摘要:
Provided is an electric arc melting facility in which a source iron can be melted with high thermal efficiency and supply of the source iron from a preheating chamber to a melting chamber can be controlled and an operation method for the molten metal using the electric arc melting facility. An electric arc melting facility 1 includes a melting chamber 2 configured to melt a source iron therein, a shaft-shaped preheating chamber 4 directly connected to the melting chamber, and an electrode 3. At least a part of a bottom surface of the preheating chamber 4 is formed as an inclined bottom surface 7a inclined downward toward the melting chamber 2. A shaft opening dimension H is set to an optimum value for controlling the supply of the source iron. A pushing device 6 is disposed at a lower side of the preheating chamber 4 and configured to move the source iron toward the melting chamber 2. The source iron is supplied from the preheating chamber 4 to the melting chamber 2 when the pushing device 6 is operated. The supply of the source iron from the preheating chamber 4 to the melting chamber 2 is stopped when the operation of the pushing device 6 is halted. The optimum value of the shaft opening dimension H is set so as to satisfy the relationship "A ≤ H ≤ 4A", where A is a maximum length of the source iron.
摘要:
The invention relates to a method for performing chemical processes, where raw materials are heated, wherein a melt pool is produced in a tank or reactor using low-melting metals or metal alloys, wherein the raw materials are metered directly into the melt pool in the lower part of the tank or reactor.
摘要:
L'invention concerne un procédé de valorisation de pneus usagés, contenant du fil en acier et qui ont été transformés par des opérations de broyage en un broyat comportant des morceaux de fil d'acier et un granulat de caoutchouc qui est essentiellement caractérisé en ce que le broyat est transformé en portion de broyat compacté (20), utilisable comme mini-charges pour des installations de fusion de métaux (1), tels que des cubilots ou des fours d'aciérie.
摘要:
Device (10) for loading a metal charge in a melting furnace (11) comprising a hearth (12) having an aperture (17). The device (10) comprises a main conveyor (15) terminally associated with a connection conveyor (16) which cooperates with translation members (27) and which can assume at least an operating position cooperating with the inside of the furnace (11) through the aperture (17). The hearth (12) tilts around a substantially horizontal tilting axis (19), the furnace (11) and the connection conveyor (16) have respective median axes (22, 21). The tilting axis (19) lies on a vertical plane offset with respect to the vertical plane in which the median axis (22) and the baricenter (B) of the furnace (11) lie, and passes through the aperture (17). The connection conveyor (16) has its median longitudinal axis (21) lying on a vertical plane substantially coinciding with the vertical plane in which the tilting axis (19) of the furnace (11) lies.