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1. 发明专利

JPH08261660A METHOD AND APPARATUS FOR EXECUTING PREPARED UNSHAPED REFRACTORY 失效
公开(公告)号：JPH08261660A
公开(公告)日：1996-10-11
申请号：JP6124295
申请日：1995-03-20
申请人： HARIMA CERAMIC CO LTD , KOBE STEEL LTD
发明人： OSHIMA RYUZO , OTE AKIRA , OCHIAI YUJI , MATSUMOTO OSAMI , KATAYAMA MASATO , YOSHIZAWA SHINICHI , AKATA KATSUMI
IPC分类号： F27D1/00 , F27D1/16
摘要： PURPOSE: To obtain an excellent executing material even when openings are concentrated at one side of a deposit in the case of executing the deposit of a molten metal vessel. CONSTITUTION: A receiving hopper 3 and a chute 4 are disposed at the center of a molten metal vessel 1, and a vibrating hopper 8 interlocked to a vibrating plate 7 is provided under the chute 4. A jack support frame 5 is fixed to the lower part of a support frame 2, and the plate 7 is vertically movably supported by the frame 5. A prepared unshaped refractory is cast in the deposit in the state that the plate 7 is lifted by the jack 6. After the casting is finished, the plate 7 is moved down, the refractory is vibrated, and a load is given from above to degas the refractory.

2. 发明专利

JPH07159051A EXECUTING METHOD AND ITS APPARATUS FOR CASTABLE REFRACTORY 失效
公开(公告)号：JPH07159051A
公开(公告)日：1995-06-20
申请号：JP31063793
申请日：1993-12-10
申请人： HARIMA CERAMIC CO LTD , KOBE STEEL LTD
发明人： OSHIMA RYUZO , OTE AKIRA , OCHIAI YUJI , HIRAFUKU KEIICHI , KATAYAMA MASATO , AKATA KATSUMI
IPC分类号： B22D41/02 , C21C5/44 , F27D1/16
摘要： PURPOSE:To execute a bed part of a molten metal vessel with a small number of workers and in a short period of time and, moreover, obtain a good executed body. CONSTITUTION:A receiving hopper 18 and a chute 19 are disposed at the central part of a molten metal vessel 15, and an oscillating hopper 22 is provided underneath the chute 19. An oscillating plate 21 is connectively provided at the lower part of the oscillating hopper 22 and supported by a frame 17 via coiled springs 20. A castable refractory is guided from the oscillating hopper 22 to the underside of the oscillating plate 21 so as to be pushed but toward the peripheral side of a bottom wall, whereby the entire face of a bed part is executed.

3. 发明专利

JPH09194917A METHOD FOR TESTING PACKING MATERIAL FOR IRON TAPPING HOLE 失效
公开(公告)号：JPH09194917A
公开(公告)日：1997-07-29
申请号：JP134196
申请日：1996-01-09
申请人： SHINAGAWA REFRACTORIES CO , KOBE STEEL LTD
发明人： OMORI YOSHIO , MICHIHIRO OSAMU , TANIGAWA SHOICHI , MOTOMA NOBUYUKI , OCHIAI YUJI
IPC分类号： C21B7/12 , F27B1/10 , F27B17/02 , F27D3/14
摘要： PROBLEM TO BE SOLVED: To enable the evaluation of the diffusion state, structure and reactivity of molten iron and/or molten slag of a packing material for an iron tapping hole packed in the state affected from the molten iron and/or the molten slag. SOLUTION: A coke 10, pig iron 11 and slag 12 are incorporated in a simulated furnace 2 and a prescribed pressure is applied in the furnace and the inside of the furnace is heated to a prescribed temp., and after melting the pig iron 11 and the slag 12, the packing material 9 for the iron tapping hole is packed into a packing hole 3 opened at the side wall of the simulated furnace 2. After holding the inside of the furnace at a prescribed temp. for a prescribed time, this inside is cooled and the state of the packing material 9 for the iron tapping hole is evaluated.

