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国外某风化型钒钛铁矿选矿试验研究

刘超 陈志强 吕昊子 胡红喜 饶金山 刘勇

刘超, 陈志强, 吕昊子, 胡红喜, 饶金山, 刘勇. 国外某风化型钒钛铁矿选矿试验研究[J]. 钢铁钒钛, 2021, 42(2): 117-124. doi: 10.7513/j.issn.1004-7638.2021.02.020
引用本文: 刘超, 陈志强, 吕昊子, 胡红喜, 饶金山, 刘勇. 国外某风化型钒钛铁矿选矿试验研究[J]. 钢铁钒钛, 2021, 42(2): 117-124. doi: 10.7513/j.issn.1004-7638.2021.02.020
Liu Chao, Chen Zhiqiang, Lv Haozi, Hu Hongxi, Rao Jinshan, Liu Yong. Experimental study on beneficiation of a weathered V-Ti iron ore from abroad[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 117-124. doi: 10.7513/j.issn.1004-7638.2021.02.020
Citation: Liu Chao, Chen Zhiqiang, Lv Haozi, Hu Hongxi, Rao Jinshan, Liu Yong. Experimental study on beneficiation of a weathered V-Ti iron ore from abroad[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 117-124. doi: 10.7513/j.issn.1004-7638.2021.02.020

国外某风化型钒钛铁矿选矿试验研究

doi: 10.7513/j.issn.1004-7638.2021.02.020
基金项目: 广东省科学院发展专项资金项目(2016GDASRC-0201);广东省科技厅重点实验室运行专项(2017B030314046)。
详细信息
    作者简介:

    刘超(1988—),男,工程师,硕士,主要从事选矿工艺研究。 E-mail:courage0128@163.com。

  • 中图分类号: TF841.3,TD924

Experimental study on beneficiation of a weathered V-Ti iron ore from abroad

  • 摘要: 针对国外某深度蚀变氧化型钒钛铁矿,铁矿物与钛矿物难以物理选矿实现分离,脉石矿物的比磁化系数、比重与金属矿物差异较大、易磨矿解离的特征,开展了选矿富集钒钛铁试验研究,对比了磁选回收工艺、分级-磁选回收工艺及重选回收工艺,确定磁选回收工艺为最适宜的回收工艺。磁选回收工艺获得了可市售的含钒铁精矿含Fe 60.52%、V2O5 1.03%,回收率分别为Fe 8.12%、V2O5 8.62%,钒钛铁混合精矿Fe 50.03%、V2O5 0.80%、TiO2 16.01%,回收率分别为Fe 78.61%、V2O5 78.45%、TiO2 82.88%的选别指标,混合精矿钒、钛、铁品位较高,可作为冶金进一步获取钒、钛、铁的原料。
  • 图  1  −1.5 ~ +1.0 mm粒级高岭土充填于铁、钛矿物的溶蚀孔洞中(显微镜,反光)

    Figure  1.  The −1.5 to +1.0 mm size fraction of kaolinite filling in the corroded holes of Fe-Ti minerals (optical microscope using reflected light)

    图  2  磁赤铁矿中包含粒状钛铁矿及大量微细钛铁矿包裹体(显微镜,反光)

    Figure  2.  The maghemite including a lot of ilmenite grains and fine inclusions

    图  3  褐铁矿沿着赤铁矿、钛铁矿颗粒间充填交代,残余的赤铁矿、钛铁矿包含于褐铁矿中(显微镜,反光)

    Figure  3.  The limonite metasomatizing hematite and ilmenite, and the residual hematite and ilmenite grains included in the limonite

    图  4  胶状褐铁矿包含交代残余的微细粒钛铁矿和赤铁矿(显微镜,反光)

    Figure  4.  The colloidal limonite including residual microsized ilmenite and hematite grains

    图  5  磨矿细度试验流程

    Figure  5.  The flowsheet of the grinding fineness test of ROM

    图  6  磨矿细度试验结果

    Figure  6.  The result of grinding fineness test of ROM

    图  7  强磁选背景场强条件试验结果

    Figure  7.  Test result of background field strength of HGMS

    图  8  原矿分级-磁选试验流程

    Figure  8.  The flowsheet of classification–magnetic separation

    图  9  原矿分级摇床试验流程

    Figure  9.  The flowsheet of classification-shaking process

    表  1  矿石的多元素分析

    Table  1.   The major element composition of ROM %

    FeV2O5TiO2Al2O3SiO2P2O5SK2ONa2OCaO
    43.510.7113.267.8510.54<0.010.0040.0020.310.03
    下载: 导出CSV

    表  2  矿石矿物组成

    Table  2.   The mineralogical composition of ROM %

    磁铁矿-磁赤铁矿-赤铁矿钛铁矿-蚀变钛铁矿褐铁矿蒙脱石粘土矿物白钛石石英叶腊石其它
    41.85 15.78 22.97 0.25 16.54 0.22 0.22 0.23 1.94
    下载: 导出CSV

    表  3  −2 mm原矿筛分分析结果

    Table  3.   The screening analysis result of −2 mm ROM

    粒级/mm产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    −2.0~+1.5 6.63 49.36 0.76 13.81 7.43 7.20 6.87
    −1.5~+1.0 11.68 50.14 0.78 14.40 13.30 13.01 12.62
    −1.0~+0.5 19.90 49.94 0.78 14.37 22.55 22.17 21.45
    −0.5~+0.25 13.69 48.92 0.83 14.75 15.21 16.23 15.15
    −0.25~+0.10 13.44 48.34 0.75 12.74 14.75 14.40 12.84
    −0.1~+0.075 4.11 45.64 0.69 15.99 4.25 4.05 4.92
    −0.075~+0.038 8.35 42.91 0.64 17.03 8.14 7.63 10.67
    −0.038~+0.02 8.93 40.45 0.68 15.07 8.20 8.68 10.10
    −0.02~+0.01 3.26 30.59 0.44 9.48 2.26 2.05 2.32
    −0.01~+0.005 1.86 24.75 0.41 6.64 1.05 1.09 0.93
    −0.005 8.15 15.45 0.30 3.52 2.86 3.49 2.15
    合计 100.00 44.05 0.70 13.33 100.00 100.00 100.00
    下载: 导出CSV

