东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (5): 703-708.DOI: 10.12068/j.issn.1005-3026.2022.05.014

• 资源与土木工程 • 上一篇    下一篇

东鞍山浮选尾矿预富集精矿悬浮磁化焙烧试验研究

邵安林1,2， 苏兴国3， 韩跃新1， 李艳军1   

  1. (1. 东北大学 资源与土木工程学院， 辽宁 沈阳110819; 2. 鞍钢集团矿业有限公司， 辽宁 鞍山114000; 3. 鞍山钢铁集团有限公司 东鞍山烧结厂， 辽宁 鞍山114000)
  • 修回日期:2021-07-08 接受日期:2021-07-08 发布日期:2022-06-20
  • 通讯作者: 邵安林
  • 作者简介:邵安林(1963-)，男，黑龙江肇东人，教授级高级工程师，东北大学博士生导师； 韩跃新(1961-)，男，内蒙古赤峰人，东北大学教授，博士生导师； 李艳军(1972-)，男，内蒙古赤峰人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51734005).

Experimental Study on Pre-concentration and Suspension Magnetization Roasting of Donganshan Iron Ore Flotation Tailing

SHAO An-lin1, 2， SU Xing-guo3， HAN Yue-xin1， LI Yan-jun1   

  1. 1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. Anshan Iron and Steel Group Mining Co.， Ltd.， Anshan 114000， China; 3. Donganshan Sintering Plant， Anshan Iron and Steel Group Co.，Ltd.， Anshan 114000， China.
  • Revised:2021-07-08 Accepted:2021-07-08 Published:2022-06-20
  • Contact: LI Yan-jun
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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600mL/min，氢气体积分数20%，焙烧温度520℃，焙烧时间20min.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.

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

Abstract: 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 20min， H2 concentration of 20%， and gas flow rate of 600mL/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.

Key words: flotation iron tailing; resource utilization; suspension magnetization roasting; reduction roasting; magnetic separation

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