CN108149010A - Low burn consumption pelletizing binder and preparation method thereof - Google Patents
Low burn consumption pelletizing binder and preparation method thereof Download PDFInfo
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- CN108149010A CN108149010A CN201711139796.9A CN201711139796A CN108149010A CN 108149010 A CN108149010 A CN 108149010A CN 201711139796 A CN201711139796 A CN 201711139796A CN 108149010 A CN108149010 A CN 108149010A
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- sodium
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- low burn
- pelletizing
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- 239000011230 binding agent Substances 0.000 title claims abstract description 34
- 238000005453 pelletization Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000440 bentonite Substances 0.000 claims abstract description 39
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 39
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 39
- 150000001875 compounds Chemical class 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000006079 antiknock agent Substances 0.000 claims abstract description 18
- 229920002521 macromolecule Polymers 0.000 claims abstract description 12
- 229920002472 Starch Polymers 0.000 claims abstract description 11
- 239000001913 cellulose Substances 0.000 claims abstract description 11
- 229920002678 cellulose Polymers 0.000 claims abstract description 11
- 239000008107 starch Substances 0.000 claims abstract description 11
- 235000019698 starch Nutrition 0.000 claims abstract description 11
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 22
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 20
- 239000004576 sand Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 17
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 15
- 229910052708 sodium Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 11
- 239000000661 sodium alginate Substances 0.000 claims description 11
- 235000010413 sodium alginate Nutrition 0.000 claims description 11
- 229940005550 sodium alginate Drugs 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 11
- 210000002966 serum Anatomy 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 239000002006 petroleum coke Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 208000011580 syndromic disease Diseases 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- HJTXREGDFOGOEH-UHFFFAOYSA-M azanium dimethyl(dioctadecyl)azanium dichloride Chemical compound [NH4+].[Cl-].[Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCCCC HJTXREGDFOGOEH-UHFFFAOYSA-M 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical group Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 229920002261 Corn starch Polymers 0.000 claims description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 239000008120 corn starch Substances 0.000 claims description 2
- 229940099112 cornstarch Drugs 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 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 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 229920001592 potato starch Polymers 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims 2
- 229910017343 Fe2 (SO4)3 Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 230000008719 thickening Effects 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 abstract description 23
- 239000008188 pellet Substances 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 11
- 238000007906 compression Methods 0.000 abstract description 11
- 241001417490 Sillaginidae Species 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 8
- 239000011575 calcium Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- RNYJXPUAFDFIQJ-UHFFFAOYSA-N hydron;octadecan-1-amine;chloride Chemical class [Cl-].CCCCCCCCCCCCCCCCCC[NH3+] RNYJXPUAFDFIQJ-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052901 montmorillonite Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229940126214 compound 3 Drugs 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- OGQYPPBGSLZBEG-UHFFFAOYSA-N dimethyl(dioctadecyl)azanium Chemical compound CCCCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCCCC OGQYPPBGSLZBEG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 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
Landscapes
- 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 present invention discloses a kind of low burn consumption pelletizing binder and preparation method thereof, is mixed by sodium-ionized bentonite, modified anti-knock agent, compound carbonaceous reducing agent, native starch, cellulose family macromolecule, thickener.Compared with prior art, low burn consumption pelletizing binder science selection each component provided by the invention, rational proportion forms, and improves pellet quality, improves cracking temperature of green pel let, it reduces blast furnace ironmaking and smelts burnup, make to return mine and significantly reduce, improve rate of reduction, refining coke-iron-rate is greatly reduced, output increased, pelletizing crushing strength are big；The compression strength of ball and finished pellet is not only increased, the full Iron grade of finished ball nodulizing improves more than 1.5%, the economic benefit with apparent energy-saving and production-increase.
Description
Technical field
The present invention relates to the bright more particularly to a kind of low burns in the preconditioning technique field for being related to Iron Ore Powder, iron dust containing and sludge
Consume pelletizing binder and preparation method thereof.
