CN107434429A - A kind of method and its equipment that foamed ceramics is prepared using pyrolyzing sludge residue - Google Patents

A kind of method and its equipment that foamed ceramics is prepared using pyrolyzing sludge residue Download PDF

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Publication number
CN107434429A
CN107434429A CN201710738296.0A CN201710738296A CN107434429A CN 107434429 A CN107434429 A CN 107434429A CN 201710738296 A CN201710738296 A CN 201710738296A CN 107434429 A CN107434429 A CN 107434429A
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pyrolyzing sludge
metering devices
foamed ceramics
outlet
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CN107434429B (en
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余广炜
李�杰
汪印
谢胜禹
汪刚
马建立
商晓甫
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Tianjin Huanke Lijia Environmental Modification Technology Co ltd
University of Chinese Academy of Sciences
Institute of Urban Environment of CAS
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Tianjin Huanke Lijia Environmental Modification Technology Co ltd
University of Chinese Academy of Sciences
Institute of Urban Environment of CAS
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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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6565—Cooling rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The present invention relates to a kind of method and apparatus that foamed ceramics is prepared using pyrolyzing sludge residue, methods described is mainly crushed by raw material, is pre-mixed, wet ball grinding, screening, foaming, maintenance shaping, the demoulding, sintering and refrigerating work procedure form.Present invention also offers a kind of equipment for the method that foamed ceramics is prepared using pyrolyzing sludge residue is implemented, its technological process is simple, and automaticity is high, production process cleaning, Product Green environmental protection.The main advantages of the present invention the primary raw material being by the use of pyrolyzing sludge residue as production foamed ceramics, on the one hand the preparation cost of foamed ceramics is greatly reduced, on the other hand, also new approach is provided for the harmless treatment and recycling safe utilization of pyrolyzing sludge product, there is good environmental benefit and economic benefit.

Description

A kind of method and its equipment that foamed ceramics is prepared using pyrolyzing sludge residue
Technical field
The present invention relates to solid waste resource recovery to utilize technical field, is prepared more particularly, to a kind of pyrolyzing sludge residue The method and its equipment of foamed ceramics.
Background technology
With the rapid development of economy, the primary sludge amount of municipal sewage plant's production is significantly increased, it is contemplated that will to the year two thousand twenty Reach 60,000,000 tons.How to realize the recycling of sludge is to study all focus of attention problems both at home and abroad at present.No matter adopt With which kind of technique, minimizing, innoxious and final product recycling are the development trends of Treatment of Sludge.In recent years, sludge hot Solution technology enjoys domestic and international concern as a kind of more advanced sludge disposal technology.The technique can realize sewage sludge harmlessness With minimizing, but the exploratory stage is still in for the recycling of pyrolysis residue.Although there have part research to be all pyrolyzed to be residual Slag is used for improved soil as charcoal, but causes twice accumulation to soil for the heavy metal to containing in pyrolyzing sludge product The worry of pollution, it is set not yet to be applied on a large scale.Therefore, the multipath recycling of pyrolyzing sludge product is sought, It is the key link for promoting New technical use.
Foamed ceramics is that have equally distributed micropore and hole, hole as the porous ceramics of foam-like in a kind of moulding Rate compared with it is high, bulk density is small, bigger than surface, have the distinctive high temperature resistant of ceramic material, corrosion-resistant, chemical stability is good, intensity It is high, regeneration is simple, service life is long and the features such as good filtering adsorptivity, can be in gas liquid filtering, purification separation, change Work catalytic carrier, insulation material, sound absorption damping, extraordinary materials for wall and sensor material etc. are widely used.
Chinese invention patent CN103979998B is related to a kind of hollow foam ceramic wafer and preparation method thereof, raw material composition bag Include:Bentonite, kaolin, clay, carborundum, anthracite, granite building material waste residue, lime stone, gypsum and iron ore, preparation side Method step is as follows：(1) crush each raw material and be mixed to form mixed material；(2) mixed material and water are mixed in mixer With obtained wet feed；(3) above-mentioned wet feed feeding pug mill is kneaded, pug is made；(4) pug is sent into vacuum-extruder It is molded through die orifice, then cuts and wet base substrate is made；(5) dry body body is made in wet body drying；(6) dry body body is sent into and burnt Into in kiln 1140 DEG C~1180 DEG C burn till after, hollow foam ceramic wafer is made.This method using stone material waste residue as primary raw material, it is necessary to Complicated dispensing is carried out, the not foamed processing of raw slurry, pore structure is poor, and does not relate to the use of the resource of pyrolyzing sludge residue Change and utilize.
