Oxygen/Carbon Injection System at Charter Steel Cleveland Facility Project Description and Operational Results

摘要

An electric arc furnace, ladle metallurgical facility, single vacuum oxygen degasser (VOD) and a four strand billet caster comprise this melting facility that support a rod and bar-in-coil rolling mill. The Electric Arc Furnace at Charter Steel, Cleveland facility started operations in June 2006; furnace was initially equipped with a consumable door lances manipulator to inject oxygen and carbon required during the melting process. In order to improve the furnace operation a chemical energy package was installed on March 2008. This paper describes the complete installation and main operational results obtained with the use of the Module Technology supplied by MORE. Being a melt shop facility with a high diversity of steel grades to produce, from low to high carbon products with different restriction in Phosphorus and Nitrogen content, the use of the chemical energy package has presented a challenge in order to obtain the desired result of higher productivity performance (ton/hr) with the right liquid steel chemistry. Electrical power and oxygen/carbon profiles tested during the furnace operation are also discussed in this paper.