Background technology
China Steel yield keeps rapid growth for years, becomes world steel big country.Incident environmental protection is asked
Topic also becomes increasingly conspicuous, and the pollution of trade waste produced by Iron and Steel Enterprises in China influences location periphery increasingly severely
Environment, and start restrict enterprise itself development.Therefore, it eliminates trade waste pollution, realize clean manufacturing, particularly place
The trade wastes such as the various dust that reason production each process generates are the weights that China's steel and iron industry keeps sustainable and healthy development from now on
Want index.
Steel-making dust, which is freezed off, to form enters back into after type rotary kiln sintered, realizes resource recycling, both reduces environment
Pollution, reduces energy consumption, and it is the various dust that will be generated in steel manufacture process to freeze off knot moulding process, and it is appropriate to add
Adhesive after mixing, under a certain pressure, makes mixing material by the bulk for pressing to definite shape, size, density and intensity
Material consolidates using corresponding low temperature drying (300 DEG C of ＜), makes the agglomerate with higher-strength.The agglomerate can be with
The cooling agent of raw material and converter smelting as blast furnace process, the raw material for being also used as direct-reduction and melting and reducing use.
The defects of prior art：It freezes off at present and forms the adhesive that type mainly uses and be divided into bentonite and organic bond,
The application of bentonite adhesive is ripe, and price is relatively low, but it burns residual rate height, seriously reduces pellet ferrous grade, increases height
The quantity of slag that stove ironmaking is smelted, declines blast furnace coefficient, and burnup rises；Organic bond adhesive effect is good, and dosage is few, but its price
Height, using upper immature, it is anti-that fatal defects are that organic binder bond can be aoxidized during the preheating and baking that heats up, be decomposed etc.
Should, the thermal stress of generation can destroy preheating spherical structure, cause preheated ball very low, while also bring environmental issue.
Invention content
For solution more than technical problem, the present invention provides low burn consumption pelletizing binder and preparation method thereof, to solve tradition
Bentonite adhesive burns residual rate height, reduces pellet Iron grade, increases blast furnace ironmaking and smelts burnup and be difficult in adapt to iron ore original
The problems such as requirement of material moisture and balling-up moisture.
The technical solution adopted by the present invention is as follows：A kind of low burn consumes pelletizing binder, and key is by following mass fraction
Raw material composition：55-65 parts of sodium-ionized bentonite, modified 1-5 parts of anti-knock agent, carbonaceous reducing agent 3-7 parts compound, native starch 6-15
Part, 10-20 parts of cellulose family macromolecule, 5-8 parts of thickener.
Preferably, the mass fraction of the raw material is：60 parts of sodium-ionized bentonite, modified 4 parts of anti-knock agent, compound carbonaceous reducing agent
6 parts, 12 parts of native starch, 15 parts of cellulose family macromolecule, 7 parts of thickener.
Preferably, the sodium-ionized bentonite is obtained using following methods：Sodium alginate and sodium carbonate are dissolved in water, stirred
After mixing uniformly, compound sodium modified solution is obtained；Then the compound sodium modified solution is added to the natural calcium base after grinding swollen
In profit soil, mixed serum is obtained after mixing；Dimethyldioctadecylammonium ammonium chloride is added in the mixed serum of gained, is adjusted
PH value is saved after 5-7, to be warming up to 70-100 DEG C, at this temperature, add in vinyl alcohol while stirring, is stirred to react 2-4 hours, instead
It by reaction product successively drying, crushing and should grind after the completion to get the sodium-ionized bentonite；Wherein, sodium alginate, sodium carbonate
Mass ratio with calcium-base bentonite is 3~25：1~8：100.
Preferably, the calcium-base bentonite grind size is less than 0.5mm.
Preferably, the modified anti-knock agent is obtained using following methods：It is 10-18 by mass ratio：50 polyacrylamide
Reaction kettle is put into, and add in conditioning agent with magnesium iron sand, the mass ratio of the conditioning agent and magnesium iron sand is 0.5:100, at normal temperatures
Stirring, grinds altogether after mixing, obtains the modified magnesium iron sand, and granularity is -0.065mm grade mass fraction >=80%.
