CN113402259A - Method for preparing ceramic material from hazardous waste incineration ash - Google Patents
Method for preparing ceramic material from hazardous waste incineration ash Download PDFInfo
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004056 waste incineration Methods 0.000 title claims abstract description 27
- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 239000002956 ash Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000000498 ball milling Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000004927 clay Substances 0.000 claims abstract description 9
- 239000010433 feldspar Substances 0.000 claims abstract description 9
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 238000005469 granulation Methods 0.000 claims abstract description 5
- 230000003179 granulation Effects 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 238000007873 sieving Methods 0.000 claims abstract description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 13
- 239000011734 sodium Substances 0.000 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 6
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 210000004127 vitreous body Anatomy 0.000 description 3
- 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 2
- 238000001723 curing Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1355—Incineration residues
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing a ceramic material from hazardous waste incineration ash, which belongs to the fields of resource utilization of hazardous waste and environmental protection and comprises the following steps: the method comprises the following steps of (1) mixing hazardous waste incineration fly ash and hazardous waste incineration bottom slag in a mass ratio of 1: (3-8) mixing the materials; melting the obtained mixture by using a plasma furnace to form liquid molten slag, and carrying out water quenching and granulation to obtain granulated glass slag; the mass ratio of the granulated glass slag to the feldspar to the clay is 100: (5-15): (5-15) mixing the raw materials to obtain a raw material, and then respectively adding an adhesive accounting for 0.1-0.3% of the total weight of the raw materials and a dispersing agent accounting for 0.1-0.4% of the total weight of the raw materials into the raw materials to obtain a mixture; and sequentially carrying out wet ball milling, sieving, drying, profiling and sintering on the obtained mixture to obtain the ceramic material. The invention expands the resource utilization path of the hazardous waste ash, and the ash can replace most of ore raw materials for producing ceramics, thereby saving the ore raw materials and reducing the production cost.
Description
Technical Field
The invention belongs to the field of resource utilization of hazardous wastes and environmental protection, and particularly relates to a method for preparing a ceramic material from hazardous waste incineration ash.
Background
The industrialization process of China is accelerated, and the generation amount of dangerous waste is increased day by day. According to statistics, the national generation amount of dangerous wastes in 2019 is about 9400 ten thousand tons, wherein the incineration proportion accounts for about 30-40% of the total amount. The burning of the hazardous waste can generate a large amount of ash, wherein the fly ash accounts for about 3-5% of the weight of the hazardous waste in the furnace, and the bottom slag accounts for about 20-30% of the weight of the hazardous waste in the furnace. In the national records of dangerous waste records, it is specified that fly ash and bottom slag generated in the processes of incineration, pyrolysis and the like of dangerous waste belong to dangerous waste HW 18.
At present, hazardous waste incineration ash generally adopts safe landfill, plasma melting vitrification and other treatment modes. The safe landfill method is characterized in that ash residues are simply treated and then sent to a landfill site for landfill, heavy metals cannot be effectively solidified and dioxin cannot be decomposed by the treatment method, and the risk of environment pollution caused by overflowing of harmful substances exists for a long time; and the landfill cost gradually increases, and the application of the method is continuously reduced. The plasma melting and curing method is to vitrify the hazardous waste incineration ash, so as to realize the decomposition of organic pollutants such as dioxin and the like and the curing of heavy metal glass, and then the glass slag is recycled. The resource utilization mode comprises the use of the slag as roadbed aggregate, cement mixture, heat preservation rock wool, glass ceramics and the like, for example, CN108545933A discloses a method for preparing vitreous body by using hazardous waste incineration slag, wherein the slag, siliceous substances, CaO and kaolin are mixed according to a designed proportion, treated and melted to obtain vitreous body, and the vitreous body is used as common solid waste for landfill or building materials for processing. Compared with roadbed aggregates, cement mixtures and brickmaking, the added value of the ceramic material is higher, but the preparation of the ceramic material by using hazardous waste incineration ash is not reported.
