| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | METHOD FOR THE REDUCTION OF A SLAG HAVING A HIGH DEGREE OF CHROMIUM IN AN ELECTRIC ARC FURNACE | US12449424 | 2008-01-10 | US20100089202A1 | 2010-04-15 | Johann Reichel; Lutz Rose |
| During the production of stainless steel, a slag is formed during the melting of the solid material in the electric arc furnace, the slag having a high degree of metal oxides, particularly chromium oxide. The chromium concentration often reaches values of more than 30%. Currently, such slags cannot be reduced to a desired degree due to their composition. In order to minimize the resulting high loss of recyclable material, the invention provides to charge the electric arc furnace with pellets, or briquettes (8), which are made of a defined mixture of an iron carrier as the ballast material, carbon, or carbon and silicon, as the reducing agent, and a binder, wherein they react beneath the slag layer (7) in the steel melt (6) with the metal oxides of the slag (7), particularly with the chromium oxide present, in a floating, chemical, and reducing manner. The reaction gases (12) produced in the process, which are mainly made of carbon monoxide, advantageously support a foaming of the slag (7). | ||||||
| 122 | Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals | US12489837 | 2009-06-23 | US20090255374A1 | 2009-10-15 | Franklin Leroy Stebbing |
| A method of using scrap rubber and other scrap materials, such as tires or parts or pieces of tires, to manufacture or melt steel and other metals in a furnace is disclosed. The scrap rubber may be used as a carbon source for the manufacture of steel and other metals, and may be used as an energy source to melt the scrap metal used to make the steel and other metals. The net benefit of this method includes reducing the amount of scrap rubber, such as tires, to be sent to a waste disposal facility or landfill, thereby improving the environment. In addition, by increasing the use of scrap rubber as a source of energy for steel or metal production, less energy is required from other sources. | ||||||
| 123 | Method for utilizing slag | US11280679 | 2005-11-16 | US07597736B2 | 2009-10-06 | Alexander Fleischanderl; Udo Gennari |
| In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gas over an extended period of time, discharging the treated slag and optionally subsequently the discharging iron melt, whereby a residual iron melt containing dissolved carbon is left in the reactor vessel. | ||||||
| 124 | Manufacture of Ferroalloys | US11920405 | 2006-06-01 | US20090173187A1 | 2009-07-09 | Andrew Miller Cameron |
| A ferroalloy, particularly stainless steel, is made by melting typically low-carbon steel under foamy slag conditions, and refining the molten steel at least in part by blowing molecular oxygen into the molten steel from a lance positioned above its surface. During the refining step at least one metallurgically acceptable particulate material is introduced into the molten steel. The particulate material is selected from chromium metal, chromium-containing alloys and chromium ores. | ||||||
| 125 | Equipment for Measurement and Control of Load Material or Scrap Feeding Into a Furnace and Relative Method | US11887871 | 2006-04-07 | US20080267250A1 | 2008-10-30 | Paolo Argenta; Silvio Reali; Claudio Lodati |
| 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. | ||||||
| 126 | Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals | US12165002 | 2008-06-30 | US20080257105A1 | 2008-10-23 | Franklin Leroy Stebbing |
| A method of using scrap rubber, such as tires or parts of tires, to manufacture or melt steel and other metals includes inserting into a furnace at a more precise and controlled rate, time, and location the scrap rubber. The controlled rate of insertion into the furnace, as opposed to batch feeding them, permits the use of larger quantities of scrap rubber. The net benefit includes reducing the amount of scrap rubber, such as tires, to be sent to a waste disposal facility or landfill, thereby improving the environment. In addition, by increasing the use of scrap rubber as a source of energy for steel or the metal production, less energy is required from other sources. The invention further allows the scrap rubber to be put into the furnace separate from the scrap metal that is also to be put into the furnace, thereby eliminating the known methods and techniques of combining of the scrap rubber with the steel or scrap metal prior to the placement of the scrap rubber and scrap metal into the furnace. The invention further allows the carbon monoxide that is being formed by the foamy slag process in the furnace to convert to carbon dioxide with additional heat generation inside of the furnace—a result of the catalytic effect of the tires. | ||||||
