CN110078472A - A method of environmentally friendly clinker brick with central is prepared using mixing sludge and dregs - Google Patents
A method of environmentally friendly clinker brick with central is prepared using mixing sludge and dregs Download PDFInfo
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- CN110078472A CN110078472A CN201910414669.8A CN201910414669A CN110078472A CN 110078472 A CN110078472 A CN 110078472A CN 201910414669 A CN201910414669 A CN 201910414669A CN 110078472 A CN110078472 A CN 110078472A
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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
- 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
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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
- 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
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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
- 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
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
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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
- 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
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
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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
- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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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
- 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
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- 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
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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
- 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)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Treatment Of Sludge (AREA)
Abstract
A method of utilize mixing sludge and dregs to prepare environmentally friendly clinker brick with central, comprising the following steps: choose printing and dyeing sludge 2-7 parts, 5-9 parts of municipal sludge, 10-15 parts of clinker, it is slag 25-40 parts ceramic polished, 40-60 parts of creek sludge.Adjusting processing is modified to printing and dyeing sludge and municipal sludge first, pH value is controlled between 7.5-8.5, then extrusion dehydration processing is carried out, make the water content of printing and dyeing sludge and municipal sludge in 45-50%, the water content of creek sludge is in 25-30%, then biological dewatered processing is carried out to printing and dyeing sludge and municipal sludge, C/Hratio is adjusted between 25-35:1, and fermenting agent is added, so that the water content of printing and dyeing sludge and municipal sludge is in 25-30%, finally all raw material is mixed, second level roller pair breaking, after ageing, the preparation of adobe is carried out again, it is sintered being sent in tunnel oven after brick bat drying, obtain finished product.The present invention using waste as raw material, not only can achieve sludge and dregs minimizing and innoxious remarkable result, but also can be by above-mentioned a variety of changing rejected material to useful resource comprehensive utilizations.
Description
Technical field
It is specifically a kind of mixed using a variety of different sludge and dregs the invention belongs to the preparation technical field of fired brick
Close the method for preparing environmentally friendly clinker brick with central.
Background technique
In recent years, larger to the needs of environment friendly brick as economic development and urban construction process need, especially extensively
" prohibiting real enable " that eastern provincial people's government promulgates in New Dwelling engineering, it is specified that completely forbid using clay solid brick, and to look for novelty
The engineering built, extend and reconstructed will use the design standard of composite construction energy-saving.Encouragement Development of Novel environmental protection is also promulgated
Brick is forbidden to use a series of tax reductions of clay solid brick, tax-free preferential policy, creates good political affairs for production environment friendly brick
Plan condition and development space.
According to related data from investigation, the market demand of fired brick is very big.With the implementation of " prohibiting real enable ", clay is real
Heart brick will be eliminated, and the die is cast, is inevitable trend with environment friendly brick.
Municipal sludge derives from the product of city domestic sewage treatment plant purification process, and the content of organic matter is higher, generally
50% or more of contents on dry basis is accounted for, while also containing nutriments such as a large amount of nitrogen phosphorus；Also contain an a certain proportion of huge sum of money in sludge
Belong to ion and chemical substance, especially contain a certain amount of harmful chemical, as adsorbable organic halogen, anion synthesis are washed
Wash agent, Polychlorinated biphenyls etc. and a large amount of pathogenic microorganism.
Printing and dyeing sludge high organic content is easy to degenerate smelly, moisture content height.In addition printing and dyeing sludge due to containing dyestuff,
Slurry, auxiliary agent etc., ingredient is extremely complex, and wherein the structure of dyestuff has nitro and the weight such as amino-compound and copper, chromium, zinc, arsenic
Metallic element has biggish bio-toxicity, larger to the pollution of environment.
The major way of Treatment of Sludge includes: based on landfill, burning and comprehensive utilization at present.Land-fill method is primarily due to
The processing cost of percolate is high, it is contemplated that can be forbidden by country after the year two thousand twenty.Burning mode is harmful because generating exhaust gas and flying dust etc.
Object is also to administer problem.First two mode is compared in the comprehensive utilization of sludge, and processing cost is cheap, realizes that Feasibility of environmental protection is high,
Apparent reduction can be reached.
In addition, using anaerobic fermentation mode substantially for the biochemical treatment of sludge at present.Anaerobic fermentation needs to establish larger
Methane-generating pit, cost of investment is higher, and the bad control of fermentation condition, biogas slurry treatment is also problem, and treated sludge is still
With certain stink.
