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1. 发明专利

JPH07237979A FLAME SPRAYING REPAIR MATERIAL 失效
公开(公告)号：JPH07237979A
公开(公告)日：1995-09-12
申请号：JP4987894
申请日：1994-02-22
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , NAKAJIMA MASAYOSHI
IPC分类号： C04B35/66 , C21B7/06 , C23C4/10 , F27D1/16
摘要： PURPOSE:To obtain a flame spraying repair material, usable for flame spray repairing a site exposed to an acidic atmosphere such as a burner partition wall of a hot-air furnace attached to a blast furnace and excellent in peel or thermal change resistances. CONSTITUTION:This flame spraying repair material contains 70-90wt.% refractory aggregate, having

2. 发明专利

JPH06256065A REFRACTORY FOR HOT REPAIRING 失效
公开(公告)号：JPH06256065A
公开(公告)日：1994-09-13
申请号：JP3761093
申请日：1993-02-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , KISHI TADAKATSU , YOSHIMURA HIDEO
IPC分类号： C04B35/66 , C04B28/26
摘要： PURPOSE:To provide the durable hot-repairing refractory capable of efficiently repairing cracks and gas-leaking parts generated in the wall and end parts of the carbonization chamber of a coke oven and in places close to the coal- charging port. CONSTITUTION:The refractory for hot-repairing comprises 5-20wt.% of powdery sodium silicate having a SiO2/Na2O molar ratio of

3. 发明专利

JPH0611271A METHOD FOR LINING MOLTEN METAL CONTAINER OR LIKE 失效
公开(公告)号：JPH0611271A
公开(公告)日：1994-01-21
申请号：JP19293692
申请日：1992-06-26
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： MITSUI HARUO , YAMAZAKI SADAYUKI , SUGAWARA HIDEYO
IPC分类号： B22D41/02 , C21B7/14 , C21C7/00 , F27D1/16
摘要： PURPOSE:To efficiently and safely perform the lining operation of molten metal containers such as blast furnace trough and ladle. CONSTITUTION:The fireproofing material 2 for use in lining molten metal containers 1 such as blast furnace trough and ladle contains at least 80wt.% of coarse powder having a particle diameter of at least 1mm granulated by adhering the refractory powder having a particle diameter of at most 0.3mm to the refractory powder having a particle diameter of at least 0.3mm and at most 5wt.% of fine powder having a particle diameter of at most 0.045mm. This fireproofing material 2 is charged into a forming frame 3 of the molten metal container 1 and water or liquid binder is sprinkled over or poured into the forming frame 3 to give it fluidity. The fireproofing material 2 is then vibrated so as to be subjected to fluidized filling in the forming frame 3 and deaerated, thereby completing the lining operation.

4. 发明专利

JPH05178676A YELLOW CASTABLE FOR INDICATION 失效
公开(公告)号：JPH05178676A
公开(公告)日：1993-07-20
申请号：JP35764391
申请日：1991-12-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： TANABE YOICHI , MITSUI HARUO , YOSHIMURA HIDEO
IPC分类号： C04B35/66 , C10B5/00
摘要： PURPOSE:To obtain yellow castable for indication which is not discolored in the place of high temperature such as the top part of a coke oven in an ironworks and has prolonged service life by using iron oxide-based yellow pigment of specified amount as yellow pigment. CONSTITUTION:The yellow castable is obtained by adding 1-20 pts.wt. iron oxide-based yellow pigment to 100 pts.wt. castable. Even when the yellow castable is heated to 250 deg.C from ordinary temperature, it is not discolored and keeps yellow. Therefore, the castable is used for indication of a safety passage in the top of a coke even in an ironworks wherein the temperature becomes 100-250 deg.C. When the loadings of iron oxide-based yellow pigment are less than 1%, coloring is made thin. In the case of exceeding 207%, only the price is raised and the effect thereof is not changed.

