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11. 发明专利

JP2001294915A DEVICE FOR COOLING REFRACTORIES IN SIDE WALL AT FURNACE BOTTOM IN BLAST FURNACE 失效
公开(公告)号：JP2001294915A
公开(公告)日：2001-10-26
申请号：JP2000114093
申请日：2000-04-14
申请人： NIPPON STEEL CORP
发明人： MORIMITSU HIROTOMO , OKUDA TAKAAKI
IPC分类号： C21B7/10
摘要： PROBLEM TO BE SOLVED: To intensify cooling of refractories in a side wall at a furnace bottom in a blast furnace, and to perform the stable cooling having high reliability without hard work at low cost. SOLUTION: In a device for cooling the refractories in the side wall at the furnace bottom in the blast furnace constituted of carbon brick, castable refractory and an iron shell in order from inside of the furnace, the cooling device is formed of triple-tubes and two-layers at the outside of the triple-tubes are used as a cooling water flowing passage closed at the tip end and the center is formed in a hollow state opened at the tip end part. The triple-tubes penetrate the iron shell and the castable refractory, and the tip end thereof is embedded into a bored hole bored in the carbon brick. In the hollow, it is desirable to insert a thermo-meter for detecting the temperature of the furnace bottom and further, it is desirable that the hollow part is a guiding passage of a pressing-in paste for closely sticking the bored hole of the carbon brick and the cooling device.

12. 发明专利

JP2000273511A STAVE COOLER 失效
公开(公告)号：JP2000273511A
公开(公告)日：2000-10-03
申请号：JP8475299
申请日：1999-03-26
申请人： NIPPON STEEL CORP
发明人： MORIMITSU HIROTOMO , KISHIGAMI KAZUTSUGU , HIRATA KOJI , HIRAO YUJI
IPC分类号： C21B7/10
摘要： PROBLEM TO BE SOLVED: To obtain a stave cooler for cooling a furnace wall having homogeneous heat insulating characteristic by inserting a cooling pipe at the rear surface side and the preformed porous ceramics at the working surface side as cast-in. SOLUTION: A cooling pipe 2 is disposed at the rear surface side of the stave cooler 1 and the preformed porous ceramic 3 is disposed at the working surface side and these are inserted as cast-in. It is desirable that the diameter of pores 4 in the porous ceramic 3 is >= average 2 mm and the percentage of void is >=50%. The porous ceramic 3 is separately used to either one of alumina base and SiC base according to thermal loading state in a blast furnace. Since the preformed ceramic having the homogeneous percentage of void is used, a complex body of the homogeneous casting and the porous ceramic is obtd. after casting. Since cast iron flows into the voids in the porous ceramic 3 at the casting time, the cast iron holds the porous ceramic 3 with the wide holding surface and prevents the fall-down. The porous ceramic 3 is formed as a panel-state and has good workability when the stave is manufactured.

13. 发明专利

JP2003247011A METHOD AND DEVICE FOR OPENING/CLOSING MOLTEN METAL TAPPING HOLE FOR METALLURGICAL FURNACE 审中-公开
公开(公告)号：JP2003247011A
公开(公告)日：2003-09-05
申请号：JP2002043413
申请日：2002-02-20
申请人： NIPPON STEEL CORP
发明人： OKUDA TAKAAKI , MORIMITSU HIROTOMO
IPC分类号： C21B7/12
摘要： PROBLEM TO BE SOLVED: To provide a method and a single device for opening/closing a molten metal tapping hole used for both functions of the opening and the closure of the molten metal tapping hole. SOLUTION: In the method for opening/closing the molten metal tapping hole 1 in a metallurgical furnace for melting raw materials, such as ore, a core metal rod 2 is used as a spindle and a mud material 3 having a cross sectional shape a little larger than that of the molten metal tapping hole, is formed as a columnar shape around the core metal rod, and the molten metal tapping hole is closed by driving in the mud material together with the above core metal rod and desirably, the molten metal tapping hole is opened by pulling out the driven-in core metal rod together with the above mud material from the mud material. COPYRIGHT: (C)2003,JPO

