LU501518B1 - Preparation process of alkali activated cementitious material for waste incineration bottom ash treatment - Google Patents
Preparation process of alkali activated cementitious material for waste incineration bottom ash treatment Download PDFInfo
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- LU501518B1 LU501518B1 LU501518A LU501518A LU501518B1 LU 501518 B1 LU501518 B1 LU 501518B1 LU 501518 A LU501518 A LU 501518A LU 501518 A LU501518 A LU 501518A LU 501518 B1 LU501518 B1 LU 501518B1
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- bottom ash
- waste incineration
- alkali
- solid waste
- municipal solid
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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
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
-
- 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
Abstract
The present invention discloses a preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment, including the following steps: S1: performing calcination and defoaming pretreatment on municipal solid waste incineration bottom ash; S2: performing crushing pretreatment on the municipal solid waste incineration bottom ash; S3: performing ball milling pretreatment on the municipal solid waste incineration bottom ash; S4: performing alkali activator solution preparation; S5: performing alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash; S6: performing alkali activated cementitious material slurry production; S7: producing an alkali activated cementitious material test piece; and S8: performing steam curing on the alkali activated cementitious material test piece. In the preparation process of the present invention, industrial waste is used as a main raw material to prepare an alkali activated material, which gradually replaces cement materials, thereby reducing the requirements for the cement materials, and not only alleviating the excessive consumption of limestone, clay, and energy in cement production, but also alleviating the problems of high energy consumption and high pollution caused by cement production. In addition, environmental pollution problems caused by a lot of accumulation of industrial solid waste may be gradually eliminated.
Description
PREPARATION PROCESS OF ALKALI ACTIVATED CEMENTITIOUS 7507518
TECHNICAL FIELD The present invention relates to a preparation process of an alkali activated cementitious material, and in particular, to a preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment.
BACKGROUND The reduction and harmless treatment of municipal solid waste in China is mainly based on incineration and landfill. The products of municipal solid waste incineration (MSWI) are mainly classified into two categories: one is fly ash, which accounts for about 20% of the total, and the other is bottom ash, which accounts for about 80% of the total. The bottom ash is usually collected from the bottom of a combustion boiler and consists of different types of large particles (< 45 mm), including molten slag, glass, stones, small metal fragments, and the like. The bottom ash is mainly composed of high boiling point elements, such as Si** and Al**. Therefore, the bottom ash is a solid waste that can be directly recycled.
The accumulation of the municipal solid waste incineration bottom ash also brings pollution to the atmospheric environment and water resources, and becomes a breeding ground for a large number of pathogenic microorganisms and pests, which causes great potential harm.
In addition, the landfill treatment of the municipal solid waste incineration bottom ash not only wastes a lot of human and material resources, but also causes severe pollution to the underground environment. The landfill treatment of the municipal solid waste incineration bottom ash is neither scientific nor economical. Therefore, multi-channel and large-scale safe consumption and resource recycling of the municipal solid waste incineration bottom ash are extremely urgent.
To resolve the above problems, a process for producing an alkali activated cementitious material by applying municipal solid waste incineration bottom ash is provided, which can gradually replace cement materials, thereby reducing the requirements for the cement materials, and not only alleviating the excessive consumption of limestone, clay, and energy in cement production, but also alleviating the problems of high energy consumption and high pollution caused by cement production.
SUMMARY An objective of the present invention is to provide a preparation process of an alkali 1 activated cementitious material for municipal solid waste incineration bottom ash treatment.
In LU501518 the preparation process of the present invention, industrial waste is used as a main raw material to prepare an alkali activated material, which can gradually replace cement materials, thereby reducing the requirements for the cement materials, and not only alleviating the excessive consumption of limestone, clay, and energy in cement production, but also alleviating the problems of high energy consumption and high pollution caused by cement production.
In addition, the industrial waste may be changed into valuable materials, which gradually eliminates various environmental pollution problems caused by a lot of accumulation of industrial solid waste, thereby generating immeasurable environmental benefits and social benefits.
The particle fineness of municipal solid waste incineration bottom ash obtained after ball milling is better than that of cement, and a specific surface area of the municipal solid waste incineration bottom ash obtained after ball milling is much better than that of municipal solid waste incineration bottom ash before ball milling, which significantly improves reaction activity of the municipal solid waste incineration bottom ash.
Through calcining and melting pretreatment and alkali aging pretreatment, a phenomenon of bottom ash foaming and expanding when exposed to alkali is completely eliminated.
