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1. 发明专利

JP2000335980A GRAPHITE-CONTAINING MONOLITHIC REFRACTORY 失效
公开(公告)号：JP2000335980A
公开(公告)日：2000-12-05
申请号：JP15105599
申请日：1999-05-31
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , URUSHIYA AKITOSHI , TERAYAMA SATORU , KOMATSUBARA NOBORU
IPC分类号： C04B35/66 , C04B41/50 , C21C1/06 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To improve spalling resistance and obtain the same durability as brick even in a case where execution range is wide by compounding a mullite raw material specified in particle diameter and alumina content with artificial graphite having a specific particle diameter at a specific ratio. SOLUTION: This monolithic refractory comprises 10-70 wt.% mullite raw material containing 65-90 wt.% alimina having 100 μm to 10 mm particle diameter and 3-20 wt.% artificial graphite having 100 μm to 1 mm average particle diameter. Generally commercialized electrofused product or baked product can directly be used as the mullite raw material and, as necessary, single mullite raw material or plural mullite raw materials are pulverized and classified and compounded and can be used singly or as a mixture of the plural raw materials. It is preferable to add and use 0.5-6 wt.% pitch powder having 100 μm to 1 mm particle diameter and 4-12 wt.% SiC powder having

2. 发明专利

JP2003171715A HOT REPAIRING METHOD FOR IMMERSED PIPE OR THE LIKE IN VACUUM DEGASSING VESSEL, AND REFRACTORY THEREFOR 审中-公开
公开(公告)号：JP2003171715A
公开(公告)日：2003-06-20
申请号：JP2001372304
申请日：2001-12-06
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： IIDA ATSUHISA , KOMATSUBARA NOBORU , MAEDA EIZO , TANAKA SEIJIRO , TATENO SHIGEO
IPC分类号： C04B35/66 , C21C7/10 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To improve the serviceability of an immersed pipe or the like damaged in an RH (Reinstahl Huttenwerk and Heraus process) degassing vessel or the like by applying hot repair to the damaged part of the immersed pipe damaged therein and to reduce a working load therefor. SOLUTION: A cylindrical vessel 2 for covering the lower damaged part of an immersed pipe 1 or the like of a ladle, a vacuum degassing vessel in RH, DH (Dortmund Horder Union) or the like is mounted with refractories 5 for repairing having fluidity, and the damaged part of the damaged immersed pipe 1 or the like is immersed into the cylindrical vessel 2, and the damaged part of the immersed pipe 1 or the like is filled with the refractories 5 for repairing, and is repaired. As the refractories 5 for repairing, the ones obtained by adding 0.5 to 20 wt.% aluminum phosphate to a 100 wt.% refractory raw material can be used. COPYRIGHT: (C)2003,JPO

3. 发明专利

JPH11269528A ASSEMBLING TYPE CORE FOR EXECUTING WORK OF POURING REFRACTORY TO LINING OF TORPEDO CAR 失效
公开(公告)号：JPH11269528A
公开(公告)日：1999-10-05
申请号：JP7469398
申请日：1998-03-23
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , NANBU MASAO , TAKADA SHIGENOBU , IIDA MASAKAZU , KOMATSUBARA NOBORU , YAMAGUCHI TOYOHIDE
IPC分类号： C21C1/06 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide an assembling type core for executing the work of pouring refractory to the lining of a torpedo car, by which an excellent working precision can be obtained the removing work of the core can be executed safely in a short time after curing the pouring refractory. SOLUTION: The core 2 is divided into sectionally split-type plural pieces of panels 2A-2F in the X-direction, and further, each of the divided panels 2A-2F is divided into plural pieces of units 2B1-2B8, 2D1-2D8, or the like in the circumferential direction. At least one piece unit 2D1 in the plural pieces of units 2B1-2B8, 2D1-2D8, or the like has a draft TX arranged on the both side surface thickness parts in the X-direction and extended over both sides in the X-direction to the inner part direction of the torpedo car and a draft TL arranged at both edge in the circumferential direction and extended over both sides in the circumferential direction to the inner part direction of the torpedo car.