Preferably, MgO and Fe in the magnesium iron sand2O3Mass fraction be respectively a and b, a >=85%wt, 8%wt >=b >=
12%wt；The conditioning agent is FeCl3、MgCl2Or Fe2(SO4)3In one kind.
Preferably, the compound carbonaceous reducing agent is obtained using following methods：It is 50~60 by mass ratio：40~50 oil
Burnt and low culm is uniformly mixed to obtain mixed material；Then it will be sequentially added in mixed material and be equivalent to mixed material quality 2%
The waterglass of wt~4%wt and the water for being equivalent to mixed material quality 8%wt~12%wt are uniformly mixed, at 50~60 DEG C
Stir 2h, discharging；30~50min is dried under the conditions of being again 100~140 DEG C in wind-warm syndrome, the composite carbonaceous reducing agent is prepared.
Preferably, it is respectively 85~90%wt, 55~65%wt carbon content to be fixed in the petroleum coke, low culm.
Preferably, the cellulose family macromolecule is in methylcellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose
One or two；The native starch is cornstarch, potato starch；The thickener is over cure acid, peroxidating
Hydrogen.
A kind of preparation method of low burn consumption pelletizing binder, key are to carry out according to the following steps：
Step 1: sodium-ionized bentonite, modified anti-knock agent and compound carbonaceous reducing agent are prepared respectively；
Step 2: the sodium-ionized bentonite obtained in step 1, cellulose family macromolecule, thickener and modified anti-knock agent are added
Enter into reaction kettle, be heated to 60~90 DEG C, reaction is mixed, control 300~600r/min of mixing speed, react 30min
The mass ratio of sampling plus water progress viscosimetric analysis afterwards, sample and water is 1:1, after its viscosity reaches 5000cp, discharging is mixed
Close object A；
Step 3: compound carbonaceous reducing agent, native starch are uniformly mixed to obtain mixture B；
Step 4: the mixture B obtained in the mixture A and step 3 that are obtained in step 2 is added in blender simultaneously
After mixing, it puts into and the powder that average grain diameter is 42-74um is ground into grinder, obtain finished product.
Compared with prior art, low burn provided by the invention consumption pelletizing binder science selection each component, rational proportion and
Into the advantageous effect with the following aspects：
1st, improve pellet quality, improve green ball strength and burst temperature, improve pelletizing crushing strength and full Iron grade.Calcium
Base bentonite is modified jointly by sodium alginate, sodium carbonate and dimethyldioctadecylammonium ammonium chloride, and three is to calcium
Synergistic function is generated in base bentonite modifying process.Na+It can enter and replace part Ca in ca-montmorillonite crystal layer2+, two
The double octadecyl ammonium chlorides of methyl will cover the support of flake interlamellar spacing greatly, may advantageously facilitate further being smoothed out for sodium modification；It is special
It is not to be chemically bonded between dimethyldioctadecylammonium ammonium chloride and the functional group of alginic acid, in montmorillonite lamella and outside
All form organic organic modification for being connected, being conducive to calcium-base bentonite；Pellet can be improved by introducing modified anti-knock agent
High temperature metallurgical properties, green ball strength and burst temperature reduce the reduction swellability rate of pellet；Introducing compound carbonaceous reducing agent can carry
Refining coke-iron-rate is greatly reduced in high rate of reduction.
2nd, low burn of the invention consumption pelletizing binder is added directly into as a kind of starchy binder in iron ore raw material, is bonded
Agent energy sticking large quantity of moisture, thus the suitable upper limit of the binding agent to iron ore raw material moisture is improved, it is thrown so as to reduce drying equipment
Provide cost and drying process energy consumption.
3rd, the low burn consumption pelletizing binder dosage that prepared by the present invention is accounted in the range of iron ore butt quality 0.3~0.8%, green-ball
Free-electron model intensity for 8~12 times/1m, burst temperature is more than 650 DEG C, and preheated pellets compression strength is more than 450N/ or more,
Agglomerates compression strength reaches 2500N/ or more, and the full Iron grade of finished ball nodulizing can improve more than 1.5%.
Specific embodiment
For those skilled in the art is made to be better understood from technical scheme of the present invention, with reference to subordinate list and specific embodiment party
Formula elaborates to the present invention.
