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1. 发明专利

JPH09316553A OPERATION OF DL TYPE SINTERING MACHINE 失效
公开(公告)号：JPH09316553A
公开(公告)日：1997-12-09
申请号：JP13200696
申请日：1996-05-27
申请人： KAWASAKI STEEL CO
发明人： NUSHISHIRO KOICHI , KONISHI YUKIO , OYAMA NOBUYUKI , IGAWA KATSUTOSHI
IPC分类号： C22B1/20 , F27B21/10
摘要： PROBLEM TO BE SOLVED: To improve the breathability at the lower layer part of a sintering raw material layer by arranging plural pieces of vertical plates parallel with one another in the width direction of a pallet at a piled raw material sloping surface formed at the time of charging the sintering raw material on the pallet in a sintering machine and forming ventilation grooves with the vertical plates. SOLUTION: The sintering raw material 5 is continuously supplied onto the pallet 4 in a raw material charging part from a sloping chute 3 to form the sintering raw material layer 5. Plural pieces of vertical plates 6 are pushed downward to the piled raw material sloping surface forming the sintering raw material layer 5 to form the comparatively strong ventilation grooves 12. At the same time, the sintering raw material 5 blast flowing on the piled sloping surface is blown with hot blast from a hot blasting hood 9. The hot blast is absorbed into a wind box 11 through the sintering raw material layer 5. Since the breathing resistance on the raw material piled sloping part is reduced with the action of the vertical plates 6, large quantity of the hot blast can be blown and the wide range can be preheated and dried in a short time.

2. 发明专利

JPH08246069A MANUFACTURE OF SINTERED ORE 失效
公开(公告)号：JPH08246069A
公开(公告)日：1996-09-24
申请号：JP5244295
申请日：1995-03-13
申请人： KAWASAKI STEEL CO
发明人： KONISHI YUKIO , OYAMA NOBUYUKI
IPC分类号： C22B1/16
摘要： PURPOSE: To improve permeability and to replace a portion of coke with inexpensive fuel in manufacturing ores to be supplied as iron manufacturing raw materials. CONSTITUTION: Solid fuel pieces 3 formed by solidifying general public garbage in an amount of 10% or smaller when converted into coke are replaced with coke and are mixed into sintered materials. Then, 70% or more of the solid fuel pieces 3 are deposited within layers provided in the lower half part of a sintering bed 8. As a result, sintered ore manufacturing costs are reduced.

3. 发明专利

JPH0711349A METHOD FOR ESTIMATING STRENGTH OF SINTERED ORE FOR BLAST FURNACE AND ITS CONTROL METHOD 失效
公开(公告)号：JPH0711349A
公开(公告)日：1995-01-13
申请号：JP15537093
申请日：1993-06-25
申请人： KAWASAKI STEEL CO
发明人： OYAMA NOBUYUKI , KONISHI YUKIO , IGAWA KATSUTOSHI , TAGUCHI SEIJI
IPC分类号： C22B1/20 , C22B1/16
摘要： PURPOSE:To execute the strength control in a sintered ore by estimating the strength of the sintered ore from the contents and porosities of calcium ferrite and slag in the sintered ore. CONSTITUTION:In order to estimate a shutter strength SI or a product yield YI of the sintered ore, the basic strength sigmab of the sintered ore is obtd. with the equation I from the calcium ferrite content m and slag content Q in the sintered ore constituting material. Successively, a contributing factor (c) of the porosity to the strength is obtd. with the equation II from a pore diameter distribution factor beta. By using the equation III from these values and the porosity P, a tensile strength sigmas of the sintered ore is calculated and further, a shutter strength index SI with the equation IV or a yield factor YI with the equation V is calculated. Therein, the pore diameter distribution factor beta is the gradient of a regression line at the time of logarithmically plotting the pore diameter D obtd. from the sintered ore and frequency ratio R having the poring diameter D or larger and S, T, h1, h2, K, K'' and (n) are the constants. As the estimated value and the actual measured value of the shutter strength index SI show good correspondence, the strength control can be executed from this estimation.