Disclosure of Invention
The technical problem to be solved is as follows: aiming at the technical problems, the invention provides a method for preparing a ceramic material from hazardous waste incineration ash, which expands the resource utilization path of the hazardous waste ash, and simultaneously, the ash can replace most of ore raw materials for ceramic production, thereby saving the ore raw materials and reducing the production cost.
The technical scheme is as follows: a method for preparing ceramic materials from hazardous waste incineration ash comprises the following steps:
s1, burning fly ash and bottom slag of hazardous waste incineration according to a mass ratio of 1: (3-8) mixing the materials;
s2, melting the mixture obtained in the step S1 by using a plasma furnace to form liquid molten slag, and carrying out water quenching and granulation to obtain granulated glass slag;
s3, mixing the granulated glass slag, the feldspar and the clay according to a mass ratio of 100: (5-15): (5-15) mixing the raw materials to obtain a raw material, and then respectively adding an adhesive accounting for 0.1-0.3% of the total weight of the raw materials and a dispersing agent accounting for 0.1-0.4% of the total weight of the raw materials into the raw materials to obtain a mixture;
and S4, sequentially carrying out wet ball milling, sieving, drying, compression and sintering on the mixture obtained in the step S3 to obtain the ceramic material.
Preferably, the water-granulated granulation water pressure in the step S2 is 0.1-0.3 MPa.
Preferably, the binder in step S3 is sodium carboxymethyl cellulose.
Preferably, the dispersant in step S3 is sodium humate.
Preferably, the wet ball milling time in the step S4 is 30 to 60 min.
Preferably, the mesh number sieved in the step S4 is 40-70.
Preferably, the drying in the step S4 is performed until the weight fraction of the moisture in the mixture is 5%.
Preferably, the molding method in step S4 is dry press molding.
Preferably, the sintering process in step S4 is: heating the mixture for 15min at the temperature of room temperature to 500 ℃, heating the mixture for 15min at the temperature of 500 ℃ to 950 ℃, heating the mixture for 20min at the temperature of 950 ℃ to 1120 ℃ to 1160 ℃, and keeping the mixture for 20min at the temperature of 1120 ℃ to 1160 ℃.
Has the advantages that: compared with the method for making bricks by utilizing the hazardous waste incineration ash, preparing a cement mixture and the like, the method for preparing the ceramic material by utilizing the ash has higher added value, and simultaneously expands the resource utilization approach of the hazardous waste incineration ash.
The traditional ceramic production raw materials mainly comprise clay, quartz and feldspar ore raw materials, the hazardous waste incineration ash slag molten glass is used for preparing the ceramic material, the glass usage in the ceramic raw materials accounts for 80-90% of the total weight, the ore raw materials required by ceramic production can be obviously saved, and the production cost is reduced.
Drawings
FIG. 1 is a flow chart of preparing ceramic materials from hazardous waste incineration ash.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific embodiments.
Example 1
Mixing fly ash and bottom slag according to the mass ratio of 1:8, melting in a plasma furnace to form liquid molten slag, and performing water quenching and cooling on the molten slag to obtain granulated glass slag with the granulating water pressure of 0.3 MPa. Preparing raw materials according to a mass ratio, wherein 100 parts of granulated glass slag, 15 parts of feldspar and 5 parts of clay are added, sodium hydroxymethyl cellulose accounting for 0.3% of the total weight of the raw materials and sodium humate accounting for 0.2% of the total weight of the raw materials are added to form a mixture, the mixture is subjected to wet ball milling and mixing for 30min, slurry is dried after being screened by a 40-mesh sieve, the drying is carried out until the moisture content is about 5%, and the dried material is subjected to dry pressing and forming. And (4) sintering the formed blank in a kiln, and naturally cooling to room temperature. The temperature rising system in the sintering process is as follows: the temperature rise time is 15min from room temperature to 500 ℃, 15min from 500 ℃ to 950 ℃, 20min from 950 ℃ to 1140 ℃ and 20min from 1140 ℃. The compression strength of the fired product is 142.6MPa, the breaking strength is 45.2MPa, and the water absorption is 0.37%.
Example 2:
mixing fly ash and bottom slag according to the mass ratio of 1:6, melting in a plasma furnace to form liquid molten slag, and performing water quenching and cooling on the molten slag to obtain granulated glass slag with the granulating water pressure of 0.2 MPa. Preparing raw materials according to a mass ratio, wherein 100 parts of granulated glass slag, 15 parts of feldspar and 10 parts of clay are added, sodium hydroxymethyl cellulose accounting for 0.2% of the total weight of the raw materials and sodium humate accounting for 0.4% of the total weight of the raw materials are added to form a mixture, the mixture is subjected to wet ball milling and mixing for 40min, slurry is dried after being screened by a 50-mesh sieve, the drying is carried out until the moisture content is about 5%, and the dried material is subjected to dry pressing and forming. And (4) sintering the formed blank in a kiln, and naturally cooling to room temperature. The temperature rising system in the sintering process is as follows: the temperature rise time is 15min from room temperature to 500 ℃, 15min from 500 ℃ to 950 ℃, 20min from 950 ℃ to 1160 ℃ and 20min from 1160 ℃. The compression strength of the fired product is 127.4MPa, the breaking strength is 39.6MPa, and the water absorption rate is 0.26%.
Example 3:
mixing fly ash and bottom slag according to the mass ratio of 1:5, melting in a plasma furnace to form liquid molten slag, and performing water quenching and cooling on the molten slag to obtain granulated glass slag with the granulating water pressure of 0.1 MPa. Preparing raw materials according to a mass ratio, wherein 100 parts of granulated glass slag, 10 parts of feldspar and 15 parts of clay are added, sodium hydroxymethyl cellulose accounting for 0.1% of the total weight of the raw materials and sodium humate accounting for 0.3% of the total weight of the raw materials are added to form a mixture, the mixture is subjected to wet ball milling and mixing for 50min, slurry is dried after being screened by a 60-mesh sieve, the drying is carried out until the moisture content is about 5%, and the dried material is subjected to dry pressing and forming. And (4) sintering the formed blank in a kiln, and naturally cooling to room temperature. The temperature rising system in the sintering process is as follows: the temperature rise time is 15min from room temperature to 500 ℃, the temperature rise time is 15min from 500 ℃ to 950 ℃, the temperature rise time is 20min from 950 ℃ to 1120 ℃, and the temperature preservation time is 15min at 1120 ℃. The compression strength of the fired product is 165.2MPa, the breaking strength is 58.2MPa, and the water absorption rate is 0.13%.
Example 4:
mixing fly ash and bottom slag according to the mass ratio of 1:4, melting in a plasma furnace to form liquid molten slag, and performing water quenching and cooling on the molten slag to obtain granulated glass slag with the granulating water pressure of 0.3 MPa. Preparing raw materials according to a mass ratio, wherein 100 parts of granulated glass slag, 10 parts of feldspar and 15 parts of clay are added, sodium hydroxymethyl cellulose accounting for 0.2% of the total weight of the raw materials and sodium humate accounting for 0.2% of the total weight of the raw materials are added to form a mixture, the mixture is subjected to wet ball milling and mixing for 60min, slurry is dried after being screened by a 40-mesh sieve, the drying is carried out until the moisture content is about 5%, and the dried material is subjected to dry pressing and forming. And (4) sintering the formed blank in a kiln, and naturally cooling to room temperature. The temperature rising system in the sintering process is as follows: the temperature rise time is 15min from room temperature to 500 ℃, 15min from 500 ℃ to 950 ℃, 20min from 950 ℃ to 1120 ℃, and 20min from 1120 ℃. The compression strength of the fired product is 192.6MPa, the breaking strength is 64.3MPa, and the water absorption is 0.42%.
