酒钢镜铁山竖炉焙烧矿选矿工艺优化研究

金属矿山 ›› 2019, Vol. 48 ›› Issue (07): 75-79.

酒钢镜铁山竖炉焙烧矿选矿工艺优化研究

崔进兵^1,2，陈铁军^1,2，周仙霖^1,2，罗艳红^1,2，刘伟^1,2，陆启财^1,2

1. 武汉科技大学资源与环境工程学院，湖北武汉 430081；2. 冶金矿产资源高效利用与造块湖北省重点实验室，湖北武汉 430081

出版日期:2019-07-15 发布日期:2019-09-17
基金资助:
基金项目：冶金矿产资源高效利用与造块湖北省重点实验室开放基金项目（编号:2017zy002，2017zy012）。

Study on Optimization of Beneficiation Process of Roasting Ore in Shaft Furnace of JISCO Jingtieshan

Cui Jinbing^1,2，Chen Tiejun^1,2，Zhou Xianlin^1,2，Luo Yanhong1,2，Liu Wei^1,2，Lu Qicai^1,2

1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081，China;2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan 430081，China

Online:2019-07-15 Published:2019-09-17

摘要/Abstract

摘要： 为解决酒钢镜铁山镜铁矿竖炉焙烧熟料采用磁滑轮预选—欠烧矿二次焙烧后抛废—磨矿—弱磁选工艺处理所存在的磨矿效率、精矿铁品位和铁回收率均较低等问题，进行了选矿试验研究。结果表明，原料破碎至0～5 mm后经粉矿干选，干选精矿磨矿—弱磁选，干选中矿二次焙烧—磨矿—弱磁选，最终可获得铁品位为58.31%，回收率为84.39%的铁精矿，粉矿干式抛尾产率为7.56%、铁品位为7.75%，需进行二次焙烧的中矿产率为18.03%。与现场生产指标相比，新工艺精矿铁品位高3个百分点左右，铁回收率高2个百分点左右。因此，新工艺是处理现场焙烧矿的合适工艺，具有节能减排、降本提质的效果。

关键词: 焙烧矿, 粉矿, 干式磁选, 二次焙烧

Abstract: Magnetic pulley preconcentration, the second roasting of underburned ore and discarding, grinding, low intensity magnetic separation were used to treat the roasting ore of JISCO Jingtieshan specularite. In order to solve the problems of low grinding efficiency, low concentrate iron grade and low iron recovery of specularite in shaft furnace, the beneficiation tests were carried out. The results showed that the final iron concentrate with iron grade of 58.31% and recovery rate of 84.39% can be obtained after being crushed to 0~5 mm, dry preconcentration with powder ore, grinding-low intensity magnetic separation of dry concentrate and the second roasting-grinding-low intensity magnetic separation of dry middling. The yield of dry tailing is 7.56% and the iron grade is 7.75%, and the yield of middling requiring the second roasting is 18.03%. Compared with the actual site index, the iron grade of concentrate is about 3% higher and the iron recovery rate is about 2% higher with the new process. Therefore, the new process is an appropriate process for roasted ore on site, which realizes the effect of energy conservation and emission reduction, cost reduction and quality improvement.

Key words: Roasted ore, Powder ore, Dry magnetic separation, The second roasting

崔进兵, 陈铁军, 周仙霖, 罗艳红, 刘伟, 陆启财. 酒钢镜铁山竖炉焙烧矿选矿工艺优化研究[J]. 金属矿山, 2019, 48(07): 75-79.

CUI Jin-Bing, CHEN Tie-Jun, ZHOU Xian-Lin, LUO Yan-Hong, LIU Wei, LU Qi-Cai. Study on Optimization of Beneficiation Process of Roasting Ore in Shaft Furnace of JISCO Jingtieshan[J]. Metal Mine, 2019, 48(07): 75-79.

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