CN108996930A - A kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material - Google Patents
A kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material Download PDFInfo
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- CN108996930A CN108996930A CN201810794223.8A CN201810794223A CN108996930A CN 108996930 A CN108996930 A CN 108996930A CN 201810794223 A CN201810794223 A CN 201810794223A CN 108996930 A CN108996930 A CN 108996930A
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
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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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to solid waste comprehensive utilization of resources fields, disclose a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material.After aluminium lime-ash is sieved first, is washed, drying pretreatment by this method, it is mixed by a certain percentage with blast furnace iron powder and flyash, using the aluminium powder in aluminium lime-ash as foaming agent, foam stabilizer is added, polymerization reaction occurs under alkali-activator effect and blistering reaction prepares foam geo-polymer slurry, obtains foam geo-polymer cementitious material through molding, curing in airtight condition.The method of the present invention preparation foam geo-polymer cementitious material have the characteristics that intensity it is high, it is fire-retardant and keep the temperature.The present invention realizes solid wastes recycling, simple process and low cost, solves in aluminium lime-ash various salts to material corrosion and spallation problems.
Description
Technical field
The invention belongs to solid waste comprehensive utilization of resources field, specifically discloses a kind of aluminium lime-ash and prepare foam geo-polymer
The method of cementitious material.
Background technique
Aluminium lime-ash is the by-product of aluminium and aluminium alloy smelting, is made of aluminium oxide, metallic aluminium, slag former etc..Ton electrolytic aluminium,
Primary aluminium alloy and secondary aluminium alloy generate 30~100kg aluminium lime-ash, about 2,400,000 tons of China's aluminium lime-ash in 2017.
Aluminium lime-ash has the double grading of resource and pollution.On the one hand, aluminium lime-ash is rich in aluminium and aluminium oxide, is valuable
Secondary resource；On the other hand, aluminium lime-ash in part pollutes environment, causes fire because of fluorine-containing salts, villaumite, aluminium nitride, aluminium simple substance
Deng being listed in HW48 danger solid waste.Therefore, aluminium lime-ash harmlessness disposing and resource utilization have become the bottleneck of aluminum i ndustry development
Problem.
Traditional aluminium disposal of ash and slag and recycling mode mainly has stir-fry ash to mention aluminium, for metallurgical reducing agent and landfill etc..It fries
A kind of aluminium cinder resource mode that the China Hui Tilvshi is widely used, but aluminium recovery is low, secondary lime-ash is not located effectively
It sets.Aluminium lime-ash is used for metallurgical reducing agent, and there are resource values to reduce, secondary smelting slag still needs to the disadvantages of handling.Aluminium lime-ash fills not
A large amount of soils are only taken up, also will cause secondary resource waste and ecological environmental pollution.
To realize aluminium ash comprehensive utilization, people have studied using aluminium lime-ash as primary raw material and prepare construction material.It is Chinese special
Sharp CN105800975A discloses a kind of application method of the smelting aluminium slag in low-alkalinity sulphoaluminate cement, use weight ratio for
4% aluminium slag, after being processed crushing, instead of clinker for producing low-alkalinity sulphoaluminate cement.But the invention aluminium
Slag adding proportion is low, and villiaumite, villaumite are not handled in aluminium slag, influences the performance of cement.
Chinese patent CN107814537A discloses a kind of method for preparing non-sintered pavement bricks with the residual ash of aluminium lime-ash, with
The residual ash of aluminium lime-ash passes through the activity of aluminium oxide, silica in the residual ash of ageing excitation etc. as mainly gathering materials.Addition high-performance subtracts
The additives such as aqua, early strength agent prepare non-sintered pavement bricks.But the villiaumite, villaumite in the invention aluminium lime-ash are to pavement bricks
Corrosion causes to peel off.
Chinese patent CN101318787 discloses the work that a kind of aluminum i ndustry technique waste residue is all transformed into ecological architectural material
Skill and method utilize solid waste --- the red mud (sintering process, Bayer process), Boiler Furnace of aluminum i ndustry institute's output in process of production
Slag, milltailings, ashing slag, gas generator slag, six kinds of waste residues itself of sludge material property, by drying, crushing, rationally
Proportion, machine-shaping (roll, squeeze) or sintering process, are converted into novel Load materials and construction material.The invention
Process flow is complicated, at high cost, and energy consumption is high.
