序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
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141 | Process for producing a recarburizer carbonaceous product | EP08380340.3 | 2008-12-18 | EP2199365A1 | 2010-06-23 | Rodriguez Reinoso, Francisco; Martinez Escandell, Manuel; Jiménez Mateos, Juan Miguel |
Process for the production of a recarburizer carbonaceous product from pyrolysis and carbonisation of lignocellulosic materials. Furthermore, the invention relates to the recarburizer carbon product produced by said process and its use for the production of casting, founding or steels. |
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142 | VERFAHREN ZUR ERZEUGUNG EINER SCHAUMSCHLACKE IN EINER METALLISCHEN SCHMELZE | EP07702759.7 | 2007-01-15 | EP1979494A1 | 2008-10-15 | REICHEL, Johann; ROSE, Lutz; KARBOWNICZEK, Miroslav |
The invention relates to a method for producing a foamed slag (1) on a metal bath (2) in a metallurgical furnace (3). According to said method, a mixture (4) containing at least one metal oxide and carbon is introduced into the furnace (3), the metal oxide is reduced by means of the carbon below the slag (1) that is located there, and the gases produced during the reduction process form bubbles such that the slag is foamed. In order to optimize the formation of foamed slag, the mixture (4) is delivered into the furnace (3) in such a way that a desired height (h) or a desired section of the height (h) of the layer of foamed slag (1) is generated or maintained. | ||||||
143 | Lime-based additive for steel smelting and the preparation method thereof | EP07255051.0 | 2007-12-27 | EP1939307A2 | 2008-07-02 | Li, Jizong c/o Qingdao Deshipu Metallurgy; Kim, Jaemu c/o Qingdao Deshipu Metallurgy; Du, Hao c/o Qingdao Deshipu Metallurgy |
This invention belongs to ferrous metallurgy field, and in particular relates to a lime-based additive for steel smelting which is used in the electric furnace refining and steel casting process for carbureting and deoxidation and the preparation method thereof. The lime-based additive for steel smelting comprises lime-based material and carbonaceous material, wherein the content of the lime-based material is 40-80 wt % relative to the total amount of the additive, and the remaining is the carbonaceous material; the lime-based material is a passivated CaO powder with a low flowability, or the mixture of the passivated CaO powder and CaCO3 powder, and the carbonaceous material is at least one of the coke, graphite, semi-coke powder and coal with carbon content not less than 85 wt%. When the additive has a shape of pellet, and it further comprises 1-5 wt% of agglomerant which has a microstructure of strip, streak or dendritic, and is at least one of MgO, Al2O3, and CaCO3. Compared with the prior art, the lime-based additive according to this invention is advantageous in that: it is low in cost, significantly and steadily carburets the molten steel, eliminates the free and compound oxygen in molten steel, and decrease the nonmetallic impurities in the steel, so the steel is improved in terms of the mechanical performances. |
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144 | VERFAHREN ZUR HERSTELLUNG KORROSIONSBESTÄNDIGER STÄHLE UND KORROSIONSBESTÄNDIGEN GUSSEISENS DURCH EIN LEGIEREN MIT POLYMERISIERTEM, FULLERENARTIGEM KOHLENSTOFF | EP03773877.0 | 2003-10-29 | EP1558768A1 | 2005-08-03 | Kasuba, János |
The invention relates to a method for the production of corrosion-resistant steels and cast irons, wherein 30-90 % of the required carbon content is introduced as polymerized, fullerene-like carbon, more precisely outside the melting device in a vacuum pot, wherein overheating temperature of the steel above liquidus temperature is lower in comparison with conventional steel production processes and cooling below solidus temperature occurs relatively fast. | ||||||
