Thermodynamic analysis and formula optimization of steel slag-based ceramic materials by FACTsage software
来源期刊：International Journal of Minerals Metallurgy and Materials2013年第4期
论文作者：Xian-bin Ai Hao Bai Li-hua Zhao Da-qiang Cang Qi Tang
文章页码：379 - 385
摘 要：Using steel slag as a main raw material of ceramics is considered as a high value-added way. However, the relationship among the initial composition, ceramic microstructure, and macroscopic properties requires further study. In this paper, a series of ceramics with different slag ratios （0-70wt%） were designed, and the software FACTsage was introduced to simulate the formation of crystalline phases. The simulation results indicate that mullite is generated but drastically reduced at the slag ratios of 0-25wt%, and anorthite is the dominant crystalline phase in the slag content of 25wt%-45wt%. When the slag ratio is above 45wt%, pyroxene is generated more than anorthite. This is because increasing magnesium can promote the formation of pyroxene. Then, the formula with a slag content of 40wt% was selected and optimized. X-ray diffraction results were good consistent with the simulation results. Finally, the water absorption and bending strength of optimized samples were measured.
Xian-bin Ai1,2，Hao Bai1,2，Li-hua Zhao1,2，Da-qiang Cang1,2，Qi Tang3
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing3. Foshan Oceano Ceramic Co., Ltd.
摘 要：Using steel slag as a main raw material of ceramics is considered as a high value-added way. However, the relationship among the initial composition, ceramic microstructure, and macroscopic properties requires further study. In this paper, a series of ceramics with different slag ratios （0-70wt%） were designed, and the software FACTsage was introduced to simulate the formation of crystalline phases. The simulation results indicate that mullite is generated but drastically reduced at the slag ratios of 0-25wt%, and anorthite is the dominant crystalline phase in the slag content of 25wt%-45wt%. When the slag ratio is above 45wt%, pyroxene is generated more than anorthite. This is because increasing magnesium can promote the formation of pyroxene. Then, the formula with a slag content of 40wt% was selected and optimized. X-ray diffraction results were good consistent with the simulation results. Finally, the water absorption and bending strength of optimized samples were measured.
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