Fe2O3对转炉用镁质水系大面料性能的影响

doi:10.3969/j.issn.1001-1935.2026.02.009

耐火材料 ›› 2026, Vol. 60 ›› Issue (2): 136-140.DOI: 10.3969/j.issn.1001-1935.2026.02.009

Fe₂O₃对转炉用镁质水系大面料性能的影响

肖扬武¹⁾, 马骁一²⁾, 熊继全²⁾, 张晓存³⁾, 聂建华³⁾, 梁永和³⁾, 鞠茂奇^2,3), 孙惠东²⁾

1)首钢水钢钢铁(集团)有限责任公司炼铁事业部贵州六盘水 553028
2)中冶武汉冶金建筑研究院有限公司湖北武汉 430081
3)武汉科技大学先进耐火材料全国重点实验室湖北武汉 430081

收稿日期:2025-07-01 出版日期:2026-04-15 发布日期:2026-04-15
通讯作者: 鞠茂奇,男,1995年生,博士,高级工程师。E-mail:mcc_maoqiju@126.com
作者简介:肖扬武:男,1974年生,高级工程师。E-mail:798615212@qq.com
基金资助:
国家自然科学基金联合基金重点项目(U21A2058);中国五矿集团有限公司青年科技基金(2024QNJJA05)。

Effect of Fe₂O₃ on performance of magnesia water-based gunning mix for converter large area

Xiao Yangwu, Ma Xiaoyi, Xiong Jiquan, Zhang Xiaocun, Nie Jianhua, Liang Yonghe, Ju Maoqi, Sun Huidong

First author’s address:Ironmaking Division,Shougang Shuigang Iron & Steel (Group) Co.,Ltd.,Liupanshui 553028,Guizhou,China

Received:2025-07-01 Online:2026-04-15 Published:2026-04-15

摘要/Abstract

摘要： 为了改善水系大面料的性能,提高转炉的使用寿命,以电熔镁砂和二氧化硅微粉等为主要原料制备了镁质水系大面料。研究了烧结助剂Fe₂O₃添加量(加入质量分数分别为0、1%、2%、3%)对大面料性能的影响并探明其在大面料体系中的作用机制。结果表明:1)在水系大面料中引入Fe₂O₃促进了MgFe₂O₄的形成,其与MgAl₂O₄结构相似,两者可形成Mg(Fe,Al)₂O₄连续固溶体,引起晶格畸变,加快反应中离子的扩散速率,促进试样烧结;2)Fe₂O₃的加入在试样中与SiO₂生成FeO-SiO₂系硅酸盐,其在1 500 ℃时呈液相,改善烧结过程,加强颗粒与基质间的结合,促进试样致密化;3)由于烧结性能提高,试样的常温物理性能得到改善,烧结时间缩短,但Fe₂O₃加入量过多,试样的线膨胀率较大,导致试样结构疏松,因此Fe₂O₃最佳的添加量为2%(w)。

关键词: 大面料, Fe₂O₃, 常温物理性能, 烧结性能

Abstract: To improve the performance of water-based gunning mix for converter large area and prolong the service life of converters,magnesia water-based gunning mix was prepared with fused magnesia and silica fume as main raw materials.The effects of the sintering aid Fe₂O₃ additions (0,1%,2%,and 3%,by mass) on the properties of the gunning mix were studied,and its action mechanism in the gunning mix was explored.The results show that:(1)the introduction of Fe₂O₃ into the water-based gunning mix promotes the formation of MgFe₂O₄,which has a similar structure to MgAl₂O₄;and a continuous Mg(Fe,Al)₂O₄ solid solution forms between them,inducing lattice distortion,accelerating ion diffusion rate during the reaction,and promoting sample sintering;(2)Fe₂O₃ reacts with SiO₂ in the sample to form FeO-SiO₂,which is present as a liquid phase at 1 500 ℃,improving the sintering process,strengthening the bonding between particles and matrix,and promoting sample densification;(3)owing to the improved sintering performance,the cold physical properties of the samples are improved and the sintering time is shortened;however,excessive Fe₂O₃ leads to a large linear expansion rate of the sample,resulting in a loose structure.Therefore,the optimal addition of Fe₂O₃ is 2%.

Key words: gunning mix, Fe₂O₃, cold physical properties, sintering properties

中图分类号:

TQ175

肖扬武, 马骁一, 熊继全, 张晓存, 聂建华, 梁永和, 鞠茂奇, 孙惠东. Fe₂O₃对转炉用镁质水系大面料性能的影响[J]. 耐火材料, 2026, 60(2): 136-140.

Xiao Yangwu, Ma Xiaoyi, Xiong Jiquan, Zhang Xiaocun, Nie Jianhua, Liang Yonghe, Ju Maoqi, Sun Huidong. Effect of Fe₂O₃ on performance of magnesia water-based gunning mix for converter large area[J]. Refractories, 2026, 60(2): 136-140.

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Fe₂O₃对转炉用镁质水系大面料性能的影响

Effect of Fe₂O₃ on performance of magnesia water-based gunning mix for converter large area

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