Technical Features and Research Progress of Separating Impurities in Producing Tantalum (Niobium) Oxide by Traditional Technology
International Journal of Mineral Processing and Extractive Metallurgy
Volume 3, Issue 2, June 2018, Pages: 29-36
Received: Jun. 21, 2018;
Accepted: Jul. 7, 2018;
Published: Aug. 14, 2018
Views 765 Downloads 73
Huijuan Yan, Jiujiang Nonferrous Metallurgy Company Limited, Jiujiang, China
Desheng Tang, Jiangxi Tungsten Industry Group Company Limited, Nanchang, China
In order to meet the demand for high purity tantalum and niobium products and to adapt to the complexity of tantalum niobium ore and waste in smelting, it was necessary to prepare high pure tantalum (niobium) oxide by traditional technology. In this paper, the process features, principles and functions of the decomposition, extraction, neutralization, washing and calcination in the traditional technology were described in detail, and the key factors which affect the separation of impurities in each process and the influences of various factors on the process and product quality were analyzed. Extraction was the key process to remove metal impurities in products. The main factors affecting the extraction separation are acidity, grade efficiency, temperature, extractant, concentration of tantalum/niobium, mass ratio of tantalum to niobium and volume ratio. In the process of precipitation and calcination the reagent purity, the equipment material, and the environmental cleanliness must be concerned to avoid the inclusion of impurity elements. The research and progress of impurity removal technology in tantalum (niobium) oxide production process were reviewed. The innovation of the traditional technology can meet special low requirement of one or several elements in the product, such as fluorine, tungsten, antimony, etc. For the future the basic research on the existence state and transformation behavior of tantalum and niobium and other elements in each process of traditional technology should be strengthened.
Technical Features and Research Progress of Separating Impurities in Producing Tantalum (Niobium) Oxide by Traditional Technology, International Journal of Mineral Processing and Extractive Metallurgy.
Vol. 3, No. 2,
2018, pp. 29-36.
Jianshe Han, Yong Zhou, Process and Equipment Progress of Tantalum Niobium Extraction Separation, Rare Metals and Cemented Carbide, 2004, 32 (2), 15-20.
Ming Wu, Tantalum and Niobium Metallurgy Technology, Beijing, 1986.
Juan Xu, Basic Research on Extraction and Separation of Niobium and Tantalum by MIBK in Low Concentration Hydrofluoric Acid System, Beijing Chemical Industrial University, 2010.
Yaohua Zhang, Ming Chen, Effects of Different Concentrations of SEC Octanol on the Extraction and Back Extraction Properties of Tantalum and Niobium, Rare Metal and Cemented Carbide, 1996 (2), 6-9.
Mingyuan Wan, Improvement of Extraction and Separation Process for Low Grade Tantalum and Niobium Minerals, Cemented Carbide, 2002, 19 (1), 29-31.
Weining Zhang, Jing Li, Jun Liu, Technology Study on Removal Metal Impurities Like Ti, Sb, etc. in Nb (OH) 5/Ta (OH) 5 by Stepwise Deposition, Ningxia Engineering Technology, 2002, 1 (3), 216-217, 220.
Yaohua Zhang, Ming Chen, Removal Antimony of Niobium Solution from Tantalum and Niobium Extraction by Sulfide Precipitation Method, Rare Metal and Cemented Carbide, 1994 (2), 54-57.
Jun Liu, Wei Wang, Peisheng Zheng, Technology Study on Removal of impurity sulfur from Ta2O5/Nb2O5, Rare Metal Bulletin, 2005 (10), 36-38.
Xiaofen Deng, Caiming Wang, Study on Reducing Fluorine Content in Nb2O5, Rare Metals and Cemented Carbide, 2005, 33 (1), 11-13.
Dianmo Zheng, Zhenxi Wang, Quan Shui Qing et al., Study on Preparation Low Fluorine and High Purity Niobium Oxide by Extraction, Journal of Nanchang University (Engineering Edition), 2005, 27 (2), 71-73.
Baiquan Jiang, Qingrong Huang, Zheng Dianmo, et al. Study on Preparation of Low Fluorine and High Purity Tantalum Oxide by Solvent Extraction, Journal of Nanchang University (Engineering Edition), 2008, 30 (2), 120-122.
Qi Wang, Heng Jiang, Hong Gong, et al. Infrared Spectroscopic Analysis of Ammonia Absorbed on Surface of Niobium Hydroxide Synthesized by Hydrofluoric Acid Method, Analysis Instrument, 2011 (3), 28-32.
Guozhen Kuang, Jinhua Song, Guoxiang Zhang, et al., A Low Nitrogen Tantalum Oxide and Its Preparation Method, China, CN 201410528130, 2015, 1, 28.
Jilin He, Zongguo Zhang, Zhongting Xu, China Tantalum Niobium Hydrometallurgy, Rare Metal Materials and Engineering, 1998, 27 (1), 9-14.
WanNian He, Sihao He, Xiangdong Wang, et al., Preparation Methods of High Purity Tantalum and Niobium Pentoxide Free Fluorine, Xinjiang nonferrous metals, 1998 (2), 36-42.
Liang Tang, Discussion on the technology of removing impurity elements tungsten in the extraction process of Preparing industrial niobium oxide, Industrial Science and Technology Expo, 2013 (32), 407-407.
Jihua Li, Jinzhong Hao, Study on Extraction of Tantalum and Niobium from High Tungsten Niobium Ore by Hydrometallurgy, Rare Metal, 1989 (6), 510-513.
HARVEY Stewart, Newtown Square, C. Edward Mosheim etc., Process for separating antimony from columbium solutions, AU4518570, 1985, 5, 21.
Jilin He, Zongguo Zhang, ZhenDa Lu, etc., Progress in nonferrous metals (vol 5), rare metals and precious metals (tantalum, niobium), Beijing, China Nonferrous Metal Industry Association, 2006.
Guozhen Kuang, Huogen Zhou, Hao Zhang, et al., Preparation of Super High Pure Tantalum Oxide and Ultra High Pure Niobium Oxide by Sec Octyl Alcohol-HF-H2SO4 System, Rare Metal and Cemented Carbide, 2005, 33 (2), 1-3, 8.
Mingyuan Wan, Preparation High Purity Tantalum Oxide by N503 Two-time Extraction Method, Rare Metal and Cemented Carbide, 2002, 30 (2), 19-22.
Yiqing Hu, Preparation of High Purity Tantalum Oxide, Rare Metal and Cemented Carbide, 1994 (1), 9-13.