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1. 发明专利

JP2001335781A APPARATUS FOR TESTING OF COKE 失效
公开(公告)号：JP2001335781A
公开(公告)日：2001-12-04
申请号：JP2000158066
申请日：2000-05-29
申请人： NIPPON KOKAN KK
发明人： SHIMOYAMA IZUMI , ITAGAKI SHOZO , FUKADA KIYOSHI , FUJIMOTO HIDEKAZU , SUMIYA HIDENORI
IPC分类号： G01L1/00 , C10B29/02 , C10B33/10 , C10B41/00 , G01L1/26
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for the testing of coke which apparatus is capable of measuring the load distribution that the coke at high temperatures affects on the furnace walls. SOLUTION: The apparatus for the testing of coke which apparatus feeds coke or coal into a carbonization chamber 1, then compresses or excludes it, thus measures the load affecting on the side wall of the above chamber, is characterized in that it comprises: divided side walls 3b each of which is one of a plurality of divided side walls and is so set up as to be movable to the right angle to the direction of the compression or extrusion; load-transmitting rods 11 each of which is connected to the each of the divided walls 3b and transmits the load affected from each of the divided walls to the position influenced hardly by the heat; and load measuring devices 9 each of which receives the transmitted load from the load-transmitting rod 11 and measures the load.

2. 发明专利

JPH11181438A PRODUCTION OF COKE FOR METALLURGY 失效
公开(公告)号：JPH11181438A
公开(公告)日：1999-07-06
申请号：JP34957497
申请日：1997-12-18
申请人： NIPPON KOKAN KK
发明人： SUMIYA HIDENORI , ITAGAKI SHOZO , SHIMOYAMA IZUMI , FUKADA KIYOSHI , FUKUSHIMA YASUHIRO
IPC分类号： C10B57/04 , C10B57/12
摘要： PROBLEM TO BE SOLVED: To produce low bulk density coke suitable for the highly fine particle coal blow-off operations of blast furnaces and having a high porosity and a strength of a constant level or larger. SOLUTION: This method for producing coke for metallurgy in a coke oven comprises charging a coal blend containing a pore-producing agent into a carbonization chamber, carbonizing the charged coal blend, and adding a hydrocarbon compound into the carbonization chamber in the middle or final period of the carbonization operation to adhere the pyrolyzed carbon to the fine cracks and pore walls of the coke mass. Thereby, the low bulk density coke having a high porosity and a strength of a constant level or larger is produced.

3. 发明专利

JPH11181437A PRODUCTION OF COKE FOR METALLURGY 失效
公开(公告)号：JPH11181437A
公开(公告)日：1999-07-06
申请号：JP36385597
申请日：1997-12-18
申请人： NIPPON KOKAN KK
发明人： FUKADA KIYOSHI , ITAGAKI SHOZO , SHIMOYAMA IZUMI , SUMIYA HIDENORI , TANI YOSHIO
IPC分类号： C10B57/04
摘要： PROBLEM TO BE SOLVED: To produce coke having large granule diameters, a low bulk density and a large total pore volume from a conventional coal blend by blending plural kinds of coals so that the viscosity of the softened or melted coal in the front half portion of a softening or melting temperature region in a carbonization oven is different from that of the rear half portion. SOLUTION: This method for producing coke for metallurgy comprises carbonizing coal. Therein, two or more kinds of coals are blended so that the viscosities of the front and rear half portions of the coal on a low temperature side in a softening or melting temperature region is small and large, respectively. Namely, the front half portion of the softening or melting temperature region has a small viscosity so that the insufficiency of the fusion is eliminated, and the rear half portion has a large viscosity so that the fusion is not accelerated to reduce porosity. Thus, the retention time of the gas is increased, and a total pore volume can be enlarged within a range not deteriorating the strength of the coke.

4. 发明专利

JPH11131075A PRODUCTION OF COKE FOR METALLURGY 失效
公开(公告)号：JPH11131075A
公开(公告)日：1999-05-18
申请号：JP30070597
申请日：1997-10-31
申请人： NIPPON KOKAN KK
发明人： ITAGAKI SHOZO , SHIMOYAMA IZUMI , FUKADA KIYOSHI , SUMIYA HIDENORI
IPC分类号： C10B57/00 , C10B57/04
摘要： PROBLEM TO BE SOLVED: To provide a method for enlarging a granular size of coke while maintaining coke strength. SOLUTION: This production method of coke for metallurgy comprises arranging a raw material coal having a large primary peak in a degree of linear shrinkage appeared after solidification during dry distillation in a oven wall side in the width direction of the oven and a raw material coal having a small primary peak in inside of the oven.

