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71. 发明专利

JPS59145729A Method for extending life of lance for stirring molten metal 失效
标题翻译：用于延长金属丝的生命寿命的方法
公开(公告)号：JPS59145729A
公开(公告)日：1984-08-21
申请号：JP1886183
申请日：1983-02-09
申请人： Nippon Kokan Kk
发明人： SHIRATANI YUUSUKE , MATSUDA YASUHIRO , KOMATSU YOSHIMI , USUI TSUTOMU , KOBAYASHI MOTONOBU , TAKAHASHI TATSUTO , KITAMURA MINORU , KATOU KAZUYOSHI
IPC分类号： C21C1/02 , B22D1/00 , C21C5/46 , C21C5/56 , C21C7/072
CPC分类号： B22D1/005
摘要： PURPOSE:To prevent the generation of the crack in the covering refractories of a lance for stirring a molten metal and to extend the life of the lance in the stage of using said lance by heat-insulating or heating the lance after the treatment. CONSTITUTION:A molten metal is stirred and refined by using a lance 3 for stirring a molten metal consisting of a metallic pipe 7 having a gas passage hole 7' and refractories 8 covering the outside circumference thereof. The lance 3 drawn into the atmosphere after the treatment is housed into a heat insulating vessel 10. The vessel 10 consists of a shell 11 and a heat insulating material 12 and is provided with a burner 15 for heating. The lance 3 is thus insulated in terms of heat and if necessary the lance is heated to prevent the decrease in the surface temp. of the lance 3 and to decrease the temp. difference between the inside and outside surface of the refractories 8, by which the generation of the crack and stripping in the refractories 8 is prevented and the service life of the lance 3 is extened.
摘要翻译：目的：为了防止在用于搅拌熔融金属的喷枪的覆盖耐火材料中产生裂纹，并且在处理之后通过绝热或加热喷枪在使用所述喷枪的阶段中延长喷枪的寿命。构成：通过使用用于搅拌由具有气体通道孔7'的金属管7和覆盖其外圆周的耐火材料8组成的熔融金属的喷枪3搅拌和精炼熔融金属。在处理后被吸入大气中的喷枪3容纳在绝热容器10中。容器10由壳体11和绝热材料12构成，并且设置有用于加热的燃烧器15。因此，喷枪3在热量方面是绝缘的，并且如果需要，喷枪被加热以防止表面温度的降低。的喷枪3，并降低温度。在耐火材料8的内外表面之间的差异，防止在耐火材料8中产生裂纹和剥离，延长喷枪3的使用寿命。

72. 发明专利

JPS59145726A Cooling method of lance for stirring molten metal 失效
标题翻译：用于冲击金属的冷却方法
公开(公告)号：JPS59145726A
公开(公告)日：1984-08-21
申请号：JP1885883
申请日：1983-02-09
申请人： Nippon Kokan Kk
发明人： SHIRATANI YUUSUKE , MATSUDA YASUHIRO , KOMATSU YOSHIMI , USUI TSUTOMU , KOBAYASHI MOTONOBU , TAKAHASHI TATSUTO , KITAMURA MINORU , KATOU KAZUYOSHI
IPC分类号： C21C1/02 , B22D1/00 , C21C5/46 , C21C5/56 , C21C7/072
CPC分类号： B22D1/005
摘要： PURPOSE:To extend the service life of a lance for stirring a molten metal and to reduce the cost ratio thereof in the stage of using said lance by spraying mist in the metallic pipe of the lance after the treatment thereby preventing the temp. rise of the lance. CONSTITUTION:A molten metal is stirred and refined by using a lance 3 for stirring a molten metal consisting of a metallic pipe 7 having a gas passage hole 7, and refractories 8 which cover the outside circumference of said pipe and of which the part corresponding to a slag line and the part at the bottom end are formed larger in outside diameter than the other parts. Mist is sprayed in the pipe 7 after said treatment to prevent the temp. rise of the lance 3. The mist spraying is preferably accomplished by spraying mist of about 50-100 gas- water ratio by a small diameter full cone tip to cool efficiently the pipe. The difference in thermal expansion between the refractories 8 and the pipe 7 is thus decreased and the generation of the crack and peeling in the refractories and the bend, etc. of the pipe 7 is prevented, whereby the service life of the laence 3 is extended.
摘要翻译：目的：为了延长搅拌熔融金属的喷枪的使用寿命，并且在处理之后通过在喷枪的金属管中喷雾而使用所述喷枪的阶段降低其成本比，从而防止温度升高。长矛的崛起。构成：通过使用用于搅拌由具有气体通过孔7的金属管7组成的熔融金属的喷枪3和覆盖所述管的外周的耐火材料8来搅拌和精炼熔融金属，并且其中对应于炉渣线和底端部分的外径比其他部分形成得更大。在所述处理之后，在管道7中喷雾，防止温度降低。喷枪3的上升优选通过用小直径全锥形喷头喷雾约50-100个气 - 水比的雾来实现喷雾，以有效地冷却管道。因此耐火材料8与管7之间的热膨胀差异减小，并且防止了管7的耐火材料的龟裂和剥离和弯曲等的产生，从而延长了格栅3的使用寿命。

