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31. 发明专利

JPH09279216A BRICK PUSHING DEVICE FOR BRICK LAYING MACHINE FOR CONVERTER 失效
公开(公告)号：JPH09279216A
公开(公告)日：1997-10-28
申请号：JP8789096
申请日：1996-04-10
申请人： KAWASAKI HEAVY IND LTD , KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： SATO MASARU , INOUE EIJI , SUZUKI HAJIME , NAKAI TOSHIICHI
IPC分类号： C21C5/44 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To prevent slip-up of a brick on the wall surface in a furnace by generating the force pushed downward to the brick at the time of pushing the brick with a pushing device onto the inclined wall surface in the furnace. SOLUTION: Brick abutting mechanism 13 is provided in the pushing device for pushing the brick B with the adjacent brick to the wall surface in the furnace in succession, in the inner wall of a converter. In this case, a side surface abutting part 15 for pushing the brick to the peripheral direction of the converter is formed in the side part of the brick abutting mechanism and a bracket 17 hinging a pushing arm 18 so as to be freely turnable is formed at the upper part thereof. A horizontal direction pushing part 19 for pushing the brick substantially the diameter direction of the furnace is formed at the one end of the pushing arm and a downward pushing part 20 for pushing the brick substantially downward is formed at the other end, a coil spring 21 for turn-energizing the pushing arm 18 in the lift-up direction of the downward pushing part 20 is arranged.

32. 发明专利

JPH09277024A STRUCTURE OF REFRACTORY OF LADLE BOTTOM 失效
公开(公告)号：JPH09277024A
公开(公告)日：1997-10-28
申请号：JP9513596
申请日：1996-04-17
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SUZUKI TAKAO , HARUNA KAZUHIRO
IPC分类号： B22D41/02
摘要： PROBLEM TO BE SOLVED: To obtain the extension of service life by preventing float-up of permanent lining refractory constituting the bottom bed part of a ladle. SOLUTION: Recessing dowels 11 and projecting dowels 12 arranged on the mutually faced side surfaces at the front and rear direction of a lower step regular shaped bricks 7 are alternately fitted to construct the lower step permanent lining brick layer 13. Further, the recessing dowels 11 and the projecting dowels 12 arranged on the mutually faced side surfaces at the front and rear direction of a middle step regular shaped bricks 8 are alternately fitted to construct the middle step permanent lining brick layer 14. The projecting dowels 12 arranged in anchor regular shaped bricks 9 supported to an iron shell 1 through a round steel bars 15 arranged to the necessary position on the ladle bottom part are fitted to the recessing dowels 11 arranged at the lower step regular shaped bricks 7 and at the middle step regular shaped bricks 8, respectively.

33. 发明专利

JPH09269193A GITTER BRICK WITH BYPASS PASSAGE, STACKING METHOD THEREFOR, AND METHOD FOR REPAIRING BRICK MASONRY IN REGENENERATOR OF HOT BLAST STOVE 失效
公开(公告)号：JPH09269193A
公开(公告)日：1997-10-14
申请号：JP23066796
申请日：1996-08-30
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： FUJITA MASAO , ONO CHIKAO , AIZAWA KANJI , SATO YOSHICHIKA , KAMIYA TOSHIO , MASUMOTO SHINICHI , NANBU MASAO , NAKAJIMA MASAYOSHI , ISOZAKI TAKAHARU
IPC分类号： C21B9/02 , C21B9/10 , F17D1/04 , F27D1/00 , F27D1/04
摘要： PROBLEM TO BE SOLVED: To easily manufacture a hot blast stove while maintain a thermal efficiency of the hot blast stove and strength of a brick at high levels by contriving an arrangement of dowels and dowel holes on gitter bricks, which are stacked in an interior of a regenerator in the hot blast stove to serve as a medium of heat exchange between a high temperature gas and a cold air flow. SOLUTION: A brick body 7 is in the form of hexagonal column to be provided with six through holes 5 of circular cross section which extend between an upper surface 15 and a lower surface 16 and surround a central through hole 13. Vertical grooves 6 are provided on respective tops 18 of the brick body 7 and on side surfaces 14 intermediate between the respective pieces, and dowels 11 and dowel holes 12 for engagement of upper and lower bricks are provided on either ends of the through holes 5 on the upper surface 15 and the lower surface 16 with a spacing of 120 degrees. In order to provide communication between ends of those of the six through holes 5 which are not provided with the dowels 11 or the dowel holes 12, and ends of the three vertical grooves 6 adjacent to the ends of those through holes, common grooves 17 having a large width are cut as bypass passages and are set to have a depth in the range of 3 to 14% of the brick height.

