CN104891961B - A kind of method that incineration of refuse flyash recycles production thin ceramic bricks - Google Patents
A kind of method that incineration of refuse flyash recycles production thin ceramic bricks Download PDFInfo
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- CN104891961B CN104891961B CN201510276863.6A CN201510276863A CN104891961B CN 104891961 B CN104891961 B CN 104891961B CN 201510276863 A CN201510276863 A CN 201510276863A CN 104891961 B CN104891961 B CN 104891961B
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- incineration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
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Abstract
Thin ceramic bricks are prepared for raw material using incineration of refuse flyash the invention discloses one kind, the method for realizing incineration of refuse flyash harmless treatment.Incineration of refuse flyash is carbonated after chemically stable PROCESS FOR TREATMENT by the present invention through flue gas, after the feed proportioning such as clay, through ball milling, sieving, granulation, shaping, glazing, the process such as burn till, the 6mm of adobe thickness 4.5 can be produced, within shrinkage factor 2%, water absorption rate 11% 13%, the high-quality thin ceramic bricks of the index such as 20MPa of the modulus of rupture 15.The present invention recycles using danger wastes-incineration of refuse flyash as developing thin ceramic bricks raw material, heavy metal in flying dust is solidified by be carbonated chemically stable technique of flue gas, and bioxin therein can thoroughly be destroyed by calcining and reach that incineration of refuse flyash is innoxious and recycling treatment purpose.
Description
Technical field：
The present invention relates to a kind of preparation method of thin ceramic bricks, more particularly to one kind is raw material using incineration of refuse flyash
The method for producing thin ceramic bricks.
Background technology：
Domestic waste increases a major issue for having become and restricting urban sustainable development rapidly, according to statistics
Display：The rubbish stored up over the years up to 7,000,000,000 heaps, has occupied about 800,000 mu of soils, and potential influence and danger are caused on environment
Evil.Garbage incineration technology can effectively destroy organic toxicant, substantially reduce the volume of rubbish, can typically be reduced to original
The 5% ~ 30% of volume, waste heat can also recycle caused by burning, and the technology turns into garbage as resource, nothing on our times
One of major way of evilization and volume reduction treatment technology.But a number of incineration residue can be produced after waste incineration.Burn
Ashing slag is the effluent to get off from the collection such as waste incinerator and smoke duster, waste heat boiler, mainly by bottom ash（Bottom
Ash）And flying dust（Fly Ash）Collectively constitute.The residue that bottom ash system is discharged after burning by siege tail end, constitutes about lime-ash
80%~90%（Quality meter）；And flying dust refers in flue gas purification system（Air Pollution Control System, APC）Receive
Residue obtained by collection, constitutes about 10% ~ 20% in lime-ash（Quality meter）.The harmful substance contents of bottom ash are less, as general
Disposition of solid waste.But《National Hazard waste register》Solid waste burning flying dust is classified as hazardous waste numbering
HW18251。
Analysis shows：The constituent of flying dust mainly has SiO2、P2O5、Al2O3Deng acidic oxide and CaO, MgO,
Fe2O3、CuO、TiO2 、K2O、Na2The basic anhydride such as O and higher Cd, Pb, Zn, Cr, the Cu of some Leachings etc. are a variety of
Harmful heavy metal material and salt, while caused bioxin in burning（Duo chlorodiphenyl Bing bioxin, polychlorinated dibenzo）,
Also largely it is attached on flying dust.It is a kind of generally acknowledged hazardous waste, wherein two because containing bioxin and plurality of heavy metal in flying dust
Evil English and the difficult point that heavy metal is in processing procedure.Further, since the chemical composition of incineration of refuse flyash is because of flue gas treating process
With the difference of region, several main oxides contents have certain scope in flying dust：Wherein SiO2Content accounts for 5%-39%；CaO
Content accounts for 7%-35%；Al2O3Content accounts for 1.5%-12%；K2O content accounts for 0.5%-10%；Fe2O3Content accounts for 1.5%-13%；Na2O content
Account for 2%-8%；Content of MgO accounts for 1% to 5%；By percentage to the quality, the content of these materials determines the change of flying dust to above content
Learn characteristic, physical characteristic and structure etc..
Because flying dust toxicity is higher, solidification, stabilization processes need to be typically first passed through before final disposal is carried out to it.
