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1. 发明公开

EP4339311A1 ORE CRUSHING METHOD AND PELLET PRODUCTION METHOD 审中-实审
公开(公告)号：EP4339311A1
公开(公告)日：2024-03-20
申请号：EP22819846.1
申请日：2022-03-04
申请人： JFE Steel Corporation
发明人： TAKEHARA, Kenta , YAMAMOTO, Tetsuya , HIGUCHI, Takahide , HORITA, Kenya , IWAMI, Yuji , FUJIWARA, Shohei , MORITA, Yuya , HIROSAWA, Toshiyuki , IGAWA, Daisuke
IPC分类号： C22B1/14 , C22B1/16 , B02C17/04
摘要： Provided is an ore crushing method capable of efficiently crushing iron ores that are difficult to finely crush. The ore crushing method includes coarsely crushing the iron ores to reduce the proportion of particles with a particle size of greater than or equal to 1 mm, and then finely crushing the iron ores to increase the proportion of particles with a particle size of less than 63 µm. The average pore size of the iron ores is preferably less than or equal to 10 µm, the proportion of the particles with a particle size of greater than or equal to 1 mm in the iron ores is preferably greater than or equal to 30 mass%, the iron ores are preferably coarsely crushed so that the proportion of the particles with a particle size of greater than or equal to 1 mm becomes less than or equal to 20 mass%, the iron ores are preferably finely crushed so that the proportion of the particles with a particle size of less than 63 µm becomes greater than or equal to 70 mass%, and the iron ores are preferably finely crushed with a wet ball mill. A pellet production method is also provided that includes granulating a raw material, which includes the iron ores crushed with the ore crushing method, into pellets.

2. 发明授权

EP2851438B1 METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE 有权
标题翻译：方法进行充电原料送入高炉
公开(公告)号：EP2851438B1
公开(公告)日：2016-10-05
申请号：EP13791652.4
申请日：2013-05-16
申请人： JFE Steel Corporation
发明人： ICHIKAWA, Kazuhira , ISHII, Jun , HIROSAWA, Toshiyuki , WATAKABE, Shiro
IPC分类号： C21B5/00 , C21B7/18 , F27B1/20 , C21B7/20
CPC分类号： C21B5/007 , C21B5/008 , C21B7/20 , F27B1/20

3. 发明公开

EP3266884A1 QUASIPARTICLES FOR SINTERING AND METHOD OF PRODUCING SAME 有权
标题翻译：用于烧结的准粉末及其制造方法
公开(公告)号：EP3266884A1
公开(公告)日：2018-01-10
申请号：EP15875382.2
申请日：2015-03-06
申请人： JFE Steel Corporation
发明人： HIROSAWA, Toshiyuki , HIGUCHI, Takahide , YAMAMOTO, Tetsuya , OYAMA, Nobuyuki
IPC分类号： C22B1/16 , C22B1/243
CPC分类号： C22B1/16 , C22B1/243
摘要： To improve reducibility of sintered ore, disclosed is a quasiparticle for sintering including, at least, iron ore raw material, limestone-based raw material, and solid fuel-based raw material, each being used to produce sintered ore for blast furnaces, in which the iron ore raw material forms a core of the quasiparticle, and the limestone-based raw material and the solid fuel-based raw material are coated on the circumference of the core, and in which the core formed of the iron ore raw material contains general iron ore having an alkali metal content of less than 0.05 mass% and high-alkaline iron ore having an alkali metal content of 0.05 mass% or more.
摘要翻译：为了提高烧结矿的还原性，公开了烧结用准粒子，至少包括用于制造高炉用烧结矿的铁矿石原料，石灰石系原料和固体燃料系原料，其中，铁矿石原料形成准粒子的核，石灰石基原料和固体燃料基原料被涂覆在核的周围，并且由铁矿石原料形成的核包含通常的碱金属含量小于0.05质量％的铁矿石和碱金属含量为0.05质量％以上的高碱性铁矿石。

4. 发明公开

EP2851435A1 METHOD FOR CHARGING STARTING MATERIAL INTO BLAST FURNACE 有权
标题翻译：将起动材料装入高炉的方法
公开(公告)号：EP2851435A1
公开(公告)日：2015-03-25
申请号：EP13790679.8
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , ICHIKAWA, Kazuhira
IPC分类号： C21B5/00
CPC分类号： C21B5/007 , C21B5/006 , C21B5/008 , C21B7/20
摘要： A method for charging blast furnace raw material into a blast furnace, comprising, when charging blast furnace raw material including coke and ore material such as sinter, pellet, or lump ore into the blast furnace using a rotating chute, forming a central coke layer at a shaft central portion of the blast furnace; and forming a mixed layer of the coke and the ore material on the outside of the central coke layer with a coke mixing ratio varying in a continuous or stepwise manner from the shaft of the blast furnace towards the furnace wall in the blast furnace radial direction. The method ensures gas permeability in the blast furnace, stabilizes blast furnace operations, and improves thermal efficiency even when an operation to blow in a large amount of pulverized coal is performed.
摘要翻译： 1.一种将高炉原料投入高炉的方法，其特征在于，在使用旋转溜槽向高炉内投入含有焦炭和烧结矿，球团矿，块矿等矿石原料的高炉原料时，在高炉中形成中心焦炭层高炉的轴心部分; 以及在中心焦炭层的外侧形成焦炭和矿石材料的混合层，其焦炭混合比从高炉炉身轴向炉壁沿高炉径向连续或逐步地变化。该方法确保了高炉中的气体渗透性，使高炉操作稳定，并且即使在进行大量粉煤吹入操作时也提高了热效率。

