摘要
采用微波碳热还原 磁选工艺对鲕状赤铁矿提铁脱磷进行了研究,考察了还原温度、碱度、添加剂用量和原矿粒度等因素对提铁脱磷效果的影响。结果表明,最佳还原条件为:还原温度1150℃、碱度0.8、配碳量1.0、钠盐添加剂用量15%、原矿粒度0.15 mm;将还原所得球团磨至-0.15 mm,在65 mT磁场强度下磁选,可得到全铁含量87.98%、铁回收率95.48%、脱磷率69.42%的指标。
Oolitic hematite was processed by using a combination of carbothermic reduction by microwave heating and magnetic separation for iron enrichment and dephosphorization in an experiment,and impacts of reduction temperature and holding time,alkalinity,additive dosage and ore size were systematically investigated.The results show that after reduction at the temperature of 1150℃,with the alkalinity at 0.8,the reductant coefficient of 1.0,the addition of sodium salt at an amount of 15%and the ore grain size at 0.15 mm,the obtained pellets were ground down to-0.15 mm and subjected to the magnetic separation with the magnetic intensity of 65 mT,resulting in the iron powder with TFe grade of 87.98%,iron recovery of 95.48%and dephosphorization ratio of 69.42%.
作者
何文浩
陈雯
王鑫
雷鹰
李雨
HE Wen hao;CHEN Wen;WANG Xin;LEI Ying;LI Yu(Xinyu Xinliang Special Steel Co Ltd,Xinyu 338013,Jiangxi,China;School of Metallurgical Engineering,Anhui University of Technology,Ma′anshan 243032,Anhui,China;Department of Exploitation and Utilization Technology for Mineral Resources,Changsha Research Institute of Mining and Metallurgy Co Ltd,Changsha 410012,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2019年第5期92-94,99,共4页
Mining and Metallurgical Engineering
基金
国家自然科学基金(51574042,51574134)
安徽省高校优秀拔尖人才培育项目(gxyqZD2017039)
关键词
鲕状赤铁矿
微波碳热还原
磁选
铁品位
脱磷率
oolitic hematite
carbothermic reduction by microwave heating
magnetic separation
iron grade
dephosphorization ratio