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1. 发明专利

JP2002243372A REFRACTORY MATERIAL SPRAYING APPARATUS AND METHOD THEREFOR 失效
公开(公告)号：JP2002243372A
公开(公告)日：2002-08-28
申请号：JP2001038352
申请日：2001-02-15
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , TAKAGAKI NORIYOSHI , SHIMOMURA AKIO , MAEHARA TERUO , INOUE TAKASHI
IPC分类号： B05B15/10 , B05B12/08 , B05B13/04 , B05D3/00 , B05D7/00 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a refractory material spraying apparatus and a refractory material spraying method in which an amount of spraying can be controlled in response to an adhered state of the spraying material, its rebound loss can be reduced, and a thickness of a worked member can be made constant. SOLUTION: There is provided a spraying apparatus comprising a running boggie 4 which can freely run; a lateral running boggie 7 which can run in a direction substantially perpendicular to a running direction of the running boggie; a lift frame 13 arranged at the lateral running boggie 7 in such a way that it can be turned and ascended or descended; a material supplying pipe 19 fixed to the lift frame; and a spraying nozzle 23 for discharging sprayed material supplied by the material supplying pipe. A distance meter 40 is arranged one by one at both sides in a moving direction of the spraying nozzle with the spraying nozzle being held. The spraying operation is carried out while a position of the spraying nozzle is being automatically controlled in response to a measured value measured by the distance meter, in such a way that a distance between the spraying nozzle and a repaired surface may become constant under application of this spraying apparatus.

2. 发明专利

JPH1088214A STEELMAKING METHOD USING IRON SCRAP 失效
公开(公告)号：JPH1088214A
公开(公告)日：1998-04-07
申请号：JP25746096
申请日：1996-09-06
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , MATSUURA MASAHIRO , ARIYAMA TATSURO , TAGUCHI NORIHIKO , MAKI TOSHIMICHI , WATABE MASAYUKI
IPC分类号： C21B11/02 , C21B13/12
摘要： PROBLEM TO BE SOLVED: To provide a producing method of a steel, by which firstly, molten iron from iron scrap and high calory gas used to power generation are obtd. in a cupola and the steel is produced with an electric furnace by using this molten iron as raw material and high calory gas is used as fuel for power generation and the electric power is generated and as a result, the production of steel with the electric furnace can remarkably economically be executed in comparison with the conventional method. SOLUTION: The steelmaking method using the iron scrap, is provided with the following processes. (A) The iron scrap (a) and coke (b) are charged into the cupola 3 from the upper part of the cupola 3 and gaseous oxygen (e) or the gaseous oxygen and the air and >=100kg/ton of iron scrap (a) of carbonaceous material (d) are injected from tuyeres at the lower part of the cupola to burn the carbonaceous material (d), and the iron scrap (a) is made to the molten iron and exhaust gas (m) having >=1500Kcal/Nm calorific value is recovered from the upper part of the cupola. (B) The molten iron is used as a part of iron raw material and the steel is produced in the electric furnace. (C) The exhaust gas (m) is used as the fuel in a boiler 20 for power generation. As the carbonaceous material, the pulverized fine coal is desirable and as the coke, the coke for blast furnace is desirable.

3. 发明专利

JPH1171607A OPERATION OF SHAFT FURNACE 失效
公开(公告)号：JPH1171607A
公开(公告)日：1999-03-16
申请号：JP24776397
申请日：1997-08-28
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , MATSUURA MASAHIRO , NODA HIDETOSHI , ARIYAMA TATSURO
IPC分类号： C21B11/02
摘要： PROBLEM TO BE SOLVED: To prevent adhesion and deposition of dust in the vicinity of a raw material charging side of a top part, to smoothly lower the top charged stuff, and to appropriately keep the in-furnace permeability in the operation of a shaft furnace of a material seal structure. SOLUTION: In manufacturing a hot metal by charging iron source raw material, cokes and sub raw materials to a top part of a shaft furnace, air is fed through a lower tuyere part, and the iron source raw material is molten by the combustion heat of cokes and/or carbon material to be blown through the tuyere part, the ratio [Vs/Vi] of the throat gas flow speed Vs to the in- furnace upward gas flow speed Vi exceeds 0.5, and the throat gas flow speed Vs is >=1.0 m/sec. in terms of the empty tower standard.