34. 发明专利

JPH09241085A TUNDISH NOZZLE AND ITS PRODUCTION 失效
公开(公告)号：JPH09241085A
公开(公告)日：1997-09-16
申请号：JP4978096
申请日：1996-03-07
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SAITO MASANORI , YAMANE TOSHIO , TANAKA SEIJIRO
IPC分类号： C04B41/85 , C04B35/48 , C04B41/50
摘要： PROBLEM TO BE SOLVED: To provide a tundish nozzle which is easily and inexpensively producible, substantially prevents the destabilization of a base material and has high corrosion resistance and a process for producing the same as the tundish nozzle and the process for producing the same. SOLUTION: The calcined compact of the tundish nozzle essentially consisting of completely and/or partially stabilized zirconia is impregnated with a soln. which precipitates or dissociates unstabilized zirconia by heating. The open surface of the base material constituting particles is coated with the unstabilized zirconia by heating, by which the tundish nozzle substantially preventing the destabilization of the base material and having the high corrosion resistance is obtd. Since there is no need for forming two layers of moldings, the simple production is made possible and since the amt. of the unstabilized zirconia to be used is small, the inexpensive production is possible.

35. 发明专利

JPH09157044A ALUMINA-SPINEL PREPARED UNSHAPED REFRACTORY FOR TROUGH OF BLAST FURNACE 失效
公开(公告)号：JPH09157044A
公开(公告)日：1997-06-17
申请号：JP31333295
申请日：1995-11-30
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： ISOMURA KEIICHIRO , KUMAGAI MASATO , TAKAGI MASATO , KINO KATSUFUMI , MORI JUNICHIRO , TORITANI YASUNOBU
IPC分类号： C04B35/66 , F27D1/00 , F27D3/14
摘要： PROBLEM TO BE SOLVED: To ensure superior oxidation resistance by incorporating graphite subjected to hydrophilic treatment, fine alumina and magnesia powders each having a specified average particle diameter and alumina and/or spinel as aggregate. SOLUTION: Graphite powder subjected to hydrophilic treatment is prepd. by coating the surface of graphite with fine alumina or silica powder or crushing flake graphite into spheres having 10-200μm average particle diameter and an aspect ratio of 0.8-1.2. The prepd. graphite powder, fine alumina powder having about 0.3-75μm average particle diameter and fine magnesia powder having about 2-75μm average particle diameter provided with slaking resistance by surface coating with a hydrophilic inorg. material such as a silica sol are added to alumina and/or spinel as aggregate as a principal component by 3-20wt.%, 6-30wt.% and 2-20wt.%, respectively, are prescribed amts. of a dispersant such as sodium tripolyphosphate and a hardening agent such as alumina cement are further added if necessary. They are blended to obtain the objective prepared unshaped refractories.

36. 发明专利

JPH09141419A METHOD FOR EXECUTING MONOLITHIC REFRACTORY OF BED PART OF LADLE 失效
公开(公告)号：JPH09141419A
公开(公告)日：1997-06-03
申请号：JP29940495
申请日：1995-11-17
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： HARUNA KAZUHIRO , MAEDA TAKASHI , SUZUKI TAKAO
IPC分类号： B22D41/02 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To reduce the unbalanced damage of monolithic refractory of the bed part forming the inside refractory of a ladle and to prolong the service life of the repaired part for only the bed part. SOLUTION: At the time of repairing the bed part of the ladle 10 by using the monolithic refractory, firstly, the monolithic refractory layer on the whole bed part is formed by pouring the monolithic refractory on the bed part of the ladle 10 so as to obtain a prescribed thickness. Successively, a lightweight finned raising frame 4 is set from the upper part so as to cover a part in contact with molten metal where the damage is large in the bed part of the ladle while the monolithic refractory layer on the whole bed part unsolidified or pseudo-set and held in the floating state. Then, the monolithic refractory is additionally poured into the inside of this light finned raising frame 4, and vibration is applied to the monolithic refractory layer on the whole bed part and the raising monolithic refractory layer by using a vibrator to uniformly form the poured monolithic refractory layer. By this method, the unbalanced damage on the whole bed part is reduced and the repairing cost of the refractory on the bed part is saved.

