Preheat system
Preheater for arc furnaces
Preheating mechanism for use with duplex electric-arc furnace sy
Procedure and apparatus for continuous supply of heat in electri
Procedure and means for preheating scrap to be charged into a sm
Process and device for disposal of filter materials
Process and device for melting down of scrap
Process for casting fused refractory oxides having high melting
Process for melting of metal materials in a shaft furnace
Process for the continuous melting of scrap in an electric direc