To sum up, existing using aluminium lime-ash as raw material to prepare the construction materials such as cement, brick there are high cost, poor efficiency, environment
The problems such as burden weight, it is badly in need of developing low-cost, low energy consumption, high added value, free of contamination aluminium cinder resource utilization technology.
Summary of the invention
The problems such as there is high cost, poor efficiency, environmental pressure weights for the resource utilization of aluminium lime-ash, the present invention is public
A kind of low energy consumption, low cost, the aluminium lime-ash method for preparing foam geo-polymer cementitious material of simple process are opened.
The present invention is achieved by the following technical solutions:
A kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material, aluminium lime-ash is pre-processed to remove desalination
Class flux impurities mix aluminium lime-ash after pretreatment with blast furnace iron powder and flyash, add foam stabilizer and alkali-activator is mixed
Slurry is closed, foamed, molding, maintenance obtain foam geo-polymer cementitious material.
Further, the pretreatment of aluminium lime-ash includes wet-milling, screening, separation of solid and liquid, drying；Specific step is as follows:
(1) 15min~120min, solid-to-liquid ratio 1:1~10:1 wet-milling: are ground using water-wet；
(2) sieve: aluminium lime-ash via hole diameter≤2mm sieve after wet-milling carries out screening removal coarse fodder；
(3) it is separated by solid-liquid separation；
(4) dry: aluminium lime-ash water content≤10wt% after drying removes saline flux impurity.
Further, aluminium lime-ash, blast furnace iron powder and flyash three's mass ratio are as follows: aluminium lime-ash 50wt% after pretreatment~
60wt%, ground granulated blast furnace slag 10wt%~20wt%, flyash 20wt%~40wt%, three's total amount are 100wt%.
Further, the alkali-activator is the mixture of sodium hydroxide and waterglass, sodium hydroxide and waterglass matter
Amount is than being 0.5:1~5:1；The additional amount of alkali-activator be aluminium lime-ash, ground granulated blast furnace slag and flyash total amount 10wt%~
20wt%.
Further, the foam stabilizer is neopelex and triethanolamine mixture, dodecyl benzene sulfonic acid
Sodium and triethanolamine mass ratio are 1:1, foam stabilizer additional amount be aluminium lime-ash, ground granulated blast furnace slag and flyash total amount 1wt%~
5wt%.
Further, slurry is injected into after mold carries out polymerization reaction and blistering reaction 10min~30min and is sealed,
Then in 20 DEG C~100 DEG C maintenance 2h~obtain foam geo-polymer cementitious material for 24 hours, after demoulding.
Advantageous effects of the invention:
(1) the method for the invention is using containing a large amount of aluminium oxide as silicon source, with blast furnace iron powder, fine coal in aluminium lime-ash
Ash prepares geo-polymer as silicon source, realizes that aluminium lime-ash, blast furnace iron powder, Ash Utilization utilize；Aluminium lime-ash is utilized simultaneously
In metallic aluminium chemically reacted in gelatinization generate bubble, realize pore-creating effect；
(2) aluminium lime-ash is removed the flux impurities such as sylvite, sodium salt in aluminium lime-ash by the pretreatment such as wet-milling, screening, is solved
Various saline flux impurity can generate the problems such as burn into peels off to construction material in aluminium lime-ash aluminium ash；
(3) using residual Al in aluminium lime-ash as foaming agent, make its " making the best use of everything ", reduce cost of material；
(4) alkali-activator that the present invention uses can produce at normal temperature for the mixture of sodium hydroxide and waterglass
Raw rubber even reacts, therefore the foam geo-polymer curing temperature prepared is low, low energy consumption, simple process；
(5) the foam geo-polymer cementitious material of the method for the present invention preparation is generated by chemical reaction, belongs to chemical bond
In conjunction with, therefore the intensity of material is high；Because the cementitious material of preparation is stable inorganic material, no combustible, therefore flame retardant property is good；Glue
Contain air hole structure in gel material, can effectively reduce thermal conductivity, therefore good heat insulating.
