WO2012098713A1 - 高炉操業方法 - Google Patents
高炉操業方法 Download PDFInfo
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- WO2012098713A1 WO2012098713A1 PCT/JP2011/066771 JP2011066771W WO2012098713A1 WO 2012098713 A1 WO2012098713 A1 WO 2012098713A1 JP 2011066771 W JP2011066771 W JP 2011066771W WO 2012098713 A1 WO2012098713 A1 WO 2012098713A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reducing material
- blown
- lance
- pulverized coal
- blast furnace
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 101
- 239000007789 gas Substances 0.000 claims abstract description 93
- 239000003245 coal Substances 0.000 claims abstract description 92
- 239000007787 solid Substances 0.000 claims abstract description 49
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 239000002699 waste material Substances 0.000 claims description 24
- 238000011017 operating method Methods 0.000 claims description 20
- 229910000805 Pig iron Inorganic materials 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 239000000571 coke Substances 0.000 claims description 13
- 239000004449 solid propellant Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- -1 organic resources Substances 0.000 claims description 4
- 239000001294 propane Substances 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 64
- 238000007664 blowing Methods 0.000 abstract description 23
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000012159 carrier gas Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 239000003949 liquefied natural gas Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002801 charged material Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- 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
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B2005/005—Selection or treatment of the reducing gases
-
- 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
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
- C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- a solid reducing material is blown from an inner pipe of the double pipe lance and a flammable reducing material is blown from an outer pipe of the double pipe lance.
- a flammable reducing material is blown from the inner pipe of the double pipe lance and a solid reducing material is blown from the outer pipe of the double pipe lance.
- the solid reducing material is preferably pulverized coal.
- the solid reducing material is preferably blown in a range of 50 to 300 kg per ton of pig iron. More preferably, the solid reducing material is blown in a range of 60 to 180 kg per 1 ton of pig iron.
- FIG. 1 is an overall view of a blast furnace to which the blast furnace operating method of the present embodiment is applied.
- a blow pipe 2 for blowing hot air is connected to a tuyere 3 of a blast furnace 1, and a lance 4 is passed through the blow pipe 2. is set up.
- a combustion space called a raceway 5 exists in the coke deposit layer in the hot air blowing direction ahead of the tuyere 3, and the reducing material is mainly burned and gasified in this combustion space.
- a two-color thermometer is a radiation thermometer that measures temperature using thermal radiation (electromagnetic wave movement from a high-temperature object to a low-temperature object).
- thermal radiation electromagnetic wave movement from a high-temperature object to a low-temperature object.
- it is one of the wavelength distribution types to obtain the temperature by measuring the temperature change of the wavelength distribution, and in particular to measure the wavelength distribution, the radiant energy at two wavelengths is measured and the ratio
- the temperature is measured from
- the combustion state of the unburned char is determined by collecting unburned char with a probe at a position of 150 mm and 300 mm from the tip of the lance 14 in the blast pipe 12 of the experimental furnace 11, filling the resin, polishing, and then analyzing the void in the char by image analysis. The rate was measured and judged.
- the solid-gas ratio of pulverized coal and the carrier gas that transports the pulverized coal is 10-25 kg / Nm 3 in the solid-gas ratio in the method of transporting powder, that is, pulverized coal (high concentration transport) with a small amount of gas.
- the solid-gas ratio is 5 to 10 kg / Nm 3 .
- air can also be used as the carrier gas. The evaluation of the experimental results is based on the combustion temperature, combustion position, unburned char combustion status and diffusibility (mainly pulverized coal) when only pulverized coal is blown from a single pipe, and from the inner pipe of the double pipe lance.
- FIG. 6 shows the result of the combustion experiment described above.
- pulverized coal blown in a carrier gas (using nitrogen gas N 2).
- N 2 nitrogen gas
- Oxygen excess rate (air blown from tuyere and lance, pure oxygen, oxygen amount in solid reducing material) / (CO 2 , H 2 O, SO by burning carbon, hydrogen, sulfur in solid reducing material) (The amount of oxygen required to make 2 )
- FIG. 8 shows a state of a water jacket of a double pipe lance in which pulverized coal is blown from the inner pipe and city gas is blown from the outer pipe.
- FIG. 9 shows a state of a water jacket of a double pipe lance in which city gas is blown from the inner pipe and pulverized coal is blown from the outer pipe.
- the only way to cool the outer tube of a double-pipe lance that cannot be cooled with water is to dissipate heat with the gas supplied to the inside.
- the gas flow rate affects the lance temperature. Therefore, the inventors measured the temperature of the lance surface by variously changing the flow rate of the gas blown from the outer pipe of the double pipe lance.
