CN102092992B - 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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- CN102092992B CN102092992B CN2010105392330A CN201010539233A CN102092992B CN 102092992 B CN102092992 B CN 102092992B CN 2010105392330 A CN2010105392330 A CN 2010105392330A CN 201010539233 A CN201010539233 A CN 201010539233A CN 102092992 B CN102092992 B CN 102092992B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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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
- 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
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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 material, 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 China's most city household garbage.Because the city can use the landfill place fewer and feweri more and more high with the landfill cost, oneself applies the burning city domestic garbage power plant 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 of burning city domestic garbage power plant; 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 do not handle, like acid rain, dissolution rate is very fast and stripping quantity is bigger under acid condition for above-mentioned heavy metal, tends to exceed the standard that China's heavy metal leaches toxicity GB5085.3-1996, and ecological environment is worked the mischief.Along with the quickening of burning city domestic garbage power plant 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 of urban domestic garbage incinerator slag and efficiently utilizes approach, and oneself becomes the hot issue of urban development and environmental protection concern.
At present the recycling approach of urban domestic garbage incinerator slag mainly contains in the world: the 1. alternative aggregate on petroleum bitumen road surface; 2. cement or concrete alternative aggregate; 3. landfill yard cladding 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 (like road, parking lot etc.) and marine building engineering (like artificial submerged reef, shore protection etc.).Cause cost to raise because dregs of incinerator will pass through preliminary treatment, quality descends, and 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 technology that 200410066443.7 Chinese patent discloses a kind of life garbage incinerator slag aggregate; The outstanding finger of this method is production technology of gathering materials for building with this slag through Regeneration Treatment; Comprise the steps: charging, magnetic separation de-iron, screening, selection by winnowing, fragmentation, clear up, eddy current separation etc.; Manufacturing process is complicated, and 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 works deck.This method is separated ferrous metal with 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 screenings of 19mm particle diameter; At last screenings is paved and be made into town road base course or household refuse landfill sites covered structure layer, carry 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 physical property 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 limestone, harmful constituent (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
The object of the invention is exactly the deficiency that exists in the above-mentioned prior art in order to solve; Provide a kind of environmental protection, convenience, practical urban domestic garbage incinerator slag to prepare the technology of concrete quay brick; Be as the mineral additive with the urban domestic garbage incinerator slag;, the aqueous solution of ball milling screening back and cement, rubble, river sand and Admixture processes after stirring; 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 floor block " (NY/T671-2003) normal intensity grade MU15 technical requirements.Urban domestic garbage incinerator slag utilization rate 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 safety of environment Journal of Sex Research.
The object of the invention is realized through following technical scheme:
With concrete quay brick of domestic waste incineration residue preparation and preparation method thereof, comprise the steps:
(1) preparation of bottom raw material:
By percentage to the quality, the bottom solid material mixes by following proportioning,
Wherein, said Admixture be made into behind the aqueous solution again with raw material in other components mix; Add water then and stir, by percentage to the quality, control bottom raw material water content is 8%～12%;
(2) preparation of surface layer raw material:
By percentage to the quality, the surface layer solid material mixes by following proportioning,
Cement 20.5%～28.5%
Fine sand 71.5%～79.5%
Add water then and stir, said surface layer raw material water content is controlled to be 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.
Said domestic waste incineration residue also passes through ball-milling treatment, and said ball milling is a dry ball milling, and the ball milling time is 2～5 minutes.
Said domestic waste incineration residue mainly is the unburnt flammable organic matter of non-flammable inorganic matter and part; Derive from glass in the rubbish, finishing foreign material, bottle, pottery, fragment of brick, slag etc., also contain organic matters such as certain plastics, metallics and imperfect combustion stationery, fiber, wood.In the preparation; According to actual conditions; 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 preliminary 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 through 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 slag below the 3mm.Some raw material need pass through above-mentioned whole flow process, and some then possibly only need 1～2 road flow process, carries out ball milling, screening then, and various raw material store warehouse-in respectively, require metering according to prescription.Said domestic waste incineration residue is also handled through screening through after the ball-milling treatment, and the domestic waste incineration residue after the said ball milling screening is the slag below the granularity 0.3mm.