4. 发明专利

JPH08136159A HEATING DEVICE OF VESSEL HAVING REFRACTORY INSIDE LINING, AND ITS HEATING TEMPERATURE CONTROLLING METHOD 失效
公开(公告)号：JPH08136159A
公开(公告)日：1996-05-31
申请号：JP27161094
申请日：1994-11-04
申请人： CHUGAI RO KOGYO KAISHA LTD , KOBE STEEL LTD , SHINKO METSUKUSU KK , KOBE KOTOBUKI TEKKO KK
发明人： TSUKAMOTO MASATOSHI , ODAWARA RYUICHI , OCHIAI YUJI , HATOGUCHI MORIKAZU
IPC分类号： F27D1/16
摘要： PURPOSE: To contrive improvement of a fuel efficiency, a prevention of rupture of refractory material and improvement of quality, by heating an inner section of a vessel so that a radiation temperature of a vessel surface follows a refractory temperature pattern in a low temperature region of an atmospheric temperature in a vessel, and executing a heating so that an atmospheric temperature follows a refractory temperature pattern, in a high temperature region. CONSTITUTION: A heating device is provided with a programme setting device 3 executing a storing of a refractory temperature pattern 2 indicating, in a lapse of time, a temperature history of a refractory inner face of a vessel 1, and temperature indication regulators 4, 5. The temperature indication regulator 4 controls a flow quantity indication regulator 8 so that a measured value TA of a radiation temperature sensor 6 follows the refractory temperature pattern 2, and the temperature indication regulators 5 controls the flow quantity indication regulator 8 so that a measured value TB of an atmospheric temperature sensor 7 follows the refractory temperature pattern 2. A switch driving means 20 executes a change- over of switches 17, 18 to the temperature indication regulator 4 side, in a low temperature region wherein an atmospheric temperature is equal to a predetermined value T1 or lower in an inside of the vessel and executes a change-over of switches 17, 18 to the temperature indication regulator 5 side, when an atmospheric temperature exceeds the predetermined value T1 .

5. 发明专利

JP2002020177A HIGH-SILICON CARBIDE-CONTAINING CASTABLE REFRACTORY 失效
公开(公告)号：JP2002020177A
公开(公告)日：2002-01-23
申请号：JP2000197051
申请日：2000-06-29
申请人： KUROSAKI HARIMA CORP , KOBE STEEL LTD
发明人： TOMONO HIROYOSHI , OCHIAI YUJI
IPC分类号： C04B35/66
摘要： PROBLEM TO BE SOLVED: To furthermore enhance the resistance of a castable refractory containing a large quantity of silicon carbide to the oxidation by O2 and FeO by making good use of the characteristic excellent in the resistance to the crack and exfoliation caused by molten iron and slag. SOLUTION: Silicon carbide or 55-90 mass % and 0.5-10 mass % ferrosilicon nitride having 10-18 mass % Fe content are mainly incorporated in a refractory material, to which a dispersant, a sintering agent, an antioxidant, an explosion preventing agent or the like are then added by outer rates.

6. 发明专利

JPH08136161A HEATING DEVICE FOR VESSEL HAVING REFRACTORY INSIDE LINING, AND ITS HEATING CONTROL METHOD 失效
公开(公告)号：JPH08136161A
公开(公告)日：1996-05-31
申请号：JP27161294
申请日：1994-11-04
申请人： KOBE STEEL LTD
发明人： ODAWARA RYUICHI , OCHIAI YUJI
IPC分类号： F27D1/16 , B22D41/02
摘要： PURPOSE: To reduce a working cost, by obtaining an optimum secondary air circulating pattern changing with respect to every working specification simply and conveniently, through controlling a secondary air regulating valve, so that a difference between measured values of inner face temperature sensors set at an upper and a lower sections of an inner face of refractory material. CONSTITUTION: A circulating air pattern 40 wherein a refractory temperature in a vessel is indicated, as a circulating air quantity to be uniform at an upper direction and a lower direction against a certain fuel supply quantity, is set, and based on this, a regulating valve 34 of circulating air is controlled by an air quantity indication regulator 38. Here, a temperature indication regulator 41 wherein the regulating valve 34 is controlled so that a difference between measured values of inner sensors 9U, 9L set at upper and lower sections on a refractory material inner face, and the circulating air pattern 40 is set, by heating the inside of the vessel 1 during a control of the regulating valve 34 through the temperature indication regulator 41, with respect to the vessel 1 of a specified work specification.

7. 发明专利

JPS63207986A FURNACE INNER-WALL HOT SPRAY DEVICE FOR BLAST FURNACE, ETC. 失效
公开(公告)号：JPS63207986A
公开(公告)日：1988-08-29
申请号：JP4120587
申请日：1987-02-23
申请人： KOBE STEEL LTD , KURITA SAKUGANKI KK
发明人： INADA KOJI , SHIMOMURA KOJI , OCHIAI YUJI , KOIKE KOZO , IKEDA HIDEAKI , SAITO TADAYOSHI
IPC分类号： C21B7/06 , F27D1/16

