Method and device for the continuous production of steel using metal charge material

Equipment (1) for the continuous production of steel with the use of metal charge materials (8), which comprises a melting vessel (2) with at least one burner (14) for fossil fuels (23) that acts on the charge materials in a lower part (9) of the melting vessel (2), and a treatment vessel (3), which is connected with the lower part (6) of the melting vessel (2) by a taphole (10), such that the molten metal (16) is continuously discharged into the treatment vessel, in which the desired grade of steel is adjusted, such that the charge materials (8) are preheated in an upper part of the melting vessel (2) by the process gases (13), and such that gases (22) are introduced into the melting vessel (2) from the outside for post combustion of the process gases (13), wherein the melting vessel (2) has a central hollow interior shaft (5), which extends from above into the melting vessel (2) along the longitudinal axis of the melting vessel (2) substantially up to a level of the tap hole, and that the wall (20) of the interior shaft (5) has inlets (21) that connect an interior of the shaft (5) with an interior of the melting vessel (2) for introducing post-combustion gases (22) from the interior of the shaft (5) to the interior of the melting vessel (2), which are arranged one above the other along the casing of the interior shaft for post combustion of the process gases (13) in stages in post-combustion planes (E1-E4) arranged one above the other, wherein the interior shaft (5) has feed means (19) for introducing fossil fuels to at least one burner (14) arranged at an end of the interior shaft that projects into the charge materials (B).