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1. 发明授权

US09464338B2 Reclaiming and inhibiting activation of DRI dust and fines 有权
标题翻译：回收和抑制DRI粉尘和细粉的活化
公开(公告)号：US09464338B2
公开(公告)日：2016-10-11
申请号：US14202412
申请日：2014-03-10
申请人： NU-IRON TECHNOLOGY, LLC
发明人： David Hendrickson , John Brandon , Les Hart , John Anderson
IPC分类号： C22B1/16 , C21B13/00 , C22B1/244 , B05D1/40 , B05D7/14 , C23F15/00
CPC分类号： C22B1/16 , B05D1/40 , B05D7/14 , C21B13/0093 , C22B1/244 , C23F15/00 , Y02P10/136
摘要： Method of reclaiming and inhibiting activation of DRI fines is disclosed comprising the steps of forming a moving stream or pile containing DRI pellets and DRI fines, coating the moving stream or the pile of DRI pellets and DRI fines with a coating material comprising an alkane mixture in the C15 to C40 range to form a coating on the DRI pellets and DRI fines and cause DRI fines to adhere together and to the DRI pellets to form a plurality of agglomerates, and moving the agglomerates of coated DRI pellets and coated DRI fines to a facility for use in making steel. The coating material may be applied to coat the DRI pellets and DRI fines at a rate between 0.2 and 2.0 gallons per ton of DRI processed. The coating material may be mineral oil.
摘要翻译：公开了回收和抑制DRI细粒活化的方法，其包括以下步骤：形成包含DRI颗粒和DRI细粒的移动流或桩，用包含烷烃混合物的涂料涂覆移动流或者一堆DRI颗粒和DRI细粉 C15至C40的范围在DRI颗粒和DRI细粉上形成涂层，并使DRI细粉粘附在一起，并将DRI颗粒与DRI颗粒形成多个附聚物，并将涂覆的DRI颗粒和涂覆的DRI细粒的附聚物移至设施用于制造钢铁。可以涂覆涂料以每吨处理的DRI以0.2至2.0加仑的速率涂覆DRI颗粒和DRI细粉。涂料可以是矿物油。

2. 发明授权

US09045809B2 Reclaiming and inhibiting activation of DRI fines 有权
标题翻译：回收和抑制DRI细粉的活化
公开(公告)号：US09045809B2
公开(公告)日：2015-06-02
申请号：US13889684
申请日：2013-05-08
申请人： NU-IRON TECHNOLOGY, LLC
发明人： David Hendrickson , John Brandon , Les Hart , John Anderson
IPC分类号： C22B1/16 , C23F11/00 , C23F14/00 , C23F15/00 , C22B1/216 , C22B1/24 , C22B1/244 , C21B13/00
CPC分类号： C22B1/16 , C21B13/0093 , C22B1/216 , C22B1/2406 , C22B1/244 , C23F11/00 , C23F14/00 , C23F15/00 , Y02P10/136
摘要： A method of reclaiming and inhibiting activation of DRI including forming a moving stream or pile containing DRI pellets and DRI fines and applying to said DRI material a coating material optionally having a melting point between 70 and 200° F. and comprising at least one antioxidant and at least one a carboxylic material with at least one selected from the group consisting of coatable fatty acid and an esterified derivative thereof, forming a coating on the DRI pellets and DRI fines to cause the fines to adhere together and to the pellets to form a plurality of DRI agglomerates. The coating material may be selected from the group consisting of palm oil, coconut oil, combinations thereof, and ester derivatives thereof. The antioxidant in the coating material is selected from the group consisting of at least one of butylated hydroxytoluene, carotenoid, phytosterol, squalene, vitamin E, tocopherols, tocotrienols, and mixtures thereof.
摘要翻译：一种回收和抑制DRI活化的方法，包括形成含有DRI颗粒和DRI细粉的移动流或绒毛，并向所述DRI材料施用任选具有70至200°F熔点的涂料，并且包含至少一种抗氧化剂和至少一种具有选自可涂覆脂肪酸和其酯化衍生物中的至少一种的羧酸物质，在DRI颗粒和DRI细粉上形成涂层以使细粒粘附在一起并形成多个颗粒的DRI团块。涂料可以选自棕榈油，椰子油，它们的组合，以及它们的酯衍生物。涂料中的抗氧化剂选自丁基化羟基甲苯，类胡萝卜素，植物甾醇，角鲨烯，维生素E，生育酚，生育三烯酚及其混合物中的至少一种。

