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    • 5. 发明申请
    • PRODUCTION OF IRON FROM METALLURGICAL WASTE
    • 从冶金废料中生产铁
    • WO2010085635A3
    • 2010-12-09
    • PCT/US2010021790
    • 2010-01-22
    • NU IRON TECHNOLOGY LLCHENRICKSON DAVID WIWASAKI IWAO
    • HENRICKSON DAVID WIWASAKI IWAO
    • C22B7/04
    • C22B1/245C21B13/0066C21B13/008C21B13/10C22B5/10Y02P10/216
    • 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.
    • 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。
    • 9. 发明申请
    • RECLAIMING AND INHIBITING ACTIVATION OF DRI FINES
    • 恢复和抑制DRI FINES的激活
    • WO2013169673A1
    • 2013-11-14
    • PCT/US2013/039767
    • 2013-05-06
    • NU-IRON TECHNOLOGY, LLC
    • HENDRICKSON, DavidBRANDON, JohnHART, LesANDERSON, John
    • C22B1/14C21B13/00
    • C21B13/0093C22B1/14Y02P10/136
    • 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 200F 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.
    • 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70-200°F熔点且包含至少一种抗氧化剂和至少一种抗氧化剂 具有选自可涂覆脂肪酸及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粉粘附在一起并形成多个DRI附聚物 。 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。
    • 10. 发明申请
    • PRODUCTION OF IRON FROM METALLURGICAL WASTE
    • 从冶金废物生产铁
    • WO2010085635A2
    • 2010-07-29
    • PCT/US2010/021790
    • 2010-01-22
    • NU-IRON TECHNOLOGY, LLCHENRICKSON, David, W.IWASAKI, Iwao
    • HENRICKSON, David, W.IWASAKI, Iwao
    • C22B7/04
    • C22B1/245C21B13/0066C21B13/008C21B13/10C22B5/10Y02P10/216
    • 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.
    • 一种在炼钢中从含铁冶金废料中回收金属铁的方法,包括提供含铁超过55重量%的FeO和FeO当量的铁含量的冶金废物和小于10目的至少80%的粒度的混合物 具有碳质材料的含铁冶金废料形成可还原的混合物,其中碳质材料是将含铁废物还原成金属铁所需的化学计量的80至110%,并根据需要添加以提供二氧化硅含量 在0.8至8重量%之间,CaO / SiO 2的比例在1.4和1.8之间,在炉床材料层上形成可还原混合物的团块以保护炉床,将附聚物加热到高于铁的熔点的较高温度以形成 通过熔化来自附聚物的金属铁和矿渣材料的结核。