程潮磁铁精矿磁悬浮精选机提精降杂试验研究

现代矿业 ›› 2023, Vol. 39 ›› Issue (02): 5-8.

• 铁矿石加工与铁回收专栏 • 上一篇下一篇

程潮磁铁精矿磁悬浮精选机提精降杂试验研究

李鹏飞¹ 陈兴² 黄雯¹ 陈铁军²李超前¹ 郑德亮³

1. 武钢资源集团程潮矿业有限公司；2. 武汉科技大学资源与环境工程学院； 3. 沈阳隆基电磁科技股份有限公司

出版日期:2023-02-25 发布日期:2023-05-09
基金资助:
湖北省重点研发计划项目（编号：2022BCA062）

Experiment Study on Quanlity Improvement and Purity Reduction by Magnetic Levitation Separator for Chengchao Magnetic Concentrate

LI Pengfei¹ CHEN Xing² HUANG Wen¹ CHEN Tiejun² LI Chaoqian¹ ZHENG Deliang³

1. Chengchao Mining Co.，Ltd.，Wuhan Iron and Steel Resources Group；2. School of Resources and Environmental Engineering，Wuhan University of Science Technology；3. LONGI Magnet Co.，Ltd.

Online:2023-02-25 Published:2023-05-09

摘要/Abstract

摘要： 为使程潮选矿厂的精矿球团满足氢基竖炉对品质的要求，在对现场精矿进行详细分析的基础上，采用悬浮磁精选机进行了精选试验。结果表明，试样不磨矿，直接进行2 段悬浮磁精选机精选，可获得品位为68.63%、回收率为96.51%的精矿，并产生品位为36.11%、回收率为3.49% 的精选尾矿；试样在磨矿细度为-37 μm占75%、上升水流为12 L/min、磁场强度为8.8 kA/m情况下进行2 段悬浮磁精选机精选，可获得品位为68.71%、回收率为98.81% 的精矿，品位为18.38% 的尾矿经磁选管再选可降至14.62%，获得的品位为51.06%、流程回收率为0.34%的低品位精矿可返回再磨作业。虽然2 个流程均能获得符合目标要求的精矿，但有预先磨矿的流程不仅精矿品位略高，且回收率高2.3 个百分点，因此，该流程有一定的优越性。

关键词: 磁铁精矿, 球团, 氢基竖炉直接还原, 磁悬浮精选机

Abstract: In order to make the pellets in Chengchao Iron Mine meet the requirement of hydrogen base shaft furnace in terms of quality，on the basis of detailed analysis of on-site concentrate，the concentration test was carried out by using magnetic levitation separator. The results showed that concentrate with grade of 68.63% and recovery rate of 96.51% could be obtained directly by two-stage cleaning with magnetic levitation separator without grinding，and tailings with grade of 36.11% and recovery rate of 3.49% could be produced. Under the conditions of grinding fineness of -37 μm accounting for 75%，rising flow of 12 L/min and magnetic field intensity of 8.8 kA/m，by two-stage cleaning with magnetic levitation separator， concentrate with grade of 68.71% and recovery rate of 98.81% was obtaine. And the grade of tailings is 18.38% and can be reduced to 14.62% after magnetic separation reselection. The low grade concentrate with a grade of 51.06% and process recovery rate of 0.34% can be returned to the regrinding operation. Although the two processes can obtain the concentrate meeting the target requirements，the process with pregrinding not only has slightly higher concentrate grade，and the recovery rate is 2.3 percentage points higher，so the process has certain advantages.

Key words: magnetite concentrate, pellet, direct reduction with hydrogen base shaft furnace, magnetic levitation separator

李鹏飞, 陈兴, 黄雯, 陈铁军, 李超前, 郑德亮. 程潮磁铁精矿磁悬浮精选机提精降杂试验研究[J]. 现代矿业, 2023, 39(02): 5-8.

LI Pengfei, CHEN Xing, HUANG Wen, CHEN Tiejun, LI Chaoqian, ZHENG Deliang. Experiment Study on Quanlity Improvement and Purity Reduction by Magnetic Levitation Separator for Chengchao Magnetic Concentrate[J]. Modern Mining, 2023, 39(02): 5-8.

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程潮磁铁精矿磁悬浮精选机提精降杂试验研究

Experiment Study on Quanlity Improvement and Purity Reduction by Magnetic Levitation Separator for Chengchao Magnetic Concentrate

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