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1. 发明专利

JP2000327403A REFRACTORY FOR BOTTOM BLOWING TUYERE OF STEEL MAKING CONVERTER 失效
公开(公告)号：JP2000327403A
公开(公告)日：2000-11-28
申请号：JP14212699
申请日：1999-05-21
申请人： NIPPON STEEL CORP , KUROSAKI HARIMA CORP
发明人： SAITO YOSHITOSHI , KONO KOJI , SAKAMOTO HIROSHI , INUZUKA TAKAYUKI , NAKAMURA HISASHI , KASAHARA HAJIME , NAKAHO MASATERU , MATSUI TAKESHI , SURUGA TOSHIHIRO
IPC分类号： C04B35/043 , C21C5/48
摘要： PROBLEM TO BE SOLVED: To obtain refractory having dense structure in the whole temp. region of the use environment and high in strength and excellent in slag erosion resistance by forming a blended material containing resin coated magnesia particles, magnesia particles and carbon. SOLUTION: It is preferable that the magnesia particle is added at need to improve the strength and the content is desirably 20-75 wt.%. The content of the carbon is 3-40 wt.%, to which 0.5-10 wt.% metal and 0.2-5 wt.% compound containing boron per carbon are preferably added. As the resin to be applied, novolak and a resol type phenolic resin are used and the resin is applied by kneading the magnesia particle with the resin to be applied. The size of the magnesia particle of the resin coated magnesia particle is 1-10 mm, the quantity of the fixed carbon in the resin to be applied is 15-50 wt.% and the quantity of the resin is preferably 0.5-2 wt.% per 100 pts.wt. magnesia particle. The change of strength and elastic modulus in the environment, where rapid heating- quenching is repeated, is remarkably reduced.

2. 发明专利

JPH0987724A STRUCTURE FOR PREVENTING FALL-DOWN OF BRICK FOR INCLINED PART OF CONVERTER 失效
公开(公告)号：JPH0987724A
公开(公告)日：1997-03-31
申请号：JP27204495
申请日：1995-09-27
申请人： NIPPON STEEL CORP
发明人： MATSUMURA YASUNARI , OKANAKA YOSHITSUGU , NAKAMURA HISASHI
IPC分类号： F27D1/14 , C21C5/44
摘要： PROBLEM TO BE SOLVED: To prevent the fall-down of lining refractory by applying monolithic refractory in the gap arranged between a furnace shell and the lining refractory in the inclined part of a converter and relaxing the inclined angle between the monolithic refractory and the refractory brick to a specific range. SOLUTION: In the inclined part of the converter, the gap is arranged between the furnace shell 2 and the lining brick 4, and monolithic refractory 6 is applied into this gap. By this constitution, the inclining angle (b) constructing the refractory brick 4 is made larger than the inclining angle (a) of the furnace shell 2 and is made to 60-80 deg. angle to the horizontal direction. The inclining angle (b), the frequency of fall-down of the refractory brick is drastically reduced. In the inclining angle (b) is formed larger, the fall-down of the refractory brick 4 is easily prevented, but if the inclining angle (b) is formed larger, the gap arranged between the furnace shell 2 and the refractory brick 4 becomes smaller and stud 5 is difficult to set. Therefore, the sticking strength between the furnace shell 2 and the monolithic refractory 6 becomes smaller, and the fall-down between both material is developed, the upper limit of the inclining angle (b) is made to 80 deg..

3. 发明专利

JPH07291712A CARBON CONTAINING REFRACTORY 失效
公开(公告)号：JPH07291712A
公开(公告)日：1995-11-07
申请号：JP10622794
申请日：1994-04-22
申请人： NIPPON STEEL CORP
发明人： NAKAO ATSUSHI , NAKAMURA HISASHI , SUZUKI TOSHIYUKI
IPC分类号： C04B35/00 , F27D1/00
摘要： PURPOSE:To produce a low heat conductive carbon containing refractory by adding a glass and a metal powder in a specific ratio into a blended material of refractory materials, a specific carbon and SiC, mixing, molding, drying and hardening. CONSTITUTION:The blended material is obtained by blending 55-96wt.% (hereinafter %) refractory such as a sintered Al2O3 having >=90% purity, 3-30% carbon composed of 5-50% carbon powder

4. 发明专利

JPH07257981A JOINED BODY OF CARBON-CONTAINING REFRACTORY AND PRODUCTION THEREOF 失效
公开(公告)号：JPH07257981A
公开(公告)日：1995-10-09
申请号：JP7129594
申请日：1994-03-17
申请人： NIPPON STEEL CORP
发明人： NAKAMURA HISASHI , TAIRA HATSUO , NAKAO ATSUSHI , SUZUKI TOSHIYUKI
IPC分类号： C04B37/00
摘要： PURPOSE:To produce a joined body of carbon-contg. refractories having high bonding strength without considerably impairing corrosion resistance at the joined parts. CONSTITUTION:One or more among Ti, Zr, Hf, Nb, V, Ta, Al, B and Si are held between carbon-contg. refractories to be joined. A nitriding reaction is initiated by heating one end in a nitrogen atmosphere, nitrides are gradually formed by heat generated by the nitriding reaction and the objective joined body of the carbon-contg. refractories is produced using the nitrides as a binder. This joined body is produced using carbides of one or more among Ti, Zr, Hf, Nb, V, Ta and Si as a binder.