5. 发明专利

JPH054875A SPRAYING REFRACTORY 失效
公开(公告)号：JPH054875A
公开(公告)日：1993-01-14
申请号：JP18178291
申请日：1991-06-25
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： UNOSAKI NOBUYUKI , TORITANI YASUNOBU , MUROI NOBUAKI , MITSUI HARUO , OGUCHI MASAO
IPC分类号： C04B35/66
摘要： PURPOSE:To impart sufficient fire resistance and corrosion resistance and reduce rebound loss by increasing the binding force of refractory coarse grains to refractory fine grains with a liquid surfactant and a liquid binder in a refractory for dry spraying application. CONSTITUTION:The subject spraying refractory for spraying application is obtained by wetting the surfaces of refractory coarse grains with a liquid surfactant and/or a liquid binder, e.g. water glass, applying refractory fine grains to the surfaces, heating and dehydrating the surfaces, hardening the binder, forming shells, granulating the grains, feeding the resultant granulated material to a spraying nozzle and mixing the fed granulated material with water supplied from another passage. Since the aforementioned spraying refractory is capable of sufficiently bonding the refractory coarse grains to the refractory fine grains, the nozzle is prevented from clogging. The above-mentioned refractory has fire resistance and corrosion resistance by no means inferior to those of casting materials, etc., and is an efficient material with a small rebound loss and hardly any deterioration in working environment due to dusting.

6. 发明专利

JPH0455374A SPRAYING REFRACTORY MATERIAL 失效
公开(公告)号：JPH0455374A
公开(公告)日：1992-02-24
申请号：JP16617390
申请日：1990-06-25
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , OGUCHI MASAO , KAWAKAMI TATSUO
IPC分类号： C04B35/66
摘要： PURPOSE:To obtain the spraying refractory material which shows durability equal to the casting material by combining a mortar part wherein a liquid binder is added to both the surface-treated refractory material and the refractory superfine powder with a dry part consisting of specified refractory fine powder. CONSTITUTION:In the spraying refractory material, a dry part and a mortar part are supplied to a nozzle through the separated routes, respectively, and mixed in this nozzle to perform execution. The dry part and the mortar part consist of the composition described hereunder, respectively. In other words, the dry part is constituted of both 50 - 95 wt.% refractory material whose surface is uniformly wetted by a liquid surfactant or a liquid binder and 5 - 50 wt.% refractory fine powder admixed with a powdery additive such as a hardening agent and a quick setting agent. Further, the mortar part is obtained by adding a liquid binder at 10 - 30 wt.% for 100 wt.% mixture consisting of both 30 - 80 wt.% refractory material whose surface is uniformly wetted by the liquid surfactant or the liquid binder and 20 - 70 wt.% refractory ultrafine powder.

7. 发明专利

JPH01273654A NOZZLE FOR POURING MOLTEN METAL 失效
公开(公告)号：JPH01273654A
公开(公告)日：1989-11-01
申请号：JP10017788
申请日：1988-04-25
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD , HITACHI LTD
发明人： BESSHO NAGAYASU , FUJII TETSUYA , IMAIDA YASUO , ISOMURA KEIICHIRO , MORIWAKI SABURO , MITSUI HARUO , KIMURA TOMOAKI
IPC分类号： B22D11/06 , B22D11/10
摘要： PURPOSE:To pour uniform molten metal flow without developing any molten metal penetration, etc., between a pouring nozzle and belts by satisfying the relational inequalities on the pouring nozzle. CONSTITUTION:The nozzle is composed of an upper nozzle 7 and a lower nozzle and discharging hole of the upper nozzle is inserted into the upper part of the lower nozzle. Then, the nozzle is to satisfy the undermentioned relational inequalities. (x-y)/2>=5mm, 2mm =9,800mm>=P>=150mm, wherein, x: cast slab thickness (mm), y: thickness at end part of the lower nozzle containing refractory thickness (mm), z: slit gap to cast slab thickness direction at end part of the lower nozzle (mm), l: distance from end part of the lower nozzle to the position, which the whole thickness of the lower nozzle refractory becomes the equal with the cast slab thickness (x) (mm), P: distance from discharging hole of the upper nozzle 7 to the end part of the lower nozzle (mm). By this method, the uniform molten metal flow can be poured and the service lives of the nozzle and the belt are extended.

