CN102311240B - Technology for manufacturing brick by using dried sludge - Google Patents
Technology for manufacturing brick by using dried sludge Download PDFInfo
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- CN102311240B CN102311240B CN2011101285739A CN201110128573A CN102311240B CN 102311240 B CN102311240 B CN 102311240B CN 2011101285739 A CN2011101285739 A CN 2011101285739A CN 201110128573 A CN201110128573 A CN 201110128573A CN 102311240 B CN102311240 B CN 102311240B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a technology for manufacturing brick by using dried sludge. The process comprises the following steps: stirring mixed materials; pulverizing raw materials by jaw breaking and hammer breaking; evenly stirring; screening the pulverized mixed material by a vibrating screen; carrying out upward mixing and rolling lamination on the mixed material screened by the vibrating screen; putting into a brut cellar; conveying the aged raw material into a shaper by a conveyer belt to shape the blank; conveying into a drying kiln for drying by a cutting, stacking and transporting car;then, sintering in a calcining kiln; and obtaining common sintered bricks, porous bricks or hollow bricks after the sintering is finished. According to the technology, sludge instead of clay is addedinto various raw materials. On the aspect of producing sintered bricks with high doping volume by utilizing municipal sludge, the maximum municipal sludge doping amount can reach 50%. The technology has obvious breakthrough on the aspects of sludge decrement and reclamation, and sludge is consumed to realize the purpose of changing waste material into things of value.
Description
Technical field
The invention belongs to the harmless processing of municipal sludge and utilization of resources technology, particularly a kind of technology of utilizing the making brick from sludge of mummification.
Background technology
Municipal sludge refers to the solid waste that produces in city domestic sewage, the Industrial Wastewater Treatment process, is the regular product of municipal sewage plant.This sludge moisture content height, perishable has strong stink, and contains toxic substances such as dioxin, bacterium, parasitic ovum and heavy metal.Therefore, need carry out harmless treatment and recycling to mud, how utilizing the mud after the mummification fully also is an environmental protection problem demanding prompt solution.Normally mud has following purposes after through the drying plant oven dry: with the direct mixed firing utilization of raw coal, boiler coal consumption reduces like this, and economic benefit is improved; Put into production as industrial chemicals; As soil improvement agent, to improve etch resistant properties and the water retention property of soil; As discharging fertilizer at a slow speed, improve crop yield; Deliver to the cement mill, sneak into and produce cement in the grog.
General brickmaking technology is with the interaction of clay through water and fire, is frozen into brick.As follows as the brick making from fly-ash technical process: feeder → wheel is rolled over stirrer → rotary conveyor → brick pressing machine → adobe → maintenance → finished product.Generally speaking, 500 kg feed material, be mixed into 0.5m3 wheel and rolled over 6-8 minute, raw material is delivered in the storage hopper from flowing into feeding machine, and brick pressing machine goes out adobe with the speed of 1800-2000 piece per hour, simultaneously by manually picking up on the flatcar, be transported to storage brick field ground, put in no gap between the adobe, 15 layers of height of embankments, natural curing 10-15 days, namely can be finished product.And for example coal gangue baked brick technology mainly is after the making coal gangue brick raw material that will crush fully mixes, stirring-ageing then-restir-rolling-moulding-Qie sign indicating number-drying and roasting.Wherein first road stirs the 80%-90% that adds water to moulding moisture.According to raw material plasticity characteristics, determine 3-7 days rational ageing cycle; Second road stirs and is added to moulding moisture substantially; The main effect that rolling is handled is mixed grind, shearing action, and purpose is to improve a raw material material grating, improves the material plasticity index, guarantees Forming Quality.
