CN105967752A - Preparation method of sheet materials with low pollution by using city sludge and calcium carbide slags - Google Patents
Preparation method of sheet materials with low pollution by using city sludge and calcium carbide slags Download PDFInfo
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- CN105967752A CN105967752A CN201610301166.6A CN201610301166A CN105967752A CN 105967752 A CN105967752 A CN 105967752A CN 201610301166 A CN201610301166 A CN 201610301166A CN 105967752 A CN105967752 A CN 105967752A
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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
- C04B30/00—Compositions for artificial stone, not containing binders
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/30—Mixed waste; Waste of undefined composition
- C04B18/305—Municipal waste
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention relates to a preparation method of sheet materials with low pollution by using city sludge and calcium carbide slags. Base materials which comprise city sludge with wet basis, coal ash, calcium carbide slags and broken stone slags are metered separately; firstly, heavy metal ions in the city sludge with wet basis are solidified, cracking and carbonization pretreatment is carried out for a part of the city sludge after solidification treatment, and the rest part of the city sludge after solidification treatment and calcium carbide slags are mixed in order to carry out pretreatment by a sintering method; the base materials after the pretreatment are mixed, and a compression molding is carried out for molding; after molding, drying is carried out till the weight is constant; a blank is placed in a microwave sintering apparatus, pumping is carried out in order to form vacuum, CO2 is introduced in order to keep the pressure in the system constant, and after maintenance, the sheet materials are obtained. The method has the beneficial effects that solidification effects of the heavy metal are good, the removal rates of various heavy metals are higher than 90%, and the removal rates are not limited by kinds of heavy metals; the utilization rate of solid wastes is high, and the sheet materials are widely suitable for usage in life and production.
Description
Technical field
The invention belongs to recycling sludge and utilize technical field, utilize municipal sludge and carbide slag to prepare low stain preparation of plates method particularly to one.
Background technology
China be one have a large population and a few land, country that resource is nervous.In China; the continuous propelling built along with the level of urbanization; and from State-level to vast society; more and more stronger to the consciousness of environmental conservation; the quantity of sewage treatment plant set level and sharply increased in recent years, and the sludge quantity (comprising various heavy metal ion etc.) produced therewith is the most increasing.According to statistics, to the year two thousand twenty, China's municipal sludge discharge capacity (dry weight) is up to 60,000,000 tons.The most efficient and rational utilizes these garbages, it is achieved the rationalization of refuse, the utilization of resource, has become as current urgent problem.. and in mud, content of organics is high, and containing various pathogenic bacterium, perishable smelly, if a large amount of undressed mud is arbitrarily stacked and discharges, not only environment can be caused new pollution, but also the useful resources in mud can be wasted.Therefore, how yield is big, the mud of complicated component, makes its minimizing, innoxious, stabilisation and resource after scientific disposal, has become as China or even the hot issue of whole world extensive concern.
Carbide slag quantity is big, and alkalinity is high, contains again the harmful substance such as sulfur, arsenic, and the most treated discharge can block sewer, stops up long-pending riverbed, endangers fish production.Stack then land occupation on land, pollute environment.Some are built in strand or the factory in mountain area, are exhausted directly to by carbide slag in seawall or mountain valley all the time, fill out sea and fill out the regular stacking of ditch, and several exhaling does not makees Anti-seeping technology.This method floor space is big, seriously polluted.According to calculating, often make the pure carbide of 1t, will be about generating 1.16t carbide slag, at present, the utilization to carbide slag mainly has two aspects, and one is for building industry, on the other hand it is for environmental improvement, by these approach merely with part carbide slag, still has a large amount of carbide slag not utilized.A large amount of stackings of carbide slag had both occupied substantial amounts of land resource, polluted again environment, and therefore, it is the most very urgent how carbide slag is turned waste into wealth by present stage.
