WO2014045946A1 - 微粉炭吹き込み装置、これを備えた高炉設備、および微粉炭供給方法 - Google Patents

微粉炭吹き込み装置、これを備えた高炉設備、および微粉炭供給方法 Download PDF

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Publication number
WO2014045946A1
WO2014045946A1 PCT/JP2013/074404 JP2013074404W WO2014045946A1 WO 2014045946 A1 WO2014045946 A1 WO 2014045946A1 JP 2013074404 W JP2013074404 W JP 2013074404W WO 2014045946 A1 WO2014045946 A1 WO 2014045946A1
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Prior art keywords
coal
pulverized coal
blast furnace
modified
heat
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PCT/JP2013/074404
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English (en)
French (fr)
Japanese (ja)
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WO2014045946A8 (ja
Inventor
雅一 坂口
務 濱田
剛嗣 岡田
大本　節男
慶一 中川
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三菱重工業株式会社
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Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to IN1917DEN2015 priority Critical patent/IN2015DN01917A/en
Priority to DE112013004589.3T priority patent/DE112013004589T5/de
Priority to CN201380048340.5A priority patent/CN104641002A/zh
Priority to KR1020157006470A priority patent/KR101648686B1/ko
Priority to US14/428,558 priority patent/US20150225804A1/en
Publication of WO2014045946A1 publication Critical patent/WO2014045946A1/ja
Publication of WO2014045946A8 publication Critical patent/WO2014045946A8/ja

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange

Definitions

  • the present invention relates to a pulverized coal blowing device, a blast furnace facility equipped with the same, and a pulverized coal supply method.
  • Pulverized coal injection as auxiliary fuel in blast furnace equipment is a low-cost auxiliary fuel supply method that replaces heavy oil injection performed until the 1970s.
  • Important conditions for pulverized coal (PCI charcoal) for blast furnace injection include low moisture, low volatile content, excellent combustibility, high combustion speed similar to heavy oil, and low unburned carbon and ash content. It has a calorific value of 6500 kcal / kg or more, a low content of sulfur and phosphorus, and the like.
  • the pulverized coal is blown into the blast furnace together with the compressed air, but the compressed air must be heated to around 1200 ° C. with a burner or the like in advance so that the inside of the furnace is not cooled by the compressed air at the time of blowing. .
  • a large amount of fuel such as heavy oil is necessary, and this point also increases the operating cost of the blast furnace equipment.
  • the present invention has been made in view of the above circumstances, and a pulverized coal blowing apparatus capable of reducing the operating cost of blast furnace equipment and reducing the manufacturing cost of pig iron, blast furnace equipment equipped with the same, and pulverized coal supply It aims to provide a method.
  • the present invention employs the following means. That is, the pulverized coal blowing device according to the first aspect of the present invention is a pulverized coal blowing device configured to blow pulverized coal together with heated and compressed blowing air from the tuyere of the blast furnace body, As a raw material for pulverized coal, modified coal that is modified from low-grade coal and has self-heating properties is used.
  • reformed coal that is much less expensive than raw coal such as bituminous coal, which is generally used, is used as a raw material for pulverized coal that is blown into the blast furnace body as auxiliary fuel. Can reduce the operating cost of the blast furnace equipment and reduce the manufacturing cost of pig iron. Further, the heat of the reformed coal can be effectively used for other parts that require heat, thereby contributing to energy saving.
  • the pulverized coal blowing device is preferably provided with a heat transfer means for transferring heat due to the self-heating action of the reformed coal to a site requiring heat.
  • the heat generated by the self-heating effect of the reformed coal is transferred to the site that requires heat by the heat transfer means, so that the fuel consumed to generate heat at the site or Electric power and the like can be reduced, thereby reducing the operating cost of the blast furnace equipment and thus reducing the manufacturing cost of pig iron.
  • the reformed coal is cooled by the heat of the reformed coal being transferred by the heat transfer means, spontaneous combustion of the reformed coal can be prevented.
  • the pulverized coal blowing device in the above configuration, is configured such that the heat transfer means exchanges heat with the reformed coal before the compressed air before being compressed. preferable.
  • the blown air is appropriately heated by heat exchange with the reformed coal before being heated by the dedicated heating means. For this reason, energy for further heating the blowing air can be saved.
  • the cooling effect of the reformed coal is enhanced, and the generation rate of the compression heat of the blown air is increased, thereby requiring heating of the blown air. Energy can be further reduced.
