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    • 72. 发明专利
    • Method for recovering metal from copper and iron mixed scrap
    • 从铜和铁混合切片回收金属的方法
    • JP2009185369A
    • 2009-08-20
    • JP2008029327
    • 2008-02-08
    • Osaka UnivSumitomo Metal Ind Ltd住友金属工業株式会社国立大学法人大阪大学
    • YAMAMOTO TAKAIKUMATSUKURA YOSHITOKUSATO HIROTAKAOHASHI YOSHIHISATANAKA TOSHIHIRONAKAMOTO MASASHIYOSHIKAWA TAKESHI
    • C22B7/00C21B11/02C22B9/02C22B15/00
    • Y02P10/214Y02P10/22Y02P10/234Y02P10/236
    • PROBLEM TO BE SOLVED: To provide a new method for efficiently recovering metals from copper and iron mixed scrap, based on a two-phase separating method. SOLUTION: In a molten material by melting the copper and iron mixed scrap in a furnace, this molten material is made to be the two liquid phases of the molten copper phase and the molten iron phase by melting carbon; when the copper and the iron are separately recovered by separating into the two-liquid phases, the furnace for melting the copper and iron mixed scrap is made to be a carbonaceous material filling-up layer type melting furnace and the carbonaceous material having 20-70 mm average grain diameter is used as the filling-up layer in this melting furnace. It is desirable that the carbonaceous material is coke. and it is desirable that the tuyere in the melting furnace is two steps. Further, it is desirable that the carbonaceous concentration in the molten iron phase is ≥4 mass% and/or sulfur concentration is ≤0.05 mass%, and the copper and iron mixed scrap can contain valuable metals. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种基于两相分离方法从铜和铁混合废料中有效回收金属的新方法。 解决方案:通过在炉中熔化铜和铁混合废料,在熔融材料中,通过熔化碳将该熔融材料制成熔融铜相和铁水相的两个液相; 当通过分离成双液相分别回收铜和铁时,将铜和铁混合废料熔化的炉子做成含碳材料填充层型熔炉,碳质材料为20-70 mm平均粒径用作该熔化炉中的填充层。 优选碳质材料为焦炭。 并且期望熔炉中的风口是两个步骤。 此外,铁水相中的碳质浓度优选为≥4质量%和/或硫浓度为0.05质量%以下,铜和铁混合废料可以含有有价值的金属。 版权所有(C)2009,JPO&INPIT
    • 73. 发明专利
    • TREATMENT METHOD OF WASTE
    • JP2006226670A
    • 2006-08-31
    • JP2006044251
    • 2006-02-21
    • SUMITOMO METAL IND
    • YAMAMOTO TAKAIKUSATO HIROTAKAMATSUKURA YOSHITOKU
    • F23G5/24B09B3/00F23G5/02F23G5/44
    • PROBLEM TO BE SOLVED: To provide a treatment method and a treatment device of waste capable of solving a problem arising from the control of a filling time into a furnace and the upper end surface position of the waste. SOLUTION: A waste treatment furnace has a furnace body; a gas discharge port arranged at the upper part of the furnace body; a discharge port for molten slag and/or a molten metal arranged at the lower part of the furnace body; a waste charging port arranged between the discharge port for the molten slag and/or the molten metal and the gas discharge port; a furnace center lance arranged on the upper part of the furnace body along the furnace axis, for blowing combustion supporting gas downward into the furnace; one or more upper tuyeres arranged on the furnace wall between the waste charging port and the gas discharge port; and one or more tuyeres arranged on the furnace wall between the waste charging port and the discharge port for the molten slag and/or the molten metal. When raising the temperature of the waste treatment furnace, a charcoal material wherein the total concentration of included halogen is 0.1 mass% or less is charged into the waste treatment furnace, and the height level of the upper end surface of the charged material inside the waste treatment furnace is adjusted from a temperature raising stage. COPYRIGHT: (C)2006,JPO&NCIPI
    • 75. 发明专利
    • METHOD FOR MELTING TINNED STEEL SHEET SCRAP
    • JPH0987718A
    • 1997-03-31
    • JP24926595
    • 1995-09-27
    • SUMITOMO METAL IND
    • ISHIDA HIROAKIITO YOSHIKIYAMAMOTO TAKAIKU
    • C21B11/02C21B11/00
    • PROBLEM TO BE SOLVED: To produce a low Sn molten iron for producing a high quality steel from a Sn plated steel sheet scrap having a low bulk density. SOLUTION: A cylindrical furnace 1 provided with an opening part 2 at the upper part, primary tuyeres 3 at the furnace bottom part and/or the lower furnace wall and secondary tuyeres 4 at the upper furnace wall, is used. After forming coke packing layer 7 from the furnace bottom to a level containing the primary tuyeres and packing layer 8 mainly containing the scrap(SC) on the upper part thereof to a level containing the secondary tuyeres, combustion assist gas or this gas and fuel from the primary tuyeres and the combustion assist gas from the secondary tuyeres are blown. Loosely packed tinned steel sheet scrap is used at least in a part of SC, and melted while controlling secondary combustion rate by adjusting the combustion assist gas quantity blown from the secondary tuyeres. By this method, exhaust gas having high calorific value can be recovered while producing the molten iron having a low Sn content available for production of the high quality steel in one set of the furnace.
