高铝铁矿焙烧球团非等温还原研究  

Non-isothermal reduction investigation on roasted pellets of high alumina iron ore

作　　者：张作良[1] 陈韧[1] 孙野[1] 李晓亮[1] 李玲玲[1] 李猛[1] 邹宗树[2] Zhang Zuoliang Chen Ren Sun Ye Li Xiaoliang Li Lingling Li Meng Zou Zongshu(School of Metallurgy Engineering, Liaoning Institute of Science ＆ Technology, Benxi 117004, China School of Metallurgy, Northeastern University, Shenyang 110819, China.)

机构地区：[1]辽宁科技学院冶金工程学院,辽宁本溪117004 [2]东北大学冶金学院,沈阳110819

出　　处：《材料与冶金学报》2017年第2期79-82,共4页Journal of Materials and Metallurgy

基　　金：辽宁科技学院博士科研启动基金(No.1604B01);辽宁省教育厅一般项目(No.1609081);辽宁省自然科学基金(No.201602403)

摘　　要：采用CO、H_2对高铝铁矿焙烧球团在高温同步热分析仪(NETZSCH STA 409C/CD)中进行非等温还原.结果表明:焙烧球团经CO还原后,随着设定温度由1 273 K升高到1 473 K,最终还原度由32.21%仅增加到46.78%;而经H_2还原后,随着设定温度由1 273 K升高到1 573 K,最终还原度由81.93%增加到100%.在纯氢气还原条件下,高铝铁矿焙烧球团中的铁氧化物是可以被彻底还原的.Non - isothermal reduction for roasted pellets of high alumina iron ore through a high temperature synchronized thermal analyzer （ NETZSCH STA 409C/CD） was conducted with CO and H2. The results showed that when the roasted pellet is reduced by CO, with the temperature increasing from 1 273 K to 1 473 K, the final reduction degree rises from 32. 21% to 46. 78% . While it is reduced by hydrogen, with the temperature increasing from 1 273 K to 1 573 K, the final reduction degree rises from 81. 93% to 100% . It suggests that the iron ore can completely be reduced to metallic iron by hydrogen.

关 键 词：高铝铁矿石 焙烧球团 非等温还原 还原度 铝铁分离 

分 类 号：TF556[冶金工程—钢铁冶金]