For the making brick from sludge technology a lot of domestic patent applications are arranged also, all be in mud, add such as flyash,, raw materials such as slag, cinder.In a kind of method for producing bricks from silt and sludge (200910025784.2), be that 80～85% mud and mud are deposited in and park the field with water ratio, make its water ratio≤60% stand-by; Mud and the mud of water ratio≤60% are transported to the one-level stirrer by feed tank, stir with flyash, rice chaff or wood chip, cinder and black sand, make water ratio≤30% of compound; Compound is placed on the ageing of ageing field makes its water ratio≤22%; Compound is transported to the secondary stirrer by feed tank, according to humidity, adds water or flyash, obtain the base material of water ratio≤20%; By extruding and cutting unit, it is 17.8～18.8% wet base that the base material is made water ratio; Roasting obtains finished bricks.Also have a kind of domestic sludge and river lakebed mud method for manufacturing bricks by mixing (200910031831.4), comprise the steps: that a. domestic sludge handle to dispose: the liquid sludge of sewage work, the mud cake of making through flocculation dewatering, press filtration; B. lakebed mud in river handle to be disposed: use the mud-water separation technology of river lakebed mud, the slime water of mud containing rate 10～15% in the lake, river is transported in the default mummifying pool, form the precipitation bed mud; The precipitation bed mud reaches 60～70% mud containing rate again after mummification in 3～4 months, become lake, the river mummification bed mud of brickmaking; C. compound preparation: mud cake, slag, lake, river mummification bed mud are prepared by mass ratio, measured the slag water ratio and reach 15～25%, be used for the brickmaking base; During preparation, the amount that adds mud cake in per two parts of slags is 1～3 mass parts, and the amount that adds lake, river mummification bed mud is 5～7 mass parts.A kind of method (01126893.X) of utilizing regenerated papermaking mud to prepare vitrified brick and for example, this method may further comprise the steps: a) with sterilant regenerated papermaking mud is carried out pre-treatment; B) mix 70-85 weight part clay, the pretreated regenerated papermaking mud of 10-25 weight part and 5-10 weight part cinder; C) the gained mixture is extruded into the base bar, cuts into adobe, dry back is carried out sintering with 600-700 ℃ sintering temperature to adobe.
With moisture high mud, directly mix and join in the prior art, perhaps the mud after the mummification by mass percentage 10-15% carry out proportioning, after stirring, go brickmaking, but weak effect can't stir evenly, also limit the add-on of mud, after the test, find that the brick of making can lump (that is, inhomogeneous different with material properties because stirring, surface or inside at brick behind the sintering form patch), influence intensity, crisp easily, the mud of adding does not reach the mass percent of said 10-15%.
Summary of the invention
The object of the present invention is to provide a kind of technology of utilizing the making brick from sludge of mummification.
The technical solution that realizes the object of the invention is: a kind of technology of utilizing the making brick from sludge of mummification, compound is carried out mix,, hammer broken method broken by Hubei Province pulverized raw material respectively, stir, compound after pulverizing sieves with vibratory screening apparatus, will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse, send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain fired common brick, perforated brick or hollow brick behind the kiln discharge;
Wherein compound is (city) mud after the mummification and the mixing raw material of coal gangue; Perhaps compound is the mixing raw material of mud after the mummification and shale, interior fuel; Perhaps compound is mud, the sludge silt after the burning and the mixing raw material of coal gangue after the mummification; Perhaps compound is mud, the sludge silt after the burning and the shale after the mummification, the mixing raw material of interior fuel;
Wherein (city) moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%; (city) sludge silt after the burning with (city) mud after the mummification of mummification chamber by helical feed formula feeding machine be transported to tunnel furnace heat up with on pinkeye in, the mud after the mummification is burned the sludge silt that obtains.
The present invention compared with prior art, its remarkable advantage: (1) adds mud in various raw materials, without clay.Utilize municipal sludge to produce aspect the vitrified brick at high volume, the highest mixing joined municipal sludge and reached 50%.Has tangible breakthrough aspect municipal sludge decrement and the resource utilization.(2) consume mud, turn waste into wealth.Calculate by 6,000 ten thousand brickmaking production lines of existing annual output, the moisture percentage in sewage sludge after the mummification is 10%, and mixing the brickmaking amount is 30%, and then consuming city dewatered sludge amount every year is 3.2 ten thousand tons.(3) mud of pressing water ratio 85% calculates, and can consume 100,000 tons/year of municipal sludges.(4) since the compound of the mud after the mummification, the sludge silt after burning and coal gangue or shale, interior fuel by mechanical mixture, Hubei Province is broken, hammer breaks and sieves method, make the municipal sludge that contains more organic matter be pulverized fully and evenly stirring, and then make made brick after roasting, produce uniform micropore effect.Further make the thermal property of this product be better than the vitrified brick made from traditional raw material, through detecting, the brick intensity height of making, not crisp, micropore is arranged on the brick, the hole is evenly tiny.(5) (city) the sludge silt incorporation after the burning is higher.Because after burning, not only the mud thermal value is utilized, and the mud of mummification is carbonized and becomes the powder art, and fineness is higher, can consume more municipal sludge amount like this under the prerequisite of not damaging the brick quality.(5) because municipal sludge has the thermal value of 2000 left and right sides kilocalories, the present invention fully, rationally, has effectively utilized the thermal value of municipal sludge self.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is the schema of the technology of the present invention's making brick from sludge of utilizing mummification.
