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1. 发明专利

JPH01172529A PRODUCTION OF SINTERED ORE 失效
公开(公告)号：JPH01172529A
公开(公告)日：1989-07-07
申请号：JP32953787
申请日：1987-12-28
申请人： KAWASAKI STEEL CO
发明人： FUJII NORIBUMI
IPC分类号： C22B1/16
摘要： PURPOSE:To produce sintered ore having god reducing ratio and reduced powdering by separating sintering raw material with Al2O3 content, beforehand mixing and pelletizing the low Al2O3 raw material, successively mixing together with the sintering raw material containing high Al2O3 raw material and sintering. CONSTITUTION:The sintering raw material is separated with the Al2O3 content and the low Al2XO3 raw material having 1.8% Al2O3 and supplied to the sintering operation. The low Al2O3 raw mate rial, which becomes large diameter size by pre-pelletizing, is charged into lower layer on pallet by grain segregation and reduced powdering is improved. On the other hand, the high Al2O2 raw material is charged on upper layer, and as the cooling speed is quickened, the reducing ratio and the reduced powdering are not deteriorated. By this method, the high Al2O3 raw material is used and the reduced powdering can be improved without deteriorating the reduction ratio.

2. 发明专利

JPS6326316A PELLETIZING METHOD FOR FINE ORE FOR SINTERING 失效
公开(公告)号：JPS6326316A
公开(公告)日：1988-02-03
申请号：JP16968386
申请日：1986-07-21
申请人： KAWASAKI STEEL CO
发明人： FUJII NORIBUMI , SUEMORI AKIRA
IPC分类号： C22B1/16
摘要： PURPOSE:To form artificial particles having high strength only from the fine powder ore with a small amt. of binder by humidifying and pelletizing the fine powder ore charged into a disk pelletizer to form mini-pellets and spraying the binder to the mini-pellets just prior to discharge. CONSTITUTION:The fine powder ore is charged into the position 1a of the disk pelletizer 4 by a raw material charger 1. The charged raw materials move according to the rotation of the disk and water is sprayed to the materials in the position 2a by a water sprayer 2, by which the materials are humidified to have the moisture necessary for pelletization. The raw materials stick to each other to form the artificial particles. The artificial particles grow by sticking the other fine powder raw materials while rotating in the pelletizer 4. The particles growing to the prescribed grain size overflow from the position 6 of the pelletizer 4 and are discharged in the form of the mini-pellets. The binder is added to the raw materials from the position 6 to the position 3a where the particles roll and grow.

3. 发明专利

JPH06212292A PRODUCTION OF PARTICLE FOR SINTERING 失效
公开(公告)号：JPH06212292A
公开(公告)日：1994-08-02
申请号：JP536993
申请日：1993-01-14
申请人： KAWASAKI STEEL CO , TAIHO IND CO
发明人： FUJII NORIBUMI , NISHIMURA SHIGERU , OKURA HIROSUKE
IPC分类号： C22B1/16
摘要： PURPOSE:To provide the process for production of the particles for sintering having sufficient crushing resistance at the time of sintering. CONSTITUTION:The primary pellets obtd. by plletization of pulverized ore, org. binder and water are heated to >=80 deg.C. As a result, the particles for sintering having >=1.00g crushing strength are produced by, for example, several minutes of drying by heating.

4. 发明专利

JPH0673463A METHOD FOR CRUSHING SINTERED CAKE AND DEVICE THEREFOR 失效
公开(公告)号：JPH0673463A
公开(公告)日：1994-03-15
申请号：JP22840392
申请日：1992-08-27
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , FUJITA MASAO , FUJII NORIBUMI , IYAMA SHUNJI
IPC分类号： B02C18/02 , B02C23/00 , C22B1/16 , C22B1/20 , F27B21/12
摘要： PURPOSE:To make a sintered cake small blocks, to prevent over-crushing and to reduce the generating quantity of returning ore by driving plural parting plates in the width direction of a pallet in the sintered layer to make plural notches and sintering. CONSTITUTION:At the outlet side of an ignition furnace 25, at the time of burning up to a depth of 20-100mm from the surface layer after igniting the sintering raw material 22, plural parting plates 10 are driven into the sintering raw material layer by using a vibrating type number 11 arranged in a parting driving machine 9 at 100-1000mm in the width direction of the pallet 3. Immediately, the parting plates 10 are pulled out and the sintering is executed to form plural notches in the sintered cake 2. The sintered cake 2 is made to the blocks at the time of being discharged from the pallet 3 at the ore discharging part. The sintered cake 2 made to the blocks in shifted to a sloping chute 32 and stopped on a receiving tooth 6 at the discharging end. By working a driving cylinder 16, a cutter 33 is descended, and by applying the external force from the upper surface of the sintered ore 2 on the receiving tooth 6, the sintered cake 2 is crushed.