Embodiment 1：A kind of low burn consumes pelletizing binder
By low burn consume pelletizing binder in each raw material the mass fraction as described in table 1 mixes respectively, obtain 3 groups of differences and mix
Low burn consumption pelletizing binder I~III of composition and division in a proportion example.
The low burn consumption pelletizing binder of 1 different mixing proportion of table (mass fraction)
Embodiment 2：Low burn consumes the preparation of pelletizing binder
Step 1: the preparation of sodium-ionized bentonite：Sodium alginate and sodium carbonate are dissolved in water, after stirring evenly, obtained
Compound sodium modified solution；Then the compound sodium modified solution is added in the natural calcium-base bentonite after grinding, the calcium
Base bentonite grind size is less than 0.5mm, obtains mixed serum after mixing；Dimethyl is added in the mixed serum of gained
Double octadecyl ammonium chlorides adjust pH value after 5-7, to be warming up to 70-100 DEG C, at this temperature, adding in ethylene while stirring
Alcohol is stirred to react 2-4 hours, by reaction product successively drying, crushing and grinding to get the sodium swelling after the completion of reaction
Soil；Wherein, the mass ratio of sodium alginate, sodium carbonate and calcium-base bentonite is 3：1：100.
The preparation of modified anti-knock agent：It is 10 by mass ratio：50 polyacrylamide and magnesium iron sand input reaction kettle, and add in
FeCl3, FeCl3Mass ratio with magnesium iron sand is 0.5:100, it stirs, grinds altogether after mixing at normal temperatures, obtain the modification
Magnesium iron sand, granularity are -0.065mm grade mass fraction >=80%；MgO and Fe in the magnesium iron sand2O3Mass fraction difference
For a and b, a >=85%wt, 8%wt >=b >=12%wt.
The preparation of compound carbonaceous reducing agent：It is 50 by mass ratio：40 petroleum coke and low culm are uniformly mixed to obtain mixture
Expect, it is respectively 85~90%wt, 55~65%wt to fix carbon content in the petroleum coke and low culm；It then will be in mixed material
It sequentially adds the waterglass for being equivalent to mixed material quality 2%wt~4%wt and is equivalent to mixed material quality 8%wt~12%
The water of wt is uniformly mixed, and is discharged after stirring 2h at 50~60 DEG C；Again wind-warm syndrome for dry 30 under the conditions of 100~140 DEG C~
The composite carbonaceous reducing agent is prepared in 50min.
Step 2: by 5 parts of 10 parts of 55 parts of sodium-ionized bentonite, cellulose family macromolecule, thickener being obtained in step 1 and
Modified 1 part of anti-knock agent is added in reaction kettle, is heated to 60~90 DEG C, is mixed and is reacted, and control mixing speed 300~
The mass ratio of sampling plus water progress viscosimetric analysis after 600r/min, reaction 30min, sample and water is 1:1, when its viscosity reaches
After 5000cp, discharging obtains mixture A；
Step 3: compound 3 parts of carbonaceous reducing agent, 6 parts of native starch are uniformly mixed and obtain mixture B；
Step 4: the mixture B obtained in the mixture A and step 3 that are obtained in step 2 is added in blender simultaneously
After mixing, it puts into and the powder that average grain diameter is 42-74um is ground into grinder, obtain low burn consumption pelletizing binder I.
The performance test results：Ratio according to iron ore concentrate butt quality 0.2% is accounted for is added in iron ore concentrate and is made after mixing
Ball.The shatter strength of green pellet obtained is 8 times/1m, and burst temperature is 650 DEG C, and pre- hot-bulb compression strength is 455N/, roasting
Ball compression strength is 2532N/, and the full Iron grade TFe of finished ball is 68.39%.
