CN102092992A - Concrete port brick prepared from domestic garbage incinerator slag and preparation method thereof - Google Patents
Concrete port brick prepared from domestic garbage incinerator slag and preparation method thereof Download PDFInfo
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- CN102092992A CN102092992A CN2010105392330A CN201010539233A CN102092992A CN 102092992 A CN102092992 A CN 102092992A CN 2010105392330 A CN2010105392330 A CN 2010105392330A CN 201010539233 A CN201010539233 A CN 201010539233A CN 102092992 A CN102092992 A CN 102092992A
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- 239000002893 slag Substances 0.000 title claims abstract description 36
- 239000011449 brick Substances 0.000 title claims abstract description 35
- 239000004567 concrete Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000010813 municipal solid waste Substances 0.000 title abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 17
- 238000004056 waste incineration Methods 0.000 claims description 39
- 239000010791 domestic waste Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000000498 ball milling Methods 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 12
- 238000000748 compression moulding Methods 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 229960004418 trolamine Drugs 0.000 claims description 3
- 235000011148 calcium chloride Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000010169 landfilling Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 20
- 229910001385 heavy metal Inorganic materials 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011404 masonry cement Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000011401 Portland-fly ash cement Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- -1 sodium sulfate compound Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a concrete port brick prepared from domestic garbage incinerator slag and a preparation method thereof. In the method disclosed by the invention, the strength of the concrete port brick can be increased by improving the proportions of raw materials and the technological parameters. The concrete port brick comprises the following raw materials: 18.1%-40.9% of domestic garbage incinerator slag, 12.9%-18.1% of cement, 12.5%-30.9% of gravel, 28.1%-43.9% of coarse sand and 2.5%-5.9% of additive. The technology provided by the invention can provide a technical way of solving the disposal problem of the currently increasing domestic garbage incinerator slag, thus the resource utilization of the domestic garbage incinerator slag can be realized; and the occupied land and the pollutions of the ecological environment can be reduced because the emission, accumulation and landfilling of the domestic garbage incinerator slag can be lowered. The method disclosed by the invention is characterized by higher resource utilization rate of domestic garbage incinerator slag, simple technology, low operating cost and the like, and is convenient to operate.
Description
Technical field
The invention belongs to inorganic materials, solid waste resource recovery comprehensive utilization field, be meant that specifically recycling urban domestic garbage incinerator slag prepares concrete quay brick and preparation method thereof.
Background technology
Mainly to seek in addition landfill of solution space, the recycling rate is extremely low in the processing of the most of domestic wastes of China.Because the city can be fewer and feweri more and more high with the landfill cost with the landfill place, the burning city domestic garbage power station is applied in China city.Along with the increase of burning city domestic garbage amount, will produce a large amount of domestic waste incineration residues.Dregs of incinerator is the byproduct in burning city domestic garbage power station one, domestic waste incineration residue generally comprises incineration residue residual on the fire grate and the thin ash from dropping between fire grate, mainly constitute, in burning process, assemble heavy metal and chlorions such as micro-Cd, Hg, Pd, As, Cr, Se, Zn by alkalies and alkaline earth.As not handled, as acid rain, dissolution rate is very fast and stripping quantity is bigger under acidic conditions for above-mentioned heavy metal, tends to exceed the standard that China's heavy metal leaches toxicity GB5085.3-1996, and ecotope is worked the mischief.Along with the quickening of burning city domestic garbage power station construction speed, dregs of incinerator solid waste generation is more and more.
How turning waste into wealth, the change refuse is a resource, widens the resource utilization of urban domestic garbage incinerator slag and efficiently utilizes approach, has become the hot issue that urban development and environmental protection are paid close attention to.
At present the recycling approach of urban domestic garbage incinerator slag mainly contains in the world: the 1. alternative aggregate on petroleum pitch road surface; 2. cement or concrete alternative aggregate; 3. landfill yard covering material; 4. packing material of embankment, roadbed etc. etc.Utilizing the position if consider it, mainly is to be used as land cement based and asphaltic base engineering (as road, parking lot etc.) and marine building engineering (as artificial submerged reef, shore protection etc.).Because dregs of incinerator will cause cost to raise through pre-treatment, downgrade, therefore large-scale popularization is not used.
Domestic up to now existing four pieces about utilizing the patent of urban domestic garbage incinerator slag:
Number of patent application is the production technique that 200410066443.7 Chinese patent discloses a kind of life garbage incinerator slag aggregate, the outstanding finger of this method is production technique of gathering materials for building with this slag through manipulation of regeneration, comprise the steps: charging, magnetic separation de-iron, screening, selection by winnowing, fragmentation, clear up, eddy current separation etc., the production process complexity, poor operability is unfavorable for realizing industrialization.