73. 发明专利

JPS59145721A Cooling method of lance for stirring molten metal 失效
标题翻译：用于冲击金属的冷却方法
公开(公告)号：JPS59145721A
公开(公告)日：1984-08-21
申请号：JP1885383
申请日：1983-02-09
申请人： Nippon Kokan Kk
发明人： SHIRATANI YUUSUKE , MATSUDA YASUHIRO , KOMATSU YOSHIMI , USUI TSUTOMU , KOBAYASHI MOTONOBU , TAKAHASHI TATSUTO , KITAMURA MINORU , KATOU KAZUYOSHI
IPC分类号： C21C1/02 , B22D1/00 , C21C5/46 , C21C5/56 , C21C7/072
CPC分类号： B22D1/005
摘要： PURPOSE:To extend the service life of a lance for stirring a molten metal used in stirring and refining of the molten metal and to reduce the cost ratio thereof by feeding liquefied gas into said lance from the upper or lower part after the treatment thereby cooling the lance. CONSTITUTION:A lance 3 for stirring a molten metal formed by covering a metallic pipe 7 having a gas passage hole 7' with refractories 8 is immersed in the molten iron 4 in a ladle 1 and gas and a flux are blown therein to generate gas bubbling 6, whereby the molten iron 4 is stirred and refined. Liquefied gas is fed into the lance 3 from the upper or lower part thereof after the treatment to cool the lance, by which the difference in thermal expansion between the pipe 7 and the refractories 8 is decreased and the generation of the crack and stripping in the refractories 8 and the bend, etc. of the pipe 7 is prevented. N2, O2, air, Ar or the like is used as the liquefied gas. Ar or the like heavier than air is fed into the pipe 7 from the upper part and N2 or the like lighter than air is fed therein from the lower part.
摘要翻译：目的：为了延长喷枪的使用寿命，用于搅拌熔融金属搅拌和精炼过程中使用的熔融金属，并通过从处理后的上部或下部送入液化气体来降低成本比，从而冷却槊。构成：用于将通过用耐火材料8覆盖具有气体通道孔7'的金属管7形成的熔融金属的喷枪3浸没在钢包1中的铁水4中，并且将助熔剂吹入其中以产生气体鼓泡 6，由此使铁水4被搅拌和精制。在处理之后，将液化气体从其上部或下部进料到喷枪3中以冷却喷枪，由此管7和耐火材料8之间的热膨胀差减小，并且产生裂纹和汽提耐火材料8和管7的弯曲等被防止。使用N 2，O 2，空气，Ar等作为液化气体。比空气重的Ar等从上部供给到管道7中，并且从下部向其中供给比其中空气更轻的N 2等。

