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1. 发明专利

JPH0754031A LANCE FOR CHANGING RAW MATERIAL 失效
公开(公告)号：JPH0754031A
公开(公告)日：1995-02-28
申请号：JP19956093
申请日：1993-08-11
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： KUROKI TAKASHI , TAOKA KEIZO , HAMADA SHUNJI , HASHIMOTO NAGAHITO , NABESHIMA YUKI , INOUE EIJI , SAKAMOTO MANABU
IPC分类号： C21C5/46 , C21B11/00 , F27D3/18
摘要： PURPOSE:To obtain a lance for charging raw material further prolonging the service life by making the lance body a hollow annular body and providing a nozzle tip part constituted of an inner part water cooling steel-made member in this hollow annular body. CONSTITUTION:The lance body forming a supplying passage M for raw material is formed to the hollow annular body 1 and constituted of the nozzle tip 1a and a barrel part 1b. The nozzle tip 1a is constituted of the inner part water cooling copper-made member having >=15 deg. nozzle angle theta. Further, a ceramic linear 2 having excellent wear resistance is arranged in the inside of the hollow annular body 1. This liner 2 is arranged at the side wall of the supplying passage M except a zone (1) having the length of at least 0.8 times of the diameter D of the supplying passage M from the nozzle tip part. By this method, the wear at the nozzle tip can be reduced or prevented.

2. 发明专利

JPH07138630A DEVICE FOR CHARGING POWDERY AND GRANULAR MATERIAL IN METAL REFINING FURNACE AND CHARGING LANCE 失效
公开(公告)号：JPH07138630A
公开(公告)日：1995-05-30
申请号：JP28511593
申请日：1993-11-15
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： HAMADA SHUNJI , KUROKI TAKASHI , TAOKA KEIZO , NABESHIMA YUKI , SUZUKI TAKUYA , HASHIMOTO NAGAHITO , INOUE EIJI , SAKAMOTO MANABU , SATO SUMIO
IPC分类号： C21C5/46 , C21C7/072
摘要： PURPOSE:To blow powdery material in a good yield and to improve the operating rate of a refining furnace by constituting the lance for charging the powdery material to be freely attachable/detachable to/from this lifting device. CONSTITUTION:The charging lance 4 provided with a supplying hole for powdery and granular ore at the upper end part and a lifting device 5 for holding the lance 4 so as to be freely ascended/descended are provided and the lance 4 is freely attached/detached to this lifting device 5. A blowing hole 14 for purge gas for preventing the invasion of the furnace gas into lance 4 is arranged at the upper end part of this lance 4. It is more effective that the inner wall of the charging lance 4 is made of an inorganic material liner having divided structure. By this constitution, the powdery and granular material can effectively be charged and the operating ratio together with the yield are improved and the service life of the lance is extended, and also the operation is stabilized.

3. 发明专利

JPH07138629A LANCE FOR CHARGING RAW MATERIAL 失效
公开(公告)号：JPH07138629A
公开(公告)日：1995-05-30
申请号：JP28511493
申请日：1993-11-15
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： TAOKA KEIZO , ASAHO RYUICHI , KUROKI TAKASHI , NABESHIMA YUKI , HAMADA SHUNJI , INOUE EIJI , SAKAMOTO MANABU , SATO SUMIO
IPC分类号： C21C5/46 , C21C7/072
摘要： PURPOSE:To prevent the thermal deformation during using a lance and to obtain the stable operation constituting the lance for charging raw material so that the lance main body rotates around the axial center. CONSTITUTION:In the lance for charging the raw material used in smelting reduction process of Cr ore, etc., in a top-bottom combined blowing converter type refining furnace, an inner part cooling type outer cylinder 2 constituting the lance body is engaged in the circumference of an inner cylinder 1 and has the structure capable of vertically shifting along the inner cylinder and also of rotating around the inner cylinder. By this constitution, the deformation of the lance tip part caused by the thermal influence during using the lance is prevented and the stable operation is attained.

4. 发明专利

JPH09209023A DEVICE FOR CONNECTING PIPING AT FURNACE BOTTOM OF CONVERTER 失效
公开(公告)号：JPH09209023A
公开(公告)日：1997-08-12
申请号：JP2240296
申请日：1996-02-08
申请人： KAWASAKI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： SAITO MASAYUKI , SHOBU TAIZO , SAKAMOTO MANABU , HAMADA SHUNJI , KUROKI TAKASHI
IPC分类号： C21C5/46 , C21C5/48 , F16J15/06 , F27B3/22 , F27B7/36 , F27D3/16 , F27D7/02
摘要： PROBLEM TO BE SOLVED: To provide a connecting device for piping at the furnace bottom of a converter which can surely execute attachment/detachment of the piping in a short time and can simply execute alignment and adjustment in vertical position. SOLUTION: The piping 3 at the furnace bottom of the converter and piping 5 at the furnace body side are connected so as to be freely attached/detached. The inner surface at the end part 3' of the piping 3 at the furnace bottom is formed in a spherical surface, and a first ball part 10a abutting on this spherical surface is fixed in the end part of the piping 3 at the furnace bottom so as to be relatively displaced with the spherical surface. A piston 13 is protruded upward from the first ball part 10a. The inner surface side at the end part 5' of the piping 5 at the furnace body side is formed in a spherical surface, and a second ball part 10b abutting on this spherical surface is fixed in the end part of the piping 5 at the furnace body side so as to be relatively displaced with the spherical surface. A cylinder 14 is protruded downward from the second ball part 10b. The piston 13 is freely slid along the inner surface of the cylinder 14.

