Reduction vessel for the reduction of metal-oxide-bearing material

Abstract

The invention relates to a reduction vessel (1) for the reduction of metal-oxide-bearing material, particularly of iron ore, by means of a reduction gas flowing countercurrently to the metal-oxide-bearing material, which reduction vessel (1) is provided with an inlet (5) for the metal-oxide-bearing material, an inlet (6) for the reduction gas, an outlet (7) for off-gas and an outlet (8) for reduced material, downstream of which outlet (8) a lower sealing leg (9) is connected, a supply line (10) for a first sealing gas being provided at the lower sealing leg (9) in order to seal the reduction vessel (1) against the environment, characterized in that at least one additional supply line (12) for an additional sealing gas is provided at the lower sealing leg (9), the additional supply line (12) being located downstream of the supply line (10) for the first sealing gas, seen in the direction of flow of the reduced material (FIG. 1).

Dependencies are inferred from the claim text.