4. 发明专利

JPH0483826A METHOD FOR PRETREATING PULVERIZED SINTERING RAW MATERIAL 失效
公开(公告)号：JPH0483826A
公开(公告)日：1992-03-17
申请号：JP20004290
申请日：1990-07-27
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , IYAMA SHUNJI , FUJII NORIBUMI , KONISHI YUKIO , ISHIKAWA HIROAKI
IPC分类号： C22B1/14 , C22B1/16
摘要： PURPOSE:To improve the kneading performance and kneading treatment capacity of a kneading machine by specifying the ratio of the cylindrical inside diameter of an exciting and kneading machine to the diameter of a compacting medium, the filling rate of the compacting medium and the speed of rotations in an exciting motor. CONSTITUTION:The ratio of the cylindrical inside diameter of an exciting and kneading machine to the diameter of a compacting medium is regulated to >=15, and the filling rate of the compacting medium in the exciting and kneading machining is regulated to 13 to 50%. Then, a pulverized sintering raw material is fed to the above exciting and kneading machine and is kneaded. At this time, for executing the kneading under the operating condition of 3 to 10g vibrating acceleration in the kneading machine, the speed of rotations in an exciting motor of the exciting machine, e.g. in a vibro motor is controlled. At the time of kneading the pulverized sintering raw material under the above-mentioned conditions, the moisture content in the kneaded material is made uniform, and its pelletizing properties in the following pelletizing stage is remarkably improved. Moreover, by the compacting effect, the ball strength of the kneaded material is improved, and furthermore, the effects of accelerating the circulating speed of a rod and the transferring speed of the raw material, improvement in treating capacity or the like can be obtd.

5. 发明专利

JPH03219026A METHOD AND APPARATUS FOR PRE-TREATING SINTERING RAW MATERIAL 失效
公开(公告)号：JPH03219026A
公开(公告)日：1991-09-26
申请号：JP1543090
申请日：1990-01-24
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , IYAMA SHUNJI , FUJII NORIBUMI , KONISHI YUKIO , ISHIKAWA HIROAKI
IPC分类号： C22B1/00 , C22B1/16
摘要： PURPOSE:To improve kneading effect and granulating effect of raw material by spraying mist stream on front surface and rear of powdery mixed raw material flow to add moisture and making it flaky shape with a kneading machine having plural columnar rods at the time of granulating the sintering raw material for blast furnace. CONSTITUTION:At the time of manufacturing the sintered ore as the raw material for blast furnace, the powdery mixed raw material 2 of powdery iron ore, returned ore, lime stone, slag making agent and coke, etc., is conveyed with a conveyor 1 and made to band-state of wide width with the width widening buffer means 4 for the raw material 2 arranged in proximity to an end roller 11 and charged to a kneader 3. In this case, the fine mist streams 8 having 50-200mum diameter with high pressure air by two mist stream blowing devices 5, 5 are blow to the mixed raw material 2 from the front surface and rear of the raw material flow and after adding the moisture, this is made to the flaky shape with the kneader 3 having plural columnar rods 35 and being excited with exciting roller 33. This is charged to a granulating machine to obtain a pellet-like sintering raw material having uniform composition, excellent strength, suitable grain size and excellent sinterability.

6. 发明专利

JPH02225628A PRETREATMENT OF SINTERING RAW MATERIAL 失效
公开(公告)号：JPH02225628A
公开(公告)日：1990-09-07
申请号：JP4515989
申请日：1989-02-28
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 sintered ore having high collapse strength by pelletizing powder raw materials to minipellets by compaction plasticizing and kneading with an excitation kneading machine, then drying and dehydrating the minipellets, further sieving the pellets and supplying the same onto a pallet of a sintering machine at the time of producing the sintered ore for a blast furnace by using fine pulverous iron ore. CONSTITUTION:The powder raw materials contg. the fine pulverous iron ore in which =60% are charged from a raw material tank 1 into the excitation compaction plasticizing and kneading device 30 by a conveyor 3. After the raw materials are compaction-plasticized and kneaded under excitation by the pressurizing and rolling using many compacted media, the raw materials are pelletized to the minipellets by an excitation pelletizing machine 40. The minipellets are imposed on a perforated plate having the many apertures having 2 to 3mm width and 10mm length and are dried to

