CN110903044A - System and method for cooperatively treating construction waste by using cement kiln - Google Patents
System and method for cooperatively treating construction waste by using cement kiln Download PDFInfo
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- CN110903044A CN110903044A CN201811079782.7A CN201811079782A CN110903044A CN 110903044 A CN110903044 A CN 110903044A CN 201811079782 A CN201811079782 A CN 201811079782A CN 110903044 A CN110903044 A CN 110903044A
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- 239000002699 waste material Substances 0.000 title claims abstract description 77
- 238000010276 construction Methods 0.000 title claims abstract description 67
- 239000004568 cement Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000012216 screening Methods 0.000 claims abstract description 26
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 3
- 239000002023 wood Substances 0.000 claims abstract description 3
- 239000010813 municipal solid waste Substances 0.000 claims description 10
- 239000006148 magnetic separator Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 239000011499 joint compound Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 27
- 230000008569 process Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 4
- 239000000123 paper Substances 0.000 abstract description 3
- 239000011087 paperboard Substances 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/246—Cements from oil shales, residues or waste other than slag from waste building materials, e.g. waste asbestos-cement products, demolition waste
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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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a cement kiln co-processing construction waste system and a method. The cement kiln cooperative system is mainly characterized in that aggregate generated after the construction waste is regenerated is used as a cement raw material and is sent into a raw material mill, and screened residue soil is used as the cement raw material. The construction waste treatment system mainly comprises a storage system, a screening system, an iron removal system, a crushing system and the like. The invention combines the construction waste treatment process and the cement production line, adopts the process flows of screening, classification, manual sorting, secondary crushing, iron removal, dust removal and the like to treat the construction waste, sorts out combustible materials (plastics, wood, paper, paperboard and the like) to be sent to a waste incinerator, and takes the treated aggregate as a cement raw material to be fed into a raw material mill.
Description
Technical Field
The invention relates to the field of building material treatment, in particular to a system and a method for cooperatively treating building waste by using a cement kiln.
Background
China generates a large amount of construction waste every year, the construction waste accounts for more than 60% of the total amount of the waste, and most of the construction waste is treated in an open-air stacking or landfill mode without any treatment, so that a large amount of land is consumed. The place where the building rubbish is buried can not be re-ploughed permanently, which causes serious waste of land resources. Meanwhile, the problems of scattering, dust, sand and the like in the processes of clearing and stacking cause serious environmental pollution. The disposal of the construction waste has various modes, such as mountain-piling and landscape-building, direct piling, pit-filling and land-building, resource utilization and the like. Compared with other municipal wastes, the construction wastes have the characteristics of large quantity, no toxicity, no harm and high resource utilization rate. Most of the construction waste can be reused as renewable resources.
Chinese patent CN201610389512.0 discloses cement produced by using construction waste as a mixed material and a production method thereof. The technology selects construction waste such as waste clay bricks near a cement plant, completes the manufacture of cement after primary crushing, heat treatment, mixing, blanking and grinding by a jaw crusher, has simple process, and achieves the significance of reducing, recycling and saving natural resources of the construction waste. However, the technology has high requirements on raw materials of the construction waste, poor universality of the raw materials, general system treatment effect and poor applicability of the finished product of the construction waste.
Disclosure of Invention
The invention aims to provide a system and a method for cooperatively treating construction waste by using a cement kiln. The system comprises a cement kiln cooperative treatment system and a construction waste treatment system. The cement kiln cooperative system is mainly characterized in that aggregate generated after the construction waste is regenerated is used as a cement raw material and is sent into a raw material mill, and screened residue soil is used as the cement raw material. The construction waste treatment system mainly comprises storage, screening, iron removal, crushing and the like. The invention combines the construction waste treatment process and the cement production line, adopts the process flows of screening, classification, manual sorting, secondary crushing, iron removal, dust removal and the like to treat the construction waste, the sorted combustible fuel (plastic, wood, paper, paperboard and the like) is sent to a waste incinerator, and the treated aggregate is used as a cement raw material to be fed into a raw material mill. The invention is characterized by being suitable for the national conditions of China, low energy consumption, high yield, science and reasonability.
The technical scheme adopted by the system of the invention is as follows:
a cement kiln co-processing construction waste system and a method thereof comprise a cement kiln co-processing system and a construction waste processing system, and are characterized in that the cement kiln co-processing system mainly takes the recycled aggregate of the construction waste as a cement raw material, and the construction waste processing system mainly comprises a storage system, a screening system, an iron removal system, a crushing system and the like; the storage system is a closed storage yard and is connected with the screening system through a loader and a plate feeder with a hopper; the screening system comprises a manual sorting system, a vibration grid screen and a bouncing screen screening system; the bouncing screen can separate light, heavy and organic matters; the iron removal system separates metal objects by an electromagnetic iron removal process of a magnetic separator; the crushing system comprises a jaw crusher and an impact crusher, the jaw crusher is used for primary crushing, and the impact crusher is used for secondary crushing.
