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1. 发明专利

JPH05286574A 失效
公开(公告)号：JPH05286574A
公开(公告)日：1993-11-02
申请号：JP11990592
申请日：1992-04-15
申请人： NIPPON STEEL CORP
发明人： AMAKAWA KAZUHIKO , KASAHARA KANEO , NOZAKI TATEO , MATSUNAGA SHINICHI , SAITO MASAHIRO
IPC分类号： B65G65/30 , B65G61/00 , B65G65/34 , G01F23/28
摘要： PURPOSE:To eliminate the phenomenon of causing a remarkable recess in the center of an ore storage tank, and prevent a decline of the supplying capacity of ores or the like by measuring the inventory level at the center part and the side wall part, obtaining the difference between the measured values, and ejecting the compressed air from the side wall of the ore storage tank into the ore storage tank when the difference reaches or exceeds the reference value. CONSTITUTION:Ultrasonic level systems 1, 2 are provided to the upper part of an ore storage tank 11, and the inventory level of ores or the like in the ore storage tank is measured at two points in the radial direction in the vicinity of the center part and the side wall part of the ore storage tank. The heap shape of the ores or the like which is sorted in the ore storage tank is judged by obtaining the difference between the measured values a, b. In particular, when the ores or the like are carried out of the ore storage tank, the center part gets depressed to form a recessed shape, and the degree of the recess can be known from the difference between the measured values, and the recess is eliminated when the value of the recess exceeds the pre-determined reference value. Thus, the compressed air is ejected into the tank from ore-storage tank compressed air reservoirs 3-8 which are provided stepwise on the outer side wall of the ore storage tank to collapse the ores or the like on the wall surface of the ore storage tank, leading to elimination of the recess in the center part of the ore storage tank.

2. 发明专利

JPS60228612A CONTINUOUS DESILICONIZING METHOD OF MOLTEN IRON 失效
公开(公告)号：JPS60228612A
公开(公告)日：1985-11-13
申请号：JP8350684
申请日：1984-04-25
申请人： NIPPON STEEL CORP
发明人： FURUKAWA TAKASHI , NAGATA SHIYUNSUKE , ANAMI YASUHIKO , NOZAKI TATEO
IPC分类号： B22D37/00 , B22D43/00 , C21C1/04
摘要： PURPOSE:To stabilize an operation and to improve the productivity by discharging continuously the foaming slag overflowing from the receiving port of a mixer car when a molten iron added with a desiliconizing agent is charged into the mixer car by means of a slag outflow guide. CONSTITUTION:The molten metal added with the desiliconizing agent in a molten iron spout 1 is stirred and mixed in an inclined spout 2 and while a desiliconization reaction is progressed, the molten iron is charged together with a large amt. of the unreacted slag into the mixer car 3 through the receiving port 4 thereof. A larger amt. of the foaming slag is soon generated in the car 3 and begins to overflow from the port 4. The overflowing slag flows down into the slag outflow guide 5 provided preliminarily around the port 4 so that said slag is prevented from sticking to the car 3 and the installations around said car. The foaming slag flowing out of said car is taken out after the slag is treated successively by a junction spout 10, a water-granulating spout 11, a water course 12, a stirring tank 13, a filter 14, a conveyor 16 and a product hopper 17.

3. 发明专利

JPH06306496A METHOD AND DEVICE FOR ADJUSTING AIR PERMEABILITY IN SINTERING LAYER 失效
公开(公告)号：JPH06306496A
公开(公告)日：1994-11-01
申请号：JP11922093
申请日：1993-04-23
申请人： NIPPON STEEL CORP
发明人： NOZAKI TATEO , INASUMI TADAHIRO , MATSUNAGA SHINICHI , NAKAYASU TSUTOMU
IPC分类号： C22B1/20 , C22B1/16 , F27B21/08
摘要： PURPOSE:To stably improve the air permeability of a sintering layer and to improve the productivity by impressing magnetic field at the bad air permeable position obtained from the air permeable information in the height direction of sintering layer and acting magnetic floating force to sinter cake at the upper layer. CONSTITUTION:Sintering raw material charged into a pallet 2-1 in a sintering machine 2 from a surge hopper 1 through a charging device 3 is ignited on the surface with an ignition furnace 4 together with progressing of the pallet 2-1 and the combustion gas is sucked downward to execute the sintering. In the air suction type sintering method, after starting the sintering at the upper layer part of the raw material, the magnetic field is impressed to the sinter cake completing the sinter on the sintering zone 5, and in the condition of acting the magnetic floating force, the sintering is progressed. At this time, plural sets of the magnetic floating devices 6 are arranged in the running direction of the pallet 2-1 with the suitable interval. Further, to the bad air permeable position obtd. from the permeable information by CT image analyzing, etc., in the height direction of the sintering layer, the magnetic floating force is allowed to act with the device 6.

