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Action Mechanism of Pore Structure of Tabular Alumina in Corrosion Environment of Ladle Slag with Different Basicities
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Jiuhong MA1, Huizhong ZHAO1, Jun YU1, Han ZHANG1, Liqiang TAN2, Yi ZHAO3, Jian HE4
Journal of the Chinese Ceramic Society | 2022, 50(12) : 3284 - 3292
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Journal of the Chinese Ceramic Society | 2022, 50(12): 3284-3292
• Research Articles •
Action Mechanism of Pore Structure of Tabular Alumina in Corrosion Environment of Ladle Slag with Different Basicities
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Jiuhong MA1, Huizhong ZHAO1, Jun YU1, Han ZHANG1, Liqiang TAN2, Yi ZHAO3, Jian HE4
Affiliations
  • 1.Wuhan University of Science & Technology, The State Key Laboratory of Refractory and Metallurgy, Wuhan 430081, China
  • 2.Zhejiang Fuziling Special Fire-resistant Company Limited, Huzhou 313108, Zhejiang, China
  • 3.Zhejiang Zili Advanced Materials Company Limited, Shaoxing 312300, Zhejiang, China
  • 4.Jiangsu Jingxin New Materials Company Limited, Yangzhou 225265, Jiangsu, China

    • MA Jiuhong (1996-), male, Doctoral candidate. E-mail:

About Author:

MA Jiuhong (1996-), male, Doctoral candidate. E-mail:

Published: 2022-12-20 doi: 10.14062/j.issn.0454-5648.20220408
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To explore the service performance difference of tabular alumina from different sources, the longevity application of refractory products can be realized through the targeted selection of raw materials. In this paper, three types of tabular alumina aggregates with different microstructures were selected for corrosion tests of ladle slag with different basicities. The influence of microstructure on the interface reaction of tabular alumina aggregate to resist slag erosion was investigated, and the dominant pore structure and action mechanism of tabular alumina aggregate under a high basicity and a low basicity environment were analyzed. The results show that the number of cluster porosities is directly proportional to the amount of alumina dissolved in the erosion process. Under high basicity conditions (i.e., the mass ratio of CaO to SiO2 is greater than 4), the composite lamellar structure of CA2+CA6 can be formed at the slag-material interface, which plays a certain protective role. The thickness of composite layer is inversely proportional to the number of cluster porosities. Under the condition of a low basicity (i.e., the mass ratio of CaO to SiO2 is approximately 1), the cluster pore structure leads to the formation of massive fine CA6 grains, and the erosion resistance is poor. However, a small amount of pore cluster structure leads to the formation of CA6 deposition layer on the aggregate surface and the formation of larger-sized CA6 crystal bridging regions, which can resist the slag erosion.

tabular alumina  /  pore structure  /  ladle slag  /  erosion mechanism
马九宏, 赵惠忠, 余俊, 张寒, 谈利强, 赵义, 何健. 不同碱度钢包渣模拟环境下板状刚玉孔隙结构的抗侵蚀作用. 硅酸盐学报, 2022 , 50 (12) : 3284 -3292 . DOI: 10.14062/j.issn.0454-5648.20220408
Jiuhong MA, Huizhong ZHAO, Jun YU, Han ZHANG, Liqiang TAN, Yi ZHAO, Jian HE. Action Mechanism of Pore Structure of Tabular Alumina in Corrosion Environment of Ladle Slag with Different Basicities[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (12) : 3284 -3292 . DOI: 10.14062/j.issn.0454-5648.20220408
Appendix
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Year 2022 volume 50 Issue 12
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Article Info
doi: 10.14062/j.issn.0454-5648.20220408
  • Receive Date：2022-05-17
  • Online Date：2026-10-20
  • Published：2022-12-20
Article Data
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History
  • Received：2022-05-17
  • Revised：2022-06-04
Funding
Affiliations
    1.Wuhan University of Science & Technology, The State Key Laboratory of Refractory and Metallurgy, Wuhan 430081, China
    2.Zhejiang Fuziling Special Fire-resistant Company Limited, Huzhou 313108, Zhejiang, China
    3.Zhejiang Zili Advanced Materials Company Limited, Shaoxing 312300, Zhejiang, China
    4.Jiangsu Jingxin New Materials Company Limited, Yangzhou 225265, Jiangsu, China

Corresponding:

ZHAO Huizhong (1961-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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