Detailed description of the invention
Fig. 1 is that a kind of aluminium lime-ash provided in an embodiment of the present invention prepares foam geo-polymer cementitious material process flow and shows
It is intended to.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any substitution done on the essence and scope of the present invention being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to of the invention thin
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The present invention can also be understood completely in description.
Embodiment 1
Aluminium lime-ash and water are pressed into 10:1 Wet blend-milling 120min, with the sieve screening removal coarse fodder of aperture 1mm, obtain partial size
The aluminium lime-ash aqueous no more than 1mm, be separated by solid-liquid separation, dry after obtain water content be 10% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 50wt%, blast furnace iron powder 10wt%, flyash 40wt%, three it
Be 100%.Additional 15wt% alkali-activator and 2wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 0.5:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 10min, be sealed in 20 DEG C of maintenance 5h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 2
Aluminium lime-ash and water are pressed into 9.5:1 Wet blend-milling 113min, with the sieve screening removal coarse fodder of aperture 2mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 2mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 4%.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 51wt%, blast furnace iron powder 11wt%, flyash 38wt%, three it
Be 100%.Additional 17wt% alkali-activator and 4wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 0.54:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 12min, be sealed in 30 DEG C of maintenance 8h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 3
Aluminium lime-ash and water are pressed into 9:1 Wet blend-milling 106min, with the sieve screening removal coarse fodder of aperture 1.5mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.5mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 8%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 55wt%, blast furnace iron powder 12wt%, flyash 33wt%, three
The sum of be 100%.Additional 14wt% alkali-activator and 1wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 1:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 25min, be sealed in 40 DEG C of maintenance 10h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 4
Aluminium lime-ash and water are pressed into 8.5:1 Wet blend-milling 99min, with the sieve screening removal coarse fodder of aperture 1.1mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.1mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 6%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 54wt%, blast furnace iron powder 13wt%, flyash 33wt%, three
The sum of be 100%.Additional 12wt% alkali-activator and 1.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 2:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 28min, 50 DEG C of maintenance 15h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 5
Aluminium lime-ash and water are pressed into 8:1 Wet blend-milling 92min, with the sieve screening removal coarse fodder of aperture 1.3mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.3mm, be separated by solid-liquid separation, dry after obtain water content be 5% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 53wt%, blast furnace iron powder 14wt%, flyash 33wt%, three it
Be 100%.Additional 14wt% alkali-activator and 3wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 1.33:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 23min, be sealed in 35 DEG C of maintenance 23h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 6
Aluminium lime-ash and water are pressed into 7.5:1 Wet blend-milling 85min, with the sieve screening removal coarse fodder of aperture 1.8mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.8mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 7%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 60wt%, blast furnace iron powder 20wt%, flyash 20wt%, three
The sum of be 100%.Additional 10wt% alkali-activator and 3.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 4:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 16min, 45 DEG C of maintenance 15h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 7
Aluminium lime-ash and water are pressed into 7:1 Wet blend-milling 78min, with the sieve screening removal coarse fodder of aperture 1.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.9mm, be separated by solid-liquid separation, dry after obtain water content be 4% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 59wt%, blast furnace iron powder 16wt%, flyash 25wt%, three it
Be 100%.Additional 12wt% alkali-activator and 2.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 5:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 18min, be sealed in 60 DEG C of maintenances for 24 hours, after demoulding
To foam geo-polymer cementitious material.
