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硫酸和硫酸铝对钡渣的无害化影响

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陈雁冰, 龙召凤, 李仕玉, 曾庆果, 王海峰, 王家伟. 硫酸和硫酸铝对钡渣的无害化影响[J]. 矿产综合利用, 2022, 43(5): 37-41. doi: 10.3969/j.issn.1000-6532.2022.05.007
引用本文: 陈雁冰, 龙召凤, 李仕玉, 曾庆果, 王海峰, 王家伟. 硫酸和硫酸铝对钡渣的无害化影响[J]. 矿产综合利用, 2022, 43(5): 37-41. doi: 10.3969/j.issn.1000-6532.2022.05.007
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Chen Yanbing, Long Zhaofeng, Li Shiyu, Zeng Qingguo, Wang Haifeng, Wang Jiawei. Harmless Effect of Sulfuric Acid and Aluminum Sulfate on Barium Slag[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 37-41. doi: 10.3969/j.issn.1000-6532.2022.05.007
Citation: Chen Yanbing, Long Zhaofeng, Li Shiyu, Zeng Qingguo, Wang Haifeng, Wang Jiawei. Harmless Effect of Sulfuric Acid and Aluminum Sulfate on Barium Slag[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 37-41. doi: 10.3969/j.issn.1000-6532.2022.05.007
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硫酸和硫酸铝对钡渣的无害化影响

  • 贵州大学材料与冶金学院，贵州　贵阳　550025

  • 基金项目: 国家基金（51764006、51864012）；贵州省计划项目（黔科合平台人才[2017]5788号，黔科合基础[2019]1411）；贵州省大学生创新创业训练计划项目（2018520044）
详细信息
    作者简介: 陈雁冰（1995-），女， 学生
    通讯作者: 王家伟（1980-），男，博士，教授，从事冶金工程的新工艺及固废综合处理

  • 中图分类号: TD989;X753

Harmless Effect of Sulfuric Acid and Aluminum Sulfate on Barium Slag

  • College of Materials and Metallurgy, Guizhou University, Guiyang, Guizhou, China

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    摘要

  • 钡渣在《国家危险废物名录》的编号为HW47，目前仍以堆放为主，对环境造成了极大污染。针对此问题，研究了硫酸和硫酸铝对钡渣的无害化处理，考查了过量系数、水量和反应时间等因素对钡渣无害化效果的影响。研究结果表明：对100 g钡渣而言，当硫酸铝过量系数为1.5，水量为25 mL，反应时间为1.5 h时，无害化后钡渣浸出毒性测定的Ba2+浓度为93.75 mg/L，Ba2+去除率为88.97%；当硫酸铝过量系数为2.0，水量为25 mL，反应时间为2 h时，无害化后钡渣浸出毒性测定的Ba2+浓度为92.30 mg/L，Ba2+去除率为89.14%，均能达到GB 5085.3-2007对钡离子的毒性鉴别标准限值。相同条件下，硫酸铝的处理效果比硫酸的好，无害化剂的pH值越低，钡渣的无害化效果越差。

    Barium slag is numbered HW47 in the national hazardous waste list. At present, it is still mainly stacked, causing great environmental pollution. Aiming at this problem, the harmlessness of barium slag by sulfuric acid and aluminum sulfate was studied. The effects of excess coefficient, water amount and reaction time on the harmless effect of barium slag were investigated. The results show that, for 100 g barium slag, when the excess coefficient of aluminum sulfate was 1.5, the water volume was 25 ml, and the reaction time was 1.5 h, the concentration of Ba2+ was 93.75 mg/L and the removal rate of Ba2+ was 88.97%. When the excess coefficient of sulfuric acid was 2.0, the water volume was 25 mL, and the reaction time was 2 h, the concentration of Ba2+ was 92.30 mg/L and the removal rate of Ba2+ was 89.14%. Both of them could reach the limit of the toxicity identification standard for barium ion in GB 5085.3-2007. Under the same conditions, the treatment effect of aluminum sulfate was better than that of sulfuric acid, and the lower pH value of harmless agent was, the worse the harmless effect of barium slag was.

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  • 图 1  钡渣的XRD分析

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  钡渣SEM及面扫描照片

    Figure 2. 

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    图 3  过量系数对无害化效果的影响

    Figure 3. 

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    图 4  过量系数对Ba2+去除率的影响

    Figure 4. 

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    图 5  水量对无害化效果的影响

    Figure 5. 

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    图 6  水量对Ba2+去除率的影响

    Figure 6. 

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    图 7  反应时间对无害化效果的影响

    Figure 7. 

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    图 8  反应时间对Ba2+去除率的影响

    Figure 8. 

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    表 1  钡渣的主要化学成分/%

    Table 1.  Main chemical components of barium slag

    BaSO4BaCO3SiO2FeOAl2O3BaSCaONa2O
    23.9537.9325.122.715.831.320.440.34
    下载: 导出CSV

    表 2  钡渣能谱分析成分/%

    Table 2.  Surface scanning results of barium slag

    CSiBa合计
    0.442.7586.81100.00
    下载: 导出CSV

    表 3  常温常压下几种钡盐的溶解度

    Table 3.  Solubility of several barium salts at room temperature and pressure

    名称碳酸钡砷酸钡铬酸钡草酸钡硫酸钡亚铁氰化钡
    溶解度/（g·100 cm-3）1.409×10-32.586×10-92.775×10-43×10-32.448×10-49.732×10-3
    下载: 导出CSV
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出版历程
收稿日期:  2020-09-04
刊出日期:  2022-10-25

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