B<sub>2</sub>O<sub>3</sub>对高铝渣稳定性的影响

doi:10.13228/j.boyuan.issn1006-9356.20200303

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摘要为了明确B₂O₃对高Al₂O₃渣稳定性的影响,基于现场高炉渣的实际成分,通过熔体物性测定仪、扫描电镜、红外光谱仪分析了B₂O₃对高Al₂O₃渣黏度和基础玻璃微观结构的影响。结果表明,随着B₂O₃含量的增加,炉渣黏度降低;当炉渣温度低于1 360 ℃时,炉渣随着B₂O₃的增加稳定性增强;炉渣温度为1 216 ℃、B₂O₃质量分数为2.0%时,炉渣的稳定性最好。随着B₂O₃含量的增加,炉渣不断玻璃化,当B₂O₃质量分数为2.0%时,炉渣微观结构完全是玻璃态结构,表现为假性酸性渣的性质;随着B₂O₃含量的增加,[Si-O-Al]键断裂,[AlO₆]八面体结构振动峰增加,炉渣的稳定性越来越好。

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	郭江
	李荣

关键词 ：高炉, B₂O₃, 黏度, 微观结构, 高铝渣, 稳定性

Abstract：In order to clarify the impact mechanisms of B₂O₃ on the stability of high Al₂O₃ slag, based on the actual composition of blast furnace slag in the field, the effect of B₂O₃ on the viscosity and basic glass microstructure of high Al₂O₃ slag were investigated by the high-temperature melt properties tester, scanning electron microscope and infrared spectroscopy. The results showed that slag viscosity decreased with the increase of B₂O₃ content. And the stability of slag increased with the increase of B₂O₃ when the slag temperature was lower than 1 360 ℃. The slag stability was the best when the slag temperature was 1 216 ℃ and the mass fraction of B₂O₃ was 2.0%. The slag was constantly glassy with the increase of B₂O₃ content. The microstructure of slag was glassy and had the properties of pseudo-acidic slag when the mass fraction of B₂O₃ was 2.0%. With increasing B₂O₃ content, the [Si-O-Al] bond fractured and the vibration peak of [AlO₆] octahedral structure increased, the slag stability became better and better.

Key words： BF B₂O₃ viscosity microstructure high aluminous slag stability

收稿日期: 2020-05-23

基金资助:河南省高等学校青年骨干教师计划资助项目(2018GGJS-278)

作者简介: 郭江(1979—), 男, 硕士, 副教授; E-mail: 15660109651@163.com

引用本文:

郭江, 李荣. B₂O₃对高铝渣稳定性的影响[J]. 中国冶金, 2020, 30(12): 18-21. GUO Jiang, LI Rong. Effect of B₂O₃ on high aluminous slag stability[J]. China Metallurgy, 2020, 30(12): 18-21.

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http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20200303 或 http://www.zgyj.ac.cn/CN/Y2020/V30/I12/18

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