WO2007105682A1 - コークスの製造方法、及び、銑鉄の製造方法 - Google Patents
コークスの製造方法、及び、銑鉄の製造方法 Download PDFInfo
- Publication number
- WO2007105682A1 WO2007105682A1 PCT/JP2007/054822 JP2007054822W WO2007105682A1 WO 2007105682 A1 WO2007105682 A1 WO 2007105682A1 JP 2007054822 W JP2007054822 W JP 2007054822W WO 2007105682 A1 WO2007105682 A1 WO 2007105682A1
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- Prior art keywords
- coal
- coatus
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- mass
- strength
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2300/00—Process aspects
Definitions
- the present invention relates to a production technology for coatus and a production technology for pig iron using the technology, and more specifically, a production technology for coatus with improved strength, or a coated product obtained.
- the present invention relates to a manufacturing technology for Kotas that can simplify the humidity control process without substantially reducing the strength of one tas, and a manufacturing technology for pig iron using the same.
- Japanese Patent Application Laid-Open No. 9-31469 discloses a method for pretreatment of coal charged in a coke oven that can reliably and stably improve the strength of coatus. After separating the coal into coarse coal and fine coal, 5-40% heavy oil and water are added to the fine coal to form a water slurry, and then granulation with a particle size exceeding the separation point by wet granulation A pretreatment method for coal charged in a coke oven is disclosed in which coal is granulated, dewatered at the next stage, and then mixed with coarse coal.
- JP-A-2003-226879 discloses a coal for charging coke ovens such as strongly caking coal, caking coal, and non-caking coal in order to obtain a high bulk density when producing metallurgical coatas.
- a method for adjusting the particle size to an optimum particle size distribution state is disclosed.
- Japanese Patent No. 3566834 discloses a method for producing a high-strength coatus by an inexpensive method in order to reduce the production cost of blast furnace coatas.
- a heavy tar tar containing 80 wt% or more of a component having a boiling point of 50 ° C or lower than the soft start temperature of the soft coal is added to the raw coal and dry-distilled to produce a high-strength coatus.
- a manufacturing method is disclosed.
- Japanese Patent Application Laid-Open No. 3-7796 discloses a method for producing Kotas, which is a method for producing Kotas that improves strength and productivity, and pulverizes and mixes blended coal and drys the mixed coal in a coke oven.
- a production method of coatas characterized in that the particle size of the blended coal is made fine and a surfactant is added to the blended coal to produce coatus.
- the method of reducing the moisture content of the raw coal used to increase the packing density in the carbonization chamber facilitates the scattering of coal fines, thus reducing the moisture content to less than about 7%.
- the operation of mechanically compressing the charged coal into the carbonization chamber also complicates the work.
- the present invention has been made in view of the above circumstances, and a coatus production method for improving the strength of the obtained coatus, or without substantially reducing the obtained coatus strength.
- Another object of the present invention is to provide a method capable of simplifying the humidity control step and a method for producing pig iron using the coatas obtained by the production method.
- the Cotas production method of the present invention that has been able to solve the above-mentioned problems is the production method of Cotas in which coal is charged into a Cotas furnace carbonization chamber and is carbonized, and 100 mass of raw coal is used as the charging coal. It is characterized by using 1 part by mass or less of coal that does not substantially contain ash. That is, according to the present invention, the strength of the resulting coatas is improved by using, as the charging coal, 1 mass part or less of coal containing substantially no ash with respect to 100 mass parts of the raw coal.
- the manufacturing process for example, humidity control process
- the manufacturing process that affects the strength of the coatus is simplified by utilizing the fact that the strength of the obtained coatus is improved.
- the strength of the coke obtained by conditioning the charge coal and raw coal of non-additive casket with coal that does not substantially contain ash, and the coke strength obtained by carbonizing the coal is substantially the same.
- the coatus can be manufactured by simplifying the humidity control process.
- the carbon content (daf) is 60% or more It is preferable to use soluble components obtained by extraction from less than 95% coal with an organic solvent.
- the organic solvent include organic solvents containing a bicyclic aromatic compound as a main component.
- the present invention includes a pig iron production method characterized by using the coatas obtained by the above-mentioned coatus production method.
- anthracite strong caking coal, caking coal, weak caking coal, non-caking coal, brown coal, peat, etc.
