Mechanochemical decomposition of monazite to assist the extraction of rare earth elements
作者： Wantae Kim , Inkook Bae , Soochun Chae , Heeyoung Shin
DOI: 10.1016/J.JALLCOM.2009.07.015
关键词:
摘要: Mechanochemical decomposition by milling a mixture of monazite and sodium hydroxide powder subsequent leaching sulfuric acid for the extraction rare earth elements at room temperature has been investigated. The allows mechanochemical formation hydroxides phosphate as progresses. Nearly all is decomposed within 120 min under present conditions. A 0.05N solution enables us to improve yield each La, Nd Sm around 85% or more in milled min. Also, respective Ce Pr yields about 20% 70% remain un-dissolved since they are changed into oxide forms during after operation. These oxides mostly dissolved concentration increases 5N. with increasing time. Thus plays significant role achieving high from powder.
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sci-hub.se 参考文章(16)
Speciality inorganic chemicals pp. 290- 293 ,(1998) , 10.1039/9781847557841-00290
A.C Dodd, T Tsuzuki, P.G McCormick, Nanocrystalline zirconia powders synthesised by mechanochemical processing Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 301, pp. 54- 58 ,(2001) , 10.1016/S0921-5093(00)01386-1
Yasumitsu Tanaka, Qiwu Zhang, Fumio Saito, Metal Recovery and Dechlorination of an Evaporation Tape by Means of Mechanochemical Treatment Journal of Chemical Engineering of Japan. ,vol. 38, pp. 74- 80 ,(2005) , 10.1252/JCEJ.38.74
Qiwu Zhang, Fumio Saito, Non-thermal process for extracting rare earths from bastnaesite by means of mechanochemical treatment Hydrometallurgy. ,vol. 47, pp. 231- 241 ,(1998) , 10.1016/S0304-386X(97)00048-0
Y.A. El-Nadi, J.A. Daoud, H.F. Aly, Modified leaching and extraction of uranium from hydrous oxide cake of Egyptian monazite International Journal of Mineral Processing. ,vol. 76, pp. 101- 110 ,(2005) , 10.1016/J.MINPRO.2004.12.005
Yasuo Kanazawa, Masaharu Kamitani, Rare earth minerals and resources in the world Journal of Alloys and Compounds. ,vol. 408-412, pp. 1339- 1343 ,(2006) , 10.1016/J.JALLCOM.2005.04.033
M. Kizilyalli, A.J.E. Welch, A new method for processing of monazite and examination of the products by X-ray analysis Journal of The Less Common Metals. ,vol. 127, pp. 137- 145 ,(1987) , 10.1016/0022-5088(87)90370-5
Toshio Iijima, Kazuhiro Kato, Toyohiko Kuno, Akitsugu Okuwaki, Yoshiaki Umetsu, Taijiro Okabe, Cerium concentrate and mixed rare earth chloride by the oxidative decomposition of bastnaesite in molten sodium hydroxide Industrial & Engineering Chemistry Research. ,vol. 32, pp. 733- 737 ,(1993) , 10.1021/IE00016A021
Jinfeng Lu, Qiwu Zhang, Jun Wang, Fumio Saito, Masashi Uchida, Synthesis of N-Doped ZnO by grinding and subsequent heating ZnO-urea mixture Powder Technology. ,vol. 162, pp. 33- 37 ,(2006) , 10.1016/J.POWTEC.2005.12.007
Aly M Abdel-Rehim, An innovative method for processing Egyptian monazite Hydrometallurgy. ,vol. 67, pp. 9- 17 ,(2002) , 10.1016/S0304-386X(02)00134-2