Effect of melt structure property on Al2O3 activity in CaO-SiO2-Al2O3-MgO system for blast furnace slag with different Al2O3 content

IF 1.1 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI:10.1051/metal/2021076

Hu Xinguang, F. Shen, Hai-yan Zheng, Yongchun Guo, Jiang Xin, Gao Qiangjian

引用次数: 0

Abstract

With the shortage of high-quality iron ore resources, more and more attention has been paid to the blast furnace (BF) smelting of Al2O3-rich iron ore in recent years. Thus, investigation on the thermodynamics property of Al2O3-rich blast furnace slag was inevitable in order to produce high quality hot metal with low cost. In this paper, based on the determination of Al2O3 activity by reference slag method at 1873 K in previous study, the effect of the mechanism of slag structure property on Al2O3 activity in CaO-SiO2-MgO-Al2O3 system was discussed by Raman spectra analysis. It was found that the [AlO4] structure was polymerized and [SiO4] structure was depolymerized with the Al2O3 content increasing from 10 wt.% to 18 wt.%, which caused the Al2O3 activity increased.

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不同Al2O3含量的炉渣CaO-SiO2-Al2O3-MgO体系熔体结构性能对Al2O3活性的影响

随着优质铁矿资源的紧缺，高炉冶炼富al2o3铁矿越来越受到人们的重视。因此，研究富al2o3高炉渣的热力学性质是生产高质量、低成本铁水的必然要求。本文在前人研究1873 K时参考渣法测定Al2O3活性的基础上，利用拉曼光谱分析探讨了CaO-SiO2-MgO-Al2O3体系中渣结构性质对Al2O3活性的影响机理。Al2O3含量从10 wt开始增加，[AlO4]结构发生聚合，[SiO4]结构发生解聚合。%至18磅。%，使Al2O3活性增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.