The common method of flying dust disposal at present mainly has：Cement solidification, bitumen solidification, melting and solidification technology, chemical agent solidification are stable
Change etc., the product after solidification and stabilization is handled, such as meet Leaching standard or recycling standard, can enter
Common landfill yard carries out landfill stabilization or carries out recycling.Various flying dust methods of disposal are described as follows：（1）Cement solidification skill
Flying dust and cement concrete are exactly mixed to form solid-state by art, and hard solidified cement body is formed after hydration reaction, so as to reach
To the purpose that hazard component leaches in flying dust is reduced, its general principle is to contain the surface area of reduction flying dust by solidifying and subtracted
Its low permeability, reach stabilisation, innoxious purpose.The technology is relatively simple reliable, but shortcoming is cement consumption
Greatly, waste significantly increase-volume is caused, processing cost is higher；（2）Melting and solidification method is also known as vitrification, and the technology is to treat
The flying dust and glass filler of processing are added in high-temperature electric arc stove or plasma heating furnace, are handled by high-temperature fusion, it is produced glass
Shape silicate form, its dissolving is set not come out wherein ease of solubility component bag.The technology needs special equipment, and investment is high, disposal
Expense is also higher；（3）Chemical stabilization is poisonous and harmful substance is changed into low dissolving by chemical reaction using chemical agent
The process of property, low migration and hypotoxicity material.But each heavy metal species are carried out effectively stablizing, it is general to add costly
Organic sequestering agent or other chemical agents, and dosage is relatively large（5-10%）, cause flying dust processing cost higher.
Because the above flying dust method of disposal cost of disposal is universal higher, current most flying ash is still to carry out
Simple landfill.Landfill stabilization does not only take up tract and handling is high（2700 yuan/ton of landfill yard administration fee）, China
Often it is only flying dust processing cost and is just up to tens, and the processing of flying dust landfill yard can not destroys bioxin, heavy metal therein
It can not degrade, once leakage occurs will cause greatly to endanger to society, therefore there is certain hidden danger.However, in flying dust
It is a kind of useful material containing more silicate and aluminosilicate, resourcebility utilizes.Thin ceramic bricks are developed with flying dust
The recycling of waste can be realized, and huge flying dust processing cost can be saved.But former using flying dust as auxiliary
In the ceramic tile manufacturing process of material, if handled without early stage, under conditions of having water and having acid or alkali, preparing
The links such as dispensing, grinding batch mixing, conveying in process will have heavy metal ion dissolution, the potential danger of migration, and harm is made
Industry workers ' health, pollute plant environment.
The content of the invention：
It is an object of the invention to：For above-mentioned problem, there is provided one kind domestic garbage incineration flyash is made thin
The preparation method of type Ceramic Tiles.By carrying out flue gas carbonating chemical stabilization PROCESS FOR TREATMENT to solid waste flying dust, not only
Effective fixation to heavy metal ion in flying dust is realized, and realizes simultaneously and flying dust is processed into a kind of qualified ceramic raw material system
Into the thin ceramic bricks of high-quality index.
Technical scheme is as follows：
A kind of method that incineration of refuse flyash recycles production thin ceramic bricks, processing step include Feedstock treating, dispensing,
Step, its feature such as ball milling, iron removaling, old, spraying legal system powder are granulated, shaping, dry, the fast burning of high temperature, glazing stamp, glaze firing exist
In：
（1）Described Feedstock treating is to add water to form slurries in flying dust, adds composite chemical stabilizer, aqueous phase pair
The additional proportion of flying dust quality is 0.3-1L/kg, and chemically stable medicament is 2-5wt% with respect to the additional proportion of flying dust quality；
（2）The incineration flue gas of garbage burning factory is passed through into above-mentioned slurries, every kilogram of flying dust flue gas ventilation flow rate is 0.1-
0.5m3/ min, after reaction completely, dry flying dust slurry, you can as ceramic tile raw material.
As preferred：Step（1）Described in composite chemical stabilizer include dissolvable sulfide, soluble phosphate,
Phosphoric acid, soluble carbonate salt.
As preferred：The application method of composite chemical stabilizer be above medicament two or more with random order respectively or
Person is all added in slurries simultaneously.