Said Admixture is a kind of in silicate of soda, sodium sulphate, NaOH, calcium chloride and the triethanolamine or compound more than two kinds, and this Admixture mainly is to be used to improve concrete intensity.
Said layering compression moulding is to fill in the bottom raw material earlier, suppresses, and on the bottom raw material that suppresses, evenly fills in the surface layer raw material afterwards, suppresses once more, and briquetting pressure is at 15～22Mpa.
Said compacting utilizes hydraulic press to adopt two-sided pressing mode to carry out.
Said maintenance is natural curing.
The concrete quay brick of method for preparing is the double-decker with bottom and surface layer, and said 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 abrasion 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 National standard of said cement " portland cement, Portland cement " (GB175-1999), " portland slag cement, Portland pozzolana cement and Portland fly ash cement " (GB1344-1999), " Composite portland cement " requirement (GB12958-1999).
(GB/T14685-2001) requirement of standard II class of the quality National standard of said rubble " cobble for building, rubble "; (GB/T5483-1996) requirement of standard II class of quality National standard " building sand " of said coarse sand and fine sand.
Principle of the present invention: utilize Admixture to regulate the acid-base value of domestic waste incineration residue; Corrode its surface; Strengthen the adhesive power between the material; Excite the activity of domestic waste incineration residue, and jointly micro-harmful heavy metal is solidified, make the requirement that can be up to state standards of the concrete quay brick of production with the hydrated product of cement; The heavy metal leaching amount of concrete quay brick can not exceeded standard, and qualified to the safety of environment 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 rate; And the urban domestic garbage incinerator slag accounts for 20% of institute's burning domestic garbage amount, and this not only reduces the raw material resources cost of product greatly, and turns 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 of the present invention's preparation is high, meet " concrete solid brick and decorative floor block " (NY/T671-2003) standard, and safety evaluatio is qualified.
4, the flexibility of the present invention's technology is strong, technology is simple, and cost is low, and operation is easy to control.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific 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 (technological process is as shown in Figure 1)
(1) raw material is handled: the slag of at first Guangzhou Lee being cheated domestic garbage burning electricity generation factory carries out drying, deodorizing and the preliminary 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 to add agitation tank together, make compound even by the aqueous solution of the compound Admixture of first silicate of soda and 4.0% the sodium sulphate with 40.0% domestic waste incineration residue, 16.5% cement, 12.5% rubble, 26.0% coarse sand and 1.0% of table 1 prescription (mass percent %).Strict control amount of water makes the bed material moisture content 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 agitation tank together, make compound evenly when stirring, want the strict amount of water of controlling, make the lining moisture content be about 11.1% (mass percent).
(3) compression moulding: utilize hydraulic press to adopt two-sided pressing mode to suppress, fill in bed material earlier, briquetting pressure is 18MPa; On the bottom that suppresses, evenly fill in lining afterwards, adopt two-sided pressing mode to suppress again, briquetting pressure is 18MPa.
(4) natural curing: the harbour brick of compacting is placed on the plank that weight capacity is strong, water absorption is low, puts into the curing kilns normal temperature and pressure and carry out natural curing.
Through measuring, it is as shown in table 3 that domestic waste incineration residue prepares the physical property 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 to add agitation tank together, make compound even by the aqueous solution of earlier that the NaOH of 34.0% work waste incineration slag, 16.2% cement, 22.8% rubble, 24.0% coarse sand and 1.4% and 2.6% calcium chloride is the compound Admixture of table 1 prescription (mass percent %).Strict control amount of water makes the bed material moisture content 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 agitation tank together, make compound even, when stirring, want strict control amount of water, make the lining moisture content be about 10.6% (mass percent).
Raw material processing, compression moulding, natural curing are identical with embodiment 1, and through measuring, the physical property 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 to add agitation tank together, make compound even by the aqueous solution of earlier that the triethanolamine three of the NaOH of 26.0% work waste incineration slag, 15.0% cement, 30.0% rubble, 26.0% coarse sand and 1.3%, 1.4% silicate of soda and 0.3% is the compound Admixture of table 1 prescription (mass percent %).Strict control amount of water makes the bed material moisture content 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 agitation tank together, make compound even, when stirring, want strict control amount of water, make the lining moisture content be about 10.1% (mass percent).