In recent years, the yield of China's mud and carbide slag quickly increases.Utilizing municipal sludge the most efficiently, this kind of solid waste of carbide slag prepares environment-friendly materials, studies existing document, has had certain report, the most still has some problems, such as:
1. containing substantial amounts of heavy metal ion in municipal sludge, human lives and production can be caused injury greatly by these ions, for current technique, also there is no good solution, and construction material of being made by mud blindly is applied in daily life production, As time goes on, heavy metal ion therein can slowly leach oozes out, and healthy to people works the mischief
2. also substantial amounts of house refuse and the urban pollutant in municipal sludge, containing a large amount of pathogenic bacterias and harmful microorganism, various Organic substances are allowed to form flocculation glue, in present stage industry, burning sludge is main process means, but this not only wastes substantial amounts of resource and fuel, and burns the harmful gas meeting contaminated air of generation, neighbouring crowd is caused serious injury
Currently used municipal sludge prepares the construction material such as grade of sheet material achieved with certain achievement.A such as Chinese patent (patent publication No.: CN104649650A) of Xi'an profit primary sludge process company limited discloses the preparation method of a kind of new city making brick from sludge.It utilizes sludge dehydrating agent and deodorizer to be dehydrated mud and deodorization processes, a kind of degradable mud plastics environment protecting sheet material and preparation method thereof (patent publication No.: CN104591682A) disclosed in the Lv Tian Genie et Environnement of Zhejiang, it utilizes mud and wood powder, PP powder, various additives also carry out secondary demoulding pelletize, injection forming, but the sheet material that this method obtains, durability and heat-insulating property cannot be guaranteed, and the heavy metal ion in mud and Organic substance are the most well processed by this method, simply add additive to be allowed to be fixed up, it is difficult to use for a long time.
Summary of the invention
The technical problem to be solved is for the deficiency existing for above-mentioned prior art, a kind of method utilizing municipal sludge and carbide slag to prepare low stain sheet material is provided, for mud itself containing substantial amounts of heavy metal ion and Organic substance, the pollutant secondary cycle making pollution environment utilizes, it is achieved economic benefit and the dual increment of social benefit.
The present invention solves that the technical scheme that problem set forth above is used is: utilize the method that municipal sludge and carbide slag prepare low stain sheet material, by basic material wet basis municipal sludge, flyash, carbide slag and chip ballast measure respectively, first the heavy metal ion in wet basis municipal sludge is solidified, municipal sludge after a portion cured carries out cracking carbonization pretreatment, municipal sludge after remainder cured and carbide slag carry out mixed-sintering method pretreatment, then pretreated basic material is mixed, use compression moulding method molding again, it is dried after molding to constant weight, then base substrate is put in microwave sintering apparatus, extracting vacuum, it is passed through CO2In making system, pressure is constant, can be prepared by sheet material after maintenance.
By such scheme, the quality group of described basic material becomes: wet basis municipal sludge 40～60%, flyash 10～20%, carbide slag 25～40%, chip ballast 5～10%.
By such scheme, described cured is first in wet basis municipal sludge, adds the phosphoric acid mixed solution that concentration is 2wt.% hydrogen peroxide and concentration is 42wt.%, stirring 1h, standing and reacting 24h, reclaims heavy metal by adsorption column and adsorption tanks, and the sludge slurry after recycling is standby.
By such scheme, described wet basis municipal sludge, its initial moisture >=50wt.%, wherein, the sludge quantity≤20wt.% of cracking carbonization pretreatment, during low temperature pyrolyzer, temperature is at 240～300 DEG C, pressure 10～15Mpa；Sludge quantity >=the 80wt.% of mixed-sintering method pretreatment, content 12%≤θ≤20% of carbide slag, sintering temperature is 900～950 DEG C.
By such scheme, described carbide slag is slurry, water content≤50wt.%.
By such scheme, described chip ballast particle diameter 5mm≤r≤30mm.