Example 5:
mixing fly ash and bottom slag according to the mass ratio of 1:3, melting in a plasma furnace to form liquid molten slag, and performing water quenching and cooling on the molten slag to obtain granulated glass slag with the granulating water pressure of 0.2 MPa. Preparing raw materials according to a mass ratio, wherein 100 parts of granulated glass slag, 5 parts of feldspar and 15 parts of clay are added, sodium hydroxymethyl cellulose accounting for 0.2% of the total weight of the raw materials and sodium humate accounting for 0.1% of the total weight of the raw materials are added to form a mixture, the mixture is subjected to wet ball milling and mixing for 60min, slurry is dried after being screened by a 70-mesh sieve, the drying is carried out until the moisture content is about 5%, and the dried material is subjected to dry pressing and forming. And (4) sintering the formed blank in a kiln, and naturally cooling to room temperature. The temperature rising system in the sintering process is as follows: the temperature rise time from room temperature to 500 ℃ is 15min, the temperature rise time from 500 ℃ to 950 ℃ is 15min, the temperature rise time from 950 ℃ to 1150 ℃ is 20min, and the temperature preservation time at 1150 ℃ is 20 min. The sintered product has the compressive strength of 194.8MPa, the breaking strength of 47.2MPa and the water absorption of 0.23 percent.
Claims (9)
1. The method for preparing the ceramic material from the hazardous waste incineration ash is characterized by comprising the following steps of:
s1, burning fly ash and bottom slag of hazardous waste incineration according to a mass ratio of 1: (3-8) mixing the materials;
s2, melting the mixture obtained in the step S1 by using a plasma furnace to form liquid molten slag, and carrying out water quenching and granulation to obtain granulated glass slag;
s3, mixing the granulated glass slag, the feldspar and the clay according to a mass ratio of 100: (5-15): (5-15) mixing the raw materials to obtain a raw material, and then respectively adding an adhesive accounting for 0.1-0.3% of the total weight of the raw materials and a dispersing agent accounting for 0.1-0.4% of the total weight of the raw materials into the raw materials to obtain a mixture;
and S4, sequentially carrying out wet ball milling, sieving, drying, compression and sintering on the mixture obtained in the step S3 to obtain the ceramic material.
2. The method for preparing the ceramic material from the hazardous waste incineration ash as claimed in claim 1, wherein the water quenching granulation pressure in the step S2 is 0.1-0.3 MPa.
3. The method for preparing ceramic material from hazardous waste incineration ash as claimed in claim 1, wherein said binder in step S3 is sodium hydroxymethyl cellulose.
4. The method for preparing ceramic material from hazardous waste incineration ash as claimed in claim 1, wherein said dispersant in step S3 is sodium humate.
5. The method for preparing the ceramic material from the hazardous waste incineration ash as claimed in claim 1, wherein the wet ball milling time in the step S4 is 30-60 min.
6. The method for preparing the ceramic material from the hazardous waste incineration ash as claimed in claim 1, wherein the mesh number of the screen in the step S4 is 40-70.
7. The method for preparing ceramic material from hazardous waste incineration ash as claimed in claim 1, wherein said step S4 is drying until the weight fraction of water in the mixture is 5%.
8. The method for preparing a ceramic material from hazardous waste incineration ash as claimed in claim 1, wherein the forming manner in step S4 is dry press forming.
9. The method for preparing ceramic material from hazardous waste incineration ash as claimed in claim 1, wherein the sintering process in step S4 is: heating the mixture for 15min at the temperature of room temperature to 500 ℃, heating the mixture for 15min at the temperature of 500 ℃ to 950 ℃, heating the mixture for 20min at the temperature of 950 ℃ to 1120 ℃ to 1160 ℃, and keeping the mixture for 20min at the temperature of 1120 ℃ to 1160 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110783428.8A CN113402259A (en) | 2021-07-12 | 2021-07-12 | Method for preparing ceramic material from hazardous waste incineration ash |
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| CN113058981A (en) * | 2021-04-08 | 2021-07-02 | 中节能工程技术研究院有限公司 | Disposal method for bottom slag and dust generated by burning hazardous waste |
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| JPH06227853A (en) * | 1993-02-02 | 1994-08-16 | Maruka Seito Kk | Body composition for ceramic |
| CN109574504A (en) * | 2018-12-26 | 2019-04-05 | 内蒙古科技大学 | A kind of method that utilization relates to weight dangerous waste slag preparation glass ceramics |
| CN109626830A (en) * | 2018-12-26 | 2019-04-16 | 内蒙古科技大学 | Utilize dangerous waste treated quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of hot molten slag |
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Application publication date: 20210917 |