WO2015005190A1 - 焼結鉱製造用の炭材内装造粒粒子とその製造方法および焼結鉱の製造方法 - Google Patents

焼結鉱製造用の炭材内装造粒粒子とその製造方法および焼結鉱の製造方法 Download PDF

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WO2015005190A1
WO2015005190A1 PCT/JP2014/067656 JP2014067656W WO2015005190A1 WO 2015005190 A1 WO2015005190 A1 WO 2015005190A1 JP 2014067656 W JP2014067656 W JP 2014067656W WO 2015005190 A1 WO2015005190 A1 WO 2015005190A1
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Prior art keywords
carbonaceous material
sintered ore
granulated particles
iron
particles
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PCT/JP2014/067656
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English (en)
French (fr)
Japanese (ja)
Inventor
友司 岩見
大山　伸幸
山本　哲也
隆英 樋口
一洋 岩瀬
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Ｊｆｅスチール株式会社
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Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to KR1020177025685A priority Critical patent/KR102110643B1/ko
Priority to CN201480033411.9A priority patent/CN105308194B/zh
Priority to JP2015510530A priority patent/JP5790966B2/ja
Priority to AU2014288374A priority patent/AU2014288374B9/en
Priority to KR1020157034462A priority patent/KR20160003860A/ko
Priority to EP14822156.7A priority patent/EP3020834B1/en
Priority to BR112016000103-6A priority patent/BR112016000103B1/pt
Publication of WO2015005190A1 publication Critical patent/WO2015005190A1/ja
Priority to PH12015502818A priority patent/PH12015502818A1/en

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing

Definitions

  • the present invention relates to a technology for producing sintered ore used as a steelmaking raw material in a blast furnace or the like, and specifically, a carbonaceous material-containing granulated particle used for producing a sintered ore, a method for producing the same, and a carbonaceous material therefor.
  • the present invention relates to a method for producing sintered ore using an interior granulated product.
  • the raw materials containing iron-containing powder generated in the iron-making process such as blast furnace / converter dust, rolling scale, sludge, iron ore powder or the like, respectively, coal
  • Some of them are granulated by adding carbonaceous materials such as coke and starch, mixing and kneading, and further supplying a starch solution with a granulator.
  • the carbonaceous material in the pellets is burned down during the production of the sintered ore, and thus the iron-containing raw material such as iron ore and the carbonaceous material are actually arranged close to each other. It is not a thing.
  • simply reducing the particle size of iron ore or carbon for the purpose of close placement increases the resistance of gas to propagate heat too much, leading to a decrease in reaction rate and reduced iron production efficiency. I will let you.
  • Patent Documents 2 to 5 basically consists of mixing raw materials containing iron ore and other iron-containing materials with carbonaceous materials such as coke and then agglomerating them by hot forming or agglomeration without firing. As it is, it is used as a raw material for iron making in a blast furnace or the like.
  • these agglomerates are non-fired ones consisting of a uniform mixture or multi-layered granulated material, so that the strength is insufficient and the powdering is intense. Further, there is a problem in that the amount of use is limited because it leads to reduced powdering and hinders the air permeability of the blast furnace.
  • Patent Document 6 discloses that a nucleus is formed from a raw material containing 5% by weight or more of metallic iron and / or 5% or more of carbon, An agglomeration for iron making was formed by forming one or more outer peripheral layers containing the cores with a raw material containing 10 wt% or more of metallic iron and 5 wt% or less of carbon and firing and agglomerating in an oxidizing atmosphere at 300 to 1300 ° C. Mines have been proposed.
  • Patent Document 6 also requires the use of metallic iron as a raw material, and since there are quantitative restrictions on the raw material used, there are restrictions on the amount that can be produced as agglomeration for iron making. There is a problem.
  • Patent Document 7 iron oxide containing low iron oxide dust or mill scale is coated around a carbon material core made of small coke and coated with iron oxide powder containing metal iron such as iron dust and mill scale. After the shell is formed, an oxidation treatment is performed by heating in the atmosphere at a temperature of 200 ° C. or higher and lower than 300 ° C. for 0.5 to 5 hours, so that only the surface of the iron oxide shell is made of iron oxide having a high degree of oxidation.
  • JP 2001-348625 A Japanese Patent No. 3502008 Japanese Patent No. 3502011 JP 2005-344181 A JP 2002-241853 A JP-A-10-183262 JP 2011-195943 A JP 2011-225926 A
  • the present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to use metal iron-containing iron oxide powders such as iron-making dust and mill scale, and thus the production amount is limited.
