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1. 发明申请

WO2010085635A3 PRODUCTION OF IRON FROM METALLURGICAL WASTE 审中-公开
标题翻译：从冶金废料中生产铁
公开(公告)号：WO2010085635A3
公开(公告)日：2010-12-09
申请号：PCT/US2010021790
申请日：2010-01-22
申请人： NU IRON TECHNOLOGY LLC , HENRICKSON DAVID W , IWASAKI IWAO
发明人： HENRICKSON DAVID W , IWASAKI IWAO
IPC分类号： C22B7/04
CPC分类号： C22B1/245 , C21B13/0066 , C21B13/008 , C21B13/10 , C22B5/10 , Y02P10/216
摘要： A method of recovering metallic iron from iron-bearing metallurgical waste in steelmaking comprising steps of providing an iron-bearing metallurgical waste containing more than 55 % by weight FeO and FeO equivalent and a particle size of at least 80 % less than 10 mesh, mixing the iron-bearing metallurgical waste with a carbonaceous material to form a reducible mixture where the carbonaceous material is between 80 and 110 % of the stoichiometric amount needed to reduce the iron-bearing waste to metallic iron, and as needed additions to provide a silica content between 0.8 and 8 % by weight and a ratio of CaO/SiO2 between 1.4 and 1.8, forming agglomerates of the reducible mixture over a hearth material layer to protect the hearth, heating the agglomerates to a higher temperature above the melting point of iron to form nodules of metallic iron and slag material from the agglomerates by melting.
摘要翻译：在炼钢中从含铁冶金废料中回收金属铁的方法包括以下步骤：提供含有55重量％以上的FeO和FeO当量和粒度至少80％小于10目的含铁冶金废料，混合该含铁冶金废料与含碳材料形成可还原混合物，其中含碳材料为将含铁废物还原成金属铁所需的化学计量量的80-110％，并且根据需要添加以提供二氧化硅含量 0.8-8重量％和CaO / SiO2之比为1.4-1.8，在炉底材料层上形成可还原混合物的附聚物以保护炉膛，将附聚物加热至高于铁熔点的温度以形成金属铁结块和矿渣材料通过熔化从附聚物中析出。

2. 发明申请

WO2012087829A3 USE OF BIMODAL CARBON DISTRIBUTION IN COMPACTS FOR PRODUCING METALLIC IRON NODULES 审中-公开
标题翻译：二氧化碳分配在生产金属铁矿石的混合物中的应用
公开(公告)号：WO2012087829A3
公开(公告)日：2012-11-08
申请号：PCT/US2011065526
申请日：2011-12-16
申请人： IWASAKI IWAO , NU IRON TECHNOLOGY LLC
发明人： IWASAKI IWAO
IPC分类号： C21B11/00 , C21B11/08
CPC分类号： C21B11/08 , C21B13/004 , C21B13/0066 , C21B13/10 , Y02P10/216
摘要： A method for use in production of metallic iron nodules comprising providing a reducible mixture into a hearth furnace for the production of metallic iron nodules, where the reducible mixture comprises a quantity of reducible iron bearing material, a quantity of first carbonaceous reducing material of a size less than about 28 mesh of an amount between about 65 percent and about 95 percent of a stoichiometric amount necessary for complete iron reduction of the reducible iron bearing material, and a quantity of second carbonaceous reducing material with an average particle size greater than average particle size of the first carbonaceous reducing material and a size between about 3 mesh and about 48 mesh of an amount between about 20 percent and about 60 percent of a stoichiometric amount of necessary for complete iron reduction of the reducible iron bearing material.
摘要翻译：一种用于生产金属铁结核的方法，包括将可还原的混合物提供到用于生产金属铁结核的炉底炉中，其中可还原的混合物包含一定数量的可还原铁轴承材料，一定量的第一碳质还原材料小于约28目的量的可还原性铁轴承材料的完全铁还原所需的化学计量的约65％至约95％的量，以及平均粒径大于平均粒度的第二碳质还原材料的量的第一碳质还原材料，并且约3目和约48目之间的尺寸为可还原铁轴承材料的完全铁还原所需的化学计量量的约20％至约60％之间的量。

3. 发明申请

WO2009105320A3 METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS 审中-公开
标题翻译：生产金属铁块的方法和系统
公开(公告)号：WO2009105320A3
公开(公告)日：2009-10-22
申请号：PCT/US2009032519
申请日：2009-01-30
申请人： NU IRON TECHNOLOGY LLC , IWASAKI IWAO , ENGLUND DAVID J , KIESEL RICHARD F
发明人： IWASAKI IWAO , ENGLUND DAVID J , KIESEL RICHARD F
IPC分类号： C21B11/08 , C21B13/10
CPC分类号： C21B13/105 , C21B13/0046 , C21B2300/04 , C22B1/245 , C22B5/10
摘要： A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425 °C or 1400 °C or 1375 °C results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.
摘要翻译：用于生产金属铁块的方法和系统可以包括提供还原材料（例如含碳材料）和可还原含铁材料（诸如氧化铁）的可还原混合物的多层附聚物（例如团块，球和挤出物））置于炉底材料层（例如含碳材料）上并在至少一些附聚物上提供碳质材料的粗糙覆盖层。将可还原混合物的附聚物加热至1425℃或1400℃或1375℃导致形成一种或多种可能具有小于0.03％的硫含量的金属铁矿块和炉渣的中间产物，具有小于5％的MgO质量，其可以具有至少约12或至少约15的炉渣中的硫重量百分比与金属块中的硫重量百分比的比率。