5. 发明专利

JPH1121561A PRODUCTION OF COKE FOR BLAST FURNACE 失效
公开(公告)号：JPH1121561A
公开(公告)日：1999-01-26
申请号：JP17698697
申请日：1997-07-02
申请人： NIPPON KOKAN KK
发明人： FUKADA KIYOSHI , ITAGAKI SHOZO , SHIMOYAMA IZUMI , SUMIYA HIDENORI
IPC分类号： C10B57/04 , C10B57/06
摘要： PROBLEM TO BE SOLVED: To obtain a coal blend which can give coke reduced in a bulk density without lowering strength by blending caking coal with noncaking or low-caking coal having a specified grain size. SOLUTION: The grain size of the noncaking or low-caking coal should be 3 mm or smaller (100%). It is desirable that a carbon powder having a softening or melting temperature higher than the coking temperature be added to a coal blend comprising caking coal and noncaking or low-caking coal. It is exemplified by a high-softening or melting-temperature carbon powder such as oil coke, powdery coke or anthracite. The pores of coke are formed in such a way that the gas produced from coal when it is in a softened or molten state at about 380 deg.C is entrapped in it when the melt is solidified. As the viscosity of the soften or molten layer is increasing, the rate of discharge of the produced gas is retarded, the volume of entrapped gas increases, and the porosity increases. Because the excessively large pore diameter causes a lowered coke strength, it is desirable that the pore size is 10-100 μm. By making the particles of the inert component as a solid layer finer, the viscosity of the softened or molten layer of coal can be increased.

6. 发明专利

JPH1112575A PRODUCTION OF COKE FOR BLAST FURNACE 失效
公开(公告)号：JPH1112575A
公开(公告)日：1999-01-19
申请号：JP17131297
申请日：1997-06-27
申请人： NIPPON KOKAN KK
发明人： FUKADA KIYOSHI , ITAGAKI SHOZO , SHIMOYAMA IZUMI , SUMIYA HIDENORI
IPC分类号： C10B57/06
摘要： PROBLEM TO BE SOLVED: To solve the trouble that the production of coke with high strength lowers its bulk density and, when this coke is charged in the blast furnace, the residence time is prolonged to proceed pulverization whereby the air permeability is inhibited. SOLUTION: Coal blend is mixed with an organic substance that gasifies at 380-550 deg.C and they are dry-distilled. The organic substance to be added is preferably a thermoplastic resin. When a thermoplastic resin is added, the amount to be added is set lower than 5% based on the charged coal. The thermoplastic resin is crushed into particles of less than 3 mm size and admixed to the coal.

7. 发明专利

JPH10148632A METHOD AND DEVICE FOR EVALUATING SOFTENING AND MELTING CHARACTERISTICS OF COAL 失效
公开(公告)号：JPH10148632A
公开(公告)日：1998-06-02
申请号：JP32097896
申请日：1996-11-15
申请人： NIPPON KOKAN KK
发明人： SHIMOYAMA IZUMI , ITAGAKI SHOZO , FUKADA KIYOSHI , SUMIYA HIDENORI
IPC分类号： G01N25/04 , G01N11/14 , G01N33/22
摘要： PROBLEM TO BE SOLVED: To measure softening and melting characteristics of coal by increasing the temperature of a sufficient amount of coal sample at a temperature increase speed of e.g. 50 deg.C/min. deg.C or higher. SOLUTION: A specific amount or more of coal sample is sampled in a measurement cell 1, dipped in a metal bath 4, and the temperature is raised, the metal bath 4 is replaced by higher temperature metal bath 5 when a specific temperature has been reached, the rotation of an agitation rod is controlled by a rotation controller 2 while raising the temperature at a temperature raising speed of 50 deg.C/min or higher, and the rotational speed or the torque of the agitation rod is detected by a detector 3 to measure the degree of flow. In this manner, even coal that indicates inferior characteristics at a low temperature raising speed indicates superior characteristics at a high temperature raising speed, thus measurement of the property of coal that could not be measured by a conventional measurement is made possible.

