Citation: CHEN Fan-min, WANG Jia-rui, ZHAO Bing, LI Xiao-jiang, QIN Tao. Effect of mineral form in coal on combustion characteristics and fusibility of coal ash[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(1): 27-33. shu

Effect of mineral form in coal on combustion characteristics and fusibility of coal ash

1.
Hua Dian Electric Power Research Institute, Hangzhou 310030, China

Corresponding author: WANG Jia-rui,
Received Date: 31 July 2014
Available Online: 17 October 2014
Fund Project: 国家科技部国际科技合作项目(2013DFG61490) (2013DFG61490) 浙江省钱江人才项目(2013R10080). (2013R10080)

The existence form of minerals in Wucaiwan(WCW) coal were studied by extraction, XRD, SEM-EDX and ICP-OES. The influences of different forms of mineral on the combustion characteristics and the fusibility of ash were evaluated. The results indicate that the original minerals in WCW coal mainly include calcite, anhydrite, kaolinite, quartz and pyrite. The modes of occurrence of sodium in WCW coal are mainly in the form of water-soluble sodium. The organic bound sodium, magnesium and calcium can promote the combustion of coal to a certain extent. The fusibility of WCW coal ash is mainly influenced by the mol ratio of iron to calcium. The ash melting points decreases with increasing the Fe₂O₃/CaO mol ratio.
- Wucaiwan coal,
- existence form,
- combustion characteristic,
- fusibility of ash
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