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11. 发明专利

JPH0278890A APPLYING TECHNIQUE OF AMORPHOUS REFRACTORY 失效
公开(公告)号：JPH0278890A
公开(公告)日：1990-03-19
申请号：JP23074388
申请日：1988-09-14
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： GOTOU YASUZOU , NAKAJIMA MASAYOSHI
IPC分类号： F27D1/00 , F27D1/16
摘要： PURPOSE:To shorten an applying time, make the cut of joint hard and improve a resistance to corrosion by a method wherein the powder of refractory is forced into a place to be filled, such as a gap between a tuyere and a nozzle member or a cracked part in an industrial furnace for example, while extracting air in the place. CONSTITUTION:A supporting tool 3 is inserted into a tuyere 1 from the outside of a vessel and a pressing plate 32 is inserted from the inside of the vessel in a condition that a bolt 33 is inserted into a nozzle member 2, then, a nut 35, screwed to the bolt 33 from the tip end thereof, is tightened to attached the nozzle member 2 to the tuyere together with the supporting tool 3. Thereafter, the powder of dry type amorphous refractory, mixed with binder, is forced by an injection machine 6 through a hose 8 connected to a joint unit 36. An injection port 34, communicated with the joint unit 36, is positioned near the internal periphery of the turyere 1 and, therefore, a gap formed between the nozzle member 2 and the tuyere 1 is filled with the injected powder of refractory while air is pushed out of a venting valve 9 attached to a valve mounting unit 37. The powder of refractory is filled by the pressure of the injector 6 and is solidified so as to have a predetermined strength.

12. 发明专利

JPS63230810A METHOD FOR LAYING CHECKER BRICK IN REGENERATOR OF HOT BLAST STOVE 失效
公开(公告)号：JPS63230810A
公开(公告)日：1988-09-27
申请号：JP6659187
申请日：1987-03-20
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： MIYAGAWA SABURO , MATSUO AKIRA , NAKAJIMA MASAYOSHI , UMAFUNE TAKUZOU
IPC分类号： C21B9/02
摘要： PURPOSE:To stabilize construction of regenerator by eliminating use of small- sized brick, by constituting circumferential part of wall face for laying checker brick by a brick having unequal side hexagonal section, which lengths of faced two sides are longer than lengths of the other four sides. CONSTITUTION:In the brick laying constructing a regenerator of a hot blast stove, the main part of the checker bricks lays up silicons refractories 1 having equal side hexagonal section. The outer circumferential part of the brick laying uses the bricks 3 having unequal size hexagonal section, which lengths of faced two sides are longer than lengths of the other four sides and cuts the unnecessary part and the brick laying is executed to there. By this method, as laying up of the small-sized bricks conventionally used is eliminated, drop-out of the brick caused by expansion, shrinkage or vibration by changing of temp. distribution is not occurred at the time of operating the hot blast stove. Further, efficiency of the work is improved.

13. 发明专利

JPS6256354A GRAPHITE-CONTAINING REFRACTORY BRICK 失效
公开(公告)号：JPS6256354A
公开(公告)日：1987-03-12
申请号：JP24846885
申请日：1985-11-05
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SATO TSUTOMU , TAKEBAYASHI HIROSUKE , NAKAJIMA MASAYOSHI , MUROI MASANORI , KOIDE YOSHIHARU , URAGAMI KANICHIROU , HASEGAWA SUSUMU , SHINTANI HIROTAKA , KAWAKAMI TATSUO
IPC分类号： C04B35/622 , C04B35/00 , C04B35/04 , C04B35/043 , C04B35/10 , C04B35/103 , C04B35/44 , C04B35/443 , C04B35/52

14. 发明专利

JPS61273236A DURABLE CASTING MOLD 失效
公开(公告)号：JPS61273236A
公开(公告)日：1986-12-03
申请号：JP11484985
申请日：1985-05-28
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： ARIMOTO TAKESHI , HIROE YOSHINORI , SUZUKI NISAKU , TANI TOSHIRO , HAGIWARA NOBORU , NAKAJIMA MASAYOSHI , FUNATO KATSUAKI
IPC分类号： B22C1/18
摘要： PURPOSE:To improve the casting surface of a casting by compounding a suitable amt. of phosphoric acid binder with refractory raw material powder to form a durable casting mold and drying the mold thereby permitting the repeated use of the durable casting mold with high strength and decreasing the gas to be generated in the stage of casting a molten metal. CONSTITUTION:About 20-90wt% phosphoric acid binder such as aluminum phosphate and magnesium phosphate is compounded and kneaded with the ordinary refractory raw material powder such as alumina or zircon and the mixture is molded by ordinary rammer molding, casting, etc. and is dried. The resulted durable casting molds 5, 7 have the high strength and can be repeatedly used. The gas to be generated from the casting mold during casting of the molten metal is decreased and the casting surface of the casting is good.

