CN102674742A - High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof - Google Patents
High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof Download PDFInfo
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- CN102674742A CN102674742A CN2012101678130A CN201210167813A CN102674742A CN 102674742 A CN102674742 A CN 102674742A CN 2012101678130 A CN2012101678130 A CN 2012101678130A CN 201210167813 A CN201210167813 A CN 201210167813A CN 102674742 A CN102674742 A CN 102674742A
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Abstract
The invention relates to a fly-ash brick blank composite plasticizing agent and a preparation process thereof. The process comprises the steps of taking sodium lignin sulfonate accounting for 0.5-1.0wt% of a fly-ash dry material, adding water accounting for 15-18wt% of the fly-ash dry material, stirring sufficiently for hydrolyzation, adding calcium lignosulphonate accounting for 0.5-1.0wt% of the fly-ash dry material and water glass accounting for 0.5-1.0wt% of the fly-ash dry material, and stirring sufficiently. The agent and the preparation process have the advantages that the sodium lignin sulfonate is soluble in water, has stable chemical properties and is capable of improving various physical properties of fly ash and improving dispersing performance and wettability of fly ash particles, when the sodium lignin sulfonate, the calcium lignosulphonate and the water glass serve as the fly-ash brick blank special plasticizing agent, the usage amount is low, the plasticizing effect is good, the production operation is easy, the production cost is reduced, and besides, the special plasticizing agent is wide in source of raw materials, low in price and capable of reducing the production cost greatly and shortening the production cycle.
Description
Technical field
The present invention relates to a kind of building brick fluidizer that uses flyash as raw material, relate in particular to high blending flyash adobe material composite plasticizer and preparation method thereof, belong to building material field.
Background technology
From order June 1 in 2000, the city that some coastal cities and land resources lack has begun to ban use of clay brick, and according to the production and the use of other clay-wares of condition restriction.To this situation, it is very necessary to produce vitrified brick with the flyash substitute for clay.
Flyash is the raw material through pyroprocessing, is a kind of lean property material, does not have plasticity; Only can not produce vitrified brick with a kind of raw material of flyash; This is because its not tightly packed property and free-running property and lack cohesiveness, and cause can not moulding, must an amount of sticker of adding.
The most doping quantity of fly ash of the flyash brick of prior art are all lower, generally are no more than 50%, and sticker adopts the high-ductility tonerde more.Its production technique is main with wet production, extrusion under vacuum, and its plasticity index that requires blank is greater than 7; Must adopt a series of big power-equipments for this reason; Stir processing requirements such as pinching mud to adapt to raw materials pretreatment, therefore, in facility investment, taken substantial contribution; Simultaneously also brought the product power consumption many, the inevitable outcome that product cost is high.Still need a large amount of clay materials when the flyash brick volume is low simultaneously, both do not met country, can not really reach the requirement that flyash is administered about protecting farmland and natural, ecological and materials for wall reform policies.
Therefore, extremely important to the research of flyash in great mixed amount vitrified brick blank plasticity improvement.
Recently there are document and patent disclosed about " sintered building brick with high flyash mixing amount and preparation method thereof "; Its doping quantity of fly ash can be up to the 85-95% weight part, and its used caking agent is sodium base bentonite and the property-modifying additive be made up of magnesium sulfide, red oxide of iron, iron protoxide.Sodium bentonite and property-modifying additive that wherein price is more expensive are at least 13.64%, and its cost of goods manufactured is obviously higher, are difficult to base oneself upon in market.In addition, this flyash brick working method adopts wet production, and water cut is high, and must increase time of drying, even warm air drying is also wanted 8-14 hour usually.
Other has all the other water glass of 3.5% of employing as caking agent, and the flyash content of this flyash brick can reach more than 95%, and the deficiency of its existence is that water glass content is too high.Make market be difficult to bear.Same its time of drying is also longer, under artificial environment, utilizes drying medium to carry out drying, still needs 36-48 hour.Roasting time is about 17-20 hour, and temperature needs staged to improve in the roasting process, and its process control is difficult for grasping the difficult quality guarantee of brick.
According to the present brickmaking enterprise requirement of China; Reach and utilize coal ash sintering brick on a large scale; Must accomplish extrusion moulding high blending flyash base substrate, must increase substantially the plasticity of flyash in great mixed amount compound, and will reach this target economically; Must select cheaply, plasticizing effect is relatively good and do not influence the technical requirements after the adulterant moulding.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned prior art and provide a kind of cheap, and doping quantity of fly ash is during up to 90-95wt%, the high blending flyash adobe material composite plasticizer that plasticizing effect is good.
Another object of the present invention provides the preparation method of high blending flyash adobe material composite plasticizer.
