CN105294156B - A kind of resource utilization method of domestic waste incineration residue sorting tailings - Google Patents
A kind of resource utilization method of domestic waste incineration residue sorting tailings Download PDFInfo
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- CN105294156B CN105294156B CN201510900440.7A CN201510900440A CN105294156B CN 105294156 B CN105294156 B CN 105294156B CN 201510900440 A CN201510900440 A CN 201510900440A CN 105294156 B CN105294156 B CN 105294156B
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- waste incineration
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- domestic waste
- resource utilization
- incineration residue
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- 238000004056 waste incineration Methods 0.000 title claims abstract description 46
- 239000010791 domestic waste Substances 0.000 title claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 66
- 239000003595 mist Substances 0.000 claims abstract description 32
- 239000011381 foam concrete Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 19
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 18
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 11
- 239000000292 calcium oxide Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 41
- 239000002002 slurry Substances 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000004088 foaming agent Substances 0.000 claims description 16
- 239000003638 reducing agent Substances 0.000 claims description 16
- 238000007792 addition Methods 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 15
- 239000010813 municipal solid waste Substances 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- -1 stirs Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 5
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 5
- 238000010348 incorporation Methods 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 229940044172 CALCIUM FORMATE Drugs 0.000 claims description 3
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Tris Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 235000011148 calcium chloride Nutrition 0.000 claims description 3
- 235000019255 calcium formate Nutrition 0.000 claims description 3
- 239000004281 calcium formate Substances 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- SMYKVLBUSSNXMV-UHFFFAOYSA-J aluminum;tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3] SMYKVLBUSSNXMV-UHFFFAOYSA-J 0.000 claims 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 5
- 239000004567 concrete Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000011404 masonry cement Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- VUKAUDKDFVSVFT-UHFFFAOYSA-N 2-[6-[4,5-bis(2-hydroxypropoxy)-2-(2-hydroxypropoxymethyl)-6-methoxyoxan-3-yl]oxy-4,5-dimethoxy-2-(methoxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)-5-methoxyoxane-3,4-diol Chemical group COC1C(OC)C(OC2C(C(O)C(OC)C(CO)O2)O)C(COC)OC1OC1C(COCC(C)O)OC(OC)C(OCC(C)O)C1OCC(C)O VUKAUDKDFVSVFT-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 210000002700 Urine Anatomy 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N ethanolamine Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The present invention relates to a kind of resource utilization method of domestic waste incineration residue sorting tailings, domestic waste incineration residue is sorted into tailings handle by managing fine grinding and utilize heat smoke progress convection drying, the clinker micro mist obtained and cement Forced Mixing, the processes such as oxygen, normal temperature maintenance are steamed through slurrying, system bubble, mixed bubble, moulding by casting, low temperature, are prepared into foam concrete block or insulation material.This invention removes the negative effect of free calcium oxide and magnesia to foam concrete quality, improves the final strength for steeping last concrete product；By the hydrated product collective effect with cement, micro harmful heavy metal is solidified, tailings product is not produced secondary pollution to environment；Clinker adding proportion of the present invention is high, recycling and the scale processing of waste incineration slag sorting tailings can be achieved, technique is simple, and product cost is low, has good economic benefit and environmental benefit.
Description
Technical field
The present invention relates to belong to solid waste resource recovery field of comprehensive utilization, more particularly to a kind of domestic waste incineration
Slag sorts the resource utilization method of tailings.
Background technology
Domestic garbage burning electricity generation is used widely in China, the advantage is that：Make rubbish volume reduction 70% after burning
More than, can solve the problems such as current garbage loading embeading cost of land is high, can not meet to fill capacity requirement, height caused by waste incineration
Warm combustion gas recovering energy source and secondary use.Dregs of incinerator is byproduct caused by Refuse Incineration Process, is mainly included on fire grate
Residue and account for the 20%-30% of crude waste quality from the particulate matter to be dropped between fire grate, its yield.Because rubbish is society
The terminal of metallics in living, fine grain clinker is considered as ore dressing raw material, can be by it using current dry or wet technique
In metal (such as iron, aluminium, copper, zinc, good fortune, lead and gold, silver) sort out, this for reduce clinker environmental impact, ensure
Normal circulation circulation of the metallic element in natural environment is significant, and the tailings pretreatment of waste incineration at present is general
Way.But the clinker dry separation technique either using broken-magnetic separation-vortex flow sorting process as representative, or with broken
Broken-magnetic separation-gravity-floatation technique is the clinker wet split technique of representative, the remaining tailings process problem after sorting be present.