145 | MITTEL UND SEINE VERWENDUNG ZUR BEHANDLUNG VON ROHEISEN- UND GUSSEISENSCHMELZEN ZUM ZWECK DER ENTSCHWEFELUNG | EP95938305.0 | 1995-12-07 | EP0745143B2 | 2002-09-25 | WIESBÖCK, Rainer; SOTRIFFER, Albrecht; ZIMMERMANN, Johann |
An agent for treating pig or cast iron melts for desulphurisation purposes has 15 to 95 % by weight calcium carbide and/or calcium oxide, the residue being at least one type of ash from biomass incineration such as wood ashes, coarse ashes, fluidised bed ashes, flying ashes or combustion chamber ashes. | ||||||
146 | PROCEDE DE DENITRURATION DE L'ACIER EN FUSION EN COURS D'ELABORATION | EP99959490.6 | 1999-12-17 | EP1141422A1 | 2001-10-10 | MAILHAN, Jean-Christophe; PERNET, Daniel |
The invention concerns a method which consists in injecting into a molten metal bath to be treated, jointly but separately into the same bath zone, oxygen and carbon in a form capable of being blown (powder carbon preferably) so as to generate locally in the bath Co bubbles from those two elements, which will then be loaded in denitriding nitrogen. A stoichiometric adjustment of the carbon and oxygen inputs enable a constant carbon denitriding in the bath. The method is preferably applicable to the production of low-carbon steel grades, in particular in an electric oven. | ||||||
147 | Verfahren zum Zuführen von Wärmeenergie in eine Metallschmelze | EP88116862.9 | 1988-10-11 | EP0311978B1 | 1991-06-19 | Weber, Ralph; Wells, William |
148 | Dispositif d'adaptation pour tuyère d'accélération de particules solides | EP85630080.1 | 1985-05-14 | EP0165198B1 | 1990-07-04 | Bock, André |
149 | VERFAHREN UND VORRICHTUNG ZUM DETEKTIEREN VON SCHLACKE | EP85905609.5 | 1985-10-17 | EP0198910B1 | 1989-10-11 | THEISSEN, Wolfgang; JULIUS, Edmund; BLOCK, Franz, Rudolf |
A process and device for detecting accompanying slag in steel melts when casting from metallurgical vessels, especially in continuous casting. When pouring steel from a converter, a ladle or intermediate vessel, efforts are made, for metallurgical reasons, not to entrain also the slag present on the surface of the melt. The process described ensures that only a small proportion of slag is present without it being necessary to remove the protection of the casting line or interfer with the casting process, by measuring changes in the electrical conductivity, of the steel by means of electromagnetic fields. For this, one or several stationary emitting and receiving coils (3 or 4) are arranged around the continuous casting line (5). The emitting coils (3) are supplied with a current of several frequencies, so that the voltage induced in the receiving coils (4) can be evaluated on a frequency-selective basis according to the value and phase position. To increase sensitivity, the measurement recorder is used in a bridge circuit. On the basis of the value and phase position of the voltage induced in the measurement coils (4) the change in the electrical conductivity of the casting line (5), and thus the slag content, is determined. Temperature-dependent errors are substantially avoided. | ||||||
150 | Lance for accelerating solid particles | EP85630080 | 1985-05-14 | EP0165198A3 | 1987-03-18 | Bock, André |
151 | Dispositif d'accélération de particules solides | EP84630036.6 | 1984-03-08 | EP0125198A1 | 1984-11-14 | Schleimer, François; Burton, Clement; Bock, André; Peckels, Jean |
