摘要
为实现东鞍山铁矿石浮选尾矿的资源化利用,对浮选尾矿预富集精矿开展了悬浮磁化焙烧试验研究.结果表明,浮选尾矿预富集精矿主要矿物组成为赤褐铁矿、磁铁矿、菱铁矿和石英,TFe品位为31.13%.浮选尾矿预富集精矿适宜的悬浮磁化焙烧工艺参数为:气体流量600 mL/min,氢气体积分数20%,焙烧温度520℃,焙烧时间20 min.焙烧产品经弱磁选可得铁精矿的TFe品位为64.23%,回收率为79.53%.焙烧产品的铁物相,XRD,VSM分析表明,经过悬浮磁化焙烧后,原矿中赤褐铁矿和碳酸铁转变为磁铁矿,矿石的饱和磁化强度和磁化率增强.
To achieve the utilization of the flotation tailing of Donganshan iron ore,pre-concentration and suspension magnetization roasting tests were carried out.The results indicate that pre-concentration of the flotation tailing mainly consists of hematite,limonite,siderite and quartz,and iron grade is 31.13%.The appropriate suspension magnetization roasting conditions were determined as roasting temperature of 520℃,roasting time of 20 min,H 2 concentration of 20%,and gas flow rate of 600 mL/min.The roasted product was benefited by low-intensity magnetic separation,and the concentration with iron grade of 64.23%and recovery of 79.53%was obtained.The analysis on roasted product by physical iron phase,XRD,and VSM indicates that the hematite,limonite,and siderite are reduced to magnetite during the suspension magnetization roasting process,and the saturation magnetization and magnetic susceptibility obviously increase.
作者
邵安林
苏兴国
韩跃新
李艳军
SHAO An-lin;SU Xing-guo;HAN Yue-xin;LI Yan-jun(School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China;Anshan Iron and Steel Group Mining Co.,Ltd.,Anshan 114000,China;Donganshan Sintering Plant,Anshan Iron and Steel Group Co.,Ltd.,Anshan 114000,China)
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第5期703-708,共6页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51734005).
关键词
浮选铁尾矿
资源化利用
悬浮磁化焙烧
还原焙烧
磁选
flotation iron tailing
resource utilization
suspension magnetization roasting
reduction roasting
magnetic separation
