B<sub>2</sub>O<sub>3</sub>对高铝低镁渣稳定性影响研究

郭江; 李荣

doi:10.3969/j.issn.1000-6532.2022.01.020

B₂O₃对高铝低镁渣稳定性影响研究

郭江,
李荣

济源职业技术学院冶金与化学工程系, 河南　济源　459000

基金项目: 河南省高等学校青年骨干教师资助计划项目（2018GGJS-278）

详细信息

作者简介: 郭江(1979-),男,副教授,主要研究方向为冶金新材料新技术

中图分类号: TD989

收稿日期: 2020-04-03

修回日期: 2020-05-08

刊出日期: 2022-02-25

Effect of B₂O₃ on High Aluminum Low Magnesium Slag Stability 　

Guo Jiang,
Li Rong

Jiyuan Vocational and Technical College Department of Metallurgical and Chemical Engineering, Jiyuan, Henan, China

Received Date: 03 April 2020

Revised Date: 08 May 2020

Publish Date: 25 February 2022

摘要

摘要:
为了明确B₂O₃对高铝低镁渣稳定性的影响，基于现场高炉渣的实际成分，通过熔体物性测定仪、Factsage软件、XPS光谱分析了B₂O₃对炉渣粘度和炉渣微观结构的影响。结果表明：随着B₂O₃含量的增加，炉渣粘度降低；当炉渣温度低于1360℃时，炉渣随着B₂O₃的增加稳定性增强；炉渣温度为1216℃， B₂O₃质量分数2.0%时，炉渣的稳定性最好。随着B₂O₃含量的增加，炉渣的液相区逐渐向MgO的区域扩大, B₂O₃的加入不仅改善了MgO含量过高引起的炉渣难熔现象，同时提高了炉渣在二元碱度波动时的稳定性。
- B₂O₃ /
- 高铝低镁渣 /
- 稳定性 /
- 影响
Abstract:
In order to clarify the impact mechanisms of B₂O₃ on the stability of high aluminum and low magnesium slag, based on the actual composition of blast furnace slag in the field, the viscosity and microstructure of slag were investigated by the high-temperature melt properties tester, Factsage software and XPS spectroscopy. The results showed that slag viscosity decreases with the increase of B₂O₃ content and the stability of slag increases with the increase of B₂O₃ when the slag temperature is lower than 1360℃.The slag stability is the best when the slag temperature is 1216℃ and the content of B₂O₃ is 2.0%. The liquid region of slag gradually expands to the MgO region with the increase of B₂O₃ content, The addition of B₂O₃ not only improves the refractory phenomenon of slag caused by excessive MgO content, but also improves the stability of slag when the binary alkalinity fluctuates.
- B₂O₃ /
- High aluminum low magnesium slag /
- Stability /
- Effect

HTML全文

图 1 不同B₂O₃含量的炉渣粘度—温度曲线

Figure 1.

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图 2 炉渣熔化性温度与渣中B₂O₃含量的关系

Figure 2.

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图 3 不同B₂O₃含量的CaO-SiO₂-MgO-Al₂O₃-B₂O₃五元渣系

Figure 3.

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图 4 O⁰、O^-和O^2-的摩尔相对含量与渣中B₂O₃关系

Figure 4.

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表 1 高炉现场渣成分/%

Table 1. Actual composition of blast furnace slag in the field

Al₂O₃ MgO CaO SiO₂ TiO₂ S

16.1 7.5 38.8 33.2 0.9 0.8

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表 2 实验渣样组成

Table 2. Chemical constituents of test slags

式样编号 0 1 2 3 4 5 6

B₂O₃含量/% 0 0.1 0.2 0.5 0.8 1.0 2.0
现场渣含量/% 100 99.9 99.8 99.5 99.2 99.0 98.0

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