Through the step-by-step calcium addition effect of slag powders and hydrated lime powders, and the silicon addition effect of liquid sodium silicate, a mechanical property of the bottom ash alkali activated material is significantly enhanced.
The objective of the present invention may be achieved by the following technical solutions: A preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment is provided, and the preparation process includes the following steps: S1: performing calcination and defoaming pretreatment on municipal solid waste incineration bottom ash calcining municipal solid waste incineration bottom ash particles in a muffle furnace, where a calcination temperature is 1050 to 1100°C, and the calcining lasts for 10 to 30 minutes at a constant temperature; S2: performing crushing pretreatment on the municipal solid waste incineration bottom ash crushing, by using a jaw crusher, municipal solid waste incineration bottom ash that has been calcined and melted into blocks, and crushing the municipal solid waste incineration bottom ash into small block-shaped particles with a diameter of 4.53 to 5.03 mm; S3: performing ball milling pretreatment on the municipal solid waste incineration bottom 2 ash LU501518 performing ball milling on the small block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 15 to 60 minutes by using a ball mill; S4: performing alkali activator solution preparation mixing sodium hydroxide and water to prepare an alkali activator solution, where a weight ratio of sodium hydroxide to water is (1:15) to (1:5); S5: performing alkali aging and defoaming pretreatment for municipal solid waste incineration bottom ash mixing the bottom ash treated in S2 and S3 with the alkali activator solution in S4, performing uniform mixing to form a slurry, and performing alkali aging pretreatment after standing for 1 to 1 hours, where a weight ratio of the alkali activator solution to the bottom ash is (3:1) to (3:5); S6: performing alkali activated cementitious material slurry production first adding slag powders and hydrated lime powders into a bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 260 to 320 r/min and a stirring time of 1 to 2 min; and then adding liquid sodium silicate and sand into the bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 260 to 320 r/min and a stirring time of 0.5 to 1 min, where a weight ratio of the slag powders to the bottom ash slurry is (1:11) to (3:1), a weight ratio of the hydrated lime powders to the bottom ash slurry is (1:100) to (1:10), a weight ratio of the liquid sodium silicate to the bottom ash slurry is (1:10) to (1:3), and a weight ratio of the sand to the bottom ash slurry is (10:1) to (2:1); S7: producing an alkali activated cementitious material test piece injecting the alkali activated cementitious material slurry into a mold for vibration molding, and performing curing at a normal temperature until demolding, to obtain the alkali activated cementitious material test piece; and S8: performing steam curing on the alkali activated cementitious material test piece with a steam curing temperature of 40 to 60°C and a steam curing time of 5 to 15 h.
Beneficial effects of the present invention are as follows:
1. In a preparation process of the present invention, industrial waste is used as a main raw material to prepare an alkali activated material, which can gradually replace cement materials, thereby reducing the requirements for the cement materials, and not only alleviating the excessive consumption of limestone, clay, and energy in cement production, but also alleviating the problems of high energy consumption and high pollution caused by cement 3 production. In addition, the industrial waste may be changed into valuable materials, which LUS01518 gradually eliminates various environmental pollution problems caused by a lot of accumulation of industrial solid waste, thereby generating immeasurable environmental benefits and social benefits.
2. In the present invention, by performing calcining and melting pretreatment and alkali aging pretreatment on bottom ash, a deficiency of bottom ash foaming and expanding when exposed to alkali is completely eliminated, preparing a high-strength bottom ash alkali activated material, and significantly broadening an application range of the bottom ash alkali activated material.
3. In the present invention, through the step-by-step calcium addition effect of slag powders and hydrated lime powders, and the silicon addition effect of liquid sodium silicate, the compatible coupling and cooperative reinforcement effects between multi-source industrial solid wastes are fully exerted, thereby significantly improving polymerization reaction activity of the bottom ash, and improving the preparation process of a bottom ash alkali activated material with high strength and excellent construction performance.
DETAILED DESCRIPTION The following clearly and completely describes the technical solutions in embodiments of the present invention in detail. Apparently, the described embodiments are merely some rather than all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without going through any creative work shall fall within the scope of protection of the present invention.
Embodiment 1 A preparation process of an alkali activated cementitious material for waste treatment is provided, and the preparation process includes the following steps: S1: Perform calcination and defoaming pretreatment on municipal solid waste incineration bottom ash Calcine municipal solid waste incineration bottom ash particles in a muffle furnace, where a calcination temperature is 1050°C, and the calcining lasts for 10 minutes at a constant temperature.