Summary of the invention
In order to solve the above technical problems, it is hollow using mixing sludge and dregs preparation environmental protection that the present invention provides a kind of
The method of fired brick.
In order to solve the above-mentioned technical problem, the present invention takes following technical scheme:
A method of environmentally friendly clinker brick with central is prepared using mixing sludge and dregs, comprising the following steps:
Raw material are chosen, including 2-7 parts of printing and dyeing sludge in parts by weight, 5-9 parts of municipal sludge, 10-15 parts of clinker, pottery
Porcelain polishes slag 25-40 parts, 40-60 parts of creek sludge；
It is modified to adjust, modification first is adjusted to printing and dyeing sludge, municipal sludge, be added into printing and dyeing sludge and municipal sludge water or
Pressing filtering liquid controls total solid amount and is less than or equal to 20%, then stirs evenly, add the sodium hydroxide solution that concentration is 30%, adjust
PH value carries out printing and dyeing sludge and municipal sludge Air Exposure 2-3 days between 7.5-8.5；
Dehydration squeezes filtering to the printing and dyeing sludge after creek sludge and modified adjusting, municipal administration pollution respectively using filter press and takes off
Water makes the water content of creek sludge in 25-30%, and the water content of printing and dyeing sludge and municipal sludge is in 45-50%；
It is biological dewatered, the printing and dyeing sludge being modified after adjusting and municipal sludge are respectively placed in aerobic fermentation slot, it is dirty to adjust printing and dyeing
The carbon-nitrogen ratio of mud and municipal sludge pollutes between 25-35:1, according to the ratio that weight ratio is 10000:1 to printing and dyeing pollution and municipal administration
Fermenting agent is added, the microorganism in printing and dyeing sludge and municipal sludge carries out aerobic fermentation and releases biological energy source, keeps printing and dyeing dirty
Mud and the temperature of municipal administration pollution increase, and after temperature is increased to 60 DEG C, carry out turning over throwing, until containing for printing and dyeing sludge and municipal sludge
Water is in 25-30%；
It is broken, printing and dyeing sludge, municipal sludge, creek sludge are mixed in proportion with clinker, ceramic polished slag, then carry out second level pair
Roller is crushed mixed processing；
Ageing, mixed material after crushing enter ageing library and are aged 6-7 days；
Brickmaking, the material after ageing enter twin shaft vacuum hard plastic extruder brickmaking, through slitting, pinch-off, obtain adobe；
It is dry, adobe is transported in dry kiln, drying temperature is controlled at 80-90 DEG C, and the moisture content of adobe is less than after drying
5%；
Sintering is fired dried adobe, continuous firing 20-30 hours in tunnel oven with 1000-1100 DEG C, through cooling,
Obtain environmentally friendly clinker brick with central.
It is described to adjust C/Hratio by the way that sawdust is added in printing and dyeing sludge and municipal sludge in biological dewatered step,
The ratio for being 400-600:1 according to the weight proportion of printing and dyeing sludge or municipal sludge and sawdust.
It is described it is biological dewatered during, need to continuously ferment 6-15 days, and every 22-26 hours to printing and dyeing sludge and city
Political affairs sludge turning and throwing once.
In the sintering process, first the preheating section preheating by adobe in tunnel oven, preheating temperature are 500-600 DEG C, so
Adobe enters firing zone from preheating section afterwards, and 1000-1100 DEG C of firing zone temperature then enters back into tunnel oven cooling zone, cooling zone
200-300 DEG C of temperature, the flue gas that cooling section generates enters dry kiln and carries out UTILIZATION OF VESIDUAL HEAT IN, and adobe is dried using the waste heat
Processing.
The exhaust gas generated in the sintering process, after cyclone dust removal, bag-type dust and lye wet desulphurization, denitration process
It is discharged by exhaust tube.
In the raw material, the water content of printing and dyeing sludge is 70%-80%, and the water content of municipal sludge is 70%-80%, creek
The water content of sludge is 40%-50%, ceramic polished slag 0-5%, clinker 0-5%.
In the modified adjustment process, printing and dyeing sludge and municipal sludge is placed in closed biochemistry pool and is carried out, it is past close
It is passed through oxygen in the biochemistry pool closed, Air Exposure is carried out to printing and dyeing sludge and municipal sludge, the exhaust gas of generation is sent back in biochemistry pool again
The tail gas of consumption, formation is discharged by exhaust tube.