As preferred：Described dissolvable sulfide is selected from least one of vulcanized sodium, sodium thiosulfate；Described can
Soluble phosphoric acid salt is selected from least one of disodium-hydrogen, sodium dihydrogen phosphate, sodium phosphate；Described soluble carbonate salt is selected from
At least one of sodium carbonate, sodium acid carbonate.
Further：Described dissolvable sulfide is vulcanized sodium.
Further：Described soluble phosphate is disodium-hydrogen.
Further：Described soluble carbonate salt is sodium carbonate.
The principle of flue gas carbonating chemically stable technique is in this programme：Add water to and slurry system is formed in flying dust, burn
Burn after flying dust meets water in whipping process and be passed through in alkalescence, flying dust while stirring reaction occurs with composite chemical stabilizer
The flue gas of garbage incinerating power plant, the flue gas of garbage incinerating power plant reach discharge standard heel row after multistage purification is handled
The main component being put into air is carbon dioxide, oxygen, water vapour and nitrogen, wherein CO2Volumn concentration is 7-12%,
Becoming the main source of greenhouse gases, the above-mentioned flue gas reached after discharge standard contacts with the flying dust being stirred in reaction, and one
Aspect by the springing up of air-flow, agitate, the chemical stabilization that may advantageously facilitate heavy metal in composite chemical stabilizer and flying dust is anti-
Should；On the other hand, the CO in flue gas2With the CaO in flying dust be settled out calcite until with CO2Reaction reaches balance；CaCO3
Absorb CO2In the case of, heavy metal carbonate mine material can be formed with the oxide of the heavy metal such as Pb, Cu, Zn, As.With Pb
Exemplified by, Pb2+To CaCO3With stronger affinity, easily CaCO is adsorbed on because of isomorph3Form co-precipitation PbCO3,
Chemical equation is Pb2++CaCO3→PbCO3+Ca2+, so as to reduce Leaching.
The present invention in flying dust whipping process, is led to using flying dust innovation treatment process-flue gas carbonating chemically stable method
The double action of chemically stable and flue gas carbonating stabilization is crossed, flying dust is handled, the heavy metal quilt in the flying dust after processing
Seal up for safekeeping, be trapped in the mineral matter newly formed, avoid in later stage ceramic tile preparation process, the dissolution of toxic heavy metal, move
Move.Relatively conventional chemically stable method, the inorganic medicament of present invention relative inexpensiveness, and dosage are less to can be achieved counterweight gold
Effective stabilization of category；On the other hand, after garbage incinerating power plant flue gas is captured by alkaline flying dust, CO2Content can reduce by 25 ~ 40%,
So as to reduce influence of the discharge flue gas to atmospheric warming effect, the purpose of waste recycling is realized.The present invention passes through innovation
" flue gas carbonating chemically stable " facture, you can it is a kind of qualified that realization is directly processed into flying dust in garbage incinerating power plant
Ceramic raw material.
Ceramic Tiles slimming is one of important channel that Building Ceramics Industry realizes resources conservation, energy-saving and emission-reduction.Due to super
Thin Ceramic Tiles thickness only has 4.5-6mm, because to be transmitted on the conveyor line, and then to the green strength of thin ceramic ceramic tile
It is required that it is higher, so the slimming production of raw material selection and formula design to Ceramic Tiles is extremely important.City garbage burning flying ash
Chemical composition is close with cement, and particle is tiny, and average grain diameter is 10-40 microns, much smaller than general clay raw mineral materials, by this
Pretreated flying dust early stage is invented, specific surface area is big, has certain gelling characteristic, by being suitably introduced into flying dust, it is possible to achieve
The plastic material such as flying dust and clay uniformly mixes, and is advantageous to be gelled, solidifies and form pilotaxitic texture, and it is higher to produce early strength
Ceramic body, green compact rupture strength is in more than 2.5MPa after compacting, and rupture strength is higher in more than 8MPa after green compact are dried
Green strength is to prepare the key of thin ceramic ceramic tile.
The introducing of Ca, K, Na, Zn and Mg oxide in flying dust adds the component of a large amount of calcium, constitutes silicon-aluminium-calcium and is
The eutectic system of main component, anorthite can be generated at a lower temperature.The Wollastonite formula that the present invention uses is burnt till
Base substrate in, the wollastonite of needle-like is in interleaved arrangement, and the crystal surrounding in wollastonite is it and the reaction of clay mineral generates
The border ring texture of thing-anorthite and cristobalite composition, these products play reinforcement of weld effect.Anorthitic growing amount is got over
More, border ring is thicker, then the acicular crystal of wollastonite and the consolidation of surrounding are more firm, and the intensity of finished product is higher.