15. 发明专利

JPS61253310A PREVENTING METHOD FOR STICKING OF SPLASH IN VESSEL FOR MOLTEN METAL 失效
公开(公告)号：JPS61253310A
公开(公告)日：1986-11-11
申请号：JP9487385
申请日：1985-05-02
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： SUZUKI TAKAO , OTANI HISAFUMI , TAKEBAYASHI HIROSUKE , NAKAJIMA MASAYOSHI , MUROI MASANORI , URAGAMI KANICHIROU
IPC分类号： C21C1/06 , F27D25/00
摘要： PURPOSE:To effectively prevent the sticking of splashes to the inside wall surface of a vessel for a molten metal by providing through-holes to the ceiling part of the inside wall surface of the vessel and ejecting gas therethrough. CONSTITUTION:A through-hole unit 150 is formed on the outside wall layer 12 in the ceiling part of a torpedo ladle car, etc., by arraying plural rows of the through-holes to the bottom surface of refractory bricks 15 forming the inside wall surface. The gas such as N2 is supplied from a supply pipe 158 into the unit 150 in the stage of blowing a treating material by a carrier gas through the pipe into the molten iron in the torpedo ladle car. The gas is ejected from the holes 15 toward the surface of the molten iron to prevent the sticking of the various splashes from the molten iron surface onto the ceiling part. The time and labor required heretofore for removing the splashes and further the heat loss are decreased by the above-mentioned method.

16. 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.

17. 发明专利

JPH05330931A THERMAL SPRAYING REPAIRING MATERIAL 失效
公开(公告)号：JPH05330931A
公开(公告)日：1993-12-14
申请号：JP16045992
申请日：1992-05-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , TANABE YOICHI , NAKAJIMA MASAYOSHI
IPC分类号： B22F1/00 , C04B35/66 , F27D1/16
摘要： PURPOSE:To obtain a thermal spraying repairing material having a strong adhesiveness between a formed sprayed layer and a furnace surface even in case of a low temperature, e.g. 600 deg.C, of a damaged part (a part to be repaired) of a furnace, without decreasing a working circumstance owing to little noise in spraying and excellent in workability. CONSTITUTION:2-20wt.% metallic silicon powder having

18. 发明专利

JPH0477358A ALUMINA-CARBON BASE NON-CALCINED REFRACTORY 失效
公开(公告)号：JPH0477358A
公开(公告)日：1992-03-11
申请号：JP19229990
申请日：1990-07-19
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SATO TSUTOMU , SHINTANI HIROTAKA , OGUCHI MASAO , NAKAJIMA MASAYOSHI , MUROI MICHINORI
IPC分类号： C04B35/043 , C04B35/04 , C04B35/10 , C04B35/103
摘要： PURPOSE:To increase the slug resistance property by adding the specified quantity of a magnesia-chrominum based raw material into an alumina-carbon base refractory. CONSTITUTION:This refractory incorporates 3-70wt.% of the magnesia-chrominum based raw material in the refractory blended with the alumina based raw material and the carbon base raw material. Generally, the magnesia-chrominum based raw material has the chemical formula expressed by Mg(Fe)>>[Al,Fe,Cr2O3]O. This compound forms easily a solid solution with alumina and has the residual linear expanding property accompanying 5-10% of the volume expansion. Thus, a crack at a joint at the time of cooling the furnace is hardly produced in the wall of the furnace consisting of piled bricks, and the falling of the bricks caused by the crack at the joint and also the infiltration of the molten iron and steel into the joining parts are avoided, thus the occurrence of unexpected trouble caused by the abnormal damage of the metallurgical furnace caused by the refractory is prevented. When the adding quantity of the magnesia-chrominum based raw material is base than a lower limit, the improvement of the corrosion resistance and the effect on the increase in the residual linear expansion are insufficient and in the case of exceeding an upper limit, the strength after utilizing for a long period is reduced.

19. 发明专利

JPH0388763A PRODUCTION OF CARBON-CONTAINING FIREBRICK 失效
公开(公告)号：JPH0388763A
公开(公告)日：1991-04-15
申请号：JP22665089
申请日：1989-08-31
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SATO TSUTOMU , SHINTANI HIROTAKA , KAWAKAMI TATSUO , NAKAJIMA MASAYOSHI , MUROI MASANORI
IPC分类号： C04B35/103 , C04B35/10
摘要： PURPOSE:To obtain carbon-contg. firebrick having a high rate of residual expansion and hardly causing the gapping of a joint by adding Al and Si in a specified ratio to magnesia, alumina and carbon, blending and kneading them with thermosetting resin, molding and heat-treating the kneaded material. CONSTITUTION:A blend consisting of 2-20 pts.wt. magnesia of 0.5-3.0mm grain size such as electromelted magnesia, 30-93 pts.wt. alumina such as sintered alumina, 3-50 pts.wt., preferably 5-40 pts.wt. carbon such as graphite or coke,

20. 发明专利

JPH01308860A CARBON-CONTAINING REFRACTORY 失效
公开(公告)号：JPH01308860A
公开(公告)日：1989-12-13
申请号：JP14117688
申请日：1988-06-07
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SATO TSUTOMU , SHINTANI HIROTAKA , KAWAKAMI TATSUO , NAKAJIMA MASAYOSHI , MUROI MASANORI
IPC分类号： C04B35/00 , C04B35/04 , C04B35/043 , C04B35/10 , C04B35/103
摘要： PURPOSE:To improve oxidation resistance, spalling resistance, hot strength, wear resistance, corrosion resistance, etc., by blending a carbon-containing refractory material having a specific composition with Al, MgAl alloy and Si in a specific ratio. CONSTITUTION:100 pts.wt. mixture comprising (A) 3-50wt.% carbon material (preferably scaly graphite having low impurity content and

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