不同活性铁炭团块对高炉混合炉料软熔降性能的影响机理

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2022-11-06 DOI:10.1080/03019233.2022.2138168

Jiwei Bao, M. Chu, Zhenggen Liu, Dong Han, Jun Guo, Lifeng Zhang

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引用次数: 1

摘要

铁碳团聚体在高炉上的应用被认为是一种低碳炼铁的创新技术。本文揭示了不同反应性ICAs对BF混合料软化熔滴性能的影响机理。结果表明，在含铁炉料中掺入ICA能有效改善混合炉料的软化熔融性能，当ICA的铁矿石配比为20%～30%时，改善效果最好。其影响机理为：（1）ICA与含铁炉料的还原具有耦合作用，可促进含铁炉料还原，提高混合炉料的软化熔融性能。（2） ICA能促进铁水碳化，降低初渣粘度，改善渣铁的滴落性能。（3） ICA可以支撑上料床骨架，使上料间隔开，从而提高上料床的透气性。

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Influence mechanism of different reactive Iron Carbon Agglomerates on softening–melting–dropping properties of BF mixed burdens

ABSTRACT The application of iron carbon agglomerates (ICA) in blast furnace (BF) is considered to be an innovative technology of low-carbon ironmaking. In this paper, the influence mechanism of different reactive ICAs on softening-melting-dropping properties of BF mixed burdens was revealed. The results show that mixing ICA in the ferrous burdens can effectively improve softening-melting dropping properties of mixed burdens and the improvement effect is the best when the iron ore ratio of ICA is 20%~30%. The influence mechanism is: (1) ICA has a coupling effect with the reduction of ferrous burdens, which can promote reduction of ferrous burdens and improve softening-melting performance of mixed burdens. (2) ICA can promote the molten iron carbonization and reduce the viscosity of primary slag, which can improve dropping performance of slag-iron. (3) ICA can support the skeleton of burden bed and space the burdens, which can improve gas permeability of burden bed.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.