海南石碌铁矿石氢基矿相转化—磁选试验研究

金属矿山 ›› 2024, Vol. 53 ›› Issue (2): 152-.

海南石碌铁矿石氢基矿相转化—磁选试验研究

郭风芳¹　韩跃新^2,3张　琦^2,3,4　高　鹏^2,3何佳昊^2,3

1. 海南矿业股份有限公司,海南昌江 572799;2. 东北大学资源与土木工程学院,辽宁沈阳 110819;3. 难采选铁矿资源高效开发利用技术国家地方联合工程研究中心,辽宁沈阳 110819;4. 辽宁东大矿冶工程技术有限公司,辽宁朝阳 122000

出版日期:2024-02-15 发布日期:2024-04-03
基金资助:
国家重点研发计划项目(编号:2021YFC2902400)。

Experimental Study on Hydrogen-based Mineral Phase Transformation Followed by Magnetic Separation of Iron Ore from Shilu,Hainan

GUO Fengfang¹　HAN Yuexin^2,3　ZHANG Qi^2,3,4　GAO Peng^2,3　HE Jiahao^2,3

1. Hainan Mining Co. ,Ltd. ,Changjiang 572799,China;2. School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;3. National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources,Shenyang 110819,China; 4. Liaoning Dongda Mining & Metallurgy Engineering Technology Co. ,Ltd. ,Chaoyang 122000,China

Online:2024-02-15 Published:2024-04-03

摘要/Abstract

摘要： 海南石碌铁矿石铁品位为52. 45%,铁主要以赤(褐)铁矿形式存在,分布率达86. 18%,少量以磁铁矿形式存在。为高效回收利用该矿石,采用氢基矿相转化(HMPT)—磁选工艺流程开展了系统的试验研究,并对适宜条件下的产品进行了化学成分、XRD 和VSM 分析。结果表明:试样在给矿粒度-0. 074 mm 占89. 41%、HMPT 温度525 ℃、 HMPT 时间10 min、总气体流量500 mL/ min、H2 浓度20%、HMPT 产品磨矿细度-0. 045 mm 占69. 68%的适宜条件下, 经磁选获得铁品位65. 26%、铁回收率95. 39%的铁精矿。试验所获铁精矿较原重磁联合工艺铁精矿品位提高了2. 7 个百分点,铁回收率增加了30 个百分点。研究不仅为海南石碌铁矿氢基矿相转化—高效分选工业应用提供技术支撑,还为其他复杂难选铁矿资源的绿色高效分选提供了参考依据。

关键词: 铁矿石　氢基矿相转化　磁选　H₂ 与CO 摩尔比

Abstract: The iron content of the Shilu iron ore in Hainan province is 52. 45%. Within this composition,a substantial 86. 18% manifests as hematite/ limonite,with a minor presence of magnetite. To efficiently recover this ore,a systematic experimental study on Hydrogen-based Mineral Phase Transformation (HMPT)-magnetic separation process was carried out,and the products under the optimal conditions were analyzed by chemical composition,XRD and VSM. The results indicate that,under the optimal conditions of a feed particle size of -0. 074 mm accounting for 89. 41%,HMPT temperature of 525 ℃,HMPT time of 10 min,total gas flow rate of 500 mL/ min,H2 concentration of 20%,and HMPT product grinding fineness of -0. 045 mm accounting for 69. 68%,the iron concentrate with an iron grade of 65. 26% and an iron recovery rate of 95. 39% was obtained by magnetic separation. The iron concentrate obtained from the experiments exhibited an increase of 2. 7 percentage points in iron grade and a commendable 30 percentage point rise in iron recovery rate compared to the original gravity and magnetic separation combined process. The study not only provides technical support for the industrial application of HMPT-efficient sorting in Hainan Shilu iron ore,but also opens up new avenues for the green and efficient sorting of other complex and refractory iron ore resources.

Key words: iron ore,Hydrogen-based Mineral Phase Transformation (HMPT),magnetic separation,H₂ and CO molar ratio

郭风芳, 韩跃新, 张　琦, 高　鹏, 何佳昊. 海南石碌铁矿石氢基矿相转化—磁选试验研究[J]. 金属矿山, 2024, 53(2): 152-.

GUO Fengfang, HAN Yuexin, ZHANG Qi, GAO Peng, HE Jiahao. Experimental Study on Hydrogen-based Mineral Phase Transformation Followed by Magnetic Separation of Iron Ore from Shilu,Hainan[J]. Metal Mine, 2024, 53(2): 152-.

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