Chinese invention patent CN104098342B is related to a kind of decorative heat preservation type foamed ceramics and manufacturing technique method, with treasure Pearl rock tailing foam ceramic powder is that base-material forms cold color, using oil shale waste, shale, tufa stone foamed ceramics as granulation material shape Into the decorative heat preservation type foam ceramic material of warm color point-like, the invention product integrates decoration, is incubated, and pattern enriches, cold It is warm clearly demarcated；Product thermal conductivity factor is small, and inanimate matter fire protecting performance is good；Raw material sources are extensive, and formula simplifies, and can largely utilize Industry Waste Slag.Chinese invention patent application CN106146027A discloses a kind of using slag as the foamed ceramics walling of raw material and its preparation side Method, by mixing, ball milling, shaping, burnt till at 1020 DEG C~1250 DEG C it is obtained, prepare foamed ceramics walling hold one's breath porosity it is high, The characteristics such as water absorption rate is low, compression strength is higher, it is a kind of insulation walling of function admirable.Above-mentioned patent application is mainly with viscous Soil, ore and industrial solid castoff slag etc. are raw material, and sintering prepares foamed ceramics, though making full use of solid waste, are become Waste be changed into values, but raw material composition regulation and control are not easy, and preparation cost is higher, and the use range of product is narrower, is primarily adapted for use in insulation material, Cost performance is relatively low, does not also refer to using pyrolyzing sludge residue and is used as raw material.
Research finds city domestic sewage treatment plant sludge or industrial sludge after pyrolysis in resulting residue, mainly by The metal oxidation mineral composition of the elements such as Si, Al, Fe, Ca, Na, Mg, and 5-8% carbon is also remained in pyrolysis residue, it is Prepare the very good material of foamed ceramics.Pyrolyzing sludge residue is directly fired into foamed ceramics, on the one hand giving full play in residue has The effect of component is imitated, without the blending process of complexity, the preparation cost of foamed ceramics is reduced, on the other hand, is burnt by high temperature The solid existing wherein solidification of the harmful element such as heavy metal and stabilisation, are provided newly for the recycling safe utilization of pyrolyzing sludge residue Approach, this is respectively provided with good meaning for sludge thermal treatment field and foamed ceramics field.
Chinese patent application CN101289332A discloses a kind of life that low-temperature ceramic foam material is produced with solid slag Production method, component with 100 parts of binder materials raw material is combined into, aggregate raw material 100-400 parts, activator 13-50 parts, help in mass ratio Agent 0.2-3.0 parts, foaming agent 0.04-1.0 parts, solvent 15-50 parts.Wherein, aggregate is mainly made up of waste residue, including sludge incineration Caused incineration slag etc., dosage is not high and using low-temperature maintenance method, therefore, it is necessary to coordinates the gelling material such as substantial amounts of cement Material, although realizing the recycling of solid slag, production cost is higher；Moreover, this method is molded using low temperature reservation Technique, without high-temperature sintering process, being on the one hand difficult to heavy metal ion that may be present, product in fixing-stable raw material makes The risk that heavy metal ion is oozed out during be present, therefore, the sludge high temperature incineration slag not exceeded to some heavy metals is applicable, But the sludge residue not being suitable for after 400~800 DEG C of pyrolysis；On the other hand, the ceramic foam material that prepared by low temperature reservation is strong Spend low, be only applicable to ornament materials and insulation material, application is small.
The content of the invention
The present invention makes full use of the effective element in pyrolyzing sludge residue, and as the raw material of foamed ceramics, raw material comes Source is simple, and cost is cheap, not only overcome foamed ceramics cost of material it is high the problems such as, but also for pyrolyzing sludge residue money Sourceization utilizes and provides new approach.
To reach above-mentioned purpose, the invention provides a kind of method that foamed ceramics is prepared using pyrolyzing sludge residue, bag Include following steps：(a) pyrolyzing sludge residue is crushed to granularity and is less than 1mm；(b) by upper step crush after pyrolyzing sludge residue with Rheological agent, pore creating material are pre-mixed, and then the material after premixing is delivered in wet ball grinding plus water carries out wet ball grinding, Obtain slurry；(c) slurry after upper step wet ball grinding is crossed into 200 mesh sieves, oversize returns to wet ball grinding and recycled, screenings To be starched for the raw material of foaming, foaming agent then is added in raw material slurry, is foamed；(d) slurry after foaming is poured into In pattern tool, maintenance shaping, sintering embryo material is made after the demoulding；(e) the sintering embryo material for obtaining upper step carries out high temperature sintering, cooling After obtain foamed ceramics product.
Pyrolyzing sludge residue in the step (a) be by sludge from wastewater treatment plant or industrial sludge by anaerobic or Resulting residue is pyrolyzed under anoxia condition, pyrolysis temperature is 400~800 DEG C, and the time is 10~60min；
In the step (b), described rheological agent is bentonite, kaolin or hydroxylated cellulose, and adding proportion is crushing The 2%~15% of pyrolyzing sludge mass of residue afterwards, the mobility and plasticity of raw material slurry can be improved so that foaming more holds Easily；Pore creating material is powdered biomass, carbon dust or carbonate, adding proportion for pyrolyzing sludge mass of residue after crushing 3%~ 9%, ratio is too low, pore-creating DeGrain, influences the quality of foamed ceramics, and adding proportion is too high, not only increases cost, to making Degree unobvious are improved in hole, and easily make the heavy metal in pyrolyzing sludge residue unstable, are polluted from latency environment is caused；Premixing It is 10~30% that material afterwards, which adds water to add water to quality solid-to-liquid ratio when carrying out wet ball grinding, and water adding proportion is low, easily into mud Shape, uniform fine grinding can not be carried out, influences ball milling effect；Water addition is too high, then fine grinding efficiency is low, and power consumption is high.