  • the pulverized coal blowing device is configured in such a manner that the heat transfer means transfers heat of the reformed coal to a reformer for reforming the low-grade coal. It is preferable that
  • the pulverized coal blowing device preferably includes an inactivating means for inactivating the modified coal so that a predetermined amount of the self-heating effect remains.
  • the self-heating effect of the reformed coal is weakened, it is less necessary to transport the reformed coal in a nitrogen atmosphere so that the reformed coal does not ignite spontaneously, and the usage rate of the nitrogen supply device can be reduced. it can. For this reason, the operating cost of blast furnace equipment can be reduced, and the manufacturing cost of pig iron can be reduced.
  • a pulverized coal blowing device includes a mixing unit that mixes the pulverized coal made of the modified coal and the pulverized coal made of raw coal that is generally used in the above-described configuration, It is preferable to dry the pulverized coal made of the raw coal by the self-heating action of the modified coal at the mixing portion and the downstream side thereof.
  • the pulverized coal made of raw coal having a higher moisture content than the modified coal is mixed with the pulverized coal made of modified coal, so that the raw coal is heated by the heat of the modified coal having self-heating properties.
  • the pulverized coal made of charcoal is dried. For this reason, a part of drying process of raw coal can be omitted or simplified. As a result, the equipment, energy, personnel, etc. involved in the drying process can be reduced, the operating cost of the blast furnace equipment can be reduced, and the manufacturing cost of pig iron can be reduced.
  • the blast furnace equipment according to the second aspect of the present invention includes the pulverized coal blowing device having any one of the above-described configurations.
  • reformed coal is used as pulverized coal that is blown into the blast furnace body as auxiliary fuel. Therefore, the cost of auxiliary fuel is reduced, the operating cost of the blast furnace facility is reduced, and pig iron is manufactured. The cost can be reduced and the heat generated when the reformed coal self-heats can be used effectively.
  • the pulverized coal supply method according to the third aspect of the present invention is a pulverized coal supply method when blowing pulverized coal together with heated and compressed blowing air from the tuyere of the blast furnace body, A reformed coal obtained by modifying low-grade coal is used as a raw material, and heat generated by the self-heating action of the reformed coal is transferred to a site that requires heat for use.
  • this pulverized coal supply method since the pulverized coal that is blown into the blast furnace body as auxiliary fuel becomes an inexpensive reformed coal, it is possible to reduce the cost of the auxiliary fuel and reduce the manufacturing cost of pig iron. Moreover, the heat generated by the reformed coal's self-heating action is transferred to a part that requires heat for effective use, and the fuel and electric power consumed to generate the heat at the part are reduced to a blast furnace. The operating cost of the equipment can be reduced, and consequently the manufacturing cost of pig iron can be reduced.
  • the modified coal is preferably inactivated so that a predetermined amount of the self-heating effect remains.
  • the self-heating effect of the reformed coal is weakened, it is less necessary to transport the reformed coal in a nitrogen atmosphere so that the reformed coal does not spontaneously ignite, and the usage rate of the nitrogen supply device is reduced. Can do. For this reason, the operating cost of blast furnace equipment can be reduced, and the manufacturing cost of pig iron can be reduced.
  • the pulverized coal supply method is a pulverized coal supply method when blowing pulverized coal together with heated and compressed blowing air from the tuyere of the blast furnace body, and reforms low-grade coal
  • the pulverized coal made of the modified coal and the pulverized coal made of generally used raw coal are mixed, and the pulverized coal made of the raw coal is dried by the self-heating action of the modified coal.
  • the pulverized coal composed of raw coal having a higher moisture content than the modified coal is mixed with the pulverized coal composed of the modified coal, so that Since the pulverized coal made of raw coal is dried by heat, the drying step of the raw coal can be partially omitted or simplified. As a result, the equipment, energy, personnel, etc. involved in the drying process can be reduced, the operating cost of the blast furnace equipment can be reduced, and the manufacturing cost of pig iron can be reduced.
  • the blast furnace equipment provided with the pulverized coal injection method, and the pulverized coal supply method according to the present invention it is possible to reduce the operating cost of the blast furnace equipment and reduce the manufacturing cost of pig iron.
  • FIG. 1 is a schematic configuration diagram of a blast furnace facility 1A including a pulverized coal blowing device 5A according to a first embodiment of the present invention.
  • This blast furnace equipment 1A includes a blast furnace main body 2, a raw material quantitative supply device 3, a charging conveyor 4, and a pulverized coal blowing device 5A.
