CN105755280A - Composite binder for iron ore pellet as well as preparation method and application method thereof - Google Patents
Composite binder for iron ore pellet as well as preparation method and application method thereof Download PDFInfo
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- CN105755280A CN105755280A CN201610224364.7A CN201610224364A CN105755280A CN 105755280 A CN105755280 A CN 105755280A CN 201610224364 A CN201610224364 A CN 201610224364A CN 105755280 A CN105755280 A CN 105755280A
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- iron ore
- binding agent
- compound binding
- ore pellets
- pellets compound
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 372
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 186
- 239000011230 binding agent Substances 0.000 title claims abstract description 161
- 239000008188 pellet Substances 0.000 title claims abstract description 146
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title abstract description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 72
- 239000012141 concentrate Substances 0.000 claims abstract description 40
- 238000005453 pelletization Methods 0.000 claims abstract description 40
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 229920002472 Starch Polymers 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000008107 starch Substances 0.000 claims abstract description 19
- 235000019698 starch Nutrition 0.000 claims abstract description 19
- 238000005303 weighing Methods 0.000 claims abstract description 15
- 229920002907 Guar gum Polymers 0.000 claims abstract description 14
- 239000000665 guar gum Substances 0.000 claims abstract description 14
- 235000010417 guar gum Nutrition 0.000 claims abstract description 14
- 229960002154 guar gum Drugs 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 131
- 239000000203 mixture Substances 0.000 claims description 23
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 13
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 13
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 13
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 13
- 229920013818 hydroxypropyl guar gum Polymers 0.000 claims description 13
- 229920002261 Corn starch Polymers 0.000 claims description 9
- 239000008120 corn starch Substances 0.000 claims description 9
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 8
- 150000001768 cations Chemical class 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 150000002170 ethers Chemical class 0.000 claims description 6
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 6
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 6
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 6
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 6
- 239000001341 hydroxy propyl starch Substances 0.000 claims description 5
- 235000013828 hydroxypropyl starch Nutrition 0.000 claims description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 239000000440 bentonite Substances 0.000 description 22
- 229910000278 bentonite Inorganic materials 0.000 description 22
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 22
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 229920002521 macromolecule Polymers 0.000 description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a composite binder for an iron ore pellet as well as a preparation method and application method thereof and belongs to the technical field of pellet production. The composite binder for the iron ore pellet comprises the following components in percentage by mass: 5-40% of starch ether, 5-20% of cellulose ether, 5-20% of guar gum and 50-70% of calcium carbonate, wherein the particle size of calcium carbonate is 0.02-1.0 micronmeter, and the particle sizes of other raw materials are respectively less than 100 meshes. The preparation method comprises the following steps of: weighing the raw materials in ratio, and uniformly mixing, so that the composite binder for the iron ore pellet is obtained. The application method comprises the following steps of: directly adding into iron ore concentrate or uniformly dispersing into water to obtain uniform slurry and then adding into the iron ore concentrate, uniformly mixing, pelletizing, and roasting, so that an iron ore oxidized pellet is obtained. The obtained composite binder has good binding property, low usage amount and less residue and can be used for improving the roasting ball strength, grade of the iron ore pellet and ironmaking economic benefit when applied to preparation of the iron ore pellet.
Description
Technical field
The present invention relates to pelletizing production technical field in ferrous metallurgical industry, be specifically related to a kind of iron ore pellets compound binding agent and preparation and application thereof.
Background technology
Along with the abundant ore source that can directly enter stove ironmaking is day by day exhausted, the exploitation of lean ore resources is developed rapidly.Lean ore resources is through broken, ore grinding and the technique such as sorts and can obtain high-grade fine iron breeze, but fine iron breeze is difficult to directly enter stove, it is necessary to just can enter stove through agglomeration and smelt.Sintering with pelletizing is two kinds different fine grinding Iron concentrate agglomeration technology.Iron ore pellets because having that TFe is of high grade, physical property and the advantage such as metallurgical performance is good, it is believed that be the high-quality furnace charge optimizing Bf Burden.
