Open AccessStudy on Preparation of Ceramsite from Shale Slag and Its Application
Author(s) -
Chen Xu,
Xinci Deng
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/744/1/012026
Subject(s) - oil shale , raw material , fly ash , slag (welding) , materials science , sintering , absorption of water , gangue , lime , metallurgy , environmental science , waste management , composite material , engineering , chemistry , organic chemistry
This paper studies the proportion of raw materials and process system for firing shale slag ceramsite. The raw materials and raw material ratio of the shale slag ceramsite were determined by the composition analysis of the shale slag; Through basic experiments, it is concluded that when the proportion of raw materials is shale slag: coal gangue: fly ash: expansion agent = 65 : 16 : 9 : 10. Through optimization analysis, when the tube pressure strength is used as the evaluation index, the optimal plan A2B1C2, the bulk density as the evaluation index, the optimal plan A1B3C2, and the water absorption rate as the evaluation index, the optimal plan A3B1C3. Conclusion: The best sintering system for shale slag granule firing is preheating temperature 50°C. heating time 20min, holding time 15min, heating to 1100°C, heating for 40min, and finally holding for 20min. Through the optimization analysis of the analysis and analysis of variance results, it is known that the firing temperature has the most significant effect on the ceramsite performance.