Printing and dyeing sludge, municipal sludge and creek sludge in the raw material are transported in transport using hermetically sealed sludge
Defeated special-purpose vehicle is delivered to sludge storage pool and keeps in, and sludge storage pool prevents sludge odor from leaking using hermetically sealed form.
When the brickmaking base, the squeeze pressure used is 20-30 Mpa.
The clinker is one or both of flyash and cinder.
Compared with prior art, the invention has the benefit that
Expand sludge utilizes category, solves the problems, such as the pollution processing and minimizing of 3 kinds of sludge, also achieves more
The comprehensive utilization of resources of kind sludge and clinker, ceramic polished slag.
Sludge biochemical treatment of the invention uses aerobic fermentation method, avoids the processing problem of biogas slurry, small investment, ferment item
Part (pH value, carbon-nitrogen ratio) is easily controllable, and treating capacity is big, and dehydration efficiency is high.
The problem of present invention uses aerobic fermentation technology, not only acts as sludge deodorization, also solve bacterium inside sludge,
The harm such as virus and worm's ovum.
The exhaust gas that sludge pre-treatment, fermentation and adobe sintering process of the present invention generate solves processed all by processing
The exhaust pollution problems that journey generates.
The waste heat of sintering process of the present invention can be used as the drying heat source of adobe, play the role of energy saving.
The organic matter that sludge of the present invention is rich in can save the use of the diesel fuel in adobe sintering procedure as combustible
Amount.
The raw material of clinker used in the present invention or flyash and making cement can form class during the sintering process
It is similar to the coagulator of cement, the intensity of brick can be improved.
The present invention uses creek sludge, has certain quartz sand composition, in high-temperature sintering process, forms glassy state,
The leakage problems of the harmful substances such as heavy metal can be lockked.
Detailed description of the invention
Attached drawing 1 is flow diagram of the present invention.
Specific embodiment
To further understand the features of the present invention, technological means and specific purposes achieved, function, below with reference to
Present invention is further described in detail with specific embodiment for attached drawing.
Embodiment one
As shown in Fig. 1, a method of preparing environmentally friendly clinker brick with central using mixing sludge and dregs, comprising the following steps:
S1 chooses raw material, and including 2 parts of printing and dyeing sludge in parts by weight, 5 parts of municipal sludge, 10 parts of clinker, ceramics are thrown
25 parts of light slag, 40 parts of creek sludge.When transport, is transported using hermetically sealed sludge Transport Appropriation Rolling Stock into sludge storage pool, used
Totally enclosed form storage, avoids stink from leakage.
S2, it is modified to adjust, printing and dyeing sludge and municipal sludge are individually positioned in corresponding closed biochemistry pool, it is dirty to printing and dyeing
Water or pressing filtering liquid are added in mud and municipal sludge, controlling total solid amount is 20%, is then stirred evenly, and the hydrogen that concentration is 30% is added
Sodium hydroxide solution adjusts pH value 7.5, carries out logical oxygen aeration to printing and dyeing sludge and municipal sludge, generate violent aerobic effect
It maintains 3 days.In aerobic mechanism, the exhaust gas of generation is by exhaust fan, and into consuming in biochemical filter tank, tail gas passes through row
Inflator discharge.Biochemistry pool keeps leakproofness, and corresponding fermentation plant also keeps closure.Fermentation plant air intake vent is logical with air blower
Enter oxygen, sludge is being fermented and turning over a large amount of steam and foul smell of the generation of throwing process by exhaust outlet exhaust fan, into crossing biochemistry pool
Consumption, is then discharged by high chimney, effectively avoids the exhaust leak of fermentation process, avoid direct outlet.
S3, dehydration respectively squeeze the printing and dyeing sludge after creek sludge and modified adjusting, municipal administration pollution using filter press
Filtering means dehydration makes the water content of creek sludge 30%, and the water content of printing and dyeing sludge and municipal sludge is 50%.
