Patent EA-003353-B1 (EA)
Title: Method and device for introducing bulk material into a metallurgical vessel
Inventor: ESPENDILLER BERND
IPC: F27B3/16
Filed: 2000-09-21
Abstract: 1. Method for introducing bulk material into a metallurgical vessel (10), in particular, scrap metal into an electric arc furnace which has at least one centrally arranged electrode (21) in an upper vessel part (11) closed gas-tightly by a lid (15), wherein the bulk material is transported in individual bulk material containers (41) having mouth parts to the end of the metallurgical vessel (10) and the mouth part of the bulk material container is connected to docking parts (31) of the lid (15), characterized in that by means of conveying units (42, 43, 44) connected to the bulk material containers, which move the bulk material in the direction mouth part of the bulk material container (41), the bulk material is moved out of the bulk material container; and that the bulk material is introduced via feed openings (17) in the lid (15), covered by means of the docking parts (31), into the metallurgical vessel (10) by simultaneous rotation of at least one annular part (16) of the lid (15). 2. Method according to claim 1, characterized in that the bulk material is pushed out of the bulk material container. 3. Method according to claim 1, characterized in that the bulk material angle of the bulk material conveyed into the metallurgical vessel is predetermined by control of the position of the bulk material container. 4. Device for introducing bulk material into a metallurgical vessel (10), in particular, of scrap metal into an electric arc furnace, which has at least one centrally arranged electrode (21) in an upper vessel part (11) closed by a lid (15), wherein a bulk material container (41) fillable with bulk material can be docked on a docking part (31), for performing the method according to claim 1, characterized in that at least one annular part (16) of the lid (15) is connected to a lid drive (51) so as to be rotatably in the plane of the lid, in that the rotatable lid part (16) has at least one feed opening (17) through which the bulk material can be conveyed into the upper vessel part (11), in that the feed openings (17) is covered by the docking parts (31) comprising a closeable wall (32), in that the bulk material container (41) is connected to a conveying device (42, 43, 44) by which the bulk material can be conveyed via the feed opening (17) through the lid part (16) into the metallurgical upper vessel part (11). 5. Device according to claim 4, characterized in that the conveying unit has a slide unit (43) having a cross-sectional shape matching that of the bulk material container (41) and being driven by means of the drive rod (45) via a slide motor (52). 6. Device according to claim 5, characterized in that the slide drive (52) is an electric motor or a fluid-driven motor. 7. Device according to claim 6, characterized in that the slide drive (52) is fastened on the bulk material container (41). 8. Device according to claim 4, characterized in that the end face of the bulk material container (41) has a shape which corresponds to that of the closeable wall (32) of the docking part (31). 9. Device according to claim 8, characterized in that the docking part (31) has a shaped element (33) which allows a predeterminable horizontal and/or vertical position of the docked bulk material container (41). 10. Device according to at least one of the aforementioned claims 4 to 9, characterized in that on the lid part (16) a tilting and/or pivoting unit (46) is provided with which the bulk material container (41) can be horizontally and vertically moved. 11. Device according to one of the preceding claims 4 to 10, characterized in that the wall of the docking part (31) and/or the end face of the bulk material container (41) has sealing strips (34). 12. Device according to claim 11, characterized in that the sealing strip (34) is supported in a springy way. 13. Device according to claim 4, characterized in that the conveying unit (42, 43, 44) is in communication by means of a measuring, and control unit (62) with a filling level measuring device (61) provided in the upper vessel part (11). 14. Device according to claim 4, characterized in that the metallurgical vessel is an electric arc furnace which has an annular charging space (18) as a result of a sleeve (13) concentrically arranged relative to the jacket of the upper furnace vessel (11), wherein in the shadow area of the charging space (18) the annular lid part (16) is configured to be rotatable about the sleeve. 15. Device according to claim 14, characterized in that the annular lid part (10) has at least two feed openings (17) and in that the bulk material container (41) can be positioned and again removed along a straight line (G) tangentially extending to a line which is guided through the center (M) of the feed openings (17).