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Dissolution behaviors of Ta2O5, Nb2O5 and their mixture in KOH and H2O system

文献类型：期刊论文

作者Wang Xiao-hui1,2; Zheng Shi-li1; Xu Hong-bin1; Zhang Yi1
刊名TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
出版日期2010-10-01
卷号20期号:10页码:2006-2011
关键词Ta2O5 Nb2O5 KOH dissolution behavior mechanism solid-solution
ISSN号1003-6326
通讯作者Wang, XH
英文摘要The dissolution behaviors of Ta2O5, Nb2O5 and their mixture in KOH and H2O system were investigated. A L-9(3(4)) orthogonal design was used to study the effects of reaction temperature, mass ratio of KOH to Ta2O5, and reaction time on the dissolution rate of tantalum. It was found that the effect of reaction temperature on the dissolution rate of tantalum was much greater than that of the other factors. The results of factorial experiments showed that Ta2O5 was mainly transformed into insoluble potassium tantalate at low temperature (350 degrees C) and transformed into soluble potassium tantalate at high temperature (450 degrees C). The insoluble potassium tantalate was analyzed by XRD, which was proved to be KTaO3. Differently, almost all Nb2O5 was transformed into soluble potassium niobate at 350-450 degrees C. As for the mixture of Ta2O5 and Nb2O5, the dissolution rate of tantalum increased and the dissolution rate of niobium decreased as an interaction existed between niobium and tantalum. And increasing the mole ratio of Nb2O5 to Ta2O5 in the mixture was beneficial to the dissolution of both Ta2O5 and Nb2O5. In addition, the mechanism of the interaction between niobium and tantalum was also investigated through phase and chemical analysis.
WOS标题词Science & Technology ; Technology
类目[WOS]Metallurgy & Metallurgical Engineering
研究领域[WOS]Metallurgy & Metallurgical Engineering
收录类别SCI
语种英语
WOS记录号WOS:000283919400031
公开日期2013-11-11
版本出版稿
源URL[http://ir.ipe.ac.cn/handle/122111/5405]  
专题过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714		 Wang Xiao-hui,Zheng Shi-li,Xu Hong-bin,et al. Dissolution behaviors of Ta2O5, Nb2O5 and their mixture in KOH and H2O system[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2010,20(10):2006-2011.
APA Wang Xiao-hui,Zheng Shi-li,Xu Hong-bin,&Zhang Yi.(2010).Dissolution behaviors of Ta2O5, Nb2O5 and their mixture in KOH and H2O system.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,20(10),2006-2011.
MLA Wang Xiao-hui,et al."Dissolution behaviors of Ta2O5, Nb2O5 and their mixture in KOH and H2O system".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 20.10(2010):2006-2011.

入库方式： OAI收割

来源：过程工程研究所

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