Most waste incineration fields directly fill the tailings after sorting as general solid waste, and not only waste of resource also takes up a large amount of soil for this
Ground.Therefore, how to realize that its scale utilizes is the great difficult problem currently faced.
On the utilization of waste incineration slag, the country has part researcher to be studied.Patent of invention CN 1331796
A discloses a kind of method that masonry cement is produced using domestic waste incineration residue, and physical property can reach masonry cement GB/
T3183-2003 standards, but the dosage of dregs of incinerator is not high, less than 15%.The A of patent of invention CN 101386480 disclose one
The method that kind produces Portland clinker using domestic waste incineration residue, on the basis of existing new dry process rotary kiln stove
Make improvements, substitute part of clay and lime stone with clinker to produce Portland clinker, but dregs of incinerator is brought into
Harmful constituent (alkali, chlorine etc.) in raw material still can adversely affect to clinker burning process after treatment.Patent of invention
CN 1558030A disclose a kind of method of making civil work engineering structure layer using domestic incinerator slag, using dregs of incinerator as
Gather materials for town road base course or substitute Tu Yuan as covering material for house refuse landfill site, part that clinker contains weighs
Metal easily causes secondary pollution, exist on environment it is potential influence, and these heavy metal substances and wherein content is unstable
Fixed free calcium oxide and free magnesium, influence whether the intensity of pavement construction material, durability again in terms of physical chemistry
Difference.
At present, China is in materials for wall period of reform, and cellular concrete product is with its lightweight, insulation (heat-insulated), section
The good characteristics such as energy, which turn into, can substitute one of material of clay brick.Most foam concrete binder materials are using water
Mud and flyash are major ingredient to produce, and building block product drying shrinkage is big after the complete aquation of cement, and it is higher to prepare cost.Give full play to rubbish
The activity of tailings is burned, waste incineration is sorted into tailings fine powder and cement mixing, then coordinates additive, prepares porous material foam
Concrete, this can provide new way for production high quality and low cost foam concrete, also fully realize garbage slag sorting
Tailings scale utilizes, and is not likely to produce secondary pollution, is to achieve many things at one stroke.
The content of the invention
Problem to be solved by this invention is to overcome the shortcomings of the prior art, there is provided a kind of domestic waste incineration residue
Sort the resource utilization method of tailings.
Concrete scheme is as follows：
A kind of resource utilization method of domestic waste incineration residue sorting tailings, comprises the following steps：
Fine grinding：Remaining tailings progress after the sorted iron of garbage burning factory clinker, aluminium, copper, zinc, gold, silver metal is levigate,
Convection drying is carried out using heat smoke, obtains sorting tailings micro mist；
It is prepared by compound：Sorting tailings micro mist is subjected to dry type mixing with cement, early strength agent in mixer；
It is prepared by foam：Foaming agent is diluted with water, with foaming mechanism for foam with standby；
It is prepared by cement slurry：Fiber, water reducer and water are uniformly dispersed in agitator, add the compound prepared,
Obtain cement slurry；
Foam slurry prepares and shaping：The foam prepared is added in cement slurry, stirs, obtains foam slurry,
It is injected into die for molding, foam slurry Self-leveling；
Low temperature is steam-cured：The mould for being marked with foam slurry is placed in steam box, room temperature is down to after steam-cured, after base substrate solidification
Mould is removed；
Normal temperature conserves：Idiosome after mould is removed is placed on normal temperature curing box and stands maintenance, you can obtains foam coagulation
Earth building blocks or insulation material.
Its further technical scheme is that the tailings progress is levigate, and particle size range is specific surface area 400-700cm2/g；
Optional, sort tailings micro mist moisture content≤1%, free state CaO and MgO total content<1%.
Its further technical scheme is that described cement is Portland cement, sulphate aluminium cement or iron aluminic acid
Salt cement；
Optional, the mass ratio of cement and sorting tailings micro mist is 3:2-19:1；
Optional, described early strength agent is one in sodium metasilicate, sodium sulphate, calcium chloride, triethanolamine, calcium formate, urea
Kind or more than one；
Optional, early strength agent adding proportion is sorting tailings micro mist and the 1%-3% of cement butt quality total amount；
Optional, in described compound preparation process, incorporation time 5-10min.