By such scheme, described maintenance is to use microwave carbonized maintaining, and curing time is 2h, and curing temperature is 200 ± 5 DEG C, CO2Gas pressure is 0.4Mpa.
The main technical principle of the present invention is: for processing the heavy metal in mud and this two large problems of Organic substance,
In terms of heavy metals immobilization, 1, it is catalyzed and valence state control technology, utilizes the slaine of each heavy metal species in mud and phosphatase reaction generation solubility, then exchange the heavy metal ion in phosphoric acid solution with acid cation exchange resin, to remove the heavy metal in mud, and reclaim phosphoric acid；2, utilize steam press maintenance technology, it is contemplated that in mud remaining heavy metal ion can when blanks and moulding and conserving ion concentration and the situation of spilling, admittedly use microwave curing and carbonized maintaining technology；Microwave curing technology is with the overall heating without thermograde of its uniqueness, make the sheet material slurry can quickly, be dried uniformly, on the other hand, the electromagnetic field that microwave produces makes the crystallization reaction speed of chemical substance and the rule degree of crystal lattice in material be improved greatly, slip is made to get final product depanning at short notice, so can be solidified before overflowing surface by middle residual gravity metal in slurry, stabilizing heavy metal；3, surface densification technology is utilized, after being passed through carbon dioxide in maintenance bin, carbon dioxide can react with slurry mineral, release substantial amounts of heat simultaneously, the reactant formed in the fast reaction phase covers the reaction rate that slowed down on the surface of non-reacted parts, so the compactness that carbonized maintaining makes product surface improves, so can increase the intensity of sheet material, heavy metal volume can be reduced again and overflow；
In terms of mud organic substance process, 1, employing carbide slag and mud are calcined after proportionally mixing, and in calcination process, carbide slag and mud can form substantial amounts of active CaO-SiO in pyroprocess2System, provides intensity for late phase reaction；2, the low-temperature carbonization of mud, main by the carbonization elimination Organic substance impact on timber intensity, simultaneously, the loose structure that mud carbonization is formed, on the one hand can say the heat conductivity reducing material, can have the most again absorption moisture or the ability of harmful gas, obtain functionalization for material and basis is provided.
Having the beneficial effect that obtained by the present invention: heavy metals immobilization is effective, processes agent removal sludge heavy-metal with the phosphoric acid containing hydrogen peroxide respond well, and the clearance of each heavy metal species is more than 90%, and is not limited by heavy metal kind；Utilization rate of solid waste is high, and a large amount of in this technology to use municipal sludges and carbide slag be material of main part, is modified mud processing, and not only make use of two kinds of nuisances, and the sheet material prepared can be suitably used for widely in life production and application；Material property is good, have functional, mud is being cracked in carbonisation, having reached the loose structure not available for other sheet materials, the heat-insulating property and the functionalization which enhance system are used, the chip ballast used, serve as the effect of aggregate, transmit pressure when molding, make base substrate closely knit, reduce the cubic deformation of product later stage and improve frost resistance.
Detailed description of the invention
Further illustrate the invention of the application below in conjunction with example, but embodiment is not construed as the restriction to right of the present invention.
Embodiment 1:
The wet basis municipal sludge that the present invention uses, its initial moisture >=50wt.%, carbide slag is slurry, water content≤50wt.%, described chip ballast particle diameter 5mm≤r≤30mm.