In the step (c), foaming agent is PEI, polyacrylamide or lauryl sodium sulfate, adding proportion For the 0.5~2% of former pulp quality；Described foam process is, is stirred after adding foaming agent, mixing speed is 200~ 800r/min, mixing time are 5~30min, and agitating mode is mechanical agitation or magnetic agitation, slurry volume increase by 30 after foaming ~200%.
In the step (d), mould is shaped as cylinder, disc, cuboid or square, mould volume 10 ~500cm3, the temperature for conserving shaping is 25~100 DEG C, and maintenance molding time is 8~24h.
In the step (e), sintering temperature control process is 1000~1200 DEG C, and the time of sintering is 20~60min；It is cold But mode is that furnace cooling or air blast cool down, and cooldown rate is<10℃/min.Sintering process to the apparent porosity of foamed ceramics, Resistance to compression and rupture strength influence are the most obvious, and when sintering temperature is less than 1000 DEG C, foamed ceramics sintering is insufficient, substantially with raw material The form accumulation of particle forms, pressure-proof and snap-resistent low intensity, and the heavy metal component in pyrolyzing sludge residue does not obtain well admittedly Change and stabilize, there is Potential environmental risk；When sintering temperature is higher than 1200 DEG C, because of pores collapse, polycondensation causes the porosity quick Reduce, good pore structure, foamed ceramics poor product quality can not be formed, while waste the energy.
The present invention also proposes a kind of equipment for implementing to prepare the method for foamed ceramics using pyrolyzing sludge residue, mainly by dirt Mud pyrolysis residue warehouse, 1# metering devices, reducing mechanism, 1# conveying devices, rheological agent warehouse, 2# metering devices, Pore creating material warehouse, 3# metering devices, mixing arrangement, 4# metering devices, water tank, 5# metering devices, wet method Ball mill, screening machine, 2# conveying devices, foaming agent warehouse, 6# metering devices, foam device, 7# metering devices, into Pattern tool, 3# conveying devices, curing means, 4# conveying devices, sintering equipment and cooling device composition, the connection of specific equipment Mode is：
Pyrolyzing sludge residue warehouse (1) is connected by 1# metering devices (2) with reducing mechanism (3) entrance；Crush Device (3) outlet is connected with 1# conveying devices (4) entrance；1# conveying devices (4) outlet is connected with mixing arrangement (9) entrance；
Rheological agent warehouse (5) outlet is connected by 2# metering devices (6) with mixing arrangement (9) entrance；Pore creating material stores up Storehouse (7) outlet is connected by 3# metering devices (8) with mixing arrangement (9) entrance；
Mixing arrangement (9) outlet is connected by 4# metering devices (10) with ball mill by wet process (13) entrance；Water tank (11) outlet is connected by 5# metering devices (12) with ball mill by wet process (13) entrance；
Ball mill by wet process (13) outlet is connected with screening machine (14) entrance；Screening machine (14) oversize exports to be filled with 2# conveyings (15) are put to be connected；The outlet of screening machine (14) screenings is connected with foam device (19) entrance；
Foaming agent warehouse (16) is connected by 6# metering devices (17) with foam device (18) entrance；
Foam device (18) outlet is connected by 7# metering devices (19) with mould (20) entrance；
Mould (20) is connected through 3# conveying devices (21) with curing means (22) entrance；
Curing means (22) outlet is connected with 4# conveying devices (23) entrance；
4# conveying devices (23) outlet is connected with sintering equipment (24) entrance；Sintering equipment (24) exports and cooling device (25) entrance is connected.
Preferably,
Pyrolyzing sludge residue warehouse (1), rheological agent warehouse (5), pore creating material warehouse (7) and foaming agent warehouse (16) are common Steel structure warehouse；
1# metering devices (2), 2# metering devices (6), 3# metering devices (8), 4# metering devices (10) and 6# metering devices (17) claim for spiral or rotary pocket feeder；
Reducing mechanism (3) is dry ball, Raymond mill, horizontal roller mill, Vertical Mill or airslide disintegrating mill；
1# conveying devices (4) and 2# conveying devices (15) are belt feeder, scrapper conveyor, conveying worm or bucket elevator；
Mixing arrangement (9) is double-shaft mixer, coulter type mixer or spiral ribbon mixer；
Water tank (11) is common steel structure water tank；
5# metering devices (12) are water pump；
Ball mill by wet process (13) is common planetary formula ball mill, tumbling ball mill or oscillatory type ball mill；
Screening machine (14) is conventional wet type screening machine；
Foam device (18) is the stainless steel blending tank equipped with mechanical stirring device or magnetic stirring apparatus；
7# metering devices (19) are slush pump or inclined chute；
Mould (20) is common wooden or carbon steel mould；
3# conveying devices (21) and 4# conveying devices (23) are belt conveyor or chain-linked conveyer；
The common curing box of curing means (22) or fog room；
Sintering equipment (24) is belt roaster or pallet；
Cooling device (25) is straight line cooler.