Un dispositif d'accélération de particules solides en supension dans un gaz comporte une source de gaz sous pression, des moyens de dosage du gaz et des particules solides et des conduits d'amenée du mélange gaz/particules solides qui débouchent sur une tance. Les conduits d'amenée ou la lance présentent des parties sur lesquelles la section varie. L'angle que fait l'axe du conduit ou de la lance avec une tangente, se trouvant dans un plan passant par l'axe du conduit ou de la lance, au profil intérieur du conduit ou de la lance varie sur au moins 5 m la long du conduit ou de la lance. Dans une variante préférentielle, uniquement le profil de la lance présente ladite variation d'angle; l'angle peut augmenter continûment sur au moins 5 m en direction de l'embouchure ou alors être d'abord négatif, augmenter continûment, passer par zéro et augmenter continûment en direction de l'embouchure. |
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152 | Process for producing steel in a converter from pig iron and ferrous scrap | EP83200368.5 | 1983-03-17 | EP0090452A1 | 1983-10-05 | Kreijger, Pieter Job; Bührmann, Gerardus Phillipus |
A process of producing steel in a converter, wherein the starting materials comprise pig iron and ferrous scrap, involves blowing of oxygen into the molten metal bath in the converter. Advantageous results, in particular savings of Fe and Mn and in the amount of liquid metal used, are obtained by the combination of the following process steps:
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153 | METHOD FOR MAKING STEEL IN AN ELECTRIC ARC FURNACE | EP16835528.7 | 2016-07-25 | EP3336204A1 | 2018-06-20 | YANTOVSKY, Pavel Rudolfovich; SMIRNOV, Konstantin Gennadievich |
Die Erfindung bezieht sich auf die Metallurgie, und zwar auf ein Verfahren zur Stahlerzeugung im Lichtbogenofen. Das bekannte Verfahren zur Stahlschmelze im Lichtbogenofen umfasst mindestens eine Begichtung des Wärmeraums des Ofens mit festem Eisensatz und mindestens festem kohlenstoffhaltigen Material, Schmelzen des Beschickungsguts mittels der Lichtbögen und Kohlung des Metalls mittels fester kohlenstoffhaltiger Materialien im Laufe des Schmelzvorgangs sowie das Abstechen von Metall und Schlacke aus dem Ofen. Erfindungsgemäß wird vorgeschlagen, den Schmelzprozess unter Zugabe von hochgekohltem Karbonisiermittel in Form einer flüssigen Phase des in der Brennzone der Lichtbögen reduzierten Eisens im Wärmeraum des Ofens zu führen, um eine zusätzliche Metallkohlung zu erreichen. Dabei wird das hochgekohlte Karbonisiermittel aus Eisenoxiden und einem kohlenstoffhaltigen Material gewonnen. Eisenoxide und das kohlenstoffhaltige Material werden in die Brennzone der Lichtbögen eingebracht. Die Größe der Brennzone darf dabei D=dA+6del. nicht überschreiten, wobei dA der Durchmesser der Elektrodenauflösung und dei. der Elektrodendurchmesser sind. Der gesamte Kohlenstoffanteil im ungebundenen sowie im aufgelösten Zustand in der flüssigen Eisenphase beträgt max. 30%. Der gesamte Karbonisiermittelverbrauch pro Schmelze beträgt max. 20% der Eisensatzmasse. Das Karbonisiermittel wird in den Wärmeraum des Ofens kontinuierlich oder periodisch im Laufe des Schmelzvorgangs des Beschickungsguts eingebracht. Die Einbringung des Karbonisiermittels wird gleichzeitig mit dem Schmelzen des Beschickungsguts begonnen. Durch die Anwendung der Erfindung wird die Ausbeute des flüssigen Metalls dank der Regelung des Kohlenstoffanteils im Laufe des Schmelzvorgangs, der Steigerung des Metallkohlungsgrads sofort ab Schmelzbeginn sowie der Verminderung des Eisenabbrands zur Schlacke und zum Rauch erhöht. |
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154 | METHOD FOR PRODUCING MANGANESE CONTAINING FERROALLOY | EP14825167.1 | 2014-12-16 | EP3084019B1 | 2018-05-02 | KROGERUS, Helge; MÄKELÄ, Pasi; KIVINEN, Visa |
To produce manganese containing ferroalloy for steel production, an agglomeration mixture is produced which comprises chromite ore concentrate and manganese ore fines with a grain size smaller than 6-9 mm. The mixture is agglomerated to produce green agglomeration products, such as pellets or other types of agglomerates. The green agglomeration products are sintered in a steel belt sintering furnace to produce either sinter or sintered pellets. The sinter or sintered pellets are smelted in a submerged arc furnace to produce manganese and chromium containing ferroalloy. The ferroalloy produced by the method comprises 6.0-35 w-% manganese and 31-54 w-% chromium. | ||||||
