RT Journal Article
T1 Induced Currents in the Lining and Steel Shell of Submerged Arc Furnaces
A1 Fromreide, Mads
A1 Gómez Pedreira, María Dolores
A1 Halvorsen, Svenn Anton
A1 Salgado Rodríguez, María del Pilar
K1 Submerged arc furnaces
K1 Electromagnetic induction
K1 Steel shell
K1 2D/3D numerical simulation
K1 Industrial electric furnace design
AB Numerical models in 2D and 3D are used to study induced currents in the lining and steel shell of large three-phase submerged arc furnaces. The alternating currents supplied through the electrodes cause a significant amount of induced power in the furnace lining and shell. The induced currents flow in three large loops with an accumulation of current near the top of the steel shell between the electrodes. The net result is a thermal loss with heat dissipated at the surface. Furthermore, such accumulation may cause potentially damaging hot spots in the steel. If this persists over a long time, the shell may thin and deteriorate and, in worst-case scenarios, the shell may be cracked or punctured. The influence of an electrically conducting lining and the effect of subdividing the shell in insulated sections have been studied. It is shown that an electrically conducting lining will have a significant shielding effect on the steel shell. The induced currents are considerably reduced in the steel, and “pushed into” the lining. The size of current loops in the shell can be restricted by subdividing the steel into sections with insulation between each section. Such modification is detrimental. Strong opposing currents will be formed on each side of the insulating gaps, leading to higher current concentrations and increasing the risk of hot spots on the steel shell. In addition, the heat loss due to induced currents in the steel will be enhanced
PB Springer
SN 2199-3831
SN 2199-3823
YR 2023
FD 2023
LK http://hdl.handle.net/10347/30845
UL http://hdl.handle.net/10347/30845
LA eng
NO Fromreide, M., Gómez, D., Halvorsen, S.A. et al. Induced Currents in the Lining and Steel Shell of Submerged Arc Furnaces. J. Sustain. Metall. 9, 375–385 (2023). https://doi.org/10.1007/s40831-022-00625-6
NO Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature
DS Minerva
RD 24 abr 2026