CN107417150A - A kind of high-strength light high-content fly ash haydite and preparation method thereof - Google Patents
A kind of high-strength light high-content fly ash haydite and preparation method thereof Download PDFInfo
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract
The present invention provides a kind of high-strength light high-content fly ash haydite and preparation method thereof, and according to the mass fraction, the haydite includes：0~10 part of 70~95 parts of flyash, 1~5 part of plasticizer, 0~5 part of foaming agent, 0~10 part of fluxing agent and reinforcing agent.Lytag high-strength light provided by the invention, density rating are up to 600 900kg/m3, cylindrical compress strength is up to 7 15MPa, and water absorption rate as little as 3 5% is not easily damaged；Available for preparing lightweight aggregate high performance concrete, building wall board, bridge and pipeline.And《Light-weight aggregate and its experimental method part 1：Light-weight aggregate》In require relatively low, density range is in 600 900kg/m3High-strength ceramic granule intensity requirement be 4 6.5MPa, water absorption rate is generally below 20%.
Description
Technical field
The present invention relates to solid waste resource recovery to utilize technical field, and in particular to a kind of high-strength light high additive fine coal
Grey haydite and preparation method thereof
Background technology
The flyash of catching in coal-fired flue-gas, be the discarded object of power boiler discharge discharged in coal-burning power plant, be mainly derived from
Coal dust is the thermal power plant of fuel and the coal-burning boiler of concentrated supply of heating in the city.With the fast development of power industry, coal-burning power plant's powder
The discharge capacity of coal ash increases year by year, flyash can dust pollution environment, be discharged into water system and can silt river, harmful chemicals thing therein up
Matter can also cause to seriously endanger to human body and other biological.
Lytag using flyash as primary raw material, it is the warp using a small amount of clay or other binding materials as binding agent
The light-weight aggregate that grinding balling-up or mud balling-up, roasting form.The color of lytag is in faint yellow or slightly black, surface ratio
It is rougher but very hard, there is cellular stomata inside it.Lytag has that intensity is high, thermal conductivity is low, insulation
The features such as performance and good chemical stability, deficiency are that density is larger, and water absorption rate is higher.
The Chinese patent of Application No. 201610826984.8, entitled " preparation method of light, and high-strength fly-ash haydite "
Application, discloses a kind of preparation method of light, and high-strength fly-ash haydite, and the method is by flyash, pore creating material, cosolvent, bonding agent
Mixed with reinforcing agent, ball milling, be granulated, calcine through granulating disc, obtain light, and high-strength fly-ash haydite；But the deficiency of the method
It is in mean water absorption rate >=20%, does not meet the light-weight aggregates of GB17431.1-2010 and its experimental standard, and do not disclose and obtain
Haydite specific cylindrical compress strength and bulk density.
Therefore, to overcome, low existing lytag balling ratio, low intensity, water absorption rate are too high, bulk density is relatively single
The problems such as, it is desirable to provide a kind of lightweight, high-strength, thermal conductivity factor is low, refractoriness is high, and chemical stability is good, durability and thermal insulation separation
The good building porcelain granule of sound performance,
The content of the invention
For existing lytag balling ratio is low, low intensity, water absorption rate is too high, bulk density is relatively single the problems such as,
Plasticizer, foaming agent, fluxing agent and reinforcing agent are added in flyash, produces lightweight, high-strength, thermal conductivity factor is low, refractoriness is high,
The building porcelain granule that chemical stability is good, durability and heat preservation and soundproof performance are good.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of high-strength light high-content fly ash haydite, the lytag include following groups according to the mass fraction
Part：
Preferably, the flyash includes following components with loss on ignition for 2-10% by mass percentage：
SiO230%-70%, Al2O310%-50%, CaO 1%-15%, Fe2O31%-18%, MgO 0.01%-
8% and TiO20.01%-3%.
Preferably, the plasticizer includes activated bentonite.
Preferably, the foaming agent includes the one or more selected from dolomite, carborundum and coal dust.
Preferably, the fluxing agent includes glass dust and/or feldspar.
Preferably, the reinforcing agent includes MnO2Content>60% manganese powder.
Preferably, the granularity of the component, which is respectively less than, is equal to 150 μm.
Preferably, the feldspar includes the one or more selected from lithium feldspar, potassium feldspar, albite and anorthite.
Preferably, the preparation method of the activated bentonite comprises the following steps：
(1), compound concentration is 1mol/L acetic acid solution；
(2), by the acetic acid solution and common calcium-base bentonite according to 1:10 mass parts ratio is mixed with compound；
(3), sealing cools after calcining the compound at 600~700 DEG C, milling 100 mesh of sieving, obtains basal activation
Bentonite；
(4), by basal activation bentonite described in 60g is wet support after, the stirring of 740g water is added under 10000r/min rotating speed
20min；
(5), the suspension after stirring is poured into 500ml beakers, the dense of suspension is tested using DV2T rotation viscometers
Degree；
(6), viscosity number >=2200mPa.s's is required activated bentonite
The preparation method of above-mentioned lytag, it is as follows that the preparation method includes step：
A, prepare mixture with each component, be granulated
B, dried at 100-300 DEG C, sinter 30-70min afterwards, be cooled to room temperature, obtain lytag.
With immediate prior art ratio, technical scheme provided by the invention has the advantages that：
1st, granulating rate is high, and single is granulated granulating rate up to 90%, and industrial production continuous granulation granulating rate is up to more than 95%；
2nd, the present invention adds manganese powder in the feed, and the intensity of finished product is improved；
3rd, product high-strength light, density rating 600-900kg/m3, cylindrical compress strength 6-15MPa, water absorption rate 3-5%, it is not easy
It is impaired；Lightweight aggregate high performance concrete can be prepared, as a kind of load-carrying members, can be applied to building wall board, bridge, pipeline etc.；
4th, product sphericity is good, density is low, water absorption rate is low, can make lightweight self-leveling concrete；
5th, by the adjustment of formula meet specific strength in certain limit (cylindrical compress strength and material bulk density of material it
Than) change；
6th, doping quantity of fly ash is up to 70~95；
7th, avoided in the active bentonite preparation process used in the present invention because the calcining of high temperature completely removes acetic acid
Substantial amounts of acid waste liquid is produced during conventional activation bentonite filter wash；And activity function at high temperature is higher than Conventional cryogenic
The activity function of pickling.
Embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1：
1st, raw material：Flyash 950g, activated bentonite 10g, carborundum 2g, coal dust 18g, feldspar 10g, manganese powder 10g
The composition of flyash is loss on ignition 5%：SiO2499.5g, Al2O3190.5g, CaO30.8g, Fe2O339.2g,
MgO 95g, TiO295g
2nd, preparation method：
A, mix：Weigh raw material to be sufficiently mixed, form compound；
B, it is granulated：Compound is granulated, forms particle；
C, dry：Particle is dried, 300 DEG C of drying temperature；
D, sinter：By drying particle by certain sintering process, 70min is sintered；
E, finished product：Sintered particles cool to room temperature, obtain the light high-strength haydite of finished product.
Embodiment 2：
1st, raw material：Flyash 900g, activated bentonite 20g, carborundum 5g, coal dust 25g, feldspar 25g, manganese powder 25g
The composition of flyash is loss on ignition 2%：SiO2270.3g, Al2O3450.5g, CaO 45.2g, Fe2O345g,
MgO 71g, TiO2 18g
2nd, preparation method：
A, mix：Weigh raw material to be sufficiently mixed, form compound；
B, it is granulated：Compound is granulated, forms particle；
C, dry：Particle is dried, 260 DEG C of drying temperature；
D, sinter：By drying particle by certain sintering process, 60min is sintered；
E, finished product：Sintered particles cool to room temperature, obtain the light high-strength haydite of finished product.
Embodiment 3：
1st, raw material：Flyash 820g, activated bentonite 30g, carborundum 10g, coal dust 30g, feldspar 60g, manganese powder 50g
The composition of flyash is loss on ignition 7%：SiO2328.3g, Al2O3246.3g, CaO 82.4g, Fe2O379g,
MgO 64g, TiO2 20g
2nd, preparation method：
A, mix：Weigh raw material to be sufficiently mixed, form compound；
B, it is granulated：Compound is granulated, forms particle；
C, dry：Particle is dried, 200 DEG C of drying temperature；
D, sinter：By drying particle by certain sintering process, 50min is sintered；
E, finished product：Sintered particles cool to room temperature, obtain the light high-strength haydite of finished product.
Embodiment 4：
1st, raw material：Flyash 750g, activated bentonite 40g, carborundum 15g, coal dust 25g, feldspar 80g, manganese powder 90g
The composition of flyash is loss on ignition 8%：SiO2225.1g, Al2O3375.1g, CaO 48.8g, Fe2O361g,
MgO 25g, TiO2 15g
2nd, preparation method：
A, mix：Weigh raw material to be sufficiently mixed, form compound；
B, it is granulated：Compound is granulated, forms particle；
C, dry：Particle is dried, 100 DEG C of drying temperature；
D, sinter：By drying particle by certain sintering process, 30min is sintered；
E, finished product：Sintered particles cool to room temperature, obtain the light high-strength haydite of finished product.
Embodiment 5：
1st, raw material：Flyash 700g, activated bentonite 50g, carborundum 20g, coal dust 30g, feldspar 100g, manganese powder 100g
The composition of flyash is loss on ignition 10%：SiO2300.86g, Al2O3245g, CaO 70g, Fe2O384g,
MgO 0.07g, TiO2 0.07g
2nd, preparation method：
A, mix：Weigh raw material to be sufficiently mixed, form compound；
B, it is granulated：Compound is granulated, forms particle；
C, dry：Particle is dried, 160 DEG C of drying temperature；
D, sinter：By drying particle by certain sintering process, 45min is sintered；
E, finished product：Sintered particles cool to room temperature, obtain the light high-strength haydite of finished product.