S4, it is biological dewatered, the printing and dyeing sludge being modified after adjusting and municipal sludge are respectively placed in aerobic fermentation slot, passed through
Sawdust is added in printing and dyeing sludge and municipal sludge to adjust C/Hratio, according to the weight of printing and dyeing sludge or municipal sludge and sawdust
Proportion is the ratio of 400:1, adjusts the carbon-nitrogen ratio of printing and dyeing sludge and municipal sludge between 25:1, is 10000:1 according to weight ratio
Ratio to printing and dyeing pollution and municipal administration pollution be added fermenting agent, then by sludge grow up 100 meters, it is wide: 2 meters, high 1.5 meters
Pile, the microorganism in printing and dyeing sludge and municipal sludge carry out aerobic fermentation and release biological energy source, make printing and dyeing sludge and municipal administration
The temperature of pollution increases, and after temperature is increased to 60 DEG C, starts to use turner turning, turn pile frequency is every 24 hours, continuously
After fermentation 7 days, until the water content of printing and dyeing sludge and municipal sludge is 30%.
Under oxygen supply condition of divulging information, the microorganism in sludge carries out aerobic fermentation, meets the same of own growth breeding demand
When and release a large amount of biological energy sources, this portion of energy can be such that sludge temperature significantly increases, and generally can reach 55 DEG C, can reach
70 DEG C or more.Meanwhile microbial activities can also be such that the irreducible water in sludge activates, reduce its fetter energy state, make it easier to by
Heating evaporation.Therefore, by adding fermenting agent, the microorganism facilitated in sludge carries out aerobic effect.
S5 is crushed, printing and dyeing sludge, municipal sludge, creek sludge is mixed in proportion with clinker, ceramic polished slag, to this
Mixed material carries out the processing of second level roller pair breaking.
S6, ageing, mixed material after crushing enter ageing library and are aged 6 days.
S7, brickmaking, the material after ageing enter twin shaft vacuum hard plastic extruder brickmaking, and through slitting, pinch-off, squeeze pressure is
20 Mpa, obtain adobe.
S8, it is dry, adobe is transported in dry kiln, drying temperature is controlled at 80 DEG C, the moisture content of adobe after drying
5%。
S9, sintering, first the preheating section preheating by adobe in tunnel oven, preheating temperature are 500 DEG C, and then adobe is from preheating
Section enters firing zone, 1000 DEG C of firing zone temperature, continuous firing 30 hours, then enters back into tunnel oven cooling zone, cooling zone temperature
250 DEG C of degree obtains finished product after cooling.The flue gas that cooling section generates enters dry kiln and carries out UTILIZATION OF VESIDUAL HEAT IN, utilizes the waste heat pair
Adobe carries out the drying process of step S8, and the energy is saved in heat recovery.
The brick sintering process is uninterrupted production in 24 hours, and initial heat is burnt by ordinary diesel oil to be supplied, and is reached to adobe
After spontaneous combustion institute calorific requirement, stop diesel combustion heat supply.Diesel heating position is located at tunnel oven medium position, and firing temperature is controlled always
System is at 1000 DEG C.Resulting fired brick product appearance flawless, no unfilled corner, no impression.
In addition, the exhaust gas generated in the sintering process, through cyclone dust removal, bag-type dust and lye wet desulphurization, denitration
It is discharged after processing by exhaust tube.
Embodiment two
A method of environmentally friendly clinker brick with central is prepared using mixing sludge and dregs, comprising the following steps:
S1 chooses raw material, and including 5 parts of printing and dyeing sludge in parts by weight, 7 parts of municipal sludge, 12 parts of clinker, ceramics are thrown
35 parts of light slag, 50 parts of creek sludge.When transport, is transported using hermetically sealed sludge Transport Appropriation Rolling Stock into sludge storage pool, used
Totally enclosed form storage, avoids stink from leakage.
S2, it is modified to adjust, printing and dyeing sludge and municipal sludge are individually positioned in corresponding closed biochemistry pool, it is dirty to printing and dyeing
Water or pressing filtering liquid are added in mud and municipal sludge, controlling total solid amount is 15%, is then stirred evenly, and the hydrogen that concentration is 30% is added
Sodium hydroxide solution adjusts pH value 8.0, carries out logical oxygen aeration to printing and dyeing sludge and municipal sludge, generate violent aerobic effect
It maintains 2 days.In aerobic mechanism, the exhaust gas of generation is by exhaust fan, and into consuming in biochemical filter tank, tail gas passes through row
Inflator discharge.
S3, dehydration respectively squeeze the printing and dyeing sludge after creek sludge and modified adjusting, municipal administration pollution using filter press
Filtering means dehydration makes the water content of creek sludge 25%, and the water content of printing and dyeing sludge and municipal sludge is 45%.