5. 发明专利

JPH07300609A DEVICE FOR CHARGING POWDERY AND GRANULAR MATERIAL IN METAL REFINING FURNACE 失效
公开(公告)号：JPH07300609A
公开(公告)日：1995-11-14
申请号：JP9108594
申请日：1994-04-28
申请人： KAWASAKI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： SATO SUMIO , INOUE EIJI , SAKAMOTO MANABU , ICHIHARA AKIRA , HAMADA SHUNJI , TAOKA KEIZO , KUROKI TAKASHI , NABESHIMA YUKI
IPC分类号： C21C5/46 , C21B11/00 , C21C7/04 , F27D3/10
摘要： PURPOSE:To provide a charging device for powdery and granular material in a metal refining furnace capable of surely charging the powdery and granular material into the molten metal from the upper position of the molten metal surface and having the compact structure restrained in whole height. CONSTITUTION:The powdery and granular material discharged from a weighing hopper 19 is supplied into the molten metal 2 in the metal refining furnace 1 through a conveyor 22. The powdery and granular material charging mechanism 6 arranged succeeding to the conveyor 22 is provided with an inner cylinder 8 having a supplying hole 7 for powdery and granular material at the upper end part and an outer cylinder 9 fitted to the outer part of the inner cylinder 8 so as to be freely moved upward and downward, and arranged with an inner cylinder carriage 11 for holding the inner cylinder 8 on an outer cylinder carriage 10 for holding the outer cylinder 9. Further, a stopper 18 for restraining the inner cylinder 11 is provided at the fixed height.

6. 发明专利

JPH0754028A LANCE FOR CHARGING RAW MATERIAL 失效
公开(公告)号：JPH0754028A
公开(公告)日：1995-02-28
申请号：JP19955993
申请日：1993-08-11
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： HAMADA SHUNJI , KUROKI TAKASHI , TAOKA KEIZO , NABESHIMA YUKI , INOUE EIJI , SAKAMOTO MANABU
IPC分类号： C21B7/00 , C21B7/24 , C21B11/02 , C21C5/46
摘要： PURPOSE:To detect the clogging of raw material at an early stage during using a lance by providing two chambers for detecting pressure having opening part near a supplying port and a discharging port for raw material in the lance body along the passage and connecting each chamber through a differential pressure monitoring means. CONSTITUTION:The slender passage 1c connecting the supplying port 1a and the discharging port 1b for raw material M is formed in the lance body 1 for charging the raw material, and the raw material M is supplied into a treating vessel while blowing inert gas from a gas supplying pipe 2. Two chambers 4a, 4b for detecting the pressure having the openings K1, K2 are arranged in the passage 1c near the zones of the supplying hole 1a and the discharging port 1b, and the chambers 4a, 4b are mutually connected through the differential pressure monitoring means 5 composed of a connecting pipe 5a and a differential pressure transmitter 5b. By this method, when the raw material M clogs in the passage 1c in the lance body 1, the pressure in the range arranging the chamber 4a rapidly rise and the clogging of the raw material in the lance can be detected.

7. 发明专利

JP2001062489A REMOVING METHOD OF DEPOSITED SCALE IN DUST COLLECTING WATER CIRCULATION LINE 失效
公开(公告)号：JP2001062489A
公开(公告)日：2001-03-13
申请号：JP24528499
申请日：1999-08-31
申请人： KAWASAKI STEEL CO , KATAYAMA CHEMICAL WORKS CO
发明人： OYAMA KUNITOSHI , YUDE TAKAO , KUROKI TAKASHI , MIYAMOTO MICHIYUKI , KAWAMURA YASUNORI
IPC分类号： B01D47/06 , C02F5/00 , C02F5/08
摘要： PROBLEM TO BE SOLVED: To remove scale by on-line cleaning while a dust collection equipment is in operation continued by adding an acid based cleaning agent in a dust collecting water in the upstream side of a scale deposited position and setting the pH of the dust collecting water to equal to or below a specific value in a normal operation of a dust collecting water circulation line incident to a wet dust collection device. SOLUTION: A convertor 1 in an iron work is provided with a wet dust collection equipment having spray nozzles 6, 6' with saturator 4 and ringstlit washer 5 in addition to a waste heat boiler 3 around the waste gas pipe 2 to recover waste gas energy. In such a case, when the dust collecting water pumped up from a dust collecting water tank 11 by a pump P is supplied to the spray nozzle 6 of the saturator 4, hydrochloric acid is added into the dust collecting water flowing to the saturator 4 in a dust collecting water supply pipe 12 to remove the deposited scale in the pipe. That is, the acid based cleaning agent is added in the dust collecting water to adjust to pH

