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1. 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.

2. 发明专利

JP2001131618A RESTORING METHOD OF SOLID REDUCING AGENT FILLING LAYER TYPE SMELTING REDUCTION FURNACE AT STOPPING OF BLASTING 失效
公开(公告)号：JP2001131618A
公开(公告)日：2001-05-15
申请号：JP31550199
申请日：1999-11-05
申请人： KAWASAKI STEEL CO
发明人： MIZUFUJI MASATO , MASUMOTO SHINICHI , TAKAHIRA TAKUYA , FUJIMURA TOSHIO , HARA YOSHIAKI
IPC分类号： C21B11/02 , F27B17/00
摘要： PROBLEM TO BE SOLVED: To shorten the restoring time of a furnace and also, to reduce the number of pipe seats. SOLUTION: Gaseous oxygen is blown into the furnace through respective blowing pipes from a molten metal tapping hole 10 and a lower stage tuyere 4 when the blasting into the furnace is stopped, and also, the gaseous oxygen is blown toward a virtual line 12 connecting the shortest distance between the molten iron tapping hole 10 and the lower stage tuyere 4 in the furnace from the two pipe seats 11a and 11b arranged at the furnace wall and forming a linear state with a plane view. A passage for remelting material is formed on the virtual line 12 by the combustion heat produced by this blowing, and the fused material solidified in the furnace is efficiently remelted.

3. 发明专利

JPH059527A PRODUCTION OF LOW-P PIG 失效
公开(公告)号：JPH059527A
公开(公告)日：1993-01-19
申请号：JP15929291
申请日：1991-07-01
申请人： KAWASAKI STEEL CO , KAWATETSU MINING
发明人： AIHARA TSUNEO , NIKO KIYOSUKE , MARUSHIMA HIROYA , WATANABE YOICHI , HASEGAWA TSUNEYA , ITAYA HIROSHI , KOMAMURA SEI , TAMURA NOZOMI , USHIJIMA TAKASHI , SATO KAZUHIKO , KUSAKABE TARO , TSUNAKAWA TORU , MASUMOTO SHINICHI , NAKAZAWA MANABU , SATO YUKIO , KATAYAMA EIJI
IPC分类号： C21B11/02
摘要： PURPOSE:To inexpensively and easily mass-produce low-P pig without using an electrolytic method or low-P carbonaceous material. CONSTITUTION:A carbonaceous material packed type smelting reduction furnace 1 having two-stage tuyeres 2, 3 is used and the gas temp. at the furnace top is kept at >=700 deg.C. Particulate metal oxides contg. >=20% FeO are blown into this furnace from the upper-stage tuyere 2. The dephosphorization reaction in the furnace is accelerated in this way and the P entering from the carbonaceous material and raw materials is evaporated and the vapor thereof is discharged together with the furnace top exhaust gases, by which the low-P pig is produced.

4. 发明专利

JP2001335857A DEVICE FOR REMOVING ZINC-CONTAINING DEPOSITION 失效
公开(公告)号：JP2001335857A
公开(公告)日：2001-12-04
申请号：JP2000157608
申请日：2000-05-29
申请人： KAWASAKI STEEL CO
发明人： HAMAKI MAKOTO , MIZUFUJI MASATO , MASUMOTO SHINICHI , TAKAHIRA TAKUYA
IPC分类号： B01D53/34 , B01D53/64 , C21C5/40 , C22B19/36 , F27D25/00 , F27D23/02
摘要： PROBLEM TO BE SOLVED: To provide a removing device for zinc-containing deposition with which the deposition on the inner wall around the inlet of a zinc recovering device for rapidly cooling gas containing zinc vapor with water, can efficiently be removed. SOLUTION: This device is provided in the zinc recovering device, in which the inlet for introducing the zinc-containing gas at the upper part of a vertical empty tower and a nozzle for spouting the water in the inner part are provided and the zinc-containing gas introduced with the spouted water is cooled and zinc is dropped and recovered. Then, the removing device is provided with a deposition removing member whose lower end is brought into contact with the inner wall around the inlet to remove the zinc-containing deposition on the inner wall surface, a supporting shaft which penerates a top plate of the empty tower and vertically supports the center of the deposition removing member, a turning means for turning the deposition removing member around the supporting shaft, and a raising/lowering means for vertically moving the deposition removing member.

