贵州赫章鲕状赤铁矿选矿试验研究

金属矿山 ›› 2011, Vol. 40 ›› Issue (1): 45-48.

贵州赫章鲕状赤铁矿选矿试验研究

唐云^1,2，刘安荣¹，杨强¹，张覃^1,2

1.贵州大学；2.贵州非金属矿产资源综合利用重点实验室

出版日期:2011-01-15 发布日期:2011-01-06
基金资助:
贵州省优秀科技教育人才省长专项基金项目（编号：Z073218）；贵州大学研究生创新基金项目（编号：2009028）

Test Research on Beneficiation of Hezhang Oolitic Hematite in Guizhou Province

Tang Yun^1,2，Liu Anrong¹，Yang Qiang¹，Zhang Qin^1,2

1. Guizhou University；2.Guizhou Key Laboratory for Comprehensive Utilization of Non-metallic Mineral Resources

Online:2011-01-15 Published:2011-01-06

摘要/Abstract

摘要： 采用强磁选—反浮选工艺对贵州赫章鲕状赤铁矿进行提铁降磷试验研究。在磨矿细度-0.075 mm占77.50%，磁感应强度1.55 T和棒介质的条件下进行1次强磁选粗选；强磁选粗精矿在磨矿细度-0.038 mm占84.00%，磁感应强度1.40 T和网介质的条件下进行1次精选；强磁选粗尾矿在磁感应强度1.40 T和网介质的条件下进行1次扫选，然后精选尾矿和扫选精矿合并返回磨矿闭路流程，获得铁品位52.13%，磷含量0.45%，回收率72.16%的铁精矿。采用高效调整剂和高效捕收剂将强磁选精矿进行1次反浮选，获得了铁品位56.14%，磷含量0.22%，回收率62.48%的铁精矿。强磁选—反浮选工艺为开发利用该地鲕状赤铁矿提供了可行的依据。

关键词: 鲕状赤铁矿, 提铁降磷, 强磁选, 强磁选—反浮选

Abstract: The experiments on iron improvement and phosphorous reduction for Hezhang oolitic hematite in Guizhou, were carried out by high intensity magnetic separation-reverse flotation. With a grinding fineness of 77.50% -0.075 mm, the magnetic field strength of 1.55 T and the rods media, a rough high-intensity magnetic separation was conducted. Next, rough concentrate is treated by a cleaning separation under conditions of grinding fineness of -0.038 mm 84.00%, the magnetic field strength of 1.40 T and the net media. And rough tailings are treated by a scavenging separation under conditions of the magnetic field strength at 1.40 T and the net media. Then, the cleaning tailings and scavenging concentrate are mixed together and send back into the grinding closed-circuit process to obtain iron concentrate grading at 52.13% with phosphorus content of 0.45% and the recovery of 72.16%. Finally, a reverse flotation is conducted on concentrate from high-intensity magnetic separation by adopting the high-performance regulators and connectors. Then iron concentrate with iron grade of 56.14% and the phosphorus content of 0.22% and the recovery of 62.48% is achieved. The high-intensity magnetic separation-inverse flotation process provides a feasible basis for developing the oolitic hematite in this area.

Key words: Oolitic hematite, Iron increase and phosphorous reduction, High intensity magnetic separation, High intensity magnetic separation-reverse flotation

唐云, 刘安荣, 杨强, 张覃. 贵州赫章鲕状赤铁矿选矿试验研究[J]. 金属矿山, 2011, 40(1): 45-48.

TANG Yun, LIU An-Rong, YANG Qiang, ZHANG Qin. Test Research on Beneficiation of Hezhang Oolitic Hematite in Guizhou Province[J]. Metal Mine, 2011, 40(1): 45-48.

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