Energy-efficient solutions of foundry class steelmaking electric arc furnace

Purpose. Substantiation of solutions aimed at reducing heat losses, mainly, by refractory lining during forced downtime and steelmaking bath in conditions traditionally low specific power transformer. Methodology. Mathematical modeling mass transfer processes numerical experiment. Findings. A mathematical model energy-technological arc furnace workspace has been developed to analyze minimize energy consumption daily production cycle. Geometrical operating parameters are taken into account, particular: variation arcs efficiency evolution wells charge under electrodes melting process; circulation melt due bubbling with inert gas through bottom porous plug; loss on accumulation refractory, cooling water off-gas. Originality. For the first time, concept increasing substantiated, based following set solutions: increase electrical given productivity; reduction shape factor (ratio diameter depth) from traditional 5 up 2.5 deepening and, accordingly, its radiating surface; optimization walls roof cooled surface relative area, where massive heat-absorbing is not used; application energy-saving water-cooled elements spatial structure that promotes formation heat-insulating heat-accumulating slag filling. Practical value. Implementation energy-efficient typical 6 12-t foundry class furnaces provides expenditure 1315 2830% respectively without significant changes infrastructure loss, for lining, intensification forcibly stirred deep bath.