The present invention relates to a kind of utilize municipal sludge and carbide slag prepare sheet material preparation method, count by weight, its raw-material weight percentage ratio is: 40wt.% wet basis municipal sludge, 20wt.% flyash, 30wt.% carbide slag, 10wt.% chip ballast, if the phosphoric acid mixed liquor of the hydrogen peroxide of dry measure 2wt.% concentration and 42wt.% concentration.nullPreparation process is: mixed by the phosphoric acid solution of wet basis municipal sludge and the hydrogen peroxide of 2% concentration and 42% concentration，Agitated reaction 1h、After standing 24h，Heavy metal and phosphoric acid solution is reclaimed through acid cation exchange resin absorption，Take 18wt.% sludge slurry through temperature be 280 DEG C、Pressure is 15Mpa low temperature pyrolyzer carbonization，The sludge slurry of remaining 82wt.% is blended in the tunnel cave of 950 DEG C sintering with accounting for the carbide slag that its mass percent is 20%，After sintering levigate standby through chaser，Then by after each raw material proportionally mix homogeneously use compression moulding method in corresponding mould compressing，Briquetting pressure is 20Mpa，Molding cycle is 17s，It is dried in 100 DEG C of environment after molding，Drying time 24h，Send in steam press maintenance room after being dried，CO it is passed through after vacuum in extracting bin2, set curing temperature as 200 DEG C, power 3kw, temperature rises 90min, is incubated 30min, and obtained sheet material comprcssive strength is at 60Mpa, tensile strength 28Mpa, Leaching Heavy Metals determination experiment performs according to standard GB/T 5086.2-1997 " solid waste Leaching leaching method-horizontal vibration method ", obtains a leaching rate of heavy metals as follows, Zn:4mg/L, Hg:0.002mg/L, Pb:0.17mg/L, Cd:0.03mg/L, Cr (VI): 0.11mg/L；Heat conductivity is 0.14 [W (m K)-1]。
Embodiment 2:
The wet basis municipal sludge that the present invention uses, its initial moisture >=50wt.%, carbide slag is slurry, water content≤50wt.%, described chip ballast particle diameter 5mm≤r≤30mm.
The present invention relates to a kind of utilize municipal sludge and carbide slag prepare sheet material preparation method, count by weight, its raw-material weight percentage ratio is: 50wt.% wet basis municipal sludge, 15wt% flyash, 30wt%. carbide slag, 5wt.% chip ballast, if the hydrogen peroxide of dry measure 2% concentration and the phosphoric acid mixed liquor of 42% concentration.nullPreparation process is: mixed with the hydrogen peroxide of 2wt.% concentration and the phosphoric acid solution of 42wt.% concentration by wet basis municipal sludge，Agitated reaction 1h、After standing 24h，Heavy metal and phosphoric acid solution is reclaimed through acid cation exchange resin absorption，Take 15wt.% sludge slurry through temperature be 270 DEG C、Pressure is 12Mpa low temperature pyrolyzer carbonization，The sludge slurry of remaining 85wt.% is blended in the tunnel cave of 900 DEG C sintering with accounting for the carbide slag that its mass percent is 20%，After sintering levigate standby through chaser，Measure respectively after the pretreatment as requested of various raw materials，Proportionally use compression moulding method compressing in corresponding mould after mix homogeneously，Briquetting pressure is 15Mpa，Molding cycle is 17s，It is dried in 100 DEG C of environment after molding，Drying time 24h，Send in steam press maintenance room after being dried，CO it is passed through after vacuum in extracting bin2, set curing temperature as 200 DEG C, power 3kw, temperature rises 90min, is incubated 30min, and obtained sheet material comprcssive strength is at 58Mpa, tensile strength 34Mpa, Leaching Heavy Metals determination experiment performs according to standard GB/T 5086.2-1997 " solid waste Leaching leaching method-horizontal vibration method ", obtains a leaching rate of heavy metals as follows, Zn::6mg/L, Hg:0.003mg/L, Pb:0.2mg/L, Cd:0.06mg/L, Cr (VI): 0.18mg/L；Heat conductivity is 0.12 [W (m K)-1].
Embodiment 3
The wet basis municipal sludge that the present invention uses, its initial moisture >=50wt.%, carbide slag is slurry, water content≤50wt.%, described chip ballast particle diameter 5mm≤r≤30mm.