Embodiment 3：Low burn consumes the preparation of pelletizing binder
Step 1: the preparation of sodium-ionized bentonite：Sodium alginate and sodium carbonate are dissolved in water, after stirring evenly, obtained
Compound sodium modified solution；Then the compound sodium modified solution is added in the natural calcium-base bentonite after grinding, the calcium
Base bentonite grind size is less than 0.5mm, obtains mixed serum after mixing；Dimethyl is added in the mixed serum of gained
Double octadecyl ammonium chlorides adjust pH value after 5-7, to be warming up to 70-100 DEG C, at this temperature, adding in ethylene while stirring
Alcohol is stirred to react 2-4 hours, by reaction product successively drying, crushing and grinding to get the sodium swelling after the completion of reaction
Soil；Wherein, the mass ratio of sodium alginate, sodium carbonate and calcium-base bentonite is 25：8：100.
The preparation of modified anti-knock agent：It is 18 by mass ratio：50 polyacrylamide and magnesium iron sand input reaction kettle, and add in
MgCl2, MgCl2Mass ratio with magnesium iron sand is 0.5:100, it stirs, grinds altogether after mixing at normal temperatures, obtain the modification
Magnesium iron sand, granularity are -0.065mm grade mass fraction >=80%；MgO and Fe in the magnesium iron sand2O3Mass fraction difference
For a and b, a >=85%wt, 8%wt >=b >=12%wt.
The preparation of compound carbonaceous reducing agent：It is 60 by mass ratio：50 petroleum coke and low culm are uniformly mixed to obtain mixture
Expect, it is respectively 85~90%wt, 55~65%wt to fix carbon content in the petroleum coke and low culm；It then will be in mixed material
It sequentially adds the waterglass for being equivalent to mixed material quality 2%wt~4%wt and is equivalent to mixed material quality 8%wt~12%
The water of wt is uniformly mixed, and is discharged after stirring 2h at 50~60 DEG C；Again wind-warm syndrome for dry 30 under the conditions of 100~140 DEG C~
The composite carbonaceous reducing agent is prepared in 50min.
Step 2: by 8 parts of 20 parts of 65 parts of sodium-ionized bentonite, cellulose family macromolecule, thickener being obtained in step 1 and
Modified 5 parts of anti-knock agent is added in reaction kettle, is heated to 60~90 DEG C, is mixed and is reacted, and control mixing speed 300~
The mass ratio of sampling plus water progress viscosimetric analysis after 600r/min, reaction 30min, sample and water is 1:1, when its viscosity reaches
After 5000cp, discharging obtains mixture A；
Step 3: compound 7 parts of carbonaceous reducing agent, 15 parts of native starch are uniformly mixed and obtain mixture B；
Step 4: the mixture B obtained in the mixture A and step 3 that are obtained in step 2 is added in blender simultaneously
After mixing, it puts into and the powder that average grain diameter is 42-74um is ground into grinder, obtain low burn consumption pelletizing binder II.
The performance test results：Ratio according to iron ore concentrate butt quality 0.3% is accounted for is added in iron ore concentrate and is made after mixing
Ball.The shatter strength of green pellet obtained is 9.8 times/1m, and burst temperature is 720 DEG C, and pre- hot-bulb compression strength is 468N/, roasting
It is 2583N/ to burn ball compression strength, and the full Iron grade TFe of finished ball is 67.83%.
Embodiment 4：Low burn consumes the preparation of pelletizing binder
Step 1: the preparation of sodium-ionized bentonite：Sodium alginate and sodium carbonate are dissolved in water, after stirring evenly, obtained
Compound sodium modified solution；Then the compound sodium modified solution is added in the natural calcium-base bentonite after grinding, the calcium
Base bentonite grind size is less than 0.5mm, obtains mixed serum after mixing；Dimethyl is added in the mixed serum of gained
Double octadecyl ammonium chlorides adjust pH value after 5-7, to be warming up to 70-100 DEG C, at this temperature, adding in ethylene while stirring
Alcohol is stirred to react 2-4 hours, by reaction product successively drying, crushing and grinding to get the sodium swelling after the completion of reaction
Soil；Wherein, the mass ratio of sodium alginate, sodium carbonate and calcium-base bentonite is 20：5：100.
