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1. 发明专利

JPH09132470A THERMAL SPRAYING REPAIRING MATERIAL 失效
公开(公告)号：JPH09132470A
公开(公告)日：1997-05-20
申请号：JP31719495
申请日：1995-11-10
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： MITSUI HARUO , KISHI TADAKATSU , NAKAJIMA MASAYOSHI , YAMAZAKI SADAYUKI , TANABE YOICHI , YUMOTO TOSHIHIDE , ANDO TAKESHI , TAKAHIRA TAKUYA , KASAOKA HARUKI
IPC分类号： C04B35/66 , C10B29/06
摘要： PROBLEM TO BE SOLVED: To safely repair the refractor wall of a furnace, etc., by theraml spraying with good adhesion and without lowering the strength of the applied body. SOLUTION: This thermal spraying repairing material is hot-supplied into a gaseous oxygen current to melt a refractory powder by the combustion of metallic silica, and repairing is conducted. The material contains 10-30wt.% metallic silicon in total and contains 5-10wt.% metallic silicon having

2. 发明专利

JP2003166008A METHOD AND DEVICE FOR SUBSTITUTING GAS IN EXHAUST-GAS TREATMENT APPARATUS ACCOMPANYING MELTING/REDUCING FURNACE 审中-公开
公开(公告)号：JP2003166008A
公开(公告)日：2003-06-13
申请号：JP2001364620
申请日：2001-11-29
申请人： KAWASAKI STEEL CO
发明人： TAKAHIRA TAKUYA , AIZAWA KANJI , MIZUFUJI MASATO
IPC分类号： C21B11/02 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for substituting gas in an exhaust- gas treatment apparatus accompanying a solid reducing-agent-charged type melting/reducing furnace, which can substitute the gas in a system for a short time, give little load on a forced draft fan for blowing air in order to prepare a work environment for inspection or the like, and do not endanger an operation of the melting/reducing furnace, during inspection or the like. SOLUTION: This method comprises, when substituting the gas in the exhaust- gas treatment apparatus 10 of the solid reducing-agent-charged type melting/ reducing furnace 1, introducing the substitution gas from a gas introduction nozzle 35 of the above exhaust-gas treatment apparatus so that a pressure in the furnace top of the solid reducing agent-charged-type smelting reduction furnace can not become positive, and absorbing/exhausting the substitution gas introduced from the above gas introduction nozzle, in a bleed screw 21 installed in a flue which couples the above exhaust-gas treatment apparatus with the above melting/reducing furnace. COPYRIGHT: (C)2003,JPO

3. 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.

4. 发明专利

JPH10185447A BRICK JOINT REPAIRING APPARATUS FOR HEATING FURNACE 失效
公开(公告)号：JPH10185447A
公开(公告)日：1998-07-14
申请号：JP34752096
申请日：1996-12-26
申请人： KAWASAKI STEEL CO
发明人： TAKAHIRA TAKUYA , TSUCHIKURA NORIOMI
IPC分类号： F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a brick joint repairing apparatus for easily repairing an innermost part of an end flue burner hole by efficiently conducting a repairing work even at a narrow place. SOLUTION: The brick joint repairing apparatus comprises a container 3 with a grip portable in the state that mortar 2 is contained, a blowing tube 5 linearly extended from the container 3 in communication with the container 3 to blow the mortar 2 in the container 2 from an end, a bent tube 6 detachably mounted at the end of the tube 5, an air diffusing tube 7 inserted into the tube to forcibly inject the mortar 2 from the end of the tube 6 by diffusing the air in the tube 5, an air supply source for supplying the air of predetermined pressure via a hose 9 to the tube 7, and a valve 8 interposed between the source and the tube 7 near the grip 4 to switch the supply of the air to the tube 7.

5. 发明专利

JP2001164306A DEVICE OR CONTROLLING FURNACE OP PRESSURE IN SOLID REDUCING AGENT FILLING TYPE SMELTING REDUCTION FURNACE 失效
公开(公告)号：JP2001164306A
公开(公告)日：2001-06-19
申请号：JP34726199
申请日：1999-12-07
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , HAMAKI MAKOTO , MIZUFUJI MASATO , TAKAHIRA TAKUYA , AIZAWA KANJI , FUJIMURA TOSHIO , HARA YOSHIAKI
IPC分类号： C22B7/02 , C21B11/02 , C22B19/30 , F27D19/00
摘要： PROBLEM TO BE SOLVED: To provide a furnace top pressure control device in a smelting reduction furnace, with which the equipment cost becomes cheaper than that of the conventional equipment and the working environment in front of the furnace can be kept desirably. SOLUTION: In this furnace top pressure control device in the smelting reduction furnace having multi-step tuyeres for blowing a powdery ray material containing high volatility metal and executing the smelting reduction to a blown powdery raw material to recover the high volatility metal, a pressure gage which is arranged at the furnace upper part of the solid reducing agent filling type smelting reduction furnace or the inlet of an exhaust gas flue and measures the pressure of the exhaust gas, a computing element which compares the measured value with a pre-inputted target pressure range by receiving the measured value of the pressure gage, and a pressure control means which adjusts the opening degree and the number of revolutions, of a damper in an exhauster arranged on the downstream side of a dust collector in this flue so as to keep the above pressure to the target pressure range by receiving the outputted signal from the computing element, are provided.