Pellet binder is to prepare the indispensable raw material of iron mine acid pellet.Bentonite has that cost is low, improve the advantages such as material balling property, adds bentonitic iron mine wet bulb resistance to compression and drop strength is high, finished ball Physical Metallurgy performance is good, bentonite thus be domestic and international widely used pellet binder.In pelletizing production, the actual amount of China's bentonite adhesive is 2.0%～3.0%, and high person reaches more than 5.0%.But, the bentonitic mineral being mainly composed of silicon-aluminum containing, this will certainly reduce the Iron grade of pellet.Pelletizing production practice have shown that, bentonitic proportioning often increases by 1%, and pellet Iron grade reduces about 0.6%, enters stove Iron grade and often reduces by 1.0%, and blast furnace ironmaking coke ratio increases by 2.0%, and yield reduces by 3.0%.Iron grade reduces and the increase of ironmaking energy consumption is that bentonite produces the maximum drawback of pelletizing as binding agent.As can be seen here, developing low-cost, low sial content, efficient novel organic or compound binding agent, be very urgent to China's pelletizing industrial expansion.
Adopt organic binder bond to substitute bentonite, flux consumption and the blast furnace quantity of slag can be reduced under identical furnace charge basicity, improve pelletizing Iron grade.In organic binder bond exploitation and application aspect, leading has the country such as the U.S. and West Europe, and what application was comparatively ripe has the binding agents such as Peridur, Alcotac, SNF-FLoform.After-flame and residual are few substantially when high temperature for organic binder bond, it is impossible to providing slag key for high-temperature concretion, there is burst temperature low, amount of powder is big, the problem such as preheating and agglomerates intensity difference.Correlational study shows, the additive such as boride adding low melting point in organic binder bond can increase slag key amount, promotes the oxidation of magnetic iron ore, thus improving acid pellet and agglomerates intensity.But, the Influencing Mechanism of blast furnace ironmaking is not yet verified by boride completely.
The present invention is with the macromolecule organic of low combustion residue for organic binding constituents, and calcium carbonate low with decomposition temperature, not silicon-aluminum containing is inorganic enhancement component, a kind of NEW TYPE OF COMPOSITE binding agent of synthesis.NEW TYPE OF COMPOSITE binding agent caking property is good, consumption is few for this；High-temperature roasting residual is few, and in pelletizing, effective Iron grade reduces hardly；The wet bulb produced, pre-hot-bulb and roasting ball intensity meet industrial index requirement；Adding useful flux component in pelletizing, metallurgical performance is good.
Summary of the invention
It is an object of the invention to provide a kind of iron ore pellets compound binding agent and preparation and application thereof, the compound binding agent adhesive property prepared is good, consumption is low, residual is few, and this compound binding agent is applied in iron ore pellets preparation, roasting ball intensity can be significantly improved, pellet Iron grade can be improved, improve ironmaking economic benefit.
The iron ore pellets compound binding agent of the present invention, composition includes starch ethers, cellulose ethers, guar gum class and calcium carbonate, wherein, the mass percent of each component is: starch ethers is 5～40%, cellulose ethers is 5～20%, and guar gum class is 5～20%, and calcium carbonate is 50～70%.
Wherein, described starch ethers is one or more mixture in hydroxypropyl starch, acetate starch, carboxymethyl starch or corn starch, and its particle diameter is respectively less than 100 orders；
Described cellulose ethers is one or both mixture in carboxymethyl cellulose, hydroxypropyl methyl cellulose, and its particle diameter is respectively less than 100 orders；
Described guar gum class is one or both mixture in cation guar gum, hydroxypropyl guar gum, and its particle diameter is respectively less than 100 orders；
Described calcium carbonate particle diameter is 0.02～1.0 micron.
The preparation method of the iron ore pellets compound binding agent of the present invention is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of the iron ore pellets compound binding agent of the present invention, (1) or (2) for following:
(1) by iron ore pellets compound binding agent, add in iron ore concentrate, mixing, pelletizing, roasting, obtain iron mine acid pellet；Wherein, in mass ratio, iron ore pellets compound binding agent: iron ore concentrate=0.60～1.20%；
(2) iron ore pellets compound binding agent is evenly spread in water, prepare uniformity slurry；Uniformity slurry is added in iron ore concentrate, mixing, pelletizing, roasting, obtain iron mine acid pellet；Wherein, in mass ratio, iron ore pellets compound binding agent: iron ore concentrate=0.60～1.20%；Iron ore pellets compound binding agent: water=(1: 5)～(1: 10).
