CN113983466A - Method for treating fly ash by utilizing household garbage-silicon-aluminum material in cooperation with incineration ash - Google Patents
Method for treating fly ash by utilizing household garbage-silicon-aluminum material in cooperation with incineration ash Download PDFInfo
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- 239000010881 fly ash Substances 0.000 title claims abstract description 67
- 239000002956 ash Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 23
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- 239000002245 particle Substances 0.000 claims description 16
- 235000019353 potassium silicate Nutrition 0.000 claims description 15
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- 239000011812 mixed powder Substances 0.000 claims description 12
- 239000003513 alkali Substances 0.000 claims description 9
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000002195 synergetic effect Effects 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 239000012190 activator Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 238000012844 infrared spectroscopy analysis Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004445 quantitative analysis Methods 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract description 11
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 150000002500 ions Chemical class 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 239000002910 solid waste Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002920 hazardous waste Substances 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000007725 thermal activation Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000004137 mechanical activation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/30—Solid combustion residues, e.g. bottom or flyash
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of waste resource utilization, and particularly relates to a method for treating fly ash by utilizing household garbage-alumino-silicate materials to cooperate with incineration ash. The invention realizes the solidification treatment of heavy metal ions in solid waste at low cost and high efficiency, solves the problems of resource utilization of household garbage incineration ash and harmless treatment of incineration fly ash, achieves the purposes of changing waste into valuable and treating waste with waste, and has remarkable social benefit and economic benefit.
Description
Technical Field
The invention belongs to the technical field of waste resource utilization, and particularly relates to a method for treating fly ash by utilizing household garbage-alumino-silicate materials in cooperation with incineration ash.
Background
The fly ash is the general name of bottom ash settled at the bottom of garbage incineration plants, garbage incineration flue gas emission and purification systems, traps and flues and chimneys, and accounts for 2-3% of the total weight of the garbage. As the fly ash contains dioxin and heavy metals, the national records of dangerous wastes (2021 edition) lists the fly ash as dangerous wastes, and codes 772-002-18. According to relevant regulations, the fly ash must be solidified/stabilized, after the treatment reaches the standard, the fly ash can be sent to a landfill site for partition landfill, and the market price for treating the fly ash is up to 3000 yuan/ton.
Widely used today for the solidification/stabilization treatment of fly ash are cement, lime and glass based solidification materials. Although these materials have certain effects in the curing/stabilizing treatment of toxic heavy metal ions, the defects of poor impermeability, poor acid and alkali resistance, serious compatibilization, loose cured bodies, high cost and the like generally exist.
After incineration of the waste, ash up to 30% of the total weight of the waste is produced in addition to 2% -3% of fly ash. The leaching amount of heavy metals in the ash basically meets the requirements of hazardous waste identification standard-leaching toxicity identification. The ash is not in the national hazardous waste record (2021 edition), and can be directly buried and recycled in policy. Because the ash contains a certain amount of active silicon-aluminum components and presents typical alkaline characteristics, the ash can be theoretically applied to the cement and concrete industries. The application principle of the material is similar to that of 'fly ash' or 'blast furnace slag', and the material is used as a material to be doped into cement or concrete, so that the aim of reducing the product cost is fulfilled. And the ash slag in the actual production process is directly buried. On one hand, the quality of corresponding products cannot be ensured because the ash components and the yield are unstable and the influence on each component of cement or concrete is large; on the other hand, the comprehensive cost of ash considering transportation is often higher than the cost of fly ash. These two points make the ash less advantageous than "fly ash" and other ingredients, so it is often directly landfilled. However, direct disposal of ash requires a large amount of landfill sites, and ions accumulate and enrich with time after landfill, affecting the surrounding environment.
Aiming at the market demand of treating fly ash by the cheap and efficient curing material and the reality that a large amount of ash can not be recycled. The ash is used as a main silicon-aluminum material, and other cheap natural silicon-aluminum materials are matched to prepare a novel environment-friendly curing material under the action of strong alkali for curing the fly ash. The realization of the above aims can solve the problems of resource utilization of the incineration ash of the household garbage and harmless treatment of the incineration fly ash, achieves the purposes of changing waste into valuable and treating waste with waste, and has remarkable social benefit and economic benefit.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a method for treating fly ash by utilizing household garbage-silicon-aluminum materials to cooperate with incineration ash.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a method for disposing fly ash by utilizing household garbage-silicon-aluminum materials in cooperation with incineration ash comprises the following steps:
(1) mixing the domestic garbage with natural silicon-aluminum particles, and then feeding the mixture into a garbage incinerator for incineration;
(2) collecting the incinerated ash and fly ash and sorting to obtain synergistic incinerated ash and fly ash to be solidified;
(3) doping natural silica-alumina particles into the synergistic incineration ash and the fly ash to be solidified again, and obtaining mixed powder after dynamic configuration and grinding;
(4) adding water glass/sodium hydroxide and water into the mixed powder, and uniformly mixing to obtain the gel.