  • the blast furnace main body 2 has a general structure, and a top hopper 7 is provided at the top, and a tuyere 8 and a tap 9 are provided at the bottom.
  • a blow pipe 11 is connected to the tuyere 8, and an injection lance 12 is connected to the blow pipe 11 so as to merge obliquely.
  • the charging conveyor 4 is installed so as to rise from the vicinity of the base portion of the blast furnace body 2 toward the furnace top hopper 7, and the downstream end (upper end portion) of the charging conveyor 4 in the transport direction is the true position of the furnace top hopper 7.
  • the raw material fixed quantity supply apparatus 3 is installed in the upper part of the conveyance direction upstream end (lower end part).
  • the raw material fixed supply device 3 supplies a raw material such as iron ore as a main raw material of pig iron 14 smelted in the blast furnace main body 2, coke as a fuel and a reducing material, and limestone as an impurity removing material at a constant supply rate. Then, these raw materials are charged into the blast furnace main body 2 from the furnace top hopper 7 by the charging conveyor 4, and the smelted pig iron 14 is stored at the bottom of the blast furnace main body 2. The smelted pig iron 14 is taken out from the tap 9.
  • a raw material such as iron ore as a main raw material of pig iron 14 smelted in the blast furnace main body 2
  • coke a fuel and a reducing material
  • limestone as an impurity removing material
  • the pulverized coal blowing device 5A blows pulverized coal (PCI charcoal) as auxiliary fuel from the tuyere 8 (blow pipe 11) of the blast furnace body 2 together with heated and compressed hot air-like blowing air. It is configured to raise the temperature inside.
  • the pulverized coal blowing device 5A includes a reformer 16, a charging line 17, a nitrogen gas feeding device 18, a cyclone separator 19, a storage tank 21, a pulverized coal supply pipe 22, a blowing air feeding device 23, and the like. Has been.
  • the reformer 16 and the cyclone separator 19 are connected by a charging line 17, and a nitrogen gas feeding device 18 is connected to the upstream part of the charging line 17.
  • the storage tank 21 and the injection lance 12 are connected by a pulverized coal supply pipe 22. Further, hot air-like blowing air generated by the blowing air feeding device 23 is supplied to the blow pipe 11.
  • the configuration of the reformer 16 is well known, detailed description thereof is omitted.
  • low-grade coal such as inexpensive subbituminous coal and lignite are used as auxiliary fuel for the blast furnace body 2.
  • PCI charcoal auxiliary fuel
  • the low-grade coal introduced from the receiving hopper 24 is dried and heat-treated a plurality of times to remove moisture and volatile components and then cooled, pulverized by a mill, and auxiliary fuel. It becomes pulverized coal for use.
  • the blow-in air feeding device 23 compresses the air sucked from the air suction pipe 25 by a compressor (not shown), and heats the air to around 1200 ° C. by a heater or burner (not shown). It is a device that generates high-pressure and dry blowing air.
  • the intermediate part of the air suction pipe 25 is formed in a spiral shape that circulates around the pulverized coal supply pipe 22 a plurality of times, for example, and this spiral part serves as a heat exchanger 25a.
  • This heat exchanger 25a is a heat transfer unit that transfers heat generated by the self-heating action of the reformed coal that passes through the inside of the pulverized coal supply pipe 22 to a part that requires heat, for example, the blowing air feeding device 23 in this embodiment. It functions as a means.
  • the pulverized coal made of the reformed coal modified from the low-grade coal by the reformer 16 is sent to the charging line 17 and the nitrogen gas feeding device 18.
  • the gas is mixed with nitrogen gas fed from the gas to form a solid-gas two-phase flow, and is fed to the cyclone separator 19 in an inert atmosphere of nitrogen gas.
  • the cyclone separator 19 is a kind of centrifugal separator, and nitrogen gas is separated and degassed from pulverized coal by centrifugal force, and the nitrogen gas is discharged or collected outside. Thereafter, the pulverized coal is stored in the storage tank 21, and only a necessary amount is supplied from the pulverized coal supply pipe 22 to the injection lance 12.
  • the air (outside air) sucked from the air suction pipe 25 and supplied to the blown air feeding device 23 passes through the heat exchanger 25 a formed in the middle of the air suction pipe 25, and then the pulverized coal supply pipe 22.
