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1. 发明专利

JP2000157958A RECOVERING METHOD OF ORGANIC MATTER AND INORGANIC MATTER FROM WASTE 失效
公开(公告)号：JP2000157958A
公开(公告)日：2000-06-13
申请号：JP33362098
申请日：1998-11-25
申请人： NIPPON KOKAN KK
发明人： OKADA TOSHIHIKO , ASANUMA MINORU , SHIKADA TSUTOMU , ARIYAMA TATSURO , YASUOKA HIDENORI , SUMIKAMA TAKASHI
IPC分类号： B09B5/00 , B29B17/02 , C10G1/10
摘要： PROBLEM TO BE SOLVED: To efficiently recover org. matter such as plastic and inorg. matter such as metal from a metal resin composite waste in which many kinds of materials such as plastic, fiber and metals are mixed. SOLUTION: The device is constituted of a heat treating tank 1 for separating the metal and resin composite waste with treating liq. and a mechanism for separating by gravity the org. matter and the inorg. matter formed at the heat treating tank 1 and for discharging and recovering the org. matter floated on the liq. surface and the inorg. matter settled in liq. from the heat treating tank 1, and the bottom wall 9 of the heat treating tank 1 is inclined downward from the one end side provided at a supply port toward the other end side provided at a discharge port.

2. 发明专利

JPH11323360A METHOD FOR RECOVERING POLYMER COMPONENT FROM WASTE PLASTIC 失效
公开(公告)号：JPH11323360A
公开(公告)日：1999-11-26
申请号：JP29633598
申请日：1998-10-19
申请人： NIPPON KOKAN KK
发明人： OKADA TOSHIHIKO , ASANUMA MINORU , SHIKADA TSUTOMU , ARIYAMA TATSURO , YASUOKA HIDENORI , KUSUMOTO KOJI , SUMIKAMA TAKASHI
IPC分类号： B09B3/00 , B09B5/00 , B29B17/00 , B29B17/02 , C08J11/06 , C08J11/08 , C08J11/16 , C10L5/48
摘要： PROBLEM TO BE SOLVED: To efficiently separate an inorganic material-bearing waste polymer into an inorganic material and a polymer component by heating an organic medium having a specified boiling point and an aromatic index at a specified temperature not higher than the boiling point, immersing the inorganic material- bearing waste polymer to separate the polymer component and other components from each other, and further separating the organic medium. SOLUTION: The method comprises heating an organic medium having a boiling point of 300 deg.C or over and an aromatic index of 0.2 or over, which includes, for example, a coal tar-based heavy oil, a pitch, a coal liquefied oil, petroleum vacuum residues from specific types of oils (rich of aromatic components such as of Kafji oil), an ethylene bottom oil, a reformed oil, an FCC oil or the like, to 200 to 400 deg.C, but to a temperature not higher than the boiling point thereof, and immersing an inorganic material-bearing polymer (e.g. a disused car), preferably in the form of a shredder dust, in the medium, thereby separating the inorganic material, the polymer component and the organic medium, from one another. It is preferred to contain a plastic decomposing catalyst in the organic medium.

3. 发明专利

JPH11229012A STRUCTURE FOR ARRANGING STAVE IN SHAFT FURNACE TYPE METALLURGICAL FURNACE 失效
公开(公告)号：JPH11229012A
公开(公告)日：1999-08-24
申请号：JP4893198
申请日：1998-02-13
申请人： NIPPON KOKAN KK
发明人： SUMIKAMA TAKASHI , IINO BUNGO , SAKAI ATSUSHI , ARAKI TSUNEO , MATSUURA MASAHIRO , TERADA KANEO , GOCHO MAKOTO
IPC分类号： C21B7/10
摘要： PROBLEM TO BE SOLVED: To keep the durability of a stave in a shaft furnace type metallurgical furnace, to restrain the heat loss through the stave as little as possible and further, to reduce the equipment cost needed to the stave, etc. SOLUTION: This arranging structure of the staves, with which the long service life of the stave in the whole furnace and the energy saving with the restraint of heat conduction through the stave and the cost reduction on the equipment and the operation can be achieve by optimally arranging the staves in each zone according to the difference of the surrounding condition, is found out under the attension to the point, in which the large difference is developed in the surrounding at the inside of the furnace wall in the furnace height direction. In the furnace height direction, in the upper part and middle part zone (A) of the furnace with the small heat load, the cast iron-made staves are arranged, and in the lower part zone (B) of the furnace, with the large heat load at lower than the above zone (A), the copper or copper alloy-made staves are arranged, and in the lowermost zone (C) in the furnace at lower than the above zone (B), the cast iron-made staves or the copper or copper alloy-made staves are arranged.

