| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | BRIQUETTE FOR PRODUCING A FOAMED SLAG EFFECT IN EAF TECHNOLOGY IN STAINLESS STEEL PRODUCTION | US13634710 | 2011-01-24 | US20130192422A1 | 2013-08-01 | Johann Reichel; Lutz Rose |
| It is known that a foamed slag can be produced on stainless steel melts in an electric arc furnace by introducing a mixture of metal oxides, limestone, carbon and a binder in the form of briquettes into the furnace so that the briquettes become arranged there in such a way that the metal oxides are reduced by the carbon and the limestone is thermally dissociated at the metal-slag interface beneath the slag and the resulting gases bring about foaming of the slag by bubble formation. This foaming on steels having a high chromium content, due to the significant uptake of chromium oxide by the slag, leads to problems which result from the physicochemical properties of slags having a high chromium oxide content. To provide, according to the invention, briquettes suitable for producing foamed slag having a high chromium oxide content, which is carried out, in particular by the process of WO 2010/003401 A1, all briquette properties to be taken into account and all materials suitable for briquette production are tabulated in the form of a matrix. | ||||||
| 82 | METHOD FOR FOAMED SLAG GENERATION OF A NON-CORROSIVE MELT IN A CONVERTER | US13522637 | 2011-01-05 | US20130019714A1 | 2013-01-24 | Johann Reichel; Lutz Rose |
| In order to carry out foaming of a slag having a high ratio of chromium oxide having values of often above 20% of a non-corrosive melt in an AOD (Argon Oxygen Decarburization) or MRP (Metallurgical Refining Process) converter or CONARC SSt for stainless steel by adding a foam material, according to the invention a previously defined mixture (5) of a metal oxide, iron carrier, carbon and binding material in the form of pellets or briquettes (4) is introduced into the converter, which reacts in a chemically reducing manner under the slag layer (2) due to the high ambient temperature, wherein gaseous carbon monoxide formed in particular by means of the reduction process of the metal oxide with the carbon within the pellets or briquettes (4) induces the slag foaming with the gas bubbles (7) thereof and wherein the specific density of the pellets or briquettes (4) and the resolve time of the reduction process are selected so that optimal bubble formation in respect of size and duration is achieved. | ||||||
| 83 | PROCESS FOR SLAG FOAMING A NON-STAINLESS STEEL MELT IN AN ELECTRIC ARC FURNACE | US13318857 | 2010-05-07 | US20120048065A1 | 2012-03-01 | Johann Reichel; Lutz Rose |
| During the production of non-stainless steel, slag containing a high proportion of metal oxides, primarily iron oxide, is formed during the smelting of the solid material in the electric arc furnace. The concentration of the iron oxide often reaches values of more than 20%. This slag has a poor foaming capability and does not permit the typical characteristics of a carbon steel slag to be achieved. In order to cause such a slag to foam, according to the invention it is proposed to load the electric arc furnace with pellets or briquettes (8) which consist of a defined mixture of an iron oxide carrier and an iron carrier as ballast material, of carbon as reducing agent and also of a binder material, which react in the electric arc furnace in a reducing manner, floating under the slag (7) in the steel melt (6). The reaction gases (12) produced in this way consist primarily of carbon monoxide and advantageously support the foaming of the slag. | ||||||
| 84 | Production of ferro-alloys | US11574649 | 2005-05-20 | US08021458B2 | 2011-09-20 | Veena Sahajwalla |
| A method for producing a ferro-alloy in an electric arc furnace is disclosed. The method comprises the step of charging the furnace with an un-agglomerated carbon-containing polymer such that the polymer functions as a slag foaming agent. | ||||||
| 85 | Method for Controlling Foamed Slag in a Stainless Melt in an Electronic Arc Furnace | US13061014 | 2009-08-07 | US20110146447A1 | 2011-06-23 | Johann Reichel |
| A method for controlling foamed slag in a stainless melt in an electric arc furnace. Slag level in the electric arc furnace is continuously detected thermographically as a function of time and slag level, and an addition of foaming material is controlled depending on the temperature and temperature gradient. | ||||||
| 86 | Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals | US13022741 | 2011-02-08 | US20110126671A1 | 2011-06-02 | 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. | ||||||
| 87 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals | US12719586 | 2010-03-08 | US07883566B2 | 2011-02-08 | 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. | ||||||
| 88 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals | US12489837 | 2009-06-23 | US07674317B2 | 2010-03-09 | 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. | ||||||
| 89 | TITANIUM-CONTAINING ADDITIVE | US12374073 | 2007-08-02 | US20090270243A1 | 2009-10-29 | Djamschid Amirzadeh-Asl |
| A titanium-containing additive, a method for its production and methods of using the additive. | ||||||