The beneficial effect that the present invention obtains：(1) foamed ceramics is prepared by raw material of pyrolyzing sludge residue, is on the one hand sludge The recycling of pyrolysis residue provides a new way, on the other hand make full use of Si, Al in pyrolyzing sludge residue, The Hubeiwans such as Fe, Ca, Na, Mg, without complicated blending process, greatly reduce the preparation cost of foamed ceramics；(2) it is fully sharp With foamed ceramics preparation technology high temperature sintering process, the stable curing of heavy metal in pyrolyzing sludge residue is realized, avoids dirt Environmental Risk during mud pyrolysis residue recycling.(3) production equipment system is simple and direct, and yield is big, and cost is low, from Dynamicization degree is high, and generation environment does not pollute, Product Green environmental protection.
Brief description of the drawings
Fig. 1 is the process schematic diagram that a kind of pyrolyzing sludge residue that the embodiment of the present invention 1 provides prepares foamed ceramics；
Fig. 2 is that the equipment connecting relation that a kind of pyrolyzing sludge residue that the embodiment of the present invention 6 provides prepares foamed ceramics shows It is intended to；Wherein, 1. pyrolyzing sludge residue warehouse；2.1# metering device；3. reducing mechanism；4.1# conveying device；5. rheology Agent warehouse；6.2# metering device；7. pore creating material warehouse；8.3# metering device；9. mixing arrangement；10.4# quantitatively give Expect device；11. water tank；12.5# metering devices；13. ball mill by wet process；14. screening machine；15.2# conveying devices；16. Foaming agent warehouse；17.6# metering devices；18. foam device；19.7# metering devices；20. mould；21.3# Conveying device；22. curing means；23.4# conveying devices；24. sintering equipment；25. cooling device.
Embodiment
Technical solution of the present invention is further elaborated with reference to embodiment.Unreceipted particular technique or bar in embodiment Part person, carried out according to the technology described by document in the art or condition or according to product description.Agents useful for same or instrument The unreceipted production firm person of device, being can be by the conventional products of acquisition purchased in market.
Embodiment 1
As shown in figure 1, the pyrolyzing sludge residue that charing 30min is obtained at 600 DEG C is crushed, make granularity<1mm；Weigh 5% Bentonite, 5% powdered biomass mixes with 90% pyrolyzing sludge residue, is carried out after adding water adjustment solid-to-liquid ratio to be 10% wet Method ball milling, the rotating speed of ball milling are 230r/min, Ball-milling Time 6h, and the slurry after ball milling crosses 200 mesh sieves, and oversize sends ball milling back to Machine, screenings are starched for foaming raw material.Then the lauryl sodium sulfate of addition 1% is as foaming agent in raw material slurry, while magnetic force Stirring, the speed of stirring is 500r/min, and it is 100cm that slurry is poured into volume after stirring 10min3Cylinder mold in, support Stable foam-formed material is formed after shield shaping.Then foam-formed material is put into 70 DEG C of curing box conserve 24h, is formed Sinter embryo material；Sintering embryo material is put into high temperature sintering furnace, 1050 DEG C is risen to 5 DEG C/min programming rate, sinters 30min, With<10 DEG C/min rate of temperature fall cools to room temperature with the furnace, obtains pyrolyzing sludge residue foamed ceramics.Its apparent porosity is 58%, compression strength 10MPa, rupture strength 5MPa, meet standard GB/T/T 16533-1996, available for gas, admittedly Two-phase purification between body, liquid is with separating and bacteriological filtration, gas distribution etc..Pyrolyzing sludge residue is determined by TCLP toxicity lixiviation process to steep Leaching of Heavy Metals concentration in foam ceramics, testing result show that Cu, Zn, Cr, Pb, Cd leaching mass concentration are followed successively by 262.53mg·kg-1、271.44mg·kg-1、0.084mg·kg-1、0.24mg·kg-1、0.029mg·kg-1, far below leaching Limit value as defined in going out toxicity discriminating standard GB/T 5085.3-2007, can be used safely.