Its further technical scheme is that described foaming agent is diluted with water to 30-50 times.
Its further technical scheme is, in described cement slurry preparation process, ratio of mud 0.35-0.55, and stirring
Time is 3-10min, and mixer rotating speed is 300-800r/min.
Its further technical scheme is, described water reducer be it is a kind of in naphthalene water reducer, poly carboxylic acid series water reducer or
Two kinds of mixing；
Optional, the addition of water reducer is sorting tailings micro mist and the 0.1%-0.2% of cement butt quality total amount.
Its further technical scheme is that described fiber is polypropylene fibre, alkali-resistant glass fibre, vinal
Middle one or more；
Optional, the addition of fiber is sorting tailings micro mist and the 0.5%-1.5% of cement butt quality total amount.
Its further technical scheme is that foam adding proportion is the 5%-15% of cement slurry gross mass.
Its further technical scheme is that described low temperature steam curing temperature is 40 DEG C -55 DEG C, humidity >=65%, steam-cured 8-
15 hours；
Optional, it is down to room temperature according to rate of temperature fall≤15 DEG C/h speed after the steam-cured end of low temperature.
Its further technical scheme is that the normal temperature curing temperature is 20 DEG C -27 DEG C, humidity >=65%, curing time
For 8-20 days；
It is optional, material after size is cut in advance as requested, is placed into normal temperature curing box and conserved.
Tailings progress is levigate, and optimized scope is specific surface area 400-700cm2/g.Because specific surface area<400cm2/g
When be unfavorable in tailings (f-CaO+f-MgO) abatement, be also unfavorable for the hydration of tailings；If specific surface area>700cm2/ g is right
Tailings aquation and (f-CaO+f-MgO) abatement humidification no longer substantially increase and waste the energy.
Ground slag after levigate is dried using heat smoke, realizes that wherein free calcium oxide and free magnesium are stable
Change, obtain sorting tailings micro mist, its moisture content≤1%, (f-CaO+f-MgO) content<1%.
Waste incineration tailings micro mist is 5-10min with cement, early strength agent dry type mixing time, can reach preferably mixing effect
Fruit.
Cement：The ratio for sorting tailings micro mist is 3:2-19:1, it is to ensure the strong of product that wherein cement, which accounts for most of,
Degree, cement content is higher, and product strength is bigger.
Early strength agent is that the one or two or more kinds in sodium metasilicate, sodium sulphate, calcium chloride, triethanolamine, calcium formate, urea are appointed
Meaning ratio is compound, is mainly used for improving the intensity of concrete, and adding proportion is cement and waste incineration tailings micro mist butt matter
Measure the 1-3% of total amount, you can reach early strong effect.
Foaming agent is diluted with water as 30-50 times, and foaming agent is common foamed concrete CBA or physics on the market
Foaming agent.
The ratio of mud in cement mortar blender is 0.35-0.55, stirs 3-10min, mixer rotating speed>300r/min, obtain
The cement slurry good to flow regime, the too high waste energy of rotating speed.
Beneficial effect：(1) what the tailings after waste incineration slag is sorted was carried out levigate processing and dried using heat smoke,
Utilize CO in flue gas2The stabilization of free calcium oxide (f-CaO) and free magnesium (f-MgO) in dregs of incinerator micro mist is realized, is subtracted
Weak f-CaO and f-MgO bulking effect, eliminate its negative effect to foam concrete quality.
(2) domestic waste incineration residue sorts tailings after levigate, and its pozzolanic properties is excited, and it is mixed to improve bubble end
Coagulate the final strength of native product.
(3) acid-base value of domestic waste incineration residue is adjusted using the additive of foam concrete preparation process addition, is increased
Adhesive force between strong material, the intrinsic activity of domestic waste incineration residue is excited, then by common with the hydrated product of cement
Effect, micro harmful heavy metal is solidified, tailings product is not produced secondary pollution to environment.
(4) tailings after being sorted using domestic waste incineration residue prepares foam concrete, and clinker adding proportion is high, can be real
The recycling of existing waste incineration slag sorting tailings and scale processing, technique is simple, and product cost is low, has well
Economic benefit and environmental benefit.
