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1. 发明专利

JPH061650A BRICK FOR MOLTEN IRON PRETREATMENT VESSEL 失效
公开(公告)号：JPH061650A
公开(公告)日：1994-01-11
申请号：JP15975792
申请日：1992-06-18
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： KAWASAKI KAZUHIKO , YOSHITOMI TAKENORI , MATSUMOTO YOSHIO , NAGAISHI NAOHITO , NAKAGAWA HITOSHI , KURAYOSHI KAZUMI
IPC分类号： C04B35/00 , C04B35/10
摘要： PURPOSE:To improve the oxidation resistnacs, slag resistance, spalling resistance and low heat conductivity by incorporating anthracter coal containing the sepecifc quantity of fixed carbon and volatile matter as an aggregate. CONSTITUTION:The anthracite coal which is >=90wt.% fixed carbon, =1.62 the apparent sepcific gravity and >=1mm the particle size is obtained by selecting from a carbon source as the aggregate. Then, 3-20wt.% anthacite coal, the alumina souce of an electrode alumina, etc., incorporating >=50wt.% Al2O3 as necessary, and the binder of a phonol resin, etc., for SiC Mg, etc., are kneaded and molded to obtain a molded product. Then, the molded product is subjected to a heat treatment, etc., at the temp.

2. 发明专利

JP2005186280A Precast block manufacturing method 审中-公开
标题翻译：预制块制造方法
公开(公告)号：JP2005186280A
公开(公告)日：2005-07-14
申请号：JP2003426741
申请日：2003-12-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： ISHIBASHI YASUSHI , NAKAGAWA HITOSHI , ARAI MASAYUKI
IPC分类号： C04B35/66 , B28B1/14 , B28B13/02 , F27D1/04 , F27D1/10
摘要： PROBLEM TO BE SOLVED: To provide a precast block capable of being compounded with 30 mass % or above of coarse aggregate with a particle size of 5 mm or above obtained by crushing used refractory and excellent in melt loss resistance and fire resistance, and its manufacturing method. SOLUTION: Monolithic slip-cast refractories 2 containing 30 mass% or more of the coarse aggregate with a particle size of 5 mm or larger obtained by crushing refractories are kneaded in a kneader 3 and the kneaded slip-cast monolithic refractories 2 are allowed to directly fall in a form 4 from the kneader 3 and solidified to manufacture the precast block. In this manufacturing method, a partition plate 8 is preliminarily provided in the form 4 and, after the form is filled with the monolithic refractories 2, the partition plate 8 is removed. The coarse aggregate is obtained by crushing the used refractories and the refractories of equal material quality corresponding to the use of the precast block are selected and used for the coarse aggregate. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够通过粉碎所使用的耐火材料获得的粒径为5mm以上的粗骨料的30质量％以上的耐候性，耐熔损性和耐火性优异的预制块，及其制造方法。解决方案：在捏合机3中捏合含有30质量％以上的粒径为5mm以上的粗骨料的通过粉碎耐火材料制成的整体滑动耐火材料2，并且捏合的铸塑整体耐火材料2为允许从捏合机3直接落入形式4并固化以制造预制块。在该制造方法中，隔板8被预先设置成形式4，并且在形成单体耐火材料2之后，分隔板8被移除。通过粉碎所使用的耐火材料获得粗骨料，并且选择与使用预制块相同的材料质量的耐火材料并将其用于粗骨料。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003292385A Silicon carbide raw material for castable refractory having excellent drying property and corrosion resistance and raw material for the monolithic refractory 有权
$Silicon carbide raw material for castable refractory having excellent drying property and corrosion resistance and raw material for the monolithic refractory$
标题翻译：具有优良干燥性能和耐腐蚀性和耐磨性的原材料用于可燃耐火材料的碳化硅原料
公开(公告)号：JP2003292385A
公开(公告)日：2003-10-15
申请号：JP2002095471
申请日：2002-03-29
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： AIDA KOJI , TAIRA HATSUO , SAITO YOSHITOSHI , NAKAGAWA HITOSHI , TANAKA YASUKUNI , SUGIYAMA KAZUYUKI , ISOBE TOSHIHIRO , TOMONO HIROYOSHI
IPC分类号： C04B35/66 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To obtain a silicon carbide raw material for efficiently manufacturing a castable refractory containing silicon carbide, which is very fine and excellent in corrosion resistance, and to obtain the raw material for the monolithic refractory. SOLUTION: The silicon carbide raw material for the monolithic refractory giving superior drying property and corrosion resistance is characterized in that its average particle size is 0.05-3 mm, that the content of free silicon is 0.1-1 mass%, and that the proportion of the silicon carbide raw material having a particle size of ≤0.25 mm to that having a particle size of ≤0.045 mm is ≤20 mass%. The raw material for the monolithic refractory is obtained by adding 0.5-10 mass% (as an external percentage) of an alumina cement as a binder to 100 mass% of a refractory aggregate comprising 5-80 mass% of the above silicon carbide raw material and the balance of alumina and/or spinel. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了获得用于有效地制造非常细且耐腐蚀性优异的碳化硅的耐浇注耐火材料的碳化硅原料，并获得整体耐火材料的原料。解决方案：提供优异的干燥性和耐腐蚀性的用于整体耐火材料的碳化硅原料的特征在于其平均粒径为0.05-3mm，游离硅的含量为0.1-1质量％，并且粒径≤0.25mm的碳化硅原料与粒径≤0.045mm的碳化硅原料的比例≤20质量％。单体耐火材料的原料通过以100质量％的包含上述碳化硅原料的5-80质量％的耐火骨料为基准，添加作为粘合剂的氧化铝水泥0.5〜10质量％（外部百分比）和氧化铝和/或尖晶石的余量。版权所有（C）2004，JPO

