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1. 发明专利

JP2003261392A UNSHAPED REFRACTORY 审中-公开
公开(公告)号：JP2003261392A
公开(公告)日：2003-09-16
申请号：JP2002182809
申请日：2002-06-24
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： NISHIDA SHIGEFUMI , IIDA ATSUHISA , MAEDA EIZO , TANAKA SEIJIRO
IPC分类号： B22D41/02 , C04B35/66 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To provide unshaped refractories which have reduced cracking and peeling, and realize high durability by improving the corrosion resistance and slag infiltration resistance thereof. SOLUTION: As an alumina raw material and an alumina-magnesia spinel raw material as using raw materials, the ones having high purity are used, and also, the content of the alumina raw material (alumina hyper-fine powder) of ≤1 μm, and the content of the alumina-magnesia spinel of ≤1 mm are controlled, so that the durability thereof is improved in addition to corrosion resistance and slag infiltration resistance compared with the conventional unshaped refractories. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003231912A GAS BLOW NOZZLE 审中-公开
公开(公告)号：JP2003231912A
公开(公告)日：2003-08-19
申请号：JP2002030448
申请日：2002-02-07
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： ISHII HIROMASA , SASAKI KIMIAKI , TANAKA SEIJIRO
IPC分类号： B22D11/10 , B22D1/00 , C21C5/48 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To provide a gas blow nozzle which is excellent in durability, prevents the carburization of a small diameter metal pipe for gas introduction by a carbon-containing refractory, and prevents the decarburization of a carbon- containing refractory by a blown gas even when the small diameter metal pipe is melted. SOLUTION: This gas blow nozzle 1 is formed by fitting the small diameter metal pipe 3 for gas introduction in the carbon-containing refractory so as to enable to blow out a gas. Between the small diameter metal pipe 3 and the carbon-containing refractory 2, a fire-resistant sintered body 4 is set. The sintered body 4 is a cylinder with an internal diameter of 3-8 mm. In the sintered body 4, the small diameter metal pipe 3 with an external diameter of 3-6 mm is inserted so that the distance between them is 2 mm or less or they are in tight contact with each other. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003171173A NOZZLE FOR MELTING POT 审中-公开
公开(公告)号：JP2003171173A
公开(公告)日：2003-06-17
申请号：JP2001369617
申请日：2001-12-04
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： KINOSHITA HITOYOSHI , SASAKI KIMIAKI , TANAKA SEIJIRO
IPC分类号： B22D11/10 , B22D41/54 , C04B35/103
摘要： PROBLEM TO BE SOLVED: To improve the thermal spalling resistance of a nozzle for a melting pot of refractories for a nozzle apparatus mounted on a molten metal vessel such as a ladle and a tundish, and to improve its corrosion resistance. SOLUTION: One or more kinds selected from alumina-carbon based refractory filler raw materials, 0.2 to 10.0 pts.wt. fine graphite of ≤0.10 mm particle size, 0.1 to 8.0 pts.wt. of one or more kinds selected from metals, and 0.05 to 10.0 pts.wt. of one or more kinds selected from resins as a binder are jointly added. As the alumina-carbon based refractory filler raw materials, alumina, silica, zirconia, magnesia, spinel, or the like, can be used. Further, 5.0 to 10.0 pts.wt. fine graphite of ≤0.1 mm particle size is preferably added. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2003145264A NOZZLE FOR POURING MOLTEN METAL 审中-公开
公开(公告)号：JP2003145264A
公开(公告)日：2003-05-20
申请号：JP2001345673
申请日：2001-11-12
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： KINOSHITA HITOYOSHI , SASAKI KIMIAKI , TANAKA SEIJIRO
IPC分类号： B22D11/10 , B22D41/34 , B22D41/50
摘要： PROBLEM TO BE SOLVED: To improve yield and durability of a nozzle for pouring molten metal, such as an upper nozzle, an intermediate nozzle and a lower nozzle for a sliding nozzle, used when the molten metal is poured from a molten metal vessel, such as a ladle, and a tundish. SOLUTION: A nozzle body 11 of the nozzle 10 for pouring the molten metal is formed as a straight cylindrical shape having the outer diameter for being fitted to the lower part of a metal case 12 and also, monolithic refractory 14 is filled in a spacing part 13 between the upper side of this straight cylindrical nozzle body 11 and the metal case 12 fitted to the outer side thereof. The dislocation of the metal case 12 caused by fastening to the metal case 12 received when the nozzle is fixed in use, can be restrained by shrinkage-fitting an iron hoop 17 projecting locking rods 16 sideways in an axially symmetrical manner to the outer peripheral part at the upper side of the nozzle body 11 and embedding the iron hoop 17 and these locking rods 16 into the monolithic refractory 14 or by extending the lower part of the metal case 12 and bending the extending lower end part to the lower end surface side of the nozzle body 11 to restrain it to the lower end surface of the nozzle body 11.

5. 发明专利

JP2003137666A MONOLITHIC REFRACTORY FOR BLAST FURNACE RUNNER 审中-公开
公开(公告)号：JP2003137666A
公开(公告)日：2003-05-14
申请号：JP2001334940
申请日：2001-10-31
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： IIDA MASAKAZU , MUROI NOBUAKI , TANAKA SEIJIRO
IPC分类号： C04B35/66 , C21B7/04 , C21B7/14
摘要： PROBLEM TO BE SOLVED: To improve the service life of a blast furnace runner by increasing its corrosion resistance, and to save manpower by reducing the frequency of its restoration. SOLUTION: The monolithic refractories for a blast furnace runner contain a >=1 wt.% SiC raw material and 0.01 to 10.0 wt.% NiO powder of a =5 wt.%.