The present invention is with the macromolecule organic of low combustion residue for organic binding constituents, and calcium carbonate low with decomposition temperature, not silicon-aluminum containing is inorganic enhancement component, a kind of NEW TYPE OF COMPOSITE binding agent of synthesis.Macromolecule organic viscosity in compound binding agent of the present invention is high, adhesive property is good, can guarantee that the wet bulb of iron ore pellets and dry bulb intensity；Carbonate Particle Size in compound binding agent of the present invention is little, specific surface area is big, meet water and with macromolecule organic effect after can increase the viscosity of macromolecule organic, can further improve the wet bulb of iron ore pellets and dry bulb intensity；High Temperature Dissociation of Calcium Carbonate temperature in compound binding agent of the present invention is low (about 600 DEG C), liquid phase can be fused under relatively low sintering temperature, promote iron ores particle contact close to each other, promote the oxidation of iron ores particle and the formation of crystallite key, finally improve pre-hot-bulb and the roasting ball intensity of iron ore pellets.
A kind of iron ore pellets compound binding agent and preparation and application thereof, compared with prior art, it has the beneficial effects that:
1. solve bentonite adhesive and reduce pellet TFe grade and the problem increasing ironmaking energy consumption.Compared with the iron ore pellets of 2% bentonite consumption, this compound binding agent can improve the pelletizing TFe grade of about 1.07%, and Ironmaking Coke Ratio reduces about 2% accordingly.
2. solve organic binder bond and reduce a difficult problem for preheating and roasting ball intensity, use pre-hot-bulb comprcssive strength prepared by the compound binding agent of the present invention more than 550N/, roasting ball comprcssive strength is more than 2600N/, meet demand of industrial production (pre-hot-bulb comprcssive strength 500N/, roasting ball comprcssive strength 2500N/).
3., when using compound binding agent of the present invention, due to calcium carbonate containing more content itself, the metallurgical performances such as blast furnace flux consumption, the reproducibility of raising pellet can be reduced；The compositions such as compound binding agent of the present invention not silicon-aluminum containing, and bentonitic silane agent need to add flux in blast furnace ironmaking and remove, and compares bentonite, the use of compound binding agent of the present invention can reduce flux consumption further.
4. compound binding agent adhesive property of the present invention is excellent, can water be both that carrier makes dispersibility solution, can also in Powdered addition iron ore concentrate.Additionally, binding agent of the present invention can with bentonite with the use of, reduce bentonite consumption.
5. use compound binding agent of the present invention, Taken For Saving Coke And Increasing Productivity In Blast Furnaces can be made, improve ironmaking economic benefit.
Detailed description of the invention
In following example, using method is all after compound binding agent is added iron ore concentrate, through mixing, pelletizing, obtains wet bulb；Dry at 105 DEG C, obtain dry bulb；Then, at 950 DEG C, preheat 20min, it is thus achieved that pre-hot-bulb；Finally, 1250 DEG C, roasting 20min obtain roasting ball；Respectively obtained each iron ore pellets is analyzed test.
The requirement of iron ore pellets intensity is by commercial production: wet bulb drop strength 4 times/0.5m, comprcssive strength 10N/, dry bulb comprcssive strength 22N/, pre-hot-bulb comprcssive strength 500N/, roasting ball comprcssive strength 2500N/.
Further describe the present invention by the following examples, it should be understood that these embodiments only for illustration purposes, are never limited in protection scope of the present invention.
Embodiment 1
Iron ore pellets compound binding agent, the mass percent of each component is: hydroxypropyl starch is 5%, and carboxymethyl cellulose is 5%, and hydroxypropyl guar gum is 20%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.02～0.08 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.6%.
In the present embodiment, the drop strength of the wet bulb of preparation is 16.9 times/0.5m, comprcssive strength is 18.7N/, the dry bulb comprcssive strength 56.2N/ obtained, obtaining pre-hot-bulb comprcssive strength is 557N/, obtaining roasting ball comprcssive strength is 2757N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.07%.
