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1. 发明专利

JPH0641614B2 失效
公开(公告)号：JPH0641614B2
公开(公告)日：1994-06-01
申请号：JP28123289
申请日：1989-10-27
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： OGATA SEIJI , HORIKAWA YUKINOBU , KITAMURA KOICHI
IPC分类号： F16J15/447 , C21C5/40 , C21C5/46 , F16J15/18 , F27D21/00

2. 发明专利

JPH03140408A SEALING DEVICE FOR SUB-LANCE HOLE IN PRESSURIZING TYPE CONVERTER WASTE GAS TREATING APPARATUS 失效
公开(公告)号：JPH03140408A
公开(公告)日：1991-06-14
申请号：JP28123289
申请日：1989-10-27
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： OGATA SEIJI , HORIKAWA YUKINOBU , KITAMURA KOICHI
IPC分类号： F16J15/447 , C21C5/40 , C21C5/46 , F16J15/18 , F27D21/00
摘要： PURPOSE:To enable measurement under condition of pressurizing without lowering gas pressure in a furnace by sticking a flexible hollow annular state seal material to seal mechanism side with fluid pressure and sealing gap between the seal mechanism and a sub-lance inserting cylinder. CONSTITUTION:At the time of measuring temp. in the furnace with the sub-lance 5, at first, the seal mechanism 22 at outer circumference of the sub-lance is laid to a seal mechanism receiver 22 arranged at outer circumference of upper end of the sub-lance inserting cylinder 10 and locked with a fixing device 31. Successively, the fluid is caused to flow into the flexible hollow annular state seal material 24 provided on inclined upper face 23 in the seal mechanism receiver 22, and the cross sectional diameter is increased with the pressure of this fluid and the gap between the seal mechanism 27 and the sub-lance inserting cylinder 10, is sealed. Successively, after opening a water cooling type gas seal valve 21 at intermediate part of the sub-lance inserting cylinder 10 and a water cooling type radiant heat cutoff valve 17, while injecting N2 gas into the sub-lance inserting cylinder 10 from N2 gas injecting device 11 at lower end of the sub-lance inserting cylinder 10, the sub-lance 5 at the waiting position is descended to the temp. measuring position in the converter.

3. 发明专利

JPH03257113A DEVICE FOR MAINTAINING PERPENDICULAR ACCURACY OF CONVERTER 失效
公开(公告)号：JPH03257113A
公开(公告)日：1991-11-15
申请号：JP5737490
申请日：1990-03-08
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： OGATA SEIJI , HORIKAWA YUKINOBU , KANBAYASHI TSUTOMU
IPC分类号： C21C5/50
摘要： PURPOSE:To make improvement in the perpendicular accuracy of a converter by inserting the front end of a centering rod via a hydraulic cylinder provided right under the trunnion bearing of the converter into the centering hole of a positioning fitting provided on the outer periphery in the lower part of the converter. CONSTITUTION:The hydraulic cylinder 11 is provided on a frame 10 right under the bearing 3 which freely rotatably supports the trunnion shaft 2 of the converter 1. A centering rod 13 slidably supported to the frame 10 is coupled by means of a pin 14 to the front end of the piston rod 12 thereof and further the positioning fitting 17 having the centering hole 16 is fixed to the outer periphery in the lower part of the converter 1. This centering hole 17 faces the above-mentioned centering rod 13 and is provided in the position on the perpendicular line of the upright converter 1. After the converter 1 is tilted via the above-mentioned trunnion shaft 2, the converter is erected and thereafter, the above-mentioned centering rod 13 is advanced by the operation of the hydraulic cylinder 11 and is inserted into the centering hole 16. The perpendicularity of the converter 1 is finely adjusted in this way and the perpendicular accuracy of the converter 2 is enhanced.

4. 发明专利

JPH03257112A DEVICE FOR MAINTAINING PERPENDICULAR ACCURACY OF CONVERTER 失效
公开(公告)号：JPH03257112A
公开(公告)日：1991-11-15
申请号：JP5737390
申请日：1990-03-08
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： OGATA SEIJI , HORIKAWA YUKINOBU , KIMURA KENJI
IPC分类号： C21C5/50
摘要： PURPOSE:To fix trunnion shafts of a converter and to make improvement in the perpendicular accuracy of the converter by crimping the projecting part on the lower side of a ring fitted and fixed into the extension shaft of the trunnion of the converter by means of piston rods of hydraulic cylinders disposed on the right and left thereof. CONSTITUTION:The trunnion shafts 2 of the converter 1 are freely rotatably supported by bearings 3. The one trunnion shaft 2 is further extended to form the extension shaft 2'. The ring 11 provided with the projecting part 10 is fitted and fixed onto this extension shaft 2'. Further, the hydraulic cylinders 12, 12' are disposed symmetrically on both right and left sides around this projecting part 10. After the converter 1 is erected after tilting, the trunnion shafts 2 are freely rotated and the converter 1 is stopped in the nearly perpendicular state by its own weight. The respective hydraulic cylinders 12, 12' mentioned above are then operated and the strokes thereof are fixed constant to press the front ends of the piston rods 13, 13' to the above-mentioned projecting part from the right and left. The perpendicularity of the converter 1 is finely adjusted in this way and the trunnion shafts 2 are fixed to enhance the perpendicular accuracy of the converter 1.