5. 发明专利

JPH04235208A METHOD FOR CONTROLLING OPERATION OF BLAST FURNACE 失效
公开(公告)号：JPH04235208A
公开(公告)日：1992-08-24
申请号：JP120291
申请日：1991-01-09
申请人： KAWASAKI STEEL CO
发明人： KOKUBU HARUO , MASUMOTO SHINICHI
IPC分类号： C21B5/00
摘要： PURPOSE:To stably operate a blast furnace by accurately assuming ratio of ore layer thickness to the sum of the ore layer thickness and coke layer thickness in center part of the blast furnace with model equation and making this assumed value the specific value or less. CONSTITUTION:Based on blasting condition, charging wt. ratio of the ore and the coke and temp. and gas composition distribution in the radius direction just below deposited surface in furnace top, the layer thickness ratio of the ore and the coke in the radius direction is decided so that gas flowing velocity distribution obtd. from pressure gradient corresponds to gas flowing velocity distribution obtd. from carbon and oxygen balance. Then, the obtd. ratio of the ore layer thickness Lo at the furnace center to the total (Lo+Lc) of the ore and coke layer thickness is controlled to be

6. 发明专利

JP2002249812A OPERATING METHOD FOR DRY SMELTING FURNACE 失效
公开(公告)号：JP2002249812A
公开(公告)日：2002-09-06
申请号：JP2001050428
申请日：2001-02-26
申请人： KAWASAKI STEEL CO
发明人： UCHIYAMA TAKESHI , HARA YOSHIAKI , MASUMOTO SHINICHI
IPC分类号： C21B11/02 , C21B13/02
摘要： PROBLEM TO BE SOLVED: To provide a operating method for a dry smelting furnace capable of suppressing pH decrease of dust-collecting water and avoiding corrosion and wear of a dust-collecting machine, pipes, pumps, etc., even when exhaust gas from the dry smelting furnace for raw materials containing halogen such as fluorine and chlorine. SOLUTION: In this furnace operating method for recovering molten metal by blowing the raw material containing halogen into the dry smelting furnace having at least a plurality of two-staged upper and lower tuyeres for blowing high-temperature air into a filling layer of carbon solid reducing agent, soda ash slag and/or soda ash itself generated in another smelting step is charged from the furnace top of the dry smelting furnace.

7. 发明专利

JPH0931508A METHOD FOR REMOVING SLAG IN MOLTEN SLAG TROUGH FOR METALLURGICAL FURNACE 失效
公开(公告)号：JPH0931508A
公开(公告)日：1997-02-04
申请号：JP17901395
申请日：1995-07-14
申请人： KAWASAKI STEEL CO , SUMITOMO METAL IND , NIPPON KOKAN KK , KOBE STEEL LTD , MITSUI MIIKE MACHINERY CO LTD
发明人： FURUYA JUNICHI , MASUMOTO SHINICHI , SHIJIYOU HIDETOSHI , KONDO ATSUSHI , NAKATANI HIROSHI , TOMIOKA KOICHI , TOGO TAMIO , YAMAGATA HITOAKI , YOSHIDA TOSHIHIRO , UENO KENJI
IPC分类号： C21B7/14 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To efficiently execute the crush and the removal of slag in a trough by executing the rotation of drums in a specific condition, at the time of rotating one pair of parallel vertical drums fitting many edges in a special arrangement on the outer periphery in the molten slag trough. SOLUTION: One pair of parallel vertical drums 1a, 1b fitting many attached edges 2a, 2b in the spiral arrangement on the outer periphery are rotated in the molten slag trough 13 to crush and remove the slag in the trough. At this time, the relations among interval (d) of the attached edges 2a, 2b in the axial direction of each of the drums, pitch (p) of the attached edges in the circular direction of each of the drums, the number of revolution (n) of each of the drums, feeding velocity (v) in each of the drums, crushing slag size D and crushing torque T are beforehand obtd. related to the objective trough 13 and slag. The drums 1a, 1b are driven under condition, in which the crushed slag max. size D is the fixed size or less and the crushing torque T becomes the min. Then, it is desirable to be in the range of 10-200mm (d), 100-400mm (p), 100-250rpm (n), 1-1.5m/min (v) and 50-150mm D. By this method, the crushed slag is made to fine grain so as to execute the suction and the cleaning.

