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1. 发明申请

US20170226602A1 METHOD FOR CONTROLLING Ti CONCENTRATION IN STEEL, AND METHOD FOR PRODUCING SILICON-DEOXIDIZED STEEL 审中-公开
公开(公告)号：US20170226602A1
公开(公告)日：2017-08-10
申请号：US15502220
申请日：2015-08-17
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
发明人： Sei KIMURA , Masaki SHIMAMOTO , Akihiro OWAKI , Yosuke SHINDO , Tomoko SUGIMURA
IPC分类号： C21C7/00 , C21C7/06
CPC分类号： C21C7/0087 , C21C5/36 , C21C5/54 , C21C7/06 , C21C7/0645 , C21C7/076 , C22C33/006 , C22C33/04 , C22C38/02 , C22C38/06 , C22C38/14 , Y02P10/216 , Y02P10/242
摘要： Disclosed is a method for controlling a Ti concentration in a steel when manufacturing a silicon-deoxidized steel comprising 0.1 to 3% by mass of Si and 0.0001 to 0.005% by mass of Al by ladle refining of a molten steel, the method including the step of: adding an oxide including TiO2 to a slag in a ladle during the ladle refining, wherein the slag produced at end of the ladle refining satisfies formulas (1) to (7) below: 0.5≦CaO/SiO2≦1.8 (1) 4% by mass≦Al2O3≦20% by mass (2) MgO≦15% by mass (3) 1.5% by mass≦TiO2≦10% by mass (4) CaO+SiO2+Al2O3+MgO+TiO2≧90% by mass (5) 0.4≦TiO2/MnO≦5 (6) 1≦TiO2/T.Fe≦10 (7) where a compound represented by a chemical formula represents the content of the compound in percent by mass; and T.Fe represents the total concentration, in mass ratio, of Fe contained in Fe oxides in the slag.

2. 发明授权

US09382595B2 Method for the production and the purification of molten calcium aluminate using contaminated aluminum dross residue 有权
标题翻译：使用污染的铝渣渣生产和纯化熔融的铝酸钙的方法
公开(公告)号：US09382595B2
公开(公告)日：2016-07-05
申请号：US14177305
申请日：2014-02-11
申请人： 9255-8444 QUEBEC INC.
发明人： Ghyslain Dubé
IPC分类号： C01B33/24 , C21C7/04 , C21C1/06 , C21C7/00 , C22B7/04 , C21C1/02 , C21C7/064 , C21C7/076
CPC分类号： C21C7/00 , C21C1/025 , C21C7/0075 , C21C7/0087 , C21C7/0645 , C21C7/076 , C22B7/04 , Y02P10/218 , Y02P10/242
摘要： The present invention provides a process for the preparation of pre-melted calcium aluminate for iron and steel treatment and protection by the fusion of aluminum dross residues, usually referred to as non-metallic products (NMP) containing variable levels of aluminum (Al) and aluminum nitride (AlN) with calcium carbonate at high temperature, under oxidizing atmosphere. It further relates to the purification of the molten calcium aluminate from some contaminants present in the dross residue.
摘要翻译：本发明提供了一种制备用于钢铁处理和预处理的铝酸钙的方法，该方法通过熔融铝熔渣渣（通常被称为含有可变水平的铝（Al）的非金属产物（NMP））和氮化铝（AlN）与碳酸钙在高温下，在氧化气氛下。它还涉及从浮渣残渣中存在的一些污染物中纯化熔融的铝酸钙。

