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    • 61. 发明专利
    • Waste disposal method
    • 废物处理方法
    • JP2006208003A
    • 2006-08-10
    • JP2006044253
    • 2006-02-21
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • YAMAMOTO TAKAIKUSATO HIROTAKAMATSUKURA YOSHITOKU
    • F23G5/44F23G5/24
    • PROBLEM TO BE SOLVED: To provide a waste disposal method capable of solving a problem of (f) charge of a toxic waste, out of (a) blocking in a duct, (b) a filling time into a furnace, (c) discharge of unused carbon, (d) control of an upper face position of a waste, (e) material recycle of halogens, (f) the charge of the toxic waste or (g) internal pressure rise in a liquid sump. SOLUTION: When the waste is charged into the waste disposal furnace to perform at least one of treatments of burning, gasification and melting, the waste is sealed in a seal container, and the seal container is charged into the waste disposal furnace, via a charger having two valves provided in series to a waste feed passage for charging the waste into the furnace, for supplying the seal container to a space between the outer side valve and the inner side valve under the condition where the outer side valve is opened and where the inner side valve is closed, and for charging the seal container into the furnace by opening the inner side valve after closing the outer side valve. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够解决(f)有毒废物的充电的问题的废物处理方法,(a)管道堵塞,(b)到炉内的填充时间, c)排放未使用的碳,(d)控制废物的上表面位置,(e)卤素的物质再循环,(f)有毒废物的收费或(g)液体池中的内部压力升高。

      解决方案:当废物被装入废物处理炉中进行燃烧,气化和熔化处理中的至少一种时,将废物密封在密封容器中,将密封容器装入废物处理炉中, 通过具有两个阀的充电器,该阀具有与废料进料通道串联设置,用于将废物装入炉中,用于在外侧阀打开的条件下将密封容器供应到外侧阀和内侧阀之间的空间 并且其中内侧阀关闭,并且通过在关闭外侧阀之后打开内侧阀来将密封容器装入炉中。 版权所有(C)2006,JPO&NCIPI

    • 62. 发明专利
    • DETECTION OF FURNACE TEMPERATURE DROP IN BLAST FURNACE
    • JPH11323412A
    • 1999-11-26
    • JP13643398
    • 1998-05-19
    • SUMITOMO METAL IND
    • UJISAWA MASARUYAMAMOTO TAKAIKU
    • C21B5/00C21B7/24
    • PROBLEM TO BE SOLVED: To provide a method for detecting furnace temperature drop caused by abnormality of reaction in the blast furnace which is necessary for maintenance management of stable operation of the blast furnace. SOLUTION: A molten iron temp. is culculated by using momentary operation datum while modifying a reaction rate in the furnace of a blast furnace mathematical model so that reaction amount in the furnace calculated by inputting the momentary operation datum to the blast furnace mathematical model, in which reaction rates of main reactions generating in the blast furnace (indirect reducing reaction of an ore, hydrogen reducing reaction of the ore and direct reducing reaction of the ore) are taken into consideration, coincides with actual reaction amount in the furnace calculated by further reading-in actual furnace gas information (furnace gas composition). The molten iron temp. culculated by using momentary operation datum is compared with the molten iron temp. culculated from a theoretical reaction rate obtained by inputting momentary conditions of charges, blast conditions and furnace body heat conduction conditions to the blast furnace mathematical model. When difference between both molten iron temps. is recognized, it is judged that furnace temperature drop occurs.
    • 63. 发明专利
    • METHOD FOR MELTING TINNED STEEL PLATE SCRAP
    • JPH09263811A
    • 1997-10-07
    • JP7179396
    • 1996-03-27
    • SUMITOMO METAL IND
    • ISHIDA HIROAKIYAMAMOTO TAKAIKUITO YOSHIKI
    • C21C5/28C21B11/00C21B11/02C21C5/56
    • PROBLEM TO BE SOLVED: To provide a melting method of tinned steel plate, by which calory (latent heat) contained in exhaust gas can be improved without increasing average secondary combustion ratio and high tin-removing efficiency can be achieved. SOLUTION: In the melting method of steel scrap (SC), a cylindrical furnace 1' provided with tuyeres at a furnace wall part in the lower part of the furnace, and further, at a furnace bottom part, and after forming a coke packing layer 9' to the level containing the tuyere from the furnace bottom part and the steel scrap (SC) packing layer 10 on the upper part thereof, combustible gas is blown from the tuyere. As the steel scrap (SC), non-tinned steel (SC) 10-2 and tinned steel plate (SC) 10-1 are used, and preceding to the non-tinned steel (SC) 10-2, the tinned steel plate (SC) 10-1 is packed and the tinned steel plate (SC) 10-1 is held between the coke packing layer 9' and the non-tinned steel (SC) 10-1 and melted. The cylindrical furnace can be provided with secondary tuyeres at the upper furnace wall part. While producing molten iron having low tin content available to production of a high grade steel with one set of the melting furnace, the exhaust gas having high calory can be recovered. Dust containing concd. SnO2 in the exhaust gas can efficiently be utilized as a tin source.