Furthermore, the construction waste stacking area is a closed storage yard, and the volume of the construction waste stacking area can be 7 days; the construction waste of the closed storage yard is stacked and sorted by a loader.
Further, aggregate of a product generated after regeneration of the construction waste in the cement kiln cooperation system is used as a cement raw material and is sent into a raw material mill, and screened dregs are used as the cement raw material.
Furthermore, manual sorting system is equipped with two, and the letter sorting system has air conditioner, dust collecting equipment including in the letter sorting room, letter sorting personnel in the letter sorting room.
Furthermore, the construction waste treatment system is provided with a dry fog dust suppression device in the links of material conveying, screening, crushing and the like.
The method for cooperatively disposing the construction waste by the cement kiln is characterized by comprising the following steps of: the construction waste enters a factory and is sorted out by a specially-assigned person from large garbage (table and chair, sofa, cotton and the like) larger than 550 mm; feeding construction waste smaller than 550mm to a vibrating grid screening system by a loader through a plate feeder with a hopper; the vibration grid sieves two paths of materials: conveying large articles of oversize materials with the size of 300-550 mm of a vibration grid sieve to a manual sorting system through a belt conveyor, sorting out large combustible materials and the like, conveying the combustible materials to a garbage incinerator for incineration, and feeding the rest into a jaw crusher; the screen underflow of the vibrating grid screen with the size of less than 300mm enters a bouncing screen, the screen underflow of the bouncing screen is organic matters and muck, combustible matters are conveyed out along with a belt conveyor, heavy matters are conveyed to a manual sorting system along with a belt conveyor, the combustible matters are sorted out, iron-containing matters are sorted out, the remaining matters enter a jaw crusher to be coarsely broken, the coarsely broken materials enter a backstroke crusher to be finely crushed through a magnetic separator after metal is sorted out, and the finely crushed materials are screened through the magnetic separator to obtain finished products meeting the particle size.
The invention has the following beneficial effects:
1. because the construction waste is adopted as the mixed material, not only is a large amount of construction waste consumed, but also the land resource is protected, the stacking of waste residue is reduced, the ecological environment is protected, and the aim of developing low-carbon economy is fulfilled;
2. the invention saves cost and can reduce cost of cement admixture per ton.
3. After the method provided by the invention is implemented, the yield of the cement mill is greatly improved, the energy consumption of cement production is reduced, and the method conforms to the national concept of energy conservation and emission reduction.
4. The scheme provided by the invention can also reduce the production cost, improve the economic benefit, improve the cement use performance, enhance the market competitiveness and increase the enterprise vitality.
Drawings
FIG. 1 is a process flow diagram of the system of the present invention;
the notation in the figure is: 1-sealing a storage yard; 2-a loader; 3-a hopper; 4-a plate feeder; 5-a dry fog dust suppression device; 6-vibrating a lattice sieve; 7-a magnetic separator; 8-bouncing sieve; 9-a manual sorting system; 10-a belt conveyor; 11-jaw crusher; 12-a counterattack crusher; a-combustible material is sent to an incinerator; b-organic matter and muck; c-non-combustibles; d-combustible material is sent to an incinerator; e-combustible matter is sent to an incinerator; f-finished product.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and examples.
The system comprises a cement kiln cooperative processing system and a construction waste processing system. The cement kiln cooperative system is mainly characterized in that aggregate generated after the construction waste is regenerated is used as a cement raw material and is sent into a raw material mill, and screened residue soil is used as the cement raw material. The construction waste treatment mainly comprises storage, screening, iron removal, crushing and the like. The storage system is a closed storage yard 1, the construction waste is stacked in the closed storage yard 1 after entering the storage yard, and the capacity of the closed storage yard 1 can store the construction waste for 7 days; the construction waste in the closed storage yard 1 is stacked and sorted by a loader 2. The storage system transports the construction waste out of the closed storage yard through the loader 2, and is connected with the plate feeder 4 with the hopper 3 and the screening system, and the plate feeder 4 sends the construction waste into the vibrating screen screening system 6. The screening system comprises a vibration grid screen 6, a bouncing screen screening system 8 and a manual sorting system 9; the vibrating grid screen screening system 6 is divided into oversize products and undersize products by taking the size of 300mm construction waste as a boundary; the bounce screen 8 can separate light, heavy and organic matters, the bounce screen 8 can separate materials smaller than 150mm again, and the materials on the screen and below the screen are separated through granularity; the light matter is discharged at the end fan. The oversize material of the bounce screen 8 is 50-150mm, and the undersize material is less than 50 mm. The manual sorting system is provided with two places, the sorting system comprises sorting personnel in the sorting room, and an air conditioner and dust removing equipment are arranged in the sorting room. The iron removal system is used for separating metal objects by an electromagnetic iron removal process of a magnetic separator 7. The crushing system comprises a jaw crusher 11 and an impact crusher 12, wherein the jaw crusher 11 is used for primary crushing, and the impact crusher 12 is used for secondary crushing. The jaw crusher 11 is suitable for a concrete or brick-concrete construction waste crushing production line, and is generally used as coarse crushing equipment, wherein the feed particle size of the jaw crusher 11 is less than 550mm, and the discharge particle size is less than 150 mm. The impact crusher 12 is suitable for a brick-concrete or decoration type construction waste crushing production line and is generally used as middle crushing and fine crushing equipment, and the feeding granularity of the impact crusher 12 is less than 150mm, and the discharging granularity is less than 50 mm.
