CN109400016A - Geo-polymer porous insulation material and preparation method thereof based on burning city domestic garbage bottom ash - Google Patents
Geo-polymer porous insulation material and preparation method thereof based on burning city domestic garbage bottom ash Download PDFInfo
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- CN109400016A CN109400016A CN201811149102.4A CN201811149102A CN109400016A CN 109400016 A CN109400016 A CN 109400016A CN 201811149102 A CN201811149102 A CN 201811149102A CN 109400016 A CN109400016 A CN 109400016A
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- bottom ash
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- metakaolin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of geo-polymer porous insulation material and preparation method thereof based on burning city domestic garbage bottom ash, the raw material of the geo-polymer porous insulation material includes: incineration bottom ash, metakaolin and alkali-activator；Preparation method is that incineration bottom ash powder first is made in incineration bottom ash washing, dry, ball milling, by metakaolin, metakaolin powder is made in dry, ball milling again, then incineration bottom ash powder is mixed with metakaolin powder, mixed-powder and alkali-activator are mixed, geo-polymer slurry obtained is poured, it is demoulded after 60-80 DEG C of dry 12-24h, porous insulation material is obtained after maintenance.For the present invention by utilizing burning city domestic garbage bottom ash, a small amount of metakaolin is added in cooperation, polymerization reaction occurs under the action of alkali-activator to prepare geo-polymer, realizes the secondary use of burning city domestic garbage bottom ash.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of geology based on burning city domestic garbage bottom ash
Polyalcohol stephanoporate thermal insulation material and preparation method thereof.
Background technique
The burning of domestic waste has become the worldwide trend of waste management, especially in soil scarce areas, burns
The volume and quality of rubbish can be not only greatly reduced, so that effective inactivation of pathogen, moreover it is possible to thermal energy be recycled and generated electricity.City is raw
Waste incineration living generally generates two kinds of lime-ash, i.e. incineration bottom ash and flying ash, they are usually at refuse landfill
Reason.In total ash, about 80% weight is incineration bottom ash, compared with flying ash, containing less organic substance, can be leached
Heavy metal and chloride, therefore, the Exploitative potential of incineration bottom ash wants much higher.Silica rich in incineration bottom ash
And aluminium oxide, it can be used as the material of manufacture geo-polymer.
Geo-polymer is belonged to containing the various amorphous Si-O-Al three-D inorganic polymer materials to half hitch crystal phase
Nonmetallic materials, it is possible to provide mechanical performance suitable or better with conventional cement sill.Compared with ordinary portland cement, ground
Matter polymer has many advantages, such as high-strength, hyposmosis, acid and alkali-resistance, low thermally conductive.Meanwhile the energy needed for the preparation process of geo-polymer
Less, greenhouse gas emission is few, is the excellent sustainable substitute of ordinary portland cement.
The raw material that tradition prepares geo-polymer are mainly metakaolin, flyash, slag etc., and aluminium powder is as inflation
Agent is mixed into slurry with alkali-activator, is poured into mold, and in room temperature to 80 DEG C of maintenances, but this kind of geology polymerize
Price lattice are higher, and natural minerals consumption is larger, easily cause resource exhaustion.
Summary of the invention
The object of the present invention is to provide a kind of geo-polymer porous thermal insulating material based on burning city domestic garbage bottom ash
Material and preparation method thereof, by utilizing burning city domestic garbage bottom ash, a small amount of metakaolin is added in cooperation, in alkali-activator
Under the action of polymerization reaction occurs to prepare geo-polymer, realize the secondary use of burning city domestic garbage bottom ash.
A kind of geo-polymer porous insulation material based on burning city domestic garbage bottom ash, raw material include: to burn bottom
Ash, metakaolin and alkali-activator；The mass ratio of incineration bottom ash and metakaolin is 58-75:25-42, the quality sum of the two
It is 100, the quality of alkali-activator is the 25-35% of the two quality sum.
Further, the alkali-activator is made of sodium hydroxide solution and water glass solution, sodium hydroxide solution and water
The mass ratio of glass solution is 1:3-1:5, and the concentration of sodium hydroxide solution is 8mol/L, and the modulus of waterglass is 1.1~1.5.
The preparation method of the above-mentioned geo-polymer porous insulation material based on burning city domestic garbage bottom ash, including with
Lower step:
Step 1, incineration bottom ash powder, then the dry, ball by metakaolin first is made in incineration bottom ash washing, dry, ball milling
It is milled into metakaolin powder, then mixes incineration bottom ash powder with metakaolin powder；
Step 2, sodium hydroxide solution is mixed with water glass solution, is cooled to 25 DEG C, alkali-activator is made；
Step 3,30-60min is mixed in the alkali-activator of step 2 and the mixed-powder of step 1, geology polymerization is made
Object slurry；
Step 4, the geo-polymer slurry of step 3 is poured, demoulds after 60-80 DEG C of dry 12-24h, is obtained after maintenance
Porous insulation material.
