An apparatus for feeding and preheating a metal charge toward a melting furnace of a melting plant, comprising at least one conveyor channel for said metal charge, at least one hood disposed above said conveyor channel and scrap detection means able to identify the profile of the metal charge entering said conveyor channel. The present invention also concerns a plant for melting metal comprising said apparatus, and a method to feed and preheat a metal charge.

Method for melting metal material in a melting plant comprising at least an electric furnace having at least a shell into which said metal material is introduced, and feed means to load said metal material into said shell, said method comprising at least a step of loading said metal material into said shell by means of said feed means, a melting step in which said metal material is melted, and a subsequent tapping step in which the molten metal material is tapped.

The present invention belongs to the technical field of metallurgy, and discloses a horizontal continuous feeding preheating device and an enhanced preheating method therefor. The scheme comprises that two dust removal ports are arranged at the front and rear parts of a horizontal continuous feeding preheating duct, and the horizontal continuous feeding preheating duct is divided into an enhanced preheating area and a flue gas preheating area by the two dust removal ports arranged at the front and rear parts of the horizontal continuous feeding preheating duct; burners are installed in the enhanced preheating area, and the two dust removal ports are connected with a flue gas adjusting distributor respectively by a flue gas pipeline; the negative pressure of a second dust removal port is balanced by the efflux fluid dynamic pressure of a plurality rows of burners in the enhanced preheating area; the micro-negative pressure requirement of a first dust removal port is controlled by a pressure sensor, so as to reduce the amount of cold air mixed into the first dust removal port, the steel scrap preheating efficiency of the burners and electric arc furnace flue gas is increased by controlling the flow rate and temperature of mixed flue gas, and the production is made more environment-friendly.

The present application discloses an on-line aluminum scrap remelting device, comprising an aluminum scrap conveying device, a primary aluminum scrap purification device, a remote aluminum scrap transport device, an ultimate aluminum scrap purification device, and a feed remelting device. The application further discloses an on-line aluminum scrap remelting process, comprises machined scrap removal, underground aluminum scrap transport collection, temporary storage, crushing, spin-drying, remote transport, secondary magnetic separation, drying, weighing, remelting, tempering, and use.

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.

Apparatus to heat and transfer mainly metal materials to a melting furnace (12), the apparatus comprising a transporter device (13) configured to move the materials continuously to the melting furnace (12), and at least an induction heating unit (28) associated with the transporter device (13) and configured to heat by electromagnetic induction the materials moved in the transporter device (13), keeping them in a solid state.

A multi-chamber melting furnace for melting scrap of non-ferrous metals, in particular aluminum scrap, including a first shaft furnace with a shaft for charge material, in which impurities of the charge material can be removed, and at least one furnace chamber which is connected to the shaft of the first shaft furnace and has a first heat supply device, wherein at least one second shaft furnace with a shaft for charge material, in which shaft impurities of the charge material can be removed, the furnace chamber being connected to the shaft of the second shaft furnace and being arranged between the shafts in such a manner that the furnace chamber forms a main melting chamber in which the molten bath is located during operation.

Disclosed is a high-temperature flue gas recovery apparatus for a melting furnace, which relates to copper production, including a preheating chamber and a feeding mechanism, a lower end of the preheating chamber being in communication with a feeding port of the melting furnace, the feeding mechanism being disposed above the preheating chamber to deliver feedstock into the preheating chamber, a plurality of layers of buffer mechanisms layered in an upper-lower manner being provided in the preheating chamber, each layer of the buffer mechanism including a buffer element and a drive element, the drive element driving the corresponding buffer element to move such that the feedstock on the buffer element of an upper-layer buffer mechanism falls onto the buffer element of a lower-layer buffer mechanism, a gap allowing a gas to pass through being provided between the buffer mechanisms and an inner wall of the preheating chamber. The solution may recover the high-temperature flue gas produced by the melting furnace to preheat the feedstock, thereby enhancing the energy utilization ratio during the production process; moreover, with the plurality of buffer mechanisms, the solution may charge the feedstock into the melting furnace in small quantity per time and in multiple times, facilitating accurate control of the feeding rate and amount of the feedstock.

A volatiles consuming eductor system for coated scrap metal furnaces with separate delacquering and melt chambers. Motive gas is forced through an inlet into a mixing chamber in a direction opposite a suction port, creating a Venturi that draws gases from the delaquering chamber through the mixing chamber. The motive gas and the drawn gases mix and are forced through a discharge port, ignited, and injected into the melt chamber to help heat the melt chamber. A computer monitors process conditions and controls a regulator that adjusts the motive gas flow in response to those conditions.

The disclosure relates to a melting furnace, for example a two-chamber furnace, for the recovery of aluminum from aluminum scrap. This has a scrap chamber (2), with a dry hearth (6), the surface of which provided for receiving aluminum scrap is arranged above the surface of an aluminum melt (7) located in the scrap chamber (2) during operation of the melting furnace (1), and a heating chamber (3), which has at least one burner (9) for fuel firing, the heating chamber (3) and the scrap chamber (2) being separated from one another by a partition wall (11), the partition wall (11) having at least one opening (12) for recirculation of the aluminum melt (7) between the heating chamber (3) and the scrap chamber (2). Further, a refractory lining of the surface of the dry hearth (6) and/or a refractory lining of the inner wall of the scrap chamber (2) in the region of the dry hearth (6) have channels (18) which can be acted upon by hot gas and are designed to absorb heat from the hot gas and to release it to the aluminum scrap located on the surface of the dry hearth (6) for its thermal pretreatment.