S2: Perform crushing pretreatment on the municipal solid waste incineration bottom ash Crush the municipal solid waste incineration bottom ash by using a jaw crusher, and crush the municipal solid waste incineration bottom ash into block-shaped particles with a diameter less than 4.75 mm.
S3: Perform ball milling pretreatment on the municipal solid waste incineration bottom 4 ash LU501518 Perform ball milling on the block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 30 minutes by using the ball mill.
S4: Perform alkali activator solution preparation Mix sodium hydroxide and water to prepare the alkali activator solution, where a weight ratio of sodium hydroxide to water is 1:15. S5: Perform alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash Mix the bottom ash treated in S2 and S3 with the alkali activator solution in S4, perform uniform mixing to form a slurry, and perform alkali aging pretreatment after standing for 1 hours, where a weight ratio of the alkali activator solution to the bottom ash is 3:1. S6: Perform alkali activated cementitious material slurry production First add slag powders and hydrated lime powders into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 260 r/min and a stirring time of 1 min; and then add liquid sodium silicate and sand into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 260 r/min and a stirring time of 0.5 min, where a weight ratio of the slag powders to the bottom ash slurry is 1:11, a weight ratio of the hydrated lime powders to the bottom ash slurry is 1:10, a weight ratio of the liquid sodium silicate to the bottom ash slurry is 1:10, and a weight ratio of the sand to the bottom ash slurry is 2:1. S7: Produce an alkali activated cementitious material test piece Inject the alkali activated cementitious material slurry into a mold for vibration molding, and perform curing at a normal temperature until demolding, to obtain the alkali activated cementitious material test piece.
S8: Perform steam curing on the alkali activated cementitious material test piece with a steam curing temperature of 40°C and a steam curing time of 5 h.
Embodiment 2 A preparation process of an alkali activated cementitious material for waste treatment is provided, and the preparation process includes the following steps: S1: Perform calcination and defoaming pretreatment on municipal solid waste incineration bottom ash Calcine municipal solid waste incineration bottom ash particles in a muffle furnace, where a calcination temperature is 1030°C, and the calcining lasts for 15 minutes at a constant temperature. 5
S2: Perform crushing pretreatment on the municipal solid waste incineration bottom ash LU501518 Crush the municipal solid waste incineration bottom ash by using a jaw crusher, and crush the municipal solid waste incineration bottom ash into block-shaped particles with a diameter less than 4.75 mm.
S3: Perform ball milling pretreatment on the municipal solid waste incineration bottom ash Perform ball milling on the block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 30 minutes by using a ball mill.
S4: Perform alkali activator solution preparation Mix sodium hydroxide and water to prepare the alkali activator solution, where a weight ratio of sodium hydroxide to water is 1:10. S5: Perform alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash Mix the bottom ash treated in S2 and S3 with the alkali activator solution in S4, perform uniform mixing to form a slurry, and perform alkali aging pretreatment after standing for 2 hours, where a weight ratio of the alkali activator solution to the bottom ash is 1:1. S6: Perform alkali activated cementitious material slurry production First add slag powders and hydrated lime powders into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 300 r/min and a stirring time of 1.5 min; and then add liquid sodium silicate and sand into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 300 r/min and a stirring time of 0.8 min, where a weight ratio of the slag powders to the bottom ash slurry is 2:1, a weight ratio of the hydrated lime powders to the bottom ash slurry is 1:50, a weight ratio of the liquid sodium silicate to the bottom ash slurry is 1:5, and a weight ratio of the sand to the bottom ash slurry is 5:1. S7: Produce an alkali activated cementitious material test piece Inject the alkali activated cementitious material slurry into a mold for vibration molding, and perform curing at a normal temperature until demolding, to obtain the alkali activated cementitious material test piece.
S8: Perform steam curing on the alkali activated cementitious material test piece with a steam curing temperature of 50°C and a steam curing time of 10 h.
Embodiment 3 A preparation process of an alkali activated cementitious material for waste treatment is provided, and the preparation process includes the following steps: 6
S1: Perform calcination and defoaming pretreatment on the municipal solid waste LUS01518 incineration bottom ash Calcine municipal solid waste incineration bottom ash particles in a muffle furnace, where a calcination temperature is 1100°C, and the calcining lasts for 30 minutes at a constant temperature.
S2: Perform crushing pretreatment on the municipal solid waste incineration bottom ash Crush the municipal solid waste incineration bottom ash by using a jaw crusher, and crush the municipal solid waste incineration bottom ash into block-shaped particles with a diameter less than 5.03 mm.
S3: Perform ball milling pretreatment on the municipal solid waste incineration bottom ash Perform ball milling on the block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 60 minutes by using a ball mill.