8. 发明专利

JPH0967579A METHOD FOR ESTIMATING PARTICLE DIAMETER OF COKE IN CHAMBER OVEN 失效
公开(公告)号：JPH0967579A
公开(公告)日：1997-03-11
申请号：JP24526195
申请日：1995-08-31
申请人： NIPPON KOKAN KK
发明人： FUKADA KIYOSHI , ITAGAKI SHOZO , SHIMOYAMA IZUMI
IPC分类号： C10B45/00 , C10B47/10 , C10B57/00
摘要： PROBLEM TO BE SOLVED: To provide a method for estimating the particle diameter of cake in a chamber oven which can estimate the particle diameter of coke and makes coke having a large particle diameter capable of being produced by estimating the particle diameter of coke based on the minimum value of the ratio of the tensile strength to the applied tensile stress, in coked coal blend, determined with respect to a predetermined positional range and a predetermined temp. range. SOLUTION: The section in the widthwise direction of a coke oven chamber in a chamber oven is divided into a plurality of elements having a predetermined size. For each element, the ratio of the tensile strength S of the coked coal blend for coke making in the element to the tensile stress F applied to the coked coal blend for coke making in the element is determined with respect to the position of the section in the widthwise direction of the oven and a predetermined temp. range involved in the temp. rise in the coke oven chamber. Based on the minimum value (S/F) min of the above ratio determined with respect to the predetermined positional range in the section in the widthwise direction of the oven and the predetermined temp. range, the particle diameter D of coke is estimated by the following equation (wherein D represents the tensile strength of the coked coal blend; F represents the tensile stress applied to the coked coal blend; and α and β are each a constant).

9. 发明专利

JPH07300589A CONTINUOUS VERTICAL COKE OVEN AND PRODUCTION OF COKE 失效
公开(公告)号：JPH07300589A
公开(公告)日：1995-11-14
申请号：JP32590994
申请日：1994-12-27
申请人： NIPPON KOKAN KK
发明人： ITAGAKI SHOZO , SUZUKI YOSHIO , SHIMOYAMA IZUMI , FUKADA KIYOSHI , UEDA TAKASHI
IPC分类号： C10B3/00 , C10B47/12
摘要： PURPOSE:To produce good-quality coke at high efficiency with a continuous vertical coke oven. CONSTITUTION:This production process is one for producing coke by using a continuous vertical coke production equipment composed of a continuous vertical coke oven 1, a drier/preheater 2 for drying and preheating coal 11 to be fed into the coke oven 1 and a hot former 5 for forming the dried and preheated coal into blocks, wherein the production is performed in such operating conditions that the drying and preheating temperature of coal 11 is 200-300 deg.C, the bulk density of the formed coal is 0.9-1.1t/m , the temperature at the center of the coking chamber in the coking zone is 750-900 deg.C, the pressure applied to the side of the coal 11 is 1-2kgf/cm , and the velocity at which the coal 11 falls within the coke oven is 0.5-1.5m/h.

10. 发明专利

JPH07268337A TRANSPORTATION OF RED-HOT COKE 失效
公开(公告)号：JPH07268337A
公开(公告)日：1995-10-17
申请号：JP5940894
申请日：1994-03-29
申请人： NIPPON KOKAN KK
发明人： ITAGAKI SHOZO , SUZUKI YOSHIO , SHIMOYAMA IZUMI , FUKADA KIYOSHI , UEDA TAKASHI
IPC分类号： C10B39/02 , C10B39/12
摘要： PURPOSE:To prevent the generation of dust and smoke in the transportation of red-hot coke. CONSTITUTION:A hood 2 of a guide vehicle 1 is closely connected to the opening of a carbonization chamber 3, an oven door 4 is removed, red-hot coke is charged into the hood 2 and transferred through a red-hot coke discharging port 2b to a coke bucket 7 and the dust generated in the hood 2 during the charging of the red-hot coke is sent to a dust collector through a dust discharging port 2c of the hood 2. After completing the transfer of the red-hot coke into the coke bucket 7, a slide gate 8 is closed to prevent the escape of powdery dust from the coke bucket 7 to the open air and the coke bucket 7 is transferred to a coke dry-quenching facility. The red-hot coke receiving port of the coke dry-quenching facility is closely connected to the red-hot coke receiving port 7a of the coke bucket 7 and the slide gate 8 of the coke bucket 7 is opened to charge the red-hot coke into the coke dry-quenching facility.

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