5. 发明专利

JPH10280019A FURNACE BODY STRUCTURE OF SMELTING REDUCTION EQUIPMENT 失效
公开(公告)号：JPH10280019A
公开(公告)日：1998-10-20
申请号：JP8855397
申请日：1997-04-07
申请人： NIPPON STEEL CORP
发明人： HORA SHIRO , HORIKAWA YUKINOBU
IPC分类号： C21B11/00
摘要： PROBLEM TO BE SOLVED: To reduce heat conducting quantity of a water cooling panel, to increase heat transfer quantity from a secondary combustion zone to molten slag zone and to reduce unit requirements of carbonaceous material and oxygen by coating heat insulating material on the surface of a water-cooling panel in a furnace body lining arranged at secondary combustion zone in the furnace body. SOLUTION: Metallic raw material of iron oxide, etc., carbonaceous material and flux are charged into the furnace body 1 fixed on a foundation 2 and oxygen-enriched gas is blown into the slag 8 from lower tuyerea 13 and the metallic raw material is reduced to produce molten metal 7 of pig iron, etc. Further, the gas produced in the reduction is burnt by blowing the oxygen from upper tuyeres 14 in the secondary combustion zone in the slag 8. This combustion heat is supplied into the slag 8 and the reducing action is promoted and a part thereof is absorbed with the water-cooling panel 3 in the furnace body lining and the balance is discharged from a gas exhaust hole. The heat insulating material 17 is coated on the surface of the water cooling panel 3 is the furnace body in smelting reduction equipment and the heat conduction of the secondary combustion heat is restrained to increase the supplying quantity to the slag 8.

6. 发明专利

JPH10310809A SMELTING REDUCTION METHOD OF IRON RAW MATERIAL AND SMELTING REDUCTION FURNACE 失效
公开(公告)号：JPH10310809A
公开(公告)日：1998-11-24
申请号：JP11851997
申请日：1997-05-08
申请人： NIPPON STEEL CORP
发明人： HORIKAWA YUKINOBU
IPC分类号： C21B11/00
摘要： PROBLEM TO BE SOLVED: To provide a smelting reduction method of iron raw material which restrains the formation of oxidizing atmosphere in molten slag, promotes the reduction of iron oxide and reduces reoxidation of iron or pig iron produced by reducing in the slag and to provide a smelting reduction furnace. SOLUTION: In the smelting reduction method of the iron raw material for producing molten iron or pig iron by charging the iron raw material, carbonaceous material and slag-making agent into a reaction vessel in the smelting reduction furnace and also, blowing oxygen or oxygen-enriched air, in addition to the oxygen or the oxygen-enriched air, from a part or the whole of lower tuyeres 4, pulverized carbonaceous material is blown together with carrier gas. The carbonaceous material concn. at the front part of the lower tuyeres is made high, and while restraining the formation of the oxidizing atmosphere developed in the slag, the smelting reduction is executed to the iron raw material to produce the iron or the pig iron.

7. 发明专利

JPH02263095A DC ARC FURNACE WALL ELECTRODE 失效
公开(公告)号：JPH02263095A
公开(公告)日：1990-10-25
申请号：JP8629489
申请日：1989-04-04
申请人： NIPPON STEEL CORP
发明人： HORIKAWA YUKINOBU , NIIOKA MASAKI , MAKINOSUMI SHINAN , ARIMITSU ISAO , MORIO KATSUHIRO , MORI KIYOSUKE
IPC分类号： F27D11/10 , F27B3/08 , H05B7/12
摘要： PURPOSE:To cool efficiently the tip of an electrode inside a furnace which is subjected to marked melting loss and improve its durability by providing a gas passage which is formed, penetrating a sleeve axially and a gas pipeline which blows gas into the furnace by way of said gas passage. CONSTITUTION:A sleeve 5 is fitted into an electrode 4 so that a gas passage 6 is provided, penetrating the sleeve axially 5. The gas 9 which is introduced from a gas supply source by way of a gas pipeline 8 is expanded once at a wind box 7, then transferred to the gas passage 6 so that the sleeve 5 or the tip of a rod-shaped electrode 4 may be cooled by the gas flowing through the gas passage 6. It is, therefore, possible to maintain the tip of the rod-shaped electrode 4 heat-damaged to a remarkable extent, especially by molten metal, at a low temperature and hence improve its durability. If an attempt is made to spray a cooling medium 20 to the rear end of the rod-shaped electrode 4 in addition to the gas cooling, more definite cooling action will be available.