Embodiment 2
Iron ore pellets compound binding agent, the mass percent of each component is: corn starch is 20%, and hydroxypropyl methyl cellulose is 5%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.06～0.08 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: evenly spread in water by iron ore pellets compound binding agent, prepares uniformity slurry；Uniformity slurry is added in iron ore concentrate, wherein, in mass ratio, iron ore pellets compound binding agent: water=1: 5.Compound binding agent is added in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.8%.
In the present embodiment, the drop strength of the wet bulb of preparation is 8.3 times/0.5m, and comprcssive strength is 16.4N/, the dry bulb comprcssive strength 74.8N/ obtained, obtaining pre-hot-bulb comprcssive strength is 593N/, it is thus achieved that roasting ball comprcssive strength is 2880N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.04%.
Embodiment 3
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 20%, and carboxymethyl cellulose is 15%, and cation guar gum is 5%, and calcium carbonate is 60%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.9%.
In the present embodiment, the drop strength of the wet bulb of preparation is 17.8 times/0.5m, comprcssive strength is 18.3N/, the dry bulb comprcssive strength 165.4N/ obtained, obtaining pre-hot-bulb comprcssive strength is 649N/, obtaining roasting ball comprcssive strength is 3168N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.02%.
Embodiment 4
Iron ore pellets compound binding agent, the mass percent of each component is: corn starch is 40%, and carboxymethyl cellulose is 5%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 50%；Wherein, calcium carbonate particle diameter is 0.08～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 1.2%.
In the present embodiment, the drop strength of the wet bulb of preparation is 13.2 times/0.5m, comprcssive strength is 16.6N/, the dry bulb comprcssive strength 170.2N/ obtained, obtaining pre-hot-bulb comprcssive strength is 638N/, obtaining roasting ball comprcssive strength is 3241N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 0.96%.
Embodiment 5
Iron ore pellets compound binding agent, the mass percent of each component is: corn starch is 5%, and carboxymethyl cellulose is 20%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: evenly spread in water by iron ore pellets compound binding agent, prepares uniformity slurry；Uniformity slurry is added in iron ore concentrate, wherein, in mass ratio, iron ore pellets compound binding agent: water=1: 10.Compound binding agent is added in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.8%.
In the present embodiment, the drop strength of the wet bulb of preparation is 22.2 times/0.5m, comprcssive strength is 19.4N/, the dry bulb comprcssive strength 77.4N/ obtained, obtaining pre-hot-bulb comprcssive strength is 621N/, obtaining roasting ball comprcssive strength is 3179N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.03%.
Embodiment 6
Iron ore pellets compound binding agent, the mass percent of each component is: acetate starch is 5%, and carboxymethyl cellulose is 20%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.10～1.0 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 1.0%.
In the present embodiment, the drop strength of the wet bulb of preparation is 17.8 times/0.5m, comprcssive strength is 17.6N/, the dry bulb comprcssive strength 83.2N/ obtained, obtaining pre-hot-bulb comprcssive strength is 567N/, obtaining roasting ball comprcssive strength is 2893N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 0.95%.
Embodiment 7
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 5%, corn starch 15%, and carboxymethyl cellulose is 5%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.04～1.0 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.8%.
In the present embodiment, the drop strength of the wet bulb of preparation is 7.3 times/0.5m, and comprcssive strength is 15.3N/, the dry bulb comprcssive strength 53.8N/ obtained, obtaining pre-hot-bulb comprcssive strength is 571N/, it is thus achieved that roasting ball comprcssive strength is 2693N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.03%.
Embodiment 8
Iron ore pellets compound binding agent, the mass percent of each component is: corn starch is 5%, and carboxymethyl cellulose is 10%, hydroxypropyl methyl cellulose 10%, and hydroxypropyl guar gum is 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.8%.
In the present embodiment, the drop strength of the wet bulb of preparation is 20.3 times/0.5m, comprcssive strength is 18.4N/, the dry bulb comprcssive strength 103.2N/ obtained, obtaining pre-hot-bulb comprcssive strength is 619N/, obtaining roasting ball comprcssive strength is 3180N/, meets the commercial production requirement to iron ore pellets intensity.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 0.99%.
Embodiment 9
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 5%, and carboxymethyl cellulose is 5%, and hydroxypropyl guar gum is 10%, cation guar gum 10%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.7%.
