Industrial furnace for melting metal and method for operating an industrial furnace for melting metal

摘要

The invention relates to an industrial furnace for melting metal, comprising: at least one melting chamber (), in which there is a molten metal (3), the melting chamber (4) having a heating zone (6) with at least one burner (7), a charging shaft (1) for introducing metal pieces (2) into the molten metal (3) and - a conveyor system (14) for conveying the metal pieces (2) into the charging shaft (1). Furthermore, the invention relates to a method for operating an industrial furnace Melting metal. The industrial furnace according to the invention is characterized by a carbonization gas storage (10) which is connected to the charging shaft (1) and which is set up for the storage of carbonization gases under an overpressure in order to create a pressure gradient between the carbonization gas storage (10) and the heating zone (6) to produce a sealant (11) for gas-tight sealing of the carbonization gas storage (10) with respect to the charging shaft (1), a charging line (13) by the Conveying system (14) leads to the carbonization gas storage (10) and a carbonization gas line (16) connected to an outlet (17) in the carbonization gas storage (10) and to an inlet (18) in the heating zone (6) of the melting chamber (4) is to supply the smoldering gases of a combustion in the heating zone (6) of the melting chamber (4) with combustion air, which is introduced into the heating zone (6) by means of the burner (7), which can be operated with excess air.