| 127 | Method for producing foamed slag on high-chromium melts in an electric furnace | US10557190 | 2004-04-23 | US20060260435A1 | 2006-11-23 | Lutz Rose; Johann Reichel |
| The invention relates to a method for producing foamed slag on high-chromium steel melts in an electric furnace, whereby a mixture consisting of a metal oxide and carbon is introduced into the furnace, the metal oxide in the slag is reduced by the carbon, and the gases created in the slag form bubbles which thus foam up the slag. In order to be able to control the gas formation and thus the foaming process, the mixture consisting of a metal oxide and carbon and optionally an iron carrier is introduced as preforms, such as pellets, which are compressed and/or provided with a binding agent. The gas formation can be controlled in terms of location, type and time, by adjusting the characteristics of the pellets, especially the density and/or compression characteristics thereof. | ||||||
| 128 | Method for utilizing slag | US11280679 | 2005-11-16 | US20060065071A1 | 2006-03-30 | Alexander Fleischanderl; Udo Gennari |
| In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gas over an extended period of time, discharging the treated slag and optionally subsequently the discharging iron melt, whereby a residual iron melt containing dissolved carbon is left in the reactor vessel. | ||||||
| 129 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals | US11108950 | 2005-04-19 | US20050229743A1 | 2005-10-20 | Franklin Stebbing |
| A method of using scrap rubber, such as tires or parts of tires, to manufacture or melt steel and other metals includes inserting into a furnace at a more precise and controlled rate, time, and location the scrap rubber. The controlled rate of insertion into the furnace, as opposed to batch feeding them, permits the use of larger quantities of scrap rubber. The net benefit includes reducing the amount of scrap rubber, such as tires, to be sent to a waste disposal facility or landfill, thereby improving the environment. In addition, by increasing the use of scrap rubber as a source of energy for steel or the metal production, less energy is required from other sources. The invention further allows the scrap rubber to be put into the furnace separate from the scrap metal that is also to be put into the furnace, thereby eliminating the known methods and techniques of combining of the scrap rubber with the steel or scrap metal prior to the placement of the scrap rubber and scrap metal into the furnace. The invention further allows the carbon monoxide that is being formed by the foamy slag process in the furnace to convert to carbon dioxide with additional heat generation inside of the furnace—a result of the catalytic effect of the tires. | ||||||
| 130 | Method for producing low carbon steel | US10762298 | 2004-01-23 | US06932854B2 | 2005-08-23 | Michael Francis Riley; William John Mahoney |
| A method for producing low carbon steel wherein molten steel is decarburized in a three stage refining procedure comprising a first stage wherein oxygen is provided for decarburization enveloped in a gas shroud, a second stage wherein oxygen is provided for decarburization enveloped in a flame shroud, and a third stage wherein inert gas or oxygen and inert gas is provided enveloped in a flame shroud. | ||||||
| 131 | Slag composition | US10271083 | 2002-10-15 | US06793708B1 | 2004-09-21 | Jeremy A. T. Jones; William J. West; Frank L. Kemeny |
