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1. 发明专利

JPH01123013A METHOD AND DEVICE FOR FEEDING RAW MATERIAL 失效
公开(公告)号：JPH01123013A
公开(公告)日：1989-05-16
申请号：JP28163287
申请日：1987-11-06
申请人： NIPPON STEEL CORP
发明人： INASUMI TADAHIRO , FUJIMOTO MASAMI , SUGATA MASAYASU
IPC分类号： C21B5/00 , C21B7/20
摘要： PURPOSE:To make distribution of grain size in the raw material in a furnace to radius direction suitable and to stabilize the furnace condition of blast furnace by sieving the raw material dropping from the upper part with bar screen in the raw material feeding device at furnace top part in the blast furnace. CONSTITUTION:At the time of feeding the raw material from a swinging chute type feeding device 2 as the raw material device in the blast furnace, the gate 10 and the opening part 4 are arranged near the lower end of the swinging chute 2 and also plural bars 5 are fitted to the opening part 4 along the width direction of the swinging chute 2. A part of the raw material 3 flowing down along inclining face of the swinging chute is passed through the bars 5 and dropped downward. The bar screen 6 is fitted to the swinging chute 2 at lower part of the opening part 4 and the plural bar materials 7 are arranged so that the inclined angle of each bar differ. As the raw material dropped from the opening part 4 is dropped in accordance with mutual between the bar materials 7, the furnace core side II is made to fine grain layer I and the outer peripheral side III is made to coarse grain layer and gas permeable condition in the furnace is stabilized and the operation in the blast furnace is satisfactorily executed.

2. 发明专利

JPS579837A PRETREATMENT OF STARTING MATERIAL FOR SINTERING 失效
公开(公告)号：JPS579837A
公开(公告)日：1982-01-19
申请号：JP8356080
申请日：1980-06-20
申请人： NIPPON STEEL CORP
发明人： KASE MASAJI , SUGATA MASAYASU , UMETSU YOSHINORI , TANIGUCHI MASAHIKO
IPC分类号： C22B1/16
摘要： PURPOSE:To reduce the consumption of solid carbon during sintering by granulating carbon powder as starting material for sintering to a specified grain size form so as to make the thickness of fine ore covering solid carbon powder smaller when the carbon powder is mixed with fine ore and controlled in humidity. CONSTITUTION:Solid carbon powder in which average grain size D of true particles in mm. unit; 5-0.25, >2D; 0-90%, 2D-0.5D; 0-90% and 0.5D to 5-200% and the average grain size of pseudogranules to >=1.05. The granulated carbon is then mixed with fine ore, controlled in himidity and sintered.

3. 发明专利

JPS56105404A DECISION OF FURNACE CONDITION OF SHAFT FURNACE 失效
公开(公告)号：JPS56105404A
公开(公告)日：1981-08-21
申请号：JP638080
申请日：1980-01-24
申请人： NIPPON STEEL CORP
发明人： KASE MASAJI , SUGATA MASAYASU , YAMAGUCHI KAZUYOSHI , NAKAGOME MICHIJI , NISHIKAWA HIROSHI , ANAMI YASUHIKO
IPC分类号： C21B7/24
摘要： PURPOSE:To permit to decide the furnace condition quantitatively by a method wherein a high speed shutter camera is provided to take continuous photograph of an servation probe attached to the tip of an air sending tuyere of the shaft furnace and coke particles is continuously photographed by said shutter camera to count the number of coke particles passing through the field of vision within a preliminarily determined definite time. CONSTITUTION:The high speed shutter camera 3 is provided to the water cooled probe 2 attached to a viewing window 1 of the tuyere. The field angle of the camera is 30 deg. or more and it is desirable that a focus depth is deeper, for example, l is adjusted to 2m or more. Herein, the coke particles passing through the field of view within preliminarily determined definite time is continuously photographed to count the number of coke particles. A shutter speed is adjusted to about 1/7,500sec. Thereby, the deviation of a counted value from a normal value is calculated to estimate the furnace condition.

4. 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.

5. 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.

6. 发明专利

JPS6277413A METHOD FOR CONTROLLING POSITION OF WELDED ZONE OF BLAST FURNACE 失效
公开(公告)号：JPS6277413A
公开(公告)日：1987-04-09
申请号：JP21773485
申请日：1985-09-30
申请人： NIPPON STEEL CORP
发明人： SUGIYAMA TAKASHI , SUGATA MASAYASU , SUZUKI NOBUKUNI
IPC分类号： C21B5/00
摘要： PURPOSE:To form a stable softened and welded zone and to make a smooth blast furnace operation by inserting sondes into the barrel part of a blast furnace, determining the into the barrel part of a blast furnace, determining the upper and lower positions of the welded zone from the values actually measured therewith and controlling the layer thickness distribution in the radial direction of charge in accordance therewith. CONSTITUTION:>=1 Pieces of the sondes are inserted into the blast furnace from the belly part 2 thereof. The results of the measurement therewith are fed via a mechanism 10 for measuring gas conc. and a mechanism 11 for measuring gas. solid temp. to an arithmetic unit 12, by which the upper and lower positions of the welded zone are determined. The mode of the charging quantity analysis of the ore and coke is determined by a mechanism 13 for distributing O/C in accordance with the result thereof. As a result, the distribution of the layer thickness ratio in the radial direction of a coke layer 7 and ore layer 8 at the furnace top and the grain size distribution thereof are controlled by operating a device 14 for controlling the charging of the raw material. The shape of the welded zone meeting the operation at the present point of the time is thereby created and a smooth blast furnace operation is realized.

