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21. 发明专利

JPH05339609A 失效
公开(公告)号：JPH05339609A
公开(公告)日：1993-12-21
申请号：JP16827092
申请日：1992-06-04
申请人： NIPPON STEEL CORP
发明人： MATSUZAKI SHINROKU , SUGIYAMA TAKASHI
IPC分类号： C21B5/00 , C21B7/20 , F27B1/20 , F27D3/16
摘要： PURPOSE:To solve the problem of the restriction in the selection width for control of the conventional bell-less charging method in the charging method for a vertical furnace, such as blast furnace or the grain size segregation in the bell-less charging method. CONSTITUTION:The falling loci 3 of the charge in the vertical furnace, such as blast furnace, are controlled by blowing air or inert gas to the falling charge and regulating the position where the gas is blown at this time and the amt. and flow velocity of the gas at the time of charging the charge into the vertical furnace.

22. 发明专利

JPH0428807A METHOD FOR OPERATING BLAST FURNACE 失效
公开(公告)号：JPH0428807A
公开(公告)日：1992-01-31
申请号：JP13612690
申请日：1990-05-25
申请人： NIPPON STEEL CORP
发明人： SUGIYAMA TAKASHI
IPC分类号： C21B5/00
摘要： PURPOSE:To remove powder in inactive zone and to operate a blast furnace under normal condition by always measuring the pressure difference between belly part and tuyere in the blast furnace, detecting the inactive phenomenon in the lower part of the furnace and controlling amt. of blowing moisture. CONSTITUTION:The pressure difference between a pressure detector 9 arranged at the belly part 13 and a tuyere pressure detector 10 in the blast furnace 1, is always measured to detect the inactive phenomenon in the lower part of furnace. On the basis of a ratio of the theoretical pressure loss to the actual pressure loss, amt. of the blowing moisture in blasting, temp. condition and blasting condition in the tuyere 2, the necessary quantity of blowing moisture is calculated with a computer 12. This quantity of moisture is added from a blowing device 11 to make the moisture in furnace core 3 the necessary quantity and powderizing ratio of coke in the furnace core 3 is drastically reduced.

23. 发明专利

JPS61210108A METHOD FOR CONTROLLING SI CONCENTRATION IN MOLTEN IRON 失效
公开(公告)号：JPS61210108A
公开(公告)日：1986-09-18
申请号：JP4927285
申请日：1985-03-14
申请人： NIPPON STEEL CORP
发明人： SUGATA MASAYASU , SUGIYAMA TAKASHI , SATO YUJI
IPC分类号： C21B5/00 , C21B5/02
摘要： PURPOSE:To control Si concentration in molten iron without hindering operation by measuring the temp. at the part right under a tuyere and by controlling, according to the measured value, the FeO quantity of iron oxide to be fed to the lower part of a raceway and to the tip of the lower part. CONSTITUTION:A thermometer 5 is attached to furnace wall bricks 4, under the tuyere 1, to measure the temp. The addition of the iron oxide is carried out by controlling the FeO quantity to be fed to the lower part of the raceway 2 and to the tip of the lower part according to the measured value of the temp. In this way, the operation is stabilized and the Si concentration in the molten iron can be controlled.

24. 发明专利

JPS61210107A METHOD FOR CONTROLLING SI CONCENTRATION IN MOLTEN IRON 失效
公开(公告)号：JPS61210107A
公开(公告)日：1986-09-18
申请号：JP4927185
申请日：1985-03-14
申请人： NIPPON STEEL CORP
发明人： SUGATA MASAYASU , SUGIYAMA TAKASHI , SATO YUJI
IPC分类号： C21B5/00 , C21B5/02
摘要： PURPOSE:To control Si concentration in molten iron without reducing the temp. in a furnace by measuring Si concentration in molten iron and by controlling, according to the measured value, the FeO quantity of iron oxide to be fed to the lower part of a raceway and the tip of the lower part. CONSTITUTION:The Si concentration in the molten iron is measured and according to the measured value, the FeO quantity of the iron oxide 6 to be fed to the lower part of the raceway 2 and to the tip of the lower part is controlled, and then the iron oxide 6 is fed via a tuyere 1 through a blowing nozzle 4. In this way, the oxidative reaction of Si takes place in the molten iron and Si in the molten iron can be reduced.

25. 发明专利

JPS5282607A REGULATION OF RACE WAY IN BLAST FURNACE 失效
公开(公告)号：JPS5282607A
公开(公告)日：1977-07-11
申请号：JP15680275
申请日：1975-12-30
申请人： NIPPON STEEL CORP
发明人： NAKAMURA MASAKAZU , SUGIYAMA TAKASHI
IPC分类号： C21B5/00 , C21B7/16
摘要： PURPOSE:To keep optimum the furnace condition without changing the quantity of air blast, the combination of a diameter of a tuyere and the direction of the tuyere by merely changing the position of a lance for blowing heavy oil which is blown from the tuyere in a blast furnace and the blow conditions.