4. 发明专利

JPH04304326A MANUFACTURE OF SINTERED ORE 失效
公开(公告)号：JPH04304326A
公开(公告)日：1992-10-27
申请号：JP8933391
申请日：1991-03-29
申请人： NIPPON STEEL CORP
发明人： YAMAGUCHI KAZUNARI , NAKAYAMA MASAAKI , KOBAYASHI MASANORI , TERADA TAKASHI , NOZAKI TATEO , FUJIMOTO MASAMI , INASUMI TADAHIRO
IPC分类号： C22B1/16 , C22B1/20 , F27B21/08
摘要： PURPOSE:To achieve high productivity and high yield in a sintering operation by mixing a sintering promoter composed of the specific composition of Fe2O3- CaO-SiO2 speed low m.p. composition and heat source to a sintering raw material packing surface layer at the specific ratio and sintering. CONSTITUTION:The blending raw material 1 in the sintering raw material is taken out from an ore supplying vessel 2 and packed on a pallet through a charging device 3. This sintering raw material packing layer is ignited in an ignition furnace 4 and air is sucked a blast box 5 to execute the sintering. In the Dwight-Lloyd type sintering machine, the sintering promoter is added on the sintering raw material packing surface layer with an adding device 7 between the ore supplying vessel 2 and the ignition furnace 4 at 0.1-0.4% ratio to the blended raw material 1, and after mixing it with a surface mixing device 6, compacting is executed with forming press roller 8. The sintering promoter uses material adding the heat source of powdery coke, etc., to the lower m.p. composition having >=3 CaO/SiO2 and 0.25-0.43 CaO/Fe2O3 and making molten material at 1190-1210 deg.C and having

5. 发明专利

JPS63203213A MANUFACTURE OF HOT ELECTRIC WELDED STEEL TUBE 失效
公开(公告)号：JPS63203213A
公开(公告)日：1988-08-23
申请号：JP3640987
申请日：1987-02-19
申请人： NIPPON STEEL CORP
发明人： ICHIHARA HIROHISA , MOTOMURA TETSUHIKO , SHIZAKI YUKINORI , KOMATSUZAKI YOSHIYUKI , NOZAKI TATEO , SHIMADA YOICHI , ABE MICHIHIRO
IPC分类号： B21B37/78 , B21B37/18 , B21C37/08
摘要： PURPOSE:To obtain the product having different thicknesses from a steel strip by installing a steel strip rolling mill in the preceding stage of a forming device and rolling the strip to have a prescribed thickness from an optional position on the strip in the longitudinal direction of the heated strip. CONSTITUTION:A steep strip 1 is uncoiled from an uncoiler, passes through a looper 2, is heated up to a prescribed temp. by a strip furnace 3, is formed into a tubular shape by a forming device 5 through a steel strip rolling mill 4, and is welded by a high frequency welding device 6 to be a hot electric welded steel tube 1a. The strip 1 is usually rolled to have a max. thickness of products in a tube manufacturing period so as to produce a prescribed amount of hot electric welded steel tube products 1a with that thickness. In the case that the thickness of the succeedingly manufactured tube products becomes thinner than that of the preceding products, the strip 1 is rolled by the rolling mill 4 to have the thickness of the succeeding products and is formed and welded.

6. 发明专利

JPH0331769B2 失效
公开(公告)号：JPH0331769B2
公开(公告)日：1991-05-08
申请号：JP21398887
申请日：1987-08-27
申请人： NIPPON STEEL CORP
发明人： ANAMI YASUHIKO , NOZAKI TATEO , KAMIKO YOSHIO , MORIMATSU MASAKI , TABATA MANABU
IPC分类号： F27B21/10 , C22B1/20

7. 发明专利

JPH02251087A CHARGING DEVICE FOR SINTERING MATERIAL 失效
公开(公告)号：JPH02251087A
公开(公告)日：1990-10-08
申请号：JP7013989
申请日：1989-03-22
申请人： NIPPON STEEL CORP
发明人： SHIMOZAWA EIICHI , IIZUKA YUKIHIKO , NAKAO YASUYUKI , NOZAKI TATEO
IPC分类号： F27B21/10
摘要： PURPOSE:To unify the heat history of a material upon calcining and improve the cold strength as well as the yield of sintered ore by a method wherein the title device is provided with a classifying device, consisting of a plurality of rod bodies arranged in parallel to the flow direction of the material, between a drum feeder, supplying sintering materials, and a chute. CONSTITUTION:A classifying device 9, consisting of a plurality of rod bodies 8 arranged in parallel to the flow direction of materials 5, is provided between a drum feeder 3 and a chute 4. A plurality of stages of the classifying device 9 is preferably provided so that the rod bodies 8 are arranged with up-and-down and left-and-right spaces between each others along the inclination of the chute 4. The materials 5, dispersed by the classifying device 9, are collided against each other and are dispersed further, then, are charged into a pallet 6 through the chute 4. Under the process of charging, bulk materials 5 are loosened perfectly and are charged uniformly in the widthwise direction of the pallet while classifying effect on the chute 4 is maintained stably and the segregation of grain size as well as carbon in the direction of the height of a sintering bed may be maintained stably.