4. 发明专利

JPH0995723A METHOD FOR MELTING SCRAP 失效
公开(公告)号：JPH0995723A
公开(公告)日：1997-04-08
申请号：JP27844595
申请日：1995-10-02
申请人： NIPPON KOKAN KK
发明人： SHIKADA TSUTOMU , KONISHI TAKESHI , NODA HIDETOSHI , INOKUCHI TAKANORI , ARIYAMA TATSURO
IPC分类号： C21B5/00 , C21B5/02 , C21B7/00 , C21B11/02
摘要： PROBLEM TO BE SOLVED: To provide a scrap melting method which produces molten iron by melting the scrap in high efficiency while contriving a high-volume treatment and effective utilization of synthetic resin material and can produce a large quantity of exhaust gas having high calory and high utilizing value as gas for fuel and can execute the operation in a low manufacturing cost. SOLUTION: The scrap as iron source and coke are charged into a shaft furnace, and pulverized fine coal and the synthetic resin material are blown from a combustion burner arranged in a tuyere part 2 and also, oxygen is blown from the circumference thereof and both are mixed in the high efficiency to rapidly burn the pulverized fine coal and the synthetic resin material. The scrap is melted with sensible heat of this combustion gas to produce the molten iron and also, the combustion gas is recovered as the gas for fuel without significantly executing second combustion in the furnace.

5. 发明专利

JPH0949009A VERTICAL FURNACE 失效
公开(公告)号：JPH0949009A
公开(公告)日：1997-02-18
申请号：JP20232295
申请日：1995-08-08
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , ARIYAMA TATSURO , NODA HIDETOSHI , MATSUURA MASAHIRO , SUMIKAMA TAKASHI , YAMAKAWA YUICHI
IPC分类号： C21B11/02 , F27B1/08 , F27B1/20
摘要： PROBLEM TO BE SOLVED: To prevent the leakage of top gas and to recover fuel gas with a high yield by arranging a space chamber kept at higher pressure than the pressure in a furnace and low temp. On a furnace top part, at the time of recovering the top gas from a furnace opening part of a vertical furnace. SOLUTION: At the time of producing molten iron by melting iron raw material in the vertical furnace 1, the top gas is recovered with recovering tubes 5b from top gas take-out holes 5a through the upper end surface 9b of the charged raw material in the furnace opening part (a B part). At this time, in the furnace top part (a C part), the space chamber 7 constituted wit a side wall 8, a turning type seal valve 10 and the upper end surface 9b of the charged raw material, is provided and non-combustible gas of gaseous N2 , etc., is blown through a gas supplying pipe 11, and the pressure in the space chamber 7 is held higher than the pressure in the furnace. By this method, even when the high temp. top gas is recovered for a long time, it is prevented that the top gas enters the space chamber 7 and the space chamber 7 is held at a low temp.

6. 发明专利

JPH1161211A OPERATION OF BLAST FURNACE 失效
公开(公告)号：JPH1161211A
公开(公告)日：1999-03-05
申请号：JP22052397
申请日：1997-08-15
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , ARIYAMA TATSURO , SAKAMOTO NOBORU , NODA HIDETOSHI , ICHIKAWA KOICHI
IPC分类号： C21B5/00
摘要： PROBLEM TO BE SOLVED: To restrain the lowering of ventilation in a blast furnace accompanied with the reduction powdering in the case of using extra-low SiO2 ( =100 kg/t-pig. At this time, the average value of SiO2 content in two or more kinds of sintered ores having different SiO2 contents, is set at =100 kg/t-pig. Desirably, at least one kind of the sintered ore having =50 wt.% in the total sintered one. The producing cost is reduced by lowering the main raw material ratio and the coke ratio.

7. 发明专利

JPH09209016A OPERATION OF IRON SCRAP MELTING FURNACE 失效
公开(公告)号：JPH09209016A
公开(公告)日：1997-08-12
申请号：JP1540596
申请日：1996-01-31
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , MATSUURA MASAHIRO , MURAI RYOTA , NODA HIDETOSHI , ARIYAMA TATSURO
IPC分类号： B09B3/00 , C21B5/02 , C21B11/02 , F27B1/08
摘要： PROBLEM TO BE SOLVED: To quickly recover and correct molten iron temp. by blowing powdery and granular solid fuel together with gaseous oxygen from a tuyere part of a shaft furnace and decreasing or increasing the fuel having rapid combustibility according to the lowering or the raising tendency of the molten iron temp. SOLUTION: The powdery and granular solid fuel of pulverized coal, synthetic resin material, etc., as an inexpensive alternate fuel together with the gaseous oxygen are blown from the tuyere part of the shaft furnace and burned. This combustion heat is utilized as the main heat source, and iron scrap is melted to obtain the molten iron. At this time, the powdery and granular solid fuel is constituted with two or more kinds having different combustible characteristics. During operation of the iron scrap melting furnace, at the time of showing the lowering tendency of the molten iron temp., the ratio of the fuel having more rapid combustibility occupied in the blowing quantity of the powdery and granular solid fuel is decreased. On the other hand, at the time of showing the raising tendency of the molten iron temp., this ratio is increased so as not to disturb the heat balance. By this method, the position of the max. combustion temp. of this fuel is adjusted and the molten iron temp. is recovered and corrected, and the operation of the melting furnace is stabilized.

