Chen Shaosheng, Zhang Yuzhu, Long Yue, Ren Qianqian. Effect of Different Cooling Methods on Crystallization of Blast Furnace Slag[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(6): 72-75. doi: 10.7513/j.issn.1004-7638.2016.06.013
Citation:
Chen Shaosheng, Zhang Yuzhu, Long Yue, Ren Qianqian. Effect of Different Cooling Methods on Crystallization of Blast Furnace Slag[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(6): 72-75. doi: 10.7513/j.issn.1004-7638.2016.06.013
Chen Shaosheng, Zhang Yuzhu, Long Yue, Ren Qianqian. Effect of Different Cooling Methods on Crystallization of Blast Furnace Slag[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(6): 72-75. doi: 10.7513/j.issn.1004-7638.2016.06.013
Citation:
Chen Shaosheng, Zhang Yuzhu, Long Yue, Ren Qianqian. Effect of Different Cooling Methods on Crystallization of Blast Furnace Slag[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(6): 72-75. doi: 10.7513/j.issn.1004-7638.2016.06.013
1. School of Metallurgy and Energy, North China University of Science and Technology, Ministry of Education Key Laboratory of Modern Metallurgical Technology, Tangshan 063009, Hebei, China;
2. School of Materials & Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China
The crystallization behaviors of blast furnace slag under different cooling modes including fur-nace cooling,air cooling and water cooling were investigated by Fact Sage simulation software,XRD and SEM,to explore the influence of cooling modes on the crystallization quantity of blast furnace slag.The re-sults show that the crystallization of the slag occurs at 1 425.9℃ with melilite precipitated and is comple-ted at 1 268.5℃,with 157.4℃ of temperature range.Due to the difference in heat exchange rate,the crystallization of blast furnace slag is obviously affected by the cooling methods at the same cooling tem-perature.The highest degree of crystallization can be obtained in the slag with furnace cooling mode,while the crystallization amount distinctly decreases in the slag by air cooling with the crystals and amorphous materials coexisted. The akermanite and gehlenite are the crystals precipitated in both of the cooling modes.With the water cooling method,amorphous materials are formed under rapid cooling rate.
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