【作者】 郭宇峰； 姜涛； 邱冠周； 董海刚； 吕亚男； 马晓雯； 游高；

【Author】 GUO Yu-feng JIANG Tao QIU Guan-zhou DONG Hai-gang L(?) Ya-nan MA Xiao-wen YOU Gao (School of Minerals Processing and Bioengineering, Central South University Changsha Hunan, 410083, P R China)

【机构】 中南大学资源加工与生物工程学院；

【摘要】 对中国攀西地区钒钛磁铁矿分选所得的产品钛精矿,采用还原-磨选法实现了 Fe/Ti 的有效分离。与传统还原磨选法相比,新工艺采用新型添加剂 KS 作还原过程的催化剂,使钛精矿适宜的还原温度由通常的1250～1280 ℃下降到1100℃。机理研究表明:添加剂 KS 具有强化固相扩散的作用及降低钛精矿中杂质离子 Mg²⁺对 Fe₂TiO₅ 的稳定作用。能在较低的温度下实现了钛精矿中铁氧化物的还原和金属铁晶粒的长大,提高磨选分离效率。更多还原

【Abstract】 Using the flotation concentrate of ilmenite as feed obtained by separation from vanadiferous titanomagnetite in Panxi district,by catalysis reduction followed physical separation,titanium and iron have been successfully separated. Compared to traditional reduction-separation processes,the reduction temperature in the new process is reduced to 1100℃ from 1250～1280℃.Investigation shows that the catalyst KS has the functions of enforcing solid diffusion of iron ions and easing the stabilization of Mg²⁺ to Fe₂TiO₅,and hence the reduction of ilmenite can be carried out at the lower temperature.更多还原