7. 发明专利

JPS63114914A PRODUCTION OF SI-MN PIG IRON OR SI PIG IRON IN SHAFT FURNACE 失效
公开(公告)号：JPS63114914A
公开(公告)日：1988-05-19
申请号：JP26230886
申请日：1986-11-04
申请人： KAWASAKI STEEL CO
发明人： KONISHI YUKIO , FUKUTAKE TAKESHI
IPC分类号： C21C1/08
摘要： PURPOSE:To easily produce pig iron containing high Si by charging raw material containing SiO2 from a shaft furnace top in the specific range near the furnace inner wall at the time of producing the Si pig iron or Si-Mn pig iron having high Si content in the shaft furnace. CONSTITUTION:In case of producing the high Si pig iron or Si-Mn pig iron containing a several ten % in the shaft furnace, the raw material 11 containing SiO2, such as silica rock, etc., is charged at the position of 1/3 of radius, desirable to 1/4 of radium from the furnace wall together with iron ore layer or mixing raw material of iron ore and manganese or or lump coke layer. The raw material 11 containing SiO2 descends in the furnace in dropping locus 13 and SiO2 is reduced to SiO gas 4 by red heated coke in raceway 5 and further reduced to Si by C in the molten droplet 3 of pig iron having high C content descending in the furnace to contain in the molten iron and so Si pig iron or Si-Mn pig iron having high Si content is produced.

8. 发明专利

JP2997304B2 METHOD FOR GRANULATING SINTERING RAW MATERIAL 失效
公开(公告)号：JP2997304B2
公开(公告)日：2000-01-11
申请号：JP20596991
申请日：1991-08-16
申请人： KAWASAKI STEEL CO
发明人： KONISHI YUKIO , IGAWA KATSUTOSHI , FUJII TETSUYA
IPC分类号： C22B1/24

9. 发明专利

JPH0827525A PRODUCTION OF SINTERED ORE FORMED BY USING ORE OF HIGH CRYSTALLIZATION WATER AS RAW MATERIAL 失效
公开(公告)号：JPH0827525A
公开(公告)日：1996-01-30
申请号：JP16644894
申请日：1994-07-19
申请人： KAWASAKI STEEL CO
发明人： OYAMA NOBUYUKI , KONISHI YUKIO
IPC分类号： C22B1/16
摘要： PURPOSE:To produce a sintered ore having,.high strength at a good yield by using goethite ore contg. a >=3wt.% water of crystallization as a raw material. CONSTITUTION:Limestone 2 is compounded with goethite ore powder 1 at such a ratio at which the weight per cent of Fe2O3/(CaO+Fe2O3) attains

10. 发明专利

JPH07173546A PRODUCTION OF SINTERED ORE 失效
公开(公告)号：JPH07173546A
公开(公告)日：1995-07-11
申请号：JP32240493
申请日：1993-12-21
申请人： KAWASAKI STEEL CO
发明人： KONISHI YUKIO , OYAMA NOBUYUKI
IPC分类号： C22B1/20 , C22B1/16 , F27B21/14
摘要： PURPOSE:To stably maintain the sinterability of the thickness direction of a raw material packed bed and enhance the strength of sintered ore by compounding returns at a specific ratio into the specific depth region from the surface of the packed bed prior to burning and sintering of the packed bed. CONSTITUTION:The compounded raw materials are supplied from an ore feed hopper 2 to a moving type pallet 1 of a Dwight-Lloyd sintering machine to form the raw material packed bed (g). The raw materials fed out of a hopper 3 for increased compounding of returns or mill scale are fed by a belt conveyor 4 to a simple mixer 5. The returns or mill scale is stored in a subhopper 2b. The raw materials from a main hopper 2a and sub-hopper 2b of the supply hopper 1 are supplied onto the pallet 1 with a time lag. As a result, the returns are compounded at a ratio of 25 to 95wt.% into the compounded raw material region of 50 to 150mm from the surface of the packed bed (g). The ratio is specified to 1 to 15% in the case of the mill scale. The sintered ore is produced by burning and sintering the packed bed (g).

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