8. 发明专利

JPH09194915A COMBUSTION BURNER USED FOR METALLURGICAL FURNACE 失效
公开(公告)号：JPH09194915A
公开(公告)日：1997-07-29
申请号：JP2052196
申请日：1996-01-11
申请人： NIPPON KOKAN KK , KAWASAKI HEAVY IND LTD
发明人： MURAI RYOTA , ARIYAMA TATSURO , NODA HIDETOSHI , MATSUURA MASAHIRO , INOKUCHI TAKANORI , NOZOE SHUNPEI , KIMURA KENJI , HARADA HIDEKAZU
IPC分类号： F23D1/00 , C21B5/02 , C21B7/00
摘要： PROBLEM TO BE SOLVED: To efficiently burn bulky solid fuel of synthetic resin material, etc., supplied from a tuyere part of a metallurgical furnace and further, to suitably burn the bulky solid fuel, too while burning powdery and granular solid fuel such as pulverized fine coal, etc., at high efficiency in a melting furnace for iron-making. SOLUTION: In a combustion burner A arranged in the tuyere part B at the lower part of a shaft furnace, a pre-combustion chamber 1 is disposed inside a top opening hole part 2 and also, a charging hole for charging the bulky solid fuel into the pre-combustion chamber 1 is formed. This combustion burner has a structure having oxygen blowing holes (a) inside the pre-combustion chamber or a solid fuel injection hole arranged at the center of the burner diameter direction or this neighborhood thereof and the oxygen blowing holes (a) arranged at the surrounding thereof or the oxygen blowing hole (a) arranged at the center of the burner diameter direction or neighborhood thereof and the solid fuel injecting hole arranged at the surrounding thereof and further, the oxygen blowing holes (a) arranged at the surrounding of the solid fuel injecting hole. The bulky solid fuel is quickly burned at the high efficiency with the supplied oxygen in the pre-combustion chamber 1 and gasified by burning.

9. 发明专利

JPH09184005A METHOD FOR CHARGING SCRAP INTO SHAFT MELTING FURNACE 失效
公开(公告)号：JPH09184005A
公开(公告)日：1997-07-15
申请号：JP34330395
申请日：1995-12-28
申请人： NIPPON KOKAN KK
发明人： MATSUURA MASAHIRO , ARIYAMA TATSURO , NODA HIDETOSHI , INOKUCHI TAKANORI , MURAI RYOTA
IPC分类号： C21B11/02 , F27B1/26 , F27D19/00
摘要： PROBLEM TO BE SOLVED: To uniformize the filling ratio scrap to be filled by charging a prescribed size of the scrap into a part having gas temp. on the charged surface higher by a specific temp. than a reference value. SOLUTION: In order to beforehand inform an operator of the gas temp. pattern on the charged surface 4 at the time of executing the normal operation, the gas temp. on the charged surface 4 is continuously measured with one or more of sondes 3 arranged near the upper part of the charged surface 4 and the measured value is made as a reference value in each point. When the scrap is unevenly mixed and charged, gap is developed near the upper part of the charge surface 4. At this time, since the gas flowing speed at this part becomes high and the heat conduction to the scrap is not executed in good condition, as a result, the gas temp. on the charged surface 4 becomes high, and development of the gap can be detected by measuring this gas temp. Since the gap at this part can be filled by charging the prescribed size of scrap to the part having higher gas temp. than the reference value, the filling ratio of the scrap in the furnace becomes constant.

10. 发明专利

JPH0995725A METHOD FOR MELTING SCRAP 失效
公开(公告)号：JPH0995725A
公开(公告)日：1997-04-08
申请号：JP27844795
申请日：1995-10-02
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , NODA HIDETOSHI , ARIYAMA TATSURO , MATSUURA MASAHIRO , MURAI RYOTA
IPC分类号： C21B5/00 , C21B5/02 , C21B7/00 , C21B11/02
摘要： PROBLEM TO BE SOLVED: To provide a scrap melting method which produces molten iron by melting the scrap in high efficiency while contriving a treatment of a large quantity and effective utilization of synthetic resin material and dust, etc., and can produce a large quantity of exhaust gas having high calory and high utilizing value as gas for fuel and can execute the operation in a manufacturing low cost. SOLUTION: The scrap as iron source, coke and the synthetic resin material are charged into a shaft furnace from the furnace top, and the dust, etc., and pulverized fine coal or the pulverized fine coal and the synthetic resin material are blown from a combustion burner arranged in a tuyere part 2 and also, the oxygen is blown from the surround of the pulverized fine coal or the pulverized fine coal and the synthetic resin material, and both are mixed in the high efficiency to rapidly burn the pulverized fine coal or the pulverized fine coal and the synthetic resin material. The scrap is melted with sensible heat of this combustion gas to produce the molten iron and also, the combustion gas is recovered together with gas generated with heat decomposition of the synthetic resin material as the gas for fuel without significantly executing secondary combustion in the furnace.

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