| 90 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals | US12165002 | 2008-06-30 | US07553351B2 | 2009-06-30 | Franklin Leroy Stebbing |
| A method of using scrap rubber, such as tires, parts of tires or shredded 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 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. | ||||||
| 91 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals | US11108950 | 2005-04-19 | US07393379B2 | 2008-07-01 | 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. | ||||||
| 92 | Production of Ferro-Alloys | US11574649 | 2005-05-20 | US20080092692A1 | 2008-04-24 | Veena Sahajwalla |
| A method for producing a ferro-alloy in an electric arc furnace is disclosed. The method comprises the step of charging the furnace with an un-agglomerated carbon-containing polymer such that the polymer functions as a slag foaming agent. | ||||||
| 93 | Method for controlling foaming of slag in an electric arc furnace | US11300688 | 2005-12-14 | US20070133651A1 | 2007-06-14 | Ronald Gerhan; Nicolas Lugo; Theodore Kurela |
| A method for controlling the foaming of slag in an electric arc furnace is disclosed. The furnace comprises at least one electrode column. Current is applied to the electrode column, causing an arc to form between the tip of the electrode column and the scrap, melting the scrap. Impurities in the molten scrap metal rise to the surface forming slag. A meter determines the total harmonic distortion associated with the system. If the total harmonic distortion is greater than a predetermined set point, and the scrap metal is sufficiently molten, then a foaming agent is added thereto. | ||||||
| 94 | Method of producing foamed slag | US11405291 | 2006-04-17 | US20060196227A1 | 2006-09-07 | Djamschid Amirzadeh-Asl; Dieter Funders |
| A method of producing foamed slag in an arc furnace by measured blowing of a carbon carrier by means of an oxygen carrier into the boundary layer between the slag and molten metal layers or into zones of the slag or molten metal layer adjacent to the boundary layer in an amount such that arcs are enveloped at least by a foamed slag layer. | ||||||
| 95 | METHOD FOR PRODUCING LOW CARBON STEEL | US10762298 | 2004-01-23 | US20050160876A1 | 2005-07-28 | Michael Riley; William 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. | ||||||
| 96 | Method of judging slag forming state in electric furnace steel production and method of operating electric furnace | US09445960 | 1999-12-16 | US06375701B1 | 2002-04-23 | Katsutoshi Yamashita; Arata Ueda; Toyohito Nakahara |
| The state of slag foaming generated in an electric furnace steel manufacture is judged by measuring the NOx amount in exhaust gas. The foaming state is adjusted to completely interrupt the contact of melted steel with air so that low nitrogen of the steel is always achieved or reduction of electric power consumption rate is achieved. Thus, in the manufacture of steel by subjecting iron scrap to dissolving, refining and heating stages successively in an electric arc furnace, the NOx amount in the exhaust gas is measured at the refining and heating stages of the melted steel and then the state of the slag foaming is judged depending upon the measured data. | ||||||
| 97 | Process for the production of metal melts | US09893729 | 2001-06-29 | US20020005083A1 | 2002-01-17 | Stefan Dimitrov; Norbert Ramaseder; Wilfried Pirklbauer; Yoyou Zhai; Johannes Steins; Ernst Fritz; Johannes Muller |
| 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 educed 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. | ||||||
| 98 | Process for producing a foaming slag above a stainless steel melted in an electric furnace | US08928500 | 1997-09-12 | US06228137B1 | 2001-05-08 | Yves Guillot; Luc Sollier; Olivier Bletton; Frederic Descaves |
| A process for producing a foaming slag above a stainless steel melted in an electric furnace, in which: a powder containing at least one metal oxide and carbon in its composition is introduced into the slag, at least one oxide present in the powder is reduced by its reaction with the carbon to form in the slag bubbles composed of the metal of the metal oxide and of carbon monoxide, the bubbles present in the slag giving rise to a slag in the form of a stable foam. | ||||||
| 99 | Method of producing metal melts and an electric arc furnace therefor | US984972 | 1992-12-03 | US5410566A | 1995-04-25 | Johannes Steins; Harald Berger; Peter Mittag |
| In a method of producing metal melts, in particular a steel melt from scrap, in an electric arc furnace having at least one graphite electrode, organic substances are charged into the electric arc through a central longitudinal recess of the graphite electrode so as to reduce electrode consumption. | ||||||
| 100 | Process for using foamed slag in stainless steel production | US159550 | 1993-12-01 | US5395420A | 1995-03-07 | Pasquale Masucci |
| In the production of stainless steels, it is possible to use foamed slag, with great advantages, by using a metal charge with specific carbon and silicon contents, by insufflating limestone and carbon, by controlling the amount of employed oxygen and by maintaining the basicity index of the slag within specific values. | ||||||
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