  • a carbonaceous material-incorporated agglomerated mineral (sintered ore) in which the iron-containing raw material and the carbonaceous material are arranged close to each other, and proposing a production method thereof,
  • the object is to propose a method for producing a sintered ore using a carbonaceous material-internal granulated product.
  • the inventors have intensively studied to solve the above problems.
  • a carbonaceous material internal granulated product for the production of sintered ore a small coke was used as the carbonaceous material core in the center, and a CaO-containing raw material for the melting point was added as the outer layer raw material.
  • the particle size was 250 ⁇ m.
  • Pseudo particles are granulated using the following iron ore powder (pellet feed (PF)) and charged into a sintering machine as part of the sintering raw material to produce sintered ore (agglomerated ore).
  • PF pellet feed
  • the present invention provides a carbonaceous material-containing granulated particle for producing sintered ore, which is a pseudo particle formed by forming an outer layer mainly composed of iron ore powder and a CaO-containing raw material around the carbonaceous material core and the carbonaceous material core. It is.
  • the iron ore powder in the carbonaceous material-containing granulated particles of the present invention is characterized by being a pellet feed having a particle size of 10 to 1000 ⁇ m.
  • the pellet feed in the carbonaceous material-containing granulated particles of the present invention is characterized in that the particle size is 250 ⁇ m or less.
  • the outer layer of the carbonaceous material-containing granulated particles of the present invention has a melting point of 1200 ° C. or higher and 1500 ° C. or lower.
  • the carbon material serving as the carbon material core in the carbon material-containing granulated particles of the present invention is coke particles having a particle size of 3 mm or more.
  • the thickness of the outer layer in the carbon material-containing granulated particles of the present invention is 2 mm or more.
  • the carbonaceous material-containing granulated particles of the present invention are characterized by having a particle size of 8 mm or more.
  • the present invention provides a charging layer by charging a sintering raw material obtained by mixing the carbonaceous material-containing granulated particles described above with normal granulated particles onto a pallet of a sintering machine.
  • This is a method for producing a carbonaceous material-containing sintered ore that is formed and produced by the combustion heat of the carbonaceous material contained in the normal granulated particles.
  • the normal granulated particles in the method for producing a carbonaceous material-containing sintered ore of the present invention are characterized in that the particle size is smaller than that of the carbonaceous material-containing granulated particles granulated by a drum mixer.
  • low-priced iron ore powder pellet feed (PF)
  • PF pellet feed
  • the production amount is not limited, and no oxidation treatment is required. Therefore, the carbonaceous material-containing granulated particles for producing sintered ore can be produced at low cost.
  • the said carbon material interior granulated particle of this invention can be made into a sintered ore using the conventional sintering machine, it can manufacture a carbon material interior sintered ore in large quantities and cheaply.
  • the carbonaceous material-containing sintered ore of the present invention has sufficient strength to be used as a raw material for a blast furnace and the like, and has a structure in which an iron-containing raw material and a carbonaceous material are arranged close to each other. , Lowering the furnace temperature, reducing the fuel ratio and contributing to the reduction of manufacturing costs.
  • FIG. 3 is a Fe 2 O 3 —CaO binary phase diagram. It is a figure explaining reaction in an outer layer at the time of sintering of carbonaceous material interior granulation grain. It is a SiO 2 —Fe 2 O 3 —CaO ternary phase diagram.
  • iron-containing raw materials such as iron ore and sintered ore are heated to a high temperature by the combustion heat of carbonaceous materials such as coke and reduced to produce pig iron.
  • the charging of the iron-making raw material from the top of the blast furnace is usually performed by separating the iron-containing raw material and the carbonaceous material that have been sized to about 20 to 40 mm and charging them in layers.
  • the thickness of the iron-containing raw material layer and the carbonaceous material layer is reduced, the distance between the iron-containing raw material and the carbonaceous material is reduced, so that the reduction reaction rate can be increased.
  • simply mixing and charging the iron-containing raw material and the carbonaceous material increases the resistance of gas transfer, which is a heat transfer means, and slows the reaction rate.
  • the ferro-coke is a technique in which a carbonaceous material and iron ore (iron-containing raw material) are mixed and baked and hardened to make a steelmaking raw material.
  • iron ore iron-containing raw material
  • the above-mentioned ultra-miniaturization is a technology that mainly uses a refined carbon material.
