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1. 发明专利

JPH11152508A OPERATION OF INJECTING PULVERIZED FINE COAL IN BLAST FURNACE 失效
公开(公告)号：JPH11152508A
公开(公告)日：1999-06-08
申请号：JP31855097
申请日：1997-11-19
申请人： KOBE STEEL LTD
发明人： MATSUI YOSHIYUKI , IWAKIRI HARUHISA , MIYAGAWA KAZUYA , KASAI AKITO
IPC分类号： C21B5/00
摘要： PROBLEM TO BE SOLVED: To provide a blast furnace operating method which can improve the ventilation even in the case of operating extremely large quantity of injected pulverized fine coal, in the blast furnace operating method for injecting the pulverized fine coal. SOLUTION: At the time of injecting the pulverized fine coal together with blasting gas from a tuyere part of the blast furnace, a reached highest temp. Tmax is controlled while containing the control of gas temp. distribution in a raceway from the tuyere of the blast furnace to the deep position of the raceway so that a ratio Tmax /THT of the reached max. temp. Tmax ( deg.C) of the gas in the raceway and the m.p. THT ( deg.C) of ash of the pulverized fine coal becomes in the range of 1.0-1.5.

2. 发明专利

JPH03290492A INTERMEDIATE TEMPERATURE DRY DISTILLATION OVEN AND METHOD FOR PREPARING INTERMEDIATE TEMPERATURE DRY DISTILLED COKE 失效
公开(公告)号：JPH03290492A
公开(公告)日：1991-12-20
申请号：JP9290890
申请日：1990-04-06
申请人： KOBE STEEL LTD
发明人： IWAKIRI HARUHISA
IPC分类号： C10B3/00 , C10B21/10 , C10B47/04
摘要： PURPOSE:To provide an intermediate temperature dry distillation oven suitable for the preparation of coke for metallurgy, especially furnace, by specifying the thermal conductivity, etc., of a bulkhead between the carbonization and combustion chambers of the dry distillation oven. CONSTITUTION:In a dry distillation oven in which powdery coal is dry-distilled in an air-free state with the heat of a combustion chamber in a carbonization chamber to prepare coke, the thermal conductivity of a bulkhead between the carbonization chamber and the combustion chamber is >=10kg/m.h. deg.C. When the thermal conductivity is =1.2 deg.C/min and to a temperature range of 750-950 deg.C, respectively.

3. 发明专利

JPS60245692A PRODUCTION OF COKE FOR BLAST FURNACE 失效
公开(公告)号：JPS60245692A
公开(公告)日：1985-12-05
申请号：JP10241984
申请日：1984-05-21
申请人： KOBE STEEL LTD
发明人： NAKAMURA TSUTOMU , IWAKIRI HARUHISA , KITAMURA MASASHI
IPC分类号： C10B57/04
摘要： PURPOSE:To obtain coke for blast furnace, which has a high strength and a good quality, by mixing a given quantity of pulverized breeze with part of crushed coal blend, granulating the mixture, mixing the resulting coal having a specified particle size with the coal blend and dry-distilling the mixture. CONSTITUTION:5-10% pulverized breeze is mixed with part of a coal blend which has been crushed into a powder having a particle size of 0.3mm.. The mixture is granulated in the presence of a water-soluble binder into a granule having a particle size of 5-10mm.. The granulated coal is mixed with the coal blend, and the mixture is dry-distilled to obtain the desired coke for blast furnace. Since the breeze and coal are pulverized and granulated, the distance between the breeze particle and the coal particle is shortened so that adhesion therebetween is improved and cracking around the breeze particle can be reduced. Accordingly, the quality of coke can be improved by blending said granulated coal.