4. 发明专利

JPH10332281A DEVICE AND METHOD FOR APPLICATION OF LINING REFRACTORY FOR MOLTEN METAL CONTAINER 失效
公开(公告)号：JPH10332281A
公开(公告)日：1998-12-15
申请号：JP1769298
申请日：1998-01-14
申请人： NIPPON STEEL CORP
发明人： NAKAGAWA HITOSHI , NAKAMURA YUKIHIRO , YAMADA JUNJI
IPC分类号： B22D41/02 , C21C7/00 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To improve the application efficiency and application quality of a lining refractory for a molten metal container by a method wherein a monolithic refractory is fed in forms, moved along the inner surface of the molten metal container and the monolithical refractory is pressurized on the inner surface of the molten/metal container by a pressure roller through a nozzle. SOLUTION: An applying device 1 attached to a manipulator is charged in a molten steel ladle 2. An endless belt 8 is followed along the inner surface of the molten steel ladle 2 as forms 3 is laterally moved along the inner surface of the molten steel ladle 2. A monolithical refractory 4 mixed with a hardening accelerator is fed through a discharge port 10 of a nozzle 5 between the inner surface of the molten steel ladle 2 and the endless belt 8 together with compressed air. The fed monolithical refractory 4 is pressed against the inner surface of the molten steel ladle 2 by a pressure roller 6. The forms 3 and the pressure roller 6 are helically or annularly moved along the inner surface from the bottom part of the molten steel ladle 2 toward an upper part. This constitution continuously applies the monolithical refractories 4 on the inner surface of the molten steel ladle 2.

5. 发明专利

JPH10281657A REPAIRING METHOD OF LINING REFRACTORY OF MOLTEN METAL VESSEL 失效
公开(公告)号：JPH10281657A
公开(公告)日：1998-10-23
申请号：JP10399397
申请日：1997-04-08
申请人： NIPPON STEEL CORP
发明人： NAKAGAWA HITOSHI , NAKAMURA YUKIHIRO , KOJIMA AKIRA
IPC分类号： B22D41/02 , C21B7/14 , C21C1/06 , C21C5/44 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a repairing method of lining refractories of molten metal vessel which can obtain inner refractories having excellent adhering strength to old refractories and durability with simple means. SOLUTION: In a repairing method of lining refractories of molten metal vessel where monolithic refractories fed under pressure by means of a feed pipe 2 is blow off from a nozzle 3 mounted on the extremity of the feed pipe 1 together with compressed air to old refractories formed on the molten metal vessel as a lining, a hardening promoting agent is added into the monolithic refractories by means of the nozzle 3 and an adhesive agent which produces a carbon bond by baking is added by means of the nozzle 3, and refractories is sprayed and adhered to the old refractories 11 after removing slag therefrom to form an adhesive repairing layer 12.

