Nitrogen control in electric arc furnace steelmaking. Final report

Electric arc furnace produced steels are usually characterized by relatively high nitrogen content. This restricts their use in applications requiring controlled nitrogen content, such as deep drawing quality products. This report presents the results of an EPRI Center for Materials Production and steel industry study of methods for controlling or reducing the nitrogen content of EAF steels. The study involved a series of trials performed by North Star Steel at its Michigan Division plant. A major conclusion of the study is that nitrogen content can be reduced through an increase in carbon monoxide evolution sustained by oxygen injection and carbon additions.