酒钢镜铁山铁矿石直接还原-磁选试验研究  

Experimental Research on Direct Reduction-Magnetic Separation of Iron Ore from Jingtieshan Mine of JISCO

作　　者：张志荣[1,2] 孙体昌[2] 胡天洋 

机构地区：[1]酒钢选烧厂,甘肃嘉峪关735100 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《矿冶工程》2014年第5期54-57,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金资助项目(51074016)

摘　　要：以高炉除尘灰为直接还原剂,针对镜铁山式难选铁矿石进行了直接还原-磁选试验研究。结果表明,高炉除尘灰有较好的还原效果,在配比为30%、焙烧温度为1200℃、焙烧时间为60 min的条件下,可以获得铁品位93.45%、铁总回收率为87.14%的还原铁粉。研究表明,酒钢镜铁山矿直接还原制备还原铁粉是可行性的,同时为高炉除尘灰的开发利用找到了一个新的途径。With blast furnace dust as reducing agent, experiment was conducted with a refractory iron ore from Jingtieshan Mine of JISCO by the process of direct reduction and magnetic separation. Results show that a direct-reduced iron （ DRI） with iron content of 93.45% was obtained at a TFe recovery of 87.14%, with reductant ratio of 30%, after a roasting process at temperature of 1 200℃ for 60 min, indicating the blast furnace dust bringing about a good reducing effect. It is feasible that Jingtieshan iron ore is used to prepare DRI powder by direct reduction process, thus providing a new utilization of blast furnace dust.

关 键 词：高炉除尘灰 氧化铁矿石 直接还原焙烧 还原铁粉 

分 类 号：TD925[矿业工程—选矿]