3. 发明授权

US08858678B2 System and method for making metallic iron with reduced CO2 emissions 有权
标题翻译：制造减少二氧化碳排放的金属铁的方法
公开(公告)号：US08858678B2
公开(公告)日：2014-10-14
申请号：US13499021
申请日：2010-09-28
申请人： Richard F. Kiesel , David J. Englund , Mark Schlichting , John Meehan , Jeremiah Crouch , Logan Wilson
发明人： Richard F. Kiesel , David J. Englund , Mark Schlichting , John Meehan , Jeremiah Crouch , Logan Wilson
IPC分类号： C22B5/00 , F27D99/00 , C21B13/10 , F27D17/00 , F27B9/02 , F27B9/30 , C21B13/00
CPC分类号： C21B13/10 , C21B13/0046 , C21B2100/02 , C21B2100/04 , F27B9/021 , F27B9/3005 , F27D17/004 , F27D17/008 , Y02P10/132 , Y02P10/136 , Y02P10/216
摘要： A method and system for making metallic iron nodules with reduced CO2 emissions is disclosed. The method includes: assembling a linear hearth furnace having entry and exit portions, at least a conversion zone and a fusion zone, and a moving hearth adapted to move reducible iron bearing material through the furnace on contiguous hearth sections; assembling a shrouded return substantially free of air ingress extending adjacent at least the conversion and fusion zones of the furnace through which hearth sections can move from adjacent the exit portion to adjacent the entry portion of the furnace; transferring the hearth sections from the furnace to the shrouded return adjacent the exit portion; reducing reducible material in the linear hearth furnace to metallic iron nodules; and transporting gases from at least the fusion zone to the shrouded return to heat the hearth sections while in the shrouded return.
摘要翻译：公开了一种用于制造具有减少的CO 2排放的金属铁结核的方法和系统。该方法包括：组装具有入口和出口部分的至少一个转化区和熔融区的线性炉床，以及适于将可还原的铁轴承材料通过连续炉床部分的炉移动的移动炉床; 组装基本上不含空气入口的被覆盖的回流件，其至少延伸至炉的转化和熔融区域，炉床部分可通过该转化和熔融区域从邻近出口部分移动到邻近炉的进入部分; 将炉床部分从炉子传送到邻近出口部分的带盖的回流; 将线性炉底炉中的可还原材料还原成金属铁结核; 以及将至少熔融区域的气体输送到被覆盖的回流口，以在罩壳返回中加热炉床部分。

4. 发明申请

US20130291682A1 RECLAIMING AND INHIBITING ACTIVATION OF DRI FINES 有权
标题翻译：恢复和抑制DRI FINES的激活
公开(公告)号：US20130291682A1
公开(公告)日：2013-11-07
申请号：US13889684
申请日：2013-05-08
申请人： David HENDRICKSON , John BRANDON , Les HART , John ANDERSON
发明人： David HENDRICKSON , John BRANDON , Les HART , John ANDERSON
IPC分类号： C22B1/16
CPC分类号： C22B1/16 , C21B13/0093 , C22B1/216 , C22B1/2406 , C22B1/244 , C23F11/00 , C23F14/00 , C23F15/00 , Y02P10/136
摘要： A method of reclaiming and inhibiting activation of DRI including forming a moving stream or pile containing DRI pellets and DRI fines and applying to said DRI material a coating material optionally having a melting point between 70 and 200° F. and comprising at least one antioxidant and at least one a carboxylic material with at least one selected from the group consisting of coatable fatty acid and an esterified derivative thereof, forming a coating on the DRI pellets and DRI fines to cause the fines to adhere together and to the pellets to form a plurality of DRI agglomerates. The coating material may be selected from the group consisting of palm oil, coconut oil, combinations thereof, and ester derivatives thereof. The antioxidant in the coating material is selected from the group consisting of at least one of butylated hydroxytoluene, carotenoid, phytosterol, squalene, vitamin E, tocopherols, tocotrienols, and mixtures thereof.
摘要翻译：一种回收和抑制DRI活化的方法，包括形成含有DRI颗粒和DRI细粉的移动流或绒毛，并向所述DRI材料施用任选具有70至200°F熔点的涂料，并且包含至少一种抗氧化剂和至少一种具有选自可涂覆脂肪酸和其酯化衍生物中的至少一种的羧酸物质，在DRI颗粒和DRI细粉上形成涂层以使细粒粘附在一起并形成多个颗粒的DRI团块。涂料可以选自棕榈油，椰子油，它们的组合，以及它们的酯衍生物。涂料中的抗氧化剂选自丁基化羟基甲苯，类胡萝卜素，植物甾醇，角鲨烯，维生素E，生育酚，生育三烯酚及其混合物中的至少一种。