8. 发明专利

JPS54109005A AUTOMATICALLY PILING UP DEVICE FOR GOODS 失效
公开(公告)号：JPS54109005A
公开(公告)日：1979-08-27
申请号：JP1592878
申请日：1978-02-16
申请人： NIPPON STEEL CORP
发明人： HORIKAWA YUKINOBU , MORI KIYOSUKE , INOIKE YUKINDO
IPC分类号： B65G13/12 , E04G21/22 , F27D1/16
摘要： PURPOSE:To pile up automatically and continuously fire bricks along the inner wall of a furnace by installing a fire brick conveyor and a turing conveyance section, and using laterally and vertically pushing mechanisms provided at the conveyor. CONSTITUTION:Fire brick 18 to be piled up along the inner wall of a furnace is conveyed with conveyor 9 to the position of stopper 5 of turning conveyance section 4. Brick 18 stopped with stopper 5 is pressed against already piled up brick 18' with laterally pushing board 6 of laterally pushing mechanism 1 and held. Next, section 4 is moved in a direction opposite to the brick pressing direction by contraction of horizontally turning mechanism 2. When brick 18 is piled up, mechanism 2 is expanded to hit goods conveying member 4' against one side of brick 18', and conveyor 9 is moved by the width of brick 18. Finally, the back side of brick 18 is pressed with tip 10 of vertically pushing mechainsm 3 to be set adjacent to brick 18'. By repeating this operation, fire bricks are piled up automatically.

9. 发明专利

JPH10330813A SMELTING REDUCTION AND DECARBURIZING EQUIPMENT AND OPERATING METHOD THEREOF 失效
公开(公告)号：JPH10330813A
公开(公告)日：1998-12-15
申请号：JP14679897
申请日：1997-06-04
申请人： NIPPON STEEL CORP
发明人： ICHIKAWA HIROSHI , HORIKAWA YUKINOBU
IPC分类号： C21B11/00 , C21C5/56
摘要： PROBLEM TO BE SOLVED: To provide a smelting reduction and decarburizing equipment for continuously producing a steel by efficiently decarburizing molten iron produced from iron raw material in a smelting reduction furnace while lowering the energy loss, with a simplified steel producing equipment. SOLUTION: In the equipment for directly producing the molten iron 7, iron raw material, carbonaceous material and slag-making material are added into the furnace body 1, and pure oxygen and/or oxygen-enriched gas are blown and then, the molten iron 7 is stored in the bottom part of the furnace body 1 and slag 8 having smaller sp. gr. than the molten iron 7 at the upper part of the molten iron, and the molten iron 7 from an iron tapping hole 11 through a molten iron pool part 9 and the slag 8 from a slag tapping hole 12, are continuously or intermittently discharged. In such a case, an oxygen lance 19 is arranged at a roof or a side surface of the molten iron pool part 9.

10. 发明专利

JPH10219326A PRODUCTION OF STEEL AND PRODUCING EQUIPMENT THEREOF 失效
公开(公告)号：JPH10219326A
公开(公告)日：1998-08-18
申请号：JP1952697
申请日：1997-01-31
申请人： NIPPON STEEL CORP
发明人： HORIKAWA YUKINOBU
IPC分类号： C21B11/00
摘要： PROBLEM TO BE SOLVED: To provide a producing method of a steel for continuously producing the steel by efficiently decarburizing and desulfurizing iron or a pig iron produced from iron raw material in a smelting reduction furnace while reducing energy loss, in a small producing equipment of the steel and the producing equipment thereof. SOLUTION: The iron raw material, a carbonaceous material and slag-making agent are charged into a reaction vessel 1 of the smelting reduction furnace constituted with a reaction vessel 1, a molten iron pool part 7 and a slag pool part 10 communicated with the reaction vessel 1 with siphon holes 6a, 6b. The smelting reduction is executed to the iron raw material by blowing oxygen or oxygen-enriched air, to continuously supply the produced iron or pig iron into a decarburizing vessel 13 from the molten iron pool part 7. Then, the oxygen is top-blown into the iron or the pig iron in the decarburizing vessel 13 through an oxygen lance 18 to execute the decarburizing treatment, and the decarburized molten steel is continuously supplied into a desulfurizing vessel 14 successively arranged with the decarburizing vessel 13. The desulfurizing agent is injected with carrier gas into the molten steel through an immersion lance 25 in the desulfurizing vessel 14 to execute the desulfurizing treatment, and the steel is continuously produced.

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