MgO-ZrO2-MgAl2O4质耐火材料性能的研究

doi:10.3969/j.issn.1001-1935.2025.01.005

耐火材料 ›› 2025, Vol. 59 ›› Issue (1): 25-30.DOI: 10.3969/j.issn.1001-1935.2025.01.005

MgO-ZrO₂-MgAl₂O₄质耐火材料性能的研究

刘中飞¹⁾, 吴锋¹⁾, 梁效诚¹⁾, 孙家朐¹⁾, 裴宇航¹⁾, 罗旭东^1,2), 袁其琛³⁾

1)辽宁科技大学材料与冶金学院辽宁鞍山 114051
2)辽宁科技学院辽宁本溪 117004
3)鞍山市安力耐火材料有限公司辽宁鞍山 114011

收稿日期:2024-06-05 出版日期:2025-02-15 发布日期:2025-02-27
通讯作者: 吴锋,男,1976年生,博士,副教授。E-mail:wufeng@ustl.edu.cn
作者简介:刘中飞:男,1999年生,硕士研究生。E-mail:liuzhongfei@ustl.edu.cn
基金资助:
* 国家自然科学基金资助项目(U20A20239)。

Properties of MgO-ZrO₂-MgAl₂O₄ refractories

Liu Zhongfei, Wu Feng, Liang Xiaocheng, Sun Jiaqu, Pei Yuhang, Luo Xudong, Yuan Qichen

First author’s address:School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China

Received:2024-06-05 Online:2025-02-15 Published:2025-02-27

摘要/Abstract

摘要： 为了克服RH精炼炉用耐火材料苛刻的使用环境,以特级菱镁矿、脱硅锆和镁铝尖晶石为原料预合成镁锆尖晶石,然后与不同粒级的电熔镁砂混合、成型、烘干、煅烧制备出MgO-ZrO₂-MgAl₂O₄质耐火材料。研究了预合成镁锆尖晶石加入量(加入质量分数分别为10%、20%、30%)对MgO-ZrO₂-MgAl₂O₄质耐火材料性能的影响。结果表明:1)随着预合成镁锆尖晶石加入量的增加,MgO-ZrO₂-MgAl₂O₄质耐火材料的体积密度逐渐增大,显气孔率、线收缩率和常温抗折强度逐渐减小,抗渗透性逐渐提高,而抗侵蚀性略微降低。2)当预合成镁锆尖晶石加入量(w)为20%时,MgO-ZrO₂-MgAl₂O₄质耐火材料具有较低的线膨胀系数,并表现出最优的断裂韧性和抗热震性。综合来看,预合成镁锆尖晶石的最佳加入量(w)为20%。

关键词: RH精炼炉, MgO-ZrO₂-MgAl₂O₄, 预合成镁锆尖晶石, 抗热震性, 线膨胀系数

Abstract: To overcome the harsh operating environment of refractories used in RH refining furnaces,magnesia-zirconia spinel was pre-synthesized using high-grade magnesite,desilicated zirconia,and MgAl₂O₄ as raw materials.Then MgO-ZrO₂-MgAl₂O₄ refractories were prepared by mixing the pre-synthesized spinel with fused magnesia of different particle sizes,molding,drying,and calcining.The effect of the pre-synthesized magnesia-zirconia spinel addition (10%,20%,and 30%,by mass) on the properties of the MgO-ZrO₂-MgAl₂O₄ refractories was studied.The results show that:(1)with the increase of the pre-synthesized magnesia-zirconia spinel addition,the bulk density of MgO-ZrO₂-MgAl₂O₄ refractories gradually increases,the apparent porosity,the linear shrinkage rate,and the cold modulus of rupture decrease gradually,the permeation resistance is improved gradually,and the corrosion resistance slightly decreases;(2)when the pre-synthesized magnesia-zirconia spinel addition is 20%,MgO-ZrO₂-MgAl₂O₄ refractories have a lower linear expansion coefficient and exhibit optimal fracture toughness and thermal shock resistance.Overall,the optimal addition of the pre-synthesized magnesia-zirconia spinel is 20%.

Key words: RH refining furnaces, MgO-ZrO₂-MgAl₂O₄, pre-synthesized magnesia-zirconia spinel, thermal shock resistance, linear expansion coefficient

中图分类号:

TQ175

刘中飞, 吴锋, 梁效诚, 孙家朐, 裴宇航, 罗旭东, 袁其琛. MgO-ZrO₂-MgAl₂O₄质耐火材料性能的研究[J]. 耐火材料, 2025, 59(1): 25-30.

Liu Zhongfei, Wu Feng, Liang Xiaocheng, Sun Jiaqu, Pei Yuhang, Luo Xudong, Yuan Qichen. Properties of MgO-ZrO₂-MgAl₂O₄ refractories[J]. Refractories, 2025, 59(1): 25-30.

参考文献

[1] TONG S H,ZHAO J Z,ZHANG Y C,et al.Corrosion mechanism of Al-MgO-MgAl₂O₄ refractories in RH refining furnace during production of rail steel[J].Ceramics International,2020,46(8):10089-10095.
[2] SHE C J,PENG K Y,SUN Y,et al.Kinetic model of desulfurization during RH refining process[J].Metallurgical and Materials Transactions B,2024,55(1):92-104.
[3] ZHAO J L,FENG D,FAN B B,et al.High-temperature mechanical behavior and thermal shock resistance of eco-friendly periclase-Mg_1.08Al_1.84Ti_0.08O₄ spinel refractories used in RH degassing process[J].Journal of the European Ceramic Society,2024,44(4):2638-2650.
[4] GUO M X,JONES P T,PARADA S,et al.Degradation mechanisms of magnesia-chromite refractories by high-alumina stainless steel slags under vacuum conditions[J].Journal of the European Ceramic Society,2006,26(16):3831-3843.
[5] CHEN L G,GUO M X,SHI H Y,et al.The influence of ZnO in fayalite slag on the degradation of magnesia-chromite refractories during secondary Cu smelting[J].Journal of the European Ceramic Society,2015,35(9):2641-2650.
[6] XU T T,XU Y B,LI Y W,et al.Corrosion mechanisms of magne-sia-chrome refractories in copper slag and concurrent formation of hexavalent chromium[J].Journal of Alloys and Compounds,2019,786:306-313.
[7] JIN E D,ZOU C,DING D H,et al.Enhanced mechanical properties and thermal shock resistance of magnesia refractories via in situ formation of tetragonal zirconia[J].Ceramics International,2024,50(9):14968-14979.
[8] 刘中飞,冯雨,梁效诚,等.预合成镁锆砂和煅烧温度对镁锆质材料性能的影响[J].耐火材料,2024,58(2):110-115.
[9] AKSEL C,RAND B,RILEY F L,et al.Mechanical properties of magnesia-spinel composites[J].Journal of the European Ceramic Society,2002,22(5):745-754.
[10] 郭海珠,余森.实用耐火原料手册[M].北京:中国建材工业出版社,2000.
[11] PATIL R N,SUBBARAO E C.Axial thermal expansion of ZrO₂ and HfO₂ in the range room temperature to 1 400 ℃[J].Journal of Applied Crystallography,2010,2(6):281-288.
[12] 张海萍,汪厚植,顾华志,等.提高镁质浇注料抗热震性的研究[J].耐火材料,2002,36(1):53-54.

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MgO-ZrO₂-MgAl₂O₄质耐火材料性能的研究

Properties of MgO-ZrO₂-MgAl₂O₄ refractories

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