Fundamental Kinetic Study of Slag/Metal/Gas reactions

炉渣/金属/气体反应的基础动力学研究

• 批准号: RGPIN-2018-06504
• 负责人: Coley, Kenneth
• 金额: $ 2.4万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=647906
• 关键词: Fundamental; Kinetic; Study; Slag; Metal

Fundamental Kinetic Study of Slag Metal Gas Reactions******The current project will determine fundamental properties important in metal refining. In particular, properties that can be used in mathematical models to help optimize steelmaking processes. The work will impact practical steelmaking and the scientific community. The data will also be useful in the design of carbon free electrochemical steelmaking processes.******Metallurgical slag is seen by the lay-person as a waste from the process and is considered unsightly and undesirable. However to the metallurgist it is an important reagent used to refine the metal. This is particularly true in steelmaking where slag is used to remove sulphur, phosphorus and other elements, from the metal. Slag may also supply oxygen to the metal which in the case of desulphurization is a bad thing but in the case of dephosphorisation is good. The balance between the rate of oxygen supply from the slag and consumption by reactive elements in the metal is important in setting the so called "dynamic oxygen potential" at the slag/metal interface. It is not possible to measure the dynamic oxygen potential and in most cases it cannot be calculated directly. In our laboratory we have recently proposed method by which it can be determined but, without more information on the rate of oxygen transfer, we still do not have a comprehensive picture.******The proposed research is intended to measure transfer rates of oxygen for a wide range of slags and conditions and to compare these with measurements of electronic conductivity(also known to assist oxygen transfer). These measurements combined with measurements of oxygen transfer by the method recently employed in our lab, will offer us the ability to create better models of processes.******The conductivity measurements are also important for our fundamental understanding. A mechanism for electronic conduction was identified in our lab for slags containing iron oxide. This mechanism, known as diffusion assisted hopping, was recently shown by workers in my lab to work for slags containing manganese. The current research will investigate whether this mechanism works for a range of different slag types.

炉渣金属气体反应的基本动力学研究******目前的项目将确定在金属炼油中重要的基本特性。特别是，可以在数学模型中使用的属性来帮助优化钢制过程。这项工作将影响实用的钢材和科学界。数据也将在无碳电化学炼钢工艺的设计中有用。但是，对于冶金学家来说，它是用于改进金属的重要试剂。在用矿渣从金属中去除硫，磷和其他元素的钢材中尤其如此。在脱硫化是一件坏事的情况下，炉渣也可能向金属供应氧气，但在去磷酸化的情况下是好的。金属中的反应性元素的氧气供应速率之间的平衡对于将所谓的“动态氧电势”设置在炉渣/金属界面上很重要。不可能测量动态氧电位，在大多数情况下，无法直接计算。在我们的实验室中，我们最近提出了可以确定的方法，但是，如果没有更多有关氧气转移速率的信息，我们仍然没有全面的图像。******拟议的研究旨在测量氧气的转移速率，以在广泛的炉灶和条件下进行氧气的转移速率，并与这些电导率相比，这些研究（也已知可以帮助氧气转移）。 这些测量值与最近在我们实验室中使用的方法进行的氧气转移的测量结合在一起，将为我们提供创建更好的过程模型的能力。******电导率测量值对我们的基本理解也很重要。在我们的实验室中发现了一种电子传导机制，用于含有氧化铁的矿渣。该机制被称为扩散辅助跳跃，最近由我的实验室中的工人表明，用于含有锰的矿渣。当前的研究将研究这种机制是否适用于各种不同的炉渣类型。