In addition, flying dust-clay systems are rich in SiO2、Al2O3Deng metal oxide, they are under ceramic sintering temperature, by shape
Silicate, alumino silicate material into skeletal structure, substantial amounts of Ca, K, Na and Mg ion, above-mentioned ion also be present in flying dust
As Network modifier, be advantageous to destroy silicon-oxygen key, aluminium-oxygen key, new silicate and aluminosilicate structure formed, so as to have
Beneficial to the sintering temperature for reducing ceramic tile, this is highly beneficial to the energy saving technique for realizing Production of Ceramics low temperature fast firing.Therefore this hair
The bright Ultrathin ceramic tile using the production of the raw materials such as incineration of refuse flyash is on the basis of product physical property is ensured, by the thickness of adobe
4.5-6.0mm is reduced to from 9.0-10.0 mm.Its product rupture strength 350-500N, modulus of rupture 15-20MPa, water absorption rate
11-13%, index 130-170nsv/h is radiated, product physical property has all reached architectural pottery standard, and is made pottery made of the present invention
Actual burn till of ceramic tile is punctured into 0.3%- 0.5%, is punctured into 1% or so less than actually burning till for traditional glazed tile, advantageously ensures that
The accuracy of product size in being rapidly fired to.Due to the brick weight saving of ultra-thin ceramic unit area, with traditional pottery brick phase
Than unit product logistics cost declines 30-50%, and the raw material used reduces 30%-60% than original, and energy use can also save
At least 30%.
Embodiment
The present invention is described in detail below
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is described in further detail.It should be appreciated that specific embodiment described herein does not limit only to explain the present invention
In the present invention.
Incineration of refuse flyash used in the present invention is derived from garbage incinerating power plant flying dust under Chinese energy-conserving and environment-protective group
| Element | O | Cl | Ca | Na | K | S | Si | Fe | Mg | Al | Zn | P | Ti | C |
| Content (%) | 46.60 | 1.42 | 19.46 | 1.25 | 1.31 | 6.69 | 6.92 | 2.19 | 3.05 | 2.22 | 0.90 | 1.03 | 0.70 | 5.41 |
The X-ray fluorescence spectra of essential element content in the flying dust of table 1.（XRF）Analysis：
Eight big element oxide component content analysis in the flying dust of table 2.：
| Oxide | SiO2 | Al2O3 | CaO | MgO | Fe2O3 | K2O | Na2O | TiO2 |
| Content (%) | 7.17 | 2.16 | 24.42 | 1.69 | 0.84 | 8.55 | 3.09 | 0.01 |
Heavy metal ion content is used according to People's Republic of China (PRC) environmental protection professional standard HJ/T 300-2007《Gu
Body waste Leaching leaching method hac buffer method》The leachate of flying dust or ceramic tile is prepared, and is sent out by plasma
Penetrate spectrum（ICP-AES）Detected.
Heavy metal ion leaching concentration in garbage incinerating power plant flying dust under the Chinese energy-conserving and environment-protective group of table 3.
| Heavy metal concentration ppm | Pb | Hg | Se | Cd | Cr | As | Zn | Cu |
| Flying ash | 19.2700 | 0.0490 | 0.0679 | 0.004 | 0.1541 | 0.0265 | 1.1260 | 0.1121 |
| Ceramic tile | 0.0993 | 0.0023 | 0.0015 | 0.0131 | 0.0970 | 0.0072 | 1.5470 | 0.6451 |
| GB16889-2008 | 0.25 | 0.05 | 0.1 | 0.15 | 4.5 | 0.3 | 100 | 40 |
* GB16889-2008 is national standard《Household refuse landfill sites contamination control standard》
From table, lead ion leaching concentration is significantly beyond country in the flying ash after the preliminary treatment of burning electricity generation factory
Standard GB16889-2008《Household refuse landfill sites contamination control standard》, mercury ion leaching concentration is on normal line, other
Heavy metal ion leaching concentration then meets standard requirement.It can be seen that the power plant flying dust has significant lead Leaching.Through this work
Ceramic tile is made in skill, after broken and press the leaching of HJ/T 300-2007 standards, it is found that its all leaching heavy metal concentration is remote
Less than GB16889-2008《Household refuse landfill sites contamination control standard》Limit value.
