D.C. arc furnace having electrically conductive hearth and metho

D.C. furnace with a hearth electrode, hearth electrode and elect

DC arc furnace

DC Arc furnace component

DC Arc furnace hearth construction

DC Arc furnace improved hearth construction

DC arc furnace improved hearth construction

Device for improved slag retention in water cooled furnace...

Device for lifting and moving the roof of a spray cooled furnace

Device for relief of thermal stress in spray cooled furnace elem

Device to take in fumes and cool the roof of electric furnaces

Direct current arc furnace

Direct current arc furnace

Direct current arc furnace and a method for melting or heating r

Direct current arc furnace and method for its operation

Direct current-light arc furnace

Direct-current arc furnace having circumferential zones of varyi

Direct-current electric-arc furnace

Dome for electric arc furnace

Dynamic seal