4. 发明专利

JPH0563522B2 失效
公开(公告)号：JPH0563522B2
公开(公告)日：1993-09-10
申请号：JP9632684
申请日：1984-05-16
申请人： NIPPON KOKAN KK , ASAHI GLASS CO LTD
发明人： SUMIKAMA TAKASHI , IZUMI MASARO , SAITO HIROSHI , TSUCHIMOTO YOSHIHIRO , TAKESA KAZUHIKO
IPC分类号： C21B5/00 , C21B7/24

5. 发明专利

JPH0489311A PRODUCTION OF GYPSUM 失效
公开(公告)号：JPH0489311A
公开(公告)日：1992-03-23
申请号：JP20357290
申请日：1990-07-31
申请人： NIPPON KOKAN KK
发明人： MIZUSAWA MASATOSHI , SUMIKAMA TAKASHI , MIYAKE MINORU
IPC分类号： C01F11/46
摘要： PURPOSE:To efficiently obtain gypsum having a relatively low content of water by converting milk of lime having absorbed gaseous SO2 into a gypsum slurry, swirling the slurry in a stationary vessel and separating solid from liq. after concentration. CONSTITUTION:Gaseous SO2 is firstly absorbed into milk of lime in a gaseous SO2 absorption tower in the gaseous SO2 absorption stage 10. The milk of lime having absorbed gaseous SO2 is oxidized to obtain a gypsum slurry in the oxidation stage 12. The slurry is then concentrated in the concentration stage 14 (centrifugal separation). At this time, the slurry is swirled in a stationary vessel to remove the light components in the slurry. The concentration is preferably performed so that the gypsum content of the concentrated surry is controlled to 45-55wt.%. The gypsum is separated from the concentrated slurry by a centrifugal separator, etc., in the separation stage 16, and gypsum is produced.

6. 发明专利

JPH049419A METHOD FOR CONTROLLING SILICON CONTENT IN MOLTEN IRON 失效
公开(公告)号：JPH049419A
公开(公告)日：1992-01-14
申请号：JP10873990
申请日：1990-04-26
申请人： NIPPON KOKAN KK
发明人： AOKI TAICHI , INABA YUZURU , TARUMI YOSHIHIKO , SUMIKAMA TAKASHI
IPC分类号： G01N33/20 , C21C1/04
摘要： PURPOSE:To automatically and adequately control an Si content by measuring the Si content in a molten iron and charging the desiliconizing agent of the amt. corresponding thereto into the molten iron. CONSTITUTION:The consumption unit D of the desiliconizing agent is determined by a means 31 for computing the consumption unit of the desiliconizing agent in accordance with the temp. of the molten iron 12 from a measuring probe 20 and the Si content computed by a means 30 for computing the Si value from an Si sensor output. On the other hand, a tapping rate is computed in a computing means 32 by the weight of the molten iron detected with a load cell 22. The charging rate of the desiliconizing agent is determined by a computing means 33 from the tapping rate and the above-mentioned consumption unit D. The opening degree of a valve 35 having a proportional relation with the above-mentioned charging rate is regulated by the charging rate of the desiliconizing agent with a flow rate regulator 34. Compressed air 35 is sent into a desiliconizing agent tank 37 at the flow rate meeting the opening degree of the valve 35. The desiliconizing agent proportional to this flow rate is fed into the molten iron 12 via a charging lance 38, by which the Si content to be fed in the molten iron 12 is controlled.

7. 发明专利

JPH042709A INSTRUMENT FOR CONTINUOUSLY MEASURING TEMPERATURE OF MOLTEN IRON 失效
公开(公告)号：JPH042709A
公开(公告)日：1992-01-07
申请号：JP10167290
申请日：1990-04-19
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI
IPC分类号： C21B5/00 , F27D19/00 , G05D23/27
摘要： PURPOSE:To automatically detect variation of emissivity and to measure temp. of molten iron with high accuracy by measuring temp. at tip part in a protecting tube submerged into the molten iron with a radiation thermometer and correcting this output with the measured temp. with a consumable type R thermocouple. CONSTITUTION:The hemisphere-shaped tip part of radiation thermometer composed of a detecting head 5, connecting tube 6 and the protecting tube 7 is submerged into the molten iron 2 flowing down in an iron tapping trough 1. This radiation thermometer detects the temp. at the tip part in the above protecting tube 7 and this is processed with a signal processing circuit 10 to output the temp. signal. This temp. signal is recorded with a recorder 11 and also, the molten iron temp. is calculated with a computer 12 based on the above output and the prescribed correction factor. In the above molten iron temp. continuously measuring instrument, based on the output of the above radiation thermometer and the molten iron temp. measured with the consumable type R thermocouple 13, the above correction factor is corrected and the corrected correction factor is used to execute calculation of the molten iron temp. By this method, regardless of the variation of emissivity of the molten iron 2 and the protecting tube 7, the temp. of molten iron 2 can be measured with high accuracy.

8. 发明专利

JPH03249109A INSTRUMENT FOR MEASURING REMAINING SLAG QUANTITY IN BLAST FURNACE 失效
公开(公告)号：JPH03249109A
公开(公告)日：1991-11-07
申请号：JP4576390
申请日：1990-02-28
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI
IPC分类号： C21B7/24
摘要： PURPOSE:To enable high accurate measurement by providing a probe inserted into furnace center from a tuyere in a blast furnace, a means for detecting the inserted position and thrust and an arithmetic means for obtaining remaining slag quantity from this output to estimate the remaining slag quantity. CONSTITUTION:This measuring instrument for remaining slag quantity in the blast furnace is formed with a probe inserted toward the furnace center from the tuyere in the blast furnace, the means for detecting this inserted position and the thrust, and the arithmetic means. In the above-mentioned arithmetic means, the output of means for detecting the above-mentioned thrust, etc., is inputted and based on the developing position of a variation point in the detected thrust, the remaining slag quantity in the blast furnace is obtd.

9. 发明专利

JPH03240910A MOLTEN IRON TAPPING HOLE IN SMELTING REDUCTION FURNACE 失效
公开(公告)号：JPH03240910A
公开(公告)日：1991-10-28
申请号：JP3570990
申请日：1990-02-16
申请人： NIPPON KOKAN KK
发明人： MATSUBARA SHINJI , KAWADA HITOSHI , SUMIKAMA TAKASHI
IPC分类号： C21B11/02
摘要： PURPOSE:To prevent clogging of a molten iron tapping hole and to smoothen iron tapping and slag tapping works by arranging a brick body in inner part of a smelting reduction furnace, forming the molten iron tapping hole in there and extending inlet end of the molten iron tapping hole to furnace center direction. CONSTITUTION:In the smelting reduction furnace 1 for executing the smelting reduction to iron series metal oxide with carbonaceous material, the brick body 5 forming extended hole of the molten iron tapping hole 4 in there, is set at the molten iron tapping hole 4 part in the furnace. By this constitution, the inlet end 6 of the above molten iron tapping hole 4 is extended to the furnace center direction. Then, it is desirable to arrange the above brick body 5 so that the above inlet end 6 positions to 0.5-1.0R (wherein, R is radius at the furnace bottom) from the wall in the furnace. By this method, the slag tapping time is made to early and the clogging of the molten iron tapping hole 4 caused by solidification of the slag 11 is prevented and the iron tapping and the slag tapping work can be smoothened.

10. 发明专利

JPH03212486A METHOD FOR PREVENTING CARBON FROM STICKING TO INNER WALL OF CARBONIZATION CHAMBER IN COKE OVEN 失效
公开(公告)号：JPH03212486A
公开(公告)日：1991-09-18
申请号：JP892090
申请日：1990-01-18
申请人： NIPPON KOKAN KK
发明人： YAMATE YOSHITOMO , SUMIKAMA TAKASHI , KATO YUZO
IPC分类号： C10B43/02
摘要： PURPOSE:To prevent carbon from sticking to the inner wall part of the upper space and improve coke oven operating efficiency and coke gas yield by blowing a gas containing CO2 and H2O into the upper spatial part of a carbonization chamber in carbonizing coal and reducing the atmospheric temperature. CONSTITUTION:For example, part of a combustion waste gas is taken from the middle of a flue 4 with a conduit 5 and passed through a gas blowing port (8a) or (8b) provided in the top wall 6 or a sidewall 7 of the coke side into the upper spatial part (2a) of a carbonization chamber 2. CO2 and H2O in the blown waste gas are brought into contact with carbon sticking to the inner wall of the upper spatial part (2a) to cause exothermic reaction producing CO. Thereby, the atmospheric temperature is reduced by about 100 deg.C to prevent the carbon from sticking to the inner wall. CO-containing gases produced by the aforementioned reaction are passed through a riser 9 and recovered. Furthermore, any gas containing CO2 and/or H2O at a relatively low temperature may be used as the gas blown into the upper spatial part (2a). Blast furnace gas, etc., are further used.

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