74. 发明专利

JPS59145718A Blowing method of gas in nozzle for refining molten metal 失效
标题翻译：用于精炼金属的喷嘴中的气体吹塑方法
公开(公告)号：JPS59145718A
公开(公告)日：1984-08-21
申请号：JP1962283
申请日：1983-02-10
申请人： Nippon Kokan Kk
发明人： HANMIYOU MASAYUKI , SHIRATANI YUUSUKE , HASEGAWA TERUYUKI , TANMURA YOUICHI , HIRAGA NORIYUKI , TAKAHASHI TATSUTO , KITANI FUKUICHI
IPC分类号： C21C5/48 , C21C5/35
CPC分类号： C21C5/35 , Y02P10/143
摘要： PURPOSE:To extend the service life of a bottom blowing tuyere and to reduce the cost of the gas used by using the gas contg. a large amt. of non-oxidative gas or reducing gas as the stirring gas to be blown from the bottom after the mid-period of combined blowing. CONSTITUTION:Gas contg. 40-100vol% non-oxidative gas such as Ar, N2 or the like and/or reducing gas such as CO, methane, propane or the like is used as the stirring gas to be blown after the mid-period of blowing in a combined blowing method wherein oxygen is top blown with an upper lance 7 to the molten iron 5 and slag 6 in a converter 1 consisting of a shell 2 and refractories 3 and the stirring gas is blown from the tuyere 4 in the bottom, whereby the wear of the tuyere 4 is suppressed while the cost of the stirring gas is taken into consideration and the service life of the tuyere is made at least equivalent to the life of the converter. It is further preferable for the decreased temp. of the tuyere 4 hence decreased wear thereof to increase the cooling capacity by blowing the stirring gas to be blown after the mid-period of blowing at a rate of 1-3 times the rate of blowing before the mid-period of blowing.
摘要翻译：目的：延长底吹风口的使用寿命，降低使用气体的气体成本。一个大的的非氧化性气体或还原气体作为从组合吹制的中期后期从底部吹出的搅拌气体。构成：气体使用40-100vol％的非氧化性气体如Ar，N 2等和/或诸如CO，甲烷，丙烷等的还原气体作为在组合的中期吹入之后被吹送的搅拌气体吹出方法，其中用顶部喷枪将氧气顶吹到铁水5和由壳体2和耐火材料3组成的转炉1中的炉渣6，搅拌气体从底部的风口4吹出，在考虑搅拌气体的成本的同时抑制风口4，并且使风口的使用寿命至少等于转炉的使用寿命。进一步优选降低温度。因此风口4的磨损降低，从而通过在吹制中期之前以吹送速率的1-3倍的速度吹入吹送搅拌气体来提高冷却能力。

75. 发明专利

JPS58126912A PREVENTING METHOD OF TEMPERATURE DROP IN SPLIT TYPE REFINING FURNACE 失效
公开(公告)号：JPS58126912A
公开(公告)日：1983-07-28
申请号：JP944482
申请日：1982-01-26
申请人： NIPPON KOKAN KK
发明人： USUI TSUTOMU , KITANI FUKUICHI , TAKAHASHI TATSUTO
IPC分类号： C21C1/00 , C21C1/06 , C21C5/00 , C21C5/32 , C21C7/00 , F27B3/04
摘要： PURPOSE:To minimize the temp. drop in an upper tank after disconnection of a lower tank and to prevent heat loss and the damage of refractories in a split type refining furnace by covering the opening surface of the upper tank with a cap upon ending of refining. CONSTITUTION:In refining the molten iron contained in a lower tank 2 by using a split type refining furnace, the opening surface 1B in the lower part of an upper tank 1 is covered with a cap 12 so as to be shielded from the atmospheric air after the tank 2 is disconnected from the tank 1 upon ending of refining. Or when blowing of gas is finished and no more gases are generated, the opening surface 1A in the upper part of the tank 1 is covered with a cap 13 and after the tank 2 is disconnected, the surface 1B of the tank 1 is covered with the cap 12. Then, the radiation of heat from the tank 1 after the end of the refining is eliminated and heat loss and the damage of refractories are prevented. In the case of leaving the tank 1 to stand by until the next refining, the temp. drop of the tank 1 is minimized.

76. 发明专利

JPS577366A IMMERSION NOZZLE FOR CONTINUOUS CASTING 失效
公开(公告)号：JPS577366A
公开(公告)日：1982-01-14
申请号：JP8025380
申请日：1980-06-16
申请人： NIPPON KOKAN KK
发明人： KITANI FUKUICHI , TAKAHASHI TATSUTO , TAKAHASHI TADAAKI
IPC分类号： C04B35/48 , B22D11/10 , B22D41/50
摘要： PURPOSE:To provide an immersion nozzle which prevents local abrasion owing to the percolation of molten powder by disposing the zirconia-graphite base mixture compounded with a silica source and a binder in the part to be in contact with the molten molding power of a nozzle body, then molding and calcining the same. CONSTITUTION:65-95wt% Zirconia,

77. 发明专利

JPS53138907A SEPARATING METHOD FOR MOLTEN SLAG AND MOLTEN STEEL AT TAP HOLE OF CONVERTER 失效
公开(公告)号：JPS53138907A
公开(公告)日：1978-12-04
申请号：JP5320877
申请日：1977-05-11
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TADAAKI , KAWAKAZU TAKAO , TAKAHASHI TATSUTO
IPC分类号： C21C5/46
摘要： PURPOSE:To prevent the molten slag from intermingling into the ladle from the converter, by blowing an inert gas into the molten steel from the surroundings of the tap hole of the converter and, at the same time, by closing the tap hole with the slide plate according to the measured value of the radiation energy from the outflow stream.