Application number is that the Chinese invention patent of 200410016076.X discloses the method that a kind of domestic waste incineration residue is made the civil engineering structural sheet.This method is separated ferrous metal in the magnetic separation mode earlier, makes particle size sorting then, promptly can be used as the gather materials base course that is used for town road or alternative Tu Yuan as covering material for house refuse landfill site less than the screen underflow of 19mm particle diameter; At last screen underflow being paved is made into town road base course or household refuse landfill sites covered structure layer, carries out compacting after the watering.The slag rate of recovery is higher, but heavy metal wherein brings hidden danger can for the environment of surface water, underground water and periphery, very likely causes secondary pollution.
Application number is that 200510120665.7 Chinese invention patent discloses a kind of method of utilizing domestic waste incineration residue to produce masonry cement.The physicals of using the masonry cement of this method production all can reach masonry cement GB/T3183-2003 standard, but the consumption of domestic waste incineration residue is not high, is about 15%.
Application number is that 200810199156.1 Chinese invention patent discloses a kind of method of utilizing domestic waste incineration residue to produce Portland clinker.This method makes improvements on the basis of existing new type nonaqueous cement kiln, produce Portland clinker with slag to replace partial clay and Wingdale, unwanted component (alkali, chlorine etc.) in the raw material is unavoidable after treatment still can to affect to the clinker burning process but dregs of incinerator is brought into.
Summary of the invention
Purpose of the present invention is exactly in order to solve above-mentioned the deficiencies in the prior art, a kind of environmental protection is provided, convenient, practical urban domestic garbage incinerator slag prepares the technology of concrete quay brick, be as the mineral addition material with the urban domestic garbage incinerator slag, after ball milling screening and cement, rubble, after stirring, the aqueous solution of river sand and admixture makes, this technology can efficiently be handled the urban domestic garbage incinerator slag, and the intensity of the concrete quay brick of preparation satisfies " concrete solid brick and decorative block " (NY/T671-2003) normal intensity grade MU15 technical requirements.Urban domestic garbage incinerator slag utilization ratio can reach 40%, utilizes dregs of incinerator system concrete quay body brick, and it is bigger to eat the quantity of slag, and technology is simple, and product cost is low.Concrete quay brick heavy metal leaching amount does not exceed standard, and qualified to the environmentAL safety Journal of Sex Research.
Purpose of the present invention is achieved through the following technical solutions:
With concrete quay brick of domestic waste incineration residue preparation and preparation method thereof, comprise the steps:
(1) by percentage to the quality, the bottom raw material mixes by following proportioning, adds water and stirs;
Domestic waste incineration residue 16.1%～40.9%
Cement 12.9%～18.1%
Rubble 12.5%～30.9%
Coarse sand 28.1%～43.9%
Admixture (solid) 2.5%～5.9%
Wherein said admixture mixes with other components in the raw material after being made into the aqueous solution again, and by percentage to the quality, bottom raw material water content is 8%～12%;
(2) by percentage to the quality, the surface layer raw material mixes by following proportioning, adds water and stirs;
Cement 18.9%～30.1%
Fine sand 68.9%～80.1%
Described surface layer raw material water content is 8%～12%;
(3) bottom raw material and surface layer raw material are pressed mass ratio (11～17): (2～3) layering compression moulding promptly makes the concrete quay brick through maintenance again.
Described domestic waste incineration residue also passes through ball-milling processing, and described ball milling is a dry ball milling, and the ball milling time is 2～5 minutes.
Described domestic waste incineration residue mainly is the unburnt flammable organism of non-flammable inorganics and part, derive from glass in the rubbish, finishing foreign material, bottle, pottery, fragment of brick, slag etc., also contain organism such as certain plastics, metallics and imperfect combustion stationery, fiber, wood.In the preparation, according to practical situation, if domestic waste incineration residue exists bigger stink and remaining glass, finishing foreign material, bottle, pottery, fragment of brick, plastics, metallics and imperfect combustion stationery, fiber, wood etc., this domestic waste incineration residue also comprises the pre-treatment of drying, deodorizing and the removal of impurities of sieving before ball milling, wherein, dry and deodorizing is carried out simultaneously, the drying of domestic waste incineration residue can be by obtaining its tiling airing, and stink can be accompanied by the drying of slag and significantly reduces; This pretreated removal of impurities of sieving was a 3mm sieve, with removals such as glass, finishing foreign material, bottle, pottery, fragment of brick, plastics, metallics and imperfect combustion stationery, fiber, wood, took the following slag of 3mm.Some raw material need pass through above-mentioned whole flow processs, and some then may only need 1～2 road flow process, carries out ball milling, screening then, and various starting material store warehouse-in respectively, require metering according to prescription.Described domestic waste incineration residue is also handled through screening through after the ball-milling processing, and the domestic waste incineration residue after the described ball milling screening is the following slag of granularity 0.3mm.
