Class / Patent application number | Description | Number of patent applications / Date published |
373079000 | Charging or discharging | 10 |
20080267249 | METHOD TO CONTROL THE FEED OF THE METAL CHARGE FOR ELECTRIC ARC FURNACES - A method is provided to control the feed of a metal charge into an electric arc furnace having at least one electrode to generate an electric arc to melt metals. The method includes: a step of defining a “cover index CI” of the electric arc by the slag present above the liquid metal bath, in order to calculate which of the harmonics present in an electric feed quantity of the furnace are taken into consideration; a step of measuring the actual cover index CI value during a functioning cycle of the furnace; and a step of adjusting the speed of feed of the metal charge into the furnace based on the measured value of the cover index CI. | 10-30-2008 |
20150055673 | APPARATUS FOR CLOSING THE SLAG DOORWAY AND FOR CLEANING THE SLAG DOORWAY AND CHANNEL OF A METALLURGICAL FURNACE AND RELATIVE METHOD - A method and apparatus closing a slag doorway and cleaning the slag doorway and channel of a metallurgical furnace including walls defining a slag doorway and a slag channel that crosses the slag doorway and has a bottom. The apparatus includes a support structure associable with the furnace, at least one slag-breaking body including a lower border that, under mounting conditions of the apparatus on the furnace, is directed towards the bottom and at a definable height, the slag-breaking body being associated with the support structure in a movable manner along the slag channel away and/or towards the slag doorway to wipe, with its lower border, the bottom or a parallel plane, and a vibrating or oscillating mechanism associated with the slag-breaking body to confer a vibrating or oscillating movement with non null component incident the bottom, during a travel performed during its movement away or towards the slag doorway. | 02-26-2015 |
20150139267 | DEVICE AND METHOD TO CONTROL THE CHARGE IN ELECTRIC ARC FURNACES - Device to control the feed of the metal charge in an electric arc furnace, comprising a conveyor associated at the end to a feed mouth provided in said electric arc furnace and, in cooperation with the conveyor, at least a system to detect the point-by-point profile of the metal charge present on the conveyor. | 05-21-2015 |
373080000 | With charge pre-heating | 5 |
20080267250 | Equipment for Measurement and Control of Load Material or Scrap Feeding Into a Furnace and Relative Method - An equipment for the measurement and control of load material and scrap metal feeding into an electrical arc furnace, including an automatic control device for feeding control of load material or scrap according to the energy supplied to the bath, and a measuring device for the added load material, in correlation with the automatic control device, comprising a weighing device for the furnace shell, its contents and any other components it may support. | 10-30-2008 |
20130195138 | HEAT EXCHANGER FOR THE RAPID COOLING OF FLUE GAS OF IRONWORK PLANTS, APPARATUS FOR THE TREATMENT OF FLUE GAS OF IRONWORK PLANTS COMPRISING SUCH A HEAT EXCHANGER AND RELATIVE TREATMENT METHOD - A heat exchanger rapid cooling flue gas of ironwork plants, including: a support structure of at least one module including an inlet manifold and an outlet manifold of the flue gas, mutually opposed and aligned; plural panels that extend between the inlet manifold and the outlet manifold mutually superimposed at a defined distance, pairs of adjacent panels defining flow channels of the flue gas closed laterally by shoulders and including at opposite ends respectively an inlet aperture communicating with the inlet manifold and an outlet aperture communicating with the outlet manifold; circulation ducts of a cooling fluid associated with the panels; and a first selective closing mechanism of the inlet apertures and a second selective closing mechanism of the outlet apertures of one or more of the channels; each of the channels laterally closed by a respective pair of shoulders of which at least one is of removable type. | 08-01-2013 |
20130259082 | PREHEATING APPARTUS FOR STEEL SCRAP AND METALLURGICAL MELTING VESSEL EQUIPPED THEREWITH - A metallurgical melting vessel has a vertical shaft, surrounded by a housing wall, which receives steel scrap. At least one closure element, having laterally spaced-apart fingers extending parallel to one another, is mounted such that it can move between a closed position and an open position. In the closed position, the fingers protrude at least partially into the shaft for the purpose of holding back steel scrap. In the open position, the fingers free the shaft at least to such an extent that the steel scrap can fall from the shaft into the melting vessel. The at least one closure element is mounted so as to be movable from the side of the shaft into the shaft and laterally thereoutof. | 10-03-2013 |
20140010255 | APPARATUS FOR CONVEYING AND PRE-HEATING A METAL CHARGE FOR A MELTING PLANT AND CONNECTED METHOD - Apparatus for continuously conveying and pre-heating a metal charge inside a container of a melting plant, comprising at least a channel for conveying the metal charge, at least a hood disposed above the conveyor channel defining a tunnel and/or an expansion chamber, inside which at least part of the fumes exiting from said container advance, and apertures made in cooperation with lateral walls of said conveyor channel to discharge the fumes. The conveyor channel comprises activator means that divert the fumes and/or delimit the zone occupied by the metal charge of the conveyor channel, and that cooperate longitudinally with at least part of the conveyor channel. | 01-09-2014 |
20160003542 | AUTOMATIC FEEDING APPARATUS FOR ELECTRIC ARC FURNACE - The present invention discloses an automatic feeding apparatus for an electric arc furnace, which comprises an automatic distributing device, wherein said automatic distributing device comprises a distributing tank, and at least one stepwise distributing section which is inclined from high to low along a material delivery direction is provided at the bottom of said distributing tank; and further comprises a thermal feeding device, a cold feeding device, and a loading device. The automatic distributing device of the present invention enables forward throwing of the materials when falling down, which eliminates the problem that the materials are difficult to be dispersed in overall movement, so that the materials can be effectively dispersed by vibration, the stacked materials can be uniformly and continuously distributed in the material tank, and the scrap steel stacking and blocking problems of the materials are prevented from occurring at a throat portion of the feeding apparatus; different thermal feeding devices thereof have advantages such as a good material preheating effect and environment friendliness; and the loading device thereof does not require a crane, so the operation is convenient, of high safety, and suitable for high-frequency material loading, and can satisfy operation frequency demands of continuous feeding for smelting of medium to large-scale electric arc furnaces. | 01-07-2016 |
373081000 | Top charging | 2 |
20140126604 | CHARGING HOPPER SYSTEM AND METHOD OF FILLING - In a charging hopper system of an electric arc furnace with a closure member which can be opened, a hopper-like containment with a discharge opening and at least one suction opening, the closure member closes the precharging chamber, the precharging chamber is separated from the hopper-like containment by a separating wall which can be opened and, in addition, a movable push shield is arranged in the precharging chamber for moving scrap metal from the precharging chamber into the hopper-like containment. | 05-08-2014 |
20150030049 | METHOD FOR MANAGING THE CHARGE IN A MELTING FURNACE AND CORRESPONDING LOADING APPARATUS - Method for managing the metal charge in a melting furnace comprising at least a step of depositing metal materials to be melted in a storage zone, a step of picking up and loading the metal materials from the storage zone onto feed means by means of loading means, and a feed step in which the feed means feed the materials toward the melting furnace. The deposit step provides to divide the storage zone into a plurality of specialized areas in each of which a differentiated type of the metal materials is deposited, and during the pick-up and loading step, a processing device controls and commands the actuation of the loading means which pick up the types of materials from the specialized areas and load them onto the feed means according to a desired modality and quantity. | 01-29-2015 |