78. 发明专利

JP2001251987A MATERIAL TO BE SUNK IN WATER AND METHOD FOR PRODUCING THE SAME 失效
公开(公告)号：JP2001251987A
公开(公告)日：2001-09-18
申请号：JP2000069253
申请日：2000-03-13
申请人： NIPPON KOKAN KK
发明人： KATO MAKOTO , ISOO NORIO , TAKAHASHI TATSUTO , NAKAJIMA HIROHISA
IPC分类号： A01K61/00 , C04B28/08 , C04B28/10 , C04B40/02 , C04B41/50 , E02B3/14
摘要： PROBLEM TO BE SOLVED: To obtain a material to be sunk in water which is the material obtained by solidifying a raw material containing a noncarbonated calcium such as a slag with carbonic acid, and utilizing a body solidified with the carbonic acid, having a secured large surface area, and excellent in strength and stability in the water (fixing stability). SOLUTION: This material to be sunk in the water is obtained by binding the raw material arranged around a core material and containing the noncarbonated calcium with CaCO3 formed by a carbonation reaction of the noncarbonated calcium as a binder to form a covering layer covering the surface of the core material. The material to be sunk in the water is produced, for example, by arranging a pipe body having plural gas-permeating holes penetrating the pipe body wall, at a proper interval, in a packed bed packed with the noncarbonated calcium-containing raw material, feeding carbon dioxide gas to the pipe body to allow the gas to be ejected from the gas-permeating holes, and to solidify the noncarbonated calcium-containing raw material present at the vicinity of the pipe body.

79. 发明专利

JP2000144689A BLOCK COMPACT FOR CHANNEL 失效
公开(公告)号：JP2000144689A
公开(公告)日：2000-05-26
申请号：JP33344098
申请日：1998-11-09
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TATSUTO , ISOO NORIO , KATO MAKOTO , TANABE HARUYOSHI
IPC分类号： E02B5/02
摘要： PROBLEM TO BE SOLVED: To provide a block compact for a channel capable of forming the channel amiable to organisms without giving an adverse effect to the living environment of animals and plants unlike a concrete channel and excellent in water permeability. SOLUTION: This compact is mainly made of the slag generated in the steel manufacturing process. The powdery and/or granular slag used as a main raw material is consolidated to form the compact while CaCO3 generated by the carbonation reaction of CaO mainly contained in the slag is used as a binder. When this compact is used for a channel, the pH of water in the channel is not increased, it is effective for embedding and growing aquatic plants, and the water in the channel can infiltrate into the ground because the channel has proper water permeability.

80. 发明专利

JPH11193516A IMMERSION STONE MATERIAL FOR FRESHWATER AREA SUCH AS RIVER, AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH11193516A
公开(公告)日：1999-07-21
申请号：JP29141298
申请日：1998-09-29
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TATSUTO , KATO MAKOTO , NAKAJIMA HIROHISA , ISOO NORIO , FUKUHARA MINORU
IPC分类号： A01K61/00 , C04B5/00 , C04B5/06 , C04B7/147 , C04B28/08 , C04B40/02 , E02B3/00
摘要： PROBLEM TO BE SOLVED: To provide an immersion stone material for freshwater area such as rivers that is made by using slug produced during steel making processes at its material and being free from creating a problem such as rise of pH in river water while being capable of developing superb effectiveness, when immersed or laid underwater for forming riverbed stone materials or fishway stone materials, for forming living spaces for fishes or ensuring movability for underwater creatures. SOLUTION: In stone materials 4a, 4b and 4c made up by using slug produced during steel making processes and an additive added as occasion demands as principal materials, the slug is composed of one or more kinds of slugs selected out of those including powdery and granular slug, coarse and fine grainlike slug, and the slug is conglomerated with CaCO3 formed by carbonation or CaCO3 and MgCO3 used as a binder. The method is such that the principal materials are heaped up or filled in under a desired density and with carbonic oxidation reaction produced to the heaped-up or filled-in materials with carbon dioxide being existent, the slug is treated to consolidate in the fine grainlike or the coarse grainlike state, and thereby the stone materials 4a, 4b and 4c wherein the slug is lumped are obtained.

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