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低品位钒钛磁铁矿磨矿分级工艺优化研究与实践

吴登平 王祥波 赵刘阳

吴登平, 王祥波, 赵刘阳. 低品位钒钛磁铁矿磨矿分级工艺优化研究与实践[J]. 钢铁钒钛, 2022, 43(5): 117-122. doi: 10.7513/j.issn.1004-7638.2022.05.017
引用本文: 吴登平, 王祥波, 赵刘阳. 低品位钒钛磁铁矿磨矿分级工艺优化研究与实践[J]. 钢铁钒钛, 2022, 43(5): 117-122. doi: 10.7513/j.issn.1004-7638.2022.05.017
Wu Dengping, Wang Xiangbo, Zhao Liuyang. Research and practice on optimization of grinding and classification process of low-grade vanadium titanomagnetite[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 117-122. doi: 10.7513/j.issn.1004-7638.2022.05.017
Citation: Wu Dengping, Wang Xiangbo, Zhao Liuyang. Research and practice on optimization of grinding and classification process of low-grade vanadium titanomagnetite[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 117-122. doi: 10.7513/j.issn.1004-7638.2022.05.017

低品位钒钛磁铁矿磨矿分级工艺优化研究与实践

doi: 10.7513/j.issn.1004-7638.2022.05.017
详细信息
    作者简介:

    吴登平,1989年出生,男,四川攀枝花人,学士,助理工程师,主要从事选矿工艺研究与推广,E-mail:405766712@qq.com

  • 中图分类号: TD924

Research and practice on optimization of grinding and classification process of low-grade vanadium titanomagnetite

  • 摘要: 针对攀枝花丰源矿业有限公司使用攀枝花矿区低品位钒钛磁铁矿选矿生产现状,提出了磨矿分级工艺优化的方案,在提升铁精矿细度条件下,减少了钛铁矿过磨,更适合后续钛铁矿重选工艺,提高了钛铁矿的回收率。生产实践表明,通过优化磨矿分级工艺,“两段磨矿”改为“三段磨矿”,原矿“先磨矿后分级”改为“先分级后磨矿”以及淘汰螺旋分级机。最终铁精矿细度(−0.074 mm)提升12.34个百分点,使铁精矿品位提升1.57个百分点,磁选尾矿中−0.0385 mm粒级的产率降低20.31个百分点,大幅改善了钛铁矿选别粒度,钛铁矿回收率提高6.85个百分点。
  • 图  1  原矿矿物组成光片

    Figure  1.  Light slice diagrams of mineral composition of raw ore

    图  2  原选矿工艺流程

    Figure  2.  Original process flow chart

    图  3  技改后工艺流程

    Figure  3.  Process flow chart after technical transformation

    图  4  铁精矿品位、钛金属收率

    Figure  4.  Iron concentrate grade and titanium yield

    表  1  原矿样品矿物组成及含量分析结果

    Table  1.   Mineral composition and content analysis results of raw ore sample %

    磁铁矿钛铁矿钛磁连晶磁脉连晶钛脉连晶钛磁脉连晶磁黄连晶黄铁矿黄铜矿脉石
    15.5011.755.002.001.503.00少量2.00少量59.25
    下载: 导出CSV

    表  2  球磨粉矿粒级分布

    Table  2.   Raw ore particle size data

    粒径/mm 产率/%
    +10 2.37
    −10~+8 5.48
    −8~+5 10.18
    −5~+3 5.24
    −3~+1 21.51
    −1 55.22
    下载: 导出CSV

    表  3  一段磁选粒级对比数据

    Table  3.   Particle size comparison data of primary magnetic separation

    样品名称各粒级产率/%
    +1 mm−1~+0.3 mm−0.3~+0.15 mm−0.15~+0.074 mm−0.074~+0.045 mm−0.045~+0.0385 mm−0.0385 mm
    优化前进料5.8714.1320.2113.707.762.0636.27
    精矿14.9831.8524.1310.464.861.1812.54
    尾矿4.4912.2719.3511.1912.202.5837.92
    优化后进料7.0125.8932.8515.3510.422.186.30
    精矿8.4522.4134.7212.7715.472.223.96
    尾矿4.8528.6325.2218.808.211.7512.54
    下载: 导出CSV