4. 发明专利

JP2013040407A Method and system for producing metallic iron nugget 审中-公开
标题翻译：用于生产金属铁素体的方法和系统
公开(公告)号：JP2013040407A
公开(公告)日：2013-02-28
申请号：JP2012210235
申请日：2012-09-24
申请人： Nu-Iron Technology Llc , ニュー−アイロンテクノロジーリミテッドライアビリティーカンパニー
发明人： IWASAKI IWAO , LALICH MICHAEL C , BEAUDIN ROBERT C , KIESEL RICHARD F , LINDGREN ANDREW L , BLEIFUSS RODNEY L
IPC分类号： C21B13/10
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： PROBLEM TO BE SOLVED: To provide a reduction treatment, such as control of the size of an iron nugget, control of micro-nugget formation and control of sulfur content in an iron nugget, in production of a metallic iron nugget.SOLUTION: A 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.
摘要翻译：要解决的问题：在生产金属铁块时，提供诸如控制铁熔块的尺寸，控制微块形成和控制铁熔体中的硫含量的还原处理。解决方案：用于生产金属块的方法和系统包括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，包括添加剂如助熔剂;压实体等）至少一部分炉床材料层。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。版权所有（C）2013，JPO＆INPIT

5. 发明公开

EP2047000A4 METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS 审中-公开
标题翻译：生产铁液的方法和系统
公开(公告)号：EP2047000A4
公开(公告)日：2010-04-14
申请号：EP07813408
申请日：2007-07-26
申请人： NU IRON TECHNOLOGY LLC
发明人： IWASAKI IWAO , LINDGREN ANDREW J , KIESEL RICHARD F
IPC分类号： C21B13/00 , C21B13/10
CPC分类号： C21B13/0046 , C21B13/008 , C21B13/105

6. 发明公开

EP2247759A4 METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS 有权
标题翻译：方法和系统对铁的凝乳生产
公开(公告)号：EP2247759A4
公开(公告)日：2012-03-14
申请号：EP09712738
申请日：2009-01-30
申请人： NU IRON TECHNOLOGY LLC
发明人： IWASAKI IWAO , ENGLUND DAVID J , KIESEL RICHARD F
IPC分类号： C22B1/14 , C22B1/16
CPC分类号： C21B13/105 , C21B13/0046 , C21B2300/04 , C22B1/245 , C22B5/10

7. 发明专利

AU2010206718B2 Production of iron from metallurgical waste 未知
公开(公告)号：AU2010206718B2
公开(公告)日：2015-10-22
申请号：AU2010206718
申请日：2010-01-22
申请人： NU IRON TECHNOLOGY LLC
发明人： HENRICKSON DAVID W , IWASAKI IWAO
IPC分类号： C22B7/04
摘要： A method of recovering metallic iron from iron-bearing metallurgical waste in steelmaking comprising steps of providing an iron-bearing metallurgical waste containing more than 55 % by weight FeO and FeO equivalent and a particle size of at least 80 % less than 10 mesh, mixing the iron-bearing metallurgical waste with a carbonaceous material to form a reducible mixture where the carbonaceous material is between 80 and 110 % of the stoichiometric amount needed to reduce the iron-bearing waste to metallic iron, and as needed additions to provide a silica content between 0.8 and 8 % by weight and a ratio of CaO/SiO2 between 1.4 and 1.8, forming agglomerates of the reducible mixture over a hearth material layer to protect the hearth, heating the agglomerates to a higher temperature above the melting point of iron to form nodules of metallic iron and slag material from the agglomerates by melting.

8. 发明专利

AU2007303141B2 System and method of producing metallic iron 未知
公开(公告)号：AU2007303141B2
公开(公告)日：2012-07-26
申请号：AU2007303141
申请日：2007-10-04
申请人： NU IRON TECHNOLOGY LLC
发明人： BRANDON MARK , ENGLUND DAVID , IWASAKI IWAO , TRUE BRADFORD , FOSNACHT DONALD , BLEIFUSS RODNEY
IPC分类号： C22B5/02 , C21B13/10 , C21B15/00 , F27B3/00
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 movable hearth (20) 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).

9. 发明专利

AU2005313001B2 Method and system for producing metallic iron nuggets 未知
公开(公告)号：AU2005313001B2
公开(公告)日：2010-06-24
申请号：AU2005313001
申请日：2005-12-07
申请人： NU IRON TECHNOLOGY LLC
发明人： LALICH MICHAEL C , KIESEL RICHARD F , BLEIFUSS RODNEY L , BEAUDIN ROBERT C , IWASAKI IWAO , LINDGREN ANDREW L
IPC分类号： C21B13/00 , C21B13/10
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.

10. 发明专利

CA2661419A1 SYSTEM AND METHOD FOR PRODUCING METALLIC IRON 未知
公开(公告)号：CA2661419A1
公开(公告)日：2009-10-03
申请号：CA2661419
申请日：2009-04-03
申请人： NU IRON TECHNOLOGY LLC
发明人： TRUE BRADLEY G , IWASAKI IWAO , FOSNACHT DONALD R , BRANDON MARK M , ENGLUND DAVID J , BLEIFUSS RODNEY L
IPC分类号： C21B11/08 , C21B13/10 , C21B13/14 , C21C5/04 , C22B5/10
摘要： A hearth furnace 10 for producing metallic iron material has a furnace housi ng 11 having a drying/preheat zone 12, a conversion zone 13, a fusion zone 14, and optional ly a cooling zone 15, the conversion zone 13 is between the drying/preheat zone 12 and th e fusion zone 14. A moving hearth 20 is positioned within the furnace housing 11. A hood o r separation barrier 30 within at least a portion of the conversion zone 13, fusion zone 14 or both separates the fusion zone 14 into an upper region and a lower region with th e lower region adjacent the hearth 20 and the upper region adjacent the lower region and spaced from the hearth 20. An injector introduces a gaseous reductant into the lower region adjacent the hearth 20. A combustion region may be formed above the hood or separation barrier.

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