Mineral transformation during Zhundong coal combustion by CCSEM

FAN Bin; YU Dunxi; ZENG Xianpeng; LÜ Weizhi; WU Jianqun; XU Minghou

doi:10.11949/j.issn.0438-1157.20151438

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Mineral transformation during Zhundong coal combustion by CCSEM

更新时间：2025-12-10

- Mineral transformation during Zhundong coal combustion by CCSEM
- CIESC Journal Issue 5, Pages: 2117-2123(2016)
- 作者机构：
  
  1. 华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074
  2. 景德镇陶瓷学院材料科学与工程学院,江西,景德镇,333403
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151438
  CLC： K24
- Online First：05 May 2016，
  
  Published：05 May 2016
- 稿件说明：
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FAN Bin, YU Dunxi, ZENG Xianpeng, et al. Mineral transformation during Zhundong coal combustion by CCSEM[J]. CIESC Journal, 2016, (5): 2117-2123.
DOI：

FAN Bin, YU Dunxi, ZENG Xianpeng, et al. Mineral transformation during Zhundong coal combustion by CCSEM[J]. CIESC Journal, 2016, (5): 2117-2123. DOI： 10.11949/j.issn.0438-1157.20151438.

摘要

在沉降炉中进行了准东煤的燃烧实验

利用计算机控制扫描电镜技术(computer controlled scanning electron microscopy

CCSEM)研究了煤中矿物质的转化行为。研究表明煤中主要矿物为方解石、高岭石、含铁类物质以及未分类矿物

燃烧后灰中石英、铁的氧化物、白云石的含量急剧增加

未分类矿物和方解石的含量下降。同时对3种重要致渣元素Na、Fe、Ca在燃烧前后的矿物转化行为及颗粒粒径分布进行了详细研究。

Abstract

The mineralogy of Zhundong coal and its combustion-generated particles were characterized in detail by computer controlled scanning electron microscopy (CCSEM). The experiment was done on a lab-scale drop tube furnace. The results showed that there were calcite

kaolinite

pyrite

pyrrhotite

oxidized pyrrhotite and unclassified minerals in Zhundong coal. The mass fraction of quartz

iron oxide and dolimite increased sharply

while the mass fraction of calcite and unclassified minerals decreased. Also

the behaviors of Na

Fe and Ca as the important elements to the ash deposition

and their particle size distributions were investigated.

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