Embodiment 2
The pyrolyzing sludge residue that charing 30min is obtained at 650 DEG C is crushed, makes granularity<1mm；10% bentonite is weighed, 7% powdered biomass is mixed with 83% pyrolyzing sludge residue, and wet ball grinding, ball milling are carried out after adding water adjustment solid-to-liquid ratio 15% Rotating speed be 230r/min, Ball-milling Time 6h, the slurry after ball milling crosses 200 mesh sieves, and oversize sends ball mill back to, and screenings is Foaming raw material is starched.Then the lauryl sodium sulfate of addition 1% is as foaming agent in raw material slurry, while magnetic agitation, stirring Speed is 400r/min, and it is 50cm that slurry is poured into volume after stirring 10min3Cylinder mold in, maintenance shaping after formed Stable foam-formed material.Then foam-formed material is put into 60 DEG C of curing box conserve 24h, obtains and forms sintering embryo material；Will Sintering embryo material is put into sintering Muffle furnace, is risen to 1050 DEG C with 5 DEG C/min programming rate, is sintered 30min, with<10℃/min Rate of temperature fall cool to room temperature with the furnace, obtain pyrolyzing sludge residue foamed ceramics.Its apparent porosity is 57%, and compression strength is 9MPa, rupture strength 4.6MPa, meet standard GB/T/T 16533-1996, available for two between gas, solid, liquid Mutually purification is with separating and bacteriological filtration, gas distribution etc..A huge sum of money in pyrolyzing sludge residue foamed ceramics is determined by TCLP toxicity lixiviation process Belong to leaching concentration, testing result shows that Cu, Zn, Cr, Pb, Cd leaching mass concentration are followed successively by 242.11mgkg-1、 250.33mg·kg-1、0.077mg·kg-1、0.219mg·kg-1、0.027mg·kg-1, far below leaching characteristic identification country Limit value as defined in standard GB5085.3-2007, it can use safely.
Embodiment 3
The pyrolyzing sludge residue that charing 30min is obtained at 700 DEG C is crushed, makes granularity<1mm；15% kaolin is weighed, 3% powdered biomass is mixed with 82% pyrolyzing sludge residue, and wet ball grinding, ball are carried out after adding water adjustment solid-to-liquid ratio to be 20% The rotating speed of mill is 230r/min, Ball-milling Time 6h, and the slurry after ball milling crosses 200 mesh sieves, and oversize sends ball mill, screenings back to Starched for foaming raw material.Then the lauryl sodium sulfate of addition 1.5% is as foaming agent in raw material slurry, while mechanical agitation is stirred The speed mixed is 400r/min, and it is 50cm that slurry is poured into volume after stirring 10min3Cylinder mold in, maintenance shaping after Form stable foam-formed material.Then foam-formed material is put into 60 DEG C of curing box conserve 24h, obtains and forms sintering embryo Material；Sintering embryo material is put into high temperature sintering furnace, 1050 DEG C is risen to 5 DEG C/min programming rate, sinters 30min, with<10 DEG C/min rate of temperature fall cools to room temperature with the furnace, obtain pyrolyzing sludge residue foamed ceramics.Its apparent porosity is 62%, resistance to compression Intensity is 8.5MPa, rupture strength 4MPa, meets standard GB/T/T 16533-1996, available for gas, solid, liquid Between two-phase purification with separating and bacteriological filtration, gas distribution etc..Pyrolyzing sludge residue foamed ceramics is determined by TCLP toxicity lixiviation process Middle Leaching of Heavy Metals concentration, testing result show that Cu, Zn, Cr, Pb, Cd leaching mass concentration are followed successively by 221.69mgkg-1、 229.22mg·kg-1、0.071mg·kg-1、0.20mg·kg-1、0.024mg·kg-1, far below leaching characteristic identification, country marks Limit value as defined in quasi- GB5085.3-2007, it can use safely.
Embodiment 4
The pyrolyzing sludge residue that charing 60min is obtained at 400 DEG C is crushed, makes granularity<1mm；2% kaolin is weighed, 9% carbonate is mixed with 89% pyrolyzing sludge residue, and wet ball grinding is carried out after adding water adjustment solid-to-liquid ratio to be 25%, ball milling Rotating speed is 230r/min, Ball-milling Time 6h, and the slurry after ball milling crosses 200 mesh sieves, and oversize sends ball mill back to, and screenings is hair Steep raw material slurry.Then the PEI of addition 0.5% is as foaming agent in raw material slurry, while mechanical agitation, the speed of stirring Spend for 500r/min, it is 10cm to stir and slurry is poured into volume after 10min3Cylinder mold in, formed after maintenance shaping steady Fixed foam-formed material.Then foam-formed material is put into 100 DEG C of curing box conserve 12h, obtains and forms sintering embryo material；It will burn Knot embryo material is put into high temperature sintering furnace, is risen to 1000 DEG C with 10 DEG C/min programming rate, is sintered 60min, with<10 DEG C/min's Rate of temperature fall cools to room temperature with the furnace, obtains pyrolyzing sludge residue foamed ceramics.Its apparent porosity is 59%, and compression strength is 10MPa, rupture strength 5MPa, meet standard GB/T/T 16533-1996, available for the two-phase between gas, solid, liquid Purify and separate and bacteriological filtration, gas distribution etc..Heavy metal in pyrolyzing sludge residue foamed ceramics is determined by TCLP toxicity lixiviation process Leaching concentration, testing result show that Cu, Zn, Cr, Pb, Cd leaching mass concentration are followed successively by 260.25mgkg-1、 271.92mg·kg-1、0.082mg·kg-1、0.21mg·kg-1、0.029mg·kg-1, far below leaching characteristic identification, country marks Limit value as defined in quasi- GB5085.3-2007, it can use safely.