4. 发明专利

JP2001048661A MORTAR REINFORCER FOR REPAIRING HIGH TEMPERATURE FURNACE BRICK, HIGH TEMPERATURE FURNACE BRICK REPAIRING MATERIAL AND METHOD FOR REPAIRING HIGH TEMPERATURE FURNACE BRICK 失效
公开(公告)号：JP2001048661A
公开(公告)日：2001-02-20
申请号：JP21508799
申请日：1999-07-29
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD , TAIHO IND CO
发明人： ANDO TAKESHI , HONMA MICHIO , KISHI TADAKATSU , KOMATSUBARA NOBORU , NAKAI SHIGERU , ONOZAWA MITSUO
IPC分类号： C04B28/34 , C04B35/66 , F27D1/00 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To obtain a mortar reinforcer for repairing a high temperature furnace brick utilized for filling a gap due to the difference in the coefficient of thermal expansion between the metallic part of the mouth of a kiln and a firebrick, repairing a firebrick surface-deteriorated by its heat history and wear and filling a through hole, having high adhesiveness and exhibiting repair effect over a long period of time, to obtain a high temperature furnace brick repairing material and to provide a method for repairing a high temperature furnace brick. SOLUTION: A slurried aqueous solution (mortar reinforcer) is obtained by mixing 100 pts.wt. aqueous solution having a composition, on the oxide basis, consisting of 0-5 wt.% SiO2, 3-15 wt.% R2O (R is one or more selected from Na, K and Li), 3-12 wt.% B2O3, 0.2-3 wt.% P2O5 and the balance water with 10-100 pts.wt. powdery composition consisting of >=65 wt.% SiO2 and

5. 发明专利

JP2000212624A REPAIR OF LINING REFRACTORY IN TORPEDO LADLE 失效
公开(公告)号：JP2000212624A
公开(公告)日：2000-08-02
申请号：JP1017599
申请日：1999-01-19
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , KAMO MOMOKI , URUSHIYA AKITOSHI , TERAYAMA SATORU , KOMATSUBARA NOBORU
IPC分类号： C21C1/06 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To extend the using term of a brick till being demolished and wasted by forming the contacting parts of new bricks at a poured molten iron padding portion with monolithic refractory in the longitudinal direction of a torpedo ladle as the structure of teeth of a comb. SOLUTION: This repairing method is the one, with which the worn bricks at the poured molten iron padding portion are replaced with the new brickes, and on the worn bricks except this padding portion, the monolithic refractory is lined to a desired thickness. The structure of the teeth of the comb means to form the state in which the bricks and monolithic refractory are mutually inserted in the plane view at the contacting parts. The bricks 6 at the padding portion whose thickness become thin by using, are demolished and removed and replaced with the new bricks. At this time, the contacting parts 8 with the monolithic refractory in the longitudinal direction of the torpedo ladle are laid with the new bricks so as to form the structure of the teeth of the comb. As for the worn bricks except the padding portion, a part thereof is replaced with anchor bricks 10 and the monolithic refractory is lined on this portion. The pulling-up at the contacting parts of the new bricks with the monolithic refractory is prevented and the wearing speeds at the contacting parts are reduced. The lining work of the monolithic refractory is executed with a wet-spraying or a pouring method.

6. 发明专利

JPH11310815A METHOD FOR WORKING CASTABLE REFRACTORY 失效
公开(公告)号：JPH11310815A
公开(公告)日：1999-11-09
申请号：JP11734698
申请日：1998-04-27
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , NANBU MASATO , IIDA MASAKAZU , KOMATSUBARA NOBORU , YAMAGUCHI TOYOHIDE
IPC分类号： C04B40/02 , C21C1/06 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To effectively prevent the defect of a worked body caused by the explosion at the time of drying and the mechanical damage at the time of removing a core, etc., by casting a castable refractory containing a specific quantity of alumina cement into a worked frame space and removing moisture at a specific temp. after curing at a specific temp. SOLUTION: At the time of working the lining refractory on the inner wall surface of a torpedo car, a backup refractory, such as chamotte brick, is worked along an iron shell and the core is set in the inner side of this car to form a casting space. The castable refractory is cast into this space. This castable refractory contains 0.5-8 wt.% alumina cement and as the other, specific quantities of SiC, artificial graphite, pitch, etc. After casting work, the core and the inside of the car are heated and the castable refractory is heated at 30-80 deg.C and cured for about 30-80 hrs. Thereafter, desirably, the core is removed and the castable refractory is heated to >=100 deg.C by using a burner, etc., to remove the moisture and dry the castable refractory.