Brief description of the drawings
Fig. 1 is a kind of recycling side of urban domestic garbage incinerator slag sorting tailings provided in an embodiment of the present invention
The process chart of method.
Embodiment
Technical solution of the present invention is further elaborated with reference to the accompanying drawings and examples.Unreceipted specific skill in embodiment
Art or condition person, carried out according to the technology described by document in the art or condition or according to product description.Examination used
Agent or the unreceipted production firm person of instrument, being can be by the conventional products of acquisition purchased in market.
Shown in Fig. 1 is a kind of process chart of the resource utilization method of domestic waste incineration residue sorting tailings,
By the steam-cured process such as with shaping, normal temperature maintenance of fine grinding, mixing, slurrying, system bubble, mixed bubble, moulding by casting, low temperature, by life rubbish
Foam concrete block or insulation material is made in rubbish dregs of incinerator sorting tailings.
Embodiment 1
Foam concrete block is prepared as follows：
1) fine grinding：By garbage burning factory clinker it is sorted tap a blast furnace, remaining tailings enters after the metal such as aluminium, copper, zinc, gold, silver
Row is levigate, and granularity is specific surface area 700cm2/g；Convection drying is carried out using heat smoke to the ground slag after levigate, sorted
Tailings micro mist, moisture content 1%, free state CaO and content of MgO<1%.
2) prepared by compound：Sorting tailings micro mist is subjected to dry type mixing with cement, early strength agent in proportion, incorporation time is
10min.Cement uses Portland cement；Sort tailings micro mist：The ratio of cement is 3:7；Early strength agent is sodium metasilicate and three
Monoethanolamine presses 1：1 is compound, and adding proportion is cement with sorting the 1% of tailings micro mist butt total amount.
3) prepared by foam：Foaming agent is diluted with water 50 times and gentle agitation is uniform, then uses foaming agent dilution
Cement foam maker prepares foam by compressed air method, and foaming agent is hydrogen peroxide.
4) prepared by cement slurry：The ratio of mud 0.35, the stirring of water, fiber and water reducer is allowed to scattered, addition mixes in proportion
The compound got togather, 3min is stirred, mixer rotating speed 300r/min, obtains the good foam slurry of flow regime.Wherein, diminishing
Agent is poly carboxylic acid series water reducer, and addition is the 0.2% of cement and waste incineration tailings butt total amount；Fiber is that alkali-proof glass is fine
Dimension, addition are the 0.5% of cement and waste incineration tailings butt total amount.
5) foam slurry is prepared and is molded：5% ratio by the foam of preparation in cement slurry gross mass, is added to water
Stir in slurry body and persistently, foam slurry is then injected into die for molding, foam slurry Self-leveling.
6) low temperature is steam-cured：It is placed on together with mould in steam box, 40 DEG C of temperature, steam-cured 8 in the environment of humidity >=65%
Hour；Room temperature is down to according to 15 DEG C/h rate of temperature fall, base substrate is frozen into foam concrete block mould after solid after steam-cured
Remove.
7) normal temperature conserves：Mould is placed on normal temperature curing box (20 DEG C of temperature, humidity >=65%) and stands 8 days after removing, obtain
Obtain foam concrete block.
The foam concrete block obtained is detected, in manufacturing process, clinker adding proportion up to 30%, production
Foam concrete block apparent density 680kg/m3, intensity meets building material industry《JC/T1062-2007 foam concrete block marks
It is accurate》It is required that；And foam concrete heavy metal limit dissolution and the surface dipping dissolution limit meet《GB/T14848-93 underground water
Quality standard》, secondary pollution is not produced to environment.
Embodiment 2
Foam concrete block is prepared as follows：
1) fine grinding：By garbage burning factory clinker it is sorted tap a blast furnace, remaining tailings enters after the metal such as aluminium, copper, zinc, gold, silver
Row is levigate, and granularity is specific surface area 400cm2/g；Convection drying is carried out using heat smoke to the ground slag after levigate, sorted
Tailings micro mist, moisture content 0.5%, free state CaO and content of MgO<1%.
2) prepared by compound：Sorting tailings micro mist is subjected to dry type mixing with cement, early strength agent in proportion, incorporation time is
5min.Cement uses Portland cement；Sort tailings micro mist：The ratio of cement is 4:6；Early strength agent is calcium chloride, addition
Ratio is cement with sorting the 3% of tailings micro mist butt total amount.