Note：China there is no the heavy metal ion limitation standard after incineration of refuse flyash recycling at present, herein still with country
Standard GB16889-2008《Household refuse landfill sites contamination control standard》Control it.
Chengdu refuse of refuse burning generating plant burns and uses mechanical grate incinerator, and tail gas treatment process is：Flue-gas denitrification
（SNCR)+semidry method depickling（White lime）+ activated carbon+bag-type dust.The dioxins concentration testing result table of incineration of refuse flyash
It is bright, the contained total toxic equivalent of bioxin in flying dust（TEQ）Concentration is 1.3 ~ 4.0 ng/g.There has been no corresponding solid at present in China
Bioxin limitation standard in body waste, but foreign standard can be used for reference, the quality of Germany of developed country, the U.S. and Japanese soil
Standard Zhong toxicity of dioxin equivalents are limited to 1.0 ng/g, it is known that toxicity of dioxin equivalent exceedes prosperity in incineration of refuse flyash
The standard limited value of national soil Zhong toxicity of dioxin equivalents.And we utilize thin ceramic made of this flying ash recycling
Brick , toxicity of dioxin equivalent is 0.03 ~ 0.1 ng/g, is limited far below soil Zhong toxicity of dioxin equivalent, realizes rubbish and burn
The thorough of noxious material dioxin is effectively decomposed in ashing.
Dioxin organic matter is the extremely strong material of toxicity, chloride high-molecular compound mainly in house refuse（As gathered
Vinyl chloride, chlorobenzene, pentachlorophenol Deng dioxin precursors）, in suitable temperature and in CuCl2、FeCl3Catalytic action
Lower and HCl, O2Reaction, generate dioxins materials.Relevant result of study show the optimal generation temperature of , bioxin for 300 DEG C ~
500℃.As temperature gradually rises in burning process, to 750 DEG C or so, the larger dioxins materials of molecular weight start point
Solution, will be decomposed, Ceramic Tiles sintering temperature is up to more than 1100 DEG C, in Ceramic Tiles completely to 1000 DEG C or so Shi dioxins materials
High-temperature sintering process Zhong bioxin is thoroughly decomposed into CO2And H2The innocuous substances such as O.
Example one：
1. principle is handled：Add water to and slurries are formed in flying dust, add composite chemical stabilizer, aqueous phase is to flying dust matter
The additional proportion of amount is 0.5L/kg, and the incineration flue gas of garbage burning factory, every kilogram of flying dust flue gas ventilation are passed through into above-mentioned slurries
Flow is 0.1m3/ min, chemically stable medicament with respect to the total additional proportion of flying dust quality in 5wt%, chemical stabilizer be sodium carbonate and
Sodium phosphate in mass ratio 1:1 compounding, the flying dust slurry after fully processing can be used as ceramic tile raw material after drying；
2. dispensing：Glued according to 10 parts of flying ash, 5 parts of green stone, 4 parts of interior wall marble, 10 parts of white sand, 12 parts of dry parting of company, 8#
8 parts of soil, 14 parts of 6# clays, 7 parts of part, day the pretty young woman's clay of Rong County clay 6,21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean mud, Guizhou aluminium ore 1
Part, the ratio dispensing of 0.5 part of water reducer；
3. grinding slurrying：According to every 100 tons of raw materials after weighing, 40 tons of water adds ball milling in big ball grinder, after ball milling
It is required that moil fineness is 0.6 ~ 1.0%（250 mesh sieves）；
4. iron removaling：Strengthen the iron removaling of mud when blowing simultaneously, the mud after iron removaling is put into combined filament in pulp storage tank and starched
Material；
It is 5. old：Mud is old 24 hours in pulp storage tank；
6. legal system of spraying powder is granulated：The moisture content of powder particles is 6.3-6.8%, and its particle diameter distribution is：Less than 40 mesh
（380 microns）Mass percent is 25-35%, 40 mesh to 140 mesh（380-109 microns）For 65-75%, less than 140 mesh
（109 microns）Be less than 2%, above percentage is by mass percentage；
7. shaping：Using pressure forming, shaped article thickness is 5.5mm；
8. high temperature biscuiting：Firing temperature is at 1105 DEG C, 40 minutes biscuiting cycles；
9. glazing stamp：After base substrate removing dust, water spray, then required ground-coat enamel, cover-coat enamel are applied, then by edging, after edging
With the newest printing ornament technology of ceramic industry-ink-jet printed；
10. glaze firing：About 1085 DEG C of temperature of glaze firing, about 45 minutes time；
11. selection is handled, packaging and storage.
