Research progress

Research progress of high purity tantalum niobium

  • ZHANG Heng ,
  • CHEN Kunfeng ,
  • XUE Dongfeng
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  • 1.Institute of Novel Semiconductors,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China
    2.Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518110,China

Received date: 2024-04-26

  Online published: 2024-12-31

Abstract

Tantalum and niobium metals are indispensable strategic materials,which are widely used in integrated circuits,aerospace,automotive,superconductivity and other fields.The content about the resource distribution,hydrometallurgy,and the preparation of high purity of tantalum and niobium were introduced,and the technical status at home and abroad was analyzed.It was pointed out that the world's tantalum and niobium resource producing countries were Brazil,Canada,Australia,Africa,and other countries.The grade of tantalum and niobium resources in China was very low and highly dependent on imports.The hydrometallurgical methods for separating tantalum and niobium could be divided into alkali method,acid method and chlorination method.The alkali methods included alkali melting method and alkaline hydrothermal method.The acid methods included sulfuric acid method and hydrofluoric acid method.The preparation of high purity oxides must go through the process of leaching,extraction,separation and purification,filtration and washing and calcination.The method of preparing high purity tantalum and niobium by vacuum electron beam melting and the removal of impurities in the metal was also introduced.This method could achieve a purity over 99.999%(5 N) for tantalum and over 99.99%(4 N) for niobium.Finally,the application of high purity tantalum and niobium raw materials in integrated circuit,artificial crystal growth,and other fields was introduced.The preparation technology and products of high purity tantalum niobium were analyzed and compared with domestic and foreign enterprises.The development direction in future of tantalum and niobium raw materials was pointed out.

Cite this article

ZHANG Heng , CHEN Kunfeng , XUE Dongfeng . Research progress of high purity tantalum niobium[J]. Inorganic Chemicals Industry, 2024 , 56(12) : 1 -12 . DOI: 10.19964/j.issn.1006-4990.2024-0234

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