    • 78. 发明专利
    • PRODUCTION OF MOLTEN IRON
    • JPH0480312A
    • 1992-03-13
    • JP19324090
    • 1990-07-20
    • SUMITOMO METAL IND
    • UJISAWA MASARUYAMAMOTO TAKAIKUISHIDA HIROAKI
    • C21B11/02
    • PURPOSE:To stabilize furnace heat with low unit consumption of fuel and combustion assist gas and to produce molten iron with high productivity by blowing the combustion assist gas while controlling flow rate of the combustion assist gas and the oxygen concn. in the gas blown from secondary tuyeres in accordance with kind of raw material layer in front of the secondary tuyeres. CONSTITUTION:The kind of raw material in packed layer in front of the secondary tuyere 4 during operating is discriminated. When the packed layer in front of the secondary tuyere 4 is scrap 6-1 and iron ore 6-2, the flow rate of combustion assist gas blown from the secondary tuyere 4 is increased to the set value. When the packed layer in front of the secondary tuyere 4 is coke, the flow rate of combustion assist gas blown from the secondary tuyere 4 is made to the set value or lower, and if necessary, by adjusting the oxygen concn. in the combustion assist gas, the secondary combustion flame temp. is controlled in the temp. range of 1,000 - 1,400 deg.C. By this method, iron-making operation having a great deal of flexibility is executed. At the time of practically executing this operation, the flow rate of secondary combustion assist gas and the oxygen concn. in this are desirable to control with on-line control with a computer.
    • 79. 发明专利
    • METHOD FOR MEASURING LAYER HEIGHT OF CHARGE IN SMELTING FURNACE
    • JPH03291320A
    • 1991-12-20
    • JP9285390
    • 1990-04-06
    • SUMITOMO METAL IND
    • YAMAMOTO TAKAIKUISHIDA HIROAKIUJISAWA MASARUHANAZAKI KAZUHARU
    • C21B11/00C21B5/00C21B7/24
    • PURPOSE:To measure the layer height of the charge in a furnace with good accuracy over the entire surface and to stabilize an operation by using a specific weight having a large-diameter base in a sounding method and imparting a falling impact to the charge in the furnace by this weight. CONSTITUTION:The weight W which is larger in diameter Dw by 1/2 times than the min. diameter of the furnace and is smaller in the max. exclusive possession diameter DwMAX in the case of rotating around a hanging point than the min. diameter of the furnace is hung down and is inserted and dropped from the aperture 2 of the cylindrical furnace 1. The impact larger than the impact force imparted when a weight of 200kg/cm is dropped by gravity from 2m height is imparted to the charge in the furnace. The scaffolding and cavities in the furnace are eliminated in this way and the ruggedness and inclination on the front surface of the charge in the furnace are leveled off. In addition, a change in the tension of a wire R is detected. The local scaffolding remains in many cases if the diameter Dw is below the above-mentioned value. The putting of the weight into and out of the furnace are hindered if the sum DwMAX of the Dw and the displacement in the lower part of the wire R is above the above-mentioned value. The falling and leveling off of the scaffolding are not possible if the impact value is below the above-mentioned impact force.
    • 80. 发明专利
    • APPARATUS AND METHOD FOR PRODUCING MOLTEN IRON
    • JPH03207805A
    • 1991-09-11
    • JP218290
    • 1990-01-09
    • SUMITOMO METAL IND
    • UJISAWA MASARUYAMAMOTO TAKAIKUISHIDA HIROAKI
    • C21B11/02
    • PURPOSE:To prevent the development of blowing-through during operation and to efficiently produce molten iron by setting tuyeres at upper and lower steps on furnace wall having opening part at the upper part at an equal interval, respectively zigzag type vertically and blowing combustion supporting gas and fuel, respectively. CONSTITUTION:In the cylindrical furnace 1 having the opening part 2 for charging the raw material and discharging gas at top part of the furnace, the primary tuyeres 3 at the lower furnace wall and the one or plural steps of secondary tuyeres 4 at the upper furnace wall are arranged. In the above cylindrical type apparatus for producing molten iron, the above tuyeres 3, 4 are set at the equal central angle of 360/n ((n) is number of the tuyeres at each step) in the direction of circumference of the furnace, respectively. Further, the whole tuyeres 3, 4 on the furnace wall are set in the zigzag type having the equal central angle of 360/N (N is number of the whole tuyeres) in the circumference direction in the plane view for the cylindrical type furnace 1. In the above furnace 1, coke packing layer 7 from the furnace bottom to the level including the primary tuyeres 3 and scrap and iron ore packing layer 8 at the upper part thereof to the level including the secondary tuyeres 4, are formed. Successively, the combustion supporting gas and the fuel from the primary tuyeres 3 and the combustion supporting gas from the secondary tuyeres 4 are blown, respectively. By this method, gas stream in circumference direction in the furnace, is uniformized.