ABSTRACT

Insights into the kinetics occurring during the combined blown (top and bottom blowing) oxygen steelmaking process, particularly at the impact and emulsion zones within separate reactors, can provide a deeper understanding of the refining mechanism in steelmaking. A dynamic model has been developed that can predict the contributions of various refining processes such as decarburization, desiliconization, demanganization, and dephosphorization. The model considers gas–metal interactions at the impact zone and slag–metal–gas interactions at the emulsion zone in an oxygen steelmaking converter. The model includes sub-models for lime dissolution and heat loss calculation. FactSage™ software and its macro programming facility were employed to integrate thermochemical and kinetic information into the model. The model predicts the temperature, composition, and volume of several phases involved in the process. The model predictions transient metal and slag compositions and metal bath temperature, were found to be consistent with the plant data.

摘要

深入了解联合吹炼（顶吹和底吹）氧气炼钢过程中发生的动力学，特别是在单独反应器内的冲击区和乳化区，可以更深入地了解炼钢中的精炼机制。已经开发出一个动态模型，可以预测脱碳、脱硅、脱锰和脱磷等各种精炼过程的贡献。该模型考虑了氧气炼钢转炉中冲击区的气体-金属相互作用以及乳化区的炉渣-金属-气体相互作用。该模型包括用于石灰溶解和热损失计算的子模型。FactSage™ 软件及其宏编程工具用于将热化学和动力学信息集成到模型中。该模型预测温度，该过程中涉及的几个阶段的组成和体积。该模型预测的瞬态金属和炉渣成分以及金属熔池温度与工厂数据一致。