The preparation of modified anti-knock agent：It is 15 by mass ratio：50 polyacrylamide and magnesium iron sand input reaction kettle, and add in
Fe2(SO4)3, Fe2(SO4)3Mass ratio with magnesium iron sand is 0.5:100, it stirs, grinds altogether after mixing at normal temperatures, obtain institute
Modified magnesium iron sand is stated, granularity is -0.065mm grade mass fraction >=80%；MgO and Fe in the magnesium iron sand2O3Quality point
Number is respectively a and b, a >=85%wt, 8%wt >=b >=12%wt.
The preparation of compound carbonaceous reducing agent：It is 55 by mass ratio：45 petroleum coke and low culm are uniformly mixed to obtain mixture
Expect, it is respectively 85~90%wt, 55~65%wt to fix carbon content in the petroleum coke and low culm；It then will be in mixed material
It sequentially adds the waterglass for being equivalent to mixed material quality 2%wt~4%wt and is equivalent to mixed material quality 8%wt~12%
The water of wt is uniformly mixed, and is discharged after stirring 2h at 50~60 DEG C；Again wind-warm syndrome for dry 30 under the conditions of 100~140 DEG C~
The composite carbonaceous reducing agent is prepared in 50min.
Step 2: by 7 parts of 15 parts of 60 parts of sodium-ionized bentonite, cellulose family macromolecule, thickener being obtained in step 1 and
Modified 4 parts of anti-knock agent is added in reaction kettle, is heated to 60~90 DEG C, is mixed and is reacted, and control mixing speed 300~
The mass ratio of sampling plus water progress viscosimetric analysis after 600r/min, reaction 30min, sample and water is 1:1, when its viscosity reaches
After 5000cp, discharging obtains mixture A；
Step 3: compound 6 parts of carbonaceous reducing agent, 12 parts of native starch are uniformly mixed and obtain mixture B；
Step 4: the mixture B obtained in the mixture A and step 3 that are obtained in step 2 is added in blender simultaneously
After mixing, it puts into and the powder that average grain diameter is 42-74um is ground into grinder, obtain low burn consumption pelletizing binder III.
The performance test results：Ratio according to iron ore concentrate butt quality 0.3% is accounted for is added in iron ore concentrate and is made after mixing
Ball.The shatter strength of green pellet obtained is 11.6 times/1m, and burst temperature is 710 DEG C, and pre- hot-bulb compression strength is 495N/, roasting
It is 2578N/ to burn ball compression strength, and the full Iron grade TFe of finished ball is 68.57%.
Embodiment 5：Comparative example
Natural montmorillonite is added to mixing in iron ore concentrate according to the mass ratio for accounting for iron ore concentrate butt quality 2.5%, is passed through
Pelletizing after profit mill pretreatment, gained shatter strength of green pellet are 5.3 times/1m, and burst temperature is 618 DEG C, and pre- hot-bulb compression strength is
410N/, roasting ball compression strength is 2535N/, and the full Iron grade TFe of finished ball agglomerate is 66.76%.
Finally it is to be appreciated that foregoing description is merely a preferred embodiment of the present invention, those skilled in the art is in the present invention
Enlightenment under, under the premise of without prejudice to present inventive concept and claim, expression, such change as multiple types can be made
It changes and each falls within protection scope of the present invention.
Claims (10)
1. a kind of low burn consumes pelletizing binder, it is characterised in that is made of the raw material of following mass fraction：Sodium-ionized bentonite 55-65
Part, carbonaceous reducing agent 3-7 parts compound, 6-15 parts of native starch, 10-20 parts of cellulose family macromolecule, increases modified 1-5 parts of anti-knock agent
Thick dose 5-8 parts.
2. low burn according to claim 1 consumes pelletizing binder, it is characterised in that the mass fraction of the raw material is：Sodium
60 parts of bentonite, modified 4 parts of anti-knock agent, 6 parts of compound carbonaceous reducing agent, 12 parts of native starch, 15 parts of cellulose family macromolecule, thickening
7 parts of agent.
