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Wenyuan Wu, Xue Bian, Zhi-ying Wu, Shu-Chen Sun, G. Tu (2007)
Reaction process of monazite and bastnaesite mixed rare earth minerals calcined by CaO-NaCl-CaCl2Transactions of Nonferrous Metals Society of China, 17
Wenyuan Wu, B. Xue, Sun Shuchen, G. Tu (2006)
Study on Roasting Decomposition of Mixed Rare Earth Concentrate in CaO-NaCl-CaCl2Journal of Rare Earths, 24
Wang Zhi-chang (2007)
New Progress in Comprehensive Utilization of Tailings in Bao Steel′s ConcentratorMultipurpose Utilization of Mineral Resources
(2013)
eficiation of a complex niobium ore containing rare earths and zirconium
(2013)
Beneficiation of a complex niobium ore containing rare earths and zirconium
Li Yingxia (1999)
Study on recovering rare earth minerals and niobium mineral from strongly magnetic tailings in Baotou Mineral Processing PlantJournal of Guangdong Non-ferrous Metals
Ren Jun-huang (2010)
Study on Rare Earth Flotation from Baogang TailingsChinese Rare Earths
(2007)
Study on process of decomposition of Baosteel concentrator tailing by carbothermic chlorination
(2012)
Leaching of rare earth and preparation of cryolite from Baotou magnetic tailings
(2007)
The meaning of comprehensive utilization of rare earth and niobium resources from Baiyunebo mine is significant
Wu Wen (2002)
Reaction Mechanism of Synthetic Monazite Decomposed by CaOJournal of Northeastern University
(2009)
Extraction of rare earths from Baotou Concentrating Mill’s tailing by MgO-roasting and carbochlorination reaction
Zeng Xing-lan (2006)
Flotation of Bastnaesite and Monazite in Dressing Plant TailingChinese Rare Earths
(1996)
Recovery rare earth and niobium from ferromagnetic gangue using mineral processing
Yu Xiu-lan (2006)
Extraction of Rare Earths from Baogang Tailings by Carbochlorination Reaction Taking AlCl_3 as Defluorinating Agent
Xiaodong Wu, Qing Liang, D. Weng (2006)
Effect of Manganese Doping on Oxygen Storage Capacity of Ceria-Zirconia Mixed OxidesJournal of Rare Earths, 24
(2007)
Making national multipurpose use of resources of resources of RE in Baiyunebo deposit
In Baotou rare earth tailings ore, the grade of rare earth is close to that of the raw ore nearly. The rare earths are discarded in tailings dam caused by a serious waste of resources. First of all, the decomposition products of bastnaesite- and monazite-mixed rare earth tailings in CaO in reducing atmosphere were studied by means of X-ray diffraction (XRD). The results show that the normal products are CeO2, Ce2O3, Ca5F(PO4)3, and Ce0.75Nd0.25O1.875, and there are no REPO4 and REFCO3. Secondly, the roasted product was extracted in HCl, and the relationship among roasting time, roasting temperature, CaO addition, and extraction temperature was studied by the quadratic regression-orthogonal analysis. Through analysis, the optimum process conditions of mixed rare earth tailings extracted are obtained as follows: roasting time of 60 min, roasting temperature of 800 °C, CaO addition of 30 %, extraction temperature of 80 °C, and extraction ratio of 99.18 %.
Rare Metals – Springer Journals
Published: Nov 6, 2014
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