Study on Behavior of Carbon Reduction of Monazite Concentrate
来源期刊：JOURNAL OF RARE EARTHS2000年第3期
论文作者：TU Gan-feng LI Chun-cai ZHANG Cheng-xiang REN Cun-zhi ZHANG Shi-rong MA Xiu-fang
Key words：rare earths; monazite; carbon reduction; rare earth phosphates; rare earth silicate alloys;
Abstract: The behavior of monazite concentrate reduced by carbon, especially the decomposed procedure of rare earth phosphates, was investigated by X-ray diffraction , electron probe, TG method and chemical analysis. The results show that rare earth phosphates in monazite concentrate can be reduced to their oxides, among them the decomposition processes of cerium phosphate are not in step with lanthanum phosphate, neodymium phosphate and so on, and the phosphorus was volatilized into air in simple form.
TU Gan-feng1，LI Chun-cai1，ZHANG Cheng-xiang1，REN Cun-zhi1，ZHANG Shi-rong2，MA Xiu-fang2
(1.Academy of Material and Metallurgy, Northeastern University, Shenyang 110006, China;
2.General Research Institute for Nonferrous Metals, Beijing 100088, China)
Abstract:The behavior of monazite concentrate reduced by carbon, especially the decomposed procedure of rare earth phosphates, was investigated by X-ray diffraction , electron probe, TG method and chemical analysis. The results show that rare earth phosphates in monazite concentrate can be reduced to their oxides, among them the decomposition processes of cerium phosphate are not in step with lanthanum phosphate, neodymium phosphate and so on, and the phosphorus was volatilized into air in simple form.
Key words:rare earths; monazite; carbon reduction; rare earth phosphates; rare earth silicate alloys;
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