3. low burn according to claim 1 or 2 consumes pelletizing binder, it is characterised in that the sodium-ionized bentonite is using following
Method obtains：Sodium alginate and sodium carbonate are dissolved in water, after stirring evenly, obtain compound sodium modified solution；Then by institute
It states in the natural calcium-base bentonite after compound sodium modified solution is added to grinding, obtains mixed serum after mixing；In gained
Mixed serum in add in dimethyldioctadecylammonium ammonium chloride, adjust pH value after 5-7, to be warming up to 70-100 DEG C, it is warm herein
Under degree, vinyl alcohol is added in while stirring, is stirred to react 2-4 hours, and reaction product is dried, crushed and ground successively after the completion of reaction
Mill is to get the sodium-ionized bentonite；Wherein, the mass ratio of sodium alginate, sodium carbonate and calcium-base bentonite is 3~25：1~8：
100。
4. low burn according to claim 3 consumes pelletizing binder, it is characterised in that：The calcium-base bentonite grind size is small
In 0.5mm.
5. low burn according to claim 1 or 2 consumes pelletizing binder, it is characterised in that the modified anti-knock agent is using following
Method obtains：It is 10-18 by mass ratio：50 polyacrylamide and magnesium iron sand input reaction kettle, and conditioning agent is added in, the tune
The mass ratio for saving agent and magnesium iron sand is 0.5:100, it stirs, grinds altogether after mixing at normal temperatures, obtain the modified magnesium iron sand,
Its granularity is -0.065mm grade mass fraction >=80%.
6. low burn according to claim 5 consumes pelletizing binder, it is characterised in that：MgO and Fe in the magnesium iron sand2O3's
Mass fraction is respectively a and b, a >=85%wt, 8%wt >=b >=12%wt；The conditioning agent is FeCl3、MgCl2Or Fe2
(SO4)3In one kind.
7. low burn according to claim 1 or 2 consumes pelletizing binder, it is characterised in that：The compound carbonaceous reducing agent uses
Following methods obtain：It is 50~60 by mass ratio：40~50 petroleum coke and low culm are uniformly mixed to obtain mixed material；Then
The waterglass for being equivalent to mixed material quality 2%wt~4%wt will be sequentially added in mixed material and is equivalent to mixed material matter
The water of 8%wt~12%wt is measured, is uniformly mixed, 2h, discharging are stirred at 50~60 DEG C；It is again 100~140 DEG C of conditions in wind-warm syndrome
30~50min of lower baking, is prepared the composite carbonaceous reducing agent.
8. low burn according to claim 7 consumes pelletizing binder, it is characterised in that：It is fixed in the petroleum coke, low culm
Carbon content is respectively 85~90%wt, 55~65%wt.
9. pelletizing binder is consumed according to claim 1,2,4,6 or 8 any one of them low burns, it is characterised in that：The fiber
Plain family macromolecule is one or both of methylcellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose；The natural shallow lake
Powder is cornstarch, potato starch；The thickener is over cure acid, hydrogen peroxide.
10. a kind of preparation method for preparing claim 1-9 any one of them low burn consumption pelletizing binder, it is characterised in that press
Following steps carry out：
Step 1: sodium-ionized bentonite, modified anti-knock agent and compound carbonaceous reducing agent are prepared respectively；
Step 2: the sodium-ionized bentonite obtained in step 1, cellulose family macromolecule, thickener and modified anti-knock agent are added to
In reaction kettle, 60~90 DEG C are heated to, reaction is mixed, controls 300~600r/min of mixing speed, is taken after reacting 30min
Sample adds water to carry out viscosimetric analysis, and the mass ratio of sample and water is 1:1, after its viscosity reaches 5000cp, discharging obtains mixture
A；
Step 3: compound carbonaceous reducing agent, native starch are uniformly mixed to obtain mixture B；