Embodiment 8
Aluminium lime-ash and water are pressed into 6.5:1 Wet blend-milling 71min, with the sieve screening removal coarse fodder of aperture 2mm, obtain partial size
The aluminium lime-ash aqueous no more than 2mm, be separated by solid-liquid separation, dry after obtain water content be 4% aluminium lime-ash.By the aluminium ash after drying
Slag and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 58wt%, blast furnace iron powder 17wt%, flyash 25wt%, the sum of three
It is 100%.Additional 17wt% alkali-activator and 2.6wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 4.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 13min, be sealed in 70 DEG C of maintenance 21h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 9
Aluminium lime-ash and water are pressed into 6:1 Wet blend-milling 64min, with the sieve screening removal coarse fodder of aperture 1.1mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.1mm, be separated by solid-liquid separation, dry after obtain water content be 5% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 53wt%, blast furnace iron powder 18wt%, flyash 29wt%, three it
Be 100%.Additional 20wt% alkali-activator and 3.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 4:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 15min, be sealed in 21 DEG C of maintenance 2h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 10
Aluminium lime-ash and water are pressed into 5.5:1 Wet blend-milling 57min, with the sieve screening removal coarse fodder of aperture 1.3mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.3mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 6%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 54wt%, blast furnace iron powder 14wt%, flyash 32wt%, three
The sum of be 100%.Additional 10wt% alkali-activator and 4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 0.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 17min, 25 DEG C of maintenance 4h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 11
Aluminium lime-ash and water are pressed into 5:1 Wet blend-milling 50min, with the sieve screening removal coarse fodder of aperture 0.5mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.5mm, be separated by solid-liquid separation, dry after obtain water content be 2% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 60wt%, blast furnace iron powder 16wt%, flyash 24wt%, three it
Be 100%.Additional 12wt% alkali-activator and 2.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 5:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 19min, be sealed in 80 DEG C of maintenance 6h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 12
Aluminium lime-ash and water are pressed into 4.5:1 Wet blend-milling 43min, with the sieve screening removal coarse fodder of aperture 0.8mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 0.8mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 8%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 50wt%, blast furnace iron powder 17wt%, flyash 33wt%, three
The sum of be 100%.Additional 17wt% alkali-activator and 2.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 4.67:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials are mixed
Conjunction uniformly obtains slurry, is injected into mold and carries out polymerization reaction with after blistering reaction 21min, is sealed in 33 DEG C of maintenance 8h, demoulds
After obtain foam geo-polymer cementitious material.
Embodiment 13
Aluminium lime-ash and water are pressed into 4:1 Wet blend-milling 36min, with the sieve screening removal coarse fodder of aperture 0.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.9mm, be separated by solid-liquid separation, dry after obtain water content be 3% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 55wt%, blast furnace iron powder 18wt%, flyash 27wt%, three it
Be 100%.Additional 20wt% alkali-activator and 3.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 4:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 23min, be sealed in 37 DEG C of maintenance 10h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 14
Aluminium lime-ash and water are pressed into 3.5:1 Wet blend-milling 29min, with the sieve screening removal coarse fodder of aperture 0.8mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 0.8mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 10%.After dry
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 52wt%, blast furnace iron powder 14wt%, flyash 34wt%, three
The sum of person is 100%.Additional 17wt% alkali-activator and 2wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 1.13:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials are mixed
Conjunction uniformly obtains slurry, is injected into mold and carries out polymerization reaction with after blistering reaction 25min, is sealed in 41 DEG C of maintenance 12h, demoulds
After obtain foam geo-polymer cementitious material.
Embodiment 15
Aluminium lime-ash and water are pressed into 3:1 Wet blend-milling 22min, with the sieve screening removal coarse fodder of aperture 0.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.9mm, be separated by solid-liquid separation, dry after obtain water content be 6% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 54wt%, blast furnace iron powder 17wt%, flyash 29wt%, three it
Be 100%.Additional 18wt% alkali-activator and 1.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 2.6:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 27min, 83 DEG C of maintenance 14h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 16
Aluminium lime-ash and water are pressed into 1:1 Wet blend-milling 15min, with the sieve screening removal coarse fodder of aperture 1.1mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.1mm, be separated by solid-liquid separation, dry after obtain water content be 7% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 52wt%, blast furnace iron powder 18wt%, flyash 30wt%, three it
Be 100%.Additional 19wt% alkali-activator and 3wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 1.71:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 29min, be sealed in 49 DEG C of maintenance 16h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 17
Aluminium lime-ash and water are pressed into 10:1 Wet blend-milling 120min, with the sieve screening removal coarse fodder of aperture 1.2mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.2mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 8%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 59wt%, blast furnace iron powder 14wt%, flyash 27wt%, three
The sum of be 100%.Additional 10wt% alkali-activator and 3.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 1.5:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials are mixed
Conjunction uniformly obtains slurry, is injected into mold and carries out polymerization reaction with after blistering reaction 12min, is sealed in 53 DEG C of maintenance 18h, demoulds
After obtain foam geo-polymer cementitious material.