S4, it is biological dewatered, the printing and dyeing sludge being modified after adjusting and municipal sludge are respectively placed in aerobic fermentation slot, passed through
Sawdust is added in printing and dyeing sludge and municipal sludge to adjust C/Hratio, according to the weight of printing and dyeing sludge or municipal sludge and sawdust
Proportion is the ratio of 500:1, adjusts the carbon-nitrogen ratio of printing and dyeing sludge and municipal sludge between 30:1, is 10000:1 according to weight ratio
Ratio to printing and dyeing pollution and municipal administration pollution be added fermenting agent, then by sludge grow up 100 meters, it is wide: 2 meters, high 1.5 meters
Pile, the microorganism in printing and dyeing sludge and municipal sludge carry out aerobic fermentation and release biological energy source, make printing and dyeing sludge and municipal administration
The temperature of pollution increases, and after temperature is increased to 60 DEG C, starts to use turner turning, turn pile frequency is every 24 hours, continuously
After fermentation 7 days, until the water content of printing and dyeing sludge and municipal sludge is 25%.
Under oxygen supply condition of divulging information, the microorganism in sludge carries out aerobic fermentation, meets the same of own growth breeding demand
When and release a large amount of biological energy sources, this portion of energy can be such that sludge temperature significantly increases, and generally can reach 55 DEG C, can reach
70 DEG C or more.Meanwhile microbial activities can also be such that the irreducible water in sludge activates, reduce its fetter energy state, make it easier to by
Heating evaporation.Therefore, by adding fermenting agent, the microorganism facilitated in sludge carries out aerobic effect.
S5 is crushed, printing and dyeing sludge, municipal sludge, creek sludge is mixed in proportion with clinker, ceramic polished slag, to this
Mixed material carries out the processing of second level roller pair breaking.
S6, ageing, mixed material after crushing enter ageing library and are aged 6 days.
S7, brickmaking, the material after ageing enter twin shaft vacuum hard plastic extruder brickmaking, and through slitting, pinch-off, squeeze pressure is
20 Mpa, obtain adobe.
S8, it is dry, adobe is transported in dry kiln, drying temperature is controlled at 80 DEG C, the moisture content of adobe after drying
5%；
S9, sintering, first by adobe in tunnel oven preheating section preheating, preheating temperature be 550 DEG C, then adobe from preheating section into
Enter firing zone, 1050 DEG C of firing zone temperature, continuous firing 28 hours, then enters back into tunnel oven cooling zone, cooling zone temperature 250
DEG C, finished product is obtained after cooling.Cooling section generate flue gas enter dry kiln carry out UTILIZATION OF VESIDUAL HEAT IN, using the flue gas to adobe into
The energy is saved in the drying process of row step S8, heat recovery.
Embodiment three
A method of environmentally friendly clinker brick with central is prepared using mixing sludge and dregs, comprising the following steps:
S1 chooses raw material, and including 7 parts of printing and dyeing sludge in parts by weight, 9 parts of municipal sludge, 15 parts of clinker, ceramics are thrown
40 parts of light slag, 60 parts of creek sludge.When transport, is transported using hermetically sealed sludge Transport Appropriation Rolling Stock into sludge storage pool, used
Totally enclosed form storage, avoids stink from leakage.
S2, it is modified to adjust, printing and dyeing sludge and municipal sludge are individually positioned in corresponding closed biochemistry pool, Xiang Yinran
Water or pressing filtering liquid are added in sludge and municipal sludge, controlling total solid amount is 10%, is then stirred evenly, and adding concentration is 30%
Sodium hydroxide solution adjusts pH value 8.5, carries out logical oxygen aeration to printing and dyeing sludge and municipal sludge, generate violent aerobic work
With maintenance 3 days.In aerobic mechanism, the exhaust gas of generation is by exhaust fan, and into consuming in biochemical filter tank, tail gas passes through
Exhaust tube discharge.
S3, dehydration respectively squeeze the printing and dyeing sludge after creek sludge and modified adjusting, municipal administration pollution using filter press
Filtering means dehydration makes the water content of creek sludge 28%, and the water content of printing and dyeing sludge and municipal sludge is 47%.