- the experiment was carried out by blowing city gas from the outer pipe of the double pipe lance and blowing pulverized coal from the inner pipe, and the gas flow rate was adjusted by adjusting N 2 as an inert gas to the city gas blown from the outer pipe. did.
- N 2 may be a part of the carrier gas for carrying the pulverized coal.
- the measurement results are shown in FIG.
- 15A schedule 5S and steel pipe called 25A schedule 5S were used for the outer pipe of the double pipe lance.
- the inner tube of the double tube lance, steel called 15A schedule 90 using one, to measure the temperature of the lance surface by changing the total flow rate of N 2 and city gas in various ways.
- 15A”, “20A”, and “25A” are nominal dimensions of the outer diameter of the steel pipe specified in JIS G 3459, 15A is the outer diameter 21.7 mm, 20A is the outer diameter 27.2 mm, and 25A is the outer diameter 34. 0.0 mm.
- the “schedule” is a nominal dimension of the thickness of the steel pipe defined in JIS G 3459.
- the schedule 5S is 1.65 mm
- the 15A schedule 90 is 3.70 mm.
- a steel pipe is used as the outer pipe of the double pipe lance, it is practical to use a steel pipe having the above-described two types of outer diameters. It is also possible to use a 20A schedule 90 (wall thickness: 3.9 mm) and a 25A schedule 90 (wall thickness: 4.5 mm).
- plain steel can also be used.
- the outer diameter of the steel pipe is specified in JIS G 3453
- the wall thickness is specified in JIS G 3454.
- the temperature of the lance surface decreases in inverse proportion to the increase in the total flow rate of the gas blown from the outer pipe of the double pipe lance for each steel pipe of different size. . This is because if the steel pipe size is different, the gas flow rate is different even at the same total gas flow rate.
- the surface temperature of a double pipe lance exceeds 880 degreeC, creep deformation will occur and a double pipe lance will bend. Therefore, when a 20A schedule 5S or 25A schedule 5S steel pipe is used for the outer pipe of the double pipe lance and the surface temperature of the double pipe lance is 880 ° C.
- the flow rate of the blown gas from the outer pipe is 85 Nm 3.
- the outlet flow velocity of the outer pipe of the double pipe lance when these steel pipes are used is 20 m / sec or more.
- the outer pipe of the double pipe lance The surface temperature is 880 ° C. or lower, and the double-pipe lance is not deformed or bent.
- the flow rate of the carrier gas of the solid reducing material or the flammable reducing material blown from the outer pipe of the double pipe lance is adjusted, and the outlet flow velocity of the outer pipe of the double pipe lance is 20 m / sec.
- the solid reducing material such as pulverized coal blown from the double pipe lance per 50 tons of pig iron is 50 to 300 kg.
- the lance since the lance has a lower blow limit due to equipment restrictions, if the blown reductant ratio is reduced, it is necessary to take measures such as blowing the blown tuyere down, resulting in a tuyere that blows in the reductant.
- the solid reducing material is 50 kg or more per 1 ton of pig iron. Further, when the ratio of the blown reducing material to the solid reducing material is lowered, in the heat exchange between the gas and the charged material, the ratio of the charged material that is supplied with heat is increased and the furnace top gas temperature is decreased. In view of preventing the furnace top gas temperature from becoming the dew point or lower, the solid reducing material is 50 kg or more, preferably 60 kg or more per 1 ton of pig iron.
- the ratio of blown-in reducing material due to airflow restrictions when aiming for low-reduced material ratio operation.
- Solid reducing material charged from the top of the furnace as the ratio of blown-in solid reducing material increases. Since the (coke) ratio decreases, ventilation becomes difficult. However, if the total pressure loss (blowing pressure-furnace top pressure) exceeds the allowable level, the reducing material (coke) ratio is increased even if the blowing reducing material is increased. In addition to impeding stable operation, it may not be possible to reduce it, and it may lead to inoperability.
- the solid reducing material is 300 kg or less per 1 ton of pig iron.
- flammable reducing materials such as city gas and natural gas (LNG) require 1 kg or more per ton of pig iron to ensure a high combustion temperature, and the upper limit is 1 t of pig iron for protection of tuyere and furnace top equipment. 50 kg or less per unit. The amount is preferably 10 to 35 kg per 1 ton of pig iron. From the above points, the solid reducing material / flammable reducing material (each mass%) is 1 to 300, preferably 1 to 180, when calculated backward.
- LNG city gas and natural gas
- the oxygen enrichment rate during blowing is 2 to 10%, preferably 2.5 to 8%.