The preparation method of embodiment 6~10 is same as Example 1, and its raw material is formed and parameter is：
Flyash ratio used in embodiment 6~10 is the same as flyash described in embodiment 1
Light-high-strength haydite performance made from the sintering of embodiment 1~10 is as shown in the table：
One of the foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to this, appoints
The change or replacement what those familiar with the art can readily occur in the technical scope of present disclosure, all
It should be included within the scope of the present invention.
Claims (10)
1. a kind of high-strength light high-content fly ash haydite, it is characterised in that the lytag is included according to the mass fraction
Following components：
2. a kind of high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the flyash includes
Following components with loss on ignition for 2-10% by mass percentage：
SiO230%-70%, Al2O310%-50%, CaO 1%-15%, Fe2O31%-18%, MgO 0.01%-8% and
TiO20.01%-3%.
3. a kind of high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the plasticizer includes
Activated bentonite.
4. a kind of high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the foaming agent includes
The one or more selected from dolomite, carborundum and coal dust.
5. a kind of high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the fluxing agent includes
Glass dust and/or feldspar.
6. a kind of high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the reinforcing agent includes
MnO2Content>60% manganese powder.
A kind of 7. high-strength light high-content fly ash haydite as claimed in claim 1, it is characterised in that the granularity of the component
Respectively less than it is equal to 150 μm.
A kind of 8. high-strength light high-content fly ash haydite as claimed in claim 5, it is characterised in that the feldspar include from
The one or more selected in lithium feldspar, potassium feldspar, albite and anorthite.
A kind of 9. high-strength light high-content fly ash haydite as claimed in claim 3, it is characterised in that the activated bentonite
Preparation method comprise the following steps：
(1), compound concentration is 1mol/L acetic acid solution；
(2), by the acetic acid solution and common calcium-base bentonite according to 1:10 mass parts ratio is mixed with compound；
(3), sealing cools after calcining the compound at 600~700 DEG C, milling 100 mesh of sieving, obtains basal activation swelling
Soil；
(4), by basal activation bentonite described in 60g is wet support after, the stirring of 740g water is added under 10000r/min rotating speed
20min；
(5), the suspension after stirring is poured into 500ml beakers, the concentration of suspension is tested using DV2T rotation viscometers；
(6), viscosity number >=2200mPa.s's is required activated bentonite.
10. the preparation method of lytag as described in any one of claim 1~9, it is characterised in that the preparation method bag
It is as follows to include step：
A, prepare mixture with each component, be granulated
B, dried at 100-300 DEG C, sinter 30-70min afterwards, be cooled to room temperature, obtain lytag.
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| CN107915473A (en) * | 2017-12-07 | 2018-04-17 | 李珠 | Sintered coal ash super light ceramisite and preparation method thereof |
| CN108623310A (en) * | 2018-05-21 | 2018-10-09 | 广东惠众新材料科技股份有限公司 | A kind of ceramic plate and preparation method thereof |
| CN108794049A (en) * | 2018-08-23 | 2018-11-13 | 大连地拓环境科技有限公司 | A kind of magnesite tailings light ceramic and preparation method thereof |
| CN109081623A (en) * | 2018-10-26 | 2018-12-25 | 广东清大同科环保技术有限公司 | A kind of light-weight aggregate and preparation method thereof |
| CN109400108A (en) * | 2018-11-06 | 2019-03-01 | 海安南京大学高新技术研究院 | A kind of preparation method of light, and high-strength fly-ash haydite |
| CN110627521A (en) * | 2019-11-01 | 2019-12-31 | 西北大学 | Light high-strength ceramsite prepared from slate and preparation method thereof |
| CN110759745A (en) * | 2018-07-27 | 2020-02-07 | 广东清大同科环保技术有限公司 | High-strength cavity ceramsite and preparation method thereof |
| CN110950561A (en) * | 2018-09-26 | 2020-04-03 | 广东清大同科环保技术有限公司 | Nickel iron slag lightweight aggregate and preparation method thereof |
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| CN112745133A (en) * | 2020-12-31 | 2021-05-04 | 河南强耐新材股份有限公司 | Fly ash-based high-strength ceramsite and preparation method thereof |
| CN114436631A (en) * | 2021-12-30 | 2022-05-06 | 靖州县惠能耐火材料有限公司 | Preparation method of fly ash-based porous ceramic |
| CN117069506A (en) * | 2023-10-13 | 2023-11-17 | 赢胜节能集团股份有限公司 | Preparation process of thermal insulation and noise reduction ceramic fiber board |
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Application publication date: 20171201 |