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1. 发明申请

WO2012094705A1 METHOD OF DESULFURIZING STEEL 审中-公开
标题翻译：钢的脱硫方法
公开(公告)号：WO2012094705A1
公开(公告)日：2012-07-19
申请号：PCT/AU2012/000019
申请日：2012-01-12
申请人： BLUESCOPE STEEL LIMITED , IHI CORPORATION , NUCOR CORPORATION , PANDA, Dhiren , ROSS, Neal , MCQUILLIS, Gary , JENKINS, Jerome
发明人： PANDA, Dhiren , ROSS, Neal , MCQUILLIS, Gary , JENKINS, Jerome
IPC分类号： C21C7/064
CPC分类号： C21C7/06 , C21C5/54 , C21C7/0645 , C21C7/076 , C21C7/10 , C21C2300/08 , Y02P10/216 , Y02P10/242
摘要： A method of desulfurizing steel including steps of forming a slag over a molten steel, drawing a vacuum to less than 5 torr over the slag and molten steel, stirring the molten steel and slag, and deoxidizing and desulfurizing the molten steel and slag to degas the steel reducing at least sulfur, nitrogen, oxygen, and hydrogen contents, and reducing activity of oxygen in the molten metal to less than 30 ppm. The method includes forming a slag composition after degassing the steel comprising CaO between 50 and 70% by weight, Si0 2 between 20 and 28% by weight, CaF 2 between 5 and 15% by weight, MgO not more than 8% by weight, AI 2 O 3 not more than 1% by weight, and a combination of FeO + MnO not more than 2% by weight, where the sum of CaO +CaF 2 + Si0 2 + MgO is at least 85% by weight.
摘要翻译：一种钢的脱硫方法，包括在钢水上形成炉渣的步骤，在炉渣和钢水上抽真空至小于5乇，搅拌钢水和炉渣，并使钢水和炉渣脱气脱硫钢至少还原硫，氮，氧和氢含量，并将熔融金属中氧的活性降低到30ppm以下。该方法包括在对包含CaO在50至70重量％之间的SiO 2进行脱气之后形成炉渣组合物，SiO 2为20至28重量％，CaF 2为5至15重量％，MgO不大于8重量％，Al 2 O 3为大于1重量％，以及不大于2重量％的FeO + MnO的组合，其中CaO + CaF 2 + SiO 2 + MgO的总和为至少85重量％。

2. 发明申请

WO2011156858A1 LOW COST MAKING OF A LOW CARBON, LOW SULFUR, AND LOW NITROGEN STEEL USING CONVENTIONAL STEELMAKING EQUIPMENT 审中-公开
标题翻译：使用传统钢铁设备的低碳，低硫和低氮钢的低成本
公开(公告)号：WO2011156858A1
公开(公告)日：2011-12-22
申请号：PCT/AU2011/000722
申请日：2011-06-15
申请人： BLUESCOPE STEEL LIMITED , IHI CORPORATION , NUCOR CORPORATION , McQUILLIS, Gary , JENKINS, Jerome , ROSS, Neal , PANDA, Dhiren , SOSINSKY, David J.
发明人： McQUILLIS, Gary , JENKINS, Jerome , ROSS, Neal , PANDA, Dhiren , SOSINSKY, David J.
IPC分类号： C21C5/52 , C21C7/064 , C22C38/00 , B22D27/00 , C21C7/068 , C21C7/06 , C21C7/10
CPC分类号： C21C5/54 , C21C7/0006 , C21C7/0043 , C21C7/0075 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/072 , C21C7/076 , C21C7/10 , C21C2250/08 , C21C2300/08 , C22C33/04 , Y02P10/216 , Y02P10/242
摘要： A method of making a steel with low carbon less than 0.035% by weight including steps of preparing a heat of molten steel composition in a steelmaking furnace to a tapping temperature as desired for desulfurization at a VTD, tapping open into a ladle the molten steel composition with an oxygen level between about 600 and 1120 ppm, providing slag forming compound to the ladle to form a slag cover over the molten steel composition in the ladle, transporting the molten steel to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, transporting the molten steel to an LMF and deoxidizing the molten steel composition, after deoxidizing, returning to the VTD to desulfurize and degas the molten steel composition, and casting the molten steel composition to form a steel with low carbon less than 0.035% by weight.
摘要翻译：一种制造低于0.035重量％的低碳钢的方法，包括在炼钢炉中制备钢水组合物的热量到在VTD下脱硫所需的出钢温度的步骤，将钢水组合物开放入钢包氧浓度在约600和1120ppm之间，向钢包提供炉渣形成化合物，以在钢包中的钢水组合物上形成炉渣盖，将钢水输送到VTD，通过拉伸对VTD上的钢水组合物进行脱碳真空度小于650毫巴，脱碳后，将钢水输送到LMF，脱气后，返回到VTD，使钢水组合物脱硫脱气，铸造钢水组合物小于0.035重量％的低碳钢。

3. 发明公开

EP2663662A1 METHOD OF DESULFURIZING STEEL 有权
标题翻译：钢的脱硫方法
公开(公告)号：EP2663662A1
公开(公告)日：2013-11-20
申请号：EP12734204.6
申请日：2012-01-12
申请人： Nucor Corporation
发明人： PANDA, Dhiren , ROSS, Neal , MCQUILLIS, Gary , JENKINS, Jerome
IPC分类号： C21C7/064
CPC分类号： C21C7/06 , C21C5/54 , C21C7/0645 , C21C7/076 , C21C7/10 , C21C2300/08 , Y02P10/216 , Y02P10/242
摘要： A method of desulfurizing steel including steps of forming a slag over a molten metal, drawing a vacuum to less than 5 torr over the slag and molten metal, stirring the molten metal and slag, and deoxidizing and desulfurizing the molten metal and slag to degas the steel reducing at least sulfur, nitrogen, oxygen, and hydrogen contents, and reducing activity of oxygen in the molten metal to less than 30 ppm. The method includes forming a slag composition after degassing the steel comprising CaO between about 50 and 70% by weight, SiO2 between about 20 and 28% by weight, CaF2 between about 5 and 15% by weight, MgO not more than 8% by weight, Al2O3 not more than 1% by weight, and a combination of FeO+MnO not more than 2% by weight, where the sum of CaO+CaF2+SiO2+MgO is at least 85% by weight.
摘要翻译：一种钢的脱硫方法，包括在熔融金属上形成炉渣，在炉渣和熔融金属上抽真空至小于5乇，搅拌熔融金属和炉渣，以及使熔融金属和炉渣脱氧和脱硫以脱除钢至少减少硫，氮，氧和氢的含量，并且使熔融金属中的氧的活性降低至小于30ppm。该方法包括在将包含约50-70重量％的CaO，约20-28重量％的SiO 2，约5-15重量％的CaF 2，不超过8重量％的MgO的钢脱气后形成炉渣组合物，Al 2 O 3不超过1重量％，以及FeO + MnO不超过2重量％的组合，其中CaO + CaF 2 + SiO 2 + MgO的总和至少为85重量％。

4. 发明授权

EP2663662B1 METHOD OF DESULFURIZING STEEL 有权
公开(公告)号：EP2663662B1
公开(公告)日：2019-03-06
申请号：EP12734204.6
申请日：2012-01-12
申请人： Nucor Corporation
发明人： PANDA, Dhiren , ROSS, Neal , MCQUILLIS, Gary , JENKINS, Jerome
IPC分类号： C21C7/064 , C21C7/10 , C21C5/54 , C21C7/076 , C21C7/06

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