Action mechanism of dispersants on coal surface characteristics and slurryability

LIN Jiaoyan; LIU Jianzhong; ZHU Jiefeng; WANG Mingyi; CHENG Jun; ZHOU Junhu; CEN Kefa

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Action mechanism of dispersants on coal surface characteristics and slurryability

Thermal Power Generation Issue 3, (2016)

更新时间：2025-09-28

- Action mechanism of dispersants on coal surface characteristics and slurryability
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ530
- Published Online：15 April 2016，
  
  Published：2016
- 稿件说明：
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LIN Jiaoyan, LIU Jianzhong, ZHU Jiefeng, et al. Action mechanism of dispersants on coal surface characteristics and slurryability[J]. Thermal Power Generation, 2016, (3).
DOI：

LIN Jiaoyan, LIU Jianzhong, ZHU Jiefeng, et al. Action mechanism of dispersants on coal surface characteristics and slurryability[J]. Thermal Power Generation, 2016, (3). DOI：

摘要

以亚甲基萘磺酸钠为分散剂

研究了锡盟褐煤、大同烟煤和平顶山烟煤对分散剂的吸附特性

加入分散剂后煤的接触角和Zeta电位的变化规律

以及不同分散剂质量分数下煤的定黏成浆浓度

分析了煤表面特性与成浆性的关系。实验结果表明:煤的饱和吸附量与煤阶相关

随着煤变质程度的升高吸附量增大；分散剂的加入提高了变质程度较低的锡盟褐煤的接触角

而降低了变质程度较高的大同烟煤和平顶山烟煤的接触角；Zeta电位绝对值随着分散剂质量分数的增大先增大

再趋于平衡；锡盟褐煤定黏成浆浓度较低

约为53.5％

而大同烟煤和平顶山烟煤定黏成浆浓度较高

其中大同烟煤约为60％

平顶山烟煤接近68％

说明定黏成浆浓度与煤质特性关系较大；分散剂通过改变煤表面特性而显著改善煤的成浆特性；当制浆分散剂质量分数比饱和吸附量高约10％时

煤浆接近最大定黏成浆浓度。

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