Patent EA-000658-B1 (EA)
Title: A metallurgical furnace unit
Inventor: K ANGSTROM GSTROM PER
IPC: F27B7/20
Filed: 1998-05-19
Abstract: 1. A metallurgical furnace unit (1) having a cylindrical furnace body (2) intended for rotation and/or tilting or like movement and provided with at least one ring (7) which is arranged outside the furnace body (2) and functions to enable said movement to take place, wherein each ring (7) is disposed at a distance from the furnace body (2) and connected thereto by a force-transferring supporting member (6) which extends in the longitudinal direction of the furnace unit (1) and which is adapted to prevent the transfer of thermal-expansion movement of the furnace body (2) to the ring (7) and to take-up external loads from the intrinsic weight of the furnace body and the weight of the furnace charge, characterized in that the supporting member (6) comprises a closed mantle which surrounds the furnace body (2) and which is connected to the furnace body (2) and to the ring (7) respectively by a attachment being so flexible as to permit a limited change in the angle between the mantle (6) and the furnace body (2) that can occur as a result of the movements of the furnace body (2) caused by thermal expansion, therewith eliminating these movements in the absence of any significant curvature or other deformation of the actual mantle (6). 2. A metallurgical furnace unit according to Claim 1, characterized in that the mantle (6) is cylindrical and is connected at one end or at a location in the proximity of said one end to a flange (8) or the like fastened to the furnace body (2) and projecting outwardly therefrom. 3. A metallurgical furnace unit according to Claim 1, characterized in that the mantle (6) is conical; and in that the conical mantle is attached to the furnace body (2) at its end of smallest cross-section. 4. A metallurgical furnace unit according to Claims 1-3, characterized by a heat insulating shield disposed between the ring (7) and the furnace body (2). 5. A metallurgical furnace unit according to Claims 1-4, characterized in that the mantle (6) and/or the flange (8) on the furnace body (2) includes through-penetrating, air-cooling holes. 6. A top-blown rotary converter (1) having a cylindrical furnace body (2), a conical bottom part (3) and an upper part (4) and having a support ring (7) disposed outside the cylindrical furnace body (2), said support ring (7) being spaced from the furnace body (2) and connected thereto through the medium of a cylindrical or conical supporting member (6) which extends in the longitudinal direction of the converter (1) and functions to take-up movements caused by thermal expansion of said furnace body (2), characterized in that the supporting member (6) is comprised of a closed mantle which surrounds the furnace body (2) and which is connected to the furnace body (2) and to the ring (7) respectively with a flexible attachment that will permit given, limited angle-changes between the mantle (6) and the furnace body (2), said angle changes being liable to occur as a result of movements of the furnace body (2) caused by thermal expansion, wherewith said movements are eliminated in the absence of significant curvature or other deformation of the actual mantle (6).