3. 发明授权

US09234252B2 Method for controlling A-shaped segregation by purification of liquid steel 有权
标题翻译：通过液态钢净化控制A型偏析的方法
公开(公告)号：US09234252B2
公开(公告)日：2016-01-12
申请号：US14105167
申请日：2013-12-12
申请人： INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES
发明人： Dianzhong Li , Paixian Fu , Hongwei Liu , Lijun Xia , Yiyi Li
IPC分类号： C21C7/10 , C21C7/064 , C21C7/06 , C21C7/076 , C21C7/00 , C22C38/22 , C22C38/40
CPC分类号： C21C7/064 , C21C7/0075 , C21C7/06 , C21C7/0645 , C21C7/076 , C21C7/10 , C22C38/22 , C22C38/40 , Y02P10/242
摘要： A method for controlling A-shaped segregation of steel ingot. The method includes: 1) controlling a content of phosphorus in liquid steel at less than or equal to 0.005 wt. % upon tapping from an electric furnace, preventing steel slag from entering a ladle, controlling content of harmful elements at less than or equal to 100 ppm; and adding between 3 and 15 kg of calcium oxide and less than or equal to 0.5 kg of aluminum to each ton of the liquid steel; 2) pre-deoxidizing the liquid metal using vacuum carbon deoxidation; 3) de-sulfurizing, controlling content of oxygen, and controlling the content of sulfur in the liquid steel at less than or equal to 0.005 wt. %; and 4) performing vacuum degasification, controlling the total oxygen content at less than or equal to 15 ppm; and casting the steel in the presence of inert gas or in vacuum.
摘要翻译：控制钢锭A型偏析的方法。该方法包括：1）控制钢液中的磷含量小于或等于0.005wt。从电炉出来，防止钢渣进入钢包，控制有害元素的含量小于或等于100ppm; 并向每吨液态钢中加入3至15kg的氧化钙和少于或等于0.5kg的铝; 2）使用真空碳脱氧对液态金属进行预脱氧; 3）脱硫，控制氧含量，控制钢液中硫的含量小于或等于0.005wt。％; 和4）进行真空脱气，控制总氧含量小于或等于15ppm; 并在惰性气体存在下或在真空中铸造钢。

4. 发明授权

US08753419B2 Method for treatment of chrome-containing molten iron and slag 有权
标题翻译：含铬铁水和渣的处理方法
公开(公告)号：US08753419B2
公开(公告)日：2014-06-17
申请号：US13583844
申请日：2010-12-08
申请人： Takahiro Yoshino , Masakazu Mori
发明人： Takahiro Yoshino , Masakazu Mori
IPC分类号： C21C5/54 , C21C7/064
CPC分类号： C21C1/025 , C21C5/5264 , C21C5/54 , C21C7/076 , F27D27/00 , Y02P10/216 , Y02P10/242
摘要： Chrome-containing molten iron and slag are to be obtained in an electric furnace operation using CaF2-free slag. In order to reduce and collect chrome from the slag while simultaneously promoting desulfurization of molten iron, a chrome-containing molten iron produced in an electric furnace and having a Cr content of from 8.0 to 35.0% by mass, and a CaF2-free electric furnace slag formed during the molten iron production, including Cr2O3, SiO2 and CaO as the constituent components and having a basicity CaO/SiO2 of from 0.7 to 1.7, are mechanically stirred with an impeller in a refining vessel. A metal Al-containing substance and CaO are put into the vessel before the end of stirring to thereby control the basicity of the slag after the end of stirring to at least 1.9
摘要翻译：含铬的铁水和炉渣应使用无CaF2的炉渣在电炉操作中获得。为了从炉渣中还原并收集铬，同时促进铁水的脱硫，在电炉中制造的Cr含量为8.0〜35.0质量％的含铬铁水，以及不含CaF2的电炉在精炼容器中与叶轮机械搅拌在铁水生产期间形成的炉渣，其中包括Cr 2 O 3，SiO 2和CaO作为构成成分，碱度CaO / SiO 2为0.7〜1.7。在搅拌结束之前将含有金属的Al的物质和CaO放入容器中，从而将搅拌结束后的渣的碱度控制在至少1.9

