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AssigneeSMS Siemag Aktiengesellschaft
InventorsHans-Wilhelm Schöck, Guido Kleinschmidt, Lars Meier
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A disadvantage during the operation of a change converter unit (1) of an oxygen steel-making plant, wherein converters (4a) that have become unusable due to the wear and tear of the fireproof material are removed from the steel-making stand (2) for repair, and wherein a converter (4b) provided with fireproof material is added in exchange to the steel-making stand (2), is that the connection between the converter vessel and the carrier ring first must be separated, and then either a change carriage provided with a lifting device must be used, or the implementation is limited, or restricted, by the crane capacity when changing AOD converters in stainless steel plants. In order to eliminate said disadvantages, the invention proposes that, for the change process, the worn converter (4a), including the entire converter unit (3a), comprising not only the converter (4a), but also the converter carriage (7), carrier ring (6), tilting drive (5), bottom flushing device (9) and, if present, a carrier ring cooling device (10), is moved out of the steel-making stand (2) into an empty delivery and waiting stand (12s) for repair, and that, at the same time, a further structurally identical complete converter unit (3b), comprising a repaired, ready-to-use converter (4b), is moved from a further delivery and waiting stand (12b) into the steel-making stand (2).
Method of operating a changing converter unit (1) of a converter steel plant, wherein alternatingly the converter (4a) which has become useless because of wear of the refractory material is removed from the converter stand for repairs and a converter (4b) newly lined with refractory material is placed in the converter stand in an exchange, wherein, when the exchange procedure is carried out, the worn converter (4a) is moved including the entire complete converter unit (3a) composed, in addition to the converter (4a), of converter carriage (7), support ring (6), tilting drive (5), floor rinsing device (9) and a possibly present support ring cooling device (10), from the converter stand (2) for repairs into a free lining and holding stand (12a) and simultaneously another structurally identical complete converter unit 3b, which contains a repaired useful converter (4b), is moved from another lining and holding stand (12b) into the converter stand (2), wherein the transport of the complete converter unit (3a, 3b) is carried out by means of the integrated converter carriage (7) constructed with its own drive on the converter carriage track (17), wherein, after separating the complete converter unit (3a, 3b) from an energy and media station (11) which is used jointly by both complete converter units (3a, 3b), for providing the energy supply for the transport a self-propelled energy supply carriage (14) is moved in and coupled to the converter carriage (7) through the converter carriage track (17).
Dependencies are inferred from the claim text.