Step 4: the mixture B obtained in the mixture A and step 3 that are obtained in step 2 is added into stirrer for mixing simultaneously
After uniformly, the powder for being ground into that average grain diameter is 42-74um is put into grinder, obtains finished product.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823403A (en) * | 2018-08-21 | 2018-11-16 | 成渝钒钛科技有限公司 | A kind of iron sheet ball bonding agent, iron sheet ball and preparation method thereof |
| CN109403144A (en) * | 2018-10-26 | 2019-03-01 | 杭州特种纸业有限公司 | A kind of preparation method of antibacterial machine air filter paper |
| CN109505197A (en) * | 2018-10-30 | 2019-03-22 | 杭州特种纸业有限公司 | A kind of preparation method of pressure resistance filter paper for oil |
| CN109706314A (en) * | 2019-01-12 | 2019-05-03 | 王金华 | A kind of residual explosion-proof metallurgical briquetting binder of low fever |
| CN111020182A (en) * | 2019-12-24 | 2020-04-17 | 兰州申马节能环保科技有限公司 | Composite metallurgical pellet binder, cold-pressed pellet containing same and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5306327A (en) * | 1990-09-26 | 1994-04-26 | Oriox Technologies, Inc. | Modified native starch base binder for pelletizing mineral material |
| CN104342552A (en) * | 2014-11-28 | 2015-02-11 | 任瑞刚 | Composite adhesive for metallurgical pellet and production method thereof |
| CN104651607A (en) * | 2015-02-05 | 2015-05-27 | 海城市托田炉料有限公司 | Magnesium-iron-based organic adhesive for iron-making pellet |
| CN105018170A (en) * | 2015-07-05 | 2015-11-04 | 田东昊润新材料科技有限公司 | Highly-efficient composite briquette binder |
| CN105219956A (en) * | 2015-10-30 | 2016-01-06 | 兰州大学 | A kind of preparation method of iron powder coal-pressing ball compound binding agent |
-
2017
- 2017-11-16 CN CN201711139796.9A patent/CN108149010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5306327A (en) * | 1990-09-26 | 1994-04-26 | Oriox Technologies, Inc. | Modified native starch base binder for pelletizing mineral material |
| CN104342552A (en) * | 2014-11-28 | 2015-02-11 | 任瑞刚 | Composite adhesive for metallurgical pellet and production method thereof |
| CN104651607A (en) * | 2015-02-05 | 2015-05-27 | 海城市托田炉料有限公司 | Magnesium-iron-based organic adhesive for iron-making pellet |
| CN105018170A (en) * | 2015-07-05 | 2015-11-04 | 田东昊润新材料科技有限公司 | Highly-efficient composite briquette binder |
| CN105219956A (en) * | 2015-10-30 | 2016-01-06 | 兰州大学 | A kind of preparation method of iron powder coal-pressing ball compound binding agent |
Cited By (9)
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|---|---|---|---|---|
| CN108823403A (en) * | 2018-08-21 | 2018-11-16 | 成渝钒钛科技有限公司 | A kind of iron sheet ball bonding agent, iron sheet ball and preparation method thereof |
| CN109403144A (en) * | 2018-10-26 | 2019-03-01 | 杭州特种纸业有限公司 | A kind of preparation method of antibacterial machine air filter paper |
| CN109403144B (en) * | 2018-10-26 | 2021-01-01 | 杭州特种纸业有限公司 | Preparation method of air filter paper of antibacterial machine |
| CN109505197A (en) * | 2018-10-30 | 2019-03-22 | 杭州特种纸业有限公司 | A kind of preparation method of pressure resistance filter paper for oil |
| CN109505197B (en) * | 2018-10-30 | 2021-01-01 | 杭州特种纸业有限公司 | Preparation method of pressure-resistant oil filter paper |
| CN109706314A (en) * | 2019-01-12 | 2019-05-03 | 王金华 | A kind of residual explosion-proof metallurgical briquetting binder of low fever |
| CN111020182A (en) * | 2019-12-24 | 2020-04-17 | 兰州申马节能环保科技有限公司 | Composite metallurgical pellet binder, cold-pressed pellet containing same and preparation method thereof |
| CN113249061A (en) * | 2021-05-23 | 2021-08-13 | 湖南众鑫新材料科技股份有限公司 | Vanadium trioxide ball-making binder and application thereof |
| CN113249061B (en) * | 2021-05-23 | 2022-09-09 | 湖南众鑫新材料科技股份有限公司 | Vanadium trioxide ball-making binder and application thereof |
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Application publication date: 20180612 |