6. 发明专利

JPH09278547A BASIC AMORPHOUS REFRACTORY 失效
公开(公告)号：JPH09278547A
公开(公告)日：1997-10-28
申请号：JP11116896
申请日：1996-04-09
申请人： NIPPON STEEL CORP
发明人： NAKAGAWA HITOSHI , OSHIMA AKIHIRO , NAKAMURA YUKIHIRO , ASO SEIJI
IPC分类号： C04B35/66
摘要： PROBLEM TO BE SOLVED: To obtain a basic amorphous refractory having excellent durability and capable of controlling the defective infiltration of slag and solving a problem of spalling without deteriorating the high corrosion resistance of the high basic property. SOLUTION: This basic amorphous refractory comprises >=50 pts.wt. of a MgO-Al2 O3 synthetic clinker comprising 50-80wt.% of MgO, 17-50wt.% of Al2 O3 and the remaining amount of inevitable impurities, 1-6 pts.wt. of carbon and the remaining amount of a MgO clinker, wherein the total amount of the components is 100 pts.wt. Especially, the addition of one or more kinds of alumina particles, zirconia particles and titania particles each having a particle diameter of

7. 发明专利

JPH06123561A CONSTRUCTION DEVICE FOR POURING HYDRAULIC WET TYPE FIREPROOF MATERIAL 失效
公开(公告)号：JPH06123561A
公开(公告)日：1994-05-06
申请号：JP27029692
申请日：1992-10-08
申请人： HARIMA CERAMIC CO LTD , NIPPON STEEL CORP
发明人： KOKAKI NAOHARU , NAKAGAWA HITOSHI , HIRAFUKU KEIICHI , MATSUMOTO OSAMI , HASHIMOTO TAKAYOSHI
IPC分类号： F27D1/16
摘要： PURPOSE:To reduce the moisture in the surfaces of particles to be handled to make easier the transportation thereof by a method wherein wet fireproof materials having been kneaded beforehand are carried to a site where lining of the fireproof materials is performed and the materials are crushed and thereafter mixed with a certain amount of binder of hydraulic powder. CONSTITUTION:Wet type fireproof materials (a') having been classified, to the surfaces of which hydraulic powder binder (b) has been attached, are successively fed from a continuous mixer 30A to a hopper 41 of a transportation means 40 and pneumatically transported through a hose 42 by compressed air so as to be sent to a separation and deflocculation means 43 provided at the end of the hose, wherein since the surfaces of the materials (a') are covered with the binder (b), the surfaces have less moisture and hence they do not attach to each other. Consequently, when the materials are pneumatically transported, they do not attach to the inside of the hose 42 so that the hose 42 is not clogged, thereby enabling easy transportation.