- the average particle diameter of pulverized coal is 10 to 100 ⁇ m, in the present invention, when combustibility is ensured and supply from the lance and supply to the lance are taken into consideration, it is preferably 20 to 50 ⁇ m. Good. If the average particle size of the pulverized coal is less than 20 ⁇ m, the combustibility is excellent, but the lance is easily clogged during pulverized coal transportation (gas transportation), and if it exceeds 50 ⁇ m, the pulverized coal combustibility may be deteriorated.
- the ratio of pulverized coal to the all solid reducing material is preferably 80 mass% or more.
- pulverized coal and waste plastics, waste solid fuel (RDF), organic resources (biomass), waste materials, etc. differ in the amount of heat due to the reaction. It tends to be unstable.
- waste plastics, solid waste fuel (RDF), organic resources (biomass), waste materials, etc. have a lower calorific value due to the combustion reaction. Since the substitution efficiency with respect to the solid reducing material to be introduced is lowered, the ratio of pulverized coal is preferably 80 mass% or more.
- waste plastic, waste solid fuel (RDF), organic resources (biomass), and waste materials can be mixed and used with pulverized coal as fine particles of 6 mm or less, preferably 3 mm or less.
- the ratio with pulverized coal can be mixed by merging with pulverized coal fed by carrier gas. You may mix and use beforehand with pulverized coal.
- converter gas in addition to city gas and natural gas, converter gas, blast furnace gas, and coke oven gas generated at steelworks can be used as the flammable reducing material in addition to propane gas and hydrogen.
- pulverized coal (solid reducing material) 6 and city gas (flammable reducing material) 9 are blown from the double pipe lance 4 provided in the tuyere 3, and the feathers
- the city gas (flammable reducing material) 9 that comes into contact with the O 2 being blown first burns, so that pulverized coal (
- the temperature of the solid reducing material (6) is significantly increased, thereby increasing the heating rate of the pulverized coal (solid reducing material) 6 and sufficiently combusting.
- the combustion temperature is greatly improved.
- the unit can be reduced, and the deformation of the double pipe lance 4 due to the temperature rise can be prevented by setting the outlet flow velocity of the outer pipe of the double pipe lance 4 to 20 to 120 m / sec.
- the total flow rate of the gas blown from the outer pipe of the double pipe lance 4 is set to 85 to 800 Nm 3 / h or more to prevent the double pipe lance 4 from being deformed due to the temperature rise. be able to.
- 1 is a blast furnace
- 2 is a blow pipe
- 3 is a tuyere
- 4 is a lance
- 5 is a raceway
- 6 is pulverized coal (solid reducing material)
- 7 is coke
- 8 is char
- 9 is city gas (flammable reduction) Material)
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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)
Abstract
Description
本発明は、上記のような問題点に着目してなされたものであり、より一層の燃焼温度の向上及び還元材原単位の低減を可能とする高炉操業方法を提供することを目的とするものである。
また、前記高炉操業方法において、前記二重管ランスの内側管から易燃性還元材を吹込むと共に、二重管ランスの外側管から固体還元材を吹込むのが好ましい。
