Kinetic Aspects of Phosphorus Removal from Electromagnetically Levitated 600 MPa Steel Droplets

• Published in: Metals (Basel ) Vol. 11; no. 9; p. 1460
• Main Authors: Jiang, Qi, Zhang, Guifang, Yang, Yindong, McLean, Alexander, Gao, Lei
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01-09-2021
• Subjects: 600 MPa steel; Alloys; Construction industry; dephosphorization; Dephosphorizing; Diffusion rate; Droplets; electromagnetic levitation; Evaporation rate; Flow velocity; Gas flow; Gases; Kinetics; Magnetic levitation; mass transfer; Optimization; Phosphorus; Phosphorus removal; Reynolds number; Steel; Temperature effects; Vapor phases; China
• ISSN: 2075-4701; 2075-4701
• DOI: 10.3390/met11091460

A kinetic model was developed to study the dephosphorization of 600 MPa steel droplets under electromagnetic levitation conditions. The relationships which were derived from the model between dephosphorization and the influence of temperature and gas flow rate were in good agreement with experimental data. Both temperature and gas flow rate were conducive to the evaporation of phosphorus, with the effect of temperature having a greater influence than that of the gas velocity. The results show that the rate-controlling step for the dephosphorization process was diffusion within the gas phase. This work aims to provide a theoretical basis for process optimization during the dephosphorization of 600 MPa steel.