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| Effect of moisture of Shendong bituminous coal on its blast furnace injection performance |
| DI Chuan-geng1, WANG Zhen-fei1, ZHANG Jian-liang2, WANG Guang-wei2, ZHANG Nan2, LIANG Wang2 |
1.Coal Distribution Center, Shendong Coal Group, National Energy Group, Yulin 719315, Shaanxi, China;
2.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract Shendong bituminous coal has the characteristics of high moisture content, which has different effects on its production, transportation, storage or application in blast furnace injection. In view of this characteristic of Shendong bituminous coal, five representative high-water Shendong bituminous coal from different mining areas were selected to explore the effects of moisture on its grindability under the condition of different drying time, and the blast furnace coal injection simulation test device was used to study the variation trend of the combustion rate with the moisture content. The water loss mass fraction under different conditions to the analytical moisture content was defined as the water loss rate to explore the relationship between grindability and burning rate relates and the water loss rate. It could be concluded that when the water loss rate increased, the coal grindability and combustion rate both showed an upward trend. With the increase of drying time, the grindability increased slowly. With the increase of water loss, the combustion rate and combustion rate showed an approximately linear growth.
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Received: 13 May 2019
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2020, Vol. 30 