Fig. 2 is the hollow brick synoptic diagram that the present invention prepares.
Fig. 3 is the perforated brick synoptic diagram that the present invention prepares.
Embodiment
In conjunction with Fig. 1, the present invention utilizes the technology of the making brick from sludge of mummification, and the mud after the mummification is added in the coal gangue, carries out mix (the various raw materials that just prepare with shovel loader are put together and copied heap repeatedly).Broken (Hubei Province is broken to be the compound that mixes to be sent into jaw crusher carry out fragmentation by Hubei Province, the requirement of discharging particle diameter≤5cm), hammer is broken, and (hammer is broken to be further broken with hammer mill, requirement≤1cm) method is pulverized raw material to the discharging particle diameter, stir, compound after pulverizing with vibratory screening apparatus sieve (sieve is with the raw material after the fragmentation through sieve sift out the material particle diameter require 〉=6 orders), will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse (go up and, roll rolling, the ageing of ageing storehouse requires with common brickmaking technology), send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, blank forming requires extrusion pressure 〉=3.5Mpa, vacuum tightness 〉=98%.Go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain sintered microporous common brick, perforated brick or hollow brick multiple sintering based articles such as (building blocks) behind the kiln discharge; It is under the condition of 1050-1100 degree sintering 1.5-3.0 hour that sintering requires the control top temperature.
Wherein the moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%, and the mud after the mummification and the mass percent of coal gangue are 30-50: 50-70.
In conjunction with Fig. 1, the present invention utilizes the technology of the making brick from sludge of mummification, and the mud after the mummification is added in shale, the interior fuel, carries out mix (the various raw materials that just prepare with shovel loader are put together and copied heap repeatedly).Broken (Hubei Province is broken to be the compound that mixes to be sent into jaw crusher carry out fragmentation by Hubei Province, the requirement of discharging particle diameter≤5cm), hammer is broken, and (hammer is broken to be further broken with hammer mill, requirement≤1cm) method is pulverized raw material to the discharging particle diameter, stir, compound after pulverizing with vibratory screening apparatus sieve (sieve is with the raw material after the fragmentation through sieve sift out the material particle diameter require 〉=6 orders), will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse (go up and, roll rolling, the ageing of ageing storehouse requires with common brickmaking technology), send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, blank forming requires extrusion pressure 〉=3.5Mpa, vacuum tightness 〉=98%.Go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain sintered microporous common brick, perforated brick or hollow brick multiple sintering based articles such as (building blocks) behind the kiln discharge; It is under the condition of 1050-1100 degree sintering 1.5-3.0 hour that sintering requires the control top temperature.
Wherein the moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%, and the mass percent of the mud after the mummification and shale, interior fuel is 30-50: 45-60: 5-10.
In conjunction with Fig. 1, the present invention utilizes the technology of the making brick from sludge of mummification, and the sludge silt with the mud after the mummification, after burning adds in the coal gangue, carries out mix (the various raw materials that just prepare with shovel loader are put together and copied heap repeatedly).Broken (Hubei Province is broken to be the compound that mixes to be sent into jaw crusher carry out fragmentation by Hubei Province, the requirement of discharging particle diameter≤5cm), hammer is broken, and (hammer is broken to be further broken with hammer mill, requirement≤1cm) method is pulverized raw material to the discharging particle diameter, stir, compound after pulverizing with vibratory screening apparatus sieve (sieve is with the raw material after the fragmentation through sieve sift out the material particle diameter require 〉=6 orders), will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse (go up and, roll rolling, the ageing of ageing storehouse requires with common brickmaking technology), send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, blank forming requires extrusion pressure 〉=3.5Mpa, vacuum tightness 〉=98%.Go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain sintered microporous common brick, perforated brick or hollow brick multiple sintering based articles such as (building blocks) behind the kiln discharge; It is under the condition of 1050-1100 degree sintering 1.5-3.0 hour that sintering requires the control top temperature.
