骨料种类对铁水包用Al2O3-SiC-C砖性能的影响

doi:10.3969/j.issn.1001-1935.2024.01.004

耐火材料 ›› 2024, Vol. 58 ›› Issue (1): 19-24.DOI: 10.3969/j.issn.1001-1935.2024.01.004

骨料种类对铁水包用Al₂O₃-SiC-C砖性能的影响

高东升, 聂建华, 蔡曼菲, 梁永和, 张晓存

武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉 430081

收稿日期:2023-04-07 出版日期:2024-02-15 发布日期:2024-02-28
作者简介:高东升:男,1999年生,硕士研究生。E-mail:2170697970@qq.com
基金资助:
国家自然科学基金联合基金重点项目(U21A2058)。

Effect of aggregate types on properties of Al₂O₃-SiC-C bricks for iron ladles

Gao Dongsheng, Nie Jianhua, Cai Manfei, Liang Yonghe, Zhang Xiaocun

First author's address: The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Received:2023-04-07 Online:2024-02-15 Published:2024-02-28

摘要/Abstract

摘要： 骨料作为耐火材料的重要组成部分,决定着材料的各项性能。分别以粒度均为5～3、3～1和≤1 mm的高铝矾土、电熔棕刚玉、板状刚玉为骨料,以电熔白刚玉(≤0.045 mm)、SiC(≤0.075 mm)、活性α-Al₂O₃微粉(≤0.045 mm)和鳞片石墨(≤0.15 mm)等为基质,以热固性酚醛树脂为结合剂制备了Al₂O₃-SiC-C砖,研究了骨料种类(高铝矾土、电熔棕刚玉、板状刚玉)对Al₂O₃-SiC-C砖常温力学性能、高温力学性能和抗渣性能的影响。结果表明:以板状刚玉为骨料时,由于其较高的致密度和较低的杂质含量,使得Al₂O₃-SiC-C砖具有最优的高温力学性能和抗渣性能;以高铝矾土为骨料时,由于其较高的气孔率和杂质含量,导致试样高温力学性能和抗渣性最差。

关键词: 高铝矾土, 电熔棕刚玉, 板状刚玉, Al₂O₃-SiC-C砖

Abstract: As an important part of refractory materials,aggregates determine the properties of materials.Al₂O₃-SiC-C bricks were prepared using bauxite,brown fused corundum or tabular corundum with particle sizes of 5-3,3-1 and ≤1 mm as aggregates,white fused corundum (≤0.045 mm),SiC (≤0.075 mm),active α-Al₂O₃ powder (≤0.045 mm) and flake graphite (≤0.15 mm) as matrix,and thermosetting phenolic resin as the binder.The effects of the three aggregates on the cold and hot mechanical properties as well as the slag resistance of Al₂O₃-SiC-C brick were studied.The results show that the Al₂O₃-SiC-C bricks has the best hot mechanical properties and slag resistance when using tabular corundum as aggregates due to its higher density and lower impurity phase contents;and when bauxite is used as aggregates,the hot mechanical properties and slag resistance of the brick are worst due to the high porosity and impurity contents of bauxite.

Key words: bauxite, brown fused corundum, tabular corundum, Al₂O₃-SiC-C brick

中图分类号:

TQ175

高东升, 聂建华, 蔡曼菲, 梁永和, 张晓存. 骨料种类对铁水包用Al₂O₃-SiC-C砖性能的影响[J]. 耐火材料, 2024, 58(1): 19-24.

Gao Dongsheng, Nie Jianhua, Cai Manfei, Liang Yonghe, Zhang Xiaocun. Effect of aggregate types on properties of Al₂O₃-SiC-C bricks for iron ladles[J]. Refractories, 2024, 58(1): 19-24.

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骨料种类对铁水包用Al₂O₃-SiC-C砖性能的影响

Effect of aggregate types on properties of Al₂O₃-SiC-C bricks for iron ladles

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