(1211) Optimization of EAF operation with a Holistic Process Model based on continuous Off-gas Monitoring

摘要

The efficient use of resources in form of raw materials and energies is leading more and more to developments around the Electric Arc Furnace. One of these developments is the EAF Off-gas Monitoring System and Holistic Process Model from Siemens VAI that is continuously monitoring the EAF off-gas analysis and offgas flow. These measured values are utilized in the SIMETAL holistic process model for closed-loop control of the burners and oxygen injector units by adjusting the flow rate and consumption values for natural gas, oxygen and also injection carbon to optimized values. The application of this system is geared towards improvement of overall energy, electrode, oxygen and natural gas consumption as well as metallic yield and productivity. Further benefits of the system are optimized greenhouse gas emission control and an increased safety by detecting potential hazardous conditions such as water leaks into the furnace. This paper will report about the first installation of such a system and its operational results at the melt shop of SDI Roanoke, a company of the Steel Dynamics' Roanoke Bar Division. As an outlook, further developments of the system will be discussed.