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Abstract:
The effects of calcination temperature, time and additives on the alkali content of coal-cinder from the catalytic gasification of pulverized anthracite were examined by using the static calcination method in a laboratory high temperature furnace in this study. The results indicated that the optimum calcination temperature and time were respectively 870°C and 30 min, and the optimum dealkalization additive is kaolinite. By adding only 5% kaolinite in the calcination process, the dealkalization rate could be increased to 100%. Most importantly, with analyzing the calcined cinder by X-ray powder diffraction (XRD) and scanning electron microscope (SEM), it was clear that at an appropriate calcination temperature, the activated SiO2 and Al2O3 in alkaline coal-cinder would react with the decomposed fused Na2CO3 to form a new neutral matter nepheline (NaAlSiO4) and other amorphous silicate compounds, causing an obvious reduction of the alkali content in coal-cinder.
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Journal of Chemical Industry and Engineering (China)
ISSN: 0438-1157
CN: 11-1946/TQ
Year: 2006
Issue: 11
Volume: 57
Page: 2616-2623
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
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