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公开(公告)号：US20240175101A1
公开(公告)日：2024-05-30
申请号：US18551597
申请日：2021-12-03
发明人： Koki TERUI , Takahide HIGUCHI , Tetsuya YAMAMOTO
CPC分类号： C21B13/02 , C21B13/0073 , C22B1/16
摘要： Provided is a reduced iron production method that can efficiently produce reduced iron without preheating raw materials. The reduced iron production method includes charging an agglomerate, which is a raw material of reduced iron, into a reducing furnace while introducing a reducing gas, which contains hydrogen as a main component, into the reducing furnace, and reducing iron oxide contained in the agglomerate by the reducing gas to obtain reduced iron, where the agglomerate to be charged into the reducing furnace is an agglomerate that retains heat obtained during its production, and the heat is used in a reduction reaction of the iron oxide.
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公开(公告)号：US20240279758A1
公开(公告)日：2024-08-22
申请号：US18564756
申请日：2022-04-08
发明人： Kota MORIYA , Koki TERUI , Sumito OZAWA
CPC分类号： C21B13/0046 , C22B1/16
摘要： To provide a method for producing agglomerated ore, with which reduced iron can be efficiently produced by hydrogen reduction, without the need for preheating raw material and raising the temperature of reducing gas. A method for producing agglomerated ore, the method including sintering a sintering raw material containing an iron-containing raw material and a condensation material in a sintering machine to form a sinter cake, and obtaining agglomerated ore by crushing the sinter cake, in which iron oxide contained in the sinter cake is reduced by distributing a reducing gas through the sinter cake on the sintering machine, to make a degree of reduction of iron oxide contained in the agglomerated ore after crushing 50% or more.
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公开(公告)号：US20240167110A1
公开(公告)日：2024-05-23
申请号：US18551401
申请日：2021-12-03
发明人： Takahide HIGUCHI , Tetsuya YAMAMOTO , Koki TERUI
IPC分类号： C21B5/00
摘要： Provided is a raw material particle for production of agglomerate that can be used to produce an agglomerate with better reducing performance than conventional agglomerates. The raw material particle 1(2) of the present disclosure is a raw material particle for producing an agglomerate as a raw material for producing reduced iron, including a central part 11(21), and a peripheral part 12(22) that covers the periphery of the central part 11(21). The central part 11 has a metal iron-containing substance, the central part 12 has a volatile substance, and the peripheral part 12(22) has iron oxide.
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