A further object of the invention provides the application method of high blending flyash adobe material composite plasticizer.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: high blending flyash adobe material composite plasticizer is characterized in that including the sodium lignosulfonate that accounts for flyash siccative addition 0.5-1.0wt%, accounts for the water glass of flyash siccative addition 0.5-1.0wt% and accounts for the wooden calcium of flyash siccative addition 0.5-1.0wt%.
Press such scheme, the consumption of described sodium lignosulfonate is for accounting for flyash siccative addition 1.0wt%; The consumption of wood calcium is for accounting for flyash siccative addition 0.5%, and the consumption of water glass is for accounting for flyash siccative addition 1.0%.
The preparation method of described high blending flyash adobe material composite plasticizer; It is characterized in that getting the sodium lignosulfonate that accounts for flyash siccative 0.5-1.0wt%; And adding the water that accounts for flyash siccative l5-18wt%, the control solution temperature is 50 ℃-80 ℃, fully stirs hydrolysis; In obtaining hydrolyzed solution, add wooden calcium that accounts for flyash siccative 0.5-1.0wt% and the water glass that accounts for flyash siccative 0.5-1.0wt% and fully stir, promptly obtain flyash tile blank composite plasticizer.
Press such scheme, the consumption of described sodium lignosulfonate is for accounting for flyash siccative addition 1.0wt%; The consumption of wood calcium is for accounting for flyash siccative addition 0.5%, and the consumption of water glass is for accounting for flyash siccative addition 1.0%.
The application method of described high blending flyash adobe material composite plasticizer is characterized in that including following steps;
1) gets the raw materials ready: get the flyash siccative in whisking appliance;
2) stir: the flyash siccative is mixed with high blending flyash adobe material composite plasticizer and powerful the stirring, make it thorough mixing, obtain flyash tile blank;
3) with step 2) the still aging 3-5 of flyash tile blank hour.
The present invention selects for use sodium lignosulfonate, water glass and wooden calcium to form composite plasticizer, improves the plasticity of flyash tile blank, contains phenylpropyl alcohol alkyl (C in the lignosulfonic acid sodium molecule
6-C
3) hydrophobic framework and sulfonic group be main hydrophilic radical, is the macromolecular compound with AS constitutional features.Be connected with various functional groups on the structural unit of sodium lignosulfonate, like the methoxyl group on the phenyl ring, the active hydroxyl of reactivity worth and carboxyl etc., the existence of these functional groups makes xylogen have very strong reactive behavior.The flyash particle in surface own closes key because some bridged bonds or lattice break to form insatiable hunger; Be easy to be connected, behind fly ash grain absorption sulfonated lignin, make itself stronger surface of hydrophobicity change wetting ability into the functional group of sodium lignosulfonate; And formation has the charged particle of certain thickness hydration shell; When static state, can form metastable three-D space structure, and not be adsorbed, have neither part nor lot in the free water that forms tight hydration shell through various microcosmic effects; Just be distributed in the space of this three-dimensional structure, this slurry will have high initial viscosity and attitude stability.When adding water glass and these colloids of wooden calcium or class colloidalmaterial; Itself can be used as the fly ash grain caking agent; After dispersed with stirring, be distributed between the coal grain bonding between the enhanced granule; And make the loose relatively static three-dimensional structure of formation between composite particles, thereby improve the plasticity of whole flyash system.
Beneficial effect of the present invention: sodium lignosulfonate is soluble in water, and the chemical property stabilization energy improves the various physicalies of flyash, improves the dispersing property and the wettability of fly ash grain; With wooden calcium, when water glass was used as flyash tile blank special use fluidizer together, consumption was little and plasticizing effect good; Operation is simple and easy on producing, and can reduce production costs, secondly; Specialist additive raw material sources of the present invention are extensive, and price is low, can reduce production costs greatly; Shorten the production cycle, and reduce the total cost of product effectively, have high economic, social benefit.
Description of drawings
Fig. 1 is the synoptic diagram that concerns of high blending flyash adobe material composite plasticizer volume of the present invention and plasticity index.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment with form or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall in protection scope of the present invention the details of technical scheme of the present invention.
Confirming of each set of dispense ratio of high blending flyash adobe material composite plasticizer of the present invention
In line with the good and cheap principle of plasticizing effect, according to document and experimental study, select for use sodium lignosulfonate, wooden calcium, water glass to carry out quadrature compound (like table 1), confirm the best proportioning of three kinds of compositions through the test of index of plasticity.
