Study on Escaping Fluorine Inhibition in Calcining Process of Mixed Rare Earth Concentrate

摘要：

GC technology was used to study escaping fluorine in calcined process of mixed rare earth concentrate. The mixed rare earth concentrate and it adding assistant of CaO-NaCl-CaCl<,2> were calcined at 400～750℃ for 30~120min, and then total amount of fluorine, exhausting ratio of fluorine, decomposition ratio and the component were determined. The results showed that adding CaO-NaCl-CaCl<,2> the decomposition ratio was up to 90％ at 700℃ in 1h, and the escaping ratio of fluorine decreased from 29.52％ to 0.948％. The average inhabitation ratio was 98.39％. This method supplied basis for low energy and clean decomposition of mixed rare earth concentrate.

关键词： mixed rare earth concentrate CaO-NaCl-CaCl<,2> roaste fixed fluorine GC technology

作者: Wu Zhiying(吴志颖) Wu Wenyuan(吴文远) SunShunchen(孙树臣) Bian Xue(边雪) Tu Ganfeng(涂赣峰)

作者单位: School of Materials & Metallurgy, Northeastern University, Shenyang 110004, China Department of Phys School of Materials & Metallurgy, Northeastern University, Shenyang 110004, China School of Materials & Metallurgy, Northeastern University, Shenyang 110004,China

会议类型: 国际会议

会议名称: 第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)

会议地点: 包头

会议语种:英文

页码: 129-132

在线出版日期: 2007-08-07（万方平台首次上网日期，不代表论文的发表时间）