前記高炉操業方法において、前記固体還元材を銑鉄1t当たり50~300kgの範囲で吹込むのが好ましい。前記固体還元材を銑鉄1t当たり60~180kgの範囲で吹込むのがより好ましい。
また、前記固体還元材の微粉炭の割合を80mass%以上として、廃プラスチック、廃棄物固形燃料、有機性資源、廃材を混合使用するのが好ましい。
また、前記易燃性還元材を銑鉄1t当たり1~50kgの範囲で吹込むのが好ましい。前記易燃性還元材を銑鉄1t当たり10~35kgの範囲で吹込むのがより好ましい。
図1は、本実施形態の高炉操業方法が適用された高炉の全体図である。図に示すように、高炉(blast furnace)1の羽口(tuyere)3には、熱風を送風するための送風管(blow pipe)2が接続され、この送風管2を貫通してランス4が設置されている。羽口3の熱風送風方向先方のコークス堆積層には、レースウエイ(raceway)5と呼ばれる燃焼空間が存在し、主として、この燃焼空間で還元材の燃焼、ガス化が行われる。
以上の点から、固体還元材/易燃性還元材(各mass%)は、逆算すると、1~300、好ましくは1~180となる。
Claims (11)
- ランスを介して羽口から易燃性還元材と固体還元材とを吹込む高炉操業方法であって、前記易燃性還元材と固体還元材とを二重管ランスで吹込み、前記二重管ランスの外側管の出口流速を20~120m/secとし、且つ羽口への送風の酸素過剰率を0.7~1.3としたことを特徴とする高炉操業方法。
- 前記二重管ランスの内側管から固体還元材を吹込むと共に、二重管ランスの外側管から易燃性還元材を吹込むことを特徴とする請求項1に記載の高炉操業方法。
- 前記二重管ランスの内側管から易燃性還元材を吹込むと共に、二重管ランスの外側管から固体還元材を吹込むことを特徴とする請求項1に記載の高炉操業方法。
- 前記固体還元材が微粉炭であることを特徴とする請求項1乃至3の何れか一項に記載の高炉操業方法。
- 前記固体還元材を銑鉄1t当たり50~300kgの範囲で吹込むことを特徴とする請求項4に記載の高炉操業方法。
- 前記固体還元材を銑鉄1t当たり60~180kgの範囲で吹込むことを特徴とする請求項5に記載の高炉操業方法。
- 前記固体還元材の微粉炭に、廃プラスチック、廃棄物固形燃料、有機性資源、廃材を混合することを特徴とする請求項4乃至6の何れか一項に記載の高炉操業方法。
- 前記固体還元材の微粉炭の割合を80mass%以上として、廃プラスチック、廃棄物固形燃料、有機性資源、廃材を混合使用することを特徴とする請求項7に記載の高炉操業方法。
- 前記易燃性還元材が都市ガス、天然ガス、プロパンガス、水素、転炉ガス、高炉ガス、コークス炉ガスであることを特徴とする請求項1乃至8の何れか一項に記載の高炉操業方法。
- 前記易燃性還元材を銑鉄1t当たり1~50kgの範囲で吹込むことを特徴とする請求項9に記載の高炉操業方法。
- 前記易燃性還元材を銑鉄1t当たり10~35kgの範囲で吹込むことを特徴とする請求項10に記載の高炉操業方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137021642A KR101536626B1 (ko) | 2011-01-18 | 2011-07-15 | 고로 조업 방법 |
CN2011800653873A CN103339266A (zh) | 2011-01-18 | 2011-07-15 | 高炉操作方法 |
AU2011356008A AU2011356008B2 (en) | 2011-01-18 | 2011-07-15 | Method for operating blast furnace |
EP11856085.3A EP2653563B1 (en) | 2011-01-18 | 2011-07-15 | Method for operating blast furnace |
BR112013018060-9A BR112013018060B1 (pt) | 2011-01-18 | 2011-07-15 | Método para operar alto-forno |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011007954A JP2011168886A (ja) | 2010-01-19 | 2011-01-18 | 高炉操業方法 |
JP2011-007954 | 2011-01-18 | ||
JP2011-007953 | 2011-01-18 | ||
JP2011007953A JP2011168885A (ja) | 2010-01-19 | 2011-01-18 | 高炉操業方法 |
JP2011-152079 | 2011-07-08 | ||
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Cited By (3)
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EP3040426A4 (en) * | 2013-08-28 | 2016-08-31 | Jfe Steel Corp | METHOD OF OPERATING A HIGH STOVE |
CN113744811A (zh) * | 2021-07-14 | 2021-12-03 | 鞍钢集团朝阳钢铁有限公司 | 一种在线调整高炉热量的计算方法 |
CN115595389A (zh) * | 2022-10-25 | 2023-01-13 | 上海大学(Cn) | 一种高炉氢气和生物质颗粒耦合喷吹系统及方法 |
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JP6258039B2 (ja) | 2014-01-07 | 2018-01-10 | 新日鐵住金株式会社 | 高炉の操業方法 |
JP6269533B2 (ja) | 2015-03-02 | 2018-01-31 | Jfeスチール株式会社 | 高炉操業方法 |
JP6443361B2 (ja) * | 2016-02-26 | 2018-12-26 | 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 |
EP3789355A1 (en) * | 2019-09-04 | 2021-03-10 | Linde GmbH | A method of operating a shaft furnace |
KR20220082037A (ko) * | 2020-01-23 | 2022-06-16 | 제이에프이 스틸 가부시키가이샤 | 고로의 조업 방법 및 고로 부대 설비 |
WO2024103122A1 (en) * | 2022-11-17 | 2024-05-23 | Newsouth Innovations Pty Limited | Co-injection of hydrogen and biomass in ironmaking for decarbonisation |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62142706A (ja) * | 1985-12-17 | 1987-06-26 | Kawasaki Steel Corp | 高炉内への粉粒体吹込み方法 |