3) prepared by foam：Foaming agent is diluted with water 30 times and gentle agitation is uniform, then uses foaming agent dilution
Cement foam maker prepares foam by compressed air method, and foaming agent is hydroxypropyl methyl cellulose ether.
4) prepared by cement slurry：The ratio of mud 0.55, the stirring of water, fiber and water reducer is allowed to scattered, addition mixes in proportion
The compound got togather, 10min is stirred, mixer rotating speed 800r/min, obtains the good foam slurry of flow regime.Wherein, subtract
Aqua is poly carboxylic acid series water reducer, and addition is the 0.1% of cement and waste incineration tailings butt total amount；Fiber is polyvinyl alcohol
Fiber, addition are the 1.5% of cement and waste incineration tailings butt total amount.
5) foam slurry is prepared and is molded：15% ratio by the foam of preparation in cement slurry gross mass, is added to
Stir in cement slurry and persistently, foam slurry is then injected into die for molding, foam slurry Self-leveling.
6) low temperature is steam-cured：It is placed on together with mould in steam box, 55 DEG C of temperature, steam-cured 15 in the environment of humidity >=65%
Hour；Room temperature is down to according to 10 DEG C/h rate of temperature fall, base substrate is frozen into foam concrete block mould after solid after steam-cured
Remove.
7) normal temperature conserves：Mould remove after cut by size, be then placed within normal temperature curing box (26 DEG C of temperature, it is wet
Degree >=65%) 10 days are stood, obtain foam concrete block.
The foam concrete block obtained is detected, in manufacturing process, clinker adding proportion up to 40%, production
Foam concrete block apparent density 580kg/m3, intensity meets building material industry《JC/T1062-2007 foam concrete block marks
It is accurate》It is required that；And foam concrete heavy metal limit dissolution and the surface dipping dissolution limit meet《GB/T14848-93 underground water
Quality standard》, secondary pollution is not produced to environment.
Embodiment 3
Insulation material is prepared as follows：
1) fine grinding：By garbage burning factory clinker it is sorted tap a blast furnace, remaining tailings enters after the metal such as aluminium, copper, zinc, gold, silver
Row is levigate, and granularity is specific surface area 500cm2/g；Convection drying is carried out using heat smoke to the ground slag after levigate, sorted
Tailings micro mist, moisture content 0.3%, free state CaO and content of MgO<1%.
2) prepared by compound：Sorting tailings micro mist is subjected to dry type mixing with cement, early strength agent in proportion, incorporation time is
7min.Cement uses Portland cement；Sort tailings micro mist：The ratio of cement is 1:19；Early strength agent is sodium sulphate and urine
Element presses 1：1 is compound, and adding proportion is cement with sorting the 2% of tailings micro mist butt total amount.
3) prepared by foam：Foaming agent is diluted with water 40 times and gentle agitation is uniform, then uses foaming agent dilution
Cement foam maker prepares foam by compressed air method, and foaming agent is Tea Saponin.
4) prepared by cement slurry：The ratio of mud 0.45, the stirring of water, fiber and water reducer is allowed to scattered, addition mixes in proportion
The compound got togather, 7min is stirred, mixer rotating speed 500r/min, obtains the good foam slurry of flow regime.Wherein, diminishing
Agent is poly carboxylic acid series water reducer, and addition is the 0.15% of cement and waste incineration tailings butt total amount；Fiber is that polypropylene is fine
Dimension, addition are the 1% of cement and waste incineration tailings butt total amount.
5) foam slurry is prepared and is molded：10% ratio by the foam of preparation in cement slurry gross mass, is added to
Stir in cement slurry and persistently, foam slurry is then injected into die for molding, foam slurry Self-leveling.
6) low temperature is steam-cured：It is placed on together with mould in steam box, temperature 50 C, steam-cured 12 in the environment of humidity >=65%
Hour；Room temperature is down to according to 5 DEG C/h rate of temperature fall after steam-cured, base substrate removes mould after being frozen into solid.
7) normal temperature conserves：Mould is placed on normal temperature curing box (27 DEG C of temperature, humidity >=65%) and stands 20 days after removing, obtain
Obtain insulation material.
