| 摘要 |
FIELD: method of scrap melting in closed, DC shaft furnace, and arc furnace for embodiment of the method. SUBSTANCE: method of scrap melting includes loading of scrap in form of circular surface on the furnace head ring. Hot gases coming toward lowering scrap are sucked off below the zone of scrap loading from cylindrical outer wall of scrap column, inner free surface of the annular flat section is reduced before the scrap reaches the melting zone, and in melting zone in the center of flat section the scrap is exposed to the arc effect. Arc furnace is made so that cathode 21 is held by electrode holder 30, made in form of tube 31 located concentrically to the middle axis 1 of furnace well. Tube 31 has conical narrowing part 34 on its head end and rests on the base by means of cantilever 32 on shaft 11. Head 10 of shaft furnace has duct 19 embracing shaft 11. EFFECT: higher efficiency. 1 dwg |