    表  4  二段不同分级设备对比数据

    Table  4.   Comparison data of different classification equipment in Section II

    设备
    名称
    样品名称各粒级产率/%分级
    效率/%
    +0.3 mm−0.3~+0.15 mm−0.15~+0.074 mm−0.074~+0.045 mm−0.045~+0.0385 mm−0.0385 mm
    螺旋分级机进料6.5122.2115.3315.563.4536.9464.23
    返砂22.1428.0817.7716.872.9712.17
    溢流0.333.7812.916.5876.40
    分级旋流器进料20.8119.4927.209.352.8520.3081.14
    返砂32.1025.9526.656.501.367.44
    溢流1.759.0045.2514.205.1124.69
    下载: 导出CSV

    表  5  二段磁选粒级对比数据

    Table  5.   Particle size comparison data of secondary magnetic separation

    样品名称各粒级产率/%
    +0.3 mm−0.3~+0.15 mm−0.15~+0.074 mm−0.074~+0.045 mm−0.045~+0.0385 mm−0.0385 mm
    优化前进料0.031.1110.9318.944.9664.03
    精矿0.035.0526.0523.793.2841.80
    尾矿 6.1614.3212.063.1964.27
    优化后进料5.7011.4022.6017.703.5039.10
    精矿4.2111.2423.8817.053.0240.60
    尾矿6.504.7013.3029.404.1042.00
    下载: 导出CSV

    表  6  铁精矿粒级产率对比数据

    Table  6.   Yield comparison of particle size of iron concentrate

    各粒级产率/%
    +0.15 mm−0.15~+0.074 mm−0.074~+0.045 mm−0.045~+0.0385 mm−0.0385 mm
    优化前5.0826.0523.793.2841.80
    优化后8.0110.7827.843.6649.71
    下载: 导出CSV

    表  7  总磁尾粒级产率对比数据

    Table  7.   Yield comparison data of total magnetic tail particle size

    各粒级产率/%
    +0.15 mm−0.15 mm−0.074 mm−0.045 mm−0.0385 mm
    优化前17.1219.812.943.5546.59
    优化后34.9823.8611.003.8826.28
    下载: 导出CSV
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    [2] 王洪彬, 张国华. 浅谈攀枝花密地, 白马, 潘家田钒钛铁精矿品位[C]//鲁冀晋琼粤川辽七省金属(冶金)学会第二十一届矿业学术交流会. 太原: 山西省金属学会, 2014.

    Wang Hongbin, Zhang Guohua. Brief discussion on the grade of vanadium titanium iron concentrate in Midi, Baima and Panjiatian of Panzhihua [C]// The 21st Mining Academic Exchange of the Metal (Metallurgy) Society of Seven Provinces of Shandong, Hebei, Shanxi, Hainan, Guangdong, Sichuan and Liaoning . Taiyuan: Shanxi Metal Society, 2014.
    [3] 王雪峰. 我国钒钛磁铁矿典型矿区资源综合利用潜力评价研究[D]. 北京: 中国地质大学(北京), 2015.

    Wang Xuefeng. Evaluation of comprehensive utilization potential of resources in typical vanadium titanomagnetite mining areas in China [D] . Beijing: China University of Geosciences (Beijing), 2015.
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    [7] 王耀, 崔振立. 一段磨矿分级使用直线振动筛的实践[C]// 2011年中国矿业科技大会.西安: 中国科技部, 2011.

    Wang Yao, Cui Zhenli . Practice of using linear vibrating screen for primary grinding and classification [C]// 2011 China Mining Science and Technology Conference . Xi'an: Ministry of Science and Technology of China , 2011.
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出版历程
  • 收稿日期:  2022-06-27
  • 刊出日期:  2022-11-01

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