Described admixture is one or two or more kinds compound in water glass, sodium sulfate, sodium hydroxide, calcium chloride and the trolamine, and this admixture mainly is to be used to improve concrete intensity.
Described layering compression moulding is to fill in the bottom raw material earlier, suppresses, and evenly fills in the surface layer raw material afterwards on the bottom raw material that suppresses, and suppresses once more, and forming pressure is at 15～22Mpa.
Described compacting utilizes hydropress to adopt two-sided pressing mode to carry out.
Described maintenance is natural curing.
The concrete quay brick of method for preparing is the bilayer structure with bottom and surface layer, and described underlayer thickness is 75～77mm, and surface thickness is 3～5mm.The raw material overall control prepares by standard harbour brick thickness 80mm about 3700g, the too thin easy delamination of surface layer, and wear resistance also can not get guaranteeing that the intensity of the too thick then whole brick of surface layer is affected.
According to industry requirement, the quality of described cement meet national standard " silicate cement, ordinary Portland cement " (GB175-1999), " Portland blast, Portland pozzolana cement and Portland fly ash cement " (GB1344-1999), " composite Portland cement " requirement (GB12958-1999).
The quality of described rubble meets (GB/T14685-2001) requirement of standard II class of national standard " cobble for building, rubble "; The quality of described coarse sand and fine sand meets (GB/T5483-1996) requirement of standard II class of national standard " building sand ".
Principle of the present invention: utilize admixture to regulate the potential of hydrogen of domestic waste incineration residue, corrode its surface, strengthen the sticking power between the material, excite the activity of domestic waste incineration residue, and jointly micro-harmful heavy metal is solidified with the hydrated product of cement, make the requirement that can be up to state standards of the concrete quay brick of production; The heavy metal leaching amount of concrete quay brick can not exceeded standard, and qualified to the environmentAL safety Journal of Sex Research.
The present invention compared with prior art has following advantage and beneficial effect:
1, utilization rate of solid waste of the present invention is higher, can reach 40% to the domestic waste incineration residue utilization ratio, and the urban domestic garbage incinerator slag accounts for 20% of institute's burning domestic garbage amount, this not only reduces the raw material resources cost of product greatly, and turn waste into wealth, open up a kind of new recycling technology for the urban domestic garbage incinerator slag, reduced the ecological environmental pollution that domestic waste incineration residue brought.
2, the present invention makes full use of the mechanism that lateral reactivity that domestic waste incineration residue has can be excited by admixture, solved the technical barrier that domestic waste incineration residue causes owing to self inertia in the comprehensive utilization process, for the recycling of domestic waste incineration residue provides a kind of new technological approaches.
3, the domestic waste incineration residue concrete quay brick intensity height of the present invention's preparation meet " coagulation scholar common brick and decorative block " (NY/T671-2003) standard, and safety evaluation is qualified.
4, the technology of the present invention handiness is strong, technology is simple, and cost is low, and operation is easy to control.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is done detailed description further, but embodiment of the present invention is not limited thereto.
Embodiment 1 (technical process as shown in Figure 1)
(1) raw material is handled: at first the slag that Guangzhou Lee is cheated domestic garbage burning electricity generation factory carries out drying, deodorizing and the pre-treatment of (sieve mesh 3mm) removal of impurities of sieving, and carries out ball milling then.Ball milling is a dry ball milling, and the ball milling time is 2～5 minutes, behind the ball milling slag is sieved, and chooses the following slag of 0.3mm, the slag of other greater particle sizes again behind the ball milling screening to obtain the following slag of 0.3mm be raw material.
(2) powder preparation:
Bed material: use twin-shaft mixer earlier the aqueous solution of the sodium sulfate compound admixture of the water glass of 40.0% work waste incineration slag, 16.5% cement, 12.5% rubble, 26.0% coarse sand and 1.0% and 4.0% to be added steel basin together, make compound even by table 1 prescription (mass percent %).Strict control amount of water makes the bed material water ratio be about 11.1% (mass percent) when stirring, generally can be agglomerating to hold, and loosing one's grip, touching to scatter is advisable.
