Patent ID: 6201826
Filing Date: 2001-03-13
Classification: C21C,F27D,Y02P

Abstract:
Loading system for an electric arc furnace comprising a loading station into which raw material is suitable to be loaded in at least one loading element, a pre-heating station for said scrap and a pick-up and moving device provided with at least a manipulator arm rotating around a central pin to describe with one end part at least one portion of a circumference on which said furnace, said loading station and said pre-heating station lie, said manipulator arm being substantially equal in length to the radius of said circumference, said loading element being openable at an upper part and having a bottom able to be at least partly opened by means of movable elements, a covering roof being able to be selectively associated with said electric furnace and being movable from a position wherein it closes the furnace and a lateral position of non interference with said furnace, said roof including at least a hole to discharge the fumes from the furnace which is connected to a fume discharge conduit which is associated at an end with an air-tight cover to temporally close at the upper part at least said loading element, the system being characterized in that:said loading station is distanced from said pre-heating station;said loading element comprises a container selectively located in or removed from each of said loading and pre-heating stations;said manipulator arm is to be moved vertically to cooperate selectively with said container to move it between said loading station, said pre-heating station and a position above said furnace;in said pre-heating station, said container selectively cooperates at an upper part with said air-tight cover and at the lower part directly with a combustion chamber, wherein pre-heating fumes passing through said container and passing through the scrap from the top downwards, are partly burnt, and in thatthe air-tight cover is movable vertically and rotatably on a horizontal plane, said fume-discharge conduit being at least partly coaxial with the axis of rotation of said air-tight cover.