It further, is to mix distilled water by liquid-solid ratio 2-4mL/g with incineration bottom ash by incineration bottom ash washing in step 1
After washed.Remaining organic matter in bottom ash can be effectively removed by washing, preferably liquid-solid ratio be 2-4mL/g be to it is water-saving with
Effectively remove the balance of remaining organic matter in bottom ash.
Further, the partial size of the incineration bottom ash powder and metakaolin powder is respectively less than 75 μm, to guarantee bottom ash energy
Polymerization reaction preferably occurs under the conditions of alkali-activator.
Further, in step 4 curing condition be 25~80 DEG C hydrothermal curing 7 days.
Compared with the prior art, the advantages of the present invention are as follows:
1, geo-polymer porous insulation material of the invention, by burning city domestic garbage bottom ash, this has the material
The inorganic matter of abundant silica and aluminium oxide introduces geo-polymer system, turns waste into wealth；
2, the present invention is decomposed under alkaline condition by original aluminium in incineration bottom ash and generates hydrogen, in geo-polymer
Stomata is formed, compared to, as aerating agent, the porous insulation material of invention preparation has very low lead using aluminium powder, hydrogen peroxide
Hot coefficient, and to more environment-friendly；
3, porous insulation material prepared by the present invention belongs to inorganic material using incineration bottom ash as matrix, has good anti-
Fiery performance；
4, preparation method of the invention has the advantages that environmental protection, price is excellent honest and clean, preparation method is simple, and thermal insulating material obtained
Expect that compression strength is good, stability is good.
Detailed description of the invention
Fig. 1 is the preparation method flow diagram of geo-polymer porous insulation material of the present invention.
Specific embodiment
Technical solution of the present invention is described further below with reference to embodiment.
The present invention is based on the geo-polymer porous insulation materials of burning city domestic garbage bottom ash, with domestic waste
Incineration bottom ash matrix cooperates a small amount of metakaolin, and original aluminium is as aerating agent in incineration bottom ash, under alkali-activator effect
Prepare the geo-polymer porous insulation material based on burning city domestic garbage bottom ash.The geo-polymer porous thermal insulating of preparation
Material has good compression strength and lower thermal coefficient.
Embodiment 1
A kind of geo-polymer based on burning city domestic garbage bottom ash, form substantially by mass percentage include with
Lower component: incineration bottom ash 75%, metakaolin 25%.
Preparation method: first washing incineration bottom ash, then incineration bottom ash and metakaolin is separately dried, ball milling, later will
Incineration bottom ash and metakaolin are ground into the powder less than 75 μm, and uniformly mixing, obtains raw mixture according to the ratio.By hydroxide
Sodium solution (8mol/L) and water glass solution 1:3 in mass ratio mixing, obtain alkali-activator.By alkali-activator (alkali-activator
Dosage is the 25% of mixture quality) it is added to uniform stirring 30min in raw mixture, obtain geo-polymer slurry.It will
Slurry is poured into mold (40mm × 40mm × 160mm), and drying demoulds afterwards for 24 hours at 70 DEG C of drying box, then at 80 DEG C
Hydrothermal curing 7 days, obtain porous insulation material.
Embodiment 2
A kind of geo-polymer based on burning city domestic garbage bottom ash, form substantially by mass percentage include with
Lower component: incineration bottom ash 72%, metakaolin 28%.
Preparation method: first washing incineration bottom ash, then incineration bottom ash and metakaolin is separately dried, ball milling, later will
Incineration bottom ash and metakaolin are ground into the powder less than 75 μm, and uniformly mixing, obtains raw mixture according to the ratio.By hydroxide
Sodium solution (8mol/L) and water glass solution 1:3 in mass ratio mixing, obtain alkali-activator.By alkali-activator (alkali-activator
Dosage is the 28% of mixture quality) it is added to uniform stirring 45min in raw mixture, obtain geo-polymer slurry.It will
Slurry is poured into mold (40mm × 40mm × 160mm), and drying demoulds afterwards for 24 hours at 70 DEG C of drying box, then at 80 DEG C
Hydrothermal curing 7 days, obtain porous insulation material.
Embodiment 3
A kind of geo-polymer based on burning city domestic garbage bottom ash, form substantially by mass percentage include with
Lower component: incineration bottom ash 68%, metakaolin 32%.