The present invention relates to a kind of utilize municipal sludge and carbide slag prepare sheet material preparation method, count by weight, its raw-material weight percentage ratio is: 50wt%. wet basis municipal sludge, 10wt%. flyash, 35wt%. carbide slag, 5wt%. chip ballast, if the hydrogen peroxide of dry measure 2% concentration and the phosphoric acid mixed liquor of 42% concentration.nullPreparation process is: mixed with the hydrogen peroxide of 2wt.% concentration and the phosphoric acid solution of 42wt.% concentration by wet basis municipal sludge，Agitated reaction 1h、After standing 24h，Through reclaiming heavy metal and phosphoric acid solution through acid cation exchange resin absorption，Take 20wt.% sludge slurry through temperature be 300 DEG C、Pressure is 15Mpa low temperature pyrolyzer carbonization，The sludge slurry of remaining 80wt.% is blended in the tunnel cave of 950 DEG C sintering with accounting for the carbide slag that its mass percent is 20%，After sintering levigate standby through chaser，Measure respectively after the pretreatment as requested of various raw materials，Proportionally use compression moulding method compressing in corresponding mould after mix homogeneously，Briquetting pressure is 15Mpa，Molding cycle is 17s，It is dried in 100 DEG C of environment after molding，Drying time 24h，Send in steam press maintenance room after being dried，CO it is passed through after vacuum in extracting bin2, set curing temperature as 200 DEG C, power 3kw, temperature rises 90min, is incubated 30min, and obtained sheet material comprcssive strength is at 50Mpa, tensile strength 31Mpa, Leaching Heavy Metals determination experiment performs according to standard GB/T 5086.2-1997 " solid waste Leaching leaching method-horizontal vibration method ", obtains a leaching rate of heavy metals as follows, Zn::4mg/L, Hg:0.002mg/L, Pb:0.15mg/L, Cd:0.04mg/L, Cr (VI): 0.13mg/L；Heat conductivity is 0.11 [W (m K)-1].
Embodiment 4
The wet basis municipal sludge that the present invention uses, its initial moisture >=50wt.%, carbide slag is slurry, water content≤50wt.%, described chip ballast particle diameter 5mm≤r≤30mm.
The present invention relates to a kind of utilize municipal sludge and carbide slag prepare sheet material preparation method, count by weight, its raw-material weight percentage ratio is: 45wt%. wet basis municipal sludge, 10wt%. flyash, 40wt%. carbide slag, 5wt%. chip ballast, if the hydrogen peroxide of dry measure 2% concentration and the phosphoric acid mixed liquor of 42% concentration.nullPreparation process is: mixed with the hydrogen peroxide of 2wt.% concentration and the phosphoric acid solution of 42wt.% concentration by wet basis municipal sludge，Agitated reaction 1h、After standing 24h，Heavy metal and phosphoric acid solution is reclaimed through acid cation exchange resin absorption，Take 12wt.% sludge slurry through temperature be 240 DEG C、Pressure is 10Mpa low temperature pyrolyzer carbonization，The sludge slurry of remaining 88wt.% is blended in the tunnel cave of 900 DEG C sintering with accounting for the carbide slag that its mass percent is 20%，After sintering levigate standby through chaser,Measure respectively after the pretreatment as requested of various raw materials，Proportionally use compression moulding method compressing in corresponding mould after mix homogeneously，Briquetting pressure is 10Mpa，Molding cycle is 17s，It is dried in 100 DEG C of environment after molding，Drying time 24h，Send in steam press maintenance room after being dried，CO it is passed through after vacuum in extracting bin2, set curing temperature as 200 DEG C, power 3kw, temperature rises 90min, is incubated 30min, and obtained sheet material comprcssive strength is at 56Mpa, tensile strength 30Mpa, Leaching Heavy Metals determination experiment performs according to standard GB/T 5086.2-1997 " solid waste Leaching leaching method-horizontal vibration method ", obtains a leaching rate of heavy metals as follows, Zn::5mg/L, Hg:0.003mg/L, Pb:0.17mg/L, Cd:0.05mg/L, Cr (VI): 0.14mg/L；Heat conductivity is 0.13 [W (m K)-1]。