5. 发明申请

US20120285295A1 METHOD FOR PRODUCING METALLIC IRON NUGGETS 审中-公开
标题翻译：生产金属铁素体的方法
公开(公告)号：US20120285295A1
公开(公告)日：2012-11-15
申请号：US13449267
申请日：2012-04-17
申请人： Iwao Iwasaki
发明人： Iwao Iwasaki
IPC分类号： C21B15/00
CPC分类号： F27B9/028 , C21B13/0046 , C21B13/006 , C21B13/008 , C21B13/105 , C22B1/245 , F27B9/045 , F27B9/12 , F27B9/20 , F27B9/40
摘要： A method of producing metallic iron nuggets includes providing a hearth with refractory material, and providing a reducible mixture above at least a portion of the hearth, where the reducible mixture includes reducible iron bearing material, reducing material such that the reducible mixture has a quantity of reducible iron bearing material and between about 65% and about 90% of a stoichiometric amount of reducing material necessary for complete iron reduction of the reducible iron material, between about 1% and 4% by weight manganese oxide, between about 1% and 3% by weight fluorspar, and additives providing a slag basicity ratio of CaO/SiO2 between 1.2 and 1.7. Then the method includes thermally treating the reducible mixture in the presence of other carbonaceous material separate from the reducible mixture forming one or more metallic iron nuggets by melting.
摘要翻译：一种生产金属铁块的方法包括提供具有耐火材料的炉床，并且在炉床的至少一部分上方提供可还原的混合物，其中可还原的混合物包括可还原的含铁材料，还原材料，使得可还原的混合物具有在约1％至4％重量的氧化锰之间，约1％至3％之间的可还原铁材料完全还原所需的还原材料的化学计量量的约65％至约90％重量的氟石和提供CaO / SiO2的渣碱度比为1.2和1.7的添加剂。然后，该方法包括在与通过熔化形成一种或多种金属铁块的可还原混合物分开的其它碳质材料的存在下热处理可还原的混合物。

6. 发明申请

US20120279353A1 SYSTEM AND METHOD FOR PRODUCING METALLIC IRON 审中-公开
标题翻译：用于生产金属铁的系统和方法
公开(公告)号：US20120279353A1
公开(公告)日：2012-11-08
申请号：US13498806
申请日：2010-09-29
申请人： David J. Englund , Mark Schlichting , John Meehan , Jeremiah Crouch , Logan Wilson
发明人： David J. Englund , Mark Schlichting , John Meehan , Jeremiah Crouch , Logan Wilson
IPC分类号： C21B11/08 , F27B3/28 , F27B3/22 , F27B3/00 , F27B3/26
CPC分类号： C21B13/105 , C21B13/10 , F27B9/26 , F27B9/3005 , F27D17/004 , F27D17/008 , Y02P10/132 , Y02P10/136
摘要： A method for producing metallic iron including providing a hearth furnace having an entry end and a discharge end, a moveable hearth, and an exhaust stack positioned toward the entry end of the furnace, providing a carbonaceous hearth layer above the hearth, providing a layer of reducible material comprising reducing material and iron bearing material, delivering a flow of gases into the hearth furnace through burners, gas injection ports, or a combination thereof directing a flow of gases toward the entry end selected from combustible fuel, oxygen and carbon dioxide, oxygen and flue gas, oxygen and air, or a combination thereof to heat the furnace to a temperature sufficient to at least partially reduce the reducible material, increasing the velocity of the flow of gas to greater than 4 feet per second along the furnace, and heating the layer of reducible material to at least partially reduce the reducible material.
摘要翻译：一种金属制铁的制造方法，其特征在于，具备提供具有入口端和排出端的炉底炉，可移动的炉床和朝向所述炉的入口端设置的排气叠层，在所述炉膛上方设置碳质炉底层，可还原材料，包括还原材料和铁轴承材料，通过燃烧器，气体注入口或其组合将气流输送到炉床炉中，将气流引导到从可燃燃料，氧气和二氧化碳，氧气，和烟气，氧气和空气或其组合以将炉子加热到足以至少部分地减少可还原材料的温度，从而将气体流的速度沿着炉子增加到大于4英尺/秒，并且加热可还原材料层至少部分地减少可还原材料。