The construction waste treatment is provided with the dry fog dust suppression device 5 in the links of material conveying, screening, crushing and the like, so that the dust is ensured to meet the requirements of relevant specifications. The screening system is provided with a separating device for mud, plastics, wood blocks and the like, wherein materials such as reinforcing steel bars and the like which cannot be disposed but have useful values are sent to relevant departments for comprehensive utilization. The aggregate of the regenerated product of the construction waste is used as a cement raw material and sent into a raw material mill, the addition amount of the aggregate is not more than 10 percent, the cement raw material is not influenced, the strength meets the requirement, and the screened residue soil is used as the cement raw material. The sorted waste can be sent to a waste incinerator for fuel (plastic, wood, paper, cardboard, etc.).
The embodiment provides a method for cooperatively disposing construction waste by using a cement kiln, which comprises the following specific steps:
the construction waste enters a factory and is sorted out by a specially-assigned person from large garbage (table and chair, sofa, cotton and the like) larger than 550 mm; building garbage smaller than 550mm is fed to a vibrating screen screening system 6 by a loader 2 through a plate feeder 4 with a hopper 3; the vibrating grid screen 6 is divided into two paths of materials: conveying large articles of oversize materials of 300mm-550mm in the vibrating grid screen 6 to a manual sorting system 9 through a belt conveyor 10, sorting out large combustible materials and the like, conveying the combustible materials to a garbage incinerator for incineration, and conveying the rest into a jaw crusher 11; undersize materials with the particle size of less than 300mm in the vibrating screen 6 enter a bouncing screen 8, the undersize materials of the bouncing screen 8 are organic matters and dregs, the combustible materials are conveyed out along a belt conveyor, heavy materials are conveyed to a manual sorting system 9 along a belt conveyor 10, the combustible materials are sorted out, iron-containing materials are sorted out, the remaining materials enter a jaw crusher 11 for rough crushing, the roughly crushed materials pass through a magnetic separator 7, after metal is sorted out, the materials enter a counterattack type crusher 12 for fine crushing, and after fine crushing, finished products which accord with the particle size are obtained after screening by the magnetic separator 7. The product aggregate is used as a cement raw material and is fed into a raw material mill, the addition amount of the aggregate is not more than 10 percent generally, the product aggregate has no influence on the cement raw material, and the strength meets the requirement. The dregs separated from the construction waste are also used as cement raw materials.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention, and these modifications and decorations should also be regarded as being within the scope of the present invention.
Claims (10)
1. The utility model provides a cement kiln is system of disposing of building rubbish in coordination which characterized in that: the system comprises a cement kiln cooperative treatment system and a construction waste treatment system;
the cement kiln co-processing system is a cement incinerator;
the construction waste treatment system consists of a storage system, a screening system, an iron removal system and a crushing system;
the storage system is connected with the screening system through a plate feeder (4), the screening system is connected with the crushing system through a belt conveyor (10), and the iron removal system is arranged in the screening system and the crushing system.
2. The cement kiln co-disposed construction waste system of claim 1, wherein: the storage system is a closed storage yard (1) and is conveyed into the hopper (3) through the loader (2), and the hopper (3) is connected with the plate feeder (4).
3. The cement kiln co-disposed construction waste system of claim 2, wherein: the closed storage yard (1) stores construction waste for 7 days.
4. The cement kiln co-disposal construction waste system according to claim 1 or 2, wherein: the iron removal system is a magnetic separator (7).