8. 发明专利

JPH03115517A APPARATUS FOR COOLING EXHAUST GAS IN CONVERTER 失效
公开(公告)号：JPH03115517A
公开(公告)日：1991-05-16
申请号：JP25213389
申请日：1989-09-29
申请人： KAWASAKI STEEL CO
发明人： TAMURA NOZOMI , KUROKI TAKASHI
IPC分类号： C21C5/38 , F27D17/00
摘要： PURPOSE:To prevent corrosion in a boiler part and to stabilize steam generating quantity in the boiler drum by attaching flow rate control means to a skirt, etc., from air-opened cooling tank arranging warm water temp. control means and water supplying pipe passage into degassing device from the boiler drum, respectively. CONSTITUTION:Water stored in the air-opened cooling tank 6 is supplied into the cooling water supplying pipe passage 7 to the skirt and into the water supplying pipe 11 to the degassing device 18 with a water supplying pump 8. Each is adjusted to the constant flow rate with the flow rate control means composed of a flow gage and a flow rate control valve 20. Water supplied into the skirt 3 is returned back to the cooling tank 6 with a skirt drainage pipe to form circulating system. On the other hand, supplement water is supplied from the degassing device 18 through a boiler drum water supplying pipe 12 and water supplying pump 8. Further, the temp. control device 24 is attached to the tank 6, and by controlling opening degree of the flow rate control valve 20, the warm water temp. is fixed. In this result, the supplied warm water to the boiler drum 14 is perfectly degassed with the degassing device 18, and the corrosion in the boiler drum 14 is prevented. Further, as the water supplying temp. to the boiler drum 14 is stabilized, the steam generating quantity is stabilized.

9. 发明专利

JPS6393811A PRETREATING METHOD FOR MOLTEN IRON 失效
公开(公告)号：JPS6393811A
公开(公告)日：1988-04-25
申请号：JP23618686
申请日：1986-10-06
申请人： KAWASAKI STEEL CO
发明人： OGURA SHIGERU , KUROKI TAKASHI
IPC分类号： C21C1/00 , C21C1/06
摘要： PURPOSE:To adjust the blowing condition of flux and to prevent the over-flow from a torpedo car by bubbling phenomenon of molten slag, by charging molten iron tapped from a blast furnace into the torpedo car and detecting vibration toward horizontal direction and vertical direction of the torpedo car at the time of charging flux for pre-refining, such as de-siliconization, de-phosphorization, de-sulfurization, etc. CONSTITUTION:The molten iron 9 tapped from the blast furnace is charged into the torpedo car 1 and before supplying into the refining furnace for steel making, such as converter, etc., the flux for pre-refining is injected into the molten iron 9 by an injecting lance 6, to execute the pre-refining, such as de-siliconization, de- phosphorization, de-sulfurization, etc. In this case, the produced molten slag 8 is bubbled by reaction between the flux and the molten iron, and in order to prevent the over-flow from the torpedo car 1, the horizontal direction vibration and vertical direction vibration of torpedo car 1 are detected by a displacement gauges 10, 12 respectively at the time of pre-refining, and by this result, the blowing conditions, such as blowing quantity of flux and blowing speed, etc., are adjusted to prevent the over-flow of bubbled molten slag 8. The temp. drop of molten iron and the drop of pre-refining reaction efficienc, etc., are prevented and the pre-refining efficiency of the molten iron by the torpedo car is improved.

10. 发明专利

JPS6393474A METHOD FOR DISCRIMINATING STICKING OF FUSION-CUTTING SLAG TO BILLET 失效
公开(公告)号：JPS6393474A
公开(公告)日：1988-04-23
申请号：JP23635886
申请日：1986-10-06
申请人： KAWASAKI STEEL CO
发明人： KUROKI TAKASHI , NAKAMURA KATSUMI , TANNO EIICHI
IPC分类号： B23K7/00
摘要： PURPOSE:To improve the accuracy of discrimination with an equipment for gas cutting and transporting an ingot by measuring the oscillation frequency when the fusion-cutting slag sticking to the rear surface of the ingot and roll contact against each other thereby discriminating the presence or absence of slag. CONSTITUTION:The fusion-cutting slag collides against the roll 4 mounted with an oscillator detector 3 and emits a collision sound if the fusion-cutting slag exists at the front or rear of the ingot 2 owing to the trouble in a slag removing device 1. Then, the oscillator detector 3 existing on a bearing 5 picks up the oscillation. The oscillation waveform picked up by the detector 3 is analyzed by a frequency analyzing circuit and is compared with a reference frequency in a slag sticking discriminating circuit which judges the frequency above the reference value as the ingot stuck with the fusion-cutting slag and displays the same on a monitor. The sticking of the fusion-cutting slag is thus discriminated with high accuracy.

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