| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075100460 | Adding solid treating agent, slag or flux | 14 |
| 20130160606 | CONTROLLABLE SOLIDS INJECTION - The present invention relates to formation of a controllable, high velocity, pneumatic stream of particulate solids which can be injected into a furnace containing, for instance, a liquid such as a bath of molten metal. | 06-27-2013 |
| 075100470 | Magnesium(Mg) or compound thereof | 3 |
| 20100037728 | METHOD FOR REDUCING CHROMIUM CONTAINING RAW MATERIAL - An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C. | 02-18-2010 |
| 20110154946 | METHOD FOR PRODUCING FOAMED SLAG - 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 arc are enveloped at least by a foamed slag layer. | 06-30-2011 |
| 20140033866 | METHOD FOR TREATING SPHEROIDAL GRAPHITE IRON AND POURING DEVICE THEREOF - A method for treating spheroidal graphite iron includes the step: pouring molten spheroidal graphite iron into a pouring electrical furnace ( | 02-06-2014 |
| 075100480 | Aluminum(Al) or compound thereof | 1 |
| 20110197708 | Process for Producing Foamed Slag - A process and material for producing foamed slag by which the foaming of a slag with a high chromium oxide content can be achieved. An electric arc furnace is charged with a mixture of metal oxides and carbon and, below the slag at the metal-slag interface, the metal oxide is reduced by carbon and limestone and becomes thermally discordant. The occurring gases cause the slag to foam due to the formation of bubbles. | 08-18-2011 |
| 075100500 | Silicon(Si) or compound thereof | 1 |
| 075100530 | With lime present | 1 |
| 20140318313 | METHOD FOR RECOVERING VALUABLE METAL - Provided is a method for increasing the rate of recovery of valuable metals when waste batteries batteries are treated by a dry process. The valuable metal recovery method in the dry step S | 10-30-2014 |
| 075100590 | Carbon(C) containing material (e.g., Carbon, carbonaceous material, Carbide, etc.) | 8 |
| 20100192726 | METHOD FOR REDUCTION TREATMENT OF ELECTRIC FURNACE DUST - It is an object of the present invention to provide a method of compacting a powdery mixture of electric furnace dust and a carbonaceous material into a briquette and subjecting the briquette to a thermal reduction treatment in a rotary hearth furnace, the method being capable of ensuring a strength of the briquette resistant to a handling in a course after the compacting through until it is set in the rotary hearth furnace, and reducing energy necessary for drying of the briquette while preventing bursting thereof in the rotary hearth furnace. The method comprises the steps of: adding a carbonaceous material B and a binder C, and optionally water, to electric furnace dust A generated in a steelmaking electric furnace | 08-05-2010 |
| 20100218644 | Method of Producing Metals and Alloys by Carbothermal Reduction of Metal Oxides - A method of producing metals and alloys, the method comprising heating raw materials comprising at least one metal oxide, and agglomerates comprising a carbonaceous reducing agent and a cured binder to effect reduction of the metal oxide to the metal, wherein each agglomerate has at least one molded open channel, and an apparent density not greater than 99% of the apparent density of an identical agglomerate except without the channel. | 09-02-2010 |
| 20140352494 | METHODS AND SYSTEMS FOR PRODUCING FERRO-CHROME IN A DUPLEX FURNACE - A method for producing a high purity high carbon molten chrome product from chrome and carbon bearing material, said method comprising the steps of: (a) continuously introducing chrome compacts directly into an electric melter; (b) heating and melting the chrome compacts in the electric melter at a temperature of between about 1300° C. to about 1700° C. to form high carbon molten chrome; (c) preventing oxidation of the high carbon molten chrome via minimization of the ingress of oxygen containing gas in said heating step; (d) carburizing the high carbon molten chrome to form high carbon molten metallized chrome; (e) purifying the high carbon molten metallized chrome by reducing silicon oxides to silicon and desulfurizing the high carbon molten metallized chrome to produce the high purity high carbon molten chrome product; and (f) discharging the high purity high carbon molten chrome product from the electric melter. | 12-04-2014 |
| 075100600 | Producing or treating Iron(Fe) or Iron alloy | 5 |
| 20080257105 | Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals - 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. | 10-23-2008 |
| 075100610 | With electric arc | 4 |
| 20080314198 | Method of Melting A Mixture of Scrap Metal Using Scrap Rubber - A process for melting scrap metal for producing steel which includes the steps of combining a quantity of scrap metal containing steel and at least about 0.25 percent by weight of scrap rubber in an electric arc furnace. Energy is then applied to the quantity of steel and scrap rubber in the furnace to start the combustion of the scrap rubber to add additional heat for melting the scrap metal containing steel. | 12-25-2008 |
| 20100147108 | Production of Ferro-Alloys - A method for producing a Ferro-alloy in an electric arc furnace is disclosed. The method comprises the steps of removing steel from a carbon-containing organic material, and charging the furnace with the carbon-containing organic material product. | 06-17-2010 |
| 20100180723 | METHOD FOR MANUFACTURING MOLTEN IRON - A method for manufacturing molten iron includes a step of charging a carbonaceous material, a flux, and solid reduced iron obtained by thermally reducing carbon composite iron oxide agglomerates into an arc melting furnace and melting the solid reduced iron using arc heating in the melting furnace while an inert gas is blown into a molten iron layer contained in the melting furnace from a bottom blowing tuyere disposed on a bottom of the melting furnace to stir the molten iron layer, wherein the carbonaceous material is charged so that a carbonaceous material suspending slag layer in which the carbonaceous material is suspended is formed in an upper portion of a slag layer formed on the molten iron layer by slag produced when the solid reduced iron is melted into the molten iron and so that a carbonaceous material coating layer composed of only the carbonaceous material is further formed on the carbonaceous material suspending slag layer, and the molten iron and the slag stored in the melting furnace are tapped from a tap hole formed in a lower portion of a furnace wall of the melting furnace. | 07-22-2010 |
| 20130000446 | METHOD FOR PRODUCING FOAMED SLAG ON HIGH-CHROMIUM MELTS IN AN ELECTRIC FURNACE - 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. | 01-03-2013 |
