CN104674001B - Efficient environment-friendly cheap adhesion agent of pellet and preparation method thereof - Google Patents
Efficient environment-friendly cheap adhesion agent of pellet and preparation method thereof Download PDFInfo
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- CN104674001B CN104674001B CN201410811434.XA CN201410811434A CN104674001B CN 104674001 B CN104674001 B CN 104674001B CN 201410811434 A CN201410811434 A CN 201410811434A CN 104674001 B CN104674001 B CN 104674001B
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- sodium hydroxide
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Abstract
The invention relates to an efficient environment-friendly cheap adhesion agent of pellet, which is prepared from the following raw materials in parts by weight: 65-75 parts weathered coal, 7-9 parts of sodium hydroxide, 1-3 parts of sodium lignin sulfonate, 7-9 parts of starch, 1-3 parts of cellulose, 4-6 parts of lime, 4-6 parts of coal gangue and 1-3 parts of borax; the invention further relates to a preparation method of the efficient environment-friendly cheap adhesion agent of pellet, comprising the following steps of: 1) respectively taking out the weathered coal, the lime and the coal gangue according to the needed parts by weight, mixing and crushing for later use; 2) taking out the needed parts by weight of sodium hydroxide, adding water, heating up and stirring until dissolving the sodium hydroxide sufficiently for later use; 3) mixing the materials respectively prepared in the steps 1) and 2), stirring evenly, backing to dry, and crushing for later use; 4) taking out the needed parts by weight of sodium lignin sulfonate, starch, cellulose and borax, and mixing with the material prepared in the step 3), stirring and packaging, thereby obtaining the adhesion agent. The adhesion agent provided by the invention is suitable for preparation of pellet, and has the advantages of scientific and rational matching of ingredients, high pellet forming quality, good smelting result, low cost and easy preparation.
Description
Technical field
The invention belongs to a kind of binding agent used in metallurgy, particularly a kind of to use for making pellet in smelting iron and steel
Binding agent and preparation method thereof.
Background technology
With the development of steel and iron industry, the material quantity needed for ironmaking is increasing.When smelting, in order to improve the effect of smelting
The quality of rate and ferrum, need by Ore fine grinding it is selected after make pellet and can just enter stove.At present, pellet has become iron and steel row
One of main feed stock for blast furnace of industry, pellet quality and the Main Bottleneck that pellet cost is also iron and steel enterprise's reduces cost.Ball
Nodulizing can obtain oxide pellet, cold bound pellets, metallic pellet etc. according to distinct methods, wherein, various pellets into
Type be unable to do without binding agent.Binding agent is that fine iron breeze is made into the indispensable important component of pelletizing, it is desirable to which it has preferable
Balling-up, made by roll into a ball ball and have preferable resistance to compression and fall crashworthiness hit intensity, also there is preferable low temperature intensity and height
The performances such as warm intensity, the preferable coefficient of expansion, reduction degree, reflowing temperature, to meet requirement and the production high-grade of blast furnace process
The effect of ferrum.At present, the binding agent for having used is generally divided into two big class：One is inorganic bond, and two is organic bond.It is inorganic
Binding agent is such as：Bentonite, waterglass, slaked lime, cement, clay etc.；Inorganic binder is mainly bentonite, bentonite adhesive
Using maturation, and China's bentonite resource is abundant, exploits low processing cost, strong adaptability, controlled range wide；But it burns residual rate
Height, necessarily causes the Iron grade of feed stock for blast furnace to reduce using bentonite as binding agent, and increased the content of silicon, refines blast furnace
The bright quantity of slag of ferrum smelting increases, and blast furnace coefficient declines, and burnup rises.Organic binder bond, such as：Humic acidss, want matter acid, carboxymethyl cellulose
Element etc., the organic binder bond that metallurgy group ball is used, bond effect is good, and consumption is few, but its price is higher, using immature, to essence
Breeze and pellet forming process require harshness, and organic binder bond is during intensification preheating and baking, it may occur that oxidation Decomposition etc. is anti-
Should, stress is produced, destruction preheating group spherical structure causes pre- calorific intensity very low, therefore China is using less.It is also inorganic and organic
The compound binding agent of composition, these technologies respectively have advantage, but have deficiency.It is, therefore, desirable to provide one kind more proportioning components are more
For reasonable, preparation method is more sophisticated, effect more preferably binding agent and preparation method thereof.
The content of the invention
The invention aims to solve above-mentioned technical problem, a kind of inexpensive bonding of high-efficiency environment friendly of pellet is proposed
Agent and preparation method thereof.The binding agent composition collocation is scientific and reasonable, and the quality of balling-up is good, and the bright effect of smelting is good, low production cost, and
And make easy.