Preferably, the natural alumino-silica particles are tuff and tuff, which are crushed to a particle size of 5mm or less.
Preferably, the mass ratio of the natural silicon-aluminum particles to the household garbage in the step (1) is (2-8):100, the incineration temperature of the garbage incinerator is not lower than 750 ℃, and the incineration time is longer than 0.5 hour.
Preferably, incomplete combustion sundries and waste miscellaneous metals can be obtained in the step (2) through separation, the incomplete combustion sundries are sent back to the feeder to be mixed with the next batch of household garbage to be incinerated again, and the waste miscellaneous metals are used for metal regeneration.
Preferably, the method for dynamic configuration in step (3) includes the following steps:
s1, inputting the component proportions of the synergic incineration ash, the fly ash, the natural alumino-silica particles and the fly ash to be solidified into an Excel working table;
s2, inputting a calculation formula of the index KH, the index A and the index B into an Excel worksheet, wherein the index KH is a lime saturation coefficient, and the calculation formula is as follows:
the index a, describing the ratio of the amount of Si element to Al element species:
the index B, description Na2O oxide and SiO2Mass ratio of oxides:
s3, determining an objective function, and setting the objective function as the maximum value of the sum of the masses of the collaborative incineration ash and the to-be-solidified fly ash;
s4, determining independent variables, and inputting the doping amount of each raw material in an Excel worksheet through changing variable cells;
s5, determining constraint conditions: KH is more than or equal to 0.7 and less than or equal to 1.2, A is more than or equal to 3 and less than or equal to 10, B is more than or equal to 0.20 and less than or equal to 0.40, mCo-incinerated ash+mFly ash+mNatural silicon-aluminium raw material+mFly ash to be solidified≤500；
And S6, planning and solving functions by using Excel software to obtain the doping amount of each variable.
Preferably, the particle size of the mixed powder obtained after grinding in the step (3) is 150-250 meshes.
Preferably, in the step (4), water glass and sodium hydroxide are selected to prepare an alkali activator, and the alkali activator is added into water preheated to 40 ℃, wherein the modulus of the water glass is between 1.1 and 1.4, and the ratio of the water glass to the sodium hydroxide is 1: (0.1-0.6).
Preferably, the mass ratio of the mixed powder, the water glass/sodium hydroxide and the water in the step (4) is 1: 0.6: 0.8.
preferably, the gel in the step (4) is uniformly stirred and discharged into a die, and a hard block can be prepared after shaking, pressing and curing.
Preferably, the ratio of each component in step S1 is obtained by lithofacies analysis, XRF quantitative analysis or infrared spectroscopy analysis.
After the technical scheme is adopted, the method for treating the fly ash by utilizing the domestic garbage-aluminosilico material in cooperation with the incineration ash provided by the invention has the following beneficial effects:
1) the invention adopts the cooperative incineration, the incineration process and the thermal activation process of the gelling property of the natural silicon-aluminum material are synchronously carried out, and the process of activating the gelling property of the silicon-aluminum material by high temperature heat is integrated into the process flow of the waste incineration, so that the cost for building the production line can be reduced, the corresponding administrative approval process can be shortened, and the gelling effect which is stronger than that of a mechanical activation mode can be achieved;
2) the invention realizes the treatment of waste by waste and in-situ solidification, utilizes the ash slag which belongs to solid waste as a main alumino-silicate material, is matched with other cheap natural alumino-silicate materials, and solidifies the fly ash under the action of strong alkali, namely, solidifies heavy metal ions in the fly ash, thereby not only avoiding the production process of 'two-grinding and one-burning' of common portland cement and the risk of transferring and transporting hazardous waste, but also realizing the solidification treatment of the fly ash with low cost and high efficiency;
3) according to the invention, through dynamic configuration, fly ash is efficiently treated, the natural discrete characteristics of various materials are fully considered, and according to the self composition of each batch of materials, the optimal mixing amount of each material is obtained by adopting a dynamic configuration method under the condition that indexes KH, A and B simultaneously meet the conditions, and the best curing effect is finally achieved;
4) the invention selects the volcanic tuff (tuff lava) which is widely distributed in China and has low price as the natural silica-alumina material, and can further reduce the cost investment.
