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公开(公告)号：EP4411007A1
公开(公告)日：2024-08-07
申请号：EP22876452.8
申请日：2022-09-29
发明人： MIZUTANI, Moritoshi
摘要： This ironmaking method includes an ore beneficiation step in which a high combined water content iron ore having a loss of ignition of 3 to 12 mass% is beneficiated into a goethite-rich part having at least a loss of ignition of 4 mass% or more and an iron content of 55 mass% or more; a first agglomeration processing step in which the goethite-rich part is agglomerated into first fired pellets in a pellet induration furnace; and a first reduction step in which the first fired pellets are charged into a shaft furnace while the first fired pellets have a surface temperature of 600°C or higher, and directly reduced using a reducing gas containing 60 volume% or more of hydrogen.
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公开(公告)号：EP4144868B1
公开(公告)日：2024-07-24
申请号：EP21797227.2
申请日：2021-01-06
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公开(公告)号：EP4328341A3
公开(公告)日：2024-07-17
申请号：EP23214938.5
申请日：2021-09-25
IPC分类号： C22B5/12 , C22B5/02 , C22B5/10 , C10B53/02 , C10J3/62 , C10K3/00 , C21B5/00 , C22B1/24 , C22B1/242
CPC分类号： C10B53/02 , C21B5/008 , C22B1/2406 , C22B5/12 , C10K3/005 , C10J2300/09420130101 , C10J3/62 , C10J2300/095620130101 , C22B1/242 , Y02E50/30 , Y02E50/10 , Y02P20/145 , Y02P20/133 , C22B5/02 , C22B5/10
摘要： Some variations provide a composition for reducing a metal ore, the composition comprising a carbon-metal ore particulate, wherein the carbon-metal ore particulate comprises at least about 0.1 wt% to at most about 50 wt% fixed carbon on a moisture-free and ash-free basis, and wherein the carbon is at least 50% renewable carbon as determined from a measurement of the 14C/12C isotopic ratio. Some variations provide a process for reducing a metal ore, comprising: providing a biomass feedstock; pyrolyzing the feedstock to generate a biogenic reagent comprising carbon and a pyrolysis off-gas comprising hydrogen or carbon monoxide; obtaining a metal ore comprising a metal oxide; combining the carbon with the metal ore, to generate a carbon-metal ore particulate; optionally pelletizing the carbon-metal ore particulate; and utilizing the pyrolysis off-gas to chemically reduce the metal oxide to elemental metal, such as iron. The disclosed technologies are environmentally superior to conventional processes based on coal.
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4.发明公开
公开(公告)号：EP4349937A3
公开(公告)日：2024-06-26
申请号：EP24150681.5
申请日：2021-11-19
IPC分类号： C10B47/28 , C01B3/12 , C01B3/34 , C01B3/50 , C01B3/56 , C01B32/324 , C10J3/46 , C10J3/62 , C10J3/66 , C10J3/64 , C01B3/58 , C22B1/242 , C22B1/24 , C21C5/35 , C21C5/34 , C21B5/00 , C21B13/00 , C21C5/30 , C21C5/32 , C21C5/52 , C22B5/12
CPC分类号： C10J3/62 , C10J3/66 , C10J2300/091620130101 , C10J2300/095620130101 , C10J2300/097620130101 , C10J2300/098620130101 , C10J2300/095920130101 , C10J3/463 , C10J2300/120720130101 , C01B32/324 , Y02P20/52 , Y02P20/145 , C21B13/008 , C21B5/001 , C21C5/5217 , C21B2005/00520130101 , C21C5/32 , C21C5/34 , C21C5/35 , C21C5/30 , C01B3/12 , C01B3/501 , C01B3/506 , C01B3/56 , C22B5/12 , C22B1/2413 , C22B1/242 , Y02E50/10 , Y02E60/36 , C10J3/64 , C01B3/32
摘要： Improved processes and systems are disclosed for producing renewable hydrogen suitable for reducing metal ores, as well as for producing activated carbon. Some variations provide a process comprising: pyrolyzing biomass to generate a biogenic reagent comprising carbon and a pyrolysis off-gas; converting the pyrolysis off-gas to additional reducing gas and/or heat; reacting at least some of the biogenic reagent with a reactant to generate a reducing gas; and chemically reducing a metal oxide in the presence of the reducing gas. Some variations provide a process for producing renewable hydrogen by biomass pyrolysis to generate a biogenic reagent, conversion of the biogenic reagent to a reducing gas, and separation and recovery of hydrogen from the reducing gas. A reducing-gas composition for reducing a metal oxide is provided, comprising renewable hydrogen according to a hydrogen-isotope analysis. Reacted biogenic reagent may also be recovered as an activated carbon product. Many variations are disclosed.