155 | COMPOSITE BRIQUETTE AND METHOD FOR STEELMAKING OR IRONMAKING FURNACE CHARGE | EP14184581.8 | 2014-09-12 | EP2949765A1 | 2015-12-02 | Vayda, Pierre |
A briquette for addition to the charge in a steelmaking or ironmaking furnace comprises at least 15 % by weight of magnesium carbonate, and a binder. |
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156 | METHODS FOR TREATING AN OFFGAS CONTAINING CARBON OXIDES | EP13778904 | 2013-03-15 | EP2838844A4 | 2015-10-28 | NOYES DALLAS B |
A method of treating an offgas includes purifying the offgas to remove particulate matter, water, undesirable gaseous components and inert gases to produce a dried carbon oxide gas feedstock, and converting at least a portion of carbon oxides in the dried carbon oxide gas feedstock into solid carbon. In other embodiments, a method includes passing a dried carbon oxide gas feedstock through a multi-stage catalytic converter. A first stage is configured to catalyze methane-reforming reactions to convert methane into carbon dioxide, carbon monoxide and hydrogen with residual methane. A second stage is configured to catalyze the Bosch reaction and convert carbon oxides and hydrogen to solid carbon and water. | ||||||
157 | PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS | EP09823351.3 | 2009-10-30 | EP2343390B1 | 2015-08-19 | UEDA, Masaharu; SEKI, Kazunori; SATOU, Takuya; YAMAMOTO, Takeshi |
158 | METHODS FOR TREATING AN OFFGAS CONTAINING CARBON OXIDES | EP13778904.6 | 2013-03-15 | EP2838844A1 | 2015-02-25 | NOYES, Dallas, B. |
A method of treating an offgas includes purifying the offgas to remove particulate matter, water, undesirable gaseous components and inert gases to produce a dried carbon oxide gas feedstock, and converting at least a portion of carbon oxides in the dried carbon oxide gas feedstock into solid carbon. In other embodiments, a method includes passing a dried carbon oxide gas feedstock through a multi-stage catalytic converter. A first stage is configured to catalyze methane-reforming reactions to convert methane into carbon dioxide, carbon monoxide and hydrogen with residual methane. A second stage is configured to catalyze the Bosch reaction and convert carbon oxides and hydrogen to solid carbon and water. | ||||||
159 | PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS | EP09823351 | 2009-10-30 | EP2343390A4 | 2014-06-25 | UEDA MASAHARU; SEKI KAZUNORI; SATOU TAKUYA; YAMAMOTO TAKESHI |
160 | DEVICE AND METHOD FOR FEEDING METAL MATERIAL INTO A MELTING PLANT | EP10805824.9 | 2010-12-01 | EP2510296A1 | 2012-10-17 | BENEDETTI, Gianpietro; POLONI, Alfredo |
Device for feeding metal into melting plant, in particular into melting furnace including hearth and lateral aperture. Device includes means to feed metal terminally associated with a connection conveyor including a loading plane and cooperating with translation and positioning means. Connection conveyor able to assume first position during continuous loading step, wherein its front terminal end is located substantially flush with the furnace internal wall through the aperture, to introduce metal inside the furnace; a second position distanced from the furnace wall during the step of tapping liquid metal from the furnace; and a third position while first loading the furnace, with the furnace switched off, wherein its loading plane front end is inside the furnace volume to be disposed in proximity to the distal internal wall opposite the furnace proximal internal wall, to unload and distribute a charge to cover at least part of the furnace bottom surface. |