Verfahren zur Stahlerzeugung und Ofen zur Anwendung dieses Verfahrens

1,134,040. Continuous metal firing furnaces. BIURO PROJEKTOW PRZEMSLU HUTNICZEGO " BIPROHUT ". 10 Nov., 1966 [10 Nov., 1965], No. 50517/66. Heading F4B. In a steel making furnace having an annular chamber divided into three zones I, II, III, respectively for charging and preheating, further heating, and melting, refining and discharging, a ring-hearth 7 is divided into three melting hearths 10 each having its own taphole, and is rotatable on rollers 8 to move the hearths from zone to zone. A dividing wall 12 resting on a water cooled beam 13 separates zones I and III. Solid material is charged through holes in the roof 5 closable by covers 6 and exhaust gases leave by a flue (16). In zone II oxygen is introduced to complete combustion of the gases from zone III and heat the charge. In zone III pig-iron is introduced, oxygen is blown in from a lance 17, and high calorific value fuel is added from a burner (18) if necessary, the steel being discharged via a discharge hole and a spout to a casting ladle.