  • the heat is exchanged with the heat generated by the pulverized coal consisting of the reformed coal that settles at a relatively slow speed, and the temperature rises. It is supplied and further compressed and heated here to become hot air of high temperature and high pressure around 1200 ° C. That is, the blown air is heat exchanged with the reformed coal before being compressed and heated by the blown air feeding device 23.
  • the pulverized coal (modified coal) supplied to the injection lance 12 is mixed with the blown air supplied to the blow pipe 11, and the pulverized coal is ignited and burned by touching the hot air-like blown air, A flame is formed at the tip of the blow pipe 11 to form a raceway, and the coke charged in the blast furnace body 2 is burned. As a result, the iron ore charged together with the coke is reduced to pig iron (hot metal) 14 and taken out from the tap outlet 9.
  • the pulverized coal blowing device 5A configured as described above is modified from low-grade coal and has self-heating properties as pulverized coal blown together with the blown air heated and compressed from the tuyere 8 of the blast furnace body 2.
  • Use pulverized coal made of charcoal Since reformed coal is much cheaper than raw coal such as bituminous coal, which is generally used, the cost of auxiliary fuel is lowered to reduce the operating cost of the blast furnace facility 1A, thereby reducing the manufacturing cost of pig iron be able to. Further, the heat of the reformed coal can be effectively used for other parts that require heat, thereby contributing to energy saving.
  • the heat generated by the self-heating action of the pulverized coal generated from the reformed coal is sucked into the blown air feeding device 23 as an example of heat transfer means for transferring the heat to other parts that require heat.
  • a heat exchanger 25a is provided at an intermediate portion of the air suction pipe 25 through which the air is passed, so that the air passing through the inside is heat-exchanged with the heat of the pulverized coal passing through the inside of the pulverized coal supply pipe 22. Therefore, the blowing air is heated appropriately by heat exchange with the pulverized coal before the blowing.
  • the cooling effect of the reformed coal in the pulverized coal supply pipe 22 is enhanced and the compression heat of the blown air is increased. Can be increased, and the energy for heating the blown air can be further reduced.
  • FIG. 2 is a schematic configuration diagram of a blast furnace facility 1B provided with a pulverized coal blowing device 5B according to a second embodiment of the present invention.
  • the pulverized coal blowing device 5B is different from the pulverized coal blowing device 5A of the first embodiment (FIG. 1) in that a heat transfer pipe 32 (heat transfer means) extending from the reforming device 16 is provided.
  • the heat transfer pipe 32 is arranged so as to go around the pulverized coal supply pipe 22 a plurality of times and return to the reformer 16 again.
  • the surrounding portion of the heat transfer pipe 32 is a heat exchanger 32a similar to the heat exchanger 25a of the pulverized coal blowing device 5A of the first embodiment.
  • a fluid serving as a heat medium circulates inside the heat transfer pipe 32. Since the configuration of the other parts is the same as that of the pulverized coal blowing device 5A of the first embodiment, the same reference numerals are given to the respective parts and the description thereof is omitted.
  • the heat generated by the self-heating action of the reformed coal passing through the inside of the pulverized coal supply pipe 22 is transferred to the reformer 16 by the heat medium flowing inside the heat transfer pipe 32 and the heat exchanger 32a.
  • this heat is used, for example, in a process of drying low-grade coal. Thereby, the energy expended for drying the low-grade coal can be saved.
  • FIG. 3 is a schematic configuration diagram of a blast furnace facility 1C provided with a pulverized coal blowing device 5C according to a third embodiment of the present invention.
  • This pulverized coal blowing device 5C is different from the pulverized coal blowing device 5A of the first embodiment (FIG. 1) in that an inactivating device 42 (inactivating means) is interposed downstream of the reforming device 16.
  • an inactivating device 42 inactivating means
  • the reformed coal that has been reformed from the low-grade coal by the reformer 16 is deactivated to the extent that a predetermined amount of the self-heating action remains.
  • a specific deactivation method coal that has been carbonized at 300 ° C. to 500 ° C. in the reformer 16 and then cooled is exposed to a treatment gas atmosphere containing oxygen in the deactivation unit 42, A treatment for adsorbing (penetrating) oxygen on the surface and inside is performed. By adjusting the amount of oxygen adsorbed, the degree of self-heating action of the reformed coal can be adjusted.
  • the treatment in the deactivation device 42 is performed so that the reformed coal sent to the charging line 17 after finishing the deactivation process in the deactivation device 42 preserves a certain amount of self-heating effect. Is set.