4. 发明专利

JPS6040192A PRODUCTION OF METALLURGICAL COKE 失效
公开(公告)号：JPS6040192A
公开(公告)日：1985-03-02
申请号：JP14825783
申请日：1983-08-12
申请人： KANSAI COKE & CHEMICALS , KOBE STEEL LTD
发明人： KAMIMURA NOBUO , ABE TOSHIO , TSUJI TOSHIAKI , IWAKIRI HARUHISA , NAKAMURA TSUTOMU , KITAMURA MASASHI
IPC分类号： C10B57/04
摘要： PURPOSE:To produce metallurgical coke giving high strength after the thermal reaction as well as high cold strength, by adding a specific amount of powdery coke having a specific particle size to charging coal in a concentrated compounding method. CONSTITUTION:(A) Fine coke powder having a target particle size of 60-150 mesh and obtained by crushing with a mill such as roll mill, ball mill, etc. is added to both (B) compounded powdery coal and (C) stock coal (coal briquette) containing large amount of low-quality coal. The amounts of the coke powder A to be added to the components A and B are 1-5wt% and 1-10wt%, respectively. EFFECT:Low-quality coal available abundantly at a low cost can be used. Powdery coke which is useless except in iron works can be utilized effectively.

5. 发明专利

JPS56103279A PRODUCTION OF REFORMED COAL 失效
公开(公告)号：JPS56103279A
公开(公告)日：1981-08-18
申请号：JP709080
申请日：1980-01-23
申请人： KOBE STEEL LTD
发明人： NARITA KIICHI , KITAMURA MASASHI , YONEDA TOKUZOU , IWAKIRI HARUHISA , NAKAMURA TSUTOMU
IPC分类号： C10B57/06
摘要： PURPOSE:A reformed coal resulting from addition of a binder to a low-grade coal and heat treatment thereof is additionally combined with specific amounts of water and a fine coal powder and they are kneaded at a specific temperature to prevent the particles from caking again. CONSTITUTION:A binder such as pitch is added to a crushed low-grade coal such as low-caking coal and they are kneaded under heating to a reformed coal. Additionally, the resultant reformed coal is combined with 6-10wt% of water and 6- 10wt% of a finely powdered coal with particles sizes of less than 0.3mm. and they are kneaded in the temperature range from 20 deg.C lower than the softening point of the binder to the softening point to produce the objective reformed coal. EFFECT:The product is used as a starting material for coke. For example, a coal mix, the raw material, is combined with 20-50% of the product and they are made into coke with high strength enough to be used as a blast furnace coke without using a high-grade coal such as a high-caking coal produced in the United States.

6. 发明专利

JPH07113094A COKE 失效
公开(公告)号：JPH07113094A
公开(公告)日：1995-05-02
申请号：JP26009993
申请日：1993-10-18
申请人： KOBE STEEL LTD
发明人： IWAKIRI HARUHISA , KAMIJO TSUNAO , KASAI AKITO
IPC分类号： C10L5/00
摘要： PURPOSE:To obtain coke hard to develop coke powdering in a blast furnace, with its density, properties (angle of repose) and particle size comparable to or better than those of conventional chamber oven-type coke, by specifying the reactivity of coke with CO2 and in-blast furnace powdering resistance index. CONSTITUTION:The reactivity of coke (coke conversion rate) when reacted with CO2 at 1100 deg.C for 2hr is set at >=32%, and the cake's in-blast furnace powdering resistance index at >=79. It is preferable that the final caking temperature be set at 750-950 deg.C and the rate of temperature rise for the coal layer in a carbonizing chamber at >=1.2 deg.C/min. The objective coke can be obtained by the method described in the official gazette of Japanese Provisional Patent No. 1220/1991.

7. 发明专利

JPH07113076A MEDIUM-TEMPERATURE CARBONIZATION COKE OVEN 失效
公开(公告)号：JPH07113076A
公开(公告)日：1995-05-02
申请号：JP26010093
申请日：1993-10-18
申请人： KOBE STEEL LTD
发明人： IWAKIRI HARUHISA , KAMIJO TSUNAO , KASAI AKITO
IPC分类号： C10B5/00 , C10B57/14
摘要： PURPOSE:To obtain a medium-temperature combustion coke oven installable at a low facility cost and capable of producing a high-strength coke in high efficiency by specifying the ratio of the thermal conductivity of a partition wall between a carbonization chamber and a combustion chamber to the thickness of the partition wall. CONSTITUTION:This medium-temperature combustion coke oven satisfies the formula I and preferably the formula II wherein lambda is thermal conductivity of the partition wall between a carbonization chamber and a combustion chamber, DW is thickness of the partition wall and DC is half width of the carbonization chamber.