S4: Perform alkali activator solution preparation Mix sodium hydroxide and water to prepare an alkali activator solution, where a weight ratio of sodium hydroxide to water is 1:5. S5: Perform alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash Mix the bottom ash treated in S2 and S3 with the alkali activator solution in S4, perform uniform mixing to form a slurry, and perform alkali aging pretreatment after standing for 3 hours, where a weight ratio of the alkali activator solution to the bottom ash is 1:5. S6: Perform alkali activated cementitious material slurry production First add slag powders and hydrated lime powders into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 320 r/min and a stirring time of 2 min; and then add liquid sodium silicate and sand into the bottom ash slurry obtained after standing and aging in S5, and perform high-speed stirring with a stirring speed of 320 r/min and a stirring time of 1 min, where a weight ratio of the slag powders to the bottom ash slurry is 3:1, a weight ratio of the hydrated lime powders to the bottom ash slurry is 1:100, a weight ratio of the liquid sodium silicate to the bottom ash slurry is 1:3, and a weight ratio of the sand to the bottom ash slurry is 10:1. S7: Produce an alkali activated cementitious material test piece Inject the alkali activated cementitious material slurry into a mold for vibration molding, and perform curing at a normal temperature until demolding, to obtain the alkali activated cementitious material test piece. 7
S8: Perform steam curing on the alkali activated cementitious material test piece with a LU501518 steam curing temperature of 60°C and a steam curing time of 15 h.
In Embodiment 1 to Embodiment 3, according to experimental tests, recorded results are as follows: © Comprossivestrength/MPa FlexuralstrengthMPa Testpiece Without Without Without Steam Without Without Without Steam number steam steam Steam curing steam steam steam curing curing 3d curing 28d eo after Sh curing 3d curing 28d curing 60d after 5 h control aroun 16.3 489 557 51.2 2.4 6.5 7.4 6.3 Embodiment 1 39.4 57.6 63.5 59.4 6.7 10.4 12.7 11.3 Embodiment 2 8.8 13.4 15.6 13.9 1.9 2.6 3.2 2.7 Embodiment3 19.4 27.4 40.5 35.4 4.3 5.5 8.2 According to the recorded results of the above embodiments, it can be seen that in Embodiments 1-3, the compressive strength and flexural strength in Embodiment 1 are significantly higher than those of the cement control group, and a ratio of the flexural strength to the compressive strength of the alkali activated material can reach 1/5, which is much higher than a ratio 1/8 of the flexural strength to the compressive strength of the cement control group, which indicates that the alkali activated material has better flexural properties, and the alkali activated material has the characteristics of obvious early strength.
Although the compressive strength and flexural strength of the alkali activated material in Embodiment 2 are significantly reduced, the alkali activated material is prepared under a condition of low activator and mineral additives, which can significantly reduce the preparation costs of the alkali activated material.
The compressive strength and flexural strength of the alkali activated material in Embodiment 3 are between those in Embodiments 1 and 2, which indicates that a mechanical property of the alkali activated material may be adjusted by changing a mix proportion, to adjust a strength property.
In the descriptions of this specification, a description of a reference term such as "an embodiment", "an example", or "a specific example" means that a specific feature, structure, material, or characteristic that is described with reference to the embodiment or the example is included in at least one embodiment or example of the present invention.
In this specification, exemplary descriptions of the foregoing terms do not necessarily refer to the same embodiment or example.
In addition, the described specific features, structures, materials, or characteristics may be combined in a proper manner in any one or more of the embodiments or examples.
The foregoing displays and describes basic principles, main features of the present 8 invention and advantages of the present invention.
A person skilled in the art may understand LU501518 that the present invention is not limited in the foregoing embodiments.
Descriptions in the embodiments and this specification only illustrate the principles of the present invention.
