Fundamental Kinetic Study of Slag/Metal/Gas reactions

炉渣金属气体反应的基本动力学研究******目前的项目将确定金属精炼中重要的基本性质。特别是可以在数学模型中使用的属性，以帮助优化炼钢过程。这项工作将对实际炼钢和科学界产生影响。这些数据也将对无碳电化学炼钢工艺的设计有用。******冶金渣被外行人视为过程中的废物，被认为是不美观和不受欢迎的。但对冶金学家来说，它是用来提炼金属的重要试剂。在炼钢中尤其如此，用炉渣从金属中除去硫、磷和其他元素。炉渣还可以为金属提供氧气，这在脱硫的情况下是一件坏事，但在脱磷的情况下是好事。炉渣供氧速率和金属中活性元素消耗速率之间的平衡对于在炉渣/金属界面设置所谓的“动态氧势”很重要。测量动态氧势是不可能的，在大多数情况下，它不能直接计算。在我们的实验室里，我们最近提出了一种可以确定氧转移速率的方法，但是，由于没有更多关于氧转移速率的信息，我们仍然没有一个全面的图景。******提出的研究旨在测量各种炉渣和条件下的氧转移速率，并将其与电子电导率（也称为协助氧转移）的测量结果进行比较。这些测量与我们实验室最近采用的氧转移测量相结合，将为我们提供创建更好的过程模型的能力。******电导率测量对我们的基本理解也很重要。在我们的实验室中发现了含氧化铁的炉渣的电子传导机制。这种机制，被称为扩散辅助跳跃，最近被我实验室的工作人员证明可以用于含锰的炉渣。目前的研究将探讨这种机制是否适用于一系列不同类型的渣。

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.