    • 64. 发明专利
    • PRODUCTION OF MOLTEN IRON
    • JPH09217105A
    • 1997-08-19
    • JP2355396
    • 1996-02-09
    • SUMITOMO METAL IND
    • ITO YOSHIKIISHIDA HIROAKIYAMAMOTO TAKAIKU
    • C21B11/02
    • PROBLEM TO BE SOLVED: To provide a production method of molten iron which can control calory in byproduct gas. SOLUTION: A coke packing layer 6 from the furnace bottom of a cylindrical furnace 1 to a level containing primary tuyeres 3 and a packing layer 7 of scrap, ore and solid shape industrial waste on this coke packing layer and further, the coke packing layer 6 thereon are alternately formed in plural layers. Assist combustible gas and fuel and/or powdery industrial waste are blown from the primary tuyeres 3 to execute heating reduction and melting. Further, at the time of producing the molten iron and slag by blowing the assist combustible gas from secondary tuyeres 4 to secondarily burn gas in the furnace, the secondary combustion ratio is controlled by adjusting the ratio of the assist combustible gas quantity in each tuyere, and the ratio of the assist combustible gas and the fuel and/or the powdery industrial waste in the primary tuyeres 3 is adjusted to control the calory of the byproduct gas. By this method, the flexible production of the pig iron and the byproduct gas can be executed. Then, the reductions of waste quantity and unit fuel cost are accomplished by effectively utilizing the iron, combustible material and ash in the industrial waste and also, the available byproduct gas can be obtd.
    • 65. 发明专利
    • METHOD FOR CONTINUOUSLY CASTING THIN CAST SLAB
    • JPH06182516A
    • 1994-07-05
    • JP35507492
    • 1992-12-17
    • SUMITOMO METAL IND
    • KANAZAWA TAKASHIYAMAMOTO TAKAIKU
    • B22D11/124B22D11/128B22D11/22
    • PURPOSE:To prevent internal crack by executing the rolling reduction with rolls at the upper surface side of a cast slab arranged just below a mold and making the cooling rate on the upper surface of the cast slab more than the cooling rate on the lower surface of the cast slab at the rolling reduction position. CONSTITUTION:At first, the rolling reduction is executed to a cast slab 2 obtd. by pouring a molten metal into the mold 3 and passing it through this mold at the rolling reduction zone. Cylinders 9, 10 arranged in a static zone succeeding to a rolling reduction zone are used supplementally to perfectly execute the rolling reduction. A cooling section where cooling rate is different between the upper surface and the lower surface is arranged over both of the rolling reduction zone and the static zone. The suitable cooling rate ratio of the upper surface to the lower surface of the cast slab is set to be 3:2-2:1. In the case of being 3:2 or below this cooling rate ratio, the cooling rate of the upper surface of the cast slab 2 is so insufficient that the preventing effect for the internal crack is reduced. On the other hand, in the case of being 2:1 or higher, the temp. difference between the upper surface and the lower surface of the cast slab 2 is so excessive that the surface crack caused by trapezoid deformation is easily developed.
    • 69. 发明专利
    • PRODUCTION OF PIG IRON
    • JPH04193903A
    • 1992-07-14
    • JP32820890
    • 1990-11-27
    • SUMITOMO METAL IND
    • ISHIDA HIROAKIYAMAMOTO TAKAIKUUJISAWA MASARU
    • C21B11/02
    • PURPOSE:To concentrate and recover a lead component and a zinc component in dust in an exhaust gas and to recover an iron component as a pig iron by injecting the dust from tuyeres in the production of the pig iron using a cylindrical furnace. CONSTITUTION:Based on the pig iron producing method with the cylindrical furnace 1, the dust is injected from primary tuyeres 3 and secondary tuyeres 4. By injecting the dust from the primary tuyeres 3, Fe component is reduced in a strong reducing atmosphere and also Zn and Pb components are reduced and vaporized. The dust injected from the secondary tuyeres 4 is lowered to a coke packed layer 7, and by becoming high temp. and strong reducing atmosphere, the reduction and vaporization are developed similarly. Since the dust is injected as the powdery-state, wide reaction zone area and fast reducing reaction speed are obtd. Reduced iron is lowered to the lower part of the reaction furnace and recovered as the pig iron. Zn and Pb are sucked into the exhaust gas and concentrated in the dust and recovered as the concd. dust.
    • 70. 发明专利
    • APPARATUS AND METHOD FOR PRODUCING MOLTEN IRON
    • JPH03150309A
    • 1991-06-26
    • JP28673589
    • 1989-11-02
    • SUMITOMO METAL IND
    • YAMAMOTO TAKAIKUISHIDA HIROAKIUJISAWA MASARUIKEMIYA HIROYUKI
    • C21B11/02
    • PURPOSE:To allow tapping which is not too high or too low from the target output of a molten iron by tilting a cylindrical furnace which is charged with raw materials from the throat in the upper part and taps the molten iron from the tap hole in the bottom, and thereby storing a prescribed volume of the molten iron in the pouring basin formed in the bottom. CONSTITUTION:Gases are discharged from the throat 2 in the upper part of the cylindrical furnace 1 and the raw materials are charged into the furnace to form a coke packed bed 7 in the lower part and a packed bed 8 of iron ore and scrap in the upper part. The molten iron is produced by blowing a combustion supporting gas and fuel from primary tuyeres 3 in the lower part and a combustion supporting gas is blown from secondary tuyeres 4 in the upper part. The molten iron is tapped from the tap hole 5 in the bottom and slag is discharged from a slag discharge port 10. The cylindrical furnace 1 of the above-mentioned apparatus for producing the molten iron is tilted by a tilting device 6 and the stagnating volume of the molten iron in the pouring basin part 11 below the horizontal line connecting the bottom end edge of the tap hole 5 and the bottom end edge of the slag discharge port 10 is maintained at >=2 times the fluctuation range quantity of the molten iron output per charge. The charge quantity in terms of the pig iron of the raw materials is set at the quantity obtd. by adding the fluctuation range quantity of the molten iron output to the target output per charge and the tapping rate is adjusted by the above-mentioned stagnating molten iron.