The level of factor table of table 1 orthogonal experiment
| Level of factor | A sodium lignosulfonate (%) | B wood calcium (%) | C water glass (%) |
| 1 | 0.5 | 0.5 | 0.5 |
| 2 | 0.8 | 0.8 | 0.8 |
| 3 | 1.0 | 1.0 | 1.0 |
Concrete experimental procedure:
A, get the raw materials ready, get 300g flyash siccative in whisking appliance;
B, join fluidizer, in sodium lignosulfonate, add the water that is equivalent to the heavy l5% of flyash siccative, water temperature fully stirs hydrolysis at 50 ℃-80 ℃, in the hydrolyzed solution that obtains, adds wooden calcium and water glass fully stirs, and promptly obtains flyash tile blank composite plasticizer;
C, flyash is mixed with high blending flyash adobe material composite plasticizer and powerful the stirring, make it thorough mixing, obtain flyash tile blank;
D, blank ageing, the blank after the stirring were left standstill three hours:
E, record index of plasticity through the plasticity-tester.Record result such as table 2:
Table 2 plasticity-orthogonal experiments
| Group number | A | B | C | I (mm) | I (mm) | I (mm) | I (mm) |
| 1 | 1 | 1 | 1 | 0.7 | 1.0 | 0.7 | 0.8 |
| 2 | 1 | 2 | 2 | 1.2 | 1.4 | 1.0 | 1.2 |
| 3 | 1 | 3 | 3 | 1.8 | 1.5 | 1.6 | 1.7 |
| 4 | 2 | 1 | 2 | 2.1 | 1.8 | 2.0 | 1.9 |
| 5 | 2 | 2 | 3 | 2.3 | 2.0 | 2.3 | 2.2 |
| 6 | 2 | 3 | 1 | 2.1 | 2.0 | 1.9 | 2.0 |
| 7 | 3 | 1 | 3 | 3.7 | 3.5 | 3.6 | 3.3 |
| 8 | 3 | 2 | 1 | 2.6 | 2.8 | 2.4 | 2.6 |
| 9 | 3 | 3 | 2 | 3.5 | 3.3 | 3.1 | 3.0 |
| k 1 | 3.7 | 6.3 | 5.4 | ? | ? | ? | ? |
| K 2 | 6.1 | 6.0 | 6.4 | ? | ? | ? | ? |
| k 3 | 9.5 | 7.0 | 7.4 | ? | ? | ? | ? |
| k 1 | 1.2 | 2.1 | 1.8 | ? | ? | ? | ? |
| K 2 | 2.0 | 2.0 | 2.1 | ? | ? | ? | ? |
| k 3 | 3.1 | 2.3 | 2.5 | ? | ? | ? | ? |
| R | 1.9 | 0.3 | 0.7 | ? | ? | ? | ? |
See A in the table 2 from the k value
3B
1C
3, and can know that by document and this laboratory results index of plasticity is belonging to neutral material more than 2.0, for flyash brick when index of plasticity in 2.5 last times, can satisfy the condition of moulding fully.So think as in the high blending flyash adobe material fluidizer A
3B
1C
3Composite plasticizer can improve index of plasticity 3.3, and plasticizing effect is best.
Confirming of the composite plasticizer consumption of fired fly ash brick blank
At definite composite plasticizer A
3B
1C
3Proportioning after, carry out the best experiment of consumption of composite plasticizer.
With composite plasticizer fluidizer A
3B
1C
3Proportioning after, mix in the compound of flyash-clay with 7 groups of different volumes respectively, through analyzing its influence, confirm the optimum mix amount to compound plasticity.
The index of plasticity result of the flyash clay of mixing 7 groups of fluidizers that records through the plasticity-tester is like table 2-1:
Table one composite plasticizer volume and plasticity index (I)
| Volume (%) | 0 | 0.5 | 1 | 1.5 | 2.0 | 2.5 | 3.0 |
| Index of plasticity (I) | 0.47 | 1.2 | 1.5 | 2.1 | 2.6 | 3.3 | 4.7 |
The blank assay of doing with flyash and water shows, flyash is not difficult to moulding when not adding any water reducer, and plasticity index is merely 0.47.Data drafting pattern with table one obtains Fig. 1.
Can know that by Fig. 1 along with the increase of composite plasticizer volume, compound plasticity obviously improves; After volume reached 1.5%, compound plasticity was 2.1, had reached the standard of neutral material; After volume reached 2.0%, compound plasticity was 2.6, can satisfy the condition of moulding fully.When the volume of fluidizer reached 3.0%, the plasticity-of compound can reach 4.7, had got into the category of active material, but considered industrial cost, and the optimum mix amount of selected composite plasticizer is 2.0%, and the index of plasticity of flyash reaches 2.6.
Therefore, to the best proportioning of composite plasticizer of the present invention: the content of sodium lignosulfonate is for accounting for flyash siccative addition 1.0wt%; The wood calcium contents is for accounting for flyash siccative addition 0.5 wt%, and water glass content is for accounting for flyash siccative addition 1.0 wt%, and the optimum mix amount is 2.0 wt % in high blending flyash.