7. 发明专利

JPH11189477A GRAPHITE-CONTAINING CASTABLE REFRACTORY MATERIAL FOR MIXER CAR 失效
公开(公告)号：JPH11189477A
公开(公告)日：1999-07-13
申请号：JP35755997
申请日：1997-12-25
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , NANBU MASAO , TAKADA SHIGENOBU , IIDA MASAKAZU , KOMATSUBARA NOBORU , YAMAGUCHI TOYOHIDE
IPC分类号： B22D41/02 , C04B35/103 , C04B35/66 , C21C1/06
摘要： PROBLEM TO BE SOLVED: To obtain a casting material for lining for a mixer car, having a lower water content an excellent casting property, satisfying both dissolved loss resistance and spalling resistance by mixing alumina and/or alumina- magnesia spinel as a main component with artificial graphite and pitch powder in a specific ratio. SOLUTION: This material is obtained by mixing alumina and/or alumina- magnesia spinel as a main component with artificial graphite and pitch powder so as to give 5-15 wt.% content of artificial graphite having 100-1,000 μm average particle diameter, 0.5-6 wt.% of pitch powder, 35-50 wt.% of the total content of alumina and/or alumina-magnesia spinel having >1 mm and 199 μm and

8. 发明专利

JP2000161862A DRYING METHOD FOR IRREGULAR REFRACTORY 失效
公开(公告)号：JP2000161862A
公开(公告)日：2000-06-16
申请号：JP33688798
申请日：1998-11-27
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , KAMO MOMOKI , YOSHIDA MASAKAZU , TERAYAMA SATORU , KOMATSUBARA NOBORU
IPC分类号： C21C1/06 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To dry up an irregular refractory containing graphite being employed as the inner wall of a pig iron mixing vehicle without causing any explosive cracking by heating a mixture of irregular refractory with a gas of specified temperature in order to remove free water therefrom and then heating it directly with fire. SOLUTION: When an irregular refractory containing graphite is applied to the inner wall of a pig iron mixing vehicle, an irregular refractory material containing 3-20 wt.% of graphite and 0.5-8 wt.% of alumina cement is mixed, poured to a specified position, cured and then dried up by heating. In the heating/drying process, the poured irregular refractory is exposed at first to a gas of 400 deg.C or below, i.e., hot air, and dried. The poured molding material is heated above the boiling point of water and free water is removed therefrom. In a second stage heating/drying process, it is dried up by heating directly with fire from a burner, for example, in order to remove crystal water principally.

9. 发明专利

JPH11292642A MONOLITHIC REFRACTORY FOR LINING METAL MIXING CAR 失效
公开(公告)号：JPH11292642A
公开(公告)日：1999-10-26
申请号：JP10650498
申请日：1998-04-16
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , KAMO MOMONORI , IIDA MASAKAZU , KOMATSUBARA NOBORU , YAMAGUCHI TOYOHIDE
IPC分类号： C04B35/66
摘要： PROBLEM TO BE SOLVED: To improve spalling resistance and manifest excellent durability comparable to that of refractory brick by mixing an alumina aggregate with graphite and a magnesia having a specific particle diameter in a specific proportion. SOLUTION: This monolithic refractory is obtained by mixing 3-20 wt.% of graphite with 1-10 wt.% of a magnesia having 100-3,000 μm average particle diameter. Artificial graphite having 100-1,000 μm particle diameter is most preferred as the graphite. An electrofused magnesia is most preferred as the magnesia. Alumina having 0.1 μm to 10 mm particle size is usually used; however, up to about 50 wt.% of the alumina may be replaced with a magnesia- alumina-spinel having 0.1 μm to 10 mm particle size. A pitch powder in an amount of 0.5-6 wt.% is preferably further added or 4-20 wt.% of an SiC powder having

10. 发明专利

JPH1053805A TORPEDO CAR AND METHOD FOR POURING MONOLITHIC REFRACTORY IN TORPEDO CAR 失效
公开(公告)号：JPH1053805A
公开(公告)日：1998-02-24
申请号：JP21247696
申请日：1996-08-12
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KIYOTA SADAKIMI , KUMAGAI MASATO , NANBU MASAO , TAKADA SHIGENOBU , IIDA MASAKAZU , KURODA MUNEKATSU , KOMATSUBARA NOBORU
IPC分类号： C21C1/06 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To execute the positioning and the fixing of a core arranged in a torpedo car for pouring monolithic refractory for lining the torpedo in good precision and good working efficiency. SOLUTION: Anchors 3 are inserted through plural through-holes 5 arranged on an iron shell 4 of the torpedo car from the outside to the inside of the car, and the head part 3A of the anchor 3 at the outside of the car is fitted and set to an anchor fixed base seat 7 arranged at the outside 4 of the iron shell of the torpedo car. The head part 3A at the outside of the iron shell is fixed with a bolt and a nut 9 from the outside with a fixed plate 8. The positioning and the fixing of the core 2 are executed with the anchor 3 in the good precision, and the monolithic refractory 13 is cast in a gap between a permanent lined refractory 12 formed on the inner surface of the iron shell 4 of the torpedo car and the core 2 to hold the monolithic refractory 13 with the anchor 3.

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