  • the self-heating effect of the reformed coal can be weakened, so that it is not necessary to transport the reformed coal in a nitrogen atmosphere so that it does not spontaneously ignite, or nitrogen gas
  • the amount of use can be reduced. Therefore, the operating rate of the nitrogen gas feeding device 18 can be reduced, the operating cost of the blast furnace facility 1C can be reduced, and consequently the manufacturing cost of pig iron can be reduced.
  • FIG. 4 is a schematic configuration diagram of a blast furnace equipment 1D provided with a pulverized coal blowing device 5D according to a fourth embodiment of the present invention.
  • the pulverized coal blowing device 5D is different from the pulverized coal blowing device 5A of the first embodiment (FIG. 1) in that the pulverized coal blowing device 5A is only pulverized coal made of modified coal modified by the reformer 16.
  • the pulverized coal blowing device 5 ⁇ / b> D mixes the pulverized coal made of modified coal with the pulverized coal made of generally used raw coal into the blast furnace main body 2. It is a point to be supplied.
  • the pulverized coal blowing device 5D is provided with two cyclone separators 19A and 19B.
  • a mixing tube 52 (mixing unit) is provided in the downstream portion of the pulverized coal blowing device 5D, and the mixing tube 52 is connected to the storage tank 21. Since the configuration of the other parts is the same as that of the pulverized coal blowing device 5A, the same reference numerals are given to the respective parts and the description thereof is omitted.
  • the pulverized coal made of the reformed coal modified by the reformer 16 is supplied from the charging line 17 to the cyclone separator 19A.
  • pulverized coal made of raw coal is supplied to the cyclone separator 19B by a supply device (not shown).
  • two types of pulverized coal are mixed in the mixing pipe 52 and stored in the storage tank 21.
  • the two types of pulverized coal are supplied to the blast furnace main body 2 together with hot air-like blowing air supplied from the blowing air feeding device 23 through the pulverized coal supply pipe 22 in a mixed state.
  • the pulverized coal made of reformed coal and the pulverized coal made of raw coal are mixed in the mixing pipe 52, so that the inside of the mixing pipe 52 and the storage tank 21 and the pulverized coal supply pipe 22 on the downstream side thereof.
  • the moisture contained in the pulverized coal made of raw coal is dried by the self-heating action of the pulverized coal made of modified coal.
  • FIG. 5 is a schematic configuration diagram of a blast furnace facility 1E provided with a pulverized coal blowing device 5E according to a fifth embodiment of the present invention.
  • the pulverized coal blowing device 5E includes the pulverized coal blowing device 5D of the fourth embodiment (FIG. 4) and the deactivation device 42 provided in the pulverized coal blowing device 5C of the third embodiment (FIG. 3). It is a thing.
  • the deactivation device 42 inactivates the reformed coal reformed from the low-grade coal by the reformer 16 to such an extent that a predetermined amount of the self-heating action remains.
  • the structure of the other portions is the same as that of the pulverized coal blowing device 5D.
  • the deactivation device 42 is configured not to completely deactivate the modified coal, and the pulverized coal made of the modified coal, Until the pulverized coal made of raw coal is supplied from the mixing pipe 52 to the blast furnace main body 2 through the pulverized coal supply pipe 22, moisture contained in the pulverized coal made of raw coal is changed from the modified coal.
  • the pulverized coal is dried by self-heating.
  • the raw coal drying process is partially omitted or simplified, and the operating cost of the blast furnace equipment 1E is reduced by reducing equipment, energy, personnel, etc. related to the raw coal drying process.
  • the manufacturing cost of pig iron can be reduced.
  • the self-heating action of the reformed coal can be weakened by the deactivation device 42, it is not necessary to transport the reformed coal in a nitrogen atmosphere so that it does not ignite spontaneously, or the amount of nitrogen gas used is reduced. Can be made. Therefore, the operating rate of the nitrogen gas feeding device 18 can be reduced, and in this respect as well, the operating cost of the blast furnace equipment 1E can be reduced, and consequently, the manufacturing cost of pig iron can be reduced.
  • the operating cost of the blast furnace facilities 1A to 1E can be reduced and the manufacturing cost of pig iron can be reduced. Can do.
  • the present invention is not limited only to the configuration of each of the embodiments described above, and can be appropriately modified or improved within the scope not departing from the gist of the present invention. Embodiments with such modifications and improvements are also possible. It is intended to be included in the scope of rights of the present invention.
