Physical and Mathematical Modelling of Steelmaking and Casting Processes

进入21世纪，加拿大金属工业面临重大挑战，钢铁工业也不例外。所有钢铁制造商都致力于节能环保的运营，同时改进和优化炼钢和铸造工艺，以降低成本满足严格的产品质量要求。考虑到所有这些限制，加拿大钢铁制造商在研发方面投入了大量资金，主要研究领域之一是炼钢和铸造过程的物理和数学模型。对于所有这些过程，我们对反应单相流和多相流以及相关传输现象进行建模的方法和能力的发展，对有效地设计、建造和运行这些过程做出了重大贡献。然而，以前的研究大多将热力学和输运现象分开处理，而专注于热力学的研究人员很少研究输运现象，反之亦然。在这个拟议的研究计划中，将热力学和输运现象耦合在一起，开发出现实的数学模型，这是一个新的想法，也是冶金学者的梦想。此外，本研究计划将数学模型研究与物理模型、高温实验室实验和工厂试验相结合，以更好地了解不同炼铁和炼钢工艺背后的基本原理。感兴趣的关键话题包括氧气炼钢中的脱磷、钢包中的脱硫、钢包中钢水的杀灭、冶金容器中的粉尘和金属排放、连铸中的液态金属质量和流动控制。目前的研究计划旨在实现三个主要目标：*1)利用计算流体力学为炼钢和连铸操作开发健壮的多相流模型。感兴趣的主要领域是基本氧气炉(BOF)、电弧炉(EAF)、钢包、中间包和结晶器。*2)将开发的多相流CFD模型与热力学相结合。*3)使用水模型、高温实验室实验和工厂试验对所有数学模型进行实验验证。*这项拟议研究计划的最终愿景是发展黑色金属冶金领域的原创知识，这反过来将使加拿大钢铁制造商受益。最后，该项目产生的所有知识和HQP培训都可以转移并应用于其他冶金学科，如有色金属、轻金属等，加拿大各冶金行业将进行技术交叉授粉。

In the 21st century the Canadian metals industry is facing major challenges and the iron and steel industry is no exception. All steelmakers are aiming for energy efficient and environmentally friendly operations and at the same time improving and optimizing the steelmaking and casting processes to meet the stringent product quality demands at reduced cost. Having all these constraints in mind, Canadian steelmakers have heavily invested in R&D and one of the major areas of research has been physical and mathematical modelling of steelmaking and casting processes. For all these processes, the evolution in our methods and abilities to model reacting single phase and multiphase flows, and associated transport phenomena has contributed significantly to effectively design, build and operate these processes. However, most of the previous research dealt with thermodynamics and transport phenomena separately, and researchers focussing on thermodynamics, would rarely work on transport phenomena and vice versa. In this proposed research program, thermodynamics and transport phenomena will be coupled together to develop realistic mathematical models which is a novel idea and the metallurgists' dream. In addition, the present research program intends to combine mathematical modelling research with physical modelling, high temperature laboratory experiments, and plant trials for better understanding of the fundamentals behind different iron and steelmaking processes. Key topics of interest include dephosphorization in oxygen steelmaking, desulfurization in the ladle, killing of steel in the ladle, dust and metals emissions from metallurgical vessels, liquid metal quality and flow control in continuous casting. The current research program aims to achieve three major goals:*****1)Develop robust multiphase flow models for steel making and continuous casting operations using computational fluid dynamics. Major areas of interest are the Basic Oxygen Furnace (BOF), Electric Arc Furnace (EAF), Ladle, Tundish and Mould.****2)Integrate the developed multiphase flow CFD models with thermodynamics.***3)Experimentally validate all the mathematical models using water models, high temperature laboratory experiments and plant trials.*****The ultimate vision of this proposed research programme is to develop original knowledge in the field of ferrous metallurgy, which in turn will benefit the Canadian steel makers. Finally, all the knowledge and HQP training generated from this project can be transferred and applied to other metallurgical disciplines like non ferrous, light metals, etc. and technology cross pollination will happen between various metallurgical industries in Canada.********** **