S4, it is biological dewatered, the printing and dyeing sludge being modified after adjusting and municipal sludge are respectively placed in aerobic fermentation slot, passed through
Sawdust is added in printing and dyeing sludge and municipal sludge to adjust C/Hratio, according to the weight of printing and dyeing sludge or municipal sludge and sawdust
Proportion is the ratio of 600:1, adjusts the carbon-nitrogen ratio of printing and dyeing sludge and municipal sludge between 35:1, is 10000:1 according to weight ratio
Ratio to printing and dyeing pollution and municipal administration pollution be added fermenting agent, then by sludge grow up 100 meters, it is 2 meters wide, high 1.5 meters
Pile, the microorganism in printing and dyeing sludge and municipal sludge carry out aerobic fermentation and release biological energy source, make printing and dyeing sludge and municipal administration
The temperature of pollution increases, and after temperature is increased to 60 DEG C, starts to use turner turning, turn pile frequency is every 22 hours, continuously
After fermentation 7 days, until the water content of printing and dyeing sludge and municipal sludge is 27%.
Under oxygen supply condition of divulging information, the microorganism in sludge carries out aerobic fermentation using fermenting agent, meets own growth
While breeding demand and a large amount of biological energy sources are released, this portion of energy can be such that sludge temperature significantly increases, generally can reach 55
DEG C, it can reach 70 DEG C or more.Meanwhile microbial activities can also be such that the irreducible water in sludge activates, and reduce it and fetter energy state,
It makes it easier to be heated evaporation.Therefore, by adding fermenting agent, the microorganism facilitated in sludge carries out aerobic effect.
S5 is crushed, printing and dyeing sludge, municipal sludge, creek sludge is mixed in proportion with clinker, ceramic polished slag, to this
Mixed material carries out the processing of second level roller pair breaking.
S6, ageing, mixed material after crushing enter ageing library and are aged 7 days.
S7, brickmaking, the material after ageing enter twin shaft vacuum hard plastic extruder brickmaking, and through slitting, pinch-off, squeeze pressure is
20 Mpa, obtain adobe.
S8, it is dry, adobe is transported in dry kiln, drying temperature is controlled at 90 DEG C, the moisture content of adobe after drying
5%；
S9, sintering, first by adobe in tunnel oven preheating section preheating, preheating temperature be 550 DEG C, then adobe from preheating section into
Enter firing zone, 1100 DEG C of firing zone temperature, continuous refining 28 hours, then enters back into tunnel oven cooling zone, cooling zone temperature 250
DEG C, finished product is obtained after cooling.Cooling section generate flue gas enter dry kiln carry out UTILIZATION OF VESIDUAL HEAT IN, using the flue gas to adobe into
The energy is saved in the drying process of row step S8, heat recovery.
It should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although ginseng
According to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned reality
Technical solution documented by example is applied to modify or equivalent replacement of some of the technical features, but it is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (10)
1. a kind of method for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, comprising the following steps:
Raw material are chosen, including 2-7 parts of printing and dyeing sludge in parts by weight, 5-9 parts of municipal sludge, 10-15 parts of clinker, pottery
Porcelain polishes slag 25-40 parts, 40-60 parts of creek sludge；
It is modified to adjust, modification first is adjusted to printing and dyeing sludge, municipal sludge, be added into printing and dyeing sludge and municipal sludge water or
Pressing filtering liquid controls total solid amount and is less than or equal to 20%, then stirs evenly, add the sodium hydroxide solution that concentration is 30%, adjust
PH value carries out printing and dyeing sludge and municipal sludge Air Exposure 2-3 days between 7.5-8.5；
Dehydration squeezes filtering to the printing and dyeing sludge after creek sludge and modified adjusting, municipal administration pollution respectively using filter press and takes off
Water makes the water content of creek sludge in 25-30%, and the water content of printing and dyeing sludge and municipal sludge is in 45-50%；
It is biological dewatered, the printing and dyeing sludge being modified after adjusting and municipal sludge are respectively placed in aerobic fermentation slot, it is dirty to adjust printing and dyeing
The carbon-nitrogen ratio of mud and municipal sludge pollutes between 25-35:1, according to the ratio that weight ratio is 10000:1 to printing and dyeing pollution and municipal administration
Fermenting agent is added, the microorganism in printing and dyeing sludge and municipal sludge carries out aerobic fermentation and releases biological energy source, keeps printing and dyeing dirty
Mud and the temperature of municipal administration pollution increase, and after mud heap temperature is increased to 60 DEG C, carry out turning over throwing, until printing and dyeing sludge and municipal sludge
Water content in 25-30%；
It is broken, printing and dyeing sludge, municipal sludge, creek sludge are mixed in proportion with clinker, ceramic polished slag, then carry out second level pair
Roller is crushed mixed processing；
Ageing, mixed material after crushing enter ageing library and are aged 6-7 days；
Brickmaking, the material after ageing enter twin shaft vacuum hard plastic extruder brickmaking, through slitting, pinch-off, obtain adobe；
It is dry, adobe is sent in dry kiln, drying temperature is controlled at 80-90 DEG C, and the moisture content of adobe is less than 5% after drying；
Sintering is fired dried adobe, continuous firing 20-30 hours in tunnel oven with 1000-1100 DEG C, through cooling,
Obtain environmentally friendly clinker brick with central.