5. 发明专利

JPH0782003A CARBON-CONTAINING REFRACTORY 失效
公开(公告)号：JPH0782003A
公开(公告)日：1995-03-28
申请号：JP17855493
申请日：1993-06-28
申请人： NIPPON STEEL CORP
发明人： MATSUI TAKESHI , TAIRA HATSUO , NAKAMURA HISASHI , NAKAO ATSUSHI
IPC分类号： B22D41/02 , B22F5/00 , C04B35/043 , F27D1/00
摘要： PURPOSE:To obtain a carbon-containing refractory having excellent hot strength without reducing thermal shock resistance by adding an improved pitch as a binder to a refractory raw material composed of carbon and magnasia, kneading, molding and burning. CONSTITUTION:A solution obtained by dissolving 2-15wt.% of an improved pitch in a heterocyclic compound (e.g. quinoline) is added to 100wt.% of a refractory raw material composed of 5-30wt.% of carbon and 70-95wt.% of magnesia. Then, the mixture is kneaded, molded and burnt in a nonoxidizing atmosphere at >=500 deg.C. The composition can further be mixed with 0.5-3wt.% Al or an Al alloy based on 100wt.% of the refractory raw material. Consequently, oxidation resistance and strength of carbon-containing refractory can be bettered.

6. 发明专利

JPH05217734A LOW-LOSS MANGANESE ZINC FERRITE AND ITS PRODUCTION 失效
公开(公告)号：JPH05217734A
公开(公告)日：1993-08-27
申请号：JP2285792
申请日：1992-02-07
申请人： NIPPON STEEL CORP
发明人： NAKAMURA HISASHI , IKEMOTO TADASHI , KAYAMA TSUNEO
IPC分类号： C01G49/00 , C04B35/38 , H01F1/34
摘要： PURPOSE:To provide a low magnetic-core loss ferrite consisting essentially of iron, manganese and zinc, and its production method. CONSTITUTION:In order to obtain the title ferrite, its sintering conditions are as follows: sintering temperature is 1200-1280 deg.C; oxigen concentration is set to less than 1% in the atmosphere for early 10-30min at more than 600 deg.C during temperature rising and sintering temperature. Cooling is performed at a specified oxigen concentration after sintering. Thus, the low-loss manganese zinc ferrite in which average crystal grain dia. is less than 10mum and its theoretical density is more than 94% can be produced.

