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高钛高炉渣硫酸酸浸液沸腾水解制备二氧化钛的研究

黄晨 何思祺 唐玉梅 王岩 孙红娟

黄晨, 何思祺, 唐玉梅, 王岩, 孙红娟. 高钛高炉渣硫酸酸浸液沸腾水解制备二氧化钛的研究[J]. 钢铁钒钛, 2021, 42(3): 44-52, 93. doi: 10.7513/j.issn.1004-7638.2021.03.007
引用本文: 黄晨, 何思祺, 唐玉梅, 王岩, 孙红娟. 高钛高炉渣硫酸酸浸液沸腾水解制备二氧化钛的研究[J]. 钢铁钒钛, 2021, 42(3): 44-52, 93. doi: 10.7513/j.issn.1004-7638.2021.03.007
Huang Chen, He Siqi, Tang Yumei, Wang Yan, Sun Hongjuan. Preparation of titanium dioxide from acid leaching solution of high titanium blast furnace slag by boiling hydrolysis[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 44-52, 93. doi: 10.7513/j.issn.1004-7638.2021.03.007
Citation: Huang Chen, He Siqi, Tang Yumei, Wang Yan, Sun Hongjuan. Preparation of titanium dioxide from acid leaching solution of high titanium blast furnace slag by boiling hydrolysis[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 44-52, 93. doi: 10.7513/j.issn.1004-7638.2021.03.007

高钛高炉渣硫酸酸浸液沸腾水解制备二氧化钛的研究

doi: 10.7513/j.issn.1004-7638.2021.03.007
详细信息
    作者简介:

    黄晨(2000—),女,江苏徐州人,研究领域为工业固废资源化处理,E-mail: yebuer@qq.com;

    通讯作者:

    王岩,助教,长期从事环境污染调控与生态修复,E-mail: 741372147@qq.com

  • 中图分类号: TF823

Preparation of titanium dioxide from acid leaching solution of high titanium blast furnace slag by boiling hydrolysis

  • 摘要: 针对攀西地区高钛高炉渣有效处理不全面等问题,采用硫酸法对其钛组分进行提取,探究酸浸液沸腾水解过程中底液pH值、水解温度、加料速率、陈化时间以及二沸时间对Ti4+的水解率以及水解产物结构的影响,确定了最优水解条件。结果表明:底液pH值、水解温度、陈化时间对水解率及水解产物具有显著影响,底液pH值、加料速率以及陈化时间与水解产物的尺寸大小、分散性呈正相关,水解温度则与其呈负相关,二沸时间对其影响较小。最优水解条件为底液pH值1.7、水解温度105 ℃、加料速率6.6 mL/min、陈化时间25 min、二沸时间60 min,在此条件下Ti组分的水解率为90.71%,获得的偏钛酸经高温煅烧后为锐钛矿型二氧化钛,性能指标满足非颜料用二氧化钛的国家标准。
  • 图  1  底液pH对Ti组分水解率及产物白度的影响

    Figure  1.  Effect of pH on hydrolysis rate and whiteness of Ti component

    图  2  不同底液pH下水解产物的XRD图谱

    Figure  2.  XRD patterns of hydrolysate under different pH conditions

    图  3  不同底液pH下水解产物的粒径分布

    Figure  3.  Size distribution of hydrolysate under different pH conditions

    图  4  不同底液pH下水解产物的光学显微形貌

    Figure  4.  Microstructure of hydrolysates under different pH conditions

    图  5  水解温度对Ti组分水解率的影响

    Figure  5.  Effect of hydrolysis temperature on hydrolysis rate of Ti component

    图  6  不同水解温度下水解产物的粒径分布

    Figure  6.  Particle size distribution of hydrolysates at different hydrolysis temperatures

    图  7  不同水解温度下水解产物的光学显微形貌

    Figure  7.  Microstructure of hydrolysates at different hydrolysis temperatures

    图  8  加料速率对Ti组分水解率的影响

    Figure  8.  Effect of feeding rate on hydrolysis rate of Ti component

    图  9  不同加料速率下水解产物的粒径分布

    Figure  9.  Particle size distribution of hydrolysates at different feeding rates

    图  10  不同加料速率下水解产物的光学显微形貌

    Figure  10.  Microstructure of hydrolysates at different feeding rates

    图  11  陈化时间对Ti组分水解率的影响

    Figure  11.  Effect of maturation time on hydrolysis rate of Ti component

    图  12  不同陈化时间下水解产物的粒径分布

    Figure  12.  Particle size distribution of hydrolysates at different maturation time

    图  13  不同陈化时间下水解产物的光学显微形貌

    Figure  13.  Microstructure of hydrolysate at different maturation time

    图  14  二沸时间对Ti组分水解率的影响

    Figure  14.  Effect of second -boiling time on hydrolysis rate of Ti component

    图  15  不同二沸时间下水解产物的粒径分布

    Figure  15.  Particle size distribution of hydrolysates under different second-boiling time

    图  16  不同二沸时间下水解产物的光学显微形貌

    Figure  16.  Microstructure of hydrolysate under different second-boiling time

    图  17  煅烧产物的XRD图谱

    Figure  17.  XRD pattern of calcined product

    图  18  偏钛酸及煅烧产物的扫描电镜图谱

    Figure  18.  SEM of metatitanic acid and calcined products

    表  1  高钛高炉渣酸浸液中各金属阳离子浓度

    Table  1.   Concentration of metal cations in acid leaching solution of high titanium blast furnace slag g/L

    Ti4+Al3+Mg2+Fe3+
    333119.23.45
    下载: 导出CSV

    表  2  水淬型高钛高炉渣XRF分析

    Table  2.   XRF analysis of water quenched high titanium blast furnace slag %

    CaOSiO2TiO2Al2O3MgOSO3Fe2O3
    28.08 26.74 19.65 13.86 7.64 1.05 0.79
    K2O MnO Na2O F BaO SrO ZrO2
    0.72 0.64 0.53 0.17 0.07 0.04 0.02
    下载: 导出CSV
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  • 收稿日期:  2021-04-14
  • 刊出日期:  2021-06-10

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