8. 发明专利

JP2005060740A Treatment method for chromium-containing waste 有权
标题翻译：含铬废物的处理方法
公开(公告)号：JP2005060740A
公开(公告)日：2005-03-10
申请号：JP2003207801
申请日：2003-08-19
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： ISHIBASHI YASUSHI , ARAI MASAYUKI , NOMATA HIROYUKI , NAKAGAWA HITOSHI
IPC分类号： B09B3/00 , C21C1/02 , C21C1/04 , C21C5/28 , C22B7/00
CPC分类号： Y02P10/214
摘要： PROBLEM TO BE SOLVED: To provide a method with which chromium-containing waste is made to be harmless and slag having no elution of hexavalent chromium, is generated, and the gentleness to the environments is obtained and the recycle can easily be obtained at a low cost. SOLUTION: In a converter refining process, with which after performing desiliconizing or desiliconizing and dephosphorizing refining by utilizing the converter, the blowing is once interposed, and an intermediate slag-off process for removing the slag, is arranged and after completing the slag-off, decarburizing refining is continuously performed and after completing tap-off of molten steel, under a state of leaving the decarburized slag at a high temperature in the furnace without removing this slag, this slag is reused to the desiliconizing or the desiliconizing and dephosphorizing refining in the following molten iron, the chromium-containing waste is added at the above decarburizing refining. The reduction of chromium and the dilution of chromium are performed with the decarburizing refining and further, the dilution of chromium is performed with the desiliconizing and the dephosphorizing refining, and thus, the lowering of the chromium concentration in the removed desiliconized and dephosphorized slag is realized. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供使含铬废物无害化并且不会产生六价铬的洗脱的方法，并且获得对环境的温和，并且可以容易地获得再循环以低成本。解决方案：在转炉精炼过程中，通过利用转炉进行脱硅或脱硅脱磷脱磷后，吹入一次，并排出炉渣的中间脱渣工艺，并在完成后脱渣，脱碳精炼连续进行，钢水分离完毕后，在炉内高温脱碳脱渣的状态下，不除去渣，将该渣再利用于脱硅或脱硅，在以下的铁水中脱磷精炼，在上述脱碳精炼中添加含铬废弃物。通过脱碳精炼进行铬的还原和铬的稀释，进一步，通过脱硅和脱磷精炼进行铬的稀释，从而实现除去的脱硅和脱磷渣中的铬浓度的降低。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2002340869A METHOD AND DEVICE FOR NONDESTRUCTIVE INSPECTION FOR HAMMERING TEST WORKPIECE AND QUALITY MANAGEMENT METHOD 失效
公开(公告)号：JP2002340869A
公开(公告)日：2002-11-27
申请号：JP2001141731
申请日：2001-05-11
申请人： NIPPON STEEL CORP , SATO KOGYO
发明人： ITO YOSHIHIRO , ASO TATSUJI , TAIRA HATSUO , NAKAGAWA HITOSHI , MATSUI TAIJIRO , UTAGAWA NORIYUKI , NAKAMURA HIDETAKA , KURODA CHITOSE
IPC分类号： G01N29/12 , B22D2/00 , G01H1/14
摘要： PROBLEM TO BE SOLVED: To provide an inspection method and a device for it capable of quickly detecting a clearance and a crack on a centimeter order or less in nondestructive inspection of a hammering test workpiece (for example, a refractory, especially, a monolithic refractory, or a concrete member) for indexation of a soundness degree of a molding and to provide a means for managing production/shipment quality as a subassembly. SOLUTION: In this nondestructive inspection method for the hammering test workpiece, a frequency exhibiting maximum amplitude in hammering of the hammering test workpiece surface is measured to be compared with an ideal natural frequency of the hammering test workpiece for indexation of the soundness degree of the hammering test workpiece.

10. 发明专利

JP2000290079A MOLTEN METAL VESSEL PROVIDED WITH MONOLITHIC REFRACTORY HAVING RADIALLY FORMED SLITS AND MANUFACTURE OF THE SAME VESSEL 失效
公开(公告)号：JP2000290079A
公开(公告)日：2000-10-17
申请号：JP10007899
申请日：1999-04-07
申请人： NIPPON STEEL CORP
发明人： IKEMOTO TADASHI , SAITO YOSHITOSHI , YAMADA JUNJI , NAKAGAWA HITOSHI
IPC分类号： B22D41/00 , C04B35/66 , F27D1/00 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a molten metal vessel provided with a monolitic refractory having slits radially formed on a surface or an inside of the refractory. SOLUTION: This vessel consists of a monolithic refractory 3, permanent brick 2 and an iron shell 1, placed in that order from the inside of the vessel, wherein the monolithic refractory 3 has slits radially formed. This manufacturing method comprises: laying the permanent brick 2 on the inner surface of the iron shell 1; then inserting a core; thereafter casting a material of the monolithic refractory 3; curing the material into a formed body and thereafter removing the frame mold from the formed body; and firing the formed body to manufacture the objective molten metal vessel provided with the monolithic refractory 3; wherein before inserting the core, spacers each consisting of a heat-eliminable material are fixed to the permanent brick 2. Thus, the monolithic refractory 3 integrally formed is inhibited from being damaged and the service life of the molten metal vessel is prolonged and the metal smelting cost can be reduced.

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