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92.发明授权
公开(公告)号：US1366383A
公开(公告)日：1921-01-25
申请号：US15681817
申请日：1917-03-23
申请人： HILLHOUSE CHARLES B
发明人： HILLHOUSE CHARLES B
IPC分类号： C21B13/14
CPC分类号： C21B13/14 , Y02P10/136
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公开(公告)号：US1254363A
公开(公告)日：1918-01-22
申请号：US9566116
申请日：1916-05-05
申请人： SHAW WILLIAM M
发明人： SHAW WILLIAM M
CPC分类号： C21B13/006 , C21B13/14 , Y10S164/08
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公开(公告)号：US20230407423A1
公开(公告)日：2023-12-21
申请号：US18038139
申请日：2021-11-24
发明人： Michael Buckley
CPC分类号： C21B13/004 , C21B13/10 , C21B13/146 , C21B13/0046 , C21B13/12 , C21B13/008 , F27D17/004 , F27B9/12 , F27D11/12 , F27B9/3005 , C21B2100/60 , F27B2009/122 , F27D2099/0028
摘要： A method and an apparatus for “recycling” a significant amount of heat within a linear hearth furnace by means of an endless conveyor that transports briquettes through the furnace from an inlet (briquette feed) end to an outlet (DRI discharge) end and then returns to the inlet end and transfers a significant amount of heat from the outlet end to the inlet end of the furnace.
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公开(公告)号：US20230203606A1
公开(公告)日：2023-06-29
申请号：US17926819
申请日：2021-05-28
发明人： Rodney James Dry
CPC分类号： C21B13/0033 , C21B13/004 , C21B13/0066 , C21B13/143 , C21B13/12
摘要： A process for producing direct reduced iron (“DRI”) from iron ore and biomass in a single stage fluidised bed includes injecting (a) iron ore, (b) gaseous oxygen and (c) a solid reductant including biomass into a reaction zone of the fluidized bed operating in a temperature range of 750-850#C and reducing iron ore and forming DRI in the fluidized bed and discharging DRI having a metallisation of at least 70% from the fluidised bed.
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公开(公告)号：US20230032245A1
公开(公告)日：2023-02-02
申请号：US17791526
申请日：2021-01-13
摘要： A liquid feed for a basic oxygen furnace, a method to obtain the liquid feed and a steel plant producing such a liquid feed, wherein the liquid feed includes a first liquid iron stream of carburised molten scrap and a second liquid iron stream from an iron making process, thereby allowing a maximum use of scrap intake while preparing high quality steel products.
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98.发明授权公开(公告)号：US11421289B2
公开(公告)日：2022-08-23
申请号：US17214401
申请日：2021-03-26
申请人： TENOVA S.P.A.
IPC分类号： C21B13/14 , C22C33/08 , B22F9/08 , C21B13/12 , C21C1/08 , C21C5/52 , C21B13/00 , C22C37/00 , C21B11/10 , C22C33/02
摘要： A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide Fe3C; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting.
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99.发明授权公开(公告)号：US10337078B2
公开(公告)日：2019-07-02
申请号：US15586596
申请日：2017-05-04
IPC分类号： C21C7/00 , C22B1/16 , C22B1/24 , C22B1/244 , C21C5/56 , F27D3/00 , C21B13/00 , C21B13/14 , B22F3/02
摘要： Described are solid agglomerates of fine metal particles and methods for manufacturing same. A liquid oily lubricant is used in the manufacture of the solid agglomerates. The manufacturing comprises blending fine metal particles with the liquid oily lubricant and compacting the oily metallic mixture obtained to desired solid form. Advantageously, the solid agglomerates possess a desirable density, a suitable resistance to crumbling and dusting during handling, and they can resist to high temperature and to humidity. Solid agglomerated metal products, according to the invention, may be useful for different purposes such as quality charge material for steel plants, blast furnaces and foundries.
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公开(公告)号：US10233510B2
公开(公告)日：2019-03-19
申请号：US15109393
申请日：2014-12-30
申请人： INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCE , BEIJING ZHONGKAIHONGDE TECHNOLOGY CO., LTD.
发明人： Qingshan Zhu , Chuanlin Fan , Hongzhong Li , Zhaohui Xie , Wenheng Mu , Cunhu Wang , Xingang Jiao
摘要： A system for fluidized bed reduction of powdered iron ore. Use of high-gas-velocity processing accelerates iron ore reduction speed and greatly improves the gas-treatment capabilities of a unit-cross-sectional fluidized bed. Use of parallel connections involving reduced coal gas lessens the volume of gas passing through a single-stage fluidized bed. Use of serial/parallel-connection processing involving reduced coal gas increases the coal gas utilization rate. The invention achieves the highly-effective reduction of powdered iron ore in a fluidized bed under near-atmospheric pressure. A reduction method based on the present system is also disclosed.
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