5. 发明专利

JPH02173220A METHOD FOR CONTROLLING PERMEABILITY ON PALLET IN SINTERING MACHINE 失效
公开(公告)号：JPH02173220A
公开(公告)日：1990-07-04
申请号：JP32785588
申请日：1988-12-27
申请人： KAWASAKI STEEL CO
发明人： FUKAGAWA TAKUMI , HOSOMI KAZUO , NITTA SHOJI , IYAMA SHUNJI , FUJII NORIBUMI , KONISHI YUKIO , ISHIKAWA HIROAKI
IPC分类号： C22B1/20
摘要： PURPOSE:To improve the permeability of sintering raw material by granulating kneaded flake having plastic state from a kneading machine with a granular machine and cascade-controlling granule grain size in accordance with the permeability of the sintering raw material on a pallet. CONSTITUTION:Moisture is added to the sintering raw material to charge this into the kneading machine 5. Then, by using compact medium, exciting-compact kneading is executed with exciting force 3-10g (g: acceleration of gravity). The obtd. kneaded flake having plastic state is charged into an exciting cylindrical type granular machine 6. A cylindrical axis in this granular machine is inclined to the gradient in the range of + or -10 deg. angle and the exciting force is adjusted into the range of 3-5g and and the above raw material is rolling-pelletized and granulated while controlling grain size of mini-pellet. This mini-pellet is blended into the ordinary sintering raw material, and after re-granulating with a mixer, this is supplied into a DL-type sintering machine. Then, the permeability of the sintering raw material on the pallet is measured and compared with the preset permeability. Based on this difference, the grain size of the above mini-pellet is cascade-controlled. By this method, the permeability at the time of sintering is improved saving of power cost in a main exhauster can be executed.

6. 发明专利

JPH07109532A OPERATION METHOD OF DRUM MIXER FOR SINTERING 失效
公开(公告)号：JPH07109532A
公开(公告)日：1995-04-25
申请号：JP25408793
申请日：1993-10-12
申请人： KAWASAKI STEEL CO
发明人： FUJII NORIBUMI
IPC分类号： B01J2/12 , C22B1/16
摘要： PURPOSE:To provide a operation method of a drum mixer used for granulation of sintering raw material. CONSTITUTION:At the time of operation of the drum mixer 2 used for mixing and granulation of the raw material for sintering by constant torque control, the thickness of raw material layer in the mixer 2 is measured by using a layer thickness sensor 50. The operation with an optimum occupying volume rate can be kept without affecting the stuck material, etc., by using the obtd. occupying volume rate and correcting the relation between the raw material occupying volume rate and the motor torque.

7. 发明专利

JPH0523566A RAW MATERIAL GRANULATION AND ITS DEVICE 失效
公开(公告)号：JPH0523566A
公开(公告)日：1993-02-02
申请号：JP20728591
申请日：1991-07-25
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , EBATA SADAO , SUEMORI AKIRA , IYAMA SHUNJI , FUJII NORIBUMI , KONISHI YUKIO
IPC分类号： B01J2/14 , B01J2/18
摘要： PURPOSE:To enhance granulation properties and processing capability withoput effecting kneading fo pressure-tight plasticizing for which the durability of a main machine system needs to be securely maintained and remedial measures to deal with the vibration of a bracket is needed to be taken when raw material is granulated. CONSTITUTION:A raw material granulation device is composed of a stirring blender 4 which adds an adequate amount of water for granulating a raw material depending on the type of the raw material and a vibration granulation machine 5 which applies a circular vibration in a direction crossing the proceeding direction of the raw material moistened by stirring and mixing of the stirring blender 4 and rotates/masses the raw material into mini-pellets.