2. the method according to claim 1 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In, it is described in biological dewatered step, C/Hratio is adjusted by the way that sawdust is added in printing and dyeing sludge and municipal sludge, according to print
The weight proportion for staining mud or municipal sludge and sawdust is the ratio of 400-600:1.
3. the method according to claim 2 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In, it is described it is biological dewatered during, need to continuously ferment 6-15 days, and dirty to printing and dyeing sludge and municipal administration every 22-26 hours
Mud turning and throwing once.
4. the method according to claim 3 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In in the sintering process, first the preheating section preheating by adobe in tunnel oven, preheating temperature are 500-600 DEG C, then adobe
Enter firing zone from preheating section, 1000-1100 DEG C of firing zone temperature then enters back into tunnel oven cooling zone, cooling zone temperature
200-300 DEG C, the flue gas that cooling section generates enters dry kiln and carries out UTILIZATION OF VESIDUAL HEAT IN, and place is dried to adobe using the waste heat
Reason.
5. the method according to claim 4 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In the exhaust gas generated in the sintering process passes through after cyclone dust removal, bag-type dust and lye wet desulphurization, denitration process
Exhaust tube discharge.
6. the method according to claim 5 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In in the raw material, the water content of printing and dyeing sludge is 70%-80%, and the water content of municipal sludge is 70%-80%, creek sludge
Water content be 40%-50%, ceramic polished slag 0-5%, clinker 0-5%.
7. the method according to claim 6 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In, in the modified adjustment process, printing and dyeing sludge and municipal sludge is placed in closed biochemistry pool and is carried out, past closed life
To change and is passed through oxygen in pond to printing and dyeing sludge and municipal sludge progress Air Exposure, the exhaust gas of generation is sent back in biochemistry pool again to be consumed,
The tail gas of formation is discharged by exhaust tube.
8. the method according to claim 7 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In printing and dyeing sludge, municipal sludge and creek sludge in the raw material are dedicated using hermetically sealed sludge transport in transport
Vehicle is delivered to sludge storage pool and keeps in, and sludge storage pool prevents sludge odor from leaking using hermetically sealed form.
9. the method according to claim 8 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
When, the brickmaking base, the squeeze pressure used is 20-30 Mpa.
10. the method according to claim 9 for preparing environmentally friendly clinker brick with central using mixing sludge and dregs, feature exist
In the clinker is one or both of flyash and cinder.
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| CN113340100A (en) * | 2021-07-06 | 2021-09-03 | 曹国强 | System and method for cooperatively treating municipal sludge/oil sludge by using baked brick tunnel kiln |
| CN114180909A (en) * | 2021-12-10 | 2022-03-15 | 深圳市文浩环保再生有限公司 | Regenerated environment-friendly water purifying brick and preparation method thereof |
| CN115179413A (en) * | 2022-09-09 | 2022-10-14 | 山东省聚祥固废应用研究院 | System for making bricks by using municipal sludge and production method |
| CN115301714A (en) * | 2022-08-11 | 2022-11-08 | 徐州振丰新型墙体材料有限公司 | Method for making brick by harmless sintering of polluted soil |
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| CN115301714A (en) * | 2022-08-11 | 2022-11-08 | 徐州振丰新型墙体材料有限公司 | Method for making brick by harmless sintering of polluted soil |
| CN115301714B (en) * | 2022-08-11 | 2023-12-01 | 徐州振丰新型墙体材料有限公司 | Method for making bricks by harmless sintering of polluted soil |
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