Lining: use twin-shaft mixer that 28.5% cement and 71.5% fine sand are added stirring adding steel basin together, make compound evenly when stirring, want the strict amount of water of controlling, make the lining water ratio be about 11.1% (mass percent).
(3) compression moulding: utilize hydropress to adopt two-sided pressing mode to suppress, fill in bed material earlier, forming pressure is 18MPa; Evenly fill in lining afterwards on the bottom that suppresses, adopt two-sided pressing mode to suppress again, forming pressure is 18MPa.
(4) natural curing: the harbour brick of compacting is placed on the plank that weight capacity is strong, water regain is low, puts into the curing kilns normal temperature and pressure and carry out natural curing.
After measured, it is as shown in table 3 that domestic waste incineration residue prepares the physicals of concrete quay brick sample, and it is as shown in table 4 that heavy metal leaches toxicity.
Embodiment 2
The difference of present embodiment and embodiment 1 is:
(2) powder preparation:
Bed material: use twin-shaft mixer earlier the sodium hydroxide of 34.0% work waste incineration slag, 16.2% cement, 22.8% rubble, 24.0% coarse sand and 1.4% and the aqueous solution of 2.6% calcium chloride compound admixture to be added steel basin together, make compound even by table 1 prescription (mass percent %).Strict control amount of water makes the bed material water ratio be about 10.6% (mass percent) when stirring, generally can be agglomerating to hold, and loosing one's grip, touching to scatter is advisable.
Lining: use twin-shaft mixer that 26.2% cement and 73.8% fine sand are added steel basin together, make compound even, when stirring, want strict control amount of water, make the lining water ratio be about 10.6% (mass percent).
Raw material processing, compression moulding, natural curing are identical with embodiment 1, and after measured, the physicals of prepared concrete quay brick is as shown in table 3.
Embodiment 3
The difference of present embodiment and embodiment 1 is:
(2) powder preparation:
Bed material: use twin-shaft mixer earlier the aqueous solution of the trolamine three compound admixture of the sodium hydroxide of 26.0% work waste incineration slag, 15.0% cement, 30.0% rubble, 26.0% coarse sand and 1.3%, 1.4% water glass and 0.3% to be added steel basin together, make compound even by table 1 prescription (mass percent %).Strict control amount of water makes the bed material water ratio be about 10.1% (mass percent) when stirring, generally can be agglomerating to hold, and loosing one's grip, touching to scatter is advisable.
Lining: use twin-shaft mixer that 23.0% cement and 77.0% fine sand are added steel basin together, make compound even, when stirring, want strict control amount of water, make the lining water ratio be about 10.1% (mass percent).
Raw material processing, compression moulding, natural curing are identical with embodiment 1, and after measured, the physicals of the concrete quay brick that makes is as shown in table 3.
Embodiment 4
The difference of present embodiment and embodiment 1 is:
(2) powder preparation:
Bed material: use twin-shaft mixer earlier the aqueous solution of the sodium sulfate three compound admixture of the sodium hydroxide of 18.0% work waste incineration slag, 13.5% cement, 22.9% rubble, 43.0% coarse sand and 0.4%, 0.4% water glass and 1.7% to be added steel basin together, make compound even by table 1 prescription (mass percent %).Strict control amount of water when stirring, making the bed material water ratio is 9.3% (mass percent), generally can be agglomerating to hold, loosing one's grip, touching to scatter is advisable.
Lining: use twin-shaft mixer that 20.5% cement and 79.5% fine sand are added steel basin together, make compound even, want strict control amount of water when stirring, making the lining water ratio is 9.3% (mass percent).
Powder preparation, compression moulding, natural curing are identical with embodiment 1, and after measured, the physicals of the concrete quay brick that makes is as shown in table 3.
Table 1 sample backing material formula (mass percent %)
Table 2 sample lining prescription (mass percent %)
The physicals of table 3 sample
Table 4 sample heavy metal stripping situation (μ g/L)
As seen from the above table, when the domestic waste incineration residue volume 18.0%～40.0% the time, adjust the ratio of other raw materials, concrete quay brick properties of sample can reach " concrete solid brick and decorative block " (NY/T671-2003) MU15 class requirement, and the heavy metal stripping can reach the requirement of GB3838-2002 surface water v class ambient quality standard.
