| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075100390 | Adding gaseous treating agent | 10 |
| 20100126309 | METHOD FOR RECOVERING MOLYBDENIUM, NICKEL, COBALT OR THEIR MIXTURES FROM USED OR REGENERATED CATALYSTS - The invention describes a method for recovering molybdenum, nickel, cobalt or their mixtures from used or regenerated catalysts in an electric arc furnace containing a heel of liquid cast iron, surmounted with a fluid slag, comprising the following steps: a) adding used or regenerated catalysts into the heel contained in the electric arc furnace, b) adding dosed lime in order to obtain a slag with a CaO to Al | 05-27-2010 |
| 20100326238 | COMPOSITIONS OF MATTER: SYSTEM II - The present invention relates to new compositions of matter, particularly metals and alloys, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique electronic character. | 12-30-2010 |
| 075100400 | Gas contains gaseous Oxygen | 4 |
| 20100282021 | COMBINED BURNER AND LANCE APPARATUS FOR ELECTRIC ARC FURNACES - Process and apparatus for melting raw material in an electric arc furnace using a flame of variable direction, the apparatus comprising a burner and a lance whereby the lance outlet opening and the burner outlet opening are not concentric and are located at a distance from one another, and whereby the lance axis forms an angle with the burner axis in the range from 10° to 40. | 11-11-2010 |
| 075100410 | Producing or treating Iron(Fe) or Iron alloy | 3 |
| 20090019968 | Removal Method of Nitrogen in Molten Steel - Molten steel is refined in an electric furnace by using iron scrap as a main iron source, and is tapped into a separate refining vessel. Thereafter, metallic-Al containing material and CaO are added onto a bath surface of the molten steel, and an oxygen containing gas is supplied to the molten steel. Thereby, a nitrogen-removal reaction utilizing an AlN formation reaction is caused to proceed. Consequently, even in the case of molten steel having a low carbon content, a low-nitrogen steel can be refined and produced at low costs. | 01-22-2009 |
| 20110239822 | PRODUCTION OF FERRO-ALLOYS - A method for producing a ferro-alloy, such as steel, in an electric arc furnace or other suitable metallurgical furnace is disclosed. The method comprises supplying a mixture of (a) a carbon-containing polymer that is capable of acting as a slag foaming agent and (b) another source of carbon into the furnace during at least a part of a power-on phase of the method. A metallurgical furnace is also disclosed. | 10-06-2011 |
| 075100420 | With charge melting by electrothermal energy | 1 |
| 20090173187 | Manufacture of Ferroalloys - 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. | 07-09-2009 |
| 075100430 | Hydrogen or Water vapor | 2 |
| 20150329931 | METHOD FOR STORING DISCONTINUOUSLY PRODUCED ENERGY - A method for temporarily storing energy in which iron ore is reduced with hydrogen and the resulting intermediate product of reduced iron ore and possibly accompanying substances is subjected to further metallurgical processing; the hydrogen is produced through electrolysis of water; the electrical energy required for the electrolysis is regenerative energy from hydroelectric and/or wind and/or photovoltaic sources or other regenerative forms of energy and the hydrogen and/or the intermediate product is produced regardless of the current demand, whenever enough regeneratively produced electrical energy is available; and unneeded intermediate product is stored until there is demand or it is used so that the regenerative energy that is stored therein is also stored and a method for storing discontinuously produced energy in which the discontinuously produced energy, when it is present or after its production, is conveyed into a process in which a storable intermediate product is produced from a source material and the storable intermediate product is stored until it is required and retrieved for the production of an end product. | 11-19-2015 |
| 20160060726 | GREEN PROCESS FOR THE PREPARATION OF PURE IRON - The present invention relates to an eco-friendly and single step process for the preparation of high purity iron by using hydrogen plasma in a suitable smelting reactor furnace. Reduction of iron oxide in excess of 99% can be achieved by reducing the iron ore in hydrogen plasma smelting system. The product quality is greatly improved as there is no instance of coke inclusion which otherwise would have carried carbon, sulphur, phosphorous, silica, etc. with it. In addition, this greatly diminishes carbon dioxide emission thereby making the process highly eco-friendly in nature. Apart from these, the process produces water as the only by-product. The process takes care of the green house effect with the non-involvement of gases like carbon dioxide, carbon monoxide during the operation. Thus, the present process is developed to produce high pure iron in a hydrogen plasma reactor without using carbon as reductant which thereby reduces the carbon dioxide emission drastically. | 03-03-2016 |
| 075100440 | Carbon monoxide or Carbon dioxide | 1 |
| 20140260798 | Integration of Molten Carbonate Fuel Cells in Iron and Steel Processing - In various aspects, systems and methods are provided for operating molten carbonate fuel cells with processes for iron and/or steel production. The systems and methods can provide process improvements such as increased efficiency, reduction of carbon emissions per ton of product produced, or simplified capture of the carbon emissions as an integrated part of the system. The number of separate processes and the complexity of the overall production system can be reduced while providing flexibility in fuel feed stock and the various chemical, heat, and electrical outputs needed to power the processes. | 09-18-2014 |
| 075100450 | Noble gas, Nitrogen, or inert gas not otherwise identified | 1 |
| 20090126529 | Highly Pure Hafnium Material, Target and Thin Film Comprising the Same and Method for Producing Highly Pure Hafnium - A method of manufacturing high purity hafnium is provided and includes the steps of making aqueous solution of chloride of hafnium, thereafter removing zirconium therefrom via solvent extraction, performing neutralization treatment to obtain hafnium oxide, further performing chlorination to obtain hafnium chloride, obtaining hafnium sponge via reducing said hafnium chloride, and performing electron beam melting to the hafnium sponge in order to obtain a hafnium ingot, as well as a high purity hafnium material obtained thereby and a target and thin film formed from such material. The present invention relates to a high purity hafnium material with reduced zirconium content contained in the hafnium, a target and thin film formed from such material, and the manufacturing method thereof, and provides efficient and stable manufacturing technology, a high purity hafnium material obtained according to such manufacturing technology, and a target and high purity hafnium thin film formed from such material. | 05-21-2009 |
