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公开(公告)号：EP4431197A1
公开(公告)日：2024-09-18
申请号：EP22915644.3
申请日：2022-12-05
发明人： SAKURAI, Yuta , ODAGAKI, Tomoya , TSUZUMI, Kenji , MATSUI, Akitoshi , MOCHIDA, Tetsuo , KIKUCHI, Naoki
摘要： A method for producing Cu-Sn-containing steel is provided that can be hot-worked at low cost without surface cracking even when a heating furnace with a low heating capacity is used for the hot working.
A method for producing Cu-Sn-containing steel includes a hot heating step of attaching a flux to a surface of a Cu-Sn-containing cast steel in such an amount that the mass per unit area is 50 g/m2 or more and 5000 g/m2 or less, and heating the Cu-Sn-containing cast steel at a temperature of 1000°C or above and 1400°C or below, the flux including at least any of B2O3, P2O5, K2O, PbO, Na2O-FeO, Na2O-SiO2, Na2O-TiO2, and Li2O-SiO2 components and being such that the liquid phase ratio at 1000°C is 10 mass% or more; and a hot working step of hot working the Cu-Sn-containing cast steel.-
12.发明公开
公开(公告)号：EP4151335A1
公开(公告)日：2023-03-22
申请号：EP21826706.0
申请日：2021-04-09
发明人： MASUDA, Ryosuke , HASHIMOTO, Yoshinari , MATSUI, Akitoshi , MORITA, Shugo , HAYASHIDA, Tatsuro , KORIYAMA, Taiga , HIRATA, Takehide
IPC分类号： B22D11/16
摘要： A breakout prediction method includes: a step of inputting a dimension of a solid product withdrawn from a mold in a continuous casting machine; a step of detecting a temperature of the mold by a plurality of thermometers embedded in the mold; a step of executing interpolation processing on the detected temperatures detected by the plurality of thermometers according to the dimension of the solid product; a step of calculating, based on the temperatures calculated by executing the interpolation processing, a component in a direction orthogonal to an influence coefficient vector obtained by principal component analysis as a degree of deviation from during a normal operation in which a breakout has not occurred; and a step of predicting a breakout based on the degree of deviation.
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公开(公告)号：EP2383352B1
公开(公告)日：2018-10-31
申请号：EP09835099.4
申请日：2009-12-22
CPC分类号： C22B7/04 , C04B5/06 , C21B3/06 , C21C1/025 , C21C7/0087 , C21C7/076 , C22B5/04 , C22B5/10 , Y02P10/216 , Y02P10/234 , Y02P10/242 , Y02W30/543
摘要： The invention provides a method for recovering (collecting) iron and phosphorus from steelmaking slag, which includes a first step in which phosphorus-containing steelmaking slag such as dephosphorization slag is reduced using a reducing agent containing for example carbon, Si or Al to reduce iron oxide and phosphorus oxide in the slag and to recover them as phosphorus-containing molten iron, a second step in which the steelmaking slag from which the iron oxide and the phosphorus oxide have been removed is used as a CaO source in a sintering step and the resultant sintered ore is recycled to a blast furnace, a third step in which the phosphorus-containing molten iron recovered by the reduction is dephosphorized to a phosphorus concentration in the phosphorus-containing molten iron of not more than 0.1% by mass, thereby phosphorus being concentrated in a CaO-containing flux, and a fourth step in which the phosphorus-containing molten iron dephosphorized to a phosphorus concentration of not more than 0.1% by mass is mixed as an iron source with a blast furnace hot metal. The method thus enables inexpensive recovery of phosphorus and iron from the steelmaking slag, and the phosphorus and the iron recovered are effectively used as resources.
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公开(公告)号：EP2248916B1
公开(公告)日：2013-10-30
申请号：EP09717326.4
申请日：2009-03-03
CPC分类号： C22B9/106 , C21C1/025 , C21C7/0645 , C21C2200/00 , C22B1/005 , C22B9/10 , C22B15/0056 , Y02P10/214 , Y02P10/22 , Y02P10/234 , Y02P10/236
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