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钒钛铁精矿钛白废酸浸出提钒实验

吴恩辉 李军 侯静 徐众 黄平 刘黔蜀 吕松

吴恩辉, 李军, 侯静, 徐众, 黄平, 刘黔蜀, 吕松. 钒钛铁精矿钛白废酸浸出提钒实验[J]. 矿产综合利用, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004
引用本文: 吴恩辉, 李军, 侯静, 徐众, 黄平, 刘黔蜀, 吕松. 钒钛铁精矿钛白废酸浸出提钒实验[J]. 矿产综合利用, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004
Wu Enhui, Li Jun, Hou Jing, Xu Zhong, Huang Ping, Liu Qianshu, Lv Song. Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004
Citation: Wu Enhui, Li Jun, Hou Jing, Xu Zhong, Huang Ping, Liu Qianshu, Lv Song. Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004

钒钛铁精矿钛白废酸浸出提钒实验

doi: 10.3969/j.issn.1000-6532.2022.05.004
基金项目: 国家级大学生创新创业训练计划项目(201811360001);国家自然科学基金项目(U1960101);四川省科技厅项目(2020YFH0195);四川省科技计划项目(2019ZYD026)
详细信息
    作者简介:

    吴恩辉(1984-),男,副教授,博士,主研方向为钒钛磁铁矿综合利用

  • 中图分类号: TD989

Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid

  • 摘要: 为了提高钒钛铁精矿中V2O5的综合利用率,采用正交实验法,对其进行了钛白废酸直接浸出和焙烧-浸出实验。直接浸出实验结果表明,对V2O5浸出率影响最大的因素是液固比,影响最小的是废酸浓度;在浸出温度为90℃,浸出时间90 min,液固比为5和废酸浓度为20%时,钒钛铁精矿中V2O5的浸出率较高,其值为71.05%。焙烧-浸出实验结果表明,对钒浸出率影响程度由大到小分别是焙烧温度、碳酸钾配比、碳酸钠配比和焙烧时间;在焙烧温度为1000℃,焙烧时间1 h,碳酸钠配比为5%和碳酸钾配比为10%时,V2O5的浸出率可达84.48%。

     

  • 图  1  钒钛铁精矿的物相组成

    Figure  1.  XRD patterns of vanadium titanomagnetite concentrates

    图  2  V2O5浸出率随浸出各因素的变化曲线

    Figure  2.  Variation curve change of V2O5 leaching rate with leaching different factors

    图  3  V2O5浸出率随焙烧各因素的变化曲线

    Figure  3.  Variation curve change of V2O5 leaching rate with different roasting factors

    表  1  钒钛铁精矿的化学成分/%

    Table  1.   Chemical composition of vanadium titanomagnetite concentrates

    TFeTiO2V2O5Cr2O3MgOCaOAl2O3SiO2MnO
    49.9613.960.870.451.121.043.007.360.45
    下载: 导出CSV

    表  2  正交实验因素水平

    Table  2.   Factors and levels of orthogonal test

    水平因素
    浸出温度/℃浸出时间/min液固比废酸浓度/%
    13030320
    26060510
    3909075
    下载: 导出CSV

    表  3  正交实验结果与分析

    Table  3.   L9(34) orthogonal experimental results and statistical analysis

    序号浸出
    温度/℃
    浸出
    时间/min
    液固比废酸
    浓度/%
    浸出
    率/%
    1303032025.89
    2306051046.77
    330907558.35
    460305558.14
    5606072060.30
    6609031045.69
    7903071047.08
    890603520.74
    9909052071.05
    K143.6743.7130.7752.41
    K254.7142.6058.6546.51
    K346.2958.3655.2445.74
    R11.0415.7627.886.67
    较优方案6090520
    下载: 导出CSV

    表  4  正交实验因素水平

    Table  4.   Factors and levels of orthogonal test

    水平因素
    焙烧温度/℃焙烧时间/min碳酸钠配比/%碳酸钾配比/%
    18006000
    2100012055
    312001801010
    下载: 导出CSV

    表  5  正交实验结果与分析

    Table  5.   Orthogonal experimental results and statistical analysis

    序号焙烧温度/℃焙烧时间/h碳酸钠配比/%碳酸钾配比/%浸出率/%
    180010017.58
    280025562.99
    38003101077.94
    41000151084.48
    51000210082.41
    6100030573.23
    71200110570.35
    81200201076.61
    9120035066.70
    K152.8457.4755.8155.56
    K280.0474.0071.3968.86
    K371.2272.6276.9079.68
    R27.2016.5321.0924.12
    较优方案100021010
    下载: 导出CSV
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  • 收稿日期:  2020-09-21

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