7. 发明申请

US20120119424A1 SYSTEM AND METHOD FOR PRODUCING METALLIC IRON 有权
标题翻译：用于生产金属铁的系统和方法
公开(公告)号：US20120119424A1
公开(公告)日：2012-05-17
申请号：US13351742
申请日：2012-01-17
申请人： Rodney L. Bleifuss , David J. Englund , Iwao Iwasaki , Donald R. Fosnacht , Mark M. Brandon , Bradford G. True
发明人： Rodney L. Bleifuss , David J. Englund , Iwao Iwasaki , Donald R. Fosnacht , Mark M. Brandon , Bradford G. True
IPC分类号： F27B3/22 , F27B3/26 , F27B3/06
CPC分类号： C21B13/0073 , C21B13/10 , C21C5/567 , C21C2100/02 , C22B1/212 , C22B1/245 , C22B5/10 , F27B9/045 , F27B9/26 , F27B9/3005 , F27B9/36 , Y02P10/136
摘要： A hearth furnace for producing metallic iron material has a furnace housing having a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zone is between the drying/preheat zone and the fusion zone. A moving hearth is positioned within the furnace housing. A hood or separation barrier within at least a portion of the conversion zone, fusion zone or both separates the fusion zone into an upper region and a lower region with the lower region adjacent the hearth and the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.
摘要翻译：用于生产金属铁材料的炉底炉具有炉壳，其具有干燥/预热区，转化区，熔融区和任选的冷却区，转化区位于干燥/预热区和熔融区之间。移动的炉床位于炉壳内。在转化区域，熔融区域或两者的至少一部分内的罩或分离屏障将熔融区域分离成上部区域和下部区域，其中下部区域邻近炉床，并且上部区域与下部区域相邻并与炉。喷射器将气态还原剂引入靠近炉膛的下部区域。燃烧区域可以形成在罩或隔离屏障之上。

8. 发明授权

US08177880B2 System and method of producing metallic iron 有权
标题翻译：金属铁生产系统及方法
公开(公告)号：US08177880B2
公开(公告)日：2012-05-15
申请号：US12444505
申请日：2007-10-04
申请人： David Englund , Rodney Bleifuss , Iwao Iwasaki , Donald Fosnacht , Mark Brandon , Bradford True
发明人： David Englund , Rodney Bleifuss , Iwao Iwasaki , Donald Fosnacht , Mark Brandon , Bradford True
IPC分类号： C21B11/08
CPC分类号： F27B9/028 , C21B13/0073 , C21B13/10 , C21B13/105 , C21B2100/66 , F27B9/16 , F27B9/2407 , F27B9/30 , F27B9/40 , F27D17/00 , Y02P10/136 , Y02P10/283
摘要： A hearth furnace 10 for producing metallic iron material has a furnace housing 11 with a drying/preheat zone 12 capable of providing a drying/preheat atmosphere for reducible material, a conversion zone 13 capable of providing a reducing atmosphere for reducible material, a fusion zone 14 capable of providing an atmosphere to at least partially reduced metallic iron material, and optionally a cooling zone 15 capable of providing a cooling atmosphere for reduced material containing metallic iron material. A hearth 20 is movable within the furnace housing 11 in a direction through the drying/preheat zone 12, then the conversion zone 13, then the fusion zone 14, and then the cooling zone 15. A separation barrier 30 is positioned within at least a portion of the conversion zone 13, the separation barrier 30 separating the conversion zone 13 into a combustion region 32 and a reducing region 31 with the reducing region 31 adjacent the hearth 20 and the combustion region 32 adjacent the reducing region 31 and spaced from the hearth 20.
摘要翻译：用于生产金属铁材料的炉底炉10具有炉壳11，炉壳11具有能够为可还原材料提供干燥/预热气氛的干燥/预热区12，能够为可还原材料提供还原气氛的转化区13，熔融区 14能够提供至少部分还原的金属铁材料的气氛，以及任选地能够为含有金属铁材料的还原材料提供冷却气氛的冷却区15。炉膛20可以在炉壳体11内沿着穿过干燥/预热区域12，然后是转化区域13，然后是熔融区域14，然后是冷却区域15的方向移动。分隔壁30位于至少一个转换区13的部分，分离屏障30将转化区13分解成燃烧区32和还原区31，还原区31与邻近炉底20的还原区31和与还原区31相邻的燃烧区32与炉床间隔开 20。