- the definition is not necessarily clear. Absent. Some of the caking coal is sometimes called cohesive charcoal. Therefore, in the present invention, anthracite, strongly caking coal, caking coal, weak caking coal, non-caking coal, etc. are classified by carbon content (da f), and anthracite is carbon content (daf) 91 .
- strong caking coal with carbon content (daf) of 85% to 91% caking coal with carbon content (daf) of 83% to less than 85%
- weak caking Charcoal is carbon with a carbon content (daf) of 80% or more and less than 83%
- non-coking coal is carbon with a carbon content (da f.) Of 78% or more and less than 80%
- lignite is carbon content (daf ) Is 70% or more and less than 78%
- peat is coal whose carbon content (daf) is less than 70%.
- coal with a carbon content (daf) of 85% or more and 91% or less is simply referred to as “strong caking coal”
- coal with a carbon content (daf) of 60% or more and less than 85% is simply “non-caking”.
- a coatus with improved strength can be obtained.
- the humidity control process can be simplified as long as the strength of the resulting coatus is not substantially reduced.
- the coatus obtained by the coatus production method of the present invention can be suitably used for the production of pig iron in a blast furnace.
- FIG. 1 is an explanatory view illustrating an apparatus and process for producing ashless coal used in the present invention.
- the production method of the Cotas of the present invention is a cotas production method in which coal is charged into a coke oven carbonization chamber and carbonized, and the ash content is substantially reduced with respect to 100 parts by mass of raw coal as the charging coal. It is characterized by using coal that does not contain any part of it and adding 1 mass part or less of coal.
- the ashless coal may be coal that does not substantially contain ash, but may contain a small amount of ash.
- the ash content is preferably 5,000 Oppm or less, more preferably 2, OOOppm or less.
- the ash content is a residual inorganic substance when coal is ashed by heating at 815 ° C, and is composed of, for example, caic acid, alumina, iron oxide, lime, magnesia, alkali metal, and the like.
- the ashless coal may be obtained by extraction with an organic solvent from coal having a carbon content (daf) of 60% or more and less than 95% (more preferably 60% or more and less than 85%). It is preferable to use a soluble component.
- An embodiment in which non-caking coal or the like is effectively used as a starting material is a preferable embodiment because there is a risk of drought and it is not necessary to use strong caking coal with a high raw material cost.
- as the coal extracted with the organic solvent weakly caking coal, non-caking coal, lignite, or a mixture thereof having a carbon content (daf) of 70% or more and less than 83% is used. To do.
- the ashless coal is obtained by mixing a coal having a carbon content (daf) of 60% or more and less than 95% (more preferably 60% or more and less than 85%) with an organic solvent.
- a slurry is prepared, the slurry is heated and aged to extract a soluble component in the organic solvent, and the obtained slurry is separated into a supernatant and a concentrated solution in which a solid phase component is concentrated, and the supernatant
- the ashless coal can be obtained by filtering and removing the organic solvent by evaporation.
- FIG. 1 is an explanatory diagram illustrating an apparatus and process for producing ashless coal. In tank 1, coal having a carbon content (d. A.
- the obtained slurry is supplied to an extraction tank 4 where an extraction process is performed by a pump 2. At that time, the slurry is heated to a predetermined temperature by the preheater 3.
- the extraction tank 4 After the soluble component is extracted into the organic solvent while stirring the slurry using the stirrer 10, the obtained slurry is supplied to the gravity settling tank 5.
- gravity sedimentation is performed to settle the solid phase component (arrow 11), and the slurry is separated into a supernatant liquid and a liquid in which the solid phase component is concentrated.
- the obtained supernatant is supplied to the filter unit 8 and settled in the gravity sedimentation tank 5.
- the solid phase component concentrate is recovered in the solid phase component concentrate receiver 6.
- the supernatant liquid is filtered by the filter member 7 of the filter unit 8, and the obtained filtrate is recovered in a supernatant liquid receiver 9 that recovers the supernatant liquid.
- ashless coal can be obtained by evaporating and removing the organic solvent from the collected supernatant.
- a general drying method such as a spray drying method, a distillation method, or a vacuum drying method can be applied.
- the coal concentration in the slurry is suitably 10 to 35% by mass.
