安徽某低品位铜锌多金属矿工艺矿物学研究

方明山, 李艳峰, 付强. 安徽某低品位铜锌多金属矿工艺矿物学研究[J]. 矿产保护与利用, 2019, 39(5): 140-145, 150. doi: 10.13779/j.cnki.issn1001-0076.2019.04.050
引用本文: 方明山, 李艳峰, 付强. 安徽某低品位铜锌多金属矿工艺矿物学研究[J]. 矿产保护与利用, 2019, 39(5): 140-145, 150. doi: 10.13779/j.cnki.issn1001-0076.2019.04.050
FANG Mingshan, LI Yangfeng, FU Qiang. Study on the Process Mineralogy of a Low Grade Cu-Zn Polymetallic Ore in Anhui Province[J]. Conservation and Utilization of Mineral Resources, 2019, 39(5): 140-145, 150. doi: 10.13779/j.cnki.issn1001-0076.2019.04.050
Citation: FANG Mingshan, LI Yangfeng, FU Qiang. Study on the Process Mineralogy of a Low Grade Cu-Zn Polymetallic Ore in Anhui Province[J]. Conservation and Utilization of Mineral Resources, 2019, 39(5): 140-145, 150. doi: 10.13779/j.cnki.issn1001-0076.2019.04.050

安徽某低品位铜锌多金属矿工艺矿物学研究

详细信息
    作者简介: 方明山, 男, 安徽六安人, 教授级高级工程师, 硕士, 从事工艺矿物学研究, E-mail:fangmingshan@bgrimm.com
  • 中图分类号: TD91

Study on the Process Mineralogy of a Low Grade Cu-Zn Polymetallic Ore in Anhui Province

  • 安徽某低品位铜锌多金属矿石中锌、铜、铁和硫的品位分别为1.93%、0.35%、7.85%、4.03%;金品位为1.01 g/t,银品位为13.05 g/t。为合理开发利用该资源,对该矿石开展了系统的工艺矿物学研究,查明了各有价金属元素的赋存状态、各目的矿物的嵌布特征和嵌布粒度,以及影响它们回收的最主要因素,为确定合理的工艺流程、实现其综合回收提供了理论依据。采用优先选铜、铜中矿再磨精选,锌硫混选再分选的原则流程,并将金、银富集于铜精矿中,实现了矿石中锌、铜、硫以及金、银的综合回收。

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  • 图 1  不规则粒状闪锌矿

    Figure 1. 

    图 2  闪锌矿包裹乳滴状黄铜矿

    Figure 2. 

    图 3  闪锌矿粒度分布

    Figure 3. 

    图 4  不规则粒状黄铜矿

    Figure 4. 

    图 5  黄铜矿沿黄铁矿裂隙充填成脉状产出

    Figure 5. 

    图 6  斑铜矿与闪锌矿复杂共生产出

    Figure 6. 

    图 7  辉铜矿呈不规则粒状产出

    Figure 7. 

    图 8  硫化铜矿物集合体粒度分布

    Figure 8. 

    图 9  自然金嵌布在脉石颗粒之间

    Figure 9. 

    图 10  黄铜矿中包裹的粒状自然金

    Figure 10. 

    图 11  金矿物粒度分布

    Figure 11. 

    图 12  闪锌矿中包裹的碲银矿

    Figure 12. 

    图 13  银矿物粒度分布

    Figure 13. 

    图 14  粒状产出的黄铁矿

    Figure 14. 

    图 15  黄铁矿以细粒、微细粒嵌布在脉石矿物中

    Figure 15. 

    图 16  黄铁矿粒度分布

    Figure 16. 

    表 1  矿石的化学分析结果

    Table 1.  Chemical analysis results of the ore

    ComponentCuZnPbFeSAuAgCaOMgOAl2O3SiO2K2ONa2OC
    Content/%0.351.930.0927.854.031.0113.0520.431.634.0636.211.330.2217.23
    注:Au、Ag单位为g/t。
    下载: 导出CSV

    表 2  锌的化学物相分析结果

    Table 2.  Phase analysis results of zinc in the ore

    PhaseOxidized zincZinc sulfideTotal
    Zn Content/%0.111.871.98
    Distribution/%5.5694.44100.00
    下载: 导出CSV

    表 3  铜的化学物相分析结果

    Table 3.  Phase analysis results of copper in the ore

    PhaseFree
    oxidized
    copper
    Secondary
    copper
    sulfide
    Primary
    copper
    sulfide
    Bound
    copper
    Total
    Cu Content/%0.0030.0700.2700.0140.357
    Distribution/%0.8419.6175.633.92100.00
    下载: 导出CSV

    表 4  铁的化学物相分析结果

    Table 4.  Phase analysis results of iron

    PhaseMagnetic
    iron
    Ferric
    carbonate
    Hematite
    and
    limonite
    Iron
    sulfide
    Ferric
    silicate
    Total
    Fe Content/%0.131.313.302.640.517.89
    Distribution/%1.6516.6041.8333.466.46100.00
    下载: 导出CSV

    表 5  矿石的矿物组成及相对含量

    Table 5.  Mineral composition and relative content of the ore

    Mineral nameContent/%
    Sphalerite3.00
    Chalcopyrite0.82
    Bornite0.09
    Chalcocite0.02
    Pyrite
    4.95
    Marcasite
    Hematite4.71
    Magnetite0.18
    Galena0.11
    Rutile0.17
    Pyrrhotite0.03
    Calcite34.56
    Quartz25.00
    Sericite7.15
    Actinolite4.78
    Orthosite5.16
    Oligoclase0.43
    Albite0.31
    Kaolinite3.34
    Garnet3.03
    Talc1.87
    Other0.32
    下载: 导出CSV

    表 6  铜在不同矿物中的分布率

    Table 6.  Distribution of copper in different minerals

    Mineral
    name
    Mineral
    content/%
    Cu
    content/%
    Cu metal
    content/%
    Distribution
    /%
    Chalcopyrite0.8234.560.28379.52
    Bornite0.0963.330.05715.99
    Chalcocite0.0279.860.0164.49
    Total--0.356100.00
    下载: 导出CSV

    表 7  铁在不同矿物中的分布率

    Table 7.  Distribution of iron in different minerals

    Mineral
    name
    Mineral
    content/%
    Fe content
    /%
    Fe metal
    content/%
    Distribution
    /%
    Hematite4.7169.003.25041.04
    Pyrite4.9546.552.30429.10
    Calcite34.563.881.34116.93
    Garnet3.0314.020.4255.36
    Chalcopyrite0.8230.520.2503.16
    Magnetite0.1872.000.1301.64
    Actinolite4.782.230.1071.35
    Sphalerite3.002.780.0831.05
    Bornite0.0911.120.0100.13
    Pyrrhotite0.0363.530.0190.24
    Total7.92100.00
    下载: 导出CSV

    表 8  金的分布状态

    Table 8.  Distribution of gold in different minerals

    Mineral nameRelative content of
    Au-minerals/%
    Au Distribution/%
    Natural gold95.2796.36
    Electrum3.703.16
    Muthmannite0.190.42
    Kustelite0.840.06
    下载: 导出CSV

    表 9  银的分布状态

    Table 9.  Distribution of silver in different minerals

    Mineral nameRelative content of
    Ag-minerals/%
    Ag Distribution/%
    Hessite92.7892.29
    Naumannite3.353.88
    Natural Silver1.582.50
    Aguilarite1.980.89
    Argentite0.310.43
    下载: 导出CSV

    表 10  闪锌矿的X-射线能谱数据分析结果

    Table 10.  X-ray energy spectrum analysis results of sphalerite

    PointsZn/%S/%Fe/%Total/%
    165.2732.931.79100.00
    265.4132.711.88100.00
    364.2234.471.31100.00
    463.5533.143.30100.00
    558.8333.197.98100.00
    663.9933.102.91100.00
    762.9933.273.74100.00
    861.2733.205.53100.00
    966.1132.970.92100.00
    1064.8232.782.40100.00
    1164.5233.551.93100.00
    1264.1733.851.98100.00
    1364.4732.552.97100.00
    1464.7332.972.30100.00
    1565.6132.821.57100.00
    1664.2832.683.04100.00
    1764.0233.052.93100.00
    1863.6833.073.25100.00
    1964.4832.942.57100.00
    2064.4633.412.13100.00
    下载: 导出CSV

    表 11  金矿物的产出特征

    Table 11.  The output characteristics of the gold minerals

    Types of
    gold output
    Intergrowth relationshipDistribution
    /%
    Total
    /%
    Fissure goldSphalerite fissure7.228.03
    Gangue fissure0.81
    Intergranular goldSphalerite and pyrite3.1955.16
    Sphalerite and other sulfides0.50
    Copper Sulfide Minerals and pyrite0.24
    Sphalerite and gangue33.53
    Hematite and gangue13.74
    Copper Sulfide Minerals and gangue3.36
    Pyrrhotite and gangue0.61
    Inclusion goldSphalerite encapsulation10.2136.81
    Chalcopyrite encapsulation7.56
    Pyrite encapsulation1.04
    Gangue encapsulation18.00
    下载: 导出CSV

    表 12  银矿物的产出状态

    Table 12.  The output characteristics of the sliver minerals

    Types of
    silver output
    Intergrowth relationshipDistribution
    /%
    Total
    /%
    Inclusion silverSphalerite encapsulation17.6545.79
    Chalcopyrite encapsulation7.18
    Pyrite encapsulation1.28
    Gangue encapsulation19.68
    Intergranular
    silver
    Pyrite and gangue9.2647.58
    Chalcopyrite and gangue21.48
    Chalcopyrite and sphalerite3.22
    Sphalerite and pyrite1.93
    Sphalerite and gangue10.47
    Hematite and gangue1.04
    Gangue intergranular0.18
    Fissure silverPyrite fissure5.846.63
    Chalcopyrite fissure0.79
    下载: 导出CSV

    表 13  不同磨矿细度下闪锌矿的解离度测定结果

    Table 13.  The liberation of sphalerite under different grinding fineness

    -0.074 mm
    Occupancy
    /%
    Free
    particle
    /%
    Associated with
    Copper Sulfide
    Minerals
    /%
    Associated
    with pyrite
    /%
    Associated
    with other
    minerals
    /%
    6080.932.050.5016.52
    6582.551.950.1915.31
    7084.771.890.1813.16
    7585.711.850.1212.32
    8087.601.710.0410.65
    下载: 导出CSV

    表 14  不同磨矿细度下硫化铜矿物集合体的解离度测定结果

    Table 14.  The liberation of copper sulfide minerals under different grinding fineness

    -0.074 mm Occupancy/%6065707580
    Locked particle/%Free particle/%49.6555.3659.5563.466.34
    Associated with gangueLean-intergrowth13.8315.6215.5515.2315.17
    Rich-intergrowth21.8116.2113.3310.929.43
    Inclusions of chalcopyrite in Gangue5.023.983.322.401.27
    Associated with sphaleriteLean-intergrowth3.393.293.103.083.01
    Rich-intergrowth2.362.322.182.142.12
    Inclusions of chalcopyrite in sphalerite2.011.971.931.871.83
    Associated with pyriteLean-intergrowth0.320.330.330.370.44
    Rich-intergrowth1.460.830.660.550.36
    Inclusions of chalcopyrite in pyrite0.150.090.050.040.03
    下载: 导出CSV

    表 15  不同磨矿细度下黄铁矿的解离度测定结果

    Table 15.  The liberation of pyrite under different grinding fineness

    -0.074 mm
    Occupancy
    /%
    Free
    particle
    /%
    Associated
    with copper
    sulfide
    minerals/%
    Associated
    with
    sphalerite
    /%
    Associated
    with other
    minerals/%
    6077.431.280.2821.01
    6580.731.150.2717.85
    7083.070.700.2615.97
    7588.020.230.2511.50
    8089.640.200.239.93
    下载: 导出CSV
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收稿日期:  2019-08-14
刊出日期:  2019-10-25

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