Drawings
FIG. 1 is a technical route diagram of a method for treating fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash of the present invention.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the specific material ratios, process conditions and results thereof described in the examples are illustrative only and should not be taken as limiting the invention as detailed in the claims.
The experimental methods in the following examples are conventional methods unless otherwise specified, and the experimental reagents and materials involved are conventional biochemical reagents and materials unless otherwise specified.
The invention provides a method for treating fly ash by utilizing household garbage-alumino-silicate materials in cooperation with incineration ash, which comprises the following steps as shown in figure 1:
(1) mixing domestic garbage with natural alumino-silicate particles crushed to be less than 5mm in particle size, feeding the mixture into a garbage incinerator for incineration, wherein the natural alumino-silicate materials are selected from tuff and tuff lava, the mass ratio of the natural alumino-silicate particles to the domestic garbage is (2-8):100, the incineration temperature of the garbage incinerator is not lower than 750 ℃, the incineration time is more than 0.5 hour, and the thermal activation is carried out on the gelatinization characteristic of the natural alumino-silicate particles by utilizing the existing garbage incineration process;
(2) collecting the burned ash and fly ash and sorting to obtain incomplete combustion sundries, waste metal and fly ash which is used for cooperatively burning the ash and the fly ash to be solidified, wherein the incomplete combustion sundries are sent back to the feeder again to be mixed with the next batch of household garbage to be burned, and the waste metal is used for regenerating metal;
(3) doping natural silica-alumina particles into the collaborative incineration ash and the fly ash to be solidified again, and obtaining mixed powder after dynamic configuration and grinding, wherein the dynamic configuration is a mixture which utilizes a planning solving function in EXCEL software and satisfies the conditions that KH is between 0.7 and 1.2, A is between 3 and 10 and B is between 0.2 and 0.4 according to an optimized mathematical theory, and the particle size of the mixed powder obtained after grinding is 150-mesh and 250-mesh;
(4) adding water glass/sodium hydroxide and water into the mixed powder, and uniformly mixing to obtain a gel, specifically, selecting water glass and sodium hydroxide to prepare an alkali activator, adding the alkali activator into water preheated to 40 ℃, wherein the modulus of the water glass is between 1.1 and 1.4, and the ratio of the water glass to the sodium hydroxide is 1: (0.1-0.6) the mass ratio of the mixed powder, the water glass/sodium hydroxide and the water is 1: 0.6: 0.8.
further, the gel is evenly stirred and then discharged into a die, and a hard block can be prepared after shaking, pressing and curing.
The method for realizing dynamic configuration by using the planning and solving function in the EXCEL software in the step (3) specifically comprises the following steps:
s1, inputting the component proportions of the synergetic incineration ash, the fly ash, the natural alumino-silica particles and the fly ash to be solidified into an Excel working table, namely a cell B1-a cell K5 in the table 1, wherein the supposed blending amount is firstly input into a blending amount column, namely a column M;
s2, inputting a calculation formula of the index KH, the index A and the index B into an Excel worksheet, wherein the index KH is a lime saturation coefficient, and the calculation formula is as follows:
the index a, describing the ratio of the amount of Si element to Al element species:
the index B, description Na2O oxide and SiO2Mass ratio of oxides:
s3, determining an objective function, and setting the target value as the maximum value of the sum of the masses of the synergic incineration ash and the to-be-solidified fly ash, namely the cell M2+ the cell M5 in the table 1;
s4, determining independent variables, and inputting the doping amount of each raw material in an Excel worksheet through changing variable cells, namely the cells M2, M3, M4 and M5 in the table 1;
s5, determining constraint conditions: KH is more than or equal to 0.7 and less than or equal to 1.2, A is more than or equal to 3 and less than or equal to 10, B is more than or equal to 0.20 and less than or equal to 0.40, mCo-incinerated ash+mFly ash+mNatural silicon-aluminium raw material+mFly ash to be solidified≤500；
And S6, planning and solving functions by using Excel software to obtain the doping amount of each variable.
The proportions of the components in step S1 are obtained by lithofacies analysis, XRF quantitative analysis, or infrared spectroscopy analysis.
TABLE 1 ingredient calculation Table (for explaining ingredient process). calculation of
It should be noted that the method for obtaining each doping amount is not limited to the EXCEL software, but also includes other methods capable of ensuring the configuration of the above three indexes, which are not described herein again.
