CN118437639A - Construction and decoration garbage recycling treatment method and system - Google Patents
Construction and decoration garbage recycling treatment method and system Download PDFInfo
- Publication number
- CN118437639A CN118437639A CN202410692071.6A CN202410692071A CN118437639A CN 118437639 A CN118437639 A CN 118437639A CN 202410692071 A CN202410692071 A CN 202410692071A CN 118437639 A CN118437639 A CN 118437639A
- Authority
- CN
- China
- Prior art keywords
- construction
- garbage
- stage
- treatment
- screening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B15/00—Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
-
- 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
- Y02W30/58—Construction or demolition [C&D] waste
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of recycling of construction waste, and particularly relates to a method and a system for recycling construction and decoration waste. The construction and decoration garbage recycling treatment method provided by the invention sequentially carries out pretreatment, classification screening and crushing treatment and finished product treatment on the construction and decoration garbage, realizes reasonable treatment of different garbage through classification, screening and screening treatment on the construction and decoration garbage, can efficiently recycle metal, recycled aggregate, combustible materials, scrap iron, slag soil and other types in the construction and decoration garbage, and greatly reduces the treatment cost of the construction and decoration garbage.
Description
Technical Field
The invention belongs to the technical field of recycling of construction waste, and particularly relates to a method and a system for recycling construction and decoration waste.
Background
The construction waste refers to the collective name of dregs, waste concrete, waste masonry and other wastes generated by people in the production activities of construction industries such as removal, construction, decoration, repair and the like. The quantity of the building rubbish in China accounts for 30% -40% of the total quantity of the urban rubbish. And, with the promotion of urban construction, china also adds about 300 hundred million square meters of building area, calculates with the standard of 500-600 tons per ten thousand square meters, and the quantity of the generated building rubbish is very huge. However, the garbage disposal is complicated due to the fact that the garbage raw material contains a large amount of components, which results in complicated disposal procedures and high cost.
In general, the recycling treatment of the construction waste is usually to perform pre-sorting and impurity removal on a feeding chain plate machine, however, the waste raw material needs to be spread on the chain plate machine as uniformly as possible in the step, but when in actual operation on site, the phenomenon that the material is accumulated intensively and is biased to one side of the chain plate machine often occurs, which affects the sorting of the waste, reduces the working efficiency, causes the hour treatment capacity of a disposal line to be difficult to realize large improvement, and also causes the problem that lighter impurities cannot be sorted out during sorting. In addition, in the existing traditional treatment and separation processes of construction waste and household waste, the method is mostly thought of heavy crushing and light screening, so that the screening effect is not ideal, and the resource recycling rate is low.
Therefore, the convenient and efficient construction and decoration garbage recycling treatment technology is very necessary to effectively reduce the environmental pollution caused by construction and decoration garbage and improve the resource utilization rate.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to provide a method for recycling construction and decoration garbage;
the second technical problem to be solved by the invention is to provide a construction and decoration garbage recycling treatment system.
The invention aims at realizing the following technical scheme:
the invention provides a method for recycling construction and decoration garbage, which comprises the following steps:
(1) Pretreatment: screening the garbage to be treated to remove the garbage which is not suitable for screening treatment;
(2) Grading: classifying and screening the pretreated garbage to obtain oversize material with the particle size of more than 100mm, medium material with the particle size of 20-100mm and dregs with the particle size of less than 20mm respectively;
(3) Sorting: impurity removal treatment is carried out on the oversize material and the screen medium material, and the treated oversize material and the treated screen medium material are combined and then crushed and separated;
(4) And (3) screening: screening the sorted aggregate into four grades, including: comprises large aggregate with the grain diameter of more than 30mm, coarse aggregate with the grain diameter of 10-30mm, medium aggregate with the grain diameter of 5-10mm and fine aggregate with the grain diameter of 0-5 mm.
Optionally, in the step (1), the pretreatment step includes a step of sorting and removing construction and finishing wastes having a particle size of more than 500mm, and a step of manually sorting out wastes unsuitable for the screening treatment.
Preferably, in the step (1), the method further comprises the step of crushing the separated construction and decoration garbage with the particle size of more than 500mm to the particle size of less than 500mm, and optionally performing a second pretreatment.
Optionally, in the step (1), the method further comprises the step of further crushing the construction and decoration garbage with the particle size smaller than 500mm to the particle size less than or equal to 160 mm.
Optionally, in the step (3), the impurity removal step includes a step of magnetic separation and/or air separation treatment;
preferably, the impurity removal treatment step of the oversize material comprises a step of magnetic separation treatment;
Preferably, the impurity removal treatment step of the screen material comprises a step of air separation treatment;
the combination of the oversize and the oversize further comprises the step of carrying out a second manual sorting.
Optionally, in the step (3), the method further comprises a step of performing secondary magnetic separation and secondary wind separation on the manually separated garbage.
Optionally, in the step (3), the crushing step includes a fine crushing step of subjecting the garbage to a particle size of 30mm or less.
Optionally, in the step (4), the method further comprises the step of refluxing the aggregate with the particle size of more than 30mm for fine crushing treatment.
The invention also provides a construction and decoration garbage recycling treatment system, which comprises a pretreatment unit, a classification screening and crushing treatment unit and a finished product treatment unit which are sequentially connected;
The pretreatment unit comprises a first-stage sorting chamber and is used for sorting construction and decoration garbage with the particle size of more than 500mm and garbage which is not suitable for screening treatment;
The classifying, screening and crushing treatment unit comprises a heavy bar screen and impurity removal equipment and is used for carrying out primary screening and impurity removal treatment on the garbage to be treated;
the finished product treatment unit comprises a finished product screen and is used for screening the treated garbage with aggregates with different particle sizes.
Optionally, the classifying screen crushing processing unit comprises connected:
The heavy bar screen is used for carrying out primary screening on the construction and decoration garbage;
the first-stage magnetic separator is used for carrying out first-stage magnetic separation on the construction and decoration garbage;
the second-stage sorting chamber is used for carrying out second-stage sorting on the construction and decoration garbage;
the three-stage negative pressure winnowing machