| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | RECARBURISATION METHOD | US13057955 | 2009-08-07 | US20110197713A1 | 2011-08-18 | Veena Sahajwalla; Paul O'kane |
| A method for recarburising a molten ferro-alloy in a ladle or ladle furnace comprises the step of adding a carbon-containing polymer to the ladle or furnace. The polymer is adapted to function as a recarburiser of the ferro-alloy. In this regard, the polymer can have a format which, when it contacts the molten ferro-alloy, promotes dissolution of carbon from the polymer into the molten ferro-alloy. | ||||||
| 62 | Method for manufacturing molten iron | US12678533 | 2008-09-18 | US07993428B2 | 2011-08-09 | Hideaki Fujimoto; Tsuyoshi Mimura; Itsuo Miyahara; Takao Harada; Masataka Tateishi; Hiroshi Sugitatsu |
| A method for manufacturing molten iron comprises 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 from a bottom blowing tuyere on a bottom of the melting furnace, wherein: a carbonaceous material suspending slag layer is formed in an upper portion of a slag layer formed on the molten iron layer when the solid reduced iron is melted into the molten iron; a carbonaceous material coating layer having the carbonaceous material is 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. | ||||||
| 63 | PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS | US13061001 | 2009-10-30 | US20110155821A1 | 2011-06-30 | Masaharu Ueda; Kazunori Seki; Takuya Satou; Takeshi Yamamoto |
| This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P≦0.0150%; S≦0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 μm are present at an amount per unit area in a range of 10 to 200/mm2 in a cross-section taken along a lengthwise direction in the pearlite structure. | ||||||
| 64 | METHOD FOR MANUFACTURING MOLTEN IRON | US12678533 | 2008-09-18 | US20100180723A1 | 2010-07-22 | Hideaki Fujimoto; Tsuyoshi Mimura; Itsuo Miyahara; Takao Harada; Masataka Tateishi; Hiroshi Sugitatsu |
| 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. | ||||||
| 65 | Lime-based additive for steel smelting and the preparation method thereof | US11966561 | 2007-12-28 | US07658782B2 | 2010-02-09 | Jizong Li; Jaemu Kim; Hao Du |
| This invention belongs to ferrous metallurgy field, and in particular relates to a lime-based additive for steel smelting which is used in the electric furnace refining and steel casting process for carbureting and deoxidation and the preparation method thereof. The lime-based additive for steel smelting comprises lime-based material and carbonaceous material, wherein the content of the lime-based material is 40-80 wt % relative to the total amount of the additive, and the remaining is the carbonaceous material; the lime-based material is a passivated CaO powder with a low flowability, or the mixture of the passivated CaO powder and CaCO3 powder, and the carbonaceous material is at least one of the coke, graphite, semi-coke powder and coal with carbon content not less than 85 wt %. When the additive has a shape of pellet, and it further comprises 1-5 wt % of agglomerant which has a microstructure of strip, streak or dendritic, and is at least one of MgO, Al2O3, and CaCO3. | ||||||
| 66 | Composition of matter tailoring: system I | US10659090 | 2003-09-10 | US07238297B2 | 2007-07-03 | Christopher J. Nagel |
| 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. | ||||||
| 67 | Composite briquettes for electric furnace charge, and in their method of use | US11220917 | 2005-09-08 | US20070051200A1 | 2007-03-08 | Pierre Vayda |
| For use with an electric steelmaking furnace, a briquette is provided which incorporates a suitable binder, a first quantity of carbon fines, and a second quantity of a material in powdered form, the latter material being selected from the group consisiting of lime, dolime, limestone, dolomite, magnesia, magnesium carbonate, other suitable carbonates, and mixtures thereof. The second quantity being large enough to suppress the slippery nature of the carbon fines, and to density the briquette to the extent necessary to cause it to sink into the furnace melt. | ||||||
| 68 | Composition of matter tailoring: system I | US10690050 | 2003-10-21 | US20040113130A1 | 2004-06-17 | Christopher J. Nagel |
| 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. | ||||||
| 69 | Smelting reduction method | US09974511 | 2001-10-10 | US20020112567A1 | 2002-08-22 | Masahiro Kawakami; Terutoshi Sawada; Takeshi Sekiguchi; Masayuki Watanabe; Katsuhiro Iwasaki; Shinichi Isozaki; Junichi Fukumi |
| The refining method of low carbon molten iron comprises the steps of supplying the de-sulfurizing agent into the molten iron and agitating it so as to carry out the de-sulfurization, heating or carburizing the molten iron before or after the de-sulfurizing step, and de-carburizing the de-sulfurized metal in the decarburization treating furnace. The molten iron is produced by charging ores reduced until being metallized in the smelting reduction furnace. As the carbonaceous materials, powder coke, oil coke or waste plastic are used. As the iron source, the sintered ores of small grain size are used. | ||||||