Claims (7)
1. utilize the method that municipal sludge and carbide slag prepare low stain sheet material, by basic material wet basis municipal sludge, flyash, electricity
Rock ballast and chip ballast measure respectively, first solidify the heavy metal ion in wet basis municipal sludge, and a portion is solid
Municipal sludge after change processes carries out cracking carbonization pretreatment, and the municipal sludge after remainder cured enters with carbide slag
Row mixed-sintering method pretreatment, then mixes pretreated basic material, then uses compression moulding method molding, molding
After be dried to constant weight, then base substrate is put in microwave sintering apparatus, extracting vacuum, be passed through CO2In making system, pressure is permanent
Fixed, can be prepared by sheet material after maintenance.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
The quality group of described basic material becomes: wet basis municipal sludge 40～60%, flyash 10～20%, carbide slag 25～
40%, chip ballast 5～10%.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
Described cured is first in wet basis municipal sludge, adds concentration and is 2wt.% hydrogen peroxide and concentration is 42wt.%'s
Phosphoric acid mixed solution, stirs 1h, standing and reacting 24h, reclaims heavy metal, after recycling by adsorption column and adsorption tanks
Sludge slurry standby.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
Described wet basis municipal sludge, its initial moisture >=50wt.%, wherein, the sludge quantity≤20wt.% of cracking carbonization pretreatment,
During low temperature pyrolyzer, temperature is at 240～300 DEG C, pressure 10～15Mpa；Sludge quantity >=the 80wt.% of mixed-sintering method pretreatment,
Content 12%≤θ≤20% of carbide slag, sintering temperature is 900～950 DEG C.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
Described carbide slag is slurry, water content≤50wt.%.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
Described chip ballast particle diameter 5mm≤r≤30mm.
The most according to claim 1 municipal sludge and carbide slag is utilized to prepare low stain preparation of plates method, it is characterised in that
Described maintenance is to use microwave carbonized maintaining, and curing time is 2h, and curing temperature is 200 ± 5 DEG C, CO2Gas pressure
For 0.4Mpa.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107540322A (en) * | 2017-09-22 | 2018-01-05 | 广州市建筑科学研究院有限公司 | Inorganic artificial stone containing high performance ceramsite and high hydroscopic resin and preparation method thereof |
| CN115611543A (en) * | 2022-10-24 | 2023-01-17 | 河南理工大学 | High-activity coal gasification furnace slag mineral admixture and preparation method and application thereof |
| CN115772013A (en) * | 2023-02-15 | 2023-03-10 | 河北工业大学 | Concrete containing silt powder and solidified carbide slag |
| CN117466664A (en) * | 2023-11-08 | 2024-01-30 | 陕西省建筑科学研究院有限公司 | Preparation method of magnesium slag-based light porous ceramsite for treating heavy metal ions in wastewater |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062598A (en) * | 2001-08-27 | 2003-03-04 | Nippon Kaisui Kako Kk | Method for treating sludgy waste |
| CN101423354A (en) * | 2008-11-14 | 2009-05-06 | 济南大学 | Method for producing architectural materials by using paper making sludge |