  • FIG. 2 shows the relationship between heat exchange, iron ore reduction reaction, and carbonization (coke) gasification reaction when the iron ore and the carbonaceous material are close to each other.
  • Fe 2 O 3 and CO react with each other to cause a reduction reaction to become Fe and CO 2 .
  • This reaction is an exothermic reaction.
  • a gasification reaction gas reforming reaction
  • Budwar reaction a gasification reaction in which CO 2 and C react to generate CO occurs.
  • This reaction is an endothermic reaction (hereinafter, both reactions are also referred to as “iron-making reactions”).
  • the iron-containing raw material and the carbonaceous material are close to each other, that is, it is effective to increase the iron-making reaction by arranging the iron-containing raw material and the carbonaceous material close to each other.
  • an iron-containing raw material and a carbonaceous material are mixed in advance, and a carbonaceous material agglomerated mineral in which the carbonaceous material is embedded in the iron-containing raw material becomes the ultimate form.
  • FIG. 2 As shown in FIG. 2, a reduction reaction occurs in which Fe n O m is reduced by CO generated by the gasification reaction, and CO 2 generated by the reduction reaction causes the next gasification reaction. Reactions occur in a chain from the inside to the outside, and the Fe n O m inside is sequentially self-reduced to produce Fe (metallic iron). As described above, since the reduction reaction and the gasification reaction proceed inside the agglomerate, the heat supply from the outside is small, and the temperature in the furnace can be lowered accordingly.
  • the present invention has a small coke as a carbon material core in the center, and around the carbon material core, pseudo particles coated with iron ore powder having an adjusted melting point are used for the production of a carbon material interior agglomerate. That is, the above-mentioned problems are solved by using carbonaceous material-containing granulated particles for the production of sintered ore.
  • the carbon material-containing agglomerated mineral of the present invention is the same as the carbon material-containing agglomerated mineral of the prior art in that small coke is used as the carbon material core at the center of the granulated particles (pseudo particles).
  • the present invention covers the periphery of the carbonaceous material core with iron ore powder and adds quick lime to the iron ore powder to lower the melting point, thereby forming a dense outer layer at the time of sintering. It differs from the prior art in that it prevents the burning / disappearance of carbonaceous material nuclei.
  • the iron ore powder it is desirable to use a pellet feed having a particle size of preferably 10 to 1000 ⁇ m, more preferably 250 ⁇ m or less.
  • This pellet feed is fine ore of 90% or more in 1 mm or less, and is excellent in that it is mainly composed of high-grade (high Fe, low gangue) hematite and magnetite and can be obtained in large quantities at low cost.
  • the iron ore powder used in the present invention may be mill scale, converter exhaust gas recovery dust (OG dust), tailing generated during the beneficiation, in addition to the pellet feed, as long as the particle size is within the above range. These may be mixed in a pellet feed.
  • the melting point of the above-mentioned magnetite, particularly high-grade magnetite is as high as about 1580 ° C. as can be seen from the Fe 2 O 3 —CaO binary phase diagram shown in FIG. It is much higher than the preferred sintering temperature and does not melt at the normal sintering temperature, ie no sintering reaction takes place.
  • the present invention reduces the melting point of the outer layer by adding a CaO-containing raw material to the iron ore powder, and melts at an early stage at the sintering temperature (1200 ° C. or higher) to form a fused layer, It is characterized in that the adsorption layer acts as an oxygen barrier layer to prevent combustion / disappearance of the carbon material core in which the carbon material-incorporated granulated particles are embedded, thereby leaving the carbon material core.
  • an interior carbon material nucleus can be made to exist. This is because, as shown in FIG. 5, due to the oxygen blocking effect of the outer layer formed around the central core of the carbonaceous material-containing granulated particles (pseudoparticles), the C forming the central core and the intrusion O 2 This is because the inner layer is basically held by the CO gas in a reducing atmosphere by the reaction, so that it is considered that the carbonaceous material can remain.
  • the amount of quicklime CaO to be added as a melting point adjusting agent is such that the pellet feed (PF) used for the outer layer has a small amount of gangue components (eg, hematite (Fe 2 O 3 ) 97), such as Ango American-PF. .7 mass%) may be determined from the Fe 2 O 3 —CaO binary phase diagram shown in FIG. 4 described above.
  • gangue components eg, hematite (Fe 2 O 3 ) 97
  • Ango American-PF. .7 mass% may be determined from the Fe 2 O 3 —CaO binary phase diagram shown in FIG. 4 described above.
  • quicklime functions as a melting point regulator and also acts as a binder.