5. 发明申请

US20140096648A1 METHOD FOR CONTROLLING A-SHAPED SEGREGATION BY PURIFICATION OF LIQUID STEEL 有权
标题翻译：用于通过液体钢的净化来控制形状分离的方法
公开(公告)号：US20140096648A1
公开(公告)日：2014-04-10
申请号：US14105167
申请日：2013-12-12
申请人： INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES
发明人： Dianzhong LI , Paixian FU , Hongwei LIU , Lijun XIA , Yiyi LI
IPC分类号： C21C7/064 , C21C7/06
CPC分类号： C21C7/064 , C21C7/0075 , C21C7/06 , C21C7/0645 , C21C7/076 , C21C7/10 , C22C38/22 , C22C38/40 , Y02P10/242
摘要： A method for controlling A-shaped segregation of steel ingot. The method includes: 1) controlling a content of phosphorus in liquid steel at less than or equal to 0.005 wt. % upon tapping from an electric furnace, preventing steel slag from entering a ladle, controlling content of harmful elements at less than or equal to 100 ppm; and adding between 3 and 15 kg of calcium oxide and less than or equal to 0.5 kg of aluminum to each ton of the liquid steel; 2) pre-deoxidizing the liquid metal using vacuum carbon deoxidation; 3) de-sulfurizing, controlling content of oxygen, and controlling the content of sulfur in the liquid steel at less than or equal to 0.005 wt. %; and 4) performing vacuum degasification, controlling the total oxygen content at less than or equal to 15 ppm; and casting the steel in the presence of inert gas or in vacuum.
摘要翻译：控制钢锭A型偏析的方法。该方法包括：1）控制钢液中的磷含量小于或等于0.005wt。从电炉出来，防止钢渣进入钢包，控制有害元素的含量小于或等于100ppm; 并向每吨液态钢中加入3至15kg的氧化钙和少于或等于0.5kg的铝; 2）使用真空碳脱氧对液态金属进行预脱氧; 3）脱硫，控制氧含量，控制钢液中硫的含量小于或等于0.005wt。％; 和4）进行真空脱气，控制总氧含量小于或等于15ppm; 并在惰性气体存在下或在真空中铸造钢。

6. 发明授权

US08523977B2 Method of desulfurizing steel 有权
标题翻译：钢脱硫方法
公开(公告)号：US08523977B2
公开(公告)日：2013-09-03
申请号：US13106352
申请日：2011-05-12
申请人： Dhiren Panda , Neal Ross , Gary McQuillis , Jerome Jenkins
发明人： Dhiren Panda , Neal Ross , Gary McQuillis , Jerome Jenkins
IPC分类号： C21C5/36 , C21C7/10
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：一种脱硫钢的方法，包括在熔融金属上形成炉渣的步骤，在炉渣和熔融金属上抽真空至小于5托，搅拌熔融金属和炉渣，以及使熔融金属和炉渣脱气脱硫脱气钢至少还原硫，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约50-70重量％的CaO，约20-28重量％之间的SiO 2，约5-15重量％的CaF 2和不超过8重量％的MgO进行脱气之后，，Al 2 O 3不超过1重量％，FeO + MnO的组合不超过2重量％，其中CaO + CaF 2 + SiO 2 + MgO的总和至少为85重量％。

7. 发明授权

US08313553B2 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment 有权
标题翻译：使用传统炼钢设备低成本制造低碳，低硫和低氮钢
公开(公告)号：US08313553B2
公开(公告)日：2012-11-20
申请号：US12414047
申请日：2009-03-30
申请人： Jacobus Marthinus Andreas Geldenhuis , David John Sosinsky , Daniel Gene Murray , David Wayne McGaughey , Eugene B. Pretorius
发明人： Jacobus Marthinus Andreas Geldenhuis , David John Sosinsky , Daniel Gene Murray , David Wayne McGaughey , Eugene B. Pretorius
IPC分类号： C21C7/10 , C21C7/064 , C21C7/068
CPC分类号： C21C7/06 , C21C5/54 , C21C7/0006 , C21C7/0043 , C21C7/0075 , C21C7/064 , C21C7/068 , C21C7/072 , C21C7/076 , C21C7/10 , C21C2250/08 , 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 composition in the ladle to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, adding one or more deoxidizers to the molten steel composition and deoxidizing the molten steel composition, after deoxidizing, adding one or more flux compounds to desulfurize 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VTD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，将钢包中的钢水组合物输送到VTD中，使钢水组合物脱碳 VTD通过抽出低于650毫巴的真空，脱碳后，向钢水组合物中加入一种或多种脱氧剂，并对钢水组合物进行脱氧，脱氧后，加入一种或多种助熔剂以使钢水组合物脱硫，以及铸造该钢水组合物形成低于0.035重量％的低碳钢。

8. 发明授权

US08105415B2 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment 有权
标题翻译：使用传统炼钢设备低成本制造低碳，低硫和低氮钢
公开(公告)号：US08105415B2
公开(公告)日：2012-01-31
申请号：US12818619
申请日：2010-06-18
申请人： Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
发明人： Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
IPC分类号： C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , 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VTD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。