8. 发明专利

JPH01159331A DEVICE FOR CHARGING SINTERING RAW MATERIAL 失效
公开(公告)号：JPH01159331A
公开(公告)日：1989-06-22
申请号：JP21398887
申请日：1987-08-27
申请人： NIPPON STEEL CORP
发明人： ANAMI YASUHIKO , NOZAKI TATEO , KAMIKO YOSHIO , MORIMATSU MASAKI , TABATA MANABU
IPC分类号： F27B21/10 , C22B1/20
摘要： PURPOSE:To produce sintered ore having good quality with high productivity by using an approach chute, slit chute, lower chute, and deflector chute to constitute a sintering raw material charging device of a sintered ore producing plant and providing scrapers to the respective chutes. CONSTITUTION:The sintering raw materials in a hopper 2 are laminated with a drum feeder 3 on a moving pallet 4 of the sintered ore producing plant by a charging chute 9 consisting of the approach chute 5, the slit chute 6, the lower chute 7 and the deflector chute 8 provided to a raw material falling part from the slit chute 6. The scrapers 17, 18 which slide vertically are mounted to the approach chute 5 and the deflector chute 8 and a comb tooth-shaped scraping plate 19 which moves transversely is mounted to the slit chute 6. The scraper 20 which slides transversely is mounted to the lower chute 7. The sintering raw materials sticking to the respective chutes are efficiently removed by the scrapers. In addition, the raw material layers having the grain size segregation and carbon segregation optimum for sintering conditions are formed on the pallet 4. The sintered ore having the excellent quality is thus produced with good productivity.

9. 发明专利

JPH01114692A IGNITION FURNACE FOR SINTERING MACHINE 失效
公开(公告)号：JPH01114692A
公开(公告)日：1989-05-08
申请号：JP27093687
申请日：1987-10-27
申请人： NIPPON STEEL CORP
发明人： ANAMI YASUHIKO , NOZAKI TATEO , KAMIKO YOSHIO
IPC分类号： F27B21/08
摘要： PURPOSE: To achieve an even firing by a method wherein side burners at both end parts are arranged on the side of a ore supply device from the trains of burners at the center while being installed parallel with the inclination of an internal wall of a pallet for transferring material to ignite the surface of the material thoroughly in an ignition furnace. CONSTITUTION: In this ignition furnace 11, a plurality of burners 6 are arranged across the width in the furnace and side burners 7 and 7 provided at both end parts out of them are arranged on the side of an ore supply device from the installing position of the burners 6 while being tilted parallel with the inclination of an internal wall 10 of a pallet 8 for transferring sintering material. The ignition furnace 11 is made up of a frame 1, a ceiling 2 thereof, a side wall 3 thereof, a front wall 4 and a partition wall to partition the ignition furnace 11. In this case, it is desired that the side burners 7 are arranged 400-800 mm on the side of the ore supply device from the burners 6, at 35 deg.-40 deg. to the verticality. The flame radiating distance to the surface of material 9 is set 400-600 mm so that the end of a burner flame is 10-50 mm closer to the center from the internal surface of the internal wall of the pallet.

10. 发明专利

JPS60238407A CASTING BED DESILICONIZING METHOD OF MOLTEN IRON 失效
公开(公告)号：JPS60238407A
公开(公告)日：1985-11-27
申请号：JP9297484
申请日：1984-05-11
申请人： NIPPON STEEL CORP
发明人： ANAMI YASUHIKO , NOZAKI TATEO , NAKAMORI TAKASHI , INOUE MASAE
IPC分类号： C21C1/04
摘要： PURPOSE:To carry out casting bed desiliconization with high treating effect by branching a treating agent charge means into the inside and the outside of a dust collecting hood, charging the agent from the outside at the beginning, and changing over the charge to the inside when the circulation in a trough becomes obstructed. CONSTITUTION:In casting bed desiliconization, a treating agent 7 is firstly charged from a charge chute 5'' provided at the outside of a dust collecting hood 4, and an inside chute 5' is closed with a damper 10. Since the treating agent 7 is charged into molten iron 6 at a distance from the leading end 11 of a trough, the treating agent 7 is never sucked into the dust collecting hood 4. When slag 8 begins clogging a trough 1, the treating agent 7 is charged from the inside chute 5' by changing over the damper 10. Accordingly, since the treating agent 7 is charged at the leading end 11 of the trough, a hood 12 at the leading end is provided in the hood 4 to prevent the loss of the treating agent 7 due to suction into the hood 4. When the circulation in the trough 1 returns to normal, the agent is again charged from the outside chute 5''.

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