Preparation method: first washing incineration bottom ash, then incineration bottom ash and metakaolin is separately dried, ball milling, later will
Incineration bottom ash and metakaolin are ground into the powder less than 75 μm, and uniformly mixing, obtains raw mixture according to the ratio.By hydroxide
Sodium solution (8mol/L) and water glass solution 1:4 in mass ratio mixing, obtain alkali-activator.By alkali-activator (alkali-activator
Dosage is the 30% of mixture quality) it is added to uniform stirring 60min in raw mixture, obtain geo-polymer slurry.It will
Slurry is poured into mold (40mm × 40mm × 160mm), and drying demoulds afterwards for 24 hours at 70 DEG C of drying box, then at 80 DEG C
Hydrothermal curing 7 days, obtain porous insulation material.
Embodiment 4
A kind of geo-polymer based on burning city domestic garbage bottom ash, form substantially by mass percentage include with
Lower component: incineration bottom ash 63%, metakaolin 37%.
Preparation method: first washing incineration bottom ash, then incineration bottom ash and metakaolin is separately dried, ball milling, later will
Incineration bottom ash and metakaolin are ground into the powder less than 75 μm, and uniformly mixing, obtains raw mixture according to the ratio.By hydroxide
Sodium solution (8mol/L) and water glass solution 1:4 in mass ratio mixing, obtain alkali-activator.By alkali-activator (alkali-activator
Dosage is the 32% of mixture quality) it is added to uniform stirring 30min in raw mixture, obtain geo-polymer slurry.It will
Slurry is poured into mold (40mm × 40mm × 160mm), and drying demoulds afterwards for 24 hours at 70 DEG C of drying box, then at 80 DEG C
Hydrothermal curing 7 days, obtain porous insulation material.
Embodiment 5
A kind of geo-polymer based on burning city domestic garbage bottom ash, form substantially by mass percentage include with
Lower component: incineration bottom ash 58%, metakaolin 42%.
Preparation method: first washing incineration bottom ash, then incineration bottom ash and metakaolin is separately dried, ball milling, later will
Incineration bottom ash and metakaolin are ground into the powder less than 75 μm, and uniformly mixing, obtains raw mixture according to the ratio.By hydroxide
Sodium solution (8mol/L) and water glass solution 1:5 in mass ratio mixing, obtain alkali-activator.By alkali-activator (alkali-activator
Dosage is the 35% of mixture quality) it is added to uniform stirring 60min in raw mixture, obtain geo-polymer slurry.It will
Slurry is poured into mold (40mm × 40mm × 160mm), and drying demoulds afterwards for 24 hours at 70 DEG C of drying box, then at 80 DEG C
Hydrothermal curing 7 days, obtain porous insulation material.
Embodiment 1-5 test block pressure resistance intensity and thermal coefficient are measured, as a result shown in following table:
| Apparent density (kg/m3) | Compression strength (MPa) | Thermal coefficient (W/ (mK)) | |
| Embodiment 1 | 821 | 8.5 | 0.21 |
| Embodiment 2 | 873 | 8.9 | 0.17 |
| Embodiment 3 | 864 | 9.7 | 0.16 |
| Embodiment 4 | 889 | 11.8 | 0.13 |
| Embodiment 5 | 874 | 10.4 | 0.14 |
As seen from the above table, geo-polymer porous insulation material of the invention has preferable mechanical property and lower leads
Hot coefficient, preparation method have the advantages that environmental protection, price is excellent honest and clean, preparation method is simple.
Claims (6)
1. the geo-polymer porous insulation material based on burning city domestic garbage bottom ash, it is characterised in that: raw material includes: to burn
Burn bottom ash, metakaolin and alkali-activator；The mass ratio of incineration bottom ash and metakaolin is 58-75:25-42, the quality of the two
The sum of be 100, the 25-35% for quality sum that both the quality of alkali-activator is.
2. the geo-polymer porous insulation material according to claim 1 based on burning city domestic garbage bottom ash,
Be characterized in that: the alkali-activator is made of sodium hydroxide solution and water glass solution, sodium hydroxide solution and water glass solution
Mass ratio be 1:3-1:5, the concentration of sodium hydroxide solution is 8mol/L, and the modulus of waterglass is 1.1~1.5.
3. the preparation side of the geo-polymer porous insulation material described in claim 1 based on burning city domestic garbage bottom ash
Method, it is characterised in that: the following steps are included:
Step 1, incineration bottom ash powder, then dry, the ball milling system by metakaolin first is made in incineration bottom ash washing, dry, ball milling
At metakaolin powder, then incineration bottom ash powder is mixed with metakaolin powder；
Step 2, sodium hydroxide solution is mixed with water glass solution, is cooled to 25 DEG C, alkali-activator is made；
Step 3,30-60min is mixed in the alkali-activator of step 2 and the mixed-powder of step 1, geo-polymer slurry is made
Material；
Step 4, the geo-polymer slurry of step 3 is poured, demoulds, is obtained after maintenance porous after 60-80 DEG C of dry 12-24h
Thermal insulation material.
4. the system of the geo-polymer porous insulation material according to claim 3 based on burning city domestic garbage bottom ash
Preparation Method, it is characterised in that: washing incineration bottom ash in step 1 is to mix distilled water and incineration bottom ash by liquid-solid ratio 2-4mL/g
It is washed after conjunction.
5. the system of the geo-polymer porous insulation material according to claim 3 based on burning city domestic garbage bottom ash
Preparation Method, it is characterised in that: the partial size of the incineration bottom ash powder and metakaolin powder is respectively less than 75 μm.
6. the system of the geo-polymer porous insulation material according to claim 3 based on burning city domestic garbage bottom ash
Preparation Method, it is characterised in that: in step 4 curing condition be 25-80 DEG C hydrothermal curing 7 days.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110041016A (en) * | 2019-04-15 | 2019-07-23 | 中国农业大学 | A kind of geo-polymer adsorbent material and preparation method thereof |
| CN112745079A (en) * | 2021-01-13 | 2021-05-04 | 武汉大学 | Polymer with high carbonization resistance and preparation method thereof |
| CN113233821A (en) * | 2021-03-31 | 2021-08-10 | 深圳信息职业技术学院 | Cement-free waste incinerator slag-based baking-free brick and preparation method thereof |
| CN113307554A (en) * | 2021-06-10 | 2021-08-27 | 北京科技大学 | Method for preparing foamed geopolymer from waste incineration ash |
| CN113636856A (en) * | 2021-08-26 | 2021-11-12 | 安徽理工大学 | Self-foaming light material for municipal solid waste incineration bottom ash and preparation method thereof |
| CN113831037A (en) * | 2021-09-17 | 2021-12-24 | 深圳大学 | Cementing material and preparation method thereof |
| CN114249561A (en) * | 2021-12-27 | 2022-03-29 | 盐城工学院 | Geopolymer foamed cement heat-insulating material and preparation method thereof |
| CN114621027A (en) * | 2022-03-14 | 2022-06-14 | 上海康恒环境股份有限公司 | Method for preparing modified geopolymer perforated brick from waste incineration fly ash |
| CN114988769A (en) * | 2022-05-26 | 2022-09-02 | 中国矿业大学 | High-strength geopolymer plugging filling material based on waste incineration bottom ash and preparation method thereof |
| CN116943603A (en) * | 2023-06-20 | 2023-10-27 | 长江勘测规划设计研究有限责任公司 | Preparation method of recyclable porous adsorption material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110041016B (en) * | 2019-04-15 | 2020-06-30 | 中国农业大学 | Geopolymer adsorbing material and preparation method thereof |
| CN110041016A (en) * | 2019-04-15 | 2019-07-23 | 中国农业大学 | A kind of geo-polymer adsorbent material and preparation method thereof |
| CN112745079A (en) * | 2021-01-13 | 2021-05-04 | 武汉大学 | Polymer with high carbonization resistance and preparation method thereof |
| CN112745079B (en) * | 2021-01-13 | 2022-02-11 | 武汉大学 | Polymer with high carbonization resistance and preparation method thereof |
| CN113233821B (en) * | 2021-03-31 | 2022-11-15 | 深圳信息职业技术学院 | Cement-free waste incinerator slag-based baking-free brick and preparation method thereof |
| CN113233821A (en) * | 2021-03-31 | 2021-08-10 | 深圳信息职业技术学院 | Cement-free waste incinerator slag-based baking-free brick and preparation method thereof |
| CN113307554A (en) * | 2021-06-10 | 2021-08-27 | 北京科技大学 | Method for preparing foamed geopolymer from waste incineration ash |
| CN113636856A (en) * | 2021-08-26 | 2021-11-12 | 安徽理工大学 | Self-foaming light material for municipal solid waste incineration bottom ash and preparation method thereof |
| CN113831037A (en) * | 2021-09-17 | 2021-12-24 | 深圳大学 | Cementing material and preparation method thereof |
| CN114249561A (en) * | 2021-12-27 | 2022-03-29 | 盐城工学院 | Geopolymer foamed cement heat-insulating material and preparation method thereof |
| CN114621027A (en) * | 2022-03-14 | 2022-06-14 | 上海康恒环境股份有限公司 | Method for preparing modified geopolymer perforated brick from waste incineration fly ash |
| CN114988769A (en) * | 2022-05-26 | 2022-09-02 | 中国矿业大学 | High-strength geopolymer plugging filling material based on waste incineration bottom ash and preparation method thereof |
| CN116943603A (en) * | 2023-06-20 | 2023-10-27 | 长江勘测规划设计研究有限责任公司 | Preparation method of recyclable porous adsorption material |
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Application publication date: 20190301 |