26. 发明专利

JP2001329800A METHOD FOR SUPPLYING SEGMENT IN LAYING GAS PIPE 失效
公开(公告)号：JP2001329800A
公开(公告)日：2001-11-30
申请号：JP2000148450
申请日：2000-05-19
申请人： NIPPON STEEL CORP , OKUMURA CORP
发明人： HASEGAWA HISASHI , OSHIMA TOSHIKAZU , SUGIYAMA TAKASHI , UEMATSU KATSUYUKI , ITO HIROMOTO
IPC分类号： E21D11/40 , E21F13/02 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide a method for supplying segments, allowing the segments to be carried into the shield machine side through a narrow space part at the side of a gas pipe in laying the gas pipe in a tunnel abreast with boring the tunnel, and allowing segment lining along with boring of the shield machine even during work of welding the gas pipes to each other. SOLUTION: A conveying truck with several segments loaded in a vertically placed state travels on a rail parallel with a gas pipe laid in the tunnel, to convey the segments to a segment stock part behind the shield machine, and the segments on the conveying truck are transferred onto a set-off truck behind the segment stock part. The segments on the set-off truck are then lifted by a lifting device travelable in the longitudinal direction, and loaded in many rows at the segment stock part. Since the conveying truck cannot travel during work of welding the gas pipes to each other, the segments stocked in the segment stock part is fed into the shield machine side and assembled along with boring the tunnel.

27. 发明专利

JP2001329798A METHOD FOR ASSEMBLING SEGMENT 失效
公开(公告)号：JP2001329798A
公开(公告)日：2001-11-30
申请号：JP2000148449
申请日：2000-05-19
申请人： NIPPON STEEL CORP , OKUMURA CORP
发明人： HASEGAWA HISASHI , OSHIMA TOSHIKAZU , SUGIYAMA TAKASHI , NAGAE TOSHIO , WADA HIROSHI
IPC分类号： E21D11/40 , E21D11/04
摘要： PROBLEM TO BE SOLVED: To provide a method for assembling segments, shortening a tunnel construction time by efficiently carrying out assembly work in the method of assembling the segments to an excavated wall surface every excavation of a tunnel of fixed length by a shield machine. SOLUTION: Segment lining is formed by repeating a process of excavating the tunnel of fixed length wherein segments of two ring portion can be assembled by elongating a shield jack with a stroke of length double the width of a segment equivalent to the length direction of the tunnel, to advance the shield machine, and a process of batch-assembling the segments of two front and rear ring portion using an erector disposed movably in longitudinal and circumferential directions in a rear shell part of the shield machine.

28. 发明专利

JPH08176621A FOR CHARGING OF SOLID MATERIAL INTO BLAST FURNACE AND DEVICE THEREFOR 失效
公开(公告)号：JPH08176621A
公开(公告)日：1996-07-09
申请号：JP33463694
申请日：1994-12-20
申请人： NIPPON STEEL CORP
发明人： SUGIYAMA TAKASHI
IPC分类号： C21B5/00 , C21B5/02
摘要： PURPOSE: To use a special raw material in a blast furnace by directly charging the special raw material such as powdery raw material of scrap, plastic waste material, formed coke, municipal refuse, iron or coke into a packed layer of coke or iron ore in the blast furnace. CONSTITUTION: After a pipe 4 for charging device provided at the outside of the furnace at the upper part of a shaft part of the blast furnace 1 is inserted into the packed layer of the coke or the iron ore in the blast furnace through an opening part provided on the iron shell at the upper part of the shaft part of the blast furnace, the special raw material 18 is pushed into the packed layer of the coke or the iron ore from the pipe 4.

29. 发明专利

JPH0718313A OPERATION OF VERTICAL FURNACE 失效
公开(公告)号：JPH0718313A
公开(公告)日：1995-01-20
申请号：JP19187393
申请日：1993-07-07
申请人： NIPPON STEEL CORP
发明人： SUGIYAMA TAKASHI
IPC分类号： C21B5/00
摘要： PURPOSE:To keep ventilation satisfactory in condition and to stably operate a furnace by adjusting grain diameter of fine powder, gas flowing rate, grain diameter of a packing layer, blowing rate of the fine powder, etc., in a vertical furnace and controlling the reducing value of a space ratio to the control value of below. CONSTITUTION:Into the vertical furnace 1 packed with the grains 4, the fine powder 6 from a fine powder blowing part 3 is blown together with the gas from a gas blowing part 2 to allow to react the grain 4 and fine powder 6 with gas. At this time, a holding up quantity rhok of the fine powder in the furnace is estimated by using the equation rhok=(mu /4.436X10 rhog.g)(Ug/ g-Dg) ) *(Dk/D ) (Gko/Gg) *10 (wherein, mu: gas viscosity, rhog: gas density, g: gravity acceleration, Ug: gas flowing velocity, Dp: grain diameter of grains in the packing layer, Dk: grain diameter of fine powder, Gko: mass velocity of the fine powder, Gg: mass velocity of the gas). Successively, the reduction DELTAepsilon of the space ratio is calculated by using the equation DELTAepsilon=epsilono(rhok/rhoko) (wherein, rhoko: the hold up quantity of the fine powder, epsilono: the space ratio of the packing layer). This DELTAepsilon is controlled to the control value alpha or below.

30. 发明专利

JPH05295413A 失效
公开(公告)号：JPH05295413A
公开(公告)日：1993-11-09
申请号：JP12933292
申请日：1992-04-23
申请人： NIPPON STEEL CORP
发明人： SUGIYAMA TAKASHI , MATSUZAKI SHINROKU
IPC分类号： C21B5/00 , C21B7/24
摘要： PURPOSE:To provide a detecting method of gas flowing speed in a blast furnace even in the bad condition. CONSTITUTION:A pressure measuring hole 1 is additionally arranged to the ordinary gas sampling hole and temp. measuring part in a shaft sonde arranged at a shaft part in the blast furnace and in the inner part thereof, a pressure sensor 2 is fitted, and the signal obtd. from this pressure sensor is electronically treated and read out as the micro pressure component. As the amplitude of the micro pressure has the linear relation with gas linear speed, by detecting the amplitude of this micro pressure, the gas flowing speed there can be known.

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