In the present embodiment, the drop strength of the wet bulb of preparation is 15.1 times/0.5m, and comprcssive strength is 15.5N/, the dry bulb comprcssive strength 72.6N/ obtained, obtaining pre-hot-bulb comprcssive strength is 598N/, it is thus achieved that roasting ball comprcssive strength is 2909N/, meets the commercial production requirement to pellet strength.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.04%.
Embodiment 10
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 5%, and carboxymethyl cellulose is 5%, hydroxypropyl methyl cellulose 5%, and hydroxypropyl guar gum is 5%, cation guar gum 10%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.08～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: evenly spread in water by iron ore pellets compound binding agent, prepares uniformity slurry；Uniformity slurry is added in iron ore concentrate, wherein, in mass ratio, iron ore pellets compound binding agent: water=1: 8.Compound binding agent is added in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.6%.
In the present embodiment, the drop strength of the wet bulb of preparation is 9.4 times/0.5m, and comprcssive strength is 14.5N/, the dry bulb comprcssive strength 76.9N/ obtained, obtaining pre-hot-bulb comprcssive strength is 583N/, it is thus achieved that roasting ball comprcssive strength is 2741N/, meets the commercial production requirement to pellet strength.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.05%.
Embodiment 11
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 5%, hydroxypropyl starch 5%, corn starch 5%, and carboxymethyl cellulose is 5%, and hydroxypropyl guar gum is 5%, cation guar gum 5%, and calcium carbonate is 70%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.7%.
In the present embodiment, the drop strength of the wet bulb of preparation is 13.4 times/0.5m, and comprcssive strength is 15.8N/, the dry bulb comprcssive strength 61.9N/ obtained, obtaining pre-hot-bulb comprcssive strength is 607N/, it is thus achieved that roasting ball comprcssive strength is 2916N/, meets the commercial production requirement to pellet strength.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.03%.
Embodiment 12
Iron ore pellets compound binding agent, the mass percent of each component is: carboxymethyl starch is 5%, hydroxypropyl starch 5%, acetate starch 5%, corn starch 5%, carboxymethyl cellulose is 2%, hydroxypropyl methyl cellulose 3%, hydroxypropyl guar gum is 5%, cation guar gum 5%, and calcium carbonate is 65%；Wherein, calcium carbonate particle diameter is 0.06～0.10 micron, and other raw material particle sizes are respectively less than 100 orders.
The preparation method of iron ore pellets compound binding agent is: iron ore pellets compound binding agent raw material, after weighing by proportioning, and mix homogeneously, obtain iron ore pellets compound binding agent.
The using method of iron ore pellets compound binding agent is: added by compound binding agent in iron ore concentrate, mixing, pelletizing, roasting.Wherein, compound binding agent consumption accounts for Iron Concentrate Quality percent is 0.8%.
In the present embodiment, the drop strength of the wet bulb of preparation is 13.9 times/0.5m, and comprcssive strength is 16.6N/, the dry bulb comprcssive strength 84.2N/ obtained, obtaining pre-hot-bulb comprcssive strength is 604N/, it is thus achieved that roasting ball comprcssive strength is 3123N/, meets the commercial production requirement to pellet strength.Compared with the iron ore pellets of 2% bentonite consumption, the pelletizing TFe grade that the present embodiment binding agent produces improves 1.01%.
Claims (6)
1. an iron ore pellets compound binding agent, it is characterized in that, composition includes starch ethers, cellulose ethers, guar gum class and calcium carbonate, wherein, the mass percent of each component is: starch ethers is 5～40%, cellulose ethers is 5～20%, and guar gum class is 5～20%, and calcium carbonate is 50～70%；Wherein, calcium carbonate particle diameter is 0.02～1.0 micron, and other raw material particle sizes are respectively less than 100 orders.
2. iron ore pellets compound binding agent as claimed in claim 1, it is characterised in that described starch ethers is one or more mixture in hydroxypropyl starch, acetate starch, carboxymethyl starch or corn starch.
3. iron ore pellets compound binding agent as claimed in claim 1, it is characterised in that described cellulose ethers is one or both mixture in carboxymethyl cellulose, hydroxypropyl methyl cellulose.