5. 发明授权

EP2851436B1 METHOD FOR CHARGING STARTING MATERIAL INTO BLAST FURNACE 有权
标题翻译：方法加载的原料送入高炉
公开(公告)号：EP2851436B1
公开(公告)日：2016-09-14
申请号：EP13790736.6
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , ICHIKAWA, Kazuhira
IPC分类号： C21B7/20 , F27B1/20 , C21B5/00
CPC分类号： C21B5/006 , C21B5/008 , C21B7/20 , F27B1/20

6. 发明授权

EP2851435B1 METHOD FOR CHARGING STARTING MATERIAL INTO BLAST FURNACE 有权
公开(公告)号：EP2851435B1
公开(公告)日：2019-07-31
申请号：EP13790679.8
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , ICHIKAWA, Kazuhira
IPC分类号： C21B5/00 , C21B7/20

7. 发明授权

EP2851434B1 METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE 有权
公开(公告)号：EP2851434B1
公开(公告)日：2019-02-20
申请号：EP13790282.1
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： ICHIKAWA, Kazuhira , WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , MURAO, Akinori
IPC分类号： C21B5/00 , C21B7/20 , F27D3/00 , F27B1/20 , F27D3/10

8. 发明授权

EP2851437B1 METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE 有权
公开(公告)号：EP2851437B1
公开(公告)日：2018-10-03
申请号：EP13791416.4
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： HIROSAWA, Toshiyuki , WATAKABE, Shiro , ISHII, Jun , ICHIKAWA, Kazuhira
IPC分类号： C21B5/00 , C21B7/20 , F27B1/20
CPC分类号： C21B5/006 , C21B5/008 , C21B7/20 , F27B1/20
摘要： According to the present invention, by setting the average layer thickness L av1 at each rotation of the rotating chute, calculated by Expression 1, to be smaller than the thickness h of coke charged into the shaft central portion of the blast furnace, it is possible to provide a method for charging raw material into a blast furnace that ensures gas permeability in the blast furnace, stabilizes blast furnace operations, and improves thermal efficiency even when the amount of coke is small, or an operation to blow in a large amount of pulverized coal is performed. Expression 1 is L av1 = V n /((R n 2 -R n-1 2 )À), where V n is the charged raw material volume (m 3 ) per rotation at the n th rotation, and R n is the falling radius (m) of charged raw material at the n th rotation.

9. 发明公开

EP2851436A1 METHOD FOR CHARGING STARTING MATERIAL INTO BLAST FURNACE 有权
标题翻译：将起动材料装入高炉的方法
公开(公告)号：EP2851436A1
公开(公告)日：2015-03-25
申请号：EP13790736.6
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , ICHIKAWA, Kazuhira
IPC分类号： C21B5/00
CPC分类号： C21B5/006 , C21B5/008 , C21B7/20 , F27B1/20
摘要： A method for charging blast furnace raw material into a blast furnace, comprising, when charging blast furnace raw material including coke and ore material such as sintered ore, pellet, or lump ore into the blast furnace using a rotating chute: charging 60 mass% to 75 mass% of a total amount of coke into the blast furnace in the form of a mixed layer of coke and ore material, while allowing the remaining 25 mass% to 40 mass% of coke to remain as a coke slit. The method advantageously addresses the concern that gas permeability may deteriorate when charging ore material and coke in the form of a mixed layer into the blast furnace.
摘要翻译： 1.一种将高炉原料投入高炉的方法，其特征在于，使用旋转滑槽向高炉内投入含有焦炭和烧结矿，粒料，块矿等矿石原料的高炉原料时，将60质量％〜以焦炭和矿石材料的混合层的形式将焦炭总量的75质量％以焦炭的残留25质量％〜40质量％残留为焦炭狭缝。该方法有利地解决了当将矿石材料和焦炭以混合层的形式装入高炉时气体渗透性可能恶化的担忧。

10. 发明公开

EP2851434A1 METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE 有权
标题翻译：将原料装入高炉的方法
公开(公告)号：EP2851434A1
公开(公告)日：2015-03-25
申请号：EP13790282.1
申请日：2013-05-17
申请人： JFE Steel Corporation
发明人： ICHIKAWA, Kazuhira , WATAKABE, Shiro , ISHII, Jun , HIROSAWA, Toshiyuki , MURAO, Akinori
IPC分类号： C21B5/00 , C21B7/20
CPC分类号： C21B7/20 , C21B5/007 , C21B5/008 , F27B1/20 , F27D3/0033 , F27D3/10
摘要： A method for charging blast furnace raw material into a blast furnace, includes, when charging blast furnace raw material including coke and ore material such as sintered ore, pellet, or lump ore into the blast furnace using a rotating chute: mixing the ore material with the coke to produce mixed material; and charging the mixed material into the blast furnace to form a mixed layer in a predetermined region in the blast furnace, in which the mixed material is discharged into the blast furnace at a discharge rate of 1.5 t/s or more to thereby improve homogeneity of the mixed layer.
摘要翻译：作为将高炉原料装入高炉的方法，在使用旋转溜槽向高炉内投入含有焦炭和烧结矿，粒料，块矿等矿石原料的高炉原料时，将矿石原料与生产混合材料的焦炭; 将混合后的材料投入到高炉中，在高炉的规定区域形成混合层，以1.5t / s以上的排出速度将混合材料排出到高炉中，从而提高混合材料的均匀性混合层。

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