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某选厂超细粒级选铁尾矿浮选钛精矿试验研究

张敏 陈树民

张敏, 陈树民. 某选厂超细粒级选铁尾矿浮选钛精矿试验研究[J]. 钢铁钒钛, 2021, 42(2): 109-116. doi: 10.7513/j.issn.1004-7638.2021.02.019
引用本文: 张敏, 陈树民. 某选厂超细粒级选铁尾矿浮选钛精矿试验研究[J]. 钢铁钒钛, 2021, 42(2): 109-116. doi: 10.7513/j.issn.1004-7638.2021.02.019
Zhang Min, Chen Shumin. Experimental study on flotation of titanium concentrate from ultrafine iron tailings of a concentration plant[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 109-116. doi: 10.7513/j.issn.1004-7638.2021.02.019
Citation: Zhang Min, Chen Shumin. Experimental study on flotation of titanium concentrate from ultrafine iron tailings of a concentration plant[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 109-116. doi: 10.7513/j.issn.1004-7638.2021.02.019

某选厂超细粒级选铁尾矿浮选钛精矿试验研究

doi: 10.7513/j.issn.1004-7638.2021.02.019
详细信息
    作者简介:

    张敏(1979—),女,山东人,硕士,高级工程师,主要从事矿物加工研发及技术管理,E-mail:280418341@qq.com

  • 中图分类号: TF823, TD924

Experimental study on flotation of titanium concentrate from ultrafine iron tailings of a concentration plant

  • 摘要: 某厂选钛车间回收工艺为强磁-重选(螺旋)工艺,由于螺旋选矿机对钛铁矿回收粒级的限制,现重选工艺流程对粗粒级钛铁矿回收较好,对细粒级钛铁矿及钛铁矿连生体回收较差,其钛回收率较低,选铁尾矿中钛回收率仅25.3%。为了有效回收钛资源,进行了强磁和浮选条件试验。结果表明,试样经过进一步细磨,再经弱磁除铁后,得到−200目(74 μm)占84%左右的超细粒级选钛试验原料,再采用“两段强磁+浮选”联合流程,最终可获得钛精矿TiO2品位为46.86%、流程精矿总产率为5.93%、流程精矿TiO2总回收率为25.84%的较好指标。
  • 图  1  矿石嵌布粒度分布

    Figure  1.  Disseminated particle size distribution of ore

    图  2  不同磨矿细度强磁试验流程

    Figure  2.  High-intensity magnetic test flow of different grinding fineness

    图  3  磨矿细度与TiO2品位和回收率的关系

    Figure  3.  Relationship between grinding fineness and TiO2 grade and recovery

    图  4  强磁场条件试验流程

    Figure  4.  Test flow chart under strong magnetic field

    图  5  硫酸条件试验流程及加药制度

    Figure  5.  Test process and dosing system of sulfuric acid condition

    图  6  柴油条件试验流程及加药制度

    Figure  6.  Test process and dosing system of diesel condition

    图  7  捕收剂条件试验流程及加药制度

    Figure  7.  Test process and dosing system of collector condition

    图  8  粗精矿精选全流程数质量流程

    Figure  8.  Whole process of coarse concentrate cleaning

    表  1  样品化学多元素分析结果

    Table  1.   Results of chemical multielement analysis of samples %

    TFeTiO2SPMnO
    14.5010.750.1240.0530.310
    CaOMgOSiO2Al2O3Cr2O3
    12.3313.3135.505.140.015
    下载: 导出CSV

    表  2  粗精矿试样全粒级筛析结果

    Table  2.   Results of full size sieving analysis of coarse concentrate sample

    粒级/目(mm)产率/%TiO2品位/%TiO2分布率/%
    +40 (+0.45)0.614.140.24
    +60 (+0.28)6.384.922.96
    +80 (+0.20)14.176.919.22
    +100 (+0.154)11.749.6510.67
    +120 (+0.125)17.4110.0016.40
    +160 (+0.098)9.7210.9310.00
    +200 (+0.074)7.499.466.67
    +320 (+0.045)19.1311.3820.51
    +400 (+0.038)2.0218.593.55
    −400 (−0.038)11.3418.5219.78
    合计100.0010.62100.00
    下载: 导出CSV