4. iron ore pellets compound binding agent as claimed in claim 1, it is characterised in that described guar gum class is one or both mixture in cation guar gum, hydroxypropyl guar gum.
5. the preparation method of the iron ore pellets compound binding agent of claim 1, it is characterised in that iron ore pellets compound binding agent raw material, after weighing by proportioning, mix homogeneously, obtain iron ore pellets compound binding agent.
6. the using method of the iron ore pellets compound binding agent of claim 1, it is characterised in that method is following (1) or (2):
(1) by iron ore pellets compound binding agent, add in iron ore concentrate, mixing, pelletizing, roasting, obtain iron mine acid pellet；Wherein, in mass ratio, iron ore pellets compound binding agent: iron ore concentrate=0.60～1.20%；
(2) iron ore pellets compound binding agent is evenly spread in water, prepare uniformity slurry；Uniformity slurry is added in iron ore concentrate, mixing, pelletizing, roasting, obtain iron mine acid pellet；Wherein, in mass ratio, iron ore pellets compound binding agent: iron ore concentrate=0.60～1.20%；Iron ore pellets compound binding agent: water=(1:5)～(1:10).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136450A (en) * | 2018-10-23 | 2019-01-04 | 攀钢集团攀枝花钢铁研究院有限公司 | The preparation method of binder and preparation method thereof and vanadium-raising cooling agent |
| CN109706314A (en) * | 2019-01-12 | 2019-05-03 | 王金华 | A kind of residual explosion-proof metallurgical briquetting binder of low fever |
| CN110592374A (en) * | 2019-10-21 | 2019-12-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Converter slag melting agent pellet and binder for forming same |
| CN112143885A (en) * | 2020-09-21 | 2020-12-29 | 西安建筑科技大学 | Composite additive for iron ore pellets and iron ore pellets |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015542A (en) * | 2008-02-08 | 2011-04-13 | 维尔英科有限公司 | Process for manufacturing prefluxed metal oxide from metal hydroxide and metal carbonate precursors |
| CN102282108A (en) * | 2008-04-16 | 2011-12-14 | 瓦勒股份有限公司 | Process for production of nickel and cobalt using metal hydroxide, metal oxide and/or metal carbonate |
| CN102363838A (en) * | 2011-06-01 | 2012-02-29 | 刘贵堂 | Limestone cellulose ether iron ore pellet composite additive, and preparation method and application thereof |
| CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent and application thereof |
-
2016
- 2016-04-11 CN CN201610224364.7A patent/CN105755280B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015542A (en) * | 2008-02-08 | 2011-04-13 | 维尔英科有限公司 | Process for manufacturing prefluxed metal oxide from metal hydroxide and metal carbonate precursors |
| CN102282108A (en) * | 2008-04-16 | 2011-12-14 | 瓦勒股份有限公司 | Process for production of nickel and cobalt using metal hydroxide, metal oxide and/or metal carbonate |
| CN102363838A (en) * | 2011-06-01 | 2012-02-29 | 刘贵堂 | Limestone cellulose ether iron ore pellet composite additive, and preparation method and application thereof |
| CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| 姜涛主编: "《烧结球团生产技术手册》", 30 June 2014, 冶金工业出版社 * |
| 张雄等主编: "《建筑功能砂浆》", 30 April 2006, 化学工业出版社 * |
| 袁继祖编著: "《非金属矿物填料与加工技术》", 30 September 2006, 化学工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136450A (en) * | 2018-10-23 | 2019-01-04 | 攀钢集团攀枝花钢铁研究院有限公司 | The preparation method of binder and preparation method thereof and vanadium-raising cooling agent |
| CN109706314A (en) * | 2019-01-12 | 2019-05-03 | 王金华 | A kind of residual explosion-proof metallurgical briquetting binder of low fever |
| CN110592374A (en) * | 2019-10-21 | 2019-12-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Converter slag melting agent pellet and binder for forming same |
| CN110592374B (en) * | 2019-10-21 | 2021-05-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Converter slag melting agent pellet and binder for forming same |
| CN112143885A (en) * | 2020-09-21 | 2020-12-29 | 西安建筑科技大学 | Composite additive for iron ore pellets and iron ore pellets |
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| CN105755280B (en) | 2018-02-16 |
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