Method for preparing scrap iron to be fed to steelmaking electric furnaces, and apparatus for carrying out the method

摘要

A method for preparing scrap iron to be fed to steelmaking electric furnaces and an apparatus for carrying out it, the method consisting in producing, separately from the flue gas disposal system of the steelmaking furnace, hot gases in a gas generation chamber. The hot gases generated in the chamber are conveyed so that they flow through the scrap to be fed to the steelmaking furnace in order to preheat the scrap. The gases used to preheat the scrap are then conveyed into a reheating chamber (5) which is kept at a controlled temperature by means of regenerative burners (6). The gases are retained in the reheating chamber (5) for a preset time before they are returned to preheat the scrap or discharged into the atmosphere.