    表  3  样品试样矿物含量及单体解离度测定结果

    Table  3.   Determination results of mineral content and monomer dissociation degree of samples

    质量分数/%单体解离度/%
    钛磁铁矿钛铁矿硫化物脉石钛磁铁矿钛铁矿硫化物脉石
    10.2317.950.6171.2166.5284.1870.3688.72
    下载: 导出CSV

    表  4  粗精矿试样直接强磁精选试验结果

    Table  4.   Test results of direct high-intensity magnetic separation of coarse concentrate samples

    产品产率/%TiO2品位/%TiO2回收率/%
    精矿66.9112.5578.11
    尾矿33.097.1121.89
    给矿100.0010.75100.00
    下载: 导出CSV

    表  5  强磁选磁场强度条件试验结果

    Table  5.   Test results of high-intensity magnetic separation

    磁场强度/T产品产率/%TiO2品位/%TiO2回收率/%
    0.437 精矿 38.65 15.67 60.50
    尾矿 61.36 6.44 39.50
    给矿 100.00 10.01 100.00
    0.533 精矿 39.89 15.47 61.65
    尾矿 60.11 6.39 38.35
    给矿 100.00 10.01 100.00
    0.628 精矿 44.43 14.58 64.71
    尾矿 55.57 6.36 35.29
    给矿 100.00 10.01 100.00
    0.713 精矿 47.98 14.21 68.11
    尾矿 52.02 6.14 31.89
    给矿 100.00 10.01 100.00
    0.852 精矿 49.60 14.18 70.26
    尾矿 50.41 5.91 29.74
    给矿 100.00 10.01 100.00
    下载: 导出CSV

    表  6  冲程条件试验结果

    Table  6.   Test results under stroke conditions

    冲程/mm产品产率/%TiO2品位/%TiO2回收率/%
    35 精矿 46.88 14.57 68.23
    尾矿 53.13 5.99 31.77
    除铁尾 100.00 10.01 100.00
    40 精矿 39.89 15.47 61.65
    尾矿 60.11 6.39 38.35
    除铁尾 100.00 10.01 100.00
    45 精矿 35.59 16.10 57.24
    尾矿 64.41 6.64 42.76
    除铁尾 100.00 10.01 100.00
    50 精矿 43.94 14.84 65.13
    尾矿 56.07 6.22 34.87
    除铁尾 100.00 10.01 100.00
    下载: 导出CSV

    表  7  转环转速条件试验结果

    Table  7.   Test results under different rotating ring speed

    转环转速/(r·min−1产品产率/%TiO2品位/%TiO2回收率/%
    2.5精矿30.7117.3253.13
    尾矿69.306.7746.87
    除铁尾100.0010.01100.00
    3.0精矿34.5816.3756.55
    尾矿65.426.6543.45
    除铁尾100.0010.01100.00
    3.5精矿40.0915.0660.32
    尾矿59.916.6339.68
    除铁尾100.0010.01100.00
    4.0精矿41.4914.7861.25
    尾矿58.526.6338.75
    除铁尾100.0010.01100.00
    下载: 导出CSV

    表  8  二段强磁生产试验结果

    Table  8.   Production results under two-section high-intensity magnetic field

    产品产率/%TiO2品位/%TiO2回收率/%
    给矿100.009.98100.00
    二段强精33.7816.9757.43
    下载: 导出CSV

    表  9  三段强磁精选磁场强度条件试验结果

    Table  9.   Test results under three-section high-intensity magnetic separation

    磁场强度/T产品产率/%TiO2品位/%TiO2回收率/%
    0.533精矿76.0418.6588.46
    0.713精矿77.8618.4689.66
    0.852精矿88.9417.1294.99
    下载: 导出CSV

