Abstract: A device for closing or opening an opening, in particular a filling or bottom opening (11) of a material bunker (12) arranged above the furnace throat of a blast furnace, including a tilting disk (10) connectable to a drive. The tilting disk (10) is articulated to two swivel arms (15, 16) pivotably mounted about two swivel axes (13, 14) extending parallel to each other, and to be more precise, in such a manner that the edge areas of the tilting disk (10) situated on a perpendicular to the swivel axes (13, 14) of the two swivel arms (15, 16), upon a movement of these arms, move from the closed into the opened position, and vice versa, along oppositely directed arc paths (23, 24).

Abstract: A blast furnace head (11) including a material loading device comprising rotary chute (14) driven in rotation about a first, vertical axis of rotation (16), and a loading chute (15) at the outlet of same, driven in rotation about a second, vertical axis of rotation (17) laterally offset relative to the first axis of rotation (16). The gears (20, 21) assigned to both of the chutes (14, 15) are arranged within a sealing chamber (22). Within this sealing chamber (22), a means (28) is arranged for supplying integrated measuring devices (29 or 30), lubrication points or similar maintenance recipients, with these supply means (28) being drivable by one of the gears (20, 21) assigned to the two chutes, in particular by the gear (20) assigned to the rotary chute (14).