  • the carbonaceous material-incorporated granulated particles of the present invention preferably use a carbonaceous material having a low volatile content, such as a small coke and / or anthracite, such as Honggay coal, as the granulated nucleus. .
  • a carbonaceous material having a low volatile content such as a small coke and / or anthracite, such as Honggay coal
  • small coke is suitable because it is easily available and does not generate gas when heated.
  • the particle size of the carbon material serving as the core is preferably a particle having a size of 3 mm or more, not a fine particle, in order to prevent combustion / disappearance of the carbon material nucleus during the sintering process. More preferably, it is 4 mm or more, More preferably, it is 5 mm or more.
  • the outer layer formed around the carbon material core has a thickness of 2 mm or more. If it is less than 2 mm, even if it melts during sintering to form a dense outer layer, it may not function sufficiently as an oxygen barrier layer, and the carbon material core has many irregularities, so the carbon material core is completely covered. It is because there is a possibility that it cannot be done. Usually, since granulated particles are heated from the outside, it is difficult to raise the temperature at the time of heating toward the center side. Therefore, the thicker the outer layer, the lower the melting point of the outer layer is preferably adjusted. Therefore, the range of 3 to 7 mm is more preferable.
  • the particle size can be made larger than that of a normal sintering raw material (granulated particles).
  • a normal sintering raw material granulated particles
  • the above-mentioned normal granulated particles are obtained by using an auxiliary raw material containing iron ore powder, a carbonaceous material, and a CaO-containing raw material as a granulated raw material, and using a drum mixer, a pelletizer or the like, particles of 2 to 4 mm (arithmetic mean diameter) This refers to pseudo particles granulated to a diameter (hereinafter the same).
  • the particle size in this invention means the particle size measured by sieving.
  • FIG. 7 shows an example of the method for producing the carbon material-containing granulated particles and the carbon material-containing sintered ore of the present invention.
  • Coke particles that are core particles of 3 mm ⁇ or more, pellet feed (PF) that is iron ore powder of 250 ⁇ m or less, and quick lime CaO as a melting point adjusting agent are charged into a pelletizer, mixed, granulated, and larger than 8 mm ⁇ .
  • Sano charcoal interior granulated particles (pseudo particles).
  • the above raw materials are granulated by using coke particles having a large particle size as nuclei, so they may be added simultaneously. Further, the charging ratio between the coke particles and the PF is determined so that the thickness of the outer PF layer becomes 2 mm or more with respect to the coke particles as the core particles.
  • the carbonaceous material-containing granulated particles (pseudoparticles) obtained as described above are obtained by mixing conventional raw materials with a drum mixer or the like and granulating them. ) And mixed with both granulated particles, and is carried into a surge hopper of the sintering machine, and is loaded from the surge hopper onto a pallet on which the sintering machine is circulated.
  • the carbonaceous material-containing granulated particles (pseudo particles) have a larger particle diameter than ordinary granulated particles for sintering (pseudo particles), the temperature during sintering is higher than that of the upper layer due to segregation during charging. Since it is contained in a large amount on the middle layer and lower layer sides, which tend to be high, the sintering reaction can be sufficiently advanced.
  • the carbonaceous material-containing sintered ore (agglomerated ore) of the present invention can be produced using an actual sintering machine, it can be mass-produced inexpensively.
  • pellet feed (PF) as a raw material for the outer layer can be obtained at a low price and in large quantities, there are no production restrictions.
  • the following sintering experiment was performed using the carbonaceous material-containing granulated particles of the present invention in which lump coke was coated with PF and ordinary granulated particles as sintering raw materials.
  • the sintered raw material is iron ore powder as a granulated raw material, limestone in an amount of CaO of 10 mass% as a secondary raw material, and further 5 mass% as a carbonaceous material.
  • a quantity of coke powder was charged into a drum mixer, stirred and mixed, and granulated to a particle size of 2.9 mm in arithmetic mean diameter.
  • the granulated particle of T4 of Table 1 is a comparative example in which 2 mass% of a carbonaceous material is mixed in the PF of the outer layer in the same manner as normal granulated particles.
  • T7 in Table 1 is a comparative example in which the melting point of the outer layer is not adjusted (no addition of CaO, melting point: 1580 ° C.).