7. 发明专利

JP2012082495A Method for heating agglomerates 有权
标题翻译：加热助剂的方法
公开(公告)号：JP2012082495A
公开(公告)日：2012-04-26
申请号：JP2010231516
申请日：2010-10-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SUGIBASHI ATSUSHI , TAIRA HATSUO , ONUKI KAZUO , HARADA HIROSHI , AOKI RIICHI , NAKAMURA HISASHI
IPC分类号： C21B13/10 , C22B1/16 , C22B1/24 , C22B5/10
摘要： PROBLEM TO BE SOLVED: To provide a method for heating agglomerates, capable of further reducing uneven heating of the agglomerates while suppressing increase in device cost and operation cost.SOLUTION: The method for heating agglomerates for heating agglomerates molded by mixing iron oxide raw material and a reductant in a solid reduction furnace includes: a radiation heating step of heating the agglomerates charged in the solid reduction furnace by the radiation heat of a burner provided in the solid reduction furnace; and a microwave heating step of heating the agglomerates at a position where the agglomerates reach a predetermined temperature inside the solid reduction furnace by irradiating the agglomerates with microwaves having a specific microwave output for a specific irradiation time by a microwave oscillation device provided in the solid reduction furnace.
摘要翻译：要解决的问题：提供一种加热附聚物的方法，能够进一步减少凝聚体的不均匀加热，同时抑制装置成本和操作成本的增加。解决方案：用于加热用于加热通过在固体还原炉中混合氧化铁原料和还原剂而成型的附聚物的附聚物的方法包括：辐射加热步骤，通过辐射加热固体还原炉中的附聚物，设置在固体还原炉中的燃烧器; 以及微波加热步骤，通过在固相还原炉中设置的微波振荡装置，通过用特定的微波输出的微波照射附聚物，在凝固体在固体还原炉内部达到规定温度的位置加热附聚物炉。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2010196148A Iron raw material and manufacturing method therefor 审中-公开
标题翻译：铁原料及其制造方法
公开(公告)号：JP2010196148A
公开(公告)日：2010-09-09
申请号：JP2009045652
申请日：2009-02-27
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SATO TAKENORI , NAGAI WATARU , NAKAMURA HISASHI
IPC分类号： C21B13/10 , C21C5/28 , C21C5/36 , C21C5/54 , C22B1/16 , C22B1/242
CPC分类号： Y02P10/216
摘要： PROBLEM TO BE SOLVED: To efficiently restrain the wear of MgO-series refractory lined on a melting furnace. SOLUTION: An iron raw material for charging into the melting furnace is contained multiple oxide composed of MgO-FeO, and the melting point of this multiple oxide composed of MgO-FeO is lower compared with MgO alone. Therefore, this melting speed of MgO into slag can be made large compared with a case where MgO is added alone. Further, even in the case of directly charging the iron raw material from the upper part of the melting furnace without using a lance, the iron raw material is surely reached into the slag without flowing out to waste gas-recovering side. Therefore the wear of the MgO-series refractory lined on the melting furnace can further effectively be restrained. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：有效地抑制在熔炉上衬里的MgO系耐火材料的磨损。解决方案：用于装入熔炉的铁原料含有由MgO-FeO组成的多重氧化物，由MgO-FeO组成的多重氧化物的熔点比单独的MgO低。因此，与单独添加MgO的情况相比，可以使MgO向熔渣中的熔融速度变大。此外，即使在不使用喷枪的情况下从熔融炉的上部直接对铁原料进行充填的情况下，铁原料可靠地进入炉渣而不流出到废气回收侧。因此，能够进一步有效地抑制在熔融炉上排列的MgO系耐火材料的磨损。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2005194110A Alumina-magnesia monolithic refractory for microwave drying and its application method 有权
$Alumina-magnesia monolithic refractory for microwave drying and its application method$
标题翻译：用于微波干燥的ALUMINA-MAGNESIA单晶耐火材料及其应用方法
公开(公告)号：JP2005194110A
公开(公告)日：2005-07-21
申请号：JP2003435430
申请日：2003-12-26
申请人： Kurosaki Harima Corp , Nippon Steel Corp , 新日本製鐵株式会社 , 黒崎播磨株式会社
发明人： ITOSE SHIYOUICHI , TAIRA HATSUO , NAKAMURA HISASHI
IPC分类号： C04B35/66 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To provide a monolithic refractory which is dried highly efficiently by microwave drying, has corrosion resistance inherent in an alumina-magnesia material, and hence is very effective in improving the furnace operation rate by application time shortening/lining life extension and the like, reducing standard physical units of refractory, and decreasing the number of times of repairing a lining, and so on. SOLUTION: The alumina-magnesia monolithic refractory for microwave drying is dried by the irradiation with a microwave after slip casting application and contains a refractory material mainly comprising a magnesia raw material and an alumina raw material, a binder, and a dispersant. As a coarse grain section of the alumina material, electrofused alumina containing 2-5 mass% TiO 2 in terms of a chemical component value is used. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供通过微波干燥高效干燥的整体耐火材料，具有氧化铝 - 氧化镁材料中固有的耐腐蚀性，因此通过施加时间缩短/内衬提高炉的操作速度非常有效寿命延长等，减少耐火材料的标准物理单位，减少修理衬里的次数等。解决方案：用于微波干燥的氧化铝 - 氧化镁整体耐火材料在滑移浇铸后通过微波照射被干燥，并且包含主要包含氧化镁原料和氧化铝原料，粘合剂和分散剂的耐火材料。作为氧化铝材料的粗颗粒部分，使用以化学成分值计含有2-5质量％TiO 2 SB SB2的电铸氧化铝。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2003252686A REFRACTORY 审中-公开
公开(公告)号：JP2003252686A
公开(公告)日：2003-09-10
申请号：JP2002374340
申请日：2002-12-25
申请人： NIPPON STEEL CORP , KUROSAKI HARIMA CORP
发明人： GOTO KIYOSHI , NAKAMURA HISASHI , YAMADA YASUHIRO , TAKI TOKUO , ITOSE SHIYOUICHI
IPC分类号： C04B35/66
摘要： PROBLEM TO BE SOLVED: To provide refractories such as cast material that is excellent in corrosion resistance and generates less cracking, having a long service life. SOLUTION: The refractories comprise a CaO content of 0.5% by mass or less, a total amount of lactic acid and glycolic acid of 0.005-1% by mass and the remainder of Al 2 O 3 , SiO 2 , MgO and carbon. The refractories is a formulation of 3-15% by mass of an alumina super fine powder having an average particle size of 1.5 μm or less, 0.01-2% by mass of aluminum lactate or glycolic acid/aluminum lactate and 0.01-3% by mass of a lightly calcined magnesia having an iodine absorption amount of 20 iodine mg/g or more and an average particle size of 1 μm or less. COPYRIGHT: (C)2003,JPO

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