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11. 发明授权

EP2248916B1 PROCESS FOR REMOVAL OF COPPER CONTAINED IN STEEL SCRAPS 有权
标题翻译：程序用于去除废钢配件包含铜
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
申请人： JFE Steel Corporation
发明人： MATSUI, Akitoshi , UCHIDA, Yuichi , KISHIMOTO, Yasuo , OGASAWARA, Futoshi
IPC分类号： C21C1/04 , C21C1/02 , C22B7/00 , C22B9/10 , F27B1/00 , C21C7/064
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

12. 发明公开

EP4066961A1 METHOD FOR CASTING MOLTEN STEEL, METHOD FOR PRODUCING CONTINUOUS CAST SLAB, AND METHOD FOR PRODUCING STEEL FOR BEARING 审中-公开
公开(公告)号：EP4066961A1
公开(公告)日：2022-10-05
申请号：EP20894667.3
申请日：2020-10-28
申请人： JFE Steel Corporation
发明人： WATANABE, Yusuke , TANAKA, Takanori , HASEGAWA, Takashi , YAMAUCHI, Takashi , MATSUI, Akitoshi , HARADA, Akifumi , UEHARA, Hirohide
IPC分类号： B22D7/12 , B22D11/106
摘要： There are provided a method for casting molten steel, a method for producing a continuously cast piece, and a method for producing a steel material for a bearing, that can suppress a gas-liquid reaction between molten steel and oxygen in the air. A method for casting molten steel using a continuous casting facility includes: a replacement step of blowing a replacement gas containing at least a combustible gas into a tundish (1) under an incomplete combustion condition to replace a gas in the tundish (1), the tundish (1) being an intermediate vessel in the continuous casting facility; and after the replacement step, a casting step of stopping blowing the replacement gas and performing continuous casting in the continuous casting facility by using the tundish (1) without blowing the replacement gas into the tundish (1).

13. 发明公开

EP3239308A1 METHOD FOR RECLAIMING IRON AND PHOSPHORUS FROM STEELMAKING SLAG 审中-公开
标题翻译：从炼钢渣中回收铁和磷的方法
公开(公告)号：EP3239308A1
公开(公告)日：2017-11-01
申请号：EP17171814.1
申请日：2009-12-22
申请人： JFE STEEL CORPORATION
发明人： KIKUCHI, Naoki , MATSUI, Akitoshi , TAKAHASHI, Katsunori , TOBO, Hiroyuki , KISHIMOTO, Yasuo
IPC分类号： C21C5/28 , C04B5/06 , C21C1/02 , C22B1/16
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.
摘要翻译：本发明提供了一种从炼钢炉渣中回收（收集）铁和磷的方法，该方法包括第一步骤，其中使用包含例如碳，Si或Al的还原剂还原脱磷炉渣等含磷炼钢炉渣以还原铁氧化物和氧化磷，并将其作为含磷铁水回收;第二步，其中已经除去了氧化铁和氧化磷的炼钢炉渣用作烧结步骤中的CaO源，将所得到的烧结矿再循环至高炉;第三步，将通过还原回收的含磷铁水脱磷至磷含铁水中的磷浓度不超过0.1质量％，从而使磷浓缩在含有CaO的助熔剂中，以及第四步骤，其中将含磷铁水脱磷至磷浓度为不超过0.1质量％作为铁源与高炉铁水混合。因此该方法能够廉价地从炼钢渣中回收磷和铁，并且回收的磷和铁被有效地用作资源。

14. 发明公开

EP2383352A1 METHOD FOR RECLAIMING IRON AND PHOSPHORUS FROM STEELMAKING SLAG 有权
标题翻译： VERFAHREN ZURRÜCKGEWINNUNGVON EISEN UND PHOSPHOR AUS STAHLWERKSSCHLACKE
公开(公告)号：EP2383352A1
公开(公告)日：2011-11-02
申请号：EP09835099.4
申请日：2009-12-22
申请人： JFE Steel Corporation
发明人： KIKUCHI, Naoki , MATSUI, Akitoshi , TAKAHASHI, Katsunori , TOBO, Hiroyuki , KISHIMOTO, Yasuo
IPC分类号： C21C5/28 , C04B5/06 , C21C1/02 , C22B1/16
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.
摘要翻译：本发明提供了一种从钢铁渣中回收（收集）铁和磷的方法，其中包括第一步，其中使用含有例如碳，Si或Al的还原剂还原含磷钢渣如脱磷渣，以还原铁在炉渣中的氧化物和氧化磷，并将其回收为含磷铁水，在烧结步骤中，将除去了氧化铁和氧化磷的炼钢炉渣作为CaO源的第二工序，将得到的烧结矿再循环至高炉，第3工序中，将通过还原反应回收的含磷铁水脱磷至含磷铁水中的磷浓度为0.1质量％以下，磷为浓缩在含CaO的助熔剂中，第四步是将含磷铁水脱磷至磷浓度不高于0.1质量％的铁矿源与高炉铁水混合。因此，该方法能够从钢铁炉渣中廉价地回收磷和铁，并且所回收的磷和铁被有效地用作资源。

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