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| Number | Title | Issue Date |
| 7780756 | Ore reduction process and titanium oxide and iron metallization product The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglome... | 08/24/2010 |
| 7247000 | Weld shielding device for automated welding of impellers and blisks The present invention provides an apparatus for use in automated welding repairs, particularly those repairs intended for impellers, blisks, and similar structures. There is provided a welding shield which is shaped to fit securely within valleys of an impeller. An ... | 07/24/2007 |
| 7175691 | Method of producing stainless steel by re-using waste material of stainless steel producing process A method of producing stainless steel includes the steps of melting a raw material in an electric furnace to form molten steel, and then refining the molten steel by a refining furnace to produce stainless steel in a stainless steel producing process. In the method,... | 02/13/2007 |
| 7135053 | Brittle formed product and iron-based power material and method for manufacturing these materials Cotton-like aggregates (B) including grinding chips from an iron-based metal and a grinding fluid containing oil and water are compression molded for forming a brittle compact (C) having the fibrous grinding chips roughly sheared and excessive water and oil removed ... | 11/14/2006 |
| 7081150 | Additive for inoculation of cast iron and method An additive for increasing the toughness of thin-wall iron castings is provided. The additive includes amounts of a non-ferrous metal oxide and a metal sulfide in which the non-ferrous metal has an affinity for oxygen less than that of iron, and the metal has an aff... | 07/25/2006 |
| 6977058 | Inoculant-strainer with improved filtration effectiveness and inoculant dissolution A strainer for molten metal. The strainer comprises a well and a multiplicity of passages. Each passage comprises a first cavity a second cavity with a smaller equivalent diameter than the first cavity. A neck is between the first cavity and second cavity. An inocul... | 12/20/2005 |
| 6866696 | Additive for production of irons and steels A technique for producing iron utilizes agglomerations, such as briquettes or tablets, or powders, that include a sulfur-containing material such as iron sulfide, and and oxygen containing material such as iron oxide. The agglomerations or powders are substantially ... | 03/15/2005 |
| 6793707 | Inoculation filter A method for inoculating molten iron. The method comprises passing the molten iron through a filter assembly at an approach velocity of about 1 to about 60 cm/sec. The filter assembly comprises a filter element and an inoculation pellet in contact with the filter el... | 09/21/2004 |
| 6743275 | Method of making and using ferrous metal particle briquettes Ferrous metal briquettes made from ferrous metal particles and an alkaline metal silicate, for adding to ferrous melts to recycle the particles. ... | 06/01/2004 |
| 6689189 | Metallurgical product The present invention relates to a method for the production of abulk of molten steel in an electric arc furnace, comprising the formation of a foaming top slag. During at least one phase of the production process, a doping agent is added to the top slag ... | 02/10/2004 |
| 6391085 | Metal feedstock from wasted metal products A metal feedstock from wasted metal products is disclosed. The feedstock is formed by crushing the metal products into pieces; magnetically separating sheet-shaped ferrous scraps and ferrous cast blocks from the crushed pieces; placing the cast blocks bet... | 05/21/2002 |
| 6383250 | Steel making revert and process for preparing Specific recycle materials are blended with hot slag and wet sludge to make a recyclable steelmaking revert. The specific recycle materials are kish, lime, glass, ferro-manganese and the like. The specific materials are blended with the slag and sludge in... | 05/07/2002 |
| 6372014 | Magnesium injection agent for ferrous metal A treatment agent and method to introduce magnesium into ferrous material. The treatment agent includes a mixture of high melting temperature particles and magnesium particles. The content of high melting temperature particles in the particle mixture is p... | 04/16/2002 |
| 6352570 | Magnesium desulfurization agent A method and composition for removing sulfur from molten ferrous material, particularly molten pig iron. The desulfurization agent includes a magnesium particle coated with a heat absorbing compound. The heat absorbing compound absorbs heat around the mag... | 03/05/2002 |
| 6302938 | Reduced pellets A carbonaceous material is controlled such that the amount of carbon is from 7 to 60 mass % based on the total amount of iron and Zn in a starting mixture comprising one or more of ducts containing iron oxide and Zn oxide and a binder in an amount to bond... | 10/16/2001 |
| 6280497 | Cored wire for treating molten metal and method of manufacture A cored wire continuously formed by continuously inserting an extruded core inside a continuously roll formed sheath, the peripheral edges of the roll formed sheath joined by a continuous lock seam. Inspection of the partially formed lock seam at a design... | 08/28/2001 |
| 6235078 | Iron additive for alloying non-ferrous alloys The present invention concerns additives for non-ferrous, liquid metals. The additives consist of compacted bodies of essentially pure iron particles.... | 05/22/2001 |
| 6149710 | Additive for adding one or more metals into aluminium alloys Briquettes or tablets to be added to an aluminium melt, are made up by the combination of an agglutinated powder which include, at least, an aluminium powder, a powder of one or more metals or alloys including those to be added, and a wax-type organic com... | 11/21/2000 |
| 6126713 | Additive for use in producing spheroidal graphite cast iron An additive for use in producing spheroidal graphite cast iron of the present invention contains a fine particle of magnesium oxide having a purity of 90 weight % or more and at least one selected from the group consisting of a graphite-spheroidizing mate... | 10/03/2000 |
| 6126714 | Revert manufactured from iron-bearing waste material The invention is directed to a process for dehydrating and recycling back into a BOF converter wet BOF scrubber sludge to produce a steelmaking revert having an improved flow rate when handled in a recycle stream. Wet sludge is combined with hot BOF slag ... | 10/03/2000 |