8. 发明专利

JPS62170406A HOT GUNNING DEVICE FOR INSIDE WALL OF BLAST FURNACE OR THE LIKE 失效
公开(公告)号：JPS62170406A
公开(公告)日：1987-07-27
申请号：JP1354786
申请日：1986-01-23
申请人： KOBE STEEL LTD
发明人： INADA KOJI , SHIMOMURA KOJI , OCHIAI YUJI
IPC分类号： F27D1/16 , C21B7/06
摘要： PURPOSE:To repair the inside of a blast furnace with a simple operation by utilizing a nozzle which swivels horizontally around the furnace core and can be vertically moved in the furnace by cords from the furnace outside to gun refractories in the stage of repairing the damaged part of the inside wall of the furnace with monolithic refractories. CONSTITUTION:A supporting frame 2 attached with the nozzle 1 is made swivelable in a horizontal direction around the furnace core and is tilted in the direction of an arrow (b) by means of a tilting cylinder 5 around a fulcrum 4 in the stage of repairing the damaged part of the refractory material on the inside wall of the blast furnace 6 by the monolithic refractories gunned from the nozzle. In addition, the above-mentioned frame is made vertically movable in the direction (c) in the furnace by means of lifting wires 10 via winches 9 and sheaves 8. The powder refractories are supplied together with water to the nozzle 1 by a press feed hose 16 and the nozzle is correctly directed to the damaged point by vertical movement, horizontal swiveling and tilting and the monolithic refractories are gunned therefrom. The inside wall of the furnace is thus quickly repaired by the simple operation.

9. 发明专利

JPH10167846A DRYING METHOD FOR ALUMINA-MAGNESIA AMORPHOUS REFRACTORY MATERIAL AND AMORPHOUS REFRACTORY MATERIAL PRODUCED BY THAT METHOD 失效
公开(公告)号：JPH10167846A
公开(公告)日：1998-06-23
申请号：JP32188296
申请日：1996-12-02
申请人： KOBE STEEL LTD , TOWA TAIKA KOGYO KK
发明人： MOTOMA NOBUYUKI , OCHIAI YUJI , MATSUE NOZOMI , FUJITA KAZUYA , HIJIKATA MASATO
IPC分类号： B22D41/02 , C04B35/66 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To prevent generation of cracks on a heated surface when an alumina- magnesia amorphous refractory material is dried by heating, by keeping the surface of the refractory material at specified temp. for specified time to form a spinel structure on the surface layer. SOLUTION: After an alumina-magnesia amorphous refractory material is applied and dried, the surface temp. is maintained at >=1300 deg.C for >=4 hours. A spinel structure is produced at >=1000 deg.C surface temp., however, at 1000 to 1300 deg.C, the growing rate of the spinel structure is slow and long time is required to grow. The reason why the surface temp. is kept for >=4 hours is to heat the refractory material at >=1000 deg.C to the inside of the material as >=60mm deep from the surface so that the spinel structure grows to that depth. By this method, when the amorphous refractory material is drastically heated or cooled by contact with a molten metal, difference in expansion in a high temp. range is not generated because the spinel structure is produced to >=60mm inside of the surface. Thus, cracks generating parallel to the heated surface of the amorphous refractory material can be prevented.

10. 发明专利

JPH08300140A UNSHAPED REFRACTORY LINING OF MOLTEN STEEL LADLE BED PART 失效
公开(公告)号：JPH08300140A
公开(公告)日：1996-11-19
申请号：JP9885395
申请日：1995-04-24
申请人： KOBE STEEL LTD
发明人： OTE AKIRA , OCHIAI YUJI
IPC分类号： B22D41/02 , F27D1/04
摘要： PURPOSE: To reduce the use of the unshaped refractory between major repairs by reducing the thickness of a permanent brick in the range where the molten steel is brought into contact when it is received, and increasing the thickness of the unshaped refractory lining at the part. CONSTITUTION: In the unshaped refractory lining of a molten steel ladle bed part, the thickness of the range where the molten steel is brought into contact when the molten steel is received, i.e., the thickness of the permanent brick 4 of the molten steel striking part 1 is smaller than that of a peripheral part 2. The thickness of the unshaped refractory lining 3 other than the molten steel striking part 1 is increased by the amount of the reduced thickness of the permanent brick 4. The thickness of the unshaped refractory lining 3 other than the molten steel striking part 1 is of the minimum value capable of withstanding the use between major repairs. During the intermediate repair, the extra material of the lining 3 of the molten steel striking part 1 is added, and tuyere bricks 6 are replaced. The amount of the unshaped refractory lining 3 to be used between major repairs can be reduced by about 20% compared with the conventional value.

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