摘要:
The present invention relates to a melting device comprising a loading shaft (13, 13a) and a tilting device (4) by means of which a furnace vessel (1) with a furnace vessel cover (10) can be tilted into different tilt positions around a tilt axis (5a), wherein the furnace vessel sealing region is formed as a convex, cylindrical mantel section shaped, surface, and the shaft sealing region of the loading shaft (13, 13a) is formed as a complementary concave, cylindrical mantel section shaped, sealing surface, such that sections of the sealing surfaces of the two sealing regions lie mutually opposite one another in the different tilt positions of the tilting device (4) such that the transition region between the loading shaft (13, 13a) and the furnace vessel (1) is at least substantially sealed in all tilt positions of the furnace vessel (1), and to a melting method, in which a bunker container (17, 17a) with charging material (39, 40, 41) is placed in front of the loading shaft (13, 13a) on the loading side, wherein over the further course of this method, the charging material (39, 40, 41) is preheated in the bunker container (17) by furnace gas, and after further transport of this charging material (39, 40, 41) from the bunker container (17, 17a) into the loading shaft (13), this charging material (39, 40, 41) is further preheated in the loading shaft (13) by furnace gas.
摘要:
An apparatus to move and preheat metal material (M) to be fed to a container comprises a containing structure, having an internal compartment and provided with a support wall, a conveyor for the material (M), a fume transit section whose volume reduces as it is distanced from said container along the longitudinal development of said containing structure, and a collector for hot fumes (F) whose volume increases in a manner correlated to said reduction in the fume transit section. The collector is located below said conveyor inside the internal compartment essentially along the entire longitudinal development of said containing structure. Moreover, one or more through apertures are made in said support wall to put the conveyor and the collector into fluidic connection.
摘要:
An arc furnace automatic feeding device comprises an automatic distributing device, wherein the automatic distributing device comprises a distributing groove, and at least one step-like distributing section which tilts from high to low along a material delivery direction is provided at the bottom of the distributing groove; and further comprises a thermal feeding device, a feeding device, and an uploading device. The automatic distributing device enables forward tossing of the materials when falling down, which eliminates the problem that the materials are difficult to be scattered in overall movement, so that the materials can be effectively scattered by vibration, the stacked materials can be uniformly and continuously distributed in the groove, and the waste steel piling problem of the materials is prevented from occurring at a throat portion of the feeding device. Different thermal feeding devices have advantages such as good material preheating effect and environment friendliness. The uploading device does not require a crane, so the operation is convenient, of high safety, and suitable for high-frequency material uploading; and the uploading device can satisfy operation frequency demands of continuous feeding for smelting of medium to large arc furnaces.
摘要:
Die Erfindung betrifft eine Vorrichtung (1) zur Steuerung einer Rückhalteeinheit (3a, 3b) einer Schachtanordnung (3) eines Schmelzofens (2), wobei die Rückhalteeinheit (3a, 3b) zur temporären Fixierung eines Chargierguts (7) in der Schachtanordnung (3) eingerichtet ist, wobei die Schachtanordnung (3) mindestens eine Messeinrichtung (4, 4a, 4b, 4c, 4d, 4e, 4f) zur Analyse mindestens eines Zustandes des Chargierguts (7) aufweist und wobei mindestens eine, mit der mindestens einen Messeinrichtung (4, 4a, 4b, 4c, 4d, 4e, 4f) verbundene Steuereinrichtung (8) vorhanden ist, die mit einer Aktivierungseinheit (31a, 31b) zur Aktivierung der Rückhalteeinheit (3a, 3b) verbunden ist.
摘要:
A plant and relative process for continuously feeding heated metallic material to a melting furnace, according to which, on at least one feeding line defined by a conveyor for continuously advancing the material to the furnace, there is one pair of operative modules defined by a first and a second operative feeding and heating module, the first and second operative modules being positioned in succession with respect to each other along the line, the first module being suitable for forming and directly heating a first layer of the material arranged on the line, and the second module being suitable for forming and directly heating a second layer of the material arranged superimposed with respect to the first layer.
摘要:
An apparatus (10) to feed and pre-heat a metal charge (11) to a melting furnace (12) of a steelworks comprises a feeding and pre-heating tower (14) separate from the melting furnace (12) provided with at least one compartment (13) to temporarily contain said metal charge (11), transfer means (19) to transfer said metal charge (11) to said melting furnace (12) and conveying means (26) to convey the fumes exiting from the melting furnace (12) to said compartment (13). The apparatus (10) also comprises a post-combustion chamber (25), disposed adjacent to and below said compartment (13), and connected on one side to said compartment (13) and on another side to said conveying means (26), the post-combustion chamber (25) being configured to determine the expansion of the fumes introduced by the conveying means (26) and to direct said expanded fumes toward said compartment (13) along a path such as to determine a desired residence time of said fumes suitable to obtain at least the substantial complete combustion of the unburned gases present in said fumes.
摘要:
Die Erfindung betrifft eine Fixiervorrichtung (2) für in einen metallurgischen Schmelzbehälter (4) zu chargierenden Stahlschrott (6), mit einem von einer Gehäusewand (10) umgebenen, zur Aufnahme des Stahlschrotts (6) dienenden vertikalen Schacht (8) und mindestens einem an dem Schacht (8) angeordneten Magneten (12), mit dem der Stahlschrott (6) innerhalb des Schachts (8) fixierbar ist. Außerdem betrifft die Erfindung eine Vorwärmvorrichtung (1) mit einer erfindungsgemäßen Fixiervorrichtung (2).