Embodiment 18
Aluminium lime-ash and water are pressed into 9:1 Wet blend-milling 108min, with the sieve screening removal coarse fodder of aperture 1.3mm, obtain grain
Diameter no more than the aqueous aluminium lime-ash of 1.3mm, be separated by solid-liquid separation, dry after obtain the aluminium lime-ash that water content is 9%.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 57wt%, blast furnace iron powder 16wt%, flyash 27wt%, three
The sum of be 100%.Additional 10wt% alkali-activator and 2.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 2.33:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials are mixed
Conjunction uniformly obtains slurry, is injected into mold and carries out polymerization reaction with after blistering reaction 14min, is sealed in 57 DEG C of maintenance 20h, demoulds
After obtain foam geo-polymer cementitious material.
Embodiment 19
Aluminium lime-ash and water are pressed into 8:1 Wet blend-milling 96min, with the sieve screening removal coarse fodder of aperture 1.4mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.4mm, be separated by solid-liquid separation, dry after obtain water content be 7% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 55wt%, blast furnace iron powder 17wt%, flyash 28wt%, three it
Be 100%.Additional 13wt% alkali-activator and 2.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 1.6:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 16min, 90 DEG C of maintenance 22h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 20
Aluminium lime-ash and water are pressed into 7:1 Wet blend-milling 84min, with the sieve screening removal coarse fodder of aperture 1.5mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.5mm, be separated by solid-liquid separation, dry after obtain water content be 2% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 56wt%, blast furnace iron powder 18wt%, flyash 26wt%, three it
Be 100%.Additional 16wt% alkali-activator and 3.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 1.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 18min, 65 DEG C of maintenances are sealed in for 24 hours, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 21
Aluminium lime-ash and water are pressed into 6:1 Wet blend-milling 72min, with the sieve screening removal coarse fodder of aperture 1.3mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.3mm, be separated by solid-liquid separation, dry after obtain water content be 4% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 53wt%, blast furnace iron powder 10wt%, flyash 37wt%, three it
Be 100%.Additional 19wt% alkali-activator and 1wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 2.17:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 20min, be sealed in 69 DEG C of maintenance 13h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 22
Aluminium lime-ash and water are pressed into 5:1 Wet blend-milling 60min, with the sieve screening removal coarse fodder of aperture 1.8mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.8mm, be separated by solid-liquid separation, dry after obtain water content be 8% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 57wt%, blast furnace iron powder 11wt%, flyash 32wt%, three it
Be 100%.Additional 20wt% alkali-activator and 1.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 1.22:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 22min, 95 DEG C of maintenance 15h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 23
Aluminium lime-ash and water are pressed into 4:1 Wet blend-milling 48min, with the sieve screening removal coarse fodder of aperture 1.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.9mm, be separated by solid-liquid separation, dry after obtain water content be 6% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 58wt%, blast furnace iron powder 12wt%, flyash 30wt%, three it
Be 100%.Additional 9wt% alkali-activator and 3wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 0.5:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 24min, be sealed in 32 DEG C of maintenance 17h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 24
Aluminium lime-ash and water are pressed into 3:1 Wet blend-milling 36min, with the sieve screening removal coarse fodder of aperture 2mm, obtain partial size not
The aluminium lime-ash aqueous greater than 2mm, be separated by solid-liquid separation, dry after obtain water content be 5% aluminium lime-ash.By the aluminium lime-ash after drying
With blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 56wt%, blast furnace iron powder 17wt%, flyash 27wt%, the sum of three are
100%.Additional 22wt% alkali-activator and 3.6wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 0.69:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 26min, be sealed in 38 DEG C of maintenance 19h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 25