- the conditions for heating and aging the slurry to extract soluble components in the organic solvent include, for example, The slurry is held at 300 ° C to 420 ° C for 5 to 120 minutes to solubilize soluble components in the coal. This is because a temperature lower than 300 ° C is insufficient to weaken the bonds between the molecules constituting the coal, and the proportion of soluble components that can be extracted from the coal decreases. On the other hand, when the temperature is higher than 420 ° C, the pyrolysis reaction of coal becomes active and recombination of generated pyrolysis radicals occurs, so that the ratio of soluble components to be extracted also decreases.
- the temperature at which the obtained slurry is separated into the supernatant liquid and the solid phase component concentrate by gravity sedimentation is preferably from 300 ° C to 420 ° C. This is because if the temperature is lower than 300 ° C, a part of the components dissolved in the liquid phase component is precipitated, and the yield of ashless coal may be lowered.
- the organic solvent is preferably an organic solvent mainly composed of a bicyclic aromatic compound similar to a coal structural unit in which a solvent having high coal solubility is preferred.
- the organic solvent preferably has a boiling point of 180 ° C to 330 ° C. When the boiling point is lower than 180 ° C, the recovery rate of the organic solvent evaporated and removed from the supernatant liquid may decrease. On the other hand, if the boiling point exceeds 330 ° C, separation of coal and organic solvent becomes difficult, and the recovery rate of organic solvent may also decrease.
- bicyclic aromatic compound examples include, for example, naphthalene (boiling point: 218.C); methylnaphthalene (boiling point: 241 to 242.C), dimethylnaphthalene (boiling point: 26 :! to 272 ° C), Naphthalene with aliphatic side chain such as trimethylnaphthalene Biphenyls; biphenyls having aliphatic side chains or aromatic substituents, or mixtures thereof.
- Examples of coal having a carbon content (daf) of 60% or more and less than 95% used as a starting material for producing ashless coal include those having the following characteristics, for example. It is preferable to use it.
- the volatile content of the non-caking coal or the like is preferably 30% or more, more preferably 32% or more, preferably 40% or less, more preferably 36% or less.
- the average reflectance of the non-caking coal or the like is preferably 0.6 or more, more preferably 0.8 or more, preferably 1.0 or less, more preferably 0.9 or less.
- the total inert such as non-caking coal is preferably 5% or more, more preferably 15% or more, preferably 35% or less, more preferably 20% or less.
- Gieseler maximum fluidity (logMFD) such as non-coking coal is preferably 3. O (logddpm) or more, more preferably 3.3 (logddpm) or more, preferably 4.5 aogddpm) or less, more preferably Is less than 3.6 (logddpm). Volatile content is measured by the method stipulated in JIS M8812, average reflectance is measured by the method stipulated by JIS M8816, and the Gieseller maximum fluidity (logMFD) is measured by the Gieseller plastometer method specified by JIS M8801. it can.
- the total inert (TI) is calculated using the following formula, using the ratio of semi-Fujinit and the ratio of microstructural component group (Maceral 'group) in the analysis value of coal microstructural component (maceral) of JIS M8816. Can be calculated.
- the raw coal used in the present invention will be described.
- the ashless coal as charging coal is 1 part by mass or less, more preferably 0.7 parts by mass or less, and further preferably 0.5 parts by mass or less with respect to 100 parts by mass of the raw coal. It is preferable to use the one with charcoal added.
- the lower limit of the content of ashless coal is not particularly limited, but is preferably 0.2 parts by mass or more.
- the coking coal for example, a single type or brand of coal, or a mixture of a plurality of types of brand coal can be used. It is preferable to use a blended charcoal mixed with. In addition, since the particle size varies depending on the type and brand of coal, it is preferable to transport the coal in the coal yard to a pulverizer and pulverize so that the particle size becomes a predetermined one.
- the blended coal includes, for example, a coal having a carbon content (daf) of 85% to 91% and a coal having a carbon content (daf) of 60% to less than 85%. Is suitable.
- the coal having the carbon content (daf) of 60% or more and less than 85% the more preferable one is weakly caking coal, non-caking coal having a carbon content (daf) of 78% or more and less than 83%, or And mixtures thereof.
- strong caking coal and weak caking examples include an embodiment composed of charcoal, an embodiment composed of strong caking coal and non-caking coal, and an embodiment composed of strong caking coal, weak caking coal and non-caking coal.
