| 摘要 |
<p>1310214 Arc furnace steelmaking METALLGESELLSCHAFT AG and STEEL CO OF CANADA Ltd 18 June 1971 [18 June 1970] 28821/71 Addition to 1269124 Heading C7D [Also in Division F4] After an initial charge has been melted in a three phase direct arc furnace particulate ironbearing material is propelled into the bath at an angle of 40 degrees to 80 degrees to the horizontal and a velocity sufficient to cause the material to penetrate below the surface of the slag. The material is supplied from hopper 34 by conveyer 38 to ducts 50, 52, 54.passing through the furnace roof and located radially outward of the electrodes 16, 18, 20, the discharge outlets 62, 64, 66 being suitably inclined. The charge is propelled by compressed air from lines 70, 72, 74.</p> |