8. 发明专利

JPH01100070A REFRACTORY FOR SPRAY COATING 失效
公开(公告)号：JPH01100070A
公开(公告)日：1989-04-18
申请号：JP25868987
申请日：1987-10-14
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , SHIMIZU MASASHIGE , KONDO TOSHIHIKO , MIKI NORIO
IPC分类号： C04B35/66
摘要： PURPOSE:To obtain a spray coating refractory having excellent abrasion resistance, by adding an organic sulfonic acid salt, calcium hydroxide and a swelling acrylic polymer to a mixture of a hard refractory aggregate and a specific binder. CONSTITUTION:The objective refractory is produced by compounding (A) a refractory raw material composed of 50-80wt.% of hard refractory aggregate and the remaining part of a binder consisting of alumina cement, fine silica powder and fine alumina-silica powder with, based on the whole refractory raw material, (B) 0.1-0.5wt.% of an organic sulfonic acid salt, 0.1-0.5wt.% of calcium hydroxide and 0.005-0.02wt.% of a swelling acrylic polymer. The bonding force of the compounded binder at a low temperature zone (room temperature - 500 deg.C) is originated chiefly from the hydration reaction of alumina cement and the force weakens at >500 deg.C. A firm bonding power can be maintained in the present refractory in an intermediate temperature zone (500-1,000 deg.C) by the sintering force of the fine silica powder and in a high- temperature zone (1,000-1,300 deg.C) by the sintering force of the fine alumina-silica powder.

9. 发明专利

JPS637308A CLOSING METHOD FOR BLAST FURNACE TAP HOLE 失效
公开(公告)号：JPS637308A
公开(公告)日：1988-01-13
申请号：JP15258386
申请日：1986-06-27
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YAMANE TOSHIO , TORITANI YASUNOBU , MITSUI HARUO , KAWAKAMI TATSUO
IPC分类号： C21B7/12
摘要： PURPOSE:To enable stable tapping and long-period tapping and to facilitate closing and hole opening operations by penetrating and holding a ceramic rod into mud during the calcination of the mud in a tap hole and providing a ceramic valve mechanism to the rear end of said rod. CONSTITUTION:The mud 3 is packed into the tap hole 2 and the ceramic rod 5 contg. a steel rod 4 as an arbor is driven into the mud 3 so as to be penetrated into and held in the mud during the calcination of the mud. The ceramic valve mechanism 7 is provided through a ceramic terminal pipe 8 to the rear end of the rod 5. Tapping is executed by inserting an oxygen lance pipe from the mechanism 7 into the pipe 8, melting the rod 4 to hollow the rod 5 and tapping the molten iron through the hollow part. The expansion of the tap hole during tapping is obviated by the chemical stability and wear resistance of the rod 5 to the molten iron and molten slag and the stable tapping is maintained.

10. 发明专利

JPS62227563A WATER MODEL EXPERIMENTAL APPARATUS FOR CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPS62227563A
公开(公告)日：1987-10-06
申请号：JP6943586
申请日：1986-03-27
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , HIROTA TETSUO , TANAKA SEIJIRO , KAWAKAMI TATSUO
IPC分类号： B22D11/14
摘要： PURPOSE:To improve an experimental accuracy by coinciding various phenomena in water flow with the actual molten steel flow, by allowing to coincide a nozzle for continuous casting and water vessel for the experiment in a model experimental apparatus for pouring hot wafer from a tundish to a mold with the actual dimensions and shapes. CONSTITUTION:In the water model experimental apparatus for pouring hot water by the water vessel 1 for the tundish, the nozzle 2 for the continuous casting arranged below this water vessel and the water vessel for the mold, the shapes and the dimensions of at least two of the nozzle for the continuous casting and the water vessel for the mold are allowed to coincide with those of the actual molten steel pouring apparatus. As the flow of the water model is allowed to coincide with the flow of the actual molten steel flow, the confirmation of the various phenomena is facilitated and the experimental accuracy is remarkably improved, as compared with the conventional reduced scale type.

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