JPS62238307A (ja) * | 1986-04-10 | 1987-10-19 | Kobe Steel Ltd | 高炉への難燃性燃料の吹込方法 |
JPH0129847B2 (ja) | 1986-03-28 | 1989-06-14 | Kobe Steel Ltd | |
JPH03176680A (ja) | 1989-12-06 | 1991-07-31 | Hitachi Ltd | Ic試験装置 |
JPH05179323A (ja) * | 1992-01-06 | 1993-07-20 | Nippon Steel Corp | 高炉操業法 |
JP2006152434A (ja) * | 2004-10-28 | 2006-06-15 | Jfe Steel Kk | 高炉操業方法 |
JP2006233332A (ja) * | 2005-01-31 | 2006-09-07 | Jfe Steel Kk | 高炉操業方法 |
JP2006312757A (ja) * | 2005-05-06 | 2006-11-16 | Jfe Steel Kk | 気体還元材吹込み用のランス、高炉および高炉操業方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1050712A (zh) * | 1989-10-06 | 1991-04-17 | 北京信通集团公司 | 从顺丁烯二酸生产dl-酒石酸的路线 |
KR100782684B1 (ko) * | 2001-07-10 | 2007-12-07 | 주식회사 포스코 | 고로내 미분의 고체연료 취입장치 |
TWI277654B (en) * | 2005-01-31 | 2007-04-01 | Jfe Steel Corp | Method for operating blast furnace |
-
2011
- 2011-07-08 JP JP2011152079A patent/JP5699833B2/ja active Active
- 2011-07-15 WO PCT/JP2011/066771 patent/WO2012098713A1/ja active Application Filing
- 2011-07-15 BR BR112013018060-9A patent/BR112013018060B1/pt active IP Right Grant
- 2011-07-15 CN CN2011800653873A patent/CN103339266A/zh active Pending
- 2011-07-15 EP EP11856085.3A patent/EP2653563B1/en active Active
- 2011-07-15 KR KR1020137021642A patent/KR101536626B1/ko active IP Right Grant
- 2011-07-15 AU AU2011356008A patent/AU2011356008B2/en active Active
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62142706A (ja) * | 1985-12-17 | 1987-06-26 | Kawasaki Steel Corp | 高炉内への粉粒体吹込み方法 |
JPH0129847B2 (ja) | 1986-03-28 | 1989-06-14 | Kobe Steel Ltd | |
JPS62238307A (ja) * | 1986-04-10 | 1987-10-19 | Kobe Steel Ltd | 高炉への難燃性燃料の吹込方法 |
JPH03176680A (ja) | 1989-12-06 | 1991-07-31 | Hitachi Ltd | Ic試験装置 |
JPH05179323A (ja) * | 1992-01-06 | 1993-07-20 | Nippon Steel Corp | 高炉操業法 |
JP2006152434A (ja) * | 2004-10-28 | 2006-06-15 | Jfe Steel Kk | 高炉操業方法 |
JP2006233332A (ja) * | 2005-01-31 | 2006-09-07 | Jfe Steel Kk | 高炉操業方法 |
JP2006312757A (ja) * | 2005-05-06 | 2006-11-16 | Jfe Steel Kk | 気体還元材吹込み用のランス、高炉および高炉操業方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2653563A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3040426A4 (en) * | 2013-08-28 | 2016-08-31 | Jfe Steel Corp | METHOD OF OPERATING A HIGH STOVE |
CN113744811A (zh) * | 2021-07-14 | 2021-12-03 | 鞍钢集团朝阳钢铁有限公司 | 一种在线调整高炉热量的计算方法 |
CN113744811B (zh) * | 2021-07-14 | 2024-03-29 | 鞍钢集团朝阳钢铁有限公司 | 一种在线调整高炉热量的计算方法 |
CN115595389A (zh) * | 2022-10-25 | 2023-01-13 | 上海大学(Cn) | 一种高炉氢气和生物质颗粒耦合喷吹系统及方法 |
CN115595389B (zh) * | 2022-10-25 | 2023-12-08 | 上海大学 | 一种高炉氢气和生物质颗粒耦合喷吹系统及方法 |
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TW201231677A (en) | 2012-08-01 |
EP2653563A4 (en) | 2017-03-08 |
KR101536626B1 (ko) | 2015-07-14 |
AU2011356008B2 (en) | 2015-05-07 |
BR112013018060A2 (pt) | 2020-10-27 |
BR112013018060B1 (pt) | 2021-09-21 |
JP2013019007A (ja) | 2013-01-31 |
EP2653563B1 (en) | 2018-11-28 |
TWI516604B (zh) | 2016-01-11 |
KR20130122659A (ko) | 2013-11-07 |
EP2653563A1 (en) | 2013-10-23 |
AU2011356008A1 (en) | 2013-07-25 |
JP5699833B2 (ja) | 2015-04-15 |
CN103339266A (zh) | 2013-10-02 |
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