Abstract:
Manipulator for moving a ladle for processing liquid steel, the manipulator comprising a frame with wheels movable along suspended rails, a gripper, such as a pair of parallel hooks, extending from a lower side of the frame, and a hook suspension with a drive for moving the hooks relative to the frame between a lower position and an upper position.
Abstract:
Systems and methods are disclosed that involve, in the operation of an electric arc furnace (EAF), disposing a composition into a container for smelting in the electric arc furnace. The composition may include EAF fines and carbonaceous fines. The systems and methods involve placing the container and a steel precursor into the EAF to react the EAF fines with the carbonaceous fines and melting the container and the steel precursor. Methods for feeding manufacturing by-products to a furnace for melting in the furnace, including filling a container with manufacturing by by-products including at least one of iron and baghouse dust (BHD), the container having a melting point greater than or equal to a melting point of the iron and a melting point of the iron and baghouse dust (BHD). The method further includes securing the container closed with a lid, charging the container into the furnace, and melting, via the furnace, the container, the iron and baghouse dust (BHD) in the furnace.
Abstract:
A method and a system for determining a mass of feedstock discharged by a conveyor during a first time interval Δt are disclosed. The method comprises: taking successive digital images of the feedstock in a specific zone of the conveyor, two successive images being separated by a second time interval δt of smaller duration than the first time interval Δt; for each of the second time intervals δt: - computing the advancing distance of a sub-volume of feedstock during the second time interval δt in the specific zone of the conveyor by numerical treatment of the two successive images associated with the second time interval δt; - determining at least one transversal height profile of the sub-volume of feedstock; - determining an effective feedstock density for the sub-volume of feedstock; and computing the mass of feedstock discharged by the conveyor during the first time interval Δt into the metallurgical furnace on the basis of the advancing distance, the at least one transversal height profile and the effective feedstock density, computed or determined for each of the second time intervals δt.
Abstract:
Systems and methods for recovering rare earth metals from rare earth metal-containing magnets includes fragmenting or commutating the magnets, contacting the commutated magnets with a mixture of low molecular weight carboxylic acids such as formic acid and water, and removing or extracting non-rare earth metal carboxylate phases such as an iron carboxylate (formate) phase from a rare earth metal carboxylate (formate) phase, using a solvent such as water.
Abstract:
A drop-in probe includes a measurement head having an immersion end and an opposing second end having an end face. The measurement head is formed of first and second body halves configured to mate together along a parting line. A sample chamber, arranged within the measurement head, is thermally isolated from a cooling mass thereof and includes a metal wall having a thickness of 2.5 mm or less. An inlet tube has an inlet opening to the sample chamber. The inlet opening has a diameter D iniet and is spaced apart from the end face of the measurement head at a distance of at least formula (1). When the sample chamber is filled with a sample of the molten metal, a ratio of a mass of the metal sample to a mass of the metal wall of the sample chamber is greater than 2.6 and less than 6.
Abstract:
The Invention provides for a pyrometallurgical method for producing a first high grade manganese product by reducing a manganese oxide reactant in a first reaction zone within a closed vessel DC arc furnace, with a reducing agent, in an inert or nitrogen rich atmosphere.
Abstract:
The objective of the present invention is to provide a device and a method which assure accurate and repeatable continuous temperature measurements of steel melt during its solidification when sampling from a tundish in a steel mill using a continuous casting process. The device comprises a measuring cup (2), a protecting element (3), a cup protection element (5), a funnel (6), a holder, a housing protected by a cardboard tube, a thermocouple with a ceramic connector, and a rod to house a compensating cable with a plastic connector. All parts of the device with the exception of the protecting element (3), the cup protection element (5), and the funnel (6) are reusable. The method for determining characteristic temperatures of the liquid steel comprises steps of preheating the measuring cup (2) of the device and covering the steel melt in the measuring cup (2) with a layer of exothermic powder.
Abstract:
Die Erfindung betrifft eine Brenner-Lanzen-Einheit (1) umfassend mindestens zwei Gasanschlüsse (2a, 2b, 2c), ein Brennerrohr (3) und ein konzentrisch zum Brennerrohr (3) in diesem angeordnetes Lanzenrohr (4), wobei das Brennerrohr (3) und das Lanzenrohr (4) jeweils ein Gaseintrittsende und ein Gasaustrittsende (15) aufweisen, wobei das Lanzenrohr (4) an seinem Gasaustrittsende eine Lavaldüse (4a) aufweist, die lösbar mit dem Lanzenrohr (4) verbunden ist, und wobei weiterhin das Brennerrohr (3) eine Brennerdüse (3a) aufweist, die lösbar mit dem Brennerrohr (3) verbunden ist.
Abstract:
Disclosed are a hypereutectic white iron alloy and articles such as pump components made therefrom. Besides iron and unavoidable impurities the alloy comprises, in weight percent based on the total weight of the alloy, from 2.5 to 6.5 C, from 0.04 to 1.2 N and from 18 to 58 Cr and, optionally, one or more of Mn, Ni, Co, Cu, Mo, W, V, Mg, Ca, Si, rare earth elements, Nb, Ta, Ti, Zr, Hf, Al, B.
Abstract:
Die Erfindung betrifft eine Vorrichtung zum vertikalen Anheben und/oder Absenken eines metallurgischen Gefäßes zur Herstellung und/oder Behandlung von flüssigem Metall, wobei ein Gewicht des Gefäßes inklusive des flüssigen Metalls beim Anheben und/oder Absenken im Bereich von 50 bis 350 t, insbesondere im Bereich von 180 bis 350 t, liegt, wobei die Vorrichtung eine Tragkonstruktion mit mindestens zwei, unabhängig voneinander betätigbaren Positionierungselementen in Form von elektromechanischen Gewindespindelantrieben zum Anheben und/oder Absenken des Gefäßes aufweist, wobei die elektromechanischen Gewindespindelantriebe durch elektromechanische Hubzylinder mit Rollengewindetrieb ausgebildet sind.