The optimal solution for Electric Arc Furnace (EAF) process control

  • ArcSpec measures and analyses optical emissions of the ongoing process inside the EAF
  • Measurement is continuous, contactless and precise and can be done from multiple points
  • Provides real time information about the progression and efficiency of the ongoing melting process
  • EAF melts the scrap material faster and more efficiently
  • Enables the automatic power control of each EAF electrode individually
  • Saves energy, time and raw materials in addition to reducing refractory wear

Real time measurement and analysis enables the most efficient possible melting process

ArcSpec measures, shows and analyzes the melting progression of the EAF hot spots and enables the optimal control of electrode power levels. Since melting does not happen at the same speed in every hot spot of the EAF, it’s important to control the electrodes individually. In addition to the faster melting process, ArcSpec also enables e.g. accurate timing of the second and possible third scrap basket as well. That also reduces the overall process time.

ArcSpec can be combined with TempSpec to gain even more control over the melting and tapping process. ArcSpec is based on Luxmet’s advanced optical light emission gathering technology and has been developed in close co-operation with our key industry partners.

ArcSpec in stainless steel production

In stainless steel production the furnace refractory is exposed to a great amount of heat generated by the arcs. That results in wasted energy and additional wearing of the refractories. Since ArcSpec enables the control of the electrode voltages in real time and speeds up the process, it minimizes the time the refractories are exposed to the excessive heat. That leads to improved durability of the refractories.

ArcSpec in carbon steel production

ArcSpec’s real time operation and EAF control ensures the accurate timing of the oxygen and carbon injection in the foaming process. Optimizing the process reduces energy consumption. Typical energy savings are between 5 to 10%. Continuous slag temperature measurements lead to optimal tapping temperature.