Effect of CaO/SiO2 Slag Mass Ratio on Dissolution Rate of Alumina-based Refractory Ceramics

doi:10.19691/j.cnki.1004-4493.2023.01.006

China's Refractories ›› 2023, Vol. 32 ›› Issue (1): 30-34.DOI: 10.19691/j.cnki.1004-4493.2023.01.006

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Effect of CaO/SiO₂ Slag Mass Ratio on Dissolution Rate of Alumina-based Refractory Ceramics

ZENG Fanbo, HUANG Ao^*, WANG Xinlian, LI Shenghao, ZHANG Shuzhe, QU Pengcheng, GU Huazhi

The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

Online:2023-03-15 Published:2023-03-22
Contact: *e-mail: huangao@wust.edu.cn
About author:Zeng Fanbo, born in Hubei Province in 2001. He is an undergraduate as the international talent candidate at the School of Materials and Metallurgy at Wuhan University of Science and Technology. He won the gold medal in school's “Internet<sup>+</sup>” competition and the third prize of National College English competition. His research interests cover interaction between refractories and melts.

Abstract

Abstract: The dissolution of alumina-based refractory ceramics in CaO-Al₂O₃-SiO₂ slag melts was performed based on the in-situ observation system of an ultra-high-temperature laser confocal microscope, and the effect of the CaO/SiO₂ slag mass ratio (C/S ratio) on the dissolution rate of alumina-based refractory ceramics was investigated. The results indicate that the dissolution rate increases with an increase of the C/S ratio and is mainly controlled by diffusion. During the early stage of dissolution, for all C/S ratios, the dissolution process conforms to the classical invariant interface approximation model. During the later stage of dissolution, when the C/S ratio is ≥6, the dissolution process is significantly different from the model above because of the formation of a thick interfacial layer, which can be explained by dissolution kinetics.

Key words: alumina-based refractory ceramics, CaO/SiO₂ mass ratio, dissolution rate, diffusion control, in-situ observation

ZENG Fanbo, HUANG Ao, WANG Xinlian, LI Shenghao, ZHANG Shuzhe, QU Pengcheng, GU Huazhi. Effect of CaO/SiO₂ Slag Mass Ratio on Dissolution Rate of Alumina-based Refractory Ceramics[J]. China's Refractories, 2023, 32(1): 30-34.

References

[1] Li Youqi, Ding Jinxing, Cui Qingyang, Zhao Jizeng.Application of activated alumina powders in corundum castables. China's Refractories, 2019, 28(2): 12-17.
[2] Nicolas Prompt, Evariste Ouedraogo.High temperature mechanical characterisation of an alumina refractory concrete for blast furnace main trough: Part I. General context. Journal of the European Ceramic Society, 2008, 28(15): 2859-2865.
[3] Yuefang Peng, Ao Huang, Shenghao Li, Xinyu Chen, Huazhi Gu.Radical reaction-induced turing pattern corrosion of alumina refractory ceramics with CaO-Al₂O₃-SiO₂-MgO slags. Journal of the European Ceramic Society, 2022, 43(1): 166-172.
[4] Gu Xiaolei, Liu Xinhong, Zhong Xiangchong.Study on corrosion resistance of SiC bonded corundum materials to BF slag. Naihuo Cailiao (Refractories, in Chinese), 2010, 44(1): 41-44.
[5] Feng Li, Xiong Binsheng, Lin Liuzhu, Zhang Jin.Refractory castables of feed wind branch pipe lining on blast furnace. Proceedings of International Symposium on Refractories (ISR' 2007, in Chinese), Beijing, China, 2007: 292-299.
[6] Fu Lvping, Gu Huazhi, Huang Ao, Zou Yongshun, Zhang Meijie.Fabrication of lightweight alumina with nanoscale intracrystalline pores. Journal of the American Ceramic Society, 2020, 103(3): 2262-2271.
[7] Yanzhu Huo, Huazhi Gu, Ao Huang, Beiyue Ma, Liugang Chen, Guangqiang Li, Yawei Li.Characterization and mechanism of dissolution behavior of Al₂O₃/MgO oxides in molten slags. Journal of Iron and Steel Research International, 2022, 29: 1711-1722.
[8] Yongshun Zou, Ao Huang, Huazhi Gu.Novel phenomenon of quasi-volcanic corrosion on the alumina refractory-slag-air interface. Journal of the American Ceramic Society, 2020, 103(11): 6639-6649.
[9] Shenghao Li, Ao Huang, Huazhi Gu, Runfeng Wang, Yongshun Zou, Lvping Fu.Corrosion resistance and anti-reaction mechanism of Al₂O₃-based refractory ceramic under weak static magnetic field. Journal of the American Ceramic Society, 2022, 105(4): 2869-2877.
[10] Li Shenghao, Huang Ao, Gu Huazhi, Zeng Fangbao, Zou Yongshun, Fu Lvping.Visual measurement and characterisation of quasi-volcanic corrosion at alumina ceramic-oxides melt-air interface. Journal of the European Ceramic Society, 2021, 41(16): 400-410.
[11] Chen Sunlin, Yuan Lin, Zeng Dafan, Feng Zhongqi, Sun Jialin, Wang Jiandong, Pan Bo.RH furnace slag resistance comparison of magnesia-zirconia brick and magnesia-chrome oxide brick by rotary slag test. Naihuo Cailiao (Refractories, in Chinese), 2010, 44(5): 341-344.
[12] Liu Guoyan.Study on the damage process and its influencing factors of the refractory material of the refining ladle slag line by rotary impregnation [Dissertation (in Chinese)]. Zhengzhou: Zhengzhou University, 2017.
[13] Li Shenghao, Huang Ao, Gu Huazhi, Yang Pengpeng, Fu Lvping, Yang Shuang.Visualization of slag corrosion process of corundum based refractories. Naihuo Cailiao (Refractories, in Chinese), 2021, 55(5): 410-413.
[14] X. Guo, Z. H. I.Sun, J. Van Dyck, M. Guo, B. Blanpain. In situ observation on lime dissolution in molten metallurgical slags-kinetic aspects. Industrial & Engineering Chemistry Research, 2014, 53(15): 6325-6333.
[15] Stefan Feichtinger, Susanne K.Michelic, Youn-Bae Kang. In situ observation of the dissolution of SiO₂ particles in CaO-Al₂O₃-SiO₂ slags and mathematical analysis of its dissolution pattern. Journal of the American Ceramic Society, 2014, 97(1): 316-325.
[16] Monaghan BJ, Chen L.Dissolution behavior of alumina micro-particles in CaO-SiO₂-Al₂O₃ liquid oxide. Journal of Non-Crystalline Solids, 2004, 347(1-3): 254-261.
[17] Chen Ran, Chen Zhaoping, Xu Yingtie, Zhou Candong, Shu Da.In-situ observation of behaviors of inclusions in bearing steel. Journal of Iron and Steel Research (in Chinese), 2015, 27(12): 48-53.
[18] Young-sang Kim, Ba Huu Dinh, Tan Manh Do, Gyeong-o Kang. Development of thermally enhanced controlled low-strength material incorporating different types of steel-making slag for ground-source heat pump system. Renewable Energy, 2020, 150: 116-127.
[19] Jie Zeng, Chenyang Zhu, Wanlin Wang, Xia Li.In situ observation of the MnS precipitation behavior in high-sulfur microalloyed steel under different cooling rates. Metallurgical and Materials Transactions B, 2020, 51(6): 2522-2531.
[20] Shaowei Zhang, Hamid Reza Rezaie, Hossain Sarpoolaky, William Edward Lee.Alumina dissolution into silicate slag. Journal of the American Ceramic Society, 2000, 83(4): 897-903.
[21] H Sarpoolaky, S Zhang, W. E Lee.Corrosion of high alumina and near stoichiometric spinels in iron-containing silicate slags. Journal of the European Ceramic Society, 2002, 23(2): 293-300.
[22] Junhu Liu, Frederik Verhaeghe, Muxing Guo, Bart Blanpain, Patrick Wollants.In situ observation of the dissolution of spherical alumina particles in CaO-Al₂O₃-SiO₂ melts. Journal of the American Ceramic Society, 2007, 90(12): 3818-3824.
[23] M. Valdez, K. Prapakorn, A. W. Cramb, S. Sridhar.Dissolution of alumina particles in CaO-Al₂O₃-SiO₂-MgO slags. Ironmaking & Steelmaking, 2013, 29(1): 47-52.

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Effect of CaO/SiO₂ Slag Mass Ratio on Dissolution Rate of Alumina-based Refractory Ceramics

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