Example two：
1. principle is handled：Add water to and slurries are formed in flying dust, add composite chemical stabilizer, aqueous phase is to flying dust matter
The additional proportion of amount is 0.3L/kg, and the incineration flue gas of garbage burning factory, every kilogram of flying dust flue gas ventilation are passed through into above-mentioned slurries
Flow is 0.2m3/ min, chemically stable medicament with respect to the total additional proportion of flying dust quality in 5wt%, chemical stabilizer be vulcanized sodium and
Disodium-hydrogen in mass ratio 1:1 compounding, the flying dust slurry after fully processing can be used as ceramic tile original after drying
Material；
2. dispensing：Glued according to 10 parts of flying ash, 5 parts of green stone, 4 parts of interior wall marble, 10 parts of white sand, 12 parts of dry parting of company, 8#
8 parts of soil, 14 parts of 6# clays, 7 parts of part, day the pretty young woman's clay of Rong County clay 6,21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean mud, Guizhou aluminium ore 1
Part, the ratio dispensing of 0.5 part of water reducer；
3. grinding slurrying：According to every 100 tons of raw materials after weighing, 40 tons of water adds ball milling in big ball grinder, after ball milling
It is required that moil fineness is 0.6 ~ 1.0%（250 mesh sieves）；
4. iron removaling：Strengthen the mud after the iron removaling of mud, iron removaling when blowing simultaneously and be put into combined filament in pulp storage tank starching
Material；
It is 5. old：Mud is old 24 hours in pulp storage tank；
6. legal system of spraying powder is granulated：The moisture content of powder particles is 6.3-6.8%, and its particle diameter distribution is：Less than 40 mesh
（380 microns）Mass percent 25-35%, 40 mesh to 140 mesh（380-109 microns）For 65-75%, less than 140 mesh（109
Micron）Less than 2%, above percentage is by mass percentage；
7. shaping：Using pressure forming, shaped article thickness is 5.5mm；
8. high temperature biscuiting：About 40 minutes biscuiting cycles, about 1105 DEG C of firing temperature；
9. glazing stamp：After base substrate removing dust, water spray, then apply required ground-coat enamel, cover-coat enamel.Then edging is passed through, after edging
With the newest printing ornament technology of ceramic industry-ink-jet printed；
10. glaze firing：About 1085 DEG C of temperature of glaze firing, about 45 minutes time；
11. selection is handled, packaging and storage.
Example three：
1. principle is handled：Add water to and slurries are formed in flying dust, add composite chemical stabilizer, aqueous phase is to flying dust matter
The additional proportion of amount is 0.3L/kg, and the incineration flue gas of garbage burning factory, every kilogram of flying dust flue gas ventilation are passed through into above-mentioned slurries
Flow is 0.3 m3/ min, chemically stable medicament with respect to the total additional proportion of flying dust quality in 3wt%, chemical stabilizer be vulcanized sodium,
Disodium-hydrogen and phosphoric acid in mass ratio 1:1:1 compounding, the flying dust slurry after fully processing can be used as making pottery after drying
Porcelain ceramic tile raw material；
2. dispensing：Glued according to 10 parts of flying ash, 5 parts of green stone, 4 parts of interior wall marble, 10 parts of white sand, 12 parts of dry parting of company, 8#
8 parts of soil, 14 parts of 6# clays, 7 parts of part, day the pretty young woman's clay of Rong County clay 6,21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean mud, Guizhou aluminium ore 1
Part, the ratio dispensing of 0.5 part of water reducer；
3. grinding slurrying：According to every 100 tons of raw materials after weighing, 40 tons of water adds ball milling in big ball grinder, after ball milling
It is required that moil fineness is 0.6 ~ 1.0%（250 mesh sieves）；
4. iron removaling：Strengthen the mud after the iron removaling of mud, iron removaling when blowing simultaneously and be put into combined filament in pulp storage tank starching
Material；
It is 5. old：Mud is old 24 hours in pulp storage tank；
6. legal system of spraying powder is granulated：The moisture content of powder particles is 6.3-6.8%, and its particle diameter distribution is：Less than 40 mesh
（380 microns）Mass percent 25-35%, 40 mesh to 140 mesh（380-109 microns）For 65-75%, less than 140 mesh（109
Micron）Less than 2%, above percentage is by mass percentage；
7. shaping：Using pressure forming, shaped article thickness is 6mm；
8. high temperature biscuiting：About 40 minutes biscuiting cycles, about 1105 DEG C of firing temperature；
9. glazing stamp：After base substrate removing dust, water spray, then apply required ground-coat enamel, cover-coat enamel.Then edging is passed through, after edging
With the newest printing ornament technology of ceramic industry-ink-jet printed；
10. glaze firing：About 1085 DEG C of temperature of glaze firing, about 45 minutes time；
11. selection is handled, packaging and storage.
