Citation: XU Rong-sheng, LIN Xiong-chao, WANG Yong-gang. Morphological and interfacial characterization of molten slags on the refractory surface[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(2): 138-144. shu

Morphological and interfacial characterization of molten slags on the refractory surface

1.
School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

Corresponding author: LIN Xiong-chao, WANG Yong-gang,
Received Date: 14 October 2014
Available Online: 23 December 2014
Fund Project: 国家自然科学基金(21406261) (21406261) 北京市优秀人才资助(2013D009014000001)。 (2013D009014000001)

The interfacial properties between three types of coal slags (A, J1 and J2 with various base/acid ratio) and two refractory materials (mullite and corundum) were studied. The results indicate that the slag A has good wettability on both of refractory materials. While, the slags J1/J2 have experienced the process from incomplete wetting to whole wetting. The contact angles decrease with increasing of interface width of slag and refractory materials (S-R). The contact angles of J1 on mullite decrease with increasing of inclination angles from deformation temperature to 1 520 ℃, but significantly increase when the inclination angle is 20°. The SEM-EDS analysis show that the quantity of slag A permeating into the refractory material is more than that of J1 slags because of interfacial reaction. The infusion and acid-base reactions are the key factors for the refractory corrosion.
- refractory material,
- slag,
- erosion,
- interface
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沈阳化工大学材料科学与工程学院沈阳 110142