Aluminium lime-ash and water are pressed into 2:1 Wet blend-milling 24min, with the sieve screening removal coarse fodder of aperture 1.1mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.1mm, be separated by solid-liquid separation, dry after obtain water content be 7% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 52wt%, blast furnace iron powder 18wt%, flyash 30wt%, three it
Be 100%.Additional 16wt% alkali-activator and 3.2wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 1.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 28min, 44 DEG C of maintenance 21h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 26
Aluminium lime-ash and water are pressed into 6:1 Wet blend-milling 22min, with the sieve screening removal coarse fodder of aperture 1.3mm, obtain partial size
The aluminium lime-ash aqueous no more than 1.3mm, be separated by solid-liquid separation, dry after obtain water content be 4% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 59wt%, blast furnace iron powder 10wt%, flyash 31wt%, three it
Be 100%.Additional 20wt% alkali-activator and 5wt% foam stabilizer, alkali-activator are that sodium hydroxide is with waterglass ratio
The mixture of 4:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials are uniformly mixed
Slurry is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 30min, be sealed in 100 DEG C of maintenance 23h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 27
Aluminium lime-ash and water are pressed into 5:1 Wet blend-milling 20min, with the sieve screening removal coarse fodder of aperture 0.8mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.8mm, be separated by solid-liquid separation, dry after obtain water content be 8% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 53wt%, blast furnace iron powder 11wt%, flyash 36wt%, three it
Be 100%.Additional 10wt% alkali-activator and 3.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 0.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 15min, 56 DEG C of maintenance 17h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Embodiment 28
Aluminium lime-ash and water are pressed into 4:1 Wet blend-milling 18min, with the sieve screening removal coarse fodder of aperture 0.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.9mm, be separated by solid-liquid separation, dry after obtain water content be 3% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 51wt%, blast furnace iron powder 12wt%, flyash 37wt%, three it
Be 100%.Additional 12wt% alkali-activator and 2.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 5:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing is equal
It is even to obtain slurry, it is injected into mold and carries out polymerization reaction with after blistering reaction 25min, be sealed in 62 DEG C of maintenance 18h, after demoulding
To foam geo-polymer cementitious material.
Embodiment 29
Aluminium lime-ash and water are pressed into 3:1 Wet blend-milling 16min, with the sieve screening removal coarse fodder of aperture 0.8mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.8mm, be separated by solid-liquid separation, dry after obtain water content be 10% aluminium lime-ash.After drying
Aluminium lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 52wt%, blast furnace iron powder 15wt%, flyash 33wt%, three
The sum of be 100%.Additional 17wt% alkali-activator and 2.6wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass
Than the mixture for 4.67:1, foam stabilizer is the mixture that neopelex is 1:1 with triethanolamine.Above-mentioned raw materials are mixed
Conjunction uniformly obtains slurry, is injected into mold and carries out polymerization reaction with after blistering reaction 30min, is sealed in 68 DEG C of maintenance 19h, demoulds
After obtain foam geo-polymer cementitious material.
Embodiment 30
Aluminium lime-ash and water are pressed into 2:1 Wet blend-milling 15min, with the sieve screening removal coarse fodder of aperture 0.9mm, obtain partial size
The aluminium lime-ash aqueous no more than 0.9mm, be separated by solid-liquid separation, dry after obtain water content be 6% aluminium lime-ash.By the aluminium after drying
Lime-ash and blast furnace iron powder, flyash proportion, wherein aluminium lime-ash 56wt%, blast furnace iron powder 13wt%, flyash 31wt%, three it
Be 100%.Additional 14wt% alkali-activator and 3.4wt% foam stabilizer, alkali-activator are sodium hydroxide and waterglass ratio
For the mixture of 3.67:1, the mixture that foam stabilizer is neopelex and triethanolamine is 1:1.Above-mentioned raw materials mixing
Slurry uniformly is obtained, mold is injected into and carries out polymerization reaction with after blistering reaction 17min, 74 DEG C of maintenance 20h are sealed in, after demoulding
Obtain foam geo-polymer cementitious material.