  • the heat transfer destination of the reformed coal does not necessarily have to be inside the blast furnace equipment, but may be transferred to an adjacent plant or other equipment.
  • the configurations of the respective embodiments may be combined as appropriate.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)
PCT/JP2013/074404 2012-09-20 2013-09-10 微粉炭吹き込み装置、これを備えた高炉設備、および微粉炭供給方法 WO2014045946A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IN1917DEN2015 IN2015DN01917A (pt) 2012-09-20 2013-09-10
DE112013004589.3T DE112013004589T5 (de) 2012-09-20 2013-09-10 Einblasvorrichtung für pulverisierte Kohle, damit ausgestatteter Hochofen, und Verfahren zum Zuführen von pulverisierter Kohle
CN201380048340.5A CN104641002A (zh) 2012-09-20 2013-09-10 煤粉吹入装置、具备该煤粉吹入装置的高炉设备以及煤粉供给方法
KR1020157006470A KR101648686B1 (ko) 2012-09-20 2013-09-10 미분탄 취입 장치, 이것을 구비한 고로 설비, 및 미분탄 공급 방법
US14/428,558 US20150225804A1 (en) 2012-09-20 2013-09-10 Pulverized-coal injection device, blast furnace facility provided with the same, and pulverized-coal supplying method

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JP2012207274A JP6012360B2 (ja) 2012-09-20 2012-09-20 微粉炭吹き込み装置、これを備えた高炉設備、および微粉炭供給方法
JP2012-207274 2012-09-20

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WO2014045946A8 WO2014045946A8 (ja) 2015-03-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107763651A (zh) * 2017-09-14 2018-03-06 云南中翼鼎东能源科技开发有限公司 一种锅炉给煤的方法及其给煤系统
CN112725556A (zh) * 2021-01-19 2021-04-30 付光明 一种利用高炉铁水除尘循环热烟气加热煤粉的方法和装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN2014DN05770A (pt) * 2012-01-18 2015-04-10 Mitsubishi Heavy Ind Ltd
JP6551470B2 (ja) * 2016-07-29 2019-07-31 Ｊｆｅスチール株式会社 高炉操業方法
JP6551471B2 (ja) * 2016-07-29 2019-07-31 Ｊｆｅスチール株式会社 高炉操業方法
CN107119160A (zh) * 2017-07-10 2017-09-01 中冶华天南京工程技术有限公司 一种带压缩气体预热的高炉喷煤方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011057750A (ja) * 2009-09-07 2011-03-24 Ube Industries Ltd 固体燃料及びその製造方法
JP2011099011A (ja) * 2009-11-04 2011-05-19 Nippon Steel Corp 石炭の改質方法、コークス及び焼結鉱の製造方法並びに高炉の操業方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE630649A (pt) * 1962-04-05
US3240587A (en) * 1962-12-21 1966-03-15 Allied Chem Method for injecting particulate coal into a blast furnace
US4160663A (en) * 1978-02-21 1979-07-10 Jack Hsieh Method for the direct reduction of iron ore
US4528069A (en) * 1983-04-11 1985-07-09 Inland Steel Company Solvent pretreatment of coal to improve coke strength
JPH11310785A (ja) * 1998-04-30 1999-11-09 Mitsubishi Heavy Ind Ltd 石炭改質方法及びその装置
CN101413038B (zh) * 2008-12-04 2011-03-23 沈阳东方钢铁有限公司 一种煤粉纯氧高炉炼铁工艺及其设备
CN102337141B (zh) * 2010-07-16 2013-11-20 张文辉 一种制备高炉喷吹用燃料和运输燃油的方法
CN101899542A (zh) * 2010-08-05 2010-12-01 中冶南方工程技术有限公司 高炉喷煤喷吹系统
JP5541195B2 (ja) 2011-02-24 2014-07-09 Ｊｆｅスチール株式会社 微粉炭の粒度分布測定方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011057750A (ja) * 2009-09-07 2011-03-24 Ube Industries Ltd 固体燃料及びその製造方法
JP2011099011A (ja) * 2009-11-04 2011-05-19 Nippon Steel Corp 石炭の改質方法、コークス及び焼結鉱の製造方法並びに高炉の操業方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107763651A (zh) * 2017-09-14 2018-03-06 云南中翼鼎东能源科技开发有限公司 一种锅炉给煤的方法及其给煤系统
CN112725556A (zh) * 2021-01-19 2021-04-30 付光明 一种利用高炉铁水除尘循环热烟气加热煤粉的方法和装置

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