14. 发明专利

JP2002180113A STAVE COOLER FOR BLAST FURNACE 审中-公开
公开(公告)号：JP2002180113A
公开(公告)日：2002-06-26
申请号：JP2001227923
申请日：2001-07-27
申请人： NIPPON STEEL CORP
发明人： MORIMITSU HIROTOMO , OKUDA TAKAAKI
IPC分类号： C21B7/10
摘要： PROBLEM TO BE SOLVED: To provide a copper- or a copper alloy-made stave cooler used for cooling the wall of a blast furnace, etc., which has no welded portion on the cooling water passage and in which pressure loss of the cooling water is low, no stagnation of the cooling water exists, an expansion pipe can be omitted and the length of cooling water piping can be shortened. SOLUTION: The stave body 1 in the stave cooler used for blast furnaces is made of the copper or the copper alloy casting, steel pipes as the cooling water piping 2 are cast into this copper or the copper alloy casting, and the cooling water is made to flow in the steel pipes. The steel pipe has chromium- plating or nickel-plating applied on the outer surface or is made of austenitic stainless steel. The copper purity in the stave cooler is adjusted to >=99.9%. Further, the steel pipe is cast into the copper or the copper alloy casting with both ends projected and these projecting parts are made to double pipes. The projecting parts are projected to the outer part of a seal member 6 at the outside of an iron shell 4.

15. 发明专利

JP2003171707A BLAST TUYERE FOR METALLURGICAL FURNACE 审中-公开
公开(公告)号：JP2003171707A
公开(公告)日：2003-06-20
申请号：JP2001375315
申请日：2001-12-10
申请人： NIPPON STEEL CORP
发明人： OKUDA TAKAAKI , MORIMITSU HIROTOMO
IPC分类号： C21B7/16 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To provide a tuyere which has excellent wear resistance, erosion resistance and impact resistance, which can suppress the amount of heat of a tuyere body deprived by cooling water to the utmost and prevent drop of the blast temperature and the in-furnace gas. SOLUTION: In a copper or copper alloy blast tuyere installed on a metallurgical furnace such as a blast furnace and a cupola used in smelting ores or the like, an arc-like projection part is provided on an upper part of the outer circumference of a tip part of the flat tuyere, or/in addition, a projection part is provided on both sides of the outer circumference of the blast tuyere in the direction of a deadman along the central axis of the tuyere, and hard facing is performed on upper surfaces of the projection parts. COPYRIGHT: (C)2003,JPO

16. 发明专利

JP2003171706A REFRACTORY STRUCTURE OF TUYERE PART FOR METALLURGICAL FURNACE 审中-公开
公开(公告)号：JP2003171706A
公开(公告)日：2003-06-20
申请号：JP2001375314
申请日：2001-12-10
申请人： NIPPON STEEL CORP
发明人： OKUDA TAKAAKI , MORIMITSU HIROTOMO
IPC分类号： C21B7/06 , F27B1/14
摘要： PROBLEM TO BE SOLVED: To provide a refractory structure which is used in a metallurgical furnace such as a smelting furnace and a cupola used in smelting ores or the like to prolong the service life of a tuyere by preventing direct fall of high- temperature contents in the furnace on the upper surface of circumferential surface of the tuyere. SOLUTION: In the refractory structure of the tuyere for the metallurgical furnace, the tuyere 1 is provided to blow hot air into the metallurgical furnace to smelt ores or the like. In the refractory structure 4 constructed around the tuyere, the refractory 5 on an upper part or the circumference of the tuyere is protruded from the inner surface of a furnace wall into the inside of the furnace so as to cover the upper part of the tuyere. COPYRIGHT: (C)2003,JPO

17. 发明专利

JP2002129213A COOLING PANEL FOR FURNACE WALL OF BLAST FURNACE 失效
公开(公告)号：JP2002129213A
公开(公告)日：2002-05-09
申请号：JP2000329316
申请日：2000-10-27
申请人： NIPPON STEEL CORP
发明人： OKUDA TAKAAKI , MORIMITSU HIROTOMO , IDA NORIAKI
IPC分类号： C21B7/10 , F27B9/16 , F27D3/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling panel for furnace wall of a blast furnace which is easily manufactured at lighter weight and lower cost in comparison with a stave cooler and unnecessary to weld on a coolant path extremely low danger to water leakage and low pressure loss of the cooling water, and does not cause the stagnation of water, and can omit and expandable tube and shorten the length of piping passing the coolant, in the cooling device for furnace wall used for cooling the furnace wall, etc., in the blast furnace. SOLUTION: In the cooling panel for furnace wall peripherally arranged on the inner surface of the furnace wall in the blast furnace, the copper or copper alloy-made coolant piping 2 passing the coolant, are disposed, and inserted into cut-off parts cut off so as to match to the coolant piping 2 in a copper or copper alloy-made plate 1 and the jointing lines with the plate, are welded. In the coolant panel, ribs 3, 4 for reinforcing, are arranged.

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