7. 发明专利

JPS61213307A METHOD FOR CONTROLLING CONCENTRATION OF SI IN MOLTEN PIG IRON 失效
公开(公告)号：JPS61213307A
公开(公告)日：1986-09-22
申请号：JP5251785
申请日：1985-03-18
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 efficiently the concn. of Si in molten pig iron by measuring the concn. of Si in the molten pig iron and controlling the distribution of a charge in accordance with the measured value so that the amount of FeO from iron oxide fed to the lower part of a raceway and the tip part of the lower part is made larger than the amount of FeO from iron oxide fed to the other part. CONSTITUTION:The concn. of Si in molten pig iron is measured. In accordance with the measured value, the distribution of iron ore charged is changed so that the amount of FeO from iron oxide fed to the lower part of a raceway and the tip part of the lower part is made larger than the amount of FeO from iron oxide fed to the other part. Thus, FeO is reacted with Si in the molten pig iron to control the concn. of Si in the molten pig iron.

8. 发明专利

JPS57169004A OBSERVING METHOD FOR INSIDE OF BLAST FURNACE 失效
公开(公告)号：JPS57169004A
公开(公告)日：1982-10-18
申请号：JP5394281
申请日：1981-04-10
申请人： NIPPON STEEL CORP
发明人： SUGATA MASAYASU , OOKUBO NAOTAKE , YAMAGUCHI KAZUYOSHI , NISHIKAWA HIROSHI , NAKAGOME MICHIJI
IPC分类号： C21B7/24 , F27D21/02 , G03B37/00 , G03B39/00
摘要： PURPOSE:To observe operating conditions in the inside of a blast furnace in details and to control the combustion of coke, etc. easily by inserting a scope into the blast furcace, photographing high speed moving objects at an ultrahigh speed, drawing frames at constant intervals and processing the same to continuous visual images to obtain a moving picture image. CONSTITUTION:A spcope 12 is inserted through the blast supporting pipe of a blast furnace, and high speed moving objects are photographed continuously with a camera 13 by using an ultrahigh speed shutter having >=10 sec. shutter function and >=10 amplification function. The photographed film thereof is fed via a color processing part 15 or the like to a video sheet recorder 18. Timing signals are fed from a system control part 23 thereto to process only the frames drawn at constant intervals from the max. photographing frame number to continuous visible videos which are projected in a color monitor 24. Thereby, the loci of scattered coke particles, etc. are traced visually easily.

9. 发明专利

JPS56105405A DECISION OF FURNACE CONDITION OF SHAFT FURNACE 失效
公开(公告)号：JPS56105405A
公开(公告)日：1981-08-21
申请号：JP638180
申请日：1980-01-24
申请人： NIPPON STEEL CORP
发明人： SUGATA MASAYASU , YAMAGUCHI KAZUYOSHI , NAKAGOME MICHIJI , NISHIKAWA HIROSHI , ANAMI YASUHIKO
IPC分类号： C21B7/24
摘要： PURPOSE:To permit to decide behavior of a fusion zone above a tuyere of a shaft furnace by a method wherein coke particles are continuously photographed by a high speed shutter camera provided to a probe at a tip of an air sending tuyere of the shaft furnace and the coke particles passing through the field of vision within a preliminarily set time are classified to bright and dark and count a passing ratio. CONSTITUTION:The high speed shutter cemera 11 is provided to the water cooled probe 10 attached to a viewing window 9 of the tuyere 9. A field angle of the camera 11 is 30 deg. or more and it is desirable that a focus depth is deeper, for example, l is adjusted to 2m or more. The coke particles passing through the field of view within the preliminarily determined definite time are continuously photographed and classified to bright and dark and count the passing ratio of each classified kinds. A shutter speed is controlled to about 1/7,500sec. By this passing ratio, the behavior of the fusion zone about the tuyere of the shaft furnace is estimated.

10. 发明专利

JPS62222008A TREATMENT FOR ADDING ADDITIVE TO MOLTEN METAL 失效
公开(公告)号：JPS62222008A
公开(公告)日：1987-09-30
申请号：JP6356786
申请日：1986-03-20
申请人： NIPPON STEEL CORP
发明人： HORIO TAKEHIRO , MATSUO MASATAKA , SUGATA MASAYASU , ONO KATSUYA
IPC分类号： C21C1/00 , C21C1/02 , C21C7/04
摘要： PURPOSE:To increase a treatment reaction rate and reaction efficiency and to stably obtain a high-grade molten metal by injecting an additive in a heated or molten state into the molten metal. CONSTITUTION:A molten iron 5 and slag gapped from a tap hole 2 of a blast furnace 1 are subjected to a sepn. of the slag by a skimmer 3 and such molten iron 5 is allowed to flow in a molten iron 5 branch spout 4 in the case of a dephosphorization treatment in the molten iron spout. A dehosphorizing agent 8 heated and melted by a thermal spraying burner lance 6 is blown to the molten iron 5 from above the molten iron 5 and while the dephosphorization reaction is induced by the dephosphorizing agent 8 incorporated into the flow of the molten iron 5, the molten iron is run toward the down stream of the branch spout 4. This method is applicable not only to the dephosphorization treatment in the hearth of the blast furnace 1 but also to a preliminary treatment such as dephosphorization in a molten iron pan and torpedo car and other treatments by powder blowing. The method is further widely utilizable for component adjustment, etc.,in a molten metal except the molten iron 5.

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