Acid-Tributyl Phosphate System
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- Nishimura Sanji
- Department of Metallurgy, Faculty of Engineering, Kyoto University
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- Moriyama Jyoichiro
- Department of Metallurgy, Faculty of Engineering, Kyoto University
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- Kushima Isao
- Department of Metallurgy, Faculty of Engineering, Kyoto University
Bibliographic Information
- Other Title
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- 弗酸-TBP系の液々抽出によるタンタルとニオブの抽出分離について
- フツサン-TBPケイ ノ エキエキ チュウシュツ ニ ヨル タンタル ト ニオブ ノ チュウシュツ ブンリ ニ ツイテ
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Abstract
In this report the liquid-liquid solvent extraction and separation of Ta and Nb by using tributyl phosphate (TBP) as an organic solvent and hydrofluoric acid solution as a aqueous solution was studied. The extractability of a fluoride complex of Ta and Nb from HF solution into TBP was found to be a function of HF acidity, TBP concentration, oxide concentration, organic solvent ratio, and number of extraction operation. The results obtained can be summarized as follows: (1) %Ta extracted and Ta distribution coefficient decreased with an increase of HF acidity at constant TBP concentration, but decreased with a decrease TBP concentration at constant HF acidity. %Nb extracted and Nb distribution coefficient rose with a rise of HF acidity and TBP concentration. (2) The separation factor augmented with diminishing HF acidity, especially under 3NHF. (3) Both %Ta and %Nb extracted fell in opposition to rising oxide concentration in aqueous solution. (4) Increase in solvent ratio and number of extraction operation caused increase of both %Ta and %Nb extracted. (5) The organic extract made with by TBP included little impurity. (6) HF-TBP system had larger extraction efficiency of Ta and Nb, particularly in low HF acidity, better separation factor and higher purity of organic extractive and separative system in liquid-liquid extraction of Ta and Nb at present.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 26 (1), 52-55, 1962
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390001206481217152
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- NII Article ID
- 40018258011
- 130007332628
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 9153451
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed