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陕西省洋县毕机沟钒钛磁铁矿中钪的赋存状态研究

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郭彩莲, 成来顺, 宁新霞, 向虹, 陈炳龙, 吴天骄. 陕西省洋县毕机沟钒钛磁铁矿中钪的赋存状态研究[J]. 矿产保护与利用, 2020, 40(5): 54-61. doi: 10.13779/j.cnki.issn1001-0076.2020.05.007
引用本文: 郭彩莲, 成来顺, 宁新霞, 向虹, 陈炳龙, 吴天骄. 陕西省洋县毕机沟钒钛磁铁矿中钪的赋存状态研究[J]. 矿产保护与利用, 2020, 40(5): 54-61. doi: 10.13779/j.cnki.issn1001-0076.2020.05.007
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GUO Cailian, CHENG Laishun, NING Xinxia, XIANG Hong, CHEN Binglong, WU Tianjiao. Study on the Occurence State of Scandium in Bijigou Vanadium-titanium Magnetite in Yang contry, Shaanxi Province[J]. Conservation and Utilization of Mineral Resources, 2020, 40(5): 54-61. doi: 10.13779/j.cnki.issn1001-0076.2020.05.007
Citation: GUO Cailian, CHENG Laishun, NING Xinxia, XIANG Hong, CHEN Binglong, WU Tianjiao. Study on the Occurence State of Scandium in Bijigou Vanadium-titanium Magnetite in Yang contry, Shaanxi Province[J]. Conservation and Utilization of Mineral Resources, 2020, 40(5): 54-61. doi: 10.13779/j.cnki.issn1001-0076.2020.05.007
shu

陕西省洋县毕机沟钒钛磁铁矿中钪的赋存状态研究

  • 1.

    西安西北有色地质研究院有限公司，陕西 西安 710054

  • 2.

    陕西有色冶金矿业集团有限公司，陕西 洋县 723306

详细信息
    作者简介: 郭彩莲(1985-), 女, 青海海东人, 高级工程师, 硕士, 主要从事工艺矿物学研究。E-mail:525510116@qq.com

  • 中图分类号: TD91

Study on the Occurence State of Scandium in Bijigou Vanadium-titanium Magnetite in Yang contry, Shaanxi Province

  • 1.

    North West Geological Institute of NonFerreous Metals, Xi'an 710054, China

  • 2.

    Shanxi Nonferrous Metallurgical Mining Group Co., Ltd., Yangxian 723306, China

    摘要

  • 陕西省洋县毕机沟钒钛磁铁矿属多金属矿，其中伴生的钪品位达59.65×10-6，可供综合回收利用。采用显微镜鉴定、化学多元素分析、电子探针波谱分析、MLA分析及元素面扫描等手段首次对矿石开展详细的钪元素赋存状态研究，为钪资源的科学评价和综合利用提供重要依据。研究结果表明：矿石中没有独立钪矿物，钪以类质同象形式赋存于载体矿物中，分别为普通辉石、角闪石、阳起-纤闪石、紫苏辉石、磁铁矿和钛铁矿。钪在普通辉石、角闪石等非金属矿物中的分布率总和占84.36%，钪在磁铁矿和钛铁矿中的分布率总和占15.64%。本研究成果揭示可选择主要从尾矿中提取钪，普通辉石、角闪石的分离是提取钪的关键。

    The Bijigou vanadium-titanium magnetite deposit in Yangxian country, Shaanxi province is a polymetallic deposit, among which the associated scandium grade reaches 59.65×10-6, which can be used for comprehensive recovery and utilization. The occurrence state of scandium element was researched by microscope, chemical analysis, electron probe micro-analyzer(EPMA), mineral liberation analyser(MLA) and EDS maps image, etc. The research provided important basis of science evaluation and comprehensive utilization of scandium. The results showed that there was no independent scandium mineral in the ore. The scandium occured in augite, hornblende, actinolite, actinolite-uralite, hypersthene, magnetite and ilmenite in the form of isomorphism. The distribution rate of scandium accounted for 84.36% in non-metallic minerals such as augite and hornblende, while 15.64% in magnetite and ilmenite. The research achievements reveal that augite and hornblende separation technology is the key to extract scandium from vanadium-titanium magnetite.

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  • 图 1  矿石显微特征及结构构造

    Figure 1. 

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    图 2  主要载钪矿物元素面扫描分布图

    Figure 2. 

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    表 1  矿石的化学分析结果

    Table 1.  Chemical analysis results of the ore

    Component TFe MFe FeO V2O5 TiO2 SiO2 Na2O Al2O3 CaO P2O5 MgO Pb Cu Zn Sc2O3* S MnO As K2O LOI
    Content/% 31.88 20.65 18.34 0.375 6.09 25.515 1.315 11.62 6.71 0.0725 4.425 0.005 0.009 0.010 59.65 0.755 0.27 0.002 0.135 0.115
    注：Sc2O3单位/10-6，TFe表示全铁，MFe表示磁性铁。
    下载: 导出CSV

    表 2  矿石矿物组成及相对含量

    Table 2.  Mineral composition and raletive content of the ore

    Mineral name Content/% Mineral name Content/%
    Plagioclase 30.33 Epidote-Zosite 0.02
    Augite 14.50 Pyrite 0.55
    Amphibole 2.50 Pyrrhotite 0.15
    Chlorite 3.06 Chalcopyrite 0.02
    Actinolite-Uralite 7.50 Apatite 0.06
    Hypersthene 2.50 Quartz 0.07
    Laolinite < 0.01 Calcite 0.03
    Ilmenite 8.54 Other 0.22
    Magnenite 29.93
    下载: 导出CSV

    表 3  辉石、角闪石、阳起-纤闪石电子探针波谱分析结果

    Table 3.  Electron probe analysis results of pyroxene, amphibole and actinolite-uralite /%

    Points Mineral name Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 0.378 16.118 2.248 52.936 8.351 0.306 0.117 0.019 19.910 0.012 100.395
    2 0.422 14.947 2.130 52.705 7.126 0.630 0.065 0.025 21.265 0.017 99.332
    3 0.438 15.531 2.386 52.587 7.938 0.628 0.039 0.021 20.623 0.000 100.191
    4 0.442 15.057 2.129 52.909 6.707 0.342 0.013 0.017 20.955 0.021 98.592
    5 0.435 15.994 2.720 52.454 9.141 0.644 0.129 0.013 18.301 0.000 99.831
    6 0.357 15.190 1.933 52.252 7.239 0.252 0.182 0.024 21.119 0.000 98.548
    7 0.423 14.759 2.402 51.525 8.002 0.521 0.000 0.019 20.521 0.013 98.185
    8 0.435 15.994 2.720 52.454 9.141 0.644 0.129 0.013 18.301 0.000 99.831
    9 Augite 0.000 14.932 2.484 52.104 7.336 0.450 0.091 0.011 21.699 0.000 99.107
    10 0.000 14.992 2.283 52.683 6.472 0.288 0.143 0.029 21.891 0.004 98.785
    11 0.000 14.322 2.079 52.710 6.950 0.360 0.117 0.029 21.467 0.010 98.044
    12 0.357 15.190 1.933 52.252 7.239 0.252 0.182 0.024 21.119 0.000 98.548
    13 0.421 14.679 2.303 52.201 7.059 0.360 0.039 0.030 21.388 0.018 98.498
    Average 0.316 15.208 2.288 52.444 7.592 0.437 0.096 0.021 20.658 0.007 99.068
    Points Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 0.002 23.057 0.934 54.007 21.894 0.138 0.012 0.000 0.539 0.000 100.583
    2 0.009 23.500 0.782 54.101 22.107 0.052 0.000 0.005 0.616 0.000 101.207
    3 0.000 23.766 0.822 54.022 21.012 0.000 0.112 0.006 0.606 0.000 100.362
    4 0.020 25.512 1.072 54.365 17.034 0.243 0.025 0.021 1.242 0.009 99.545
    5 0.022 26.047 1.253 54.253 17.802 0.225 0.050 0.005 0.685 0.000 100.342
    7 Hypersthene 0.024 26.123 1.169 54.453 17.243 0.000 0.000 0.000 0.610 0.002 99.624
    8 0.042 25.440 1.253 53.876 17.946 0.190 0.000 0.003 0.813 0.004 99.567
    9 0.020 25.512 1.072 54.365 17.034 0.243 0.025 0.010 1.242 0.009 99.545
    Average 0.017 24.870 1.045 54.180 19.009 0.136 0.028 0.006 0.794 0.003 100.097
    测点 Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 2.000 13.793 10.779 43.878 11.665 2.456 0.038 0.032 11.505 0.828 97.425
    2 2.000 14.051 11.030 44.073 11.615 2.697 0.000 0.041 11.562 0.808 98.222
    3 2.461 13.995 12.580 42.591 10.762 3.063 0.140 0.009 11.134 1.046 97.781
    4 2.000 12.847 11.229 43.275 12.346 2.727 0.190 0.022 11.308 0.892 97.199
    5 2.349 13.545 11.970 42.137 10.321 3.141 0.076 0.034 11.325 1.021 95.919
    6 2.494 13.693 11.547 42.897 10.723 3.407 0.102 0.039 11.384 0.931 97.217
    7 2.575 12.663 12.574 41.759 10.535 3.561 0.077 0.005 11.289 0.996 96.034
    8 Amphibole 2.572 13.482 11.619 42.368 11.268 3.371 0.204 0.010 11.269 0.946 97.109
    9 3.025 13.182 12.076 42.372 10.839 3.329 0.064 0.035 11.057 0.471 96.450
    10 2.789 13.301 11.854 42.040 10.855 2.942 0.280 0.009 11.181 0.480 95.731
    11 2.754 13.395 12.096 42.138 10.163 3.007 0.089 0.028 11.038 0.451 95.159
    12 2.760 13.459 11.792 42.535 10.803 3.137 0.038 0.047 11.076 0.494 96.141
    13 2.670 13.188 12.883 42.368 9.497 3.743 0.076 0.039 11.415 0.601 96.480
    Average 2.496 13.430 11.848 42.649 10.876 3.122 0.106 0.027 11.273 0.767 96.682
    测点 Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 0.000 15.687 2.502 53.104 12.153 0.266 0.026 0.011 12.061 0.020 96.285
    2 0.000 13.875 2.003 52.523 10.515 3.546 0.013 0.010 13.433 0.046 96.371
    3 0.000 16.882 1.562 54.689 10.951 0.035 0.026 0.013 11.470 0.008 95.966
    4 0.000 15.674 1.787 54.147 12.929 0.142 0.000 0.018 12.037 0.044 97.140
    5 Actinolite-Uralite 0.000 15.674 1.787 54.147 12.929 0.142 0.000 0.018 12.037 0.044 97.140
    6 0.000 15.159 2.817 52.553 12.713 0.106 0.013 0.023 12.131 0.036 95.989
    Average 0.000 15.492 2.076 53.527 12.032 0.706 0.013 0.016 12.195 0.033 96.482
    注：检测条件：电压15 kV，电流1×10-8(A)，束斑1 μm。
    下载: 导出CSV

    表 4  磁铁矿、钛铁矿电子探针波谱分析结果

    Table 4.  Electron probe analysis results of magnenite and ilmenite /%

    Points Mineral name Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 0.000 0.100 0.673 0.079 90.745 0.742 0.917 0.003 0.000 0.000 93.256
    2 0.000 0.090 0.850 0.033 88.258 1.377 0.980 0.006 0.000 0.021 91.618
    3 0.024 0.054 0.654 0.040 89.340 1.263 1.134 0.003 0.000 0.013 92.529
    4 0.032 0.181 0.894 0.022 88.228 1.759 0.953 0.000 0.000 0.000 92.078
    5 0.000 0.052 0.619 0.005 90.204 1.625 0.902 0.003 0.000 0.007 93.423
    6 0.024 0.054 0.560 0.040 89.330 1.263 1.180 0.002 0.000 0.013 92.469
    7 Magnenite 0.000 0.052 0.550 0.005 90.080 1.625 0.902 0.002 0.000 0.007 93.423
    8 0.000 0.105 0.776 0.033 88.258 1.377 0.936 0.003 0.000 0.021 91.516
    9 0.000 0.100 0.579 0.043 91.200 1.218 0.898 0.000 0.018 0.012 94.068
    10 0.000 0.010 0.156 0.016 88.642 1.393 0.774 0.002 0.000 0.000 91.006
    Average 0.008 0.080 0.631 0.032 89.429 1.364 0.958 0.002 0.002 0.009 92.539
    Points Na2O MgO Al2O3 SiO2 FeO TiO2 V2O3 Sc2O3 CaO K2O Total
    1 0.040 1.420 0.050 0.010 47.100 48.170 0.200 0.007 0.130 0.010 97.130
    2 0.000 1.230 0.030 0.020 46.720 50.480 0.330 0.005 0.030 0.020 98.870
    3 0.000 1.690 0.030 0.030 46.050 48.670 0.450 0.005 0.000 0.000 96.980
    4 0.030 1.570 0.000 0.050 45.240 49.740 0.250 0.000 0.000 0.000 96.870
    5 0.010 1.690 0.020 0.020 44.690 50.270 0.270 0.010 0.000 0.000 96.990
    6 0.110 0.440 0.000 0.060 43.520 51.260 0.250 0.000 0.000 0.020 95.670
    7 Ilment 0.050 0.570 0.010 0.040 44.550 50.620 0.150 0.002 0.040 0.000 96.040
    8 0.000 0.130 0.000 0.040 47.420 49.700 0.190 0.000 0.000 0.000 97.480
    9 0.000 0.080 0.020 0.020 46.800 51.240 0.160 0.000 0.000 0.000 98.360
    10 0.000 0.020 0.000 0.010 46.330 46.620 0.430 0.006 0.010 0.000 93.420
    11 0.040 0.000 0.000 0.050 46.530 49.140 0.470 0.006 0.130 0.010 96.380
    Average 0.030 0.800 0.010 0.030 45.900 49.630 0.290 0.004 0.030 0.010 96.740
    下载: 导出CSV

    表 5  钪在载体矿物中的分布率

    Table 5.  Distribution of scandium in bearing minerals

    Minral
    name    		 Mineral
    content/%    		 Sc2O3
    Content/%    		 Sc2O3
    Metal Content/%    		 Distribution
    /%
    Clinopyroxene 14.50 0.021 0.0030 49.20
    Amphibole 2.50 0.027 0.0007 11.31
    Actinolite
    Uralite    		 7.50 0.016 0.00012 19.39 84.36
    Orthopyroxene 2.50 0.006 0.0002 2.42
    Ilmenite 8.54 0.004 0.0003 5.52 15.64
    Magnenite 29.93 0.002 0.0006 9.67
    Total - - 0.0060 100.00
    下载: 导出CSV

    表 6  铁精矿和尾矿中钪含量统计表

    Table 6.  Scandium content in concentrates and tailings

    The name of ore block Nature of the sample Sample size Sc2O3×10-6
    Qinggou(青沟) iron ore concentrate one 17.00
    Tailings two 69.75~70.35，average 70.05
    Pengxin(鹏鑫) iron ore concentrate one 19.90
    Tailings three 80.3~88.7，average 84.5
    下载: 导出CSV
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收稿日期:  2020-04-13
刊出日期:  2020-10-25

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