Example four：
1. principle is handled：Add water to and slurries are formed in flying dust, add composite chemical stabilizer, aqueous phase is to flying dust matter
The additional proportion of amount is 0.7L/kg, and the incineration flue gas of garbage burning factory, every kilogram of flying dust flue gas ventilation are passed through into above-mentioned slurries
Flow is 0.4 m3/ min, for chemically stable medicament with respect to the total additional proportion of flying dust quality in 5wt%, chemical stabilizer is vulcanized sodium
With sodium carbonate in mass ratio 1:1 compounding, the flying dust slurry after fully processing can be used as ceramic tile raw material after drying；
2. dispensing：Glued according to 10 parts of flying ash, 5 parts of green stone, 4 parts of interior wall marble, 10 parts of white sand, 12 parts of dry parting of company, 8#
8 parts of soil, 14 parts of 6# clays, 7 parts of part, day the pretty young woman's clay of Rong County clay 6,21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean mud, Guizhou aluminium ore 1
Part, the ratio dispensing of 0.5 part of water reducer；
3. grinding slurrying：According to every 100 tons of raw materials after weighing, 40 tons of water adds ball milling in big ball grinder, after ball milling
It is required that moil fineness is 0.6 ~ 1.0%（250 mesh sieves）；
4. iron removaling：Strengthen the mud after the iron removaling of mud, iron removaling when blowing simultaneously and be put into combined filament in pulp storage tank starching
Material；
It is 5. old：Mud is old 24 hours in pulp storage tank；
6. legal system of spraying powder is granulated：The moisture content of powder particles is 6.3-6.8%, and its particle diameter distribution is：Less than 40 mesh
（380 microns）Mass percent 25-35%, 40 mesh to 140 mesh（380-109 microns）For 65-75%, less than 140 mesh（109
Micron）Less than 2%, above percentage is by mass percentage；
7. shaping：Using pressure forming, shaped article thickness is 6mm；
8. high temperature biscuiting：About 40 minutes biscuiting cycles, about 1105 DEG C of firing temperature；
9. glazing stamp：After base substrate removing dust, water spray, then apply required ground-coat enamel, cover-coat enamel.Then edging is passed through, after edging
With the newest printing ornament technology of ceramic industry-ink-jet printed；
10. glaze firing：About 1085 DEG C of temperature of glaze firing, about 45 minutes time；
11. selection is handled, packaging and storage.
Table 4：The each index content obtained using present invention method is as a result as follows：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Suppress green compact rupture strength (MPa) | 2.7 | 2.6 | 2.8 | 2.7 |
| Rupture strength (MPa) after green compact are dried | 9.3 | 9.2 | 8.8 | 8.6 |
| Ceramic Tiles thickness（mm） | 5.5 | 5.5 | 6 | 6 |
| Ceramic Tiles water absorption rate | 11.5 | 12.4 | 11.8 | 12.2 |
| The Ceramic Tiles modulus of rupture (MPa) | 18.6 | 17.2 | 19.3 | 17.8 |
Claims (9)
1. a kind of method that incineration of refuse flyash recycles production thin ceramic bricks, processing step includes Feedstock treating, dispensing, ball
Mill, iron removaling, old, spraying legal system powder granulation, shaping, drying, high temperature biscuiting, glazing stamp, glaze firing step, it is characterised in that：
(1) Feedstock treating described in is to add water to form slurries in flying dust, adds composite chemical stabilizer, aqueous phase is to flying dust
The additional proportion of quality is 0.3-1L/kg, and chemically stable medicament is 2-5wt% with respect to the additional proportion of flying dust quality；
(2) incineration flue gas of garbage burning factory is passed through into above-mentioned slurries, every kilogram of flying dust flue gas ventilation flow rate is 0.1-0.5m3/
Min, after reaction completely, dry flying dust slurry, you can as ceramic tile raw material.