9. 发明授权

US08158054B2 Method and system for producing metallic iron nuggets 有权
标题翻译：生产金属铁块的方法和系统
公开(公告)号：US08158054B2
公开(公告)日：2012-04-17
申请号：US12639584
申请日：2009-12-16
申请人： Iwao Iwasaki , Michael J. Lalich , Robert C. Beaudin , Richard F. Kiesel , Andrew J. Lindgren , Rodney L. Bleifuss
发明人： Iwao Iwasaki , Michael J. Lalich , Robert C. Beaudin , Richard F. Kiesel , Andrew J. Lindgren , Rodney L. Bleifuss
IPC分类号： C21C7/00 , F27B3/00
CPC分类号： F27B9/028 , C21B13/0046 , C21B13/006 , C21B13/008 , C21B13/10 , C21B13/105 , C22B1/245 , C22B5/10 , F27B9/045 , F27B9/12 , F27B9/20 , F27B9/40
摘要： Method and system for producing metallic nuggets includes providing reducible mixture (e.g., reducible micro-agglomerates; reducing material and reducible iron bearing material; reducible mixture including additives such as a fluxing agent; compacts, etc.) on at least a portion of a hearth material layer. In one embodiment, a plurality of channel openings extend at least partially through a layer of the reducible mixture to define a plurality of nugget forming reducible material regions. Such channel openings may be at least partially filled with nugget separation fill material (e.g., carbonaceous material). Thermally treating the layer of reducible mixture results in formation of one or more metallic iron nuggets. In other embodiments, various compositions of the reducible mixture and the formation of the reducible mixture provide one or more beneficial characteristics.
摘要翻译：用于生产金属块的方法和系统包括在炉床的至少一部分上提供可还原的混合物（例如，可还原的微团聚体;还原材料和可还原的铁轴承材料;可还原的混合物，包括助熔剂等的添加剂;压实体等）材料层。在一个实施例中，多个通道开口至少部分地延伸穿过可还原混合物的层，以限定多个熔核形成可还原材料区域。这种通道开口可以至少部分地填充有熔核分离填充材料（例如含碳材料）。热处理可还原的混合物层导致形成一个或多个金属铁块。在其它实施方案中，可还原混合物的各种组合物和可还原混合物的形成提供一个或多个有利特征。

10. 发明授权

US08133299B2 Multiple hearth furnace for reducing iron oxide 有权
标题翻译：用于还原氧化铁的多炉底炉
公开(公告)号：US08133299B2
公开(公告)日：2012-03-13
申请号：US12513872
申请日：2007-11-08
申请人： Mark M. Brandon , Bradford G. True
发明人： Mark M. Brandon , Bradford G. True
IPC分类号： C21B13/10
CPC分类号： F27D5/00 , C21B13/0073 , C21B13/10
摘要： A multiple moving hearth furnace (10) having a furnace housing (11) with at least two moving hearths (20) positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth (20) capable of being charged with at least one layer of iron oxide and carbon bearing material at one end, and being capable of discharging reduced material at the other end. A heat insulating partition (92) is positioned between adjacent moving hearths of at least portions of the conversion zones (13), and is capable of communicating gases between the atmospheres of the conversion zones of adjacent moving hearths. A drying/preheat zone (12), a conversion zone (13), and optionally a cooling zone (15) are sequentially positioned along each moving hearth (30) in the furnace housing (11).
摘要翻译：一种具有炉壳（11）的多台式炉床（10），其具有至少两个位于所述炉壳体内的移动炉床（20），所述炉床沿相反方向移动，所述炉床（20）能够在在一端至少有一层氧化铁和碳载体材料，并且能够在另一端排出还原材料。隔热隔板（92）位于转化区（13）的至少一部分的相邻的移动炉床之间，并且能够在相邻移动炉膛的转化区的气氛之间连通气体。干燥/预热区（12），转化区（13）和任选的冷却区（15）沿着炉壳（11）中的每个移动的炉床（30）顺序地定位。

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