Wang Weidong, Li Zhao, Wang Xiaohui, Zheng Shili. Experimental study on the extraction of niobium from crude niobium ore by KOH hydrothermal[J]. Journal of Mining Science and Technology, 2017, 2(1): 75-81.
Citation: Wang Weidong, Li Zhao, Wang Xiaohui, Zheng Shili. Experimental study on the extraction of niobium from crude niobium ore by KOH hydrothermal[J]. Journal of Mining Science and Technology, 2017, 2(1): 75-81.

Experimental study on the extraction of niobium from crude niobium ore by KOH hydrothermal

  • Received Date: 2016-07-13
  • Publish Date: 2017-02-15
  • Because the crude niobium ore is difficult to be used,according to the composition analysis and phase analysis of crude niobium ore,the KOH hydrothermal method was used to research the dissolution of crude niobium ore and the dissolution of crude niobium under hydrothermal system was researched by changing the temperature and the KOH concentration.The results show that the dissolution of niobium from crude niobium ore could reach 90%,at 30% of KOH concentration,and 200℃;the dissolution of niobium increased first and then decreased with the increasings of KOH concentration and temperature;in the whole process of the dissolution,the alkaline components Fe,Mn,Mg kept a low dissolution yields.XRD and SEM’s results show that the increasings of KOH concentration and temperature accelerated the decomposition of (Fe,Mn)(Nb,Ta)2O6.When the KOH concentration was 30%,and the temperature was 200℃,continuing to strengthen the reaction conditions,the dissolution of Nb decreased significantly owing to the transformation from soluble K8Nb6O19 to insoluble KNbO3.
  • loading
  • [1]
    幸良佐,肖文至.铌钽冶金[M].北京:冶金工业出版社,1982.
    [2]
    王肇庆,幸良佐,曾芳屏.铌钽冶金学[R].稀有金属冶金学会铌钽冶金专业委员会,1998.
    [3]
    张去非.我国铌资源开发利用的现状及可行性[J].中国矿业,2003,12(6):30-33.
    [4]
    Zhang Qufei.Present situation and feasibility about utilization of niobium-bearing resource in china[J].China Mining Magazine,2003,12(6):30-33.
    [5]
    王正五,赵团.从包钢尾矿中选择性富集铌及其它物相的研究[J].内蒙古科技大学学报,2007,26(3):207-211.
    [6]
    Wang Zhengwu,Zhao Tuan.Research on the selective enrichment of niobium and other phases in a tailing mineral of Baotou Iron and Steel (Group)Corporation[J].Journal of Inner Mongolia University of Science and Technology,2007,26(3):207-211.
    [7]
    张鉴.白云鄂博共生矿选矿技术现状与展望[J].包钢科技,2005,31(4):1-5.
    [8]
    Zhang Jian.Present situation and prospect of ore dressing technology in dealing with the Baiyunebo inter grown ores[J].Science & Technology of Baotou Steel(Group) Corporation,2005,31(4):1-5.
    [9]
    陈泉源,余永富,李养正,等.白云鄂博中贫氧化矿铌选矿新工艺研究[J].矿冶工程,1992,14(5):1-3.
    [10]
    Chen Yuanquan,Yu Yongfu,Li Yangzheng,et al.Research on the new technology of niobium concentration in the medium and poor oxidized ore in Baiyunebo[J].Mining and Metallurgical Engineering,1992,14(5):1-3.
    [11]
    Wang Lei,Li Jie,Li Baowei,et al.Extraction of niobium from the Bayan Obo Tailings by “flotation-microwave magnetic roasting-magnetic separation”[J].Advanced Materials Research,2011,314/316:823-828.
    [12]
    Li Jie,Wang Jun,Li Baowei,et al.The study on microwave magnetic roasting plus magnetic separation and acid pickling to enrich Nb of low-grade niobium minerals[J].Applied Mechanics and Materials,2012,182/183:17-22.
    [13]
    Bulin C,Zhang Bangwen,Li Baowei.Effect of mechanical activation of carbon on the reduction of the iron ore containing Niobium under low temperature thermodynamics and kinetics analysis[M].The Second China Energy Scientist Forum (CESF 2010 E-BOOK),2010:394-399.
    [14]
    许嘉,布林朝克,赵瑞超.用磁化焙烧-磁选工艺从粗铌精矿中回收铁富集铌的试验研究[J].湿法冶金,2013,32(2):75-78.
    [15]
    Xu Jia,Bulin C,Zhao Ruichao.Recovering iron and beneficiation Niobium from rough Niobium concentrate by magnetization roast-magnetic separation process[J].Hydrometallurgy of China,2013,32(2):75-78.
    [16]
    Jiang Yinju,Zhao Zengwu,Xu Zhangyin,et al.Enriching valuable elements in tailings re-concentration of bayan obo mine by direct reduction[J].Advanced Materials Research,2012,476/478:236-240.
    [17]
    陈怀杰,刘志强,朱薇,等.巴尔哲扎拉格稀有金属矿床(801)综合利用研究[J].中国稀土学报,2012,30:719-723.
    [18]
    Chen Huaijie,Liu Zhiqiang,Zhu Wei,et al.Study of comprehensive utilization of rare metal bed of baerzhe zhalage (801)[J].Journal of Chinese Society of Rare Earths,2012,30:719-723.
    [19]
    Deblonde G P,Moncomble A ,Cote G,et al.Experimental and computational exploration of the UV-visible properties of hexaniobate and hexatantalate ions[J].RSC Advances,2014,5(10):7619-7627.
    [20]
    Gauthier J P,Chagnes A,Sarah B,et al.Solubility of niobium(V) and tantalum(V) under mild alkaline conditions[J].Hydrometallurgy,2015,156 :99-106.
    [21]
    Zhou Hongming,Yi Danqing,Zhang Yi,et al.The dissolution behavior of Nb2O5,Ta2O5 and their mixture in highly concentrated KOH solution[J].Hydrometallurgy,2005,80(1/2):126-131. 
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1068) PDF downloads(919) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return