    表  10  硫酸用量条件试验结果

    Table  10.   Effect of sulfuric acid dosage on production

    硫酸用量/(g·t−1产品产率/%TiO2品位/%TiO2回收率/%
    600S精6.1816.585.44
    钛粗精47.4730.6877.21
    浮尾46.357.0617.35
    给矿100.0018.86100.00
    700S精5.4316.384.84
    钛粗精39.5034.3873.86
    浮尾55.077.1121.30
    给矿100.0018.39100.00
    800S精6.6716.845.95
    钛粗精35.1338.6671.92
    浮尾58.217.1822.13
    给矿100.0018.88100.00
    900S精6.8517.596.50
    钛粗精31.1340.4267.92
    浮尾62.027.6425.58
    给矿100.0018.53100.00
    1000S精5.0316.374.39
    钛粗精28.3242.4464.06
    浮尾66.668.8831.55
    给矿100.0018.76100.00
    下载: 导出CSV

    表  11  柴油用量条件试验结果

    Table  11.   Effect of diesel consumption on production

    柴油用量/(g·t−1产品产率/%TiO2品位/%TiO2回收率/%
    0S精6.6716.845.95
    钛粗精35.1338.6671.92
    浮尾58.217.1822.13
    给矿100.0018.88100.00
    560S精5.6316.324.88
    钛粗精38.0237.6876.04
    浮尾56.356.3819.08
    给矿100.0018.84100.00
    700S精5.6816.374.90
    钛粗精40.2337.3479.19
    浮尾54.095.5815.91
    给矿100.0018.97100.00
    980S精5.9316.675.23
    钛粗精44.8834.2681.43
    浮尾49.195.1213.34
    给矿100.0018.88100.00
    下载: 导出CSV

    表  13  浮选闭路试验结果

    Table  13.   Closed-circuit flotation test results

    编号产品产率/%TiO2品位/%TiO2回收率/%
    1 浮选给矿 100.00 18.68 100.00
    2 S精 6.05 16.67 5.40
    3 脱硫尾矿 93.95 18.81 94.60
    4 扫选给矿 78.72 11.32 47.70
    5 扫选精矿 5.61 17.96 5.40
    6 扫选尾矿 73.10 10.81 42.30
    7 粗选给矿 119.75 20.38 130.64
    8 粗选精矿 41.03 37.76 82.94
    9 精1给矿 53.46 37.98 108.70
    10 精1精矿 33.27 43.82 78.05
    11 中1 20.18 28.36 30.64
    12 精2给矿 34.39 43.71 80.46
    13 精2精矿 21.96 46.53 54.70
    14 中2 12.43 38.72 25.76
    15 钛精矿 20.85 46.86 52.30
    16 中3 1.11 40.35 2.40
    下载: 导出CSV

    表  12  捕收剂用量条件试验结果

    Table  12.   Effect of collector dosage on production

    捕收剂用量/(g·t−1产品产率/%TiO2品位/%TiO2回收率/%
    2200S精5.8216.125.07
    钛粗精32.9339.8771.03
    浮尾61.257.2123.89
    给矿100.0018.48100.00
    2600S精5.9316.235.17
    钛粗精36.3638.6775.52
    浮尾57.716.2319.31
    给矿100.0018.62100.00
    3000S精5.7116.375.01
    钛粗精39.5037.1478.60
    浮尾54.795.5816.38
    给矿100.0018.66100.00
    3400S精6.2316.695.50
    钛粗精42.0635.8279.68
    浮尾51.715.4214.82
    给矿100.0018.91100.00
    3800S精5.6516.084.81
    钛粗精45.5434.0682.22
    浮尾48.815.0112.96
    给矿100.0018.86100.00
    下载: 导出CSV
  • [1] Xu Lijun, Li Liang, Chen Liuxian, et al. Comprehensive recycling situation and development direction of vanadium-titanium magnetite in Paxi[J]. Sichuan Nonferrous Metals, 2011,(1):1−5. (徐丽君, 李亮, 陈六限, 等. 攀西地区钒钛磁铁矿综合回收利用现状及发展方向[J]. 四川有色金属, 2011,(1):1−5. doi: 10.3969/j.issn.1006-4079.2011.01.001
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  • 收稿日期:  2020-12-06
  • 刊出日期:  2021-04-10

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