Raw material processing, compression moulding, natural curing are identical with embodiment 1, and through measuring, the physical property 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 to add agitation tank together, make compound even by the aqueous solution of earlier that the sodium sulphate three of the NaOH of 18.0% work waste incineration slag, 13.5% cement, 22.9% rubble, 43.0% coarse sand and 0.4%, 0.4% silicate of soda and 1.7% is the compound Admixture of table 1 prescription (mass percent %).Strict control amount of water when stirring, making the bed material moisture content 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 agitation tank together, make compound even, when stirring, want strict control amount of water, making the lining moisture content is 9.3% (mass percent).
Powder preparation, compression moulding, natural curing are identical with embodiment 1, and through measuring, the physical property 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 physical property of table 3 sample
Table 4 sample heavy metal stripping situation (μ g/L)
Visible by last 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 floor block " (NY/T671-2003) MU15 class requirement, and the heavy metal stripping can reach the requirement of GB3838-2002 surface water v class environmental quality standards.
Above-mentioned embodiment is an embodiment 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 present invention's technology does not receive the restriction of above-mentioned embodiment; Change, the modification of being done under the spirit of other any the present invention of not deviating from technology and the principle, substitute, substitute mode that combination etc. all should be equivalence, be included within the technological protection domain 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) preparation of bottom raw material:
By percentage to the quality, the bottom solid material mixes by following proportioning,
Wherein, said Admixture be made into behind the aqueous solution again with raw material in other components mix; Add water then and stir, by percentage to the quality, control bottom raw material water content is 8%～12%;
(2) preparation of surface layer raw material:
By percentage to the quality, the surface layer solid material mixes by following proportioning,
Cement 20.5%～28.5%
Fine sand 71.5%～79.5%
Add water then and stir, said surface layer raw material water content is controlled to be 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), said domestic waste incineration residue also passes through ball-milling treatment, and said 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; Said domestic waste incineration residue also comprises following preliminary treatment before ball milling: domestic waste incineration residue is carried out drying and deodorizing, again it is crossed the 3mm sieve, take the domestic waste incineration residue below the 3mm.
4. according to claim 2 or 3 described methods, it is characterized in that said domestic waste incineration residue is also handled through screening through after the ball-milling treatment, the domestic waste incineration residue after the said screening is the slag below the granularity 0.3mm.
5. method according to claim 1 is characterized in that, in the step (1), said Admixture is a kind of in silicate of soda, sodium sulphate, NaOH, calcium chloride and the triethanolamine or compound more than two kinds.
6. method according to claim 1 is characterized in that, in the step (3); Said layering compression moulding is to fill in the bottom raw material earlier, suppresses, and on the bottom raw material that suppresses, evenly fills in the surface layer raw material afterwards; Suppress once more, briquetting pressure is at 15～22Mpa.
7. method according to claim 6 is characterized in that, said compacting utilizes hydraulic press to adopt two-sided pressing mode to carry out.
8. method according to claim 1 is characterized in that, in the step (3), said 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 double-decker with bottom and surface layer, and said underlayer thickness is 75～77mm, and surface thickness is 3～5mm.
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| CN103387411B (en) * | 2013-07-18 | 2014-11-26 | 烟台大学 | Method for producing aerated concrete with refuse incinerator slag |
| CN104860584B (en) * | 2015-04-16 | 2017-01-25 | 广东环兴环保节能科技有限公司 | Preparation method of garbage incineration power generation furnace slag concrete |
| CN105347749A (en) * | 2015-11-02 | 2016-02-24 | 苏州恒美新型建材有限公司 | Water-permeable pavement brick with waste incinerator residues as aggregates |
| CN105503051B (en) * | 2015-12-16 | 2017-12-08 | 李志权 | Water-permeable brick made using the clinker of waste incineration and preparation method thereof |
| 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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