Embodiment 5
The pyrolyzing sludge residue that charing 20min is obtained at 700 DEG C is crushed, makes granularity<1mm；Weigh the hydroxyl of gross weight 2% Cellulose, 3% carbon dust are mixed with 95% pyrolyzing sludge residue, and wet ball grinding is carried out after adding water adjustment solid-to-liquid ratio to be 30%, The rotating speed of ball milling is 230r/min, Ball-milling Time 6h, and the slurry after ball milling crosses 200 mesh sieves, and oversize sends ball mill back to, under sieve Thing is starched for foaming raw material.Then the polyacrylamide of addition 2% is used as foaming agent in raw material slurry, while mechanical agitation, stirs Speed be 800r/min, stir after 5min that slurry is poured into volume is 500cm3Cylinder mold in, maintenance shaping after shape Into stable foam-formed material.Then foam-formed material is put into 25 DEG C of curing box conserve 24h, obtains and forms sintering embryo material； Sintering embryo material is put into high temperature sintering furnace, 1200 DEG C is risen to 5 DEG C/min programming rate, sinters 20min, with<10℃/ Min rate of temperature fall cools to room temperature with the furnace, obtains pyrolyzing sludge residue foamed ceramics.Its apparent porosity is 58%, pressure resistance Spend for 10MPa, rupture strength 5MPa, meet standard GB/T/T 16533-1996, available between gas, solid, liquid Two-phase is purified and separated and bacteriological filtration, gas distribution etc..Weight in pyrolyzing sludge residue foamed ceramics is determined by TCLP toxicity lixiviation process Metal leaching concentration, testing result show that Cu, Zn, Cr, Pb, Cd leaching mass concentration are followed successively by 261.62mgkg-1、 272.40mg·kg-1、0.084mg·kg-1、0.23mg·kg-1、0.026mg·kg-1, far below leaching characteristic identification, country marks Limit value as defined in quasi- GB5085.3-2007, it can use safely.
Embodiment 6
A kind of equipment for the method that foamed ceramics is prepared using pyrolyzing sludge residue, as shown in Fig. 2 including：Pyrolyzing sludge Residue warehouse (1), 1# metering devices (2), reducing mechanism (3), 1# conveying devices (4), rheological agent warehouse (5), 2# are quantitative Charging gear (6), pore creating material warehouse (7), 3# metering devices (8), mixing arrangement (9), 4# metering devices (10), storage Water pot (11), 5# metering devices (12), ball mill by wet process (13), screening machine (14), 2# conveying devices (15), foaming agent storage Storehouse (16), 6# metering devices (17), foam device (18), 7# metering devices (19), mould (20), 3# conveyings Device (21), curing means (22), 4# conveying devices (23), sintering equipment (24), cooling device (25)；
Specifically the connected mode of equipment is：
Pyrolyzing sludge residue warehouse (1) is connected by 1# metering devices (2) with reducing mechanism (3) entrance；Crush Device (3) outlet is connected with 1# conveying devices (4) entrance；1# conveying devices (4) outlet is connected with mixing arrangement (9) entrance；
Rheological agent warehouse (5) outlet is connected by 2# metering devices (6) with mixing arrangement (9) entrance；Pore creating material stores up Storehouse (7) outlet is connected by 3# metering devices (8) with mixing arrangement (9) entrance；
Mixing arrangement (9) outlet is connected by 4# metering devices (10) with ball mill by wet process (13) entrance；Water tank (11) outlet is connected by 5# metering devices (12) with ball mill by wet process (13) entrance；
Ball mill by wet process (13) outlet is connected with screening machine (14) entrance；Screening machine (14) oversize exports to be filled with 2# conveyings (15) are put to be connected；The outlet of screening machine (14) screenings is connected with foam device (19) entrance；
Foaming agent warehouse (16) is connected by 6# metering devices (17) with foam device (18) entrance；
Foam device (18) outlet is connected by 7# metering devices (19) with mould (20) entrance；
Mould (20) is connected through 3# conveying devices (21) with curing means (22) entrance；
Curing means (22) outlet is connected with 4# conveying devices (23) entrance；
4# conveying devices (23) outlet is connected with sintering equipment (24) entrance；Sintering equipment (24) exports and cooling device (25) entrance is connected.