| 6096112 | High carbon content briquettes A process for preparing high carbon content briquettes includes providing a particulate material which includes iron particles including iron oxide in an amount of at least about 4% based on weight of the material, and carbon particles in an amount greate... | 08/01/2000 |
| 6036744 | Method and apparatus for making metallic iron A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby maki... | 03/14/2000 |
| 6030434 | Method for hot agglomeration of solid metallized iron particles to produce alloyed briquettes A method for making iron-alloy briquettes, includes the steps of: providing hot metallized iron particles having a temperature of at least about 650° C. and an initial degree of metallization of at least about 90% (wt.); providing an additive selected fr... | 02/29/2000 |
| 6024777 | Compacted steel powder alloying additive for aluminum melts, method of making and method of using A compacted steel powder in particulate form is used as an alloying additive for aluminum melts. The additive is in the form of a wafer which is smooth on one side and corrugated on the other side such that its thickness is 1 mm at the trough and 2-3 mm a... | 02/15/2000 |
| 5817164 | Method and apparatus for making feedstock for steel making Improvements in metallurgical conversion in accordance with the present intion consist in the preparation of a semifinished item (a charge stock) in the form of a pig by forming thereof in a molding box of a casting machine from a solid filler, for the m... | 10/06/1998 |
| 5738704 | Charging stock for steel production An improved charging stock for steel production which facilitates earlier and more uniform carbon oxidation, and increases the rate of oxygen transport in the melt, comprises and iron-carbon alloy having silicon therein and an oxide-containing material. T... | 04/14/1998 |
| 5725631 | Composite charge for metallurgical processing A composite charge for metallurgical processing which reduces the content of non-metallic inclusions in the end product(s) comprises 40-83 wt. % of a metallic agent, 17-50 wt. % of an oxide agent and 0.1-10.0 wt. % of a carbonaceous agent. The carbonaceou... | 03/10/1998 |
| 5681367 | Method of producing hot metal A method for preparing iron bearing green pellets that can be processed in a rotary hearth furnace without degradation and become self-fluxing sponge iron pellets when charged to a submerged arc furnace operating at a lower temperature than the rotary hea... | 10/28/1997 |
| 5520719 | Process for producing sintered iron ore product The present invention relates to a method for sintering an iron scrap in a process for producing a sintered ore which is used as a raw material in ironmaking in a blast furnace. Zn contained in the iron scrap is removed in the step of sintering to enable ... | 05/28/1996 |
| 5376161 | Steel making process including transporting spong iron briquettes Sponge iron particles obtained in a reduction unit are, subsequently, subjected to a hot-briquetting process and supplied to the refining vessel in a condition in which they are still hot from the hot-briquetting process. By means of this measure, the amo... | 12/27/1994 |
| 4708739 | Grain refining metals The invention provides a grain refinement method for copper-based metals, which method can be applied to a range of different types of such metals. In accordance with the method, one arranges that a melt of the metal to be grain refined contains each of t... | 11/24/1987 |
| 4472196 | Exothermic alloy for addition of alloying ingredients to steel An addition agent and method are provided for adding alloying ingredients to a molten steel bath comprising a P/M compact formed of a compacted mixture of a particulate primary addition alloy and at least one secondary particulate metal. The primary parti... | 09/18/1984 |
| 4395285 | Low density compacts of prepared mix for use in the production of silicon and ferrosilicon A low density, porous compact of prepared mix containing silica fume, finely-divided carbonaceous reducing agent such as petroleum coke or coal, optionally iron and a binder.... | 07/26/1983 |
| 4369062 | Method of making briquettes and product The method of making briquettes having approximately 50% metallic fines, 41% mill scale, 2% bentonite, 3% pitch residue, 2% burnt lime fines, and 2% molasses; and briquettes having that composition.... | 01/18/1983 |
| 4338129 | Production of vermicular graphite cast iron A treatment agent for use in the production of vermicular graphite cast iron is formed by compacting a mixture comprising particulate iron, magnesium, titanium and rare earth.... | 07/06/1982 |
| 4313758 | Method for adding unalloyed magnesium metal to molten cast iron Finely sized unalloyed magnesium metal is blended with finely sized ferrosilicon alloy. The blended mixture is placed in metal containers and plunged into molten cast iron.... | 02/02/1982 |
| 4311523 | Titanium-boron additive alloys A new high concentration titanium-boron additive alloy for addition to molten metals is provided comprising about 65% to 90% titanium, about 1.3% to 4.5% boron and the balance iron with residual impurities in ordinary amounts. Aluminum, zirconium, silicon... | 01/19/1982 |
| 4292075 | Slow fade inocculant and a process for the inocculation of melted cast iron A slow fade cast iron inocculant is made up of (a) a silicon-containing matrix of iron silicon alloys and having a crystal structure, (b) compounds, present in the matrix crystal structure, of high-melting point calcium aluminum silicates, generally in the for... | 09/29/1981 |
| 4224070 | Chloride salt-silicon containing slag compositions for cast iron melts A slag composite formed of chloride salts and silicon or a silicon alloy applied to the surface of magnesium-inoculated cast iron melts retards magnesium fade from the melt.... | 09/23/1980 |
| 4199351 | Treatment agents for molten metals The invention provides a body for introducing a treatment agent into a metal melt e.g. a ferrous metal melt, the body comprising a volatile treatment agent e.g. magnesium dispersed in a matrix comprising refractory, heat-insulating material, a particulate... | 04/22/1980 |
