Influence of NaCl-CaCl2 on Decomposing REPO4 with CaO
来源期刊：JOURNAL OF RARE EARTHS2007年第6期
论文作者：Sun Shuchen Wu Wenyuan Gao Bo Bian Xue Tu Ganfeng Wu Zhiying
Key words：NaCl-CaCl2; CaO; REPO4; decomposition ratio; rare earths;
Abstract: The influence of NaCl-CaCl2 on thermal decomposition of REPO4 (RE: Ce, La, Nd, Th) with CaO was studied.The heat decomposing process of REPO4 was tested with TG-DTA experiments.The results showed that the decomposition temperature of REPO4 with CaO was reduced because of adding NaCl-CaCl2 mixture (NaCl:CaCl2=1:1).The influence of the addition of NaCl-CaCl2, roasting temperature and roasting time on decomposition ratio of REPO4 with CaO was studied.The results showed that the decomposition ratio of REPO4with CaO was 79% when the addition percentage of NaCl-CaCl2 was 10%, the roasting temperature was 750℃, and the roasting time was 1 h.
Sun Shuchen1，Wu Wenyuan1，Gao Bo1，Bian Xue1，Tu Ganfeng1，Wu Zhiying1
(1.School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China)
Abstract:The influence of NaCl-CaCl2 on thermal decomposition of REPO4 (RE: Ce, La, Nd, Th) with CaO was studied.The heat decomposing process of REPO4 was tested with TG-DTA experiments.The results showed that the decomposition temperature of REPO4 with CaO was reduced because of adding NaCl-CaCl2 mixture (NaCl:CaCl2=1:1).The influence of the addition of NaCl-CaCl2, roasting temperature and roasting time on decomposition ratio of REPO4 with CaO was studied.The results showed that the decomposition ratio of REPO4with CaO was 79% when the addition percentage of NaCl-CaCl2 was 10%, the roasting temperature was 750℃, and the roasting time was 1 h.
Key words:NaCl-CaCl2; CaO; REPO4; decomposition ratio; rare earths;
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