| A slag composition containing from about 85 to about 99 weight percent of steelmaking slag and from about 1 to about 15 weight percent of a foaming additive. The steelmaking slag is at a temperature of from about 2500 to about 3100 degrees Fahrenheit. The foaming additive contains from about 20 to about 80 weight percent of a source of elemental carbon, from about 5 to about 80 weight percent of calcium carbide, and from about 25 to about 75 weight percent of anoxide compound. The weight ratio of the source of elemental carbon to the calcium carbide is at least 2. | ||||||
| 132 | Plant for the production of metal melts | US09258755 | 1999-02-26 | US06264883B1 | 2001-07-24 | Stefan Dimitrov; Norbert Ramaseder; Wilfried Pirklbauer; Yoyou Zhai; Johannes Steins; Ernst Fritz; Johannes Müller |
| To be able to produce metal melts using any metal carriers incurring in metallurgical practice as the charging materials, namely in the most diverse quantitative compositions, a plant for producing metal melts is provided with the following characteristic features: an electric arc furnace vessel (1) provided with one charging opening (11, 21) for a metal melt and/or scrap and/or direct reduced metal, in particular direct reduced iron, and/or ore and at least one electrode (16) and one slag tapping means (22), an oxygen-blowing converter vessel (3) provided with one melt tapping means (41), wherein the oxygen-blowing converter vessel (3) and the electric arc furnace vessel (1) form a unit which is connected via an overflow weir (34) and which is rigidly mounted on the foundation and, wherein the bath surface related specifically to the bath volume is smaller in the oxygen-blowing converter vessel (3) than in the electric arc furnace vessel (1) and the oxygen-blowing converter vessel (3) shares a common reaction space with the electric arc furnace vessel (1), which space is arranged above the bath level of these vessels. (FIG. 1). | ||||||
| 133 | Process and apparatus for the manufacture of steel | US914607 | 1997-08-18 | US5885325A | 1999-03-23 | Gordon H. Geiger; Asish K. Sinha; Achilles Vassilicos; Zhiyou Du |
| A two stage reaction for the production of steel from iron carbide is carried out in two separate but interrelated reactors. In the first reactor, iron, carbide, with slag formers, is fed into a feed end and the reaction is well-mixed by the vessel geometry, the stirring action below-surface injection of oxygen and iron carbide feed, and the evolution of gases from the liquid metal bath. The product, containing about 0.5-2% carbon, is fed into the second reactor where it is refined with subsurface-injected oxygen. The second reaction is autogenous, and the evolved carbon monoxide is fed to the first reactor where it is burned with oxygen in a foamy slag, which, with post-combustion burning in the slag of CO evolved in the first reactor, and with iron carbide preheating with the sensible heat of the off-gas from the first reaction, makes that reaction also essentially autogenous. | ||||||
| 134 | Production of ferroalloys | JP2007528506 | 2005-05-20 | JP5594936B2 | 2014-09-24 | サハユワラ・ベーナ |
| 135 | Titanium-containing additive | JP2009522282 | 2007-08-02 | JP5574707B2 | 2014-08-20 | アミルザデー−アスル ジャムシド |
| 136 | Apparatus and method for the measurement and control of the charging material or scrap metal into the furnace | JP2008505835 | 2006-04-07 | JP5449766B2 | 2014-03-19 | パオロ アルジェンタ; シルヴィオ レアリ; クラウディオ ロダリ; フェリー マウロ ビアンキ |
| 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. | ||||||
| 137 | Improvements in the production of ferro-alloys | JP2010506775 | 2008-05-07 | JP5439364B2 | 2014-03-12 | シャハジワラ，ビーナ |
| 138 | How to generate a foaming slag in the molten metal | JP2008552708 | 2007-01-15 | JP5079710B2 | 2012-11-21 | ライヒェル・ヨーハン; ローゼ・ルッツ; カルボフニチェック・ミロスワフ |
| 139 | A method for controlling the foaming slag of stainless molten metal in the electric arc furnace | JP2011524178 | 2009-08-07 | JP2012500898A | 2012-01-12 | ライヒェル，ヨハン |
| 本発明は、電気アーク炉内でステンレス溶湯の発泡スラグを制御するための方法に関する。 本発明によれば、電気アーク炉内のスラグ高さがサーモグラフィで時間およびスラグ高さの関数として連続的に検出され、温度および温度勾配に依存して発泡材料の添加が制御される。
【選択図】図１ |
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| 140 | Production of ferroalloys | JP2011524139 | 2009-08-28 | JP2012500897A | 2012-01-12 | キャサリン、ルイーズ、スキッドモア; ジョナサン、デイビッド、ディッカー; ポール、アンソニー、ビールハウアー; ポール、ジェームズ、オケイン |
| フェロアロイ、例えば鋼、を電気アーク炉または他の好適な冶金用炉中で製造する方法が開示される。 本方法は、（ａ）スラグ発泡剤として作用可能な炭素含有ポリマーと（ｂ）別の炭素供給源の混合物を、該方法の電源投入段階の少なくとも一部の際に、該炉の中に供給することを含んでなる。 冶金用炉も開示される。 | ||||||
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