- the carbon content (daf) in the blended coal is 85. / 0 % to 91% coal (strong caking coal) is blended to increase the strength of the resulting coatus.
- coal strong caking coal
- the whole charcoal is 100 parts by mass, 10 parts by mass or more is preferable, and 40 parts by mass or more is more preferable. If the amount of strong caking coal is less than 10 parts by mass, the caking component is too short, so even if 1 mass part or less of ashless coal is added to 100 parts by mass of coal blend, it is desirable. In some cases, it may not be possible to obtain the coust strength.
- the upper limit of the amount of strong caking coal is not particularly limited, but 100 parts by mass is preferable, 90 parts by mass is more preferable, and 60 parts by mass. This is because if the amount of strong caking coal increases too much, the raw material cost during the production of coatus increases.
- coal having a carbon content (daf) of 60% or more and less than 85% (non-caking coal, etc.) is preferably blended so as to have a total blending power / mass part with strong caking coal.
- the blended coal obtained by blending strong caking coal and non-caking coal or the like preferably has the following characteristics.
- the volatile content of the blended coal is preferably 15% or more, more preferably 26% or more, preferably 35% or less, more preferably 29. / 0 or less.
- the average reflectance of the blended coal is preferably 0.65 or more, more preferably 1.00 or more, preferably 1.60 or less, more preferably 1.10 or less.
- the total inertness of the blended coal is preferably 15% or more, more preferably 20% or more, preferably 35% or less, more preferably 23% or less.
- the blender coal has a Gieseller maximum fluidity (logMFD) of preferably 0 ⁇ 7 (logddpm) or more, more preferably 2 ⁇ 0 (logddpm) or more, preferably 3.5 (logddpm) or less. Is less than 2 ⁇ 3 (logddpm).
- the blended coal has a particle size composition of 3 mm or less, preferably 50% or more, more preferably 75% or more, preferably 90% or less, more preferably 85% or less.
- the wide numerical range of each characteristic is a suitable range that can be used as a raw material for blast furnace coatas. By making each of the characteristics within a narrower numerical range, it is possible to substantially reduce the strength of the coatus. Is obtained.
- the production method of the coatus of the present invention is a method of charging carbonized coal to 100 parts by mass of the raw coal and adding 1 mass part or less of the ashless coal to a coke oven carbonization chamber and subjecting to dry distillation.
- the raw coal is conditioned and the water content is adjusted. Use what you have written. This is because if the amount of water in the coal charge is too large, an excessive amount of heat is required during dry distillation, and if it becomes uneconomical, it can cause variations in quality.
- the strength of the resulting coatus is improved by adding ashless coal to the raw coal, so that the humidity control step affecting the obtained coatus strength can be modified as follows. .
- Humidity-conditioned coal is used as the charging coal. That is, if the conditioned coal is used as the charging coal, the strength of the ashless coal is higher than the strength of the coatus obtained by using the ashless coal conditioned to the same degree as the additive coal. Improved coatus is obtained.
- the moisture content is about 5% to Cortus with almost the same strength as that obtained by dry distillation of 7% coking coal (no coal distribution added) can be obtained.
- the moisture content is about 7% to 9%.
- charged coal in which 1 mass part or less of ashless coal is added to 100 mass parts of raw coal is charged into a coke oven carbonization chamber and subjected to dry distillation.
- the packing density when charging the coal into the carbonization chamber is not particularly limited. For example, 600 kg / m 3 or more is preferable, 650 kg / m 3 or more is more preferable, and 1000 kg / m 3 or less is preferable. 850 kgZm 3 or less is more preferable.
- the packing density of charging coal is related to the above-described moisture content when the operation of mechanically compacting is not performed, and generally the charging coal having a low moisture content is used.
- the packing density in the carbonization chamber can be increased. For example, when coal with a moisture content of about 7% is used, the packing density in the coke oven carbonization chamber is usually about 720 kg / m 3 .
- the conditions for carbonizing the charging coal are not particularly limited, and normal carbonization conditions in the production of a cotas using a coke oven can be adopted, for example, 950 ° C or higher, more preferably 1000 ° C. or higher, 1200 ° C or lower, more preferably 1050 ° C or lower, and 8 hours or longer, more preferably 10 hours or longer, more preferably 24 hours or shorter, more preferably 20 hours or shorter. preferable.