37. 发明专利

JPH0995719A DEVICE FOR SPRAY-WORKING IRON TAPPING RUNNER 失效
公开(公告)号：JPH0995719A
公开(公告)日：1997-04-08
申请号：JP25433095
申请日：1995-09-29
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： SHINOHARA KOICHI , YAMAMOTO TETSUYA , KAWATE OSAMU , YOSHIMURA HIDEO , OKA HIROMICHI , MAEHARA SHINICHI , BABA SHINICHI
IPC分类号： B05D1/02 , C21B7/14 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To easily and continuously form a working lining by kneading spraying material press-fed with carrying air having a prescribed pressure and the added water with a swingable and slidable nozzle head and spraying to an iron tapping runner. SOLUTION: In a spraying material supplying device 2, the spraying material carried through a container bag 7 is separately incorporated into plural hoppers 201A, 201B in each use and supplied into a spraying gun 210 through each of screw feeders. This spraying material is press-fed to a spraying unit 30 with the carrying air having the prescribed pressure from an air compressor 5. In this spraying unit 30, the nozzle head 91 providing a nozzle 90 is freely turnable with a head turning device 80 and also, freely slidable with a head sliding device 60 and these devices are held with a spraying vehicle 1 composed of a carriage 22 providing a caterpillar pushing device 21 and multi-step boom 28. The spraying material is kneaded with a prescribed quantity of the adding water in a nozzle head 91 and sprayed to the iron tapping runner from the nozzle 90.

38. 发明专利

JPH0995715A METHOD FOR WORKING IRON TAPPING RUNNER 失效
公开(公告)号：JPH0995715A
公开(公告)日：1997-04-08
申请号：JP25432495
申请日：1995-09-29
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： SHINOHARA KOICHI , YAMAMOTO TETSUYA , KAWATE OSAMU , ISOZAKI TAKAHARU , YOSHIMURA HIDEO , KIDO YUKIHISA
IPC分类号： B05D1/02 , C21B7/14 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To work a working lining without developing explosive breakage, shrinkage crack during drying and solidifying by spraying an inexpensive spraying material on a running surface having a specific remained heat temp. SOLUTION: Flowing material is flowed into a bed part and wall parts corresponding to the outside of an iron tapping runner 301 through a molding frame and dried and solidified to form a prescribed thickness of a back lining 302. The spraying material obtained by kneading the adhesive powdery and granular material and water is sprayed to the bed part and the wall parts in the inside thereof so as to form a prescribed shape and dried and solidified to work the working lining 303 having a prescribed thickness. At the time of working this working lining 303, after stopping the iron-tapping, the spray of the spraying material is executed at 30-120 deg.C remained heat temp. on the runner surface. At this time, it is desirable that the solidified time of the spraying material is regulated to 1-3hr. By this method, the developments of the shrinkage crack at the low temp. and the crack at the further high temp. are prevented and the good working lining worked body can be obtd.

39. 发明专利

JPH0995710A SPRAY DEVICE FOR SPRAYING MATERIAL FOR FORMING IRON TAPPING RUNNER 失效
公开(公告)号：JPH0995710A
公开(公告)日：1997-04-08
申请号：JP25432995
申请日：1995-09-29
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： SHINOHARA KOICHI , YAMAMOTO TETSUYA , KAWATE OSAMU , YAMAZAKI SADAYUKI , OKA HIROMICHI , MAEHARA SHINICHI , KIDO YUKIHISA
IPC分类号： C21B7/14 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To easily and precisely execute the repairing of worn position in the inner surface of an iron tapping runner in a short time by holding a spraying nozzle head so as to be freely swung and slid at the time of spraying a spraying material for repairing to a bed part and wall parts of an iron tapping runner of a blast furnace. SOLUTION: A spray unit 30 is held to the tip part of a boom 28 fitted to a mobile carriage so as to be freely attached/detached with a chucking device 33. The nozzle head 91 is held to this spray unit 30 through a head rotating device 80 so as to be freely swung and slid. This nozzle head 91 is set to the spray starting position of the bed part and the wall parts of the iron tapping runner. The spraying material and the water are forcedly bed respectively from a material hose 11 and a water hose 12 to the inner hole of a nozzle 90 of the nozzle head 91, kneaded and injected from the tip part of the nozzle. At this time, while leveling the ununiformity of the spraying material in the spraying range by circularly swinging the nozzle 90, the spraying range is gradually moved and widened to apply a working lining to the damaged part of the bed part and the wall parts of the iron tapping runner.

40. 发明专利

JPH0971454A REFRACTORY AND ITS PRODUCTION 失效
公开(公告)号：JPH0971454A
公开(公告)日：1997-03-18
申请号：JP22627095
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： C04B35/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive refractory excellent in corrosive resistance, and further to provide a method for producing the refractory, capable of simply producing the refractory at a low cost. SOLUTION: This refractory is produced by dispersing fine solid particles having fire resistance in a liquid, and subsequently press-charging the formed slurry into pores 3 on the operation surface of a base material 1 to form a densified layer 4 comprising the fine solid refractory particles densely charged over a prescribed depth.

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