Claims (6)
1. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material, which is characterized in that located aluminium lime-ash in advance
Aluminium lime-ash after pretreatment is mixed with blast furnace iron powder and flyash to remove saline flux impurity, adds foam stabilizer and alkali by reason
Property exciting agent be mixed into slurry, foamed, molding, maintenance obtain foam geo-polymer cementitious material.
2. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material according to claim 1, which is characterized in that
The pretreatment of aluminium lime-ash includes wet-milling, screening, separation of solid and liquid, drying；Specific step is as follows:
(1) 15min~120min, solid-to-liquid ratio 1:1~10:1 wet-milling: are ground using water-wet；
(2) sieve: aluminium lime-ash via hole diameter≤2mm sieve after wet-milling carries out screening removal coarse fodder；
(3) it is separated by solid-liquid separation；
(4) dry: aluminium lime-ash water content≤10wt% after drying removes saline flux impurity.
3. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material according to claim 2, which is characterized in that
Aluminium lime-ash, blast furnace iron powder and flyash three's mass ratio are as follows: aluminium lime-ash 50wt%~60wt%, ground granulated blast furnace slag after pretreatment
10wt%~20wt%, flyash 20wt%~40wt%, three's total amount are 100wt%.
4. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material according to claim 1, which is characterized in that
The alkali-activator is the mixture of sodium hydroxide and waterglass, and sodium hydroxide and waterglass mass ratio are 0.5:1~5:1；
The additional amount of alkali-activator is 10wt%~20wt% of aluminium lime-ash, ground granulated blast furnace slag and flyash total amount.
5. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material according to claim 1, which is characterized in that
The foam stabilizer is neopelex and triethanolamine mixture, neopelex and triethanolamine mass ratio
For 1:1, foam stabilizer additional amount is 1wt%~5wt% of aluminium lime-ash, ground granulated blast furnace slag and flyash total amount.
6. a kind of method that aluminium lime-ash prepares foam geo-polymer cementitious material according to claim 1, which is characterized in that
Slurry is injected into after mold carries out polymerization reaction and blistering reaction 10min~30min and is sealed, then at 20 DEG C~100 DEG C
Maintenance 2h~obtain foam geo-polymer cementitious material for 24 hours, after demoulding.
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| CN110642559A (en) * | 2019-10-25 | 2020-01-03 | 湖北工业大学 | Coal ash geopolymer foam concrete and preparation method thereof |
| CN112830717A (en) * | 2021-01-18 | 2021-05-25 | 北京科技大学 | Method for preparing foamed geopolymer from silicomanganese slag |
| CN115215592A (en) * | 2022-06-29 | 2022-10-21 | 广东至道先进土木工程材料技术研究有限公司 | Refractory concrete and preparation method thereof |
| CN115382879A (en) * | 2022-09-30 | 2022-11-25 | 贵州星河环境技术有限公司 | Method and equipment for innocent treatment of overhaul residues and fly ash |
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| CN112341017B (en) * | 2020-10-30 | 2022-04-15 | 北京科技大学 | Method for preparing high-strength geopolymer cementing material from aluminum ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110642559A (en) * | 2019-10-25 | 2020-01-03 | 湖北工业大学 | Coal ash geopolymer foam concrete and preparation method thereof |
| CN110642559B (en) * | 2019-10-25 | 2022-02-11 | 湖北工业大学 | Coal ash geopolymer foam concrete and preparation method thereof |
| CN112830717A (en) * | 2021-01-18 | 2021-05-25 | 北京科技大学 | Method for preparing foamed geopolymer from silicomanganese slag |
| CN115215592A (en) * | 2022-06-29 | 2022-10-21 | 广东至道先进土木工程材料技术研究有限公司 | Refractory concrete and preparation method thereof |
| CN115215592B (en) * | 2022-06-29 | 2023-09-08 | 广东至道先进土木工程材料技术研究有限公司 | Refractory concrete and preparation method thereof |
| CN115382879A (en) * | 2022-09-30 | 2022-11-25 | 贵州星河环境技术有限公司 | Method and equipment for innocent treatment of overhaul residues and fly ash |
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