Effect of CaO on Fluorine in the Decomposition of REFCO3
来源期刊:JOURNAL OF RARE EARTHS2007年第4期
论文作者:Sun Shuchen Wu Wenyuan Bian Xue Gao Bo Tu Ganfeng Wu Zhiying
Key words:CaO; REFCO3; content of fluorine; rare earths;
Abstract: Influence of CaO on thermal decomposition of REFCO3 was studied. The results showed that CaO did not affect significantly the decomposition ratio of REFCO3. The XRD experiment showed that there was a great deal of CaF2 in the roasting production, the gas chromatographic analysis on the gas of REFCO3 decomposed, and the 70% content of fluorine in the gas of REFCO3 added 15% CaO was reduced. CaO could absorb the fluorine from the decomposition of REFCO3, and the environmental pollution of the fluorine was greatly alleviated.
Sun Shuchen1,Wu Wenyuan1,Bian Xue1,Gao Bo1,Tu Ganfeng1,Wu Zhiying1
(1.School of Materials & Metallurgy, Northeastern University, Shenyang 110004, China)
Abstract:Influence of CaO on thermal decomposition of REFCO3 was studied. The results showed that CaO did not affect significantly the decomposition ratio of REFCO3. The XRD experiment showed that there was a great deal of CaF2 in the roasting production, the gas chromatographic analysis on the gas of REFCO3 decomposed, and the 70% content of fluorine in the gas of REFCO3 added 15% CaO was reduced. CaO could absorb the fluorine from the decomposition of REFCO3, and the environmental pollution of the fluorine was greatly alleviated.
Key words:CaO; REFCO3; content of fluorine; rare earths;
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