8. 发明专利

JPS62192486A PRODUCTION OF DRIED AND PREHEATED COAL 失效
公开(公告)号：JPS62192486A
公开(公告)日：1987-08-24
申请号：JP3474186
申请日：1986-02-18
申请人： KOBE STEEL LTD
发明人： NAKAMURA TSUTOMU , KAMIJO TSUNAO , IWAKIRI HARUHISA , KITAMURA MASASHI
IPC分类号： C10L5/24 , C10B57/10 , C10L9/08
摘要： PURPOSE:To produce dried and preheated coal free from occurrence of dust, by drying and preheating pseudo particles in the fine particle portion of coal to completely break them and completely separate the fine particles from the portion of particles having such a size as will cause occurrence of dust. CONSTITUTION:Wet coal 6 is fed into a drying zone 7a of a fluidized bed drier 7 equipped with an agitator 8 to dry and preheat the wet coal, followed by complete separation of the coal into fine particles 2a isolated by breaking of a part of pseudo particles 3 of coal having such a size as will cause occurrence of dust, pseudo particles 3a and coal particles 1b having such a large size as will not cause occurrence of dust. The fine particles 2a and the pseudo particles 3, 3a are introduced into a breaking-classification zone 7b to completely break them. The completely broken fine particles 2b thus obtd. having a particle diameter of 100mum are fed into a kneader 10, followed by addition of a binder 4. The fine particles are reagglomerated to form pseudo particles 3b having a diameter of 100mum or more. The pseudo particles 3b and coal particles 1b are mixed with each other. A coke oven 11 is charged with the mixture.

9. 发明专利

JPS6291587A PRODUCING BLAST FURNACE COKE 失效
公开(公告)号：JPS6291587A
公开(公告)日：1987-04-27
申请号：JP23263885
申请日：1985-10-18
申请人： KOBE STEEL LTD
发明人： NAKAMURA TSUTOMU , KAMIJO TSUNAO , IWAKIRI HARUHISA , KITAMURA MASASHI
IPC分类号： C10B53/08
摘要： PURPOSE:To obtain a blast furnace coke having excellent strength and quality, by mixing a lumped blend comprised of pulverized coal having a particular size and pulverized breeze with a compounded coal, followed by calcination. CONSTITUTION:A mixture comprised of pulversized coal (a) having a size of 0.5mm of less and 1-10wt% pulverized breeze (b) having a size of 60-150 mesh and, if necessary, a binder (c) is lumped to have a high density, thereby obtaining lumped coal (A) having an apparent density of 1.0-1.2g/cc. The component A is mixed in an amt. of 10-40wt% based on the coke to be obtd. with a compounded coal (B). The mixture is calcined to obtain blast furnace coke.

10. 发明专利

JPS5650990A PRODUCTION OF REFORMED COAL 失效
公开(公告)号：JPS5650990A
公开(公告)日：1981-05-08
申请号：JP12855979
申请日：1979-10-04
申请人： KOBE STEEL LTD
发明人： NARITA KIICHI , KITAMURA MASASHI , IWAKIRI HARUHISA , YONEDA TOKUZOU , NAKAMURA TSUTOMU
IPC分类号： C10B57/08 , C10B53/08
摘要： PURPOSE:To obtain reformed coal suitable for use as the raw material for the production of coke for blast furnaces, by a method wherein the ground product of low-grade coal is divided into a coarse-ground coal part and a fine-ground coal part, a binder is added to the coarse-ground coal part, the mixt. is kneaded with heating, the fine-ground coal part is added to the resulting kneaded mixt., and the resulting mixt. is kneaded. CONSTITUTION:When a binder is added to the ground product of low-grade coal and the mixt. is kneaded with heating to produce reformed coal, the ground product of the coal is divided into a coarse-ground coal part and a fine-ground coal part. A binder is added to the coarse-ground coal part. The mixt. is kneaded with heating at a temp. of 100-150 deg.C for 5-15min to deposit the binder uniformly on the surface of the coarse-ground coal particle. The fine-ground coal part is added to the kneaded mixt. The resulting mixt. is kneaded under heating at a temp. of 100- 150 deg.C for 5-30min to deposit the fine-ground coal particle on the surface of the coarse-ground coal particle covered with the binder. The binder is uniformly dispersed in the ground product throughout, e.g. by local agglomeration of the binder, and thus reformed coal of excellent quality can be obtd.

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