6. 发明专利

JPH10176169A APPARATUS FOR SPRAYING SURFACE PROTECTANT OVER REFRACTORY BRICK OF COKING CHAMBER OF COKE OVEN 失效
公开(公告)号：JPH10176169A
公开(公告)日：1998-06-30
申请号：JP33781796
申请日：1996-12-18
申请人： KAWASAKI STEEL CO
发明人： TAKAHIRA TAKUYA , ANDO TAKESHI
IPC分类号： C10B43/14
摘要： PROBLEM TO BE SOLVED: To spray a surface protectant over the refractory brick of a coking chamber with a simple apparatus and to thereby inhibit carbon deposition inexpensively. SOLUTION: An elevating rack 10 is moved vertically along the gate-type guide post 9 arranged on the working deck 7 provided on a coke pusher 4 transversely traveling on the coke pushing side of a coking chamber 1, and a self-running carriage 16 is moved forward and backward along the guide rail 15 horizontally disposed on the rack 19. By the combination of the vertical and horizontal movements of the surface protectant spray lance 18 mounted on the carriage 16, the surface protectant can be sprayed in good workability onto the side wall surface of the chamber 1 with a simple apparatus from a spray nozzle open to the horizontal direction of the external periphery of the tip.

7. 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

8. 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.

9. 发明专利

JP2001207205A METHOD FOR OPERATING SOLID REDUCING MATERIAL PACKED BED TYPE SMELTING REDUCING FURNACE 失效
公开(公告)号：JP2001207205A
公开(公告)日：2001-07-31
申请号：JP2000013393
申请日：2000-01-21
申请人： KAWASAKI STEEL CO
发明人： MIZUFUJI MASATO , MASUMOTO SHINICHI , TAKAHIRA TAKUYA
IPC分类号： C21B11/02
摘要： PROBLEM TO BE SOLVED: To easily realize the stabilization of furnace operation at a low cost. SOLUTION: The required ratio Y of the quantity of heat at the base surface of furnace casing of the ordinate is the value obtained by dividing the necessary quantity Q1 of heat per 1 m2 of the furnace bottom when the operation is resumed after the furnace is stopped for eight hours by the quantity Q2 of heat supplied per 1 m2 the furnace bottom in ordinary operation and the required ratio 1.0 of the quantity of heat at the base surface of the furnace casing is in the case of Q1=Q2. The quantity Q2 of heat supplied per 1 m2 of the furnace bottom is made proportional to the amount of the produced melt, i.e., the amount of the pig slag recovered from a tap hole. The relation of X and Y is expressed by formulas Y=2.6930-0.45307μlog10(X). Y>=1.0Xmax=5454. From these formulas, the value of Y meeting the amount of tapping (production scale of the furnace) X per day is determined and further, the necessary quantity of heat to the furnace bottom is calculated from the value of Y. The amount of feeding the ferrous scrap into the furnace meeting the necessary quantity of heat is determined and the ferrous scrap of at least this amount of feeding is fed into the furnace.

10. 发明专利

JPH1121557A JIG FOR SPRAYING OF REPAIRING MATERIAL FOR OVEN WALL 失效
公开(公告)号：JPH1121557A
公开(公告)日：1999-01-26
申请号：JP17489497
申请日：1997-06-30
申请人： KAWASAKI STEEL CO
发明人： TAKAHIRA TAKUYA , TSUCHIKURA NORIOMI
IPC分类号： C10B29/06 , C10B45/00
摘要： PROBLEM TO BE SOLVED: To achieve both the lightening of a jig and the improvement of cooling ability, with respect to the spraying of a repairing material to a oven wall of a combustion chamber of a coke oven and the like. SOLUTION: An iron-made end 6A of a cooling hose is inserted from base end 3B of protective cover 3 in such a way that the clearance between spraying lance 2 and protective cover 3 is plugged. The other end which is not shown in the figure is connected to the delivery side of an air pump for feeding cooling air. Cooling air fed through cooling hose 6 is discharged from the end 6A and is fed to the clearance between spraying lance 2 and protective cover 3. By continuous feeding to the clearance, the cooling air is then discharged from an end 3A of protective cover 3 to the outside. The continuous feeding of cooling air as stated above results in accelerating the cooling of spraying lance 2 and in reducing the possibility of its loss by scorching.

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