- the present invention includes a pig iron production method characterized by using the coatus obtained by the coatus production method of the present invention. Since the coatus obtained by the production method of the present invention is excellent in strength, it can be suitably used for producing pig iron in a blast furnace. That is, if the coatus obtained by the manufacturing method of the present invention is used, the gas permeability during the pig iron production in the blast furnace is improved. In addition, in a mode in which the humidity control step is omitted or the degree of humidity control is reduced, a cheap coatus can be obtained.
- a known method may be adopted.
- iron ore and coatus are alternately laminated in a blast furnace in layers, and hot air is blown from the bottom of the blast furnace, and fine powder as necessary.
- the method of blowing charcoal can be mentioned.
- ashless coal was added to the blended coal to prepare charging coal.
- a soluble component (ash content: 600ppm) extracted from Australian caking coal (carbon content (daf) 84%) using 1-methylnaphthalene was used.
- the slurry after the extraction treatment is supplied to the gravity sedimentation tank 5 at a flow rate of 15 kg / h, and gravity sedimentation is performed to separate the supernatant liquid and the solid phase component concentrate, and the supernatant liquid is supplied to the filter unit 8 at a flow rate of 3 kgZh.
- the solid component concentrate was discharged from the bottom of the gravity sedimentation tank 5 to the solid component concentrate receiver 6 at a flow rate of 12 kgZh.
- the supernatant liquid was filtered through the filter unit 8, and then collected in the supernatant liquid receiver 9, and the organic solvent was removed by evaporation from the collected liquid by spray drying to obtain ashless coal (ash content 600ppm).
- the charged coal was filled into a can container having a width of 378 mm, a length of 121 mm, and a height of 114 mm so as to obtain a desired filling density. Place these 4 cans in a steel retort (size: width 380mm x length 430mm x height 350mm) and put the retort in a double-sided heating furnace that can heat the can in the width direction.
- the charge coal was carbonized. Dry distillation was performed at 1000 ° C for 10 hours, after which the retort was removed from the electric furnace and allowed to cool naturally for about 16 hours.
- type I strength was measured.
- a cylindrical container made of SUS (length: 720 mm, circular bottom diameter: 132 mm) was used as the equipment for the I-type strength test. 200 g of the sampnore was placed in this container, and 20 times a minute. Rotating at a rotational speed of 30 minutes for 30 minutes, the impact from a total of 600 rotational movements was measured. The rotation of this cylinder is provided with a rotation axis at 360 mm, which is the middle of the cylinder length of 720 mm. The cylinder was rotated to the center, and the bottom of the cylinder was drawn in a circle with a diameter of 720mm.
- I-type strength index 16 °° 100 X 9.5 mm Mass on sieve (unit: g) Z200g
- the rotational strength of the coatus is divided into one in which the coatus lumps are broken as large lumps and evaluated for volume destruction and one in which surface destruction due to surface wear is evaluated.
- the type I strength index of 16 °° used in the invention is an index used to evaluate surface fracture.
- Ash-Australian weakly caking coal (82.6%) 25 ⁇ *-G Charging coal filling density (kg m 3 ) 720 740 745 760 780 Ashless coal 0.5 mass part added 84.0 84.5 84.7 85.1 85.6 Ashless When no charcoal is added 83.2 83.8 84.0 84.5 85.1 Blend: parts by mass, blended charcoal: Carbon content in Katsuko (daf)