  • a raw material charging portion shown in FIG. 8 having an inner diameter of 300 mm ⁇ and a height of 400 mm was used, and on the lower layer side 1/3 (133 mm) of the raw material charging portion, The material-containing granulated particles and the ordinary granulated particles are mixed at a mass ratio of 1: 1 so that the carbonaceous material-containing granulated particles are uniformly mixed so as to be embedded in the ordinary granulated particles. / 3 (267mm), after charging normal granulated particles, ignite the upper layer surface of the charging layer, suck the air above the test pan with a blower placed under the test pan The carbon material in the sintered raw material was burned by introducing into the charging layer.
  • FIG. 1 An appearance photograph of the sintered ore (agglomerated ore) obtained in the sintering experiment is shown in FIG. From this figure, granulated particles of T1 to T3, T5, and T6 suitable for the present invention have obtained carbonaceous material-containing sintered ore and are moderately fused with surrounding ordinary sintered ore. I understand that. That is, in this example, in addition to obtaining a sintered ore in which the carbonaceous material is in an interior state, a carbonaceous material-incorporated sintered ore integrated with the surrounding sintered ore is obtained. It is presumed that there will be no adverse effect even if the sintering machine is charged as a sintering raw material.
  • the sintered ore obtained from the granulated particles T7 not subjected to the melting point adjustment remained in a monocyte without being fused with the surrounding ordinary sintered ore, and was in a burned state. Therefore, when carbonaceous material-containing granulated particles without adjusting the melting point of the outer layer are charged into an actual sintering machine, not only carbonaceous material-containing sintered ore can be obtained but also firing with surrounding sintered ore proceeds. Therefore, it is expected that the pulverization rate will increase and the yield will be greatly reduced due to the destruction site of sintered ore. Further, in the case of the granulated particles T4 in which 2 mass% of coke was mixed in the outer layer, it was in an overmelted state, and did not remain as pellets in the obtained sintered ore.
  • FIG. 10 shows a micrograph of the carbonaceous material-containing sintered ore T5 that has been appropriately sintered and integrated with the surrounding sintered ore. From this figure, in the sintered ore that has been sintered appropriately, the carbonaceous material core is covered with the PF layer, and on the surface layer of the PF layer, a fusion layer is observed between PF and other sintering raw materials. That is, the PF layer is fused with the surrounding sintered raw material while the coke forming the central core remains. Therefore, there is no fear that the strength of the sintered ore is reduced due to the presence of the carbonaceous material-containing sintered ore.
  • FIG. 11 shows the result of element mapping using EPMA on the cross section of the carbonaceous material-containing sintered ore T5 that has been appropriately sintered. Carbon remains in the pellets remaining in the sintered ore, that is, there is an internal carbon material, and the Fe concentration is partially increased around the carbon. It can be seen that metallic iron is produced by reduction.
  • the cause of such a reduction reaction is considered as follows.
  • the carbonaceous material core composed of small coke particles is located in the central portion, and thus has a complete carbonaceous material interior structure. Therefore, similar to the iron making reaction of the sinter shown in FIG. 2B, the reduction reaction that occurs between the iron oxide powder and the coke particles that are close to each other inside the granulated particles, It is considered that coke gasification reaction proceeded at the same time and metallic iron was produced at the stage of sinter production. Therefore, when the carbonaceous material-containing sintered ore of the present invention is charged into a blast furnace, the iron making reaction will proceed at a higher speed and higher efficiency and at a lower temperature than a normal sintered ore. There is expected.
  • FIG. 12 (a) shows the change of the reducibility index (reduction rate) RI depending on the reduction time.
  • the carbonaceous material-containing sintered ore of the present invention has a reduction rate as compared with a normal sintered ore. Is high, that is, the reduction reaction rate is high.
  • FIG. 12 (b) shows the relationship between the reducibility index RI and the reduced powder index RDI of the carbonaceous material-containing sintered ore of the present invention, and the normal sinter ore reducibility index RI and reduced powder. Compared with the relationship with the index RDI, the carbonaceous material-containing sintered ore of the present invention is superior in both the reducible index RI and the reduced powder index RDI compared to the ordinary sintered ore. I understand that.
  • the technique of the present invention is not limited to the embodiment described above, for example, as a sintering heat source, in addition to the carbon material added to the sintering raw material, a sintering technique for supplying gaseous fuel, Further, it can be applied to a sintering technique in which oxygen is supplied in an enriched manner.