| 70 | Method and apparatus for the acceleration of solid particles entrained in a carrier gas | US730383 | 1985-05-03 | US4655647A | 1987-04-07 | Andre Bock |
| An acceleration nozzle for particles entrained in a carrier gas comprises a first central nozzle having a first diverging cross-section, and an extension nozzle section extending from the first nozzle. The extension nozzle section has a flare or diverging angle which is greater than that of the first acceleration nozzle. The nozzle extension is surrounded about its mouth or opening by a second nozzle forming a casing or housing therearound; the second nozzle being connected to a source of gas. In a preferred embodiment, instead of utilizing two distinct gas sources to supply the first acceleration nozzle and the second "housing" nozzle, a portion of the gas passing through the acceleration nozzle may be diverted by means of slits built into the latter. The slits act as a separator of the gaseous phases and solid particles, and prevent the solid particles from penetrating the second nozzle. Acceleration nozzles of the present invention are typically used for delivering carboniferous powdered materials into a steel bath. | ||||||
| 71 | Method and apparatus for the acceleration of solid particles entrained in a carrier gas | US587540 | 1984-03-08 | US4603810A | 1986-08-05 | Francois Schleimer; Clement Burton; Andre Bock; Jean Peckels |
| A method and apparatus for accelerating solid particles entrained in a carrier gas so as to maximize the velocity of the particles at the output end of a duct is presented. This maximized or optimal acceleration is achieved by varying the cross section of the duct over at least the last 5 meters upstream from the opening thereof. Preferrably, the cross section of the duct should continuously increase i.e. diverge, towards the opening. This diverging cross section is preferrably in accordance with a nonlinear function of the length. | ||||||
| 72 | Process for producing steel in a converter from pig iron and ferrous scrap | US475973 | 1983-03-16 | US4443252A | 1984-04-17 | Pieter J. Kreijger; Gerardus P. Buhrmann |
| A process of producing steel in a converter, wherein the starting materials comprise pig iron and ferrous scrap, involves blowing of oxygen into the molten metal bath in the converter. Advantageous results, in particular savings of Fe and Mn and in the amount of liquid metal used, are obtained by the combination of the following process steps:(a) during at least part of the time of blowing oxygen into the bath, inert gas is passed through the bottom of converter into the bath,(b) during at least part of the time of blowing oxygen into the bath, secondary oxygen is blown into the atmosphere above the bath,(c) at least once during the time of blowing oxygen into the bath, carbon is added to the reaction from above. | ||||||
| 73 | Process for the production of carburizing agents and products | US333589 | 1981-12-23 | US4402895A | 1983-09-06 | Peter Courvoisier; Dieter Stadie |
| The described process relates to the production of carburizing agents by compacting carbon dusts with a binder, such as hydroxyethyl cellulose, with addition of water and an auxiliary gelling agent. The auxiliary gelling agents used is glyoxal and/or bases of an alkali metal or alkaline earth metal or ammoniacal water. At from 0.5 to 2% by weight the requirement of binder is so small that no noticeable changes in the analytical values for the carbon dust used appear. The molded bodies produced from the compositions are dried at from 20.degree. to 180.degree. C. Calcination is not required. | ||||||
| 74 | Pellets of graphite and carbon black and method of producing | US52659 | 1979-06-27 | US4308073A | 1981-12-29 | King L. Mills |
| Pellets comprising graphite and carbon black are made by mixing at least two weight percent carbon black with graphite, subsequently adding liquid pelleting medium, and pelletizing using available pelletizing methodology. | ||||||
| 75 | Process for producing graphite agglomerates, and products obtained by it | US884218 | 1978-03-07 | US4194901A | 1980-03-25 | Mario Gambacorta |
| A process for producing graphitic agglomerates, comprising the steps of: ing together in a suitable mixer a very fine graphitic powder, a coal such as anthracite, pitcoal, coke etc., and a binder such as coal tar pitch, starch, lignan and its derivatives such as lignin-sulphonates etc., thermoplastic and thermosetting resins; heating this mixture to about the melting temperature of the binder; and feeding the amalgamated mixture into a moulding press in which it is solidified into ovoid shapes, briquets and the like, or feeding it into a pelletizing plant. | ||||||
| 76 | Carburizing molten ferrous metal | US41383354 | 1954-03-03 | US2762701A | 1956-09-11 | CREGO FRANCIS T; HULME PHILIP M |
| 77 | Process of improving the quality of malleable iron and steel. | US1910598625 | 1910-12-21 | US1053454A | 1913-02-18 | THALLNER OTTO |
| 78 | Manufacture of steel. | US1905244659 | 1905-02-07 | US842802A | 1907-01-29 | MOYA JOSE DE |
| 79 | Casting metal | US229308D | US229308A | 1880-06-29 | ||
| 80 | Improvement in processes of purifying iron and copper | US128088D | US128088A | 1872-06-18 | ||
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