Abstract: A cooling plate for refractory-lined shaft furnaces includes a first cooling plate element facing the inside of the furnace and a second, rear cooling plate element, where in the cooling plate elements are welded together. A cooling channel is formed between the first and second elements of the cooling plate. Pipe elements are connected to the coolant inlet and coolant outlet. The first cooling plate element is a bloom with a plane front side facing the inside of the furnace, and the cross-sectional area of the cooling channel is larger in the end regions thereof than in the center region, as viewed along the longitudinal extent of the cross-section.

Abstract: A metallurgical furnace provided with a refractory lining and an outer furnace steel jacket, having copper cooling plates, wherein a flow of cooling medium flows through the cooling plates arranged between the furnace steel jacket and the refractory lining. Cooling medium pipes of the copper cooling plate provided for supplying and removing the cooling medium are guided through the furnace steel jacket to the exterior and are gas-tightly welded to the furnace steel jacket. The copper cooling plate is connected free of play in all spatial directions to the furnace steel jacket, in addition to attachment by way of the cooling medium pipes welded to the furnace steel jacket, by at least one fixed-point fastening element that is welded to the furnace steel jacket. The at least one fixed-point fastening element is arranged within at least one of the upper part and the lower part of the copper cooling plate in immediate proximity of the cooling medium pipes.

Abstract: The invention relates to a cooling plate (1, 101) for a shaft furnace provided with a refractory lining. Said shaft furnace comprises a first laminated cooling plate element (2, 102) which is oriented towards the inside of the furnace (Oi), a second laminated rear cooling plate element (3, 103) which is welded to the first element, a cooling channel (7, 107) arranged between the first and second cooling plate elements, and tube sections (8, 9) to the cooling agent inlet or the cooling agent outlet. The aim of the invention is to improve the production, flow and cooling properties. To this end, the first cooling plate element (2, 102) is embodied in the form of a bloom having a plane front side (14) facing the inside of the furnace (O1), and the cross-sectional surface of the cooling channel is larger than in the central region (20; 120), in relation to the longitudinal extension of the cross-section in the end regions (18, 19; 118, 119). The invention also relates to a cooling plate system (33).

Abstract: The invention relates to a throat closing device for shaft furnaces, especially blast furnaces having a material feeding hopper (1), to which a temporarily rotating rotary hopper (2) which is sealed with regard to the stationary parts (3) is connected. The inventive throat closing device is produced such that it has a less complex construction and is easier to install, and can be easily serviced due to the provision of a sealing unit (5) comprised of an adjusting flange (7) which is arranged above the rotary hopper (2), is complementary to the hopper flange (6) thereof, can be lifted and lowered, and which comprises seals (8, 9) located on the flange underside. Said sealing unit is configured in a spanning wall (12) which comprises a compensating element (13) and which connects the adjusting flange (7) to the stationary part (3) of the rotary hopper (2).