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PCT/JP2014/067656 2013-07-10 2014-07-02 焼結鉱製造用の炭材内装造粒粒子とその製造方法および焼結鉱の製造方法 WO2015005190A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
KR1020177025685A KR102110643B1 (ko) 2013-07-10 2014-07-02 소결광 제조용 탄재 내장 조립 입자와 그 제조 방법
CN201480033411.9A CN105308194B (zh) 2013-07-10 2014-07-02 内包炭材料的烧结矿的制造方法
JP2015510530A JP5790966B2 (ja) 2013-07-10 2014-07-02 炭材内装焼結鉱の製造方法
AU2014288374A AU2014288374B9 (en) 2013-07-10 2014-07-02 Carbon material-containing granulated particles in production of sintered ore, method for producing the same and method for producing sintered ore
KR1020157034462A KR20160003860A (ko) 2013-07-10 2014-07-02 소결광 제조용 탄재 내장 조립 입자와 그 제조 방법 및 소결광의 제조 방법
EP14822156.7A EP3020834B1 (en) 2013-07-10 2014-07-02 Carbon material-containing granulated particles in production of sintered ore, method for producing the same and method for producing sintered ore
BR112016000103-6A BR112016000103B1 (pt) 2013-07-10 2014-07-02 Partículas granuladas contendo material de carbono para fabricar minério sinterizado, e métodos para produzir as mesmas e para produzir minério sinterizado
PH12015502818A PH12015502818A1 (en) 2013-07-10 2015-12-18 Carbon material-containing granulated particles in production of sintered ore, method for producing the same and method for producing sintered ore

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JP2013144214 2013-07-10
JP2013-144214 2013-07-10
JP2013-215334 2013-10-16
JP2013215334 2013-10-16

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CN (2) CN107419093B (zh)
AU (1) AU2014288374B9 (zh)
BR (1) BR112016000103B1 (zh)
PH (1) PH12015502818A1 (zh)
WO (1) WO2015005190A1 (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017172020A (ja) * 2016-03-25 2017-09-28 Ｊｆｅスチール株式会社 焼結鉱製造用の炭材内装造粒粒子およびそれを用いた焼結鉱の製造方法
JP2017179508A (ja) * 2016-03-31 2017-10-05 Ｊｆｅスチール株式会社 焼結鉱製造用の炭材内装造粒粒子およびそれを用いた焼結鉱の製造方法
WO2017221774A1 (ja) * 2016-06-22 2017-12-28 Ｊｆｅスチール株式会社 炭材内装焼結鉱の製造方法
JP2018003153A (ja) * 2016-06-22 2018-01-11 Ｊｆｅスチール株式会社 焼結鉱の製造方法
US9970085B2 (en) * 2014-07-25 2018-05-15 Sumitomo Metal Mining Co., Ltd. Method for producing pellets and method for producing iron-nickel alloy
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US9970085B2 (en) * 2014-07-25 2018-05-15 Sumitomo Metal Mining Co., Ltd. Method for producing pellets and method for producing iron-nickel alloy
JP2017172020A (ja) * 2016-03-25 2017-09-28 Ｊｆｅスチール株式会社 焼結鉱製造用の炭材内装造粒粒子およびそれを用いた焼結鉱の製造方法
JP2017179508A (ja) * 2016-03-31 2017-10-05 Ｊｆｅスチール株式会社 焼結鉱製造用の炭材内装造粒粒子およびそれを用いた焼結鉱の製造方法
WO2017221774A1 (ja) * 2016-06-22 2017-12-28 Ｊｆｅスチール株式会社 炭材内装焼結鉱の製造方法
JP2018003153A (ja) * 2016-06-22 2018-01-11 Ｊｆｅスチール株式会社 焼結鉱の製造方法
JP6264517B1 (ja) * 2016-06-22 2018-01-24 Ｊｆｅスチール株式会社 炭材内装焼結鉱の製造方法
JP2018141204A (ja) * 2017-02-28 2018-09-13 Ｊｆｅスチール株式会社 炭材内装造粒粒子の製造方法
JP2020007576A (ja) * 2018-07-03 2020-01-16 Ｊｆｅスチール株式会社 炭材内装焼結鉱の製造方法及び製造設備
JP2020084302A (ja) * 2018-11-30 2020-06-04 Ｊｆｅスチール株式会社 炭材内装焼結鉱の製造方法および炭材内装焼結鉱の製造設備
CN110724814A (zh) * 2019-11-25 2020-01-24 洛阳凯正环保工艺设备有限公司 一种高钙含铁除尘灰的冷固球团制备工艺
CN112251550A (zh) * 2020-09-30 2021-01-22 首钢集团有限公司 一种高炉入炉矿石的品位的调节方法

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