Above-mentioned embodiment is embodiments of the present invention; all can solve the domestic waste incineration residue solid waste and prepare intensity and heavy metal stripping problem in the concrete quay brick process at comprehensive utilization of resources; but the embodiment of the technology of the present invention is not subjected to the restriction of above-mentioned embodiment; other any do not deviate from change, the modification done under the spirit of the technology of the present invention and the principle, substitutes, combination etc. all should be the substitute mode of equivalence, is included within the protection domain of the technology of the present invention.
Claims (9)
1. prepare the method for concrete quay brick with domestic waste incineration residue, it is characterized in that, comprise the steps:
(1) by percentage to the quality, the bottom raw material mixes by following proportioning, adds water and stirs;
Domestic waste incineration residue 16.1%～40.9%
Cement 12.9%～18.1%
Rubble 12.5%～30.9%
Coarse sand 28.1%～43.9%
Admixture 2.5%～5.9%
Wherein, described admixture mixes with other components in the raw material after being made into the aqueous solution again, and by percentage to the quality, bottom raw material water content is 8%～12%;
(2) by percentage to the quality, the surface layer raw material mixes by following proportioning, adds water and stirs;
Cement 18.9%～30.1%
Fine sand 68.9%～80.1%
Described surface layer raw material water content is 8%～12%;
(3) bottom raw material and surface layer raw material are pressed mass ratio (11～17): (2～3) layering compression moulding promptly makes the concrete quay brick through maintenance again.
2. method according to claim 1 is characterized in that, in the step (1), described domestic waste incineration residue also passes through ball-milling processing, and described ball milling is a dry ball milling, and the ball milling time is 2～5 minutes.
3. method according to claim 2, it is characterized in that, described domestic waste incineration residue also comprises following pre-treatment before ball milling: domestic waste incineration residue is carried out drying and deodorizing, it is crossed the 3mm sieve again, take the following domestic waste incineration residue of 3mm.
4. according to claim 2 or 3 described methods, it is characterized in that described domestic waste incineration residue is also handled through screening through after the ball-milling processing, the domestic waste incineration residue after the described screening is the following slag of granularity 0.3mm.
5. method according to claim 1 is characterized in that, in the step (1), described admixture is one or two or more kinds compound in water glass, sodium sulfate, sodium hydroxide, calcium chloride and the trolamine.
6. method according to claim 1 is characterized in that, in the step (3), described layering compression moulding is to fill in the bottom raw material earlier, suppresses, and evenly fills in the surface layer raw material afterwards on the bottom raw material that suppresses, suppress once more, forming pressure is at 15～22Mpa.
7. method according to claim 6 is characterized in that, described compacting utilizes hydropress to adopt two-sided pressing mode to carry out.
8. method according to claim 1 is characterized in that, in the step (4), described maintenance is natural curing.
9. the concrete quay brick of any method preparation of claim 1～8 is characterized in that this harbour brick is the bilayer structure with bottom and surface layer, and described underlayer thickness is 75～77mm, and surface thickness is 3～5mm.
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| CN103387411A (en) * | 2013-07-18 | 2013-11-13 | 烟台大学 | Method for producing aerated concrete with refuse incinerator slag |
| CN104860584A (en) * | 2015-04-16 | 2015-08-26 | 广东环兴环保节能科技有限公司 | Preparation method of garbage incineration power generation furnace slag concrete |
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| CN105503051A (en) * | 2015-12-16 | 2016-04-20 | 李志权 | Water-permeable brick prepared from slag generated in refuse incineration and preparation method of water-permeable brick |
| CN107963847A (en) * | 2018-01-25 | 2018-04-27 | 广西亿品投资有限公司 | High intensity is laid bricks and its manufacture method |
| CN108328973A (en) * | 2018-02-23 | 2018-07-27 | 广东生活环境环境无害化处理中心有限公司 | It is non-burning brick and preparation method thereof using the clinker of linked medical waste incinerator slag preparation |
| CN108751840A (en) * | 2018-05-25 | 2018-11-06 | 邓立科 | The treatment process of clinker and the concrete prepared using the clinker |
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| CN107963847A (en) * | 2018-01-25 | 2018-04-27 | 广西亿品投资有限公司 | High intensity is laid bricks and its manufacture method |
| CN108328973A (en) * | 2018-02-23 | 2018-07-27 | 广东生活环境环境无害化处理中心有限公司 | It is non-burning brick and preparation method thereof using the clinker of linked medical waste incinerator slag preparation |
| CN108751840A (en) * | 2018-05-25 | 2018-11-06 | 邓立科 | The treatment process of clinker and the concrete prepared using the clinker |
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