高磷鲕状赤铁矿煤基还原焙烧制备直接还原铁  

Preparation of direct reduction iron by coal-based reduction of high phosphorus oolitic hematite

作　　者：蒋曼[1] 王依帆 张乐[2] 樊洁 于福顺 董风芝[1] JIANG Man;WANG Yifan;ZHANG Le;FAN Jie;YU Fushun;DONG Fengzhi(School of Resources and Environmental Engineering,Shangdong University of Technology,Zibo 255049,China;Scientific and Technicial Information Institute of Zibo,Zibo 255040,China;Shenkan Qinhuangdao General Engineering Design and Research Institute Corporation,Qinhuangdao 066004,China)

机构地区：[1]山东理工大学资源与环境工程学院,山东淄博255049 [2]淄博市科学技术情报研究所,山东淄博255040 [3]中冶沈勘秦皇岛工程设计研究总院有限公司,河北秦皇岛066004

出　　处：《山东理工大学学报（自然科学版）》2020年第3期1-4,共4页Journal of Shandong University of Technology:Natural Science Edition

基　　金：国家自然科学基金青年科学基金项目(51804188);山东省自然科学基金面上项目(ZR2016EEM19);山东省自然科学基金博士基金项目(ZR2018BEE015)。

摘　　要：针对鄂西高磷鲕状赤铁矿,采用煤基还原焙烧-磁选工艺制备直接还原铁,研究了还原剂用量、焙烧温度、焙烧时间、助熔剂等对还原焙烧效果的影响规律。研究结果表明:在焙烧温度为1 100℃,焙烧时间为50 min,还原剂用量为30%,助熔剂为碳酸钠和硫酸钠、用量分别为15%和30%时,磨矿磁选后获得直接还原铁的铁品位91.13%,铁的回收率78.87%,残留S含量0.03%,P含量0.09%,满足电炉炼钢原料要求。本文方法为同类型铁矿石的综合开发利用提供了充分的技术支持。In order to prepare reducing iron powder from high-phosphorus oolitic hematite in western Hubei by the technology of coal-based reduction roasting and magnetic separation, the effects of reducing agent dosage, roasting temperature, roasting time and flux on reducing roasting effect were studied. The results show that when the calcination temperature is 1 100 ℃, roasting time is 50 min, dosage of reductant coal is 30%, the flux of sodium carbonate and sodium sulfate is 15% and 30%, respectively,the grade of direct reduced iron reached 91.13% after grinding magnetic separation, recovery rate reached 78.87%, residual S content is 0.03%,and good index of the P content is 0.09%,which satisfies the requirement of steel raw materials. The test process provides sufficient technical support for the comprehensive development and utilization of the same type of iron ore.

关 键 词：高磷鲕状赤铁矿 助熔剂 煤基还原焙烧 

分 类 号：TD953[矿业工程—选矿]