The insulation material obtained is detected, its compression strength 0.4MPa, thermal conductivity factor is 0.05w/ (m.K), is prevented
Fiery performance is that A levels are non-ignitable, and performance meets《Civil buildings outer heat preservation system and decoration of exterior wall fire prevention temporary provisions》Requirement, be used for
Wall thermal insulating fire-blocking belt.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (16)
- A kind of 1. resource utilization method of domestic waste incineration residue sorting tailings, it is characterised in that：Comprise the following steps：Fine grinding：Remaining tailings after the sorted iron of garbage burning factory clinker, aluminium, copper, zinc, gold, silver metal is subjected to levigate, granularity Scope is specific surface area 400-700cm2/ g, convection drying is carried out using heat smoke, obtain sorting tailings micro mist, described sorting Tailings micro mist moisture content≤1%, free state CaO and MgO total content<1%；It is prepared by compound：Sorting tailings micro mist is subjected to dry type mixing with cement, early strength agent in mixer；Described early strength agent For one or more of sodium metasilicate, sodium sulphate, calcium chloride, triethanolamine, calcium formate, urea；It is prepared by foam：Foaming agent is diluted with water, with foaming mechanism for foam with standby；It is prepared by cement slurry：Fiber, water reducer and water are uniformly dispersed in agitator, the compound prepared is added, obtains Cement slurry；Foam slurry prepares and shaping：The foam prepared is added in cement slurry, stirs, foam slurry is obtained, by it Inject die for molding, foam slurry Self-leveling；Low temperature is steam-cured：The mould for being marked with foam slurry is placed in steam box, room temperature is down to after steam-cured, by mould after base substrate solidification Tool is removed；Normal temperature conserves：Base substrate after mould is removed is placed on normal temperature curing box and stands maintenance, you can obtains foam concrete and builds Block or insulation material.
- 2. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described cement is Portland cement, sulphate aluminium cement or ferrous aluminate cement.
- 3. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：The mass ratio of cement and sorting tailings micro mist is 3:2-19:1.
- 4. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Early strength agent adding proportion is sorting tailings micro mist and the 1%-3% of cement butt quality total amount.
- 5. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：In described compound preparation process, incorporation time 5-10min.
- 6. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described foaming agent is diluted with water to 30-50 times.
- 7. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：In described cement slurry preparation process, ratio of mud 0.35-0.55, mixing time 3-10min, mixer rotating speed For 300-800r/min.
- 8. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described water reducer is one or two kinds of mixing in naphthalene water reducer, poly carboxylic acid series water reducer.
- 9. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：The addition of described water reducer is sorting tailings micro mist and the 0.1%-0.2% of cement butt quality total amount.
- 10. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described fiber is more than one in polypropylene fibre, alkali-resistant glass fibre, vinal.
- 11. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：The addition of described fiber is sorting tailings micro mist and the 0.5%-1.5% of cement butt quality total amount.
- 12. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described foam adding proportion is the 5%-15% of cement slurry gross mass.
- 13. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Described low temperature steam curing temperature is 40 DEG C -55 DEG C, humidity >=65%, steam-cured 8-15 hour.
- 14. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：After the steam-cured end of low temperature room temperature is down to according to rate of temperature fall≤15 DEG C/h speed.
- 15. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：The normal temperature curing temperature is 20 DEG C -27 DEG C, humidity >=65%, and curing time is 8-20 days.
- 16. a kind of resource utilization method of domestic waste incineration residue sorting tailings according to claim 1, its feature It is：Material after size is cut in advance as requested, is placed into normal temperature curing box and conserved.
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| CN110370449A (en) * | 2019-08-02 | 2019-10-25 | 宇创环保产业有限公司 | A kind of domestic garbage burning electricity generation clinker regenerated aggregate production light wall board system |
| CN110757618A (en) * | 2019-10-31 | 2020-02-07 | 梁品 | Method for producing baking-free bricks by comprehensively utilizing furnace slag |
| CN114394800B (en) * | 2022-01-19 | 2022-11-11 | 中国科学院城市环境研究所 | Method for resource utilization of sludge biochar |
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| CN102815904A (en) * | 2012-08-24 | 2012-12-12 | 李桓宇 | Foam concrete block produced with waste ash and manufacturing method thereof |
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