Wherein the moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%; Sludge silt after the burning be with the mud after the mummification of mummification chamber by helical feed formula feeding machine be transported to tunnel furnace heat up with on pinkeye in, the mud after the mummification is burned the sludge silt that obtains; Sludge silt after mud after the mummification, the burning and the mass percent of coal gangue are 20-30: 20-30: 50-60.
In conjunction with Fig. 1, the present invention utilizes the technology of the making brick from sludge of mummification, and the sludge silt with the mud after the mummification, after burning adds in shale, the interior fuel, carries out mix (the various raw materials that just prepare with shovel loader are put together and copied heap repeatedly).Broken (Hubei Province is broken to be the compound that mixes to be sent into jaw crusher carry out fragmentation by Hubei Province, the requirement of discharging particle diameter≤5cm), hammer is broken, and (hammer is broken to be further broken with hammer mill, requirement≤1cm) method is pulverized raw material to the discharging particle diameter, stir, compound after pulverizing with vibratory screening apparatus sieve (sieve is with the raw material after the fragmentation through sieve sift out the material particle diameter require 〉=6 orders), will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse (go up and, roll rolling, the ageing of ageing storehouse requires with common brickmaking technology), send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, blank forming requires extrusion pressure 〉=3.5Mpa, vacuum tightness 〉=98%.Go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain sintered microporous common brick, perforated brick or hollow brick multiple sintering based articles such as (building blocks) behind the kiln discharge; It is under the condition of 1050-1100 degree sintering 1.5-3.0 hour that sintering requires the control top temperature.
Wherein the moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%; Sludge silt after the burning be with the mud after the mummification of mummification chamber by helical feed formula feeding machine be transported to tunnel furnace heat up with on pinkeye in, the mud after the mummification is burned the sludge silt that obtains; The mass percent of the sludge silt after the mud after the mummification, the burning and shale, interior fuel is 20-30: 20-30: 45-60: 5-10.
According to above-mentioned requirements, only choose individual data for the embodiment explanation, wherein proportioning raw materials is chosen in above-mentioned scope and can be obtained corresponding goods.
Embodiment 1:
Batching: by the municipal sludge after the mummification: the ratio of coal gangue=30: 70 is carried out mix with raw material and is broken the discharging particle diameter and require≤1cm and passing-screen size 〉=6 orders by the broken discharging particle diameter requirement≤5cm in Hubei Province, hammer).Enter the brickmaking process by common brickmaking operation later on.
Moulding: control extrusion pressure 〉=3.5MPa, vacuum tightness 〉=98%.
Sintering: sintering obtained micropore perforated brick (building block) in 3 hours under the condition of control top temperature 1080 degree, as shown in Figure 2.
The kiln discharge go-on-go deposits the goods yard in, and apparent size is qualified, brick intensity 〉=MU10 building block 〉=MU3.5, and freeze thawing is qualified.The quality of producing satisfies the countries concerned's standard (GB5101-2003, GB13544-2000, GB13545-2003 standard).
Embodiment 2:
Concrete processing step is identical with embodiment 1, and it is as follows not to be both proportioning raw materials: the municipal sludge after the mummification: shale: interior fuel=35: 60: 5.
Sintering control top temperature is under the condition of 1050 degree, sintering 2.5 hours.
Embodiment 3
Concrete processing step is identical with embodiment 1, and it is as follows not to be both proportioning raw materials: the mud after the mummification: the municipal sludge slag after the burning: coal gangue=20: 30: 50
Sintering control top temperature is that sintering obtained the micropore porous building-brick in 1.5 hours, as shown in Figure 3 under the condition of 1100 degree.
Embodiment 4
Concrete processing step is identical with embodiment 1, and it is as follows not to be both proportioning raw materials:
Mud after the mummification: the municipal sludge slag after the burning: shale: interior fuel=22: 30: 43: 5
Sintering control top temperature is under the condition of 1100 degree, sintering 2 hours.