Various modifications and improvements are made in the present invention without departing from the spirit and the scope of the present invention, and these modifications and improvements shall fall within the protection scope of the present invention. 9
Claims (4)
1. À preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment, wherein the preparation process comprises the following steps: S1: performing calcination and defoaming pretreatment on municipal solid waste incineration bottom ash calcining municipal solid waste incineration bottom ash particles in a muffle furnace, wherein a calcination temperature is 1050 to 1100°C, and the calcining lasts for 10 to 30 minutes at a constant temperature; S2: performing crushing pretreatment on the municipal solid waste incineration bottom ash crushing, by using a jaw crusher, municipal solid waste incineration bottom ash that has been calcined and melted into blocks, and crushing the municipal solid waste incineration bottom ash into small block-shaped particles with a diameter of 4.53 to 5.03 mm; S3: performing ball milling pretreatment on the municipal solid waste incineration bottom ash performing ball milling on the small block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 15 to 60 minutes by using a ball mill; S4: performing alkali activator solution preparation mixing sodium hydroxide and water to prepare an alkali activator solution, wherein a weight ratio of sodium hydroxide to water is (1:15) to (1:5); S5: performing alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash mixing the bottom ash treated in S2 and S3 with the alkali activator solution in S4, performing uniform mixing to form a slurry, and performing alkali aging pretreatment after standing for 1 to 3 hours, wherein a weight ratio of the alkali activator solution to the bottom ash is (1:5) to (3:1); S6: performing alkali activated cementitious material slurry production first adding slag powders and hydrated lime powders into a bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 260 to 320 r/min and a stirring time of 1 to 2 min; and then adding liquid sodium silicate and sand into the bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 260 to 320 r/min and a stirring time of 0.5 to 1 min, wherein a weight ratio of the slag powders to the bottom ash slurry is (1:11) to (3:1), a weight ratio of the 10 hydrated lime powders to the bottom ash slurry is (1:100) to (1:10), a weight ratio of the liquid LUS01518 sodium silicate to the bottom ash slurry is (1:10) to (1:3), and a weight ratio of the sand to the bottom ash slurry is (2:1) to (10:1); S7: producing an alkali activated cementitious material test piece injecting the alkali activated cementitious material slurry into a mold for vibration molding, and performing curing at a normal temperature until demolding, to obtain the alkali activated cementitious material test piece; and S8: performing steam curing on the alkali activated cementitious material test piece with a steam curing temperature of 40 to 60°C and a steam curing time of 5 to 15 h.
2. The preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment according to claim 1, wherein the preparation process comprises the following steps: S1: performing calcination and defoaming pretreatment on the municipal solid waste incineration bottom ash calcining the municipal solid waste incineration bottom ash particles in the muffle furnace, wherein a calcination temperature is 1030°C, and the calcining lasts for 15 minutes at a constant temperature; S2: performing crushing pretreatment on the municipal solid waste incineration bottom ash crushing the municipal solid waste incineration bottom ash by using the jaw crusher, and crushing the municipal solid waste incineration bottom ash into block-shaped particles with a diameter less than 4.75 mm; S3: performing ball milling pretreatment on the municipal solid waste incineration bottom ash performing ball milling on the block-shaped particles of the municipal solid waste incineration bottom ash in S2 for 30 minutes by using the ball mill; S4: performing alkali activator solution preparation mixing sodium hydroxide and water to prepare the alkali activator solution, wherein the weight ratio of sodium hydroxide to water is 1:10; S5: performing alkali aging and defoaming pretreatment on the municipal solid waste incineration bottom ash mixing the bottom ash treated in S2 and S3 with the alkali activator solution in S4, performing uniform mixing to form the slurry, and performing alkali aging pretreatment after standing for 2 hours, wherein the weight ratio of the alkali activator solution to the bottom ash 11 is 1:1; LU501518 S6: performing alkali activated cementitious material slurry production first adding the slag powders and the hydrated lime powders into the bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 300 r/min and a stirring time of 1.5 min; and then adding the liquid sodium silicate and the sand into the bottom ash slurry obtained after standing and aging in S5, and performing high-speed stirring with a stirring speed of 300 r/min and a stirring time of 0.8 min, wherein the weight ratio of the slag powders to the bottom ash slurry is 2:1, the weight ratio of the hydrated lime powders to the bottom ash slurry is 1:50, the weight ratio of the liquid sodium silicate to the bottom ash slurry is 1:5, and the weight ratio of the sand to the bottom ash slurry is 5:1; S7: producing the alkali activated cementitious material test piece injecting the alkali activated cementitious material slurry into the mold for vibration molding, and performing curing at the normal temperature until demolding, to obtain the alkali activated cementitious material test piece; and S8: performing steam curing on the alkali activated cementitious material test piece with a steam curing temperature of 50°C and a steam curing time of 10 h.
3. The preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment according to claim 1 or 2, wherein the municipal solid waste incineration bottom ash in S1 is calcined under a condition of O2.
4. The preparation process of an alkali activated cementitious material for waste incineration bottom ash treatment according to claim 1 or 2, wherein the liquid sodium silicate in S6 is sodium water glass with a modulus of 3.0 and a Baumé scale of 37 degrees; and the sand in S6 is river sand with continuous gradation and a fineness modulus of 2.8.
12
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