8. 发明专利

JPH03166321A METHOD AND DEVICE FOR PELLETIZING SINTERING RAW MATERIAL 失效
公开(公告)号：JPH03166321A
公开(公告)日：1991-07-18
申请号：JP26635189
申请日：1989-10-16
申请人： KAWASAKI STEEL CO
发明人： FUJII NORIBUMI , IYAMA SHUNJI , NITTA SHOJI , HOSOMI KAZUO , FUKAGAWA TAKUMI , ISHIKAWA HIROAKI , KONISHI YUKIO
IPC分类号： C22B1/16 , C22B1/20
摘要： PURPOSE:To produce minipellets strong as the raw material of sintered ore for blast furnaces at a low cost from fine powder raw materials by charging the fine powder raw materials into a kneading machine having compaction media under addition of water and applying circular oscillations to the raw materials to form the materials into a flaky state, then charging the materials into a pelletizing machine and briquetting the materials under rolling. CONSTITUTION:The powder raw materials 14 formed by compounding limestone, powder coke, quicklime, returns of sintered ore, etc., at prescribed ratios with powder iron ore contg. >=60wt.% fine powder of =3G oscillation acceleration applied thereon by an exciting machine 64 to form the minipellets 68. The minipellets are sieved and >=10mm pellets are used as the raw material for the sintered ore. The pellets sized below 10mm are returned to the kneading machine 50 and are treated again.

9. 发明专利

JPH02221332A METHOD FOR PELLETIZING SINTERED RAW MATERIAL 失效
公开(公告)号：JPH02221332A
公开(公告)日：1990-09-04
申请号：JP3923389
申请日：1989-02-21
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , IYAMA SHUNJI , FUJII NORIBUMI , HOSOMI KAZUO , FUKAGAWA TAKUMI , ISHIKAWA HIROAKI , KONISHI YUKIO
IPC分类号： C22B1/16
摘要： PURPOSE:To produce rigid minipellets having a desired range of grain size by mixing a compaction medium into a sintered raw material, using a cylinder exciter to optimize the gradient and exciting force of the cylinder shaft and adjusting the space factor of the raw material. CONSTITUTION:The compaction medium in a vessel is oscillated and rolled. The sintered material is charged into the space between the mediums, compacted, plasticized and kneaded into dense flakes. The flaked sintered material is charged into the pelletization exciting cylinder. The cylinder shaft is inclined at a gradient of + or -10 deg., the exciting force is adjusted to control the space factor of the material in the cylinder to 8-20%, and the material is oscillated, rolled and briquetted. By this method, rigid minipellets are obtained.

10. 发明专利

JPH02170926A MANUFACTURE OF SINTERED ORE 失效
公开(公告)号：JPH02170926A
公开(公告)日：1990-07-02
申请号：JP32188888
申请日：1988-12-22
申请人： KAWASAKI STEEL CO
发明人： KODAMA TAKUMA , NOZAKI TSUTOMU , FUJII NORIBUMI
IPC分类号： C22B1/16
摘要： PURPOSE:To manufacture a sintered ore for blast furnace excellent in the collapsibility by reduction by charging pelletized matter of a first group of raw materials in which iron-ore fines are mixed with at least one kind among powders, such as light burnt dolomite fines, powdered serpentine, and limestone fines, and substances of a second group of raw materials in which coke fines are further added to the first group of raw materials and these are mixed and wetted and then subjecting the resulting mixture to pelletizing and to sintering. CONSTITUTION:A raw material mixture consisting of at least one kind among light burnt dolomite fines, powdered serpentine, and limestone fines and a part of iron-ore fines is charged into pelletizing equipment 45 consisting of a drum-type vibrating kneader 30b containing round bars 34 of 30-90mm diameter in 25-40% space factor and a pelletizer 40, where the above raw material mixture is subjected, with the addition of water, to crushing, kneading, humidity control, and pelletizing. Further, a raw material 10 composed of a mixture of at least one kind among light burnt dolomite fines, powdered serpentine, and limestone fines, the rest of iron-ore fines, and coke fines is charged into a drum-type vibrating kneader 30a, where the raw material 10 is subjected to humidity control and kneading with the addition of water. The above two kinds of raw materials are mixed in a secondary drum mixer 50 and then sintered by means of a sintering machine 60. By this method, the good-quality sintered ore for blast furnace having lower degradation ratio in collapse by reduction than heretofore can be obtained.

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