Claims (1)
1. technology of utilizing the making brick from sludge of mummification, it is characterized in that compound is carried out mix,, hammer broken method broken by Hubei Province pulverized raw material respectively, stir, compound after pulverizing sieves with vibratory screening apparatus, will by the compound of vibratory screening apparatus go up and, roll rolling, put into the ageing storehouse, send into shaper by the raw material of conveying belt after with ageing and carry out blank forming, go up a kiln car and send into dry kiln and carry out drying by cutting sign indicating number fortune sign indicating number, send into the roasting kiln sintering again, obtain sintered microporous common brick, perforated brick or hollow brick behind the kiln discharge;
Wherein compound is mud after the mummification and the mixing raw material of coal gangue; Perhaps compound is the mixing raw material of mud after the mummification and shale, interior fuel; Perhaps compound is mud, the sludge silt after the burning and the mixing raw material of coal gangue after the mummification; Perhaps compound is mud, the sludge silt after the burning and the shale after the mummification, the mixing raw material of interior fuel;
Wherein the mass ratio of the mud after the mummification and coal gangue is 30-50: 50-70; Perhaps the mass ratio of the mud after the mummification and shale, interior fuel is 30-50: 45-60: 5-10; Perhaps the sludge silt after the mud after the mummification, the burning and the mass ratio of coal gangue are 20-30: 20-30: 50-60; Perhaps the mass ratio of the sludge silt after the mud after the mummification, the burning and shale, interior fuel is 20-30: 20-30: 45-60: 5-10;
Wherein the moisture percentage in sewage sludge after the mummification is at 10%-25%, loss on ignition 26%-29%; Sludge silt after the burning be with the mud after the mummification of mummification chamber by helical feed formula feeding machine be transported to tunnel furnace heat up with on pinkeye in, the mud after the mummification is burned the sludge silt that obtains;
Wherein, the discharging particle diameter requirement≤5cm after break in Hubei Province; Discharging particle diameter requirement≤1cm after hammer is broken; Material particle diameter after sieving requires 〉=6 orders; Blank forming requires extrusion pressure 〉=3.5MPa, vacuum tightness 〉=98%.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102603266B (en) * | 2012-03-09 | 2013-07-31 | 福建工程学院 | Method for sintering brick from coal gangue |
| CN103396095A (en) * | 2013-07-30 | 2013-11-20 | 江苏宝能建筑材料有限公司 | Lake sludge brick-making technology |
| CN105330332A (en) * | 2015-11-03 | 2016-02-17 | 延边荣达奇新型节能环保建材有限公司 | Preparation method for closed porous inorganic foam material |
| CN107522470A (en) * | 2017-10-11 | 2017-12-29 | 江苏腾业新型材料有限公司 | A kind of method that fired brick is prepared using sludge and cast waste sand |
| CN110186258B (en) * | 2019-05-24 | 2020-10-16 | 山东省疾病预防控制中心 | Drying device for food and medicine |
| CN110423123A (en) * | 2019-07-31 | 2019-11-08 | 洛阳中新能再生能源有限公司 | A kind of comprehensive utilization process of city sludge in sintering brickmaking |
| CN111303957A (en) * | 2020-03-11 | 2020-06-19 | 杨力发 | Biomass fuel based on fly ash and sludge, and preparation method and application thereof |
| 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 |
| CN111995370A (en) * | 2020-09-09 | 2020-11-27 | 杭州国泰环保科技股份有限公司 | Method for making bricks by using sludge |
| CN114516749A (en) * | 2020-11-19 | 2022-05-20 | 江苏唐基建材科技集团有限公司 | Process method for preparing building blocks from solid residue soil of urban engineering |
| CN112459342B (en) * | 2020-11-25 | 2023-08-15 | 平泉天罡建材制造有限公司 | Brick and tile and preparation process thereof |
| CN112979275B (en) * | 2021-02-05 | 2023-04-11 | 中冶成都勘察研究总院有限公司 | Method for preparing adsorption type perforated brick from sludge with high organic matter content |
| CN114105609A (en) * | 2021-12-27 | 2022-03-01 | 山西丰瑞再生资源科技有限公司 | Process for making brick by using coal gangue and municipal sludge |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101058501A (en) * | 2006-07-13 | 2007-10-24 | 广州铬德工程有限公司 | Sludge sintering brick process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101058501A (en) * | 2006-07-13 | 2007-10-24 | 广州铬德工程有限公司 | Sludge sintering brick process |
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