The purpose of the present invention is achieved through the following technical solutions：
A kind of inexpensive binding agent of high-efficiency environment friendly of pellet, is prepared from by the raw material of following parts by weight：
A kind of inexpensive binding agent of high-efficiency environment friendly of pellet, it is prepared from by the raw material of following preferred weight number：
The preparation method of the inexpensive binding agent of the high-efficiency environment friendly of above-mentioned a kind of pellet, it is characterised in that including following step
Suddenly：
1) after mixing, with disintegrating machine 40-80 is crushed to by required parts by weight taking-up weathered coal, Calx, coal drystone respectively
Powder between mesh, it is standby；
2) sodium hydroxide of parts by weight needed for taking out, adds the water of 10-20%, carries out heating stirring fully molten to it
Change, it is standby after fully dissolving；
3) mixed powder that sodium hydroxide solution prepared by 2) step is prepared with 1) step is mixed, is stirred to its mixing
Uniformly, then Tumble Dry, then to be crushed to 40-80 mesh standby；
4) sodium lignin sulfonate, starch, cellulose, the Borax of parts by weight needed for taking out, with above 3) step prepare it is mixed
Compound material is blended together, stirs, and packages spare, the present invention binding agent.
The binding agent of the present invention is completely newly to burn pellet binder, and quality dominance can be high, and the little water absorption of consumption is big, quantity of return mines
It is low, the balling property of blended stock is enhanced, make pellet size uniform, intensity is big, and resistance to compression degree is high, and broken rate of grinding ball is low, it is possible to resolve existing
The high request to raw ore Haematite grade powder when sintering is smelted, with advantages below：
1st, weathered coal, coal drystone belong to coalification stone, are energy association fossils, there is the volatilization heat of 1500-2000 kilocalories, have
Beneficial to smokeless combustion；The heat energy of coal is supplemented, calorific value 20% is improved.
2nd, the horizontal acid sodium of lignin, starch, cellulose are nontoxic, tasteless, caking property network, and without ash, free from admixture, slag ash is few,
Less than 1%.
3rd, after being mixed into after sodium hydroxide thermosol, with sulfur fixation, the discharge of SO2, environmental protection, and heat stability are reduced
It is good.
4th, the recycling market of trade waste weathered coal, coal drystone, clean low-carbon discharge are made full use of.
5th, expand the utilization of clear energy sources, remove the discharge capacity that coal smoke destroys air, reduce the pollution to air.
6th, cohesive force is strong, is more than bentonitic twice mix homogeneously, and balling ratio is up to more than 95%, and intensity is big, resistance to compression
Degree is high, and broken rate of grinding ball is low, and induration property is good, improves pellet grade powder, reduces energy consumption and man-hour, reduces production cost, increases ton
Than income；
7th, water absorption is high, and affinity is strong, and the product is powder, the activity of the high-strength absorbing with high-specific surface area, to containing
The high Iron concentrate of the water yield can batch mixing molding without the need for drying；
8th, the grade of ferrum is improved, the product addition greatly reduces, and can promote development and the eutectic of the recrystallization of bloodstone
Point liquid phase is generated, and so as to change the induration property of pellet, reduces sintering temperature, shortens roasting time, more effectively carries ferrum of separating
Grade；
9th, it is with low cost, the low production cost of the binding agent and preparation method thereof, take raw material be easy to get it is inexpensive；And this is viscous
Knot agent participates in carburizing reagent in smelting process, and burning is complete, and residue of low pollution is low, produces without scar stove phenomenon, is conducive to machinery
Change energy-conservation and protection equipment, reduce energy consumption and man-hour, reduce production cost.
Specific embodiment
With reference to embodiment, the present invention is described further：
Embodiment 1：The inexpensive binding agent of a kind of high-efficiency environment friendly of pellet, by the raw material preparation of following parts by weight
Into：
Above-mentioned material is processed with following steps, is prepared into a kind of inexpensive binding agent of high-efficiency environment friendly of pellet：
1) after mixing, with disintegrating machine 40-80 is crushed to by required parts by weight taking-up weathered coal, Calx, coal drystone respectively
Powder between mesh, it is standby；
2) sodium hydroxide of parts by weight needed for taking out, adds 15% water, carries out heating stirring and fully dissolves to it, fills
Divide standby after dissolving；
3) mixed powder that sodium hydroxide solution prepared by 2) step is prepared with 1) step is mixed, is stirred to its mixing
Uniformly, then Tumble Dry, then to be crushed to 40-80 mesh standby；
4) sodium lignin sulfonate, starch, cellulose, the Borax of parts by weight needed for taking out, with above 3) step prepare it is mixed
Compound material is blended together, stirs, and packages spare, the present invention binding agent.
Embodiment 2：
A kind of inexpensive binding agent of high-efficiency environment friendly of pellet, it is prepared from by the raw material of following parts by weight：
Preparation method is with embodiment 1.