8. 发明专利

JPH06330117A METHOD FOR OPENING TAPPING HOLE IN BLAST FURNACE 失效
公开(公告)号：JPH06330117A
公开(公告)日：1994-11-29
申请号：JP12121593
申请日：1993-05-24
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , HIRANO JUNKICHI
IPC分类号： C21B7/12
摘要： PURPOSE:To enable the selection of the optimum drill, metallic rod, etc., in accordance with blast furnace condition by evaluating tapping information till the previous iron tapping of a tapping hole in the blast furnace in each evaluating section and deciding the opening hole vol. in the tapping hole based on the tapping condition at the previous time obtd. by this evaluation. CONSTITUTION:The tapping holes in the blast furnace are opened in order by using the drill and the metallic rod in a hole opening machine. At this time, the tapping information till the previous tapping of the tapping hole in this blast furnace is divided into eight items composed of a tapping velocity pattern, initial stage slag balance, max. remaining slag quantity in the tapping, slag balance at the time of completing the tapping, necessary time of starting slagging, slag stopping caused by clogging of the hole (two or more times) and tapping velocity after three times, etc., made to form the pattern in each item and made to form the table for evaluating sections. Successively, the previous iron tapping condition is applied to the evaluating sections in the above table. Based on the condition grasped by this information, by considering this information in each item, the diameters of the drill and the metallic rod fitted to the hole opening machine matched to the blast furnace condition are selected.

9. 发明专利

JP2003171722A OPERATING METHOD OF SMELTING REDUCTION FURNACE 审中-公开
公开(公告)号：JP2003171722A
公开(公告)日：2003-06-20
申请号：JP2001375384
申请日：2001-12-10
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , TAKAHIRA TAKUYA , MATSUI TAKASHI , HARA YOSHIAKI
IPC分类号： C22B5/10 , C21B11/02
摘要： PROBLEM TO BE SOLVED: To provide a smelting reduction furnace operating method which can grasp the temperature of an upper stage raceway more correctly than a conventional method, and realize a stable operation. SOLUTION: In this smelting reduction furnace operating method in which a raw material containing powder and granular metal oxide is blown from at least an upper stage tuyere to manufacture a molten metal in a smelting reduction furnace having a tuyere divided into at least two stages of upper and lower stages which blows high-temperature oxygen-enriched air in a filled layer of a carbon solid reducing agent, the raceway temperature before the upper stage tuyere is measured by a non-contact type thermometer while temporarily stopping the blowing of the raw material into the upper stage tuyere, and the calorie supply to the upper stage tuyere is adjusted by changing the oxygen-enriched quantity of the hot air blown from a lower stage tuyere so that the measured temperature becomes below the preset target value. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2002294317A METHOD FOR OPERATING SMELTING REDUCTION FURNACE 失效
公开(公告)号：JP2002294317A
公开(公告)日：2002-10-09
申请号：JP2001097618
申请日：2001-03-29
申请人： KAWASAKI STEEL CO
发明人： MATSUI TAKASHI , HARA YOSHIAKI , MASUMOTO SHINICHI , TAKAHIRA TAKUYA
IPC分类号： C22B5/10 , C21B11/02
摘要： PROBLEM TO BE SOLVED: To secure a stable operation by preventing occurrence of a bridging. SOLUTION: In a method for operating a smelting reduction furnace for producing molten metal by injecting powdery and granular metallic oxide- containing raw material into the smelting reduction furnace 1 having tuyeres 1u, 1s that are arranged in at least two stages for blowing high temperature oxygen-enriched air into a filling layer 3 of carbon-based solid reducing agent from at least the upper stage tuyere 1u, a target value of the temperature in a raceway at the upper stage tuyere 1u is set with a calculation so as to obtain the stable operation. Operation of the furnace is controlled so that the raceway temperature obtained by this calculation at the upper stage tuyere 1u becomes the above target value.

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