esearch status of drying and crushing characteristics of lignite

YANG Yumeng; LIU Jianzhong; HE Xiang; WANG Zhihua; ZHOU Junhu; CEN Kefa

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esearch status of drying and crushing characteristics of lignite

更新时间：2025-09-28

- esearch status of drying and crushing characteristics of lignite
- Thermal Power Generation Issue 4, (2017)
- 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： TK16
- Published Online：26 April 2017，
  
  Published：2017
- 稿件说明：
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YANG Yumeng, LIU Jianzhong, HE Xiang, et al. esearch status of drying and crushing characteristics of lignite[J]. Thermal power generation, 2017, (4).
DOI：

YANG Yumeng, LIU Jianzhong, HE Xiang, et al. esearch status of drying and crushing characteristics of lignite[J]. Thermal power generation, 2017, (4). DOI：

摘要

为降低褐煤在磨矿过程中的能耗，通过综述前人的成果，指出影响褐煤可磨性的主要因素有煤样的水分含量、岩相成分及成煤条件等。其中褐煤可磨性差的主要原因是水分含量高，煤样的水分含量越高，煤的可磨性越低，增加褐煤可磨性最简单的手段就是对其进行干燥脱水。褐煤干燥过程中煤孔隙结构和比表面积会发生变化。水分析出产生裂隙是褐煤可磨性增大的机理。在此基础上比较了采用普通的外热源干燥法和微波干燥法在增加褐煤可磨性方面的情况。微波干燥技术具有干燥速率快、干燥时间短、能量利用效率高等优点。最后对煤可磨性的评价指标进行了讨论，指出了哈式可磨性指数的局限性，介绍了基于分形等理论的新的可磨性评价指标。

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