Preferably,
Pyrolyzing sludge residue warehouse (1), rheological agent warehouse (5), pore creating material warehouse (7) and foaming agent warehouse (16) are common Steel structure warehouse；
1# metering devices (2), 2# metering devices (6), 3# metering devices (8), 4# metering devices (10) and 6# metering devices (17) claim for spiral or rotary pocket feeder；
Reducing mechanism (3) is dry ball, Raymond mill, horizontal roller mill, Vertical Mill or airslide disintegrating mill；
1# conveying devices (4) and 2# conveying devices (15) are belt feeder, scrapper conveyor, conveying worm or bucket elevator；
Mixing arrangement (9) is double-shaft mixer, coulter type mixer or spiral ribbon mixer；
Water tank (11) is common steel structure water tank；
5# metering devices (12) are water pump；
Ball mill by wet process (13) is common planetary formula ball mill, tumbling ball mill or oscillatory type ball mill；
Screening machine (14) is conventional wet type screening machine；
Foam device (18) is the stainless steel blending tank equipped with mechanical stirring device or magnetic stirring apparatus；
7# metering devices (19) are slush pump or inclined chute；
Mould (20) is common wooden or carbon steel mould；
3# conveying devices (21) and 4# conveying devices (23) are belt conveyor or chain-linked conveyer；
The common curing box of curing means (22) or fog room；
Sintering equipment (24) is belt roaster or pallet；
Cooling device (25) is straight line cooler.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.

Claims (7)

  1. A kind of 1. method that foamed ceramics is prepared using pyrolyzing sludge residue, it is characterised in that：Comprise the following steps：
    (a) pyrolyzing sludge residue is crushed to granularity and is less than 1mm；
    (b) the pyrolyzing sludge residue after upper step is crushed is pre-mixed with rheological agent, pore creating material, then by the thing after premixing Material is delivered in wet ball grinding plus water carries out wet ball grinding, obtains slurry；
    (c) slurry after upper step wet ball grinding is crossed into 200 mesh sieves, oversize returns to wet ball grinding and recycled, and screenings is use Starched in the raw material of foaming, then add foaming agent in raw material slurry, foamed；
    (d) slurry after foaming is poured into mould, maintenance shaping, sintering embryo material is made after the demoulding；
    (e) the sintering embryo material for obtaining upper step carries out high temperature sintering, and foamed ceramics product is obtained after cooling.
  2. A kind of 2. method that foamed ceramics is prepared using pyrolyzing sludge residue according to claim 1, it is characterised in that：Institute It is by under anaerobic or anoxia condition by sludge from wastewater treatment plant or industrial sludge to state the pyrolyzing sludge residue in step (a) Residue obtained by pyrolysis, pyrolysis temperature are 400~800 DEG C, and the time is 10~60min.
  3. A kind of 3. method that foamed ceramics is prepared using pyrolyzing sludge residue according to claim 1, it is characterised in that：Institute State in step (b), described rheological agent is bentonite, kaolin or hydroxylated cellulose, and adding proportion is pyrolyzing sludge after crushing The 2%~15% of mass of residue；Pore creating material is powdered biomass, carbon dust or carbonate, and adding proportion is pyrolyzing sludge after crushing The 3%~9% of mass of residue；Material after premixing add water added water to when carrying out wet ball grinding quality solid-to-liquid ratio for 10~ 30%.
  4. A kind of 4. method that foamed ceramics is prepared using pyrolyzing sludge residue according to claim 1, it is characterised in that：Institute State in step (c), foaming agent is PEI, polyacrylamide or lauryl sodium sulfate, and adding proportion is that raw material starches matter The 0.5~2% of amount；Described foam process is to be stirred after adding foaming agent, mixing speed is 200~800r/min, is stirred It is 5~30min to mix the time, and agitating mode is mechanical agitation or magnetic agitation.
  5. A kind of 5. method that foamed ceramics is prepared using pyrolyzing sludge residue according to claim 1, it is characterised in that：Institute State in step (d), mould is shaped as cylinder, disc, cuboid or square, and mould volume is 10~500cm3, The temperature of maintenance shaping is 25~100 DEG C, and maintenance molding time is 8~24h.
  6. A kind of 6. method that foamed ceramics is prepared using pyrolyzing sludge residue according to claim 1, it is characterised in that：Institute State in step (e), sintering temperature control process is 1000~1200 DEG C, and the time of sintering is 20~60min；The type of cooling be with Stove cools down or air blast cooling, cooldown rate are<10℃/min.