6. 发明专利

JPH10226563A PRODUCTION OF SLIDING NOZZLE PLATE 失效
公开(公告)号：JPH10226563A
公开(公告)日：1998-08-25
申请号：JP3345697
申请日：1997-02-18
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OGATA HIRONORI , SASAKI KIMIAKI , OKAMOTO TAKESHI , TANAKA SEIJIRO
IPC分类号： C04B35/00
摘要： PROBLEM TO BE SOLVED: To provide the method for producing a refractory for the sliding nozzle plate of a steelmaking furnace. SOLUTION: An alumina-zirconia spinel material consisting of 40-80.5wt.% alumina, 17-40wt.% zirconia and 0.5-18wt.% magnesia and contg. an alumina- zirconia spinel is mixed by 2-50wt.%, based on the total refractory material, with at least one kind of refractory material, carbon and at least one kind of metal powder are further added, and the admixture is kneaded with a binder such as phenol resin, compacted and then calcined in a reducing atmosphere. Consequently, the sliding nozzle plate with the resistance to wear, spalling and corrosion further improved than before is produced.

7. 发明专利

JPH09277188A SAFETY COVER FOR VERTICAL TYPE LARGE CUTTER 失效
公开(公告)号：JPH09277188A
公开(公告)日：1997-10-28
申请号：JP11845396
申请日：1996-04-15
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MUROI SHINJI , TANAKA SEIJIRO
IPC分类号： B26D7/22 , B26D1/14
摘要： PROBLEM TO BE SOLVED: To prevent an accident resulting in physical injury due to the cutter blade of a large cutter by concealing the safety covers in such a state as clamped from both sides like a sandwich, and projecting the cutter blade through space between the safety covers for cutting a workpiece. SOLUTION: When an operation handle is pushed down to continue cut a cutting workpiece 6, the expansion parts 11 of a fixed cover 7 slide on the bent internal surface of safety covers 8, thereby laterally pushing and expanding the safety covers 8 toward both sides. Then, a cutter blade 2 sequentially projects through space between the safety covers 8 for cutting the workpiece 6. Also, when a cutting process is over and the operation handle is raised, the cutter blade 2 moves upward and is housed within the safety covers 8 according to a reversed order, thereby being completely concealed. According to this construction, no danger takes place, even upon the occurrence of the racing of the cutter blade 2.

8. 发明专利

JPH0966356A ZIRCONIA TUNDISH COLLAR NOZZLE AND ITS PRODUCTION 失效
公开(公告)号：JPH0966356A
公开(公告)日：1997-03-11
申请号：JP22627195
申请日：1995-09-04
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SAITO MASANORI , YAMANE TOSHIO , TANAKA SEIJIRO
IPC分类号： B22D41/52 , B22D11/10 , B22D41/54 , C04B35/48 , C04B41/87
摘要： PROBLEM TO BE SOLVED: To provide a zirconia tundish collar nozzle formed in such a manner that its corrosion resistance is easily and inexpensively enhanced and a process for producing the same. SOLUTION: A slurry is formed by dispersing yttrium oxide powder into liquid. The slurry is forcibly fed and/or sucked to the working surface of an inside hole to pack the pores of the surface and thereafter, the yttrium oxide powder and the zirconia of a base material are brought into reaction by executing a heat treatment.

9. 发明专利

JPH0966355A TUNDISH COLLAR NOZZLE AND ITS PRODUCTION 失效
公开(公告)号：JPH0966355A
公开(公告)日：1997-03-11
申请号：JP22627295
申请日：1995-09-04
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SAITO MASANORI , YAMANE TOSHIO , TANAKA SEIJIRO
IPC分类号： B22D41/50 , B22D11/10 , B22D41/52 , B22D41/54 , C04B35/48 , C04B41/87
摘要： PROBLEM TO BE SOLVED: To produce a tundish collar nozzle which has excellent corrosion resistance while its cost is low and to provide a process for producing the tundish color nozzle capable of easily and inexpensively producing the tundish collar nozzle. SOLUTION: A slurry is formed by dispersing fine solid particles having refractoriness. The slurry is forcibly fed to the working surface of the inside hole of a base material to densely pack the pores opened on the working surface of the inside hole over the prescribed depth; thereafter, the working surface of the inside hole is made denser by executing a heat treatment.

10. 发明专利

JPH0952775A CASTABLE MONOLITHIC REFRACTORY 失效
公开(公告)号：JPH0952775A
公开(公告)日：1997-02-25
申请号：JP22752895
申请日：1995-08-11
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： KANETANI SATOSHI , MORI JUNICHIRO , TORITANI YASUNOBU , TANAKA SEIJIRO
IPC分类号： C04B35/66
摘要： PROBLEM TO BE SOLVED: To obtain castable monolithic refractories capable of suppressing cracking due to ununiformity of a structure and capable of preventing the peeling and damage of an executed construction. SOLUTION: Silica flour is added to a refractory material by =98wt.% A12 O3 content with magnesian stock having >=95wt.% MgO content and has a chemical compsn. contg. 65-85wt.% Al2 O3 and 15-35wt.% MgO. Aluminous stock of

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