Complementation in the composition of steel slag and red mud for preparation of novel ceramics
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第9期
论文作者：Yan-bing Zong Wen-hui Chen Yong Fan Tai-lin Yang Zhao-bo Liu Da-qiang Cang
文章页码：1010 - 1017
摘 要：A method for preparing novel ceramics was developed in this study. Different ratios red muds were added to steel slags to optimize the preparation of novel ceramics by a traditional ceramic preparation process. The sintering mechanism, microstructure, and performance were studied by X-ray diffraction techniques, scanning electron microscopy, and combined experiments of linear shrinkage, water absorption, and flexural strength. The results confirmed that red mud can reduce the volumetric instabilities through the complementarity of red mud and ferroalloy slag. The crystal phases in the ceramics are all pyroxene group minerals, including diopside ferrian, augite, and diopside. The flexural strength of the ceramic that contains 40 wt% red mud and was prepared at the optimal sintering temperature（1140°C） is greater than 93 MPa; its corresponding water absorption is less than 0.05%.
Yan-bing Zong1，Wen-hui Chen1，Yong Fan2,3，Tai-lin Yang1，Zhao-bo Liu1,4，Da-qiang Cang1
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing2. Institute of Iron and Steel Technology, TU Bergakademie Freiberg3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University4. China Nonferrous Engineering and Research Institute (China ENFI Engineering Corporation)
摘 要：A method for preparing novel ceramics was developed in this study. Different ratios red muds were added to steel slags to optimize the preparation of novel ceramics by a traditional ceramic preparation process. The sintering mechanism, microstructure, and performance were studied by X-ray diffraction techniques, scanning electron microscopy, and combined experiments of linear shrinkage, water absorption, and flexural strength. The results confirmed that red mud can reduce the volumetric instabilities through the complementarity of red mud and ferroalloy slag. The crystal phases in the ceramics are all pyroxene group minerals, including diopside ferrian, augite, and diopside. The flexural strength of the ceramic that contains 40 wt% red mud and was prepared at the optimal sintering temperature（1140°C） is greater than 93 MPa; its corresponding water absorption is less than 0.05%.
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