- the present invention can be suitably applied to the production of coatus and the production of pig iron.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Coke Industry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006071704A JP4950527B2 (ja) | 2006-03-15 | 2006-03-15 | コークスの製造方法、及び、銑鉄の製造方法 |
| JP2006-071704 | 2006-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007105682A1 true WO2007105682A1 (ja) | 2007-09-20 |
Family
ID=38509502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/054822 Ceased WO2007105682A1 (ja) | 2006-03-15 | 2007-03-12 | コークスの製造方法、及び、銑鉄の製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4950527B2 (ja) |
| KR (1) | KR101023302B1 (ja) |
| CN (2) | CN104277856B (ja) |
| WO (1) | WO2007105682A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2871226A4 (en) * | 2012-07-06 | 2016-02-24 | Kobe Steel Ltd | COKE AND METHOD FOR THE PRODUCTION THEREOF |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5328180B2 (ja) * | 2008-03-10 | 2013-10-30 | 株式会社神戸製鋼所 | 無灰炭の製造方法 |
| JP5247193B2 (ja) * | 2008-03-17 | 2013-07-24 | 株式会社神戸製鋼所 | コークスの製造方法、及び、銑鉄の製造方法 |
| PT2707458E (pt) * | 2011-05-11 | 2015-12-30 | Triplan Ag | Sistema fechado de lama de coque e método para obter pedaços comercializáveis de coque de petróleo a partir de coque de petróleo solidificado numa unidade de tambor de coque |
| JP5852521B2 (ja) * | 2012-06-29 | 2016-02-03 | 株式会社神戸製鋼所 | 副生炭を主原料とするコークスの製造方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5448802A (en) * | 1977-09-26 | 1979-04-17 | Kawasaki Steel Co | Manufacture of coke for iron manufacture |
| JPS5575485A (en) * | 1978-12-05 | 1980-06-06 | Mitsui Cokes Kogyo Kk | Coke production and coke composition |
| JPH05287279A (ja) * | 1992-04-14 | 1993-11-02 | Nippon Steel Corp | 石炭の乾留方法 |
| JPH06116565A (ja) * | 1992-10-09 | 1994-04-26 | Nippon Steel Corp | 調湿炭のコークス品質制御方法 |
| JP2003055667A (ja) * | 2001-08-17 | 2003-02-26 | Sumitomo Metal Ind Ltd | 高炉用コークスの製造方法 |
| WO2007010674A1 (ja) * | 2005-07-19 | 2007-01-25 | Kansai Coke And Chemicals Co., Ltd. | コークスの製造方法、及び、銑鉄の製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192477A (zh) * | 1997-12-26 | 1998-09-09 | 杨本 | 一种利用含铁粉尘制造生铁的方法 |
| JP4295544B2 (ja) * | 2003-04-09 | 2009-07-15 | 株式会社神戸製鋼所 | 冶金用改質炭の製造方法、ならびに冶金用改質炭を用いた還元金属および酸化非鉄金属含有スラグの製造方法 |
| CN1211456C (zh) * | 2003-08-12 | 2005-07-20 | 山西同嘉钢铁有限公司 | 一种冶金焦及其生产方法 |
| JP4045229B2 (ja) * | 2003-10-15 | 2008-02-13 | 株式会社神戸製鋼所 | 無灰炭の製造方法 |
-
2006
- 2006-03-15 JP JP2006071704A patent/JP4950527B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-12 CN CN201410443055.XA patent/CN104277856B/zh not_active Expired - Fee Related
- 2007-03-12 WO PCT/JP2007/054822 patent/WO2007105682A1/ja not_active Ceased
- 2007-03-12 KR KR1020087022302A patent/KR101023302B1/ko not_active Expired - Fee Related
- 2007-03-12 CN CNA2007800077232A patent/CN101395249A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5448802A (en) * | 1977-09-26 | 1979-04-17 | Kawasaki Steel Co | Manufacture of coke for iron manufacture |
| JPS5575485A (en) * | 1978-12-05 | 1980-06-06 | Mitsui Cokes Kogyo Kk | Coke production and coke composition |
| JPH05287279A (ja) * | 1992-04-14 | 1993-11-02 | Nippon Steel Corp | 石炭の乾留方法 |
| JPH06116565A (ja) * | 1992-10-09 | 1994-04-26 | Nippon Steel Corp | 調湿炭のコークス品質制御方法 |
| JP2003055667A (ja) * | 2001-08-17 | 2003-02-26 | Sumitomo Metal Ind Ltd | 高炉用コークスの製造方法 |
| WO2007010674A1 (ja) * | 2005-07-19 | 2007-01-25 | Kansai Coke And Chemicals Co., Ltd. | コークスの製造方法、及び、銑鉄の製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2871226A4 (en) * | 2012-07-06 | 2016-02-24 | Kobe Steel Ltd | COKE AND METHOD FOR THE PRODUCTION THEREOF |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007246674A (ja) | 2007-09-27 |
| KR20080094724A (ko) | 2008-10-23 |
| CN101395249A (zh) | 2009-03-25 |
| JP4950527B2 (ja) | 2012-06-13 |
| CN104277856B (zh) | 2018-10-16 |
| CN104277856A (zh) | 2015-01-14 |
| KR101023302B1 (ko) | 2011-03-18 |
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