In conclusion, the method for treating fly ash by using household garbage-alumino-silicate materials and incinerated ash in cooperation provided by the invention realizes solidification treatment of heavy metal ions in solid waste at low cost and high efficiency, solves the problems of resource utilization of household garbage incinerated ash and harmless treatment of incinerated fly ash, achieves the purposes of changing waste into valuable and treating waste with waste, and has remarkable social benefit and economic benefit.
In addition, the application scenario of the method for disposing fly ash by using household garbage-alumino-silicate material in cooperation with incineration ash provided by the invention can be used for curing other solid wastes like fly ash (or containing heavy metal ions) besides the above embodiments.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A method for disposing fly ash by utilizing household garbage-silicon-aluminum materials in cooperation with incineration ash is characterized by comprising the following steps:
(1) mixing the domestic garbage with natural silicon-aluminum particles, and then feeding the mixture into a garbage incinerator for incineration;
(2) collecting the incinerated ash and fly ash and sorting to obtain synergistic incinerated ash and fly ash to be solidified;
(3) doping natural silica-alumina particles into the synergistic incineration ash and the fly ash to be solidified again, and obtaining mixed powder after dynamic configuration and grinding;
(4) adding water glass/sodium hydroxide and water into the mixed powder, and uniformly mixing to obtain the gel.
2. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: the natural alumino-silica particles are tuff and tuff lava which are crushed to be less than 5mm in particle size.
3. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: the mass ratio of the natural silicon-aluminum particles to the domestic garbage in the step (1) is (2-8):100, the incineration temperature of the garbage incinerator is not lower than 750 ℃, and the incineration time is more than 0.5 hour.
4. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: incomplete combustion sundries and waste miscellaneous metals can be obtained through sorting in the step (2), the incomplete combustion sundries are sent back to the feeder again to be mixed with the next batch of household garbage to be incinerated, and the waste miscellaneous metals are used for regenerating metals.
5. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: the method for dynamic configuration in the step (3) comprises the following steps:
s1, inputting the component proportions of the synergic incineration ash, the fly ash, the natural alumino-silica particles and the fly ash to be solidified into an Excel working table;
s2, inputting a calculation formula of the index KH, the index A and the index B into an Excel worksheet, wherein the index KH is a lime saturation coefficient, and the calculation formula is as follows:
the index a, describing the ratio of the amount of Si element to Al element species:
the index B, description Na2O oxide and SiO2Mass ratio of oxides:
s3, determining an objective function, and setting the objective function as the maximum value of the sum of the masses of the collaborative incineration ash and the to-be-solidified fly ash;
s4, determining independent variables, and inputting the doping amount of each raw material in an Excel worksheet through changing variable cells;
s5, determining constraint conditions: KH is more than or equal to 0.7 and less than or equal to 1.2, A is more than or equal to 3 and less than or equal to 10, B is more than or equal to 0.20 and less than or equal to 0.40,
mco-incinerated ash+mFly ash+mNatural silicon-aluminium raw material+mFly ash to be solidified≤500；
And S6, planning and solving functions by using Excel software to obtain the doping amount of each variable.
6. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: the particle size of the mixed powder obtained after grinding in the step (3) is 150-250 meshes.
7. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: in the step (4), water glass and sodium hydroxide are selected to prepare an alkali activator, the alkali activator is added into water preheated to 40 ℃, the modulus of the water glass is between 1.1 and 1.4, and the ratio of the water glass to the sodium hydroxide is 1: (0.1-0.6).
8. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: the mass ratio of the mixed powder, the water glass/sodium hydroxide and the water in the step (4) is 1: 0.6: 0.8.
9. the method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 1, wherein: and (4) uniformly stirring the gelled body in the step (4), discharging into a die, and vibrating, pressing and maintaining to obtain the hard block.
10. The method for disposing fly ash by using household garbage-alumino-silica materials in cooperation with incineration ash as claimed in claim 5, wherein: the proportions of the components in step S1 are obtained by lithofacies analysis, XRF quantitative analysis, or infrared spectroscopy analysis.
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| CN202111281390.0A CN113983466A (en) | 2021-11-01 | 2021-11-01 | Method for treating fly ash by utilizing household garbage-silicon-aluminum material in cooperation with incineration ash |
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| CN114904898A (en) * | 2022-06-02 | 2022-08-16 | 天津中材工程研究中心有限公司 | System and method for self-enriching dioxin in fly ash |
| CN115403355A (en) * | 2022-08-08 | 2022-11-29 | 中国电力工程顾问集团华东电力设计院有限公司 | Method for preparing light low-silicon aluminum ceramsite by cooperation of silicon-aluminum material and ash and fly ash |
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