Based on fundamental process theory for modern electric arc furnace steelmaking (EAF)

the thermo chemistry calculating model and exergitic model to describe EAF steelmaking process have been established

by which the simulation of steelmaking process for a 60 t DC EAF at Daye Special Steel was carried out to carry out the energy and exergy analysis on EAF steelmaking process with charge of 100% scrap

30% hot metal + 70% scrap

and 64. 4% hot metal + 35. 6% scrap. Results show that the melting electric energy consumption decreases obviously by charging part hot metal

but total energy utilization ratio decreases

and as considering to recover and utilize waste gas and cooling water physical exergy

the exergy of EAF steelmaking process increases slightly.