More than being to analyze proportioning of the present invention and addition, is embodiment below.
1) gets the raw materials ready: get flyash siccative 300g in whisking appliance;
2) get the 2.8g sodium lignosulfonate, and add the water of 45g, the control solution temperature is 60 ℃, fully stirs hydrolysis, and the wooden calcium of adding 1.5g and the water glass of 2.8g fully stir in hydrolyzed solution, promptly obtain high blending flyash adobe material composite plasticizer;
3) stir: the high blending flyash adobe material composite plasticizer that flyash siccative and step 2 are obtained mixes and powerful the stirring, makes it thorough mixing, obtains flyash tile blank;
4) step 3) is obtained the still aging 3-5 of flyash tile blank hour.
Record index of plasticity through the plasticity-tester, record index of plasticity 2.1 as a result, can satisfy the condition of high blending flyash green brick forming basically.
1) gets the raw materials ready: get flyash 300g siccative in whisking appliance;
2) get the 3g sodium lignosulfonate, and add the water of 45g, the control solution temperature is 70 ℃, fully stirs hydrolysis, and the wooden calcium of adding 1.5 and the water glass of 3g fully stir in hydrolyzed solution, promptly obtain high blending flyash adobe material composite plasticizer;
3) stir: the high blending flyash adobe material composite plasticizer that flyash siccative and step 2 are obtained mixes and powerful the stirring, makes it thorough mixing, obtains flyash tile blank;
4) step 3) is obtained the still aging 3-5 of flyash tile blank hour.
Record index of plasticity through the plasticity-tester, record index of plasticity 2.6 as a result, can the fine condition that satisfies the moulding of high blending flyash adobe material.
Claims (5)
1. high blending flyash adobe material composite plasticizer is characterized in that including the sodium lignosulfonate that accounts for flyash siccative addition 0.5-1.0wt%, accounts for the water glass of flyash siccative addition 0.5-1.0wt% and accounts for the wooden calcium of flyash siccative addition 0.5-1.0wt%.
2. by the described high blending flyash adobe of claim 1 material composite plasticizer, the consumption that it is characterized in that described sodium lignosulfonate is for accounting for flyash siccative addition 1.0wt%; The consumption of wood calcium is for accounting for flyash siccative addition 0.5%, and the consumption of water glass is for accounting for flyash siccative addition 1.0%.
3. the preparation method of the described high blending flyash adobe of claim 1 material composite plasticizer; It is characterized in that getting the sodium lignosulfonate that accounts for flyash siccative 0.5-1.0wt%; And adding the water that accounts for flyash siccative l5-18wt%, the control solution temperature is 50 ℃-80 ℃, fully stirs hydrolysis; In obtaining hydrolyzed solution, add wooden calcium that accounts for flyash siccative 0.5-1.0wt% and the water glass that accounts for flyash siccative 0.5-1.0wt% and fully stir, promptly obtain flyash tile blank composite plasticizer.
4. by the preparation method of the described high blending flyash adobe of claim 3 material composite plasticizer, the consumption that it is characterized in that described sodium lignosulfonate is for accounting for flyash siccative addition 1.0wt%; The consumption of wood calcium is for accounting for flyash siccative addition 0.5%, and the consumption of water glass is for accounting for flyash siccative addition 1.0%.
5. claim contains the application method of 1 described high blending flyash adobe material composite plasticizer, it is characterized in that including following steps;
1) gets the raw materials ready: get the flyash siccative in whisking appliance;
2) stir: the flyash siccative is mixed with high blending flyash adobe material composite plasticizer and powerful the stirring, make it thorough mixing, obtain flyash tile blank;
3) with step 2) the still aging 3-5 of flyash tile blank hour.
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|---|---|---|---|
| CN2012101678130A CN102674742A (en) | 2012-05-28 | 2012-05-28 | High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof |
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|---|---|---|---|
| CN2012101678130A CN102674742A (en) | 2012-05-28 | 2012-05-28 | High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924027A (en) * | 2012-11-05 | 2013-02-13 | 芜湖沃多福新材料有限责任公司 | High-plastic-forming fly ash steam curing brick |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765809A (en) * | 2005-07-04 | 2006-05-03 | 赵宇昕 | Sintering brick additive and coal ash sintering brick highly doped with same |
-
2012
- 2012-05-28 CN CN2012101678130A patent/CN102674742A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765809A (en) * | 2005-07-04 | 2006-05-03 | 赵宇昕 | Sintering brick additive and coal ash sintering brick highly doped with same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924027A (en) * | 2012-11-05 | 2013-02-13 | 芜湖沃多福新材料有限责任公司 | High-plastic-forming fly ash steam curing brick |
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Application publication date: 20120919 |