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预处理手段对氧化煤中腐植酸的产率的影响

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司金凤, 李星明. 预处理手段对氧化煤中腐植酸的产率的影响[J]. 矿产综合利用, 2023, 44(6): 154-158, 183. doi: 10.3969/j.issn.1000-6532.2023.06.023
引用本文: 司金凤, 李星明. 预处理手段对氧化煤中腐植酸的产率的影响[J]. 矿产综合利用, 2023, 44(6): 154-158, 183. doi: 10.3969/j.issn.1000-6532.2023.06.023
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Si Jinfeng, Li Xingming. Effect of Pretreatment Methods on the Yield of Humic Acid in Oxidized Coal[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(6): 154-158, 183. doi: 10.3969/j.issn.1000-6532.2023.06.023
Citation: Si Jinfeng, Li Xingming. Effect of Pretreatment Methods on the Yield of Humic Acid in Oxidized Coal[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(6): 154-158, 183. doi: 10.3969/j.issn.1000-6532.2023.06.023
shu

预处理手段对氧化煤中腐植酸的产率的影响

  • 1.

    山东工业职业学院　冶金与汽车工程学院，山东　淄博　256414

  • 2.

    山西潞安煤基清洁能源有限责任公司，山西　长治　046200

  • 基金项目: 国家自然科学基金（51674174）
详细信息
    作者简介: 司金凤（1989-），女，讲师，硕士，研究方向为冶金生产技术

  • 中图分类号: TD926

Effect of Pretreatment Methods on the Yield of Humic Acid in Oxidized Coal

  • 1.

    School of Metallurgy and Automotive Engineering, Shandong Vocational College of Industry, Zibo, Shandong, China

  • 2.

    Shanxi Lu′an Coal-Based Clean Energy Co., Ltd., Changzhi, Shanxi, China

    摘要

  • 这是一篇矿物加工工程领域的论文。煤炭资源在开采和储存过程中会形成大量的氧化煤，造成煤炭资源的浪费和环境污染，从氧化煤中提取腐植酸可以达到氧化煤资源高值化利用的目的。为进一步提高氧化煤中腐植酸的含量和利用效率，本文采用H2O2氧化、浓H2SO4氧化以及反浮选三种手段对氧化煤样品进行预处理，考查了其对氧化煤中腐植酸含量的影响并运用傅立叶红外光谱( FTIR)分析了含氧官能团的变化情况。实验结果表明，氧化和反浮选均能提高腐植酸的利用效率，使用H2O2氧化后，煤样中腐植酸含量由21.58%提高到43.62%；通过浓H2SO4氧化后，腐植酸含量达到48.51%，腐植酸提取率达到81.08%。经反浮选处理提取腐植酸，可脱除部分矿物质，腐植酸富集在沉物中，腐植酸提取率也有提高，经氧化处理后提取的腐植酸含氧基团增加，亲水性增强。

    This is an essay in the field of mineral processing engineering. During the mining and storage process of coal resources, a large amount of oxidized coal is formed, resulting in waste of coal resources and environmental pollution. Extracting humic acid from oxidized coal can achieve the goal of high-value utilization of oxidized coal resources. In order to further improve the content and utilization efficiency of humic acid in oxidized coal, this article uses three methods: H2O2 oxidation, concentrated H2SO4 oxidation, and reverse flotation to pretreat oxidized coal samples. The influence of these methods on the content of humic acid in oxidized coal was investigated, and the changes in oxygen-containing functional groups were analyzed using Fourier transform infrared spectroscopy (FTIR). The experimental results show that both oxidation and reverse flotation can improve the utilization efficiency of humic acid. After using H2O2 oxidation, the humic acid content in coal samples increases from 21.58% to 43.62%; After oxidation with concentrated H2SO4, the content of humic acid reached 48.51%, and the extraction rate of humic acid reached 81.08%. Extracting humic acid through reverse flotation treatment can remove some minerals, and humic acid is enriched in sediment. The extraction rate of humic acid is also improved. After oxidation treatment, the extracted humic acid has an increase in oxygen-containing groups and enhanced hydrophilicity.

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  • 图 1  H2O2氧化时间对腐植酸含量的影响

    Figure 1. 

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    图 2  H2O2浓度对腐植酸含量的影响

    Figure 2. 

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    图 3  H2SO4氧化时间对腐植酸含量的影响

    Figure 3. 

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    图 4  煤酸比对腐植酸含量的影响

    Figure 4. 

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    图 5  抑制剂用量对产品腐植酸含量的影响

    Figure 5. 

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    图 6  捕收剂用量对产品腐植酸含量的影响

    Figure 6. 

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    图 7  不同预处理方式提取腐植酸红外谱

    Figure 7. 

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    表 1  工业分析及腐植酸测定/%

    Table 1.  Industrial analysis and humic acid determination

    MadAadVadFCad腐植酸
    4.8632.3727.1335.6421.58
    下载: 导出CSV

    表 2  不同处理方法的结果对比/%

    Table 2.  Comparison of results of different methods

    腐植酸处理方法
    未处理H2O2氧化H2SO4氧化反浮选
    提取率/%61.7863.2081.0866.94
    含量/%21.5843.6248.5140.12
    下载: 导出CSV
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收稿日期:  2021-07-11
刊出日期:  2023-12-25

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