Embodiment 3：A kind of inexpensive binding agent of high-efficiency environment friendly of pellet, its by following preferred weight number raw material system
It is standby to form：
Preparation method is with embodiment 1.
Above example is on probation in certain steel plant, and effect is very good, has stronger gluing using the binding agent of the present embodiment 2
Knot property, with the shatter strength of green pellet of the pellet of its production, comprcssive strength and the ripe ball comprcssive strength of finished product existing bonding is exceeded
The performance indications of the pellet that agent is produced, can increase the kilocalorie of Filter Tuber For Clean Coal calorific value 1600, in being detected by national coal quality surveillance
The heart is detected as：Increase heat stability 92.6%, with good thermostability, calorific intensity at 1016 degree.And with solid sulphur emissions
Effect, same coal can increase the thermal efficiency 20% to 25%, and the addition of the binding agent of the present embodiment is fine ore quality
0.8-1.0%, reduces the consumption of binding agent；Residual rate is burnt with pellet made by the binding agent of the present embodiment low, enter stove iron mine
The grade of stone is improved, and reduces the quantity of slag 20% of blast furnace ironmaking smelting, reduces the consumption of coke, and burnup reduces by 15%；Subtract
Few waste gas discharge 45%, also directly can carry out ball processed, energy-conservation, consumption reduction, environmental protection, reduction production cost using existing pelletizer.
Claims (2)
1. a kind of inexpensive binding agent of high-efficiency environment friendly of pellet, is prepared from by the raw material of following parts by weight：
Weathered coal：65-75 parts
Sodium hydroxide：7-9 parts
Sodium lignin sulfonate：1-3 parts
Starch：7-9 parts
Cellulose：1-3 parts
Calx：4-6 parts
Coal drystone：1-3 parts
Borax：1-3 parts；
The preparation method of the binding agent is comprised the following steps：
1) respectively by required parts by weight take out weathered coal, Calx, coal drystone, after mixing, with disintegrating machine be crushed to 40-80 mesh it
Between powder, it is standby；
2) sodium hydroxide of parts by weight needed for taking out, adds the water of 10-20%, carries out heating stirring and fully dissolves to it, fills
Divide standby after dissolving；
3) mixed powder that sodium hydroxide solution prepared by 2) step is prepared with 1) step is mixed, stirs equal to its mixing
It is even, then Tumble Dry, then to be crushed to 40-80 mesh standby；
4) sodium lignin sulfonate, starch, cellulose, the Borax of parts by weight needed for taking out, with the mixture that above 3) prepared by step
Material it is blended together, stir, package spare, binding agent.
2. the inexpensive binding agent of the high-efficiency environment friendly of a kind of pellet according to claim 1, it is characterised in that：The bonding agent
The parts by weight of each raw material are as follows：
Weathered coal：70 parts
Sodium hydroxide：8 parts
Sodium lignin sulfonate：2 parts
Starch：8 parts
Cellulose：2 parts
Calx：5 parts
Coal drystone：5 parts
Borax：2 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811434.XA CN104674001B (en) | 2014-12-24 | 2014-12-24 | Efficient environment-friendly cheap adhesion agent of pellet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811434.XA CN104674001B (en) | 2014-12-24 | 2014-12-24 | Efficient environment-friendly cheap adhesion agent of pellet and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104674001A CN104674001A (en) | 2015-06-03 |
| CN104674001B true CN104674001B (en) | 2017-04-19 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105694785B (en) * | 2016-01-26 | 2018-12-04 | 云南邦特新材料有限公司 | A kind of binder and preparation method thereof joined calcium carbide stove exhaust dust |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1123314A (en) * | 1994-11-16 | 1996-05-29 | 北京国际科工贸研究所萍乡分所 | Highly-effective shaped coal good for environment protection and production method thereof |
| CN1205356A (en) * | 1997-07-15 | 1999-01-20 | 萍乡市腐植酸工业公司化工厂 | Novel powdered coal adhesion agent and its making method |
| CN1746321A (en) * | 2004-09-08 | 2006-03-15 | 翼城县明亮钢铁有限公司 | Composite globular mineral binder and production thereof |
| CN101220411B (en) * | 2007-01-08 | 2010-12-08 | 王永清 | Low-temperature concretion adhesive for pellet ore |
| CN101486936A (en) * | 2009-02-25 | 2009-07-22 | 朱贞丽 | Method for preparing clean molded coal from pulverized coal |
| CN103725875B (en) * | 2013-12-30 | 2015-03-25 | 吴雪健 | High-performance pellet |
| CN103992768A (en) * | 2014-03-29 | 2014-08-20 | 张长杰 | Normal pressure method coking coal and ore powder molding binder and molding method |
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