  7. It is 7. a kind of for preparing setting for the method for foamed ceramics any one of claim 1-6 using pyrolyzing sludge residue It is standby, it is characterised in that：The equipment includes：Pyrolyzing sludge residue warehouse (1), 1# metering devices (2), reducing mechanism (3), 1# conveying devices (4), rheological agent warehouse (5), 2# metering devices (6), pore creating material warehouse (7), 3# metering devices (8), mixing arrangement (9), 4# metering devices (10), water tank (11), 5# metering devices (12), ball mill by wet process (13), screening machine (14), 2# conveying devices (15), foaming agent warehouse (16), 6# metering devices (17), foam device (18), 7# metering devices (19), mould (20), 3# conveying devices (21), curing means (22), 4# conveying devices (23), sintering equipment (24), cooling device (25)；
    The connected mode of the equipment is：
    Pyrolyzing sludge residue warehouse (1) is connected by 1# metering devices (2) with reducing mechanism (3) entrance；Reducing mechanism (3) outlet is connected with 1# conveying devices (4) entrance；1# conveying devices (4) outlet is connected with mixing arrangement (9) entrance；
    Rheological agent warehouse (5) outlet is connected by 2# metering devices (6) with mixing arrangement (9) entrance；Pore creating material warehouse (7) Outlet is connected by 3# metering devices (8) with mixing arrangement (9) entrance；
    Mixing arrangement (9) outlet is connected by 4# metering devices (10) with ball mill by wet process (13) entrance；Water tank (11) Outlet is connected by 5# metering devices (12) with ball mill by wet process (13) entrance；
    Ball mill by wet process (13) outlet is connected with screening machine (14) entrance；Screening machine (14) oversize exports and 2# conveying devices (15) it is connected；The outlet of screening machine (14) screenings is connected with foam device (19) entrance；
    Foaming agent warehouse (16) is connected by 6# metering devices (17) with foam device (18) entrance；
    Foam device (18) outlet is connected by 7# metering devices (19) with mould (20) entrance；
    Mould (20) is connected through 3# conveying devices (21) with curing means (22) entrance；
    Curing means (22) outlet is connected with 4# conveying devices (23) entrance；
    4# conveying devices (23) outlet is connected with sintering equipment (24) entrance；Sintering equipment (24) outlet enters with cooling device (25) Mouth is connected.
CN201710738296.0A 2017-08-25 2017-08-25 Method and equipment for preparing foamed ceramic by utilizing sludge pyrolysis residues Active CN107434429B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109970065A (en) * 2019-02-19 2019-07-05 同济大学 A kind of method that the reduction of urban mud anaerobic digestion biogas residue prepares silicon carbide
CN110407556A (en) * 2019-08-05 2019-11-05 淮北市菲美得环保科技有限公司 A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge
CN111499404A (en) * 2020-04-26 2020-08-07 中国科学院城市环境研究所 Method and system for preparing perforated bricks by adopting raw sludge
CN116217207A (en) * 2023-02-27 2023-06-06 清华大学深圳国际研究生院 Ceramic tile and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101318805A (en) * 2008-06-25 2008-12-10 南昌大学 Method for manufacturing and sintering brick permeable to water with urban sewage sludge and wet-discharged coal ash
CN104108946A (en) * 2014-04-25 2014-10-22 武汉理工大学 Garbage incineration fly ash -based foamed ceramic and preparation method thereof
CN105924220A (en) * 2016-04-12 2016-09-07 南京工业大学 Process for preparing filler by doping composite stabilizer into chemical sludge incineration ash
CN106007776A (en) * 2016-05-12 2016-10-12 中国科学院城市环境研究所 Method and device for preparing ceramsite from sludge pyrolytic biochar
CN106116482A (en) * 2016-06-22 2016-11-16 福建工程学院 The method utilizing mineralized waste, mud and building castoff sintering self-insulating brick
CN106673705A (en) * 2017-02-13 2017-05-17 常州大学 Treatment technology for waste incineration fly ash and excess sludge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101318805A (en) * 2008-06-25 2008-12-10 南昌大学 Method for manufacturing and sintering brick permeable to water with urban sewage sludge and wet-discharged coal ash
CN104108946A (en) * 2014-04-25 2014-10-22 武汉理工大学 Garbage incineration fly ash -based foamed ceramic and preparation method thereof
CN105924220A (en) * 2016-04-12 2016-09-07 南京工业大学 Process for preparing filler by doping composite stabilizer into chemical sludge incineration ash
CN106007776A (en) * 2016-05-12 2016-10-12 中国科学院城市环境研究所 Method and device for preparing ceramsite from sludge pyrolytic biochar
CN106116482A (en) * 2016-06-22 2016-11-16 福建工程学院 The method utilizing mineralized waste, mud and building castoff sintering self-insulating brick
CN106673705A (en) * 2017-02-13 2017-05-17 常州大学 Treatment technology for waste incineration fly ash and excess sludge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109970065A (en) * 2019-02-19 2019-07-05 同济大学 A kind of method that the reduction of urban mud anaerobic digestion biogas residue prepares silicon carbide
CN110407556A (en) * 2019-08-05 2019-11-05 淮北市菲美得环保科技有限公司 A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge
CN111499404A (en) * 2020-04-26 2020-08-07 中国科学院城市环境研究所 Method and system for preparing perforated bricks by adopting raw sludge
CN116217207A (en) * 2023-02-27 2023-06-06 清华大学深圳国际研究生院 Ceramic tile and preparation method thereof

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