ABB, has launched ArcSave, the next generation electric arc furnace electromagnetic stirrer (EAF-EMS) that reduces carry over slag and shortens tap-to-tap time, strengthens slag-melt homogenization, increases yield and contributes to safer operations.
The ArcSave’s powerful electromagnetic stirring enhances the large scrap melting and makes stratification less significant due to forced convection. The forced convection offers a homogenous temperature distribution and high scrap melting rate. The melt velocity achieved is ten times faster, as compared to just having natural convection in the bath, and results in less power on time.
The temperature homogenization helps steel manufacturers to obtain an exact tapping temperature for different grades of steel and allows smooth tapping without delays. The uniform melt gives producers a safer, more reliable EAF operation with a reduction in the number of scrap cave-ins, fewer instances of over tap temperature and carbon boiling out.
Damage at the slag-line level is reduced due to heat reduction during the power on, lower tapping temperatures, the decreased FeO content in the slag and the diminished oxygen in the steel. As most critical damage occurs at the slag-line, by performance optimization, ArcSave helps steel producers enjoy refractory repair savings.