| TW201134784A (en) * | 2010-04-13 | 2011-10-16 | Univ Nat Ilan | Cement and method for producing the same |
| CN103570200A (en) * | 2012-08-06 | 2014-02-12 | 吴俊斌 | Sludge liquefying and drying treatment system and method |
| CN103979924A (en) * | 2014-05-20 | 2014-08-13 | 潜山县新型工程建筑材料有限公司 | Process for producing autoclaved brick |
| CN104044204A (en) * | 2014-05-30 | 2014-09-17 | 湖南大学 | Rapid pre-curing method for carbon dioxide curing cement-based materials |
| CN104591682A (en) * | 2014-12-24 | 2015-05-06 | 浙江绿天环境工程有限公司 | Degradable sludge-plastic environment-friendly board and preparation method thereof |
| CN104649650A (en) * | 2015-02-28 | 2015-05-27 | 西安市利生污泥处理有限公司 | Novel sludge brick making technique |
| CN105254166A (en) * | 2015-11-14 | 2016-01-20 | 辽宁工程技术大学 | Dewatered sludge curing agent and preparing method and using method thereof |
| CN105347653A (en) * | 2015-11-14 | 2016-02-24 | 辽宁工程技术大学 | Sludge dehydration conditioning agent and its preparation method and use method |
-
2016
- 2016-05-09 CN CN201610301166.6A patent/CN105967752B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062598A (en) * | 2001-08-27 | 2003-03-04 | Nippon Kaisui Kako Kk | Method for treating sludgy waste |
| CN101423354A (en) * | 2008-11-14 | 2009-05-06 | 济南大学 | Method for producing architectural materials by using paper making sludge |
| TW201134784A (en) * | 2010-04-13 | 2011-10-16 | Univ Nat Ilan | Cement and method for producing the same |
| CN103570200A (en) * | 2012-08-06 | 2014-02-12 | 吴俊斌 | Sludge liquefying and drying treatment system and method |
| CN103979924A (en) * | 2014-05-20 | 2014-08-13 | 潜山县新型工程建筑材料有限公司 | Process for producing autoclaved brick |
| CN104044204A (en) * | 2014-05-30 | 2014-09-17 | 湖南大学 | Rapid pre-curing method for carbon dioxide curing cement-based materials |
| CN104591682A (en) * | 2014-12-24 | 2015-05-06 | 浙江绿天环境工程有限公司 | Degradable sludge-plastic environment-friendly board and preparation method thereof |
| CN104649650A (en) * | 2015-02-28 | 2015-05-27 | 西安市利生污泥处理有限公司 | Novel sludge brick making technique |
| CN105254166A (en) * | 2015-11-14 | 2016-01-20 | 辽宁工程技术大学 | Dewatered sludge curing agent and preparing method and using method thereof |
| CN105347653A (en) * | 2015-11-14 | 2016-02-24 | 辽宁工程技术大学 | Sludge dehydration conditioning agent and its preparation method and use method |
Non-Patent Citations (3)
| Title |
|---|
| 周少奇: "《固体废物污染控制原理与技术》", 30 March 2009, 清华大学出版社 * |
| 施晓霖等: "污泥资源化处理新工艺Novosol技术及其应用", 《电网与清洁能源》 * |
| 郭生伟: "阳离子树脂对污酸中重金属离子的吸附行为研究", 《中国环境科学学会学术年会论文集》 * |
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|---|---|---|---|---|
| CN107540322A (en) * | 2017-09-22 | 2018-01-05 | 广州市建筑科学研究院有限公司 | Inorganic artificial stone containing high performance ceramsite and high hydroscopic resin and preparation method thereof |
| CN107540322B (en) * | 2017-09-22 | 2020-02-07 | 广州市建筑科学研究院有限公司 | Inorganic artificial stone containing high-performance ceramsite and super absorbent resin and preparation method thereof |
| CN115611543A (en) * | 2022-10-24 | 2023-01-17 | 河南理工大学 | High-activity coal gasification furnace slag mineral admixture and preparation method and application thereof |
| CN115611543B (en) * | 2022-10-24 | 2023-06-13 | 河南理工大学 | High-activity coal gasification slag mineral admixture and preparation method and application thereof |
| CN115772013A (en) * | 2023-02-15 | 2023-03-10 | 河北工业大学 | Concrete containing silt powder and solidified carbide slag |
| CN117466664A (en) * | 2023-11-08 | 2024-01-30 | 陕西省建筑科学研究院有限公司 | Preparation method of magnesium slag-based light porous ceramsite for treating heavy metal ions in wastewater |
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