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公开(公告)号：EP4150033B1
公开(公告)日：2024-06-26
申请号：EP21727787.0
申请日：2021-05-14
CPC分类号： C10L5/46 , C10L5/40 , C10L5/361 , C10L2230/0820130101 , C10L2290/3020130101 , C10L2290/2420130101 , C10L2290/5220130101 , C10L2290/2820130101 , C10L5/44 , C10L5/48 , C10L2200/020420130101 , C10L2200/020920130101 , C10L2290/0220130101 , C21C2007/003120130101 , C21C7/0025 , C21C7/0006 , Y02P10/20 , Y02E50/30 , Y02E50/10
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公开(公告)号：EP3412780B1
公开(公告)日：2024-04-17
申请号：EP16889314.7
申请日：2016-02-05
CPC分类号： C21B2100/2220170501 , C21B2100/2620170501 , C21B5/001 , C21B5/06 , C21B2005/00520130101 , C21C1/10 , Y02P10/122 , Y02P10/25
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公开(公告)号：EP4341450A1
公开(公告)日：2024-03-27
申请号：EP22729454.3
申请日：2022-05-11
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公开(公告)号：EP4332243A1
公开(公告)日：2024-03-06
申请号：EP22832514.8
申请日：2022-03-25
摘要： A supplied heat quantity estimation method according to the present invention is a supplied heat quantity estimation method for estimating a quantity of heat supplied to pig iron in a blast furnace from a quantity of heat supplied into the blast furnace and a production speed of molten iron in the blast furnace, the supplied heat quantity estimation method including an estimation step of estimating a change in carried out sensible heat by in-furnace passing gas and a change in carried in sensible heat supplied by a raw material preheated by the in-furnace passing gas, and estimating the quantity of heat supplied to pig iron in the blast furnace in consideration of the estimated changes of the carried out sensible heat and the carried in sensible heat, in which the estimation step includes a step of estimating changes of the carried out sensible heat and the carried in sensible heat in consideration of a quantity of heat released to an outside of a blast furnace by blow-by, and a step of estimating a quantity of heat held in deadman coke present in the blast furnace, and estimating the quantity of heat supplied to pig iron in a blast furnace in consideration of the estimated quantity of heat held in deadman coke.
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公开(公告)号：EP4306660A1
公开(公告)日：2024-01-17
申请号：EP22824560.1
申请日：2022-03-10
IPC分类号： C21B5/00
摘要： A high hot metal temperature is ensured even when the heat flow ratio in a lower portion of a furnace is high.
An oxygen blast furnace 1 includes a furnace body 2 into which a raw material is charged, and a tuyere 3 for injecting a blast gas and a reducing agent into the furnace body 2. The blast gas has an oxygen concentration of 50% by volume or more. A heat flow ratio β, represented by the following equation (1), in a lower portion of the furnace is 0.8 or more. The ratio (D/R) of the distance D (m) from the front end of a raceway, formed in front of the tuyere, to a furnace wall to the radius R (m) of the furnace body at the height of the tuyere satisfies the following inequation (2). β = C pig + C slag + C coke / C gas D / R > 0.13 β + 0.07 where C pig is the heat capacity (W/K) of hot metal in the lower portion of the furnace, C slag is the heat capacity (W/K) of slag in the lower portion of the furnace, C coke is the heat capacity (W/K) of coke in the lower portion of the furnace, and C gas is the heat capacity (W/K) of reducing gas in the lower portion of the furnace.
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