2. the method that a kind of incineration of refuse flyash according to claim 1 recycles production thin ceramic bricks, it is characterised in that：Institute
The composite chemical stabilizer stated includes dissolvable sulfide, soluble phosphate, phosphoric acid, soluble carbonate salt.
3. the method that a kind of incineration of refuse flyash according to claim 2 recycles production thin ceramic bricks, it is characterised in that：Institute
The application method for the composite chemical stabilizer stated be above medicament two or more with random order respectively or all simultaneously add
Enter into slurries.
4. the method that a kind of incineration of refuse flyash according to claim 2 recycles production thin ceramic bricks, it is characterised in that：Institute
The dissolvable sulfide stated is selected from least one of vulcanized sodium, sodium thiosulfate.
5. the method that a kind of incineration of refuse flyash according to claim 4 recycles production thin ceramic bricks, it is characterised in that：Institute
The dissolvable sulfide stated is vulcanized sodium.
6. the method that a kind of incineration of refuse flyash according to claim 2 recycles production thin ceramic bricks, it is characterised in that：Institute
The soluble phosphate stated is selected from least one of disodium-hydrogen, sodium dihydrogen phosphate, sodium phosphate.
7. the method that a kind of incineration of refuse flyash according to claim 6 recycles production thin ceramic bricks, it is characterised in that：Institute
The soluble phosphate stated is disodium-hydrogen.
8. the method that a kind of incineration of refuse flyash according to claim 2 recycles production thin ceramic bricks, it is characterised in that：Institute
The soluble carbonate salt stated is selected from least one of sodium carbonate, sodium acid carbonate.
9. the method that a kind of incineration of refuse flyash according to claim 8 recycles production thin ceramic bricks, it is characterised in that：Institute
The soluble carbonate salt stated is sodium carbonate.
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Cited By (2)
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| CN107245167A (en) * | 2017-07-13 | 2017-10-13 | 浙江工业大学温州科学技术研究院 | A kind of compounded rubber reinforcing agent and its preparation method and application |
| EP4084958A4 (en) * | 2019-12-31 | 2024-02-21 | Seramic Mat Limited | Industrial solid waste based construction and technical ceramics |
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| CN106734099B (en) * | 2016-12-27 | 2018-07-31 | 重庆盎瑞悦科技有限公司 | Using the method for secondary material complex technique high temperature harmlessness disposing incineration of refuse flyash |
| CN108341624B (en) * | 2018-03-14 | 2019-08-09 | 清华大学 | A method of bituminous concrete is made using domestic garbage incineration flyash |
| CN109721333B (en) * | 2019-01-21 | 2022-04-01 | 江苏中宜生态土研究院有限公司 | Ceramic brick prepared from garbage fly ash and preparation method |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491096C (en) * | 2005-12-15 | 2009-05-27 | 上海应用技术学院 | Method for preparing veneer brick using fly ash |
| CN101176815B (en) * | 2007-11-15 | 2011-12-21 | 河海大学 | Method for stabilization processing refuse incineration flying ash |
| CN102303036B (en) * | 2011-07-06 | 2014-01-15 | 东江环保股份有限公司 | Alkali activated solidification and stabilization treatment method of refuse incineration fly ash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245167A (en) * | 2017-07-13 | 2017-10-13 | 浙江工业大学温州科学技术研究院 | A kind of compounded rubber reinforcing agent and its preparation method and application |
| CN107245167B (en) * | 2017-07-13 | 2019-10-29 | 浙江工业大学温州科学技术研究院 | A kind of compounded rubber reinforcing agent and its preparation method and application |
| EP4084958A4 (en) * | 2019-12-31 | 2024-02-21 | Seramic Mat Limited | Industrial solid waste based construction and technical ceramics |
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