9. 发明申请

US20110265608A1 PROCESS FOR PRODUCTION OF ULTRA LOW PHOSPHOROUS AND CARBON FERROMANGANESE BY USING OF FERROMANGANESE SLAG 有权
标题翻译：通过使用富马酸钙生产超低磷和碳氟化合物的方法
公开(公告)号：US20110265608A1
公开(公告)日：2011-11-03
申请号：US12937533
申请日：2008-11-19
申请人： Dong-Shik Min , Chan-Soo Park , Young-Eun Lee , Hai-Chang Cho , Kwang-Jung Lee , Sung-Hwan Hong
发明人： Dong-Shik Min , Chan-Soo Park , Young-Eun Lee , Hai-Chang Cho , Kwang-Jung Lee , Sung-Hwan Hong
IPC分类号： C22B47/00 , C22B1/00
CPC分类号： C22B9/106 , C21C5/5264 , C21C5/54 , C21C7/0645 , C21C7/068 , C21C7/076 , C22B7/04 , C22B47/0036 , C22C22/00 , Y02P10/216 , Y02P10/242
摘要： Disclosed is a method of producing ultra low phosphorus and carbon ferromanganese having 0.1 wt % or less carbon and 0.03 wt % or less phosphorus. The method includes preparing low carbon silicomanganese having low phosphorus content, preparing molten manganese slag, subjecting the molten manganese slag and the low carbon silicomanganese having low phosphorus content to primary mixing and stirring at a ratio of 70˜72:28˜30 in a ladle, thus producing a metal melt and slag, and subjecting the metal melt separated from the above slag and the molten manganese slag identical to that used in the primary mixing and stirring to secondary mixing and stirring, thus producing slag and a metal melt including 91˜93 wt % manganese, 0.60˜0.85 wt % silicon, 0.05˜0.10 wt % carbon and 0.015˜0.02 wt % phosphorus.
摘要翻译：公开了一种生产具有0.1重量％或更少的碳和0.03重量％或更少的磷的超低磷和碳锰铁的方法。该方法包括制备低磷含量的低碳硅锰矿，制备熔融锰渣，使熔融锰渣和低磷含量的低碳硅锰矿以70〜72：28〜30的比例进行一次混合搅拌，从而产生金属熔体和炉渣，并将从上述炉渣分离出的金属熔体和与初次混合搅拌相同的熔融锰渣进行二次混合和搅拌，从而产生炉渣和金属熔体，其包括91〜 93重量％的锰，0.60〜0.85重量％的硅，0.05〜0.10重量％的碳和0.015〜0.02重量％的磷。

10. 发明申请

US20110220248A1 POROUS MAGNESIA CLINKER, MANUFACTURING METHOD AND USE THEREOF AS FLUX FOR TREATING STEELMAKING SLAG 审中-公开
标题翻译：多孔MAGNESIA CLINKER，制造方法及其用作处理钢丝滑块的通路
公开(公告)号：US20110220248A1
公开(公告)日：2011-09-15
申请号：US13130181
申请日：2009-11-17
申请人： Sabine Guichard , Herve Fryda , Christoph Wohrmeyer , Remy Jolly , Enrique Elorza
发明人： Sabine Guichard , Herve Fryda , Christoph Wohrmeyer , Remy Jolly , Enrique Elorza
IPC分类号： B23K35/34
CPC分类号： B22D11/111 , C04B7/32 , C21B3/06 , C21B2400/022 , C21C5/36 , C21C5/54 , C21C7/0087 , C21C7/076 , Y02P10/216 , Y02P10/242 , Y02W30/543
摘要： A clinker composition including, relative to the clinker total weight: from 30 to 85% Al2O3; from 3 to 45% CaO; from 9 to 45% MgO and having an apparent porosity, such as measured by means of the apparent porosity underwater measurement assay according to modified NF B40-312 standard ranging from 4% to 60%.
摘要翻译：一种熟料组合物，包括相对于熟料总重量：30至85％的Al2O3; 3〜45％的CaO; 具有9至45％的MgO并且具有表观孔隙率，例如通过根据改进的NF B40-312标准范围为4％至60％的表观孔隙度水下测量测定法测量的。

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