    表  4  磁选粗精矿精选试验结果

    Table  4.   The test result of magnetic separation concentrate cleaning

    精选作业产品名称作业产率/%品位/%作业回收率/%
    FeV2O5TiO2FeV2O5TiO2
    高梯度磁选 精矿 82.49 51.14 0.79 16.65 85.40 82.68 86.58
    中矿 17.51 41.20 0.78 12.16 14.60 17.32 13.42
    混合精矿 100.00 49.40 0.79 15.86 100.00 100.00 100.00
    细泥摇床 精矿 35.09 52.35 0.91 19.06 37.19 41.42 42.35
    中矿 40.71 50.95 0.80 14.89 41.99 42.25 38.39
    尾矿 24.20 42.48 0.52 12.56 20.82 16.33 19.25
    混合精矿 100.00 49.39 0.77 15.79 100.00 100.00 100.00
    下载: 导出CSV

    表  5  磁选回收试验结果

    Table  5.   The test result of magnetic seperation

    产品名称产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    含钒铁精矿5.8460.521.039.288.128.624.10
    混合精矿68.4050.030.8016.0178.6178.4582.88
    尾矿25.7622.420.356.6813.2712.9313.02
    原矿100.0043.530.7013.21100.00100.00100.00
    含钒铁精矿+混合精矿74.2450.850.8215.4886.7387.0786.98
    下载: 导出CSV

    表  6  原矿擦洗—振动筛筛分试验结果

    Table  6.   The test result of recovery of V, Ti, Fe by scrubbing screening

    产品名称产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    粗粒级粗精矿50.5949.290.8114.1456.0557.0453.26
    −0.25 mm粒级49.4138.300.6012.1243.9542.9646.74
    原矿100.0043.860.7113.14100.00100.00100.00
    下载: 导出CSV

    表  7  −0.25 mm粒级磁选回收试验结果

    Table  7.   The test result of −0.25 mm size range recovery by magnetic seperation

    产品名称作业产率/%品位/%作业回收率/%
    FeV2O5TiO2FeV2O5TiO2
    含钒铁精矿3.6560.010.968.645.675.802.61
    混合精矿56.6148.160.7617.2270.6371.1980.63
    尾矿39.7423.020.355.1023.7023.0116.76
    −0.25 mm粒级100.0038.600.6012.09100.00100.00100.00
    下载: 导出CSV

    表  8  原矿分级–磁选试验结果

    Table  8.   The test result of classification–magnetic separation

    产品名称产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    含钒铁精矿1.5460.120.988.172.122.150.96
    混合精矿77.4248.680.7715.2286.3484.9689.96
    尾矿21.0423.930.435.6511.5312.899.08
    原矿100.0043.650.7013.10100.00100.00100.00
    含钒铁精矿+混合精矿78.9648.900.7715.0888.4687.1190.92
    下载: 导出CSV

    表  9  原矿分级摇床试验结果

    Table  9.   The test result of classification-shaking process

    产品名称产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    摇精1~3 39.40 52.36 0.90 17.08 47.62 51.48 51.01
    摇中1~3 25.88 47.12 0.72 13.49 28.15 27.05 26.46
    摇床尾矿 34.72 30.23 0.43 2.97 24.23 21.47 22.53
    原矿 100.00 43.32 0.69 13.19 100.00 100.00 100.00
    摇精+摇中 65.29 50.28 0.80 15.66 75.77 78.53 77.47
    下载: 导出CSV

    表  10  原矿螺旋溜槽试验结果

    Table  10.   The test result of spiral chute process

    产品名称产率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    精矿43.4852.110.8717.1251.8254.0855.93
    中矿23.8143.540.6012.8223.7120.5722.93
    尾矿32.7132.700.548.6024.4725.3521.14
    原矿100.0043.720.7013.31100.00100.00100.00
    精矿+中矿67.2949.070.7815.6075.5374.6578.86
    下载: 导出CSV

    表  11  三种工艺回收指标对比结果

    Table  11.   The comparison result of recovery indexes of three processes

    回收工艺抛废率/%品位/%回收率/%
    FeV2O5TiO2FeV2O5TiO2
    分级-磁选21.0448.900.7715.0888.4687.1190.92
    磁选25.7650.850.8215.4886.7387.0786.98
    螺旋溜槽32.7149.070.7815.6075.5374.6578.86
    下载: 导出CSV

    表  12  含钒铁精矿多元素分析

    Table  12.   The major element composition of V-bearing iron concentrate %

    FeV2O5TiO2Al2O3SiO2P2O5SZnSnCuAs
    60.521.039.282.983.4120.010.050.080.020.01<0.01
    下载: 导出CSV

    表  13  强磁选精矿多元素分析

    Table  13.   The major element composition of strong magnetic concentrate %

    FeV2O5TiO2Al2O3SiO2P2O5SZnSnCuAs
    50.030.8016.018.439.870.020.120.050.050.045<0.01
    下载: 导出CSV
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  • 收稿日期:  2020-11-12
  • 刊出日期:  2021-04-10

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