Critical analysis of variable atmosphere gaseous reduction of iron oxides pellets

IF 1.7 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Ironmaking & Steelmaking Pub Date : 2023-04-04 DOI:10.1080/03019233.2023.2194732
P. Cavaliere, A. Perrone, D. Marsano
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引用次数: 1

Abstract

ABSTRACT The paper deals with the analyses of the direct reduction kinetics of industrial iron oxide pellets. Various types of pellets were reduced at different temperatures and pressure (700–1100°C and 1–6 bar) in various atmospheres with different contents of hydrogen and carbon monoxide. The reduction behaviour was described in terms of time to reduction, rate of reduction, and kinetics constant. For those pellets reduced in presence of carbon monoxide, also the carbon percentage in the reduced pellets was taken into account. All the obtained results were analysed through the employment of a commercial multi-objective optimisation tool (modeFrontier) in order to precisely define the weight that each single parameter has on the reduction behaviour of the pellets. The performed analyses allowed also to correlate the different processing parameters and the pellets properties in order to define the kinetics conditions as well as the factors limiting the reduction process.
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氧化铁球团变大气气体还原的临界分析
本文对工业氧化铁球团的直接还原动力学进行了分析。在不同的温度和压力(700–1100°C和1–6 bar)下,在氢气和一氧化碳含量不同的不同环境中还原各种类型的球团。还原行为根据还原时间、还原速率和动力学常数进行了描述。对于那些在一氧化碳存在下还原的颗粒,还考虑了还原颗粒中的碳百分比。通过使用商业多目标优化工具(modeFrontier)对所有获得的结果进行分析,以精确定义每个单个参数对颗粒还原行为的影响。所进行的分析还允许将不同的工艺参数和球团性质关联起来,以确定动力学条件以及限制还原过程的因素。
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来源期刊
Ironmaking & Steelmaking
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.
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