5. The cement kiln co-disposed construction waste system of claim 4, wherein: the screening system includes vibration grizzly (6), bounce sieve (8), manual sorting system (9) and debris separator, slat feeder (4) are connected with vibration grizzly (6), manual sorting system (9) are 2, one platform directly links to each other with vibration grizzly (6) through belt conveyor (10), another platform is connected with vibration grizzly (6) through bounce sieve (8), be equipped with magnet separator (7) between vibration grizzly (6) and bounce sieve (8), bounce sieve (8) B export is connected with cement incinerator, 2 manual sorting system (9) all link to each other with broken system through belt conveyor (10).
6. The cement kiln co-disposed construction waste system of claim 4, wherein: the manual sorting system (9) comprises a sorting room and sorting personnel, and an air conditioner and dust removing equipment are arranged in the sorting room.
7. The cement kiln co-disposed construction waste system of claim 4, wherein: and a dry fog dust suppression device (5) is arranged above the vibrating screen (6).
8. The cement kiln co-disposed construction waste system of claim 4, wherein: the sundries separating device removes sundries such as mud, plastics, wood blocks and the like, and recycles materials such as reinforcing steel bars and the like which have useful values.
9. The cement kiln co-disposal construction waste system according to any one of claims 1 to 8, wherein: the crushing system comprises a jaw crusher (11) and an impact crusher (12), wherein the jaw crusher (11) is used for primary crushing, the impact crusher (12) is used for secondary crushing, and a magnetic separator (7) is arranged behind the jaw crusher (11) and the impact crusher (12).
10. A method for cooperatively disposing construction waste by a cement kiln is characterized by comprising the following steps: the method comprises the following steps: the construction waste enters a factory and is sorted out by a specially-assigned person from large garbage (table and chair, sofa, cotton and the like) larger than 550 mm; building garbage smaller than 550mm is fed to a vibrating screen screening system (6) by a loader (2) through a plate feeder (4) with a hopper (3); the vibrating grid screen (6) is divided into two paths of materials: conveying large articles of oversize materials with the size of 300-550 mm on a vibrating grid screen (6) to a manual sorting system (9) through a belt conveyor (10), sorting out large combustible materials and the like, conveying the combustible materials to a garbage incinerator for incineration, and conveying the rest of the combustible materials to a jaw crusher (11); the undersize material of vibration lattice sieve (6) <300mm gets into bounce sieve (8), bounce sieve (8) undersize material is organic matter and dregs, the combustible material transports along with the belt feeder, heavy material transports manual sorting system (9) along with belt conveyor (10), sort out the combustible material, sort out the iron-containing material, the remainder gets into jaw breaker (11) and carries out the coarse breaking, the material after the coarse breaking passes through magnet separator (7), get into impact breaker (12) after the metal is sorted out and carry out the fine crushing, get the finished product that accords with the particle diameter after magnet separator (7) screens in the fine crushing.
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| CN201811079782.7A CN110903044A (en) | 2018-09-14 | 2018-09-14 | System and method for cooperatively treating construction waste by using cement kiln |
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| CN201811079782.7A CN110903044A (en) | 2018-09-14 | 2018-09-14 | System and method for cooperatively treating construction waste by using cement kiln |
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Cited By (6)
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| CN111530597A (en) * | 2020-04-08 | 2020-08-14 | 平邑中联水泥有限公司 | Dry sand making method by environment-friendly recycling of waste limestone |
| CN112408832A (en) * | 2020-11-20 | 2021-02-26 | 江苏福翊铭环保科技有限公司 | Method for cooperatively treating construction waste by using bulk industrial solid waste |
| CN115446060A (en) * | 2022-08-19 | 2022-12-09 | 彩虹（合肥）液晶玻璃有限公司 | Base plate is from cleaning mechanism |
| CN115722518A (en) * | 2022-10-21 | 2023-03-03 | 太仓金马智能装备有限公司 | Low-carbon efficient recycling treatment system and method for building decoration garbage |
| CN115805226A (en) * | 2022-11-17 | 2023-03-17 | 石家庄市曲寨水泥有限公司 | A method for co-processing construction waste using a rotary kiln |
| CN116273844A (en) * | 2023-02-28 | 2023-06-23 | 上海黎明资源再利用有限公司 | A native waste treatment system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115446060A (en) * | 2022-08-19 | 2022-12-09 | 彩虹（合肥）液晶玻璃有限公司 | Base plate is from cleaning mechanism |
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| CN115805226A (en) * | 2022-11-17 | 2023-03-17 | 石家庄市曲寨水泥有限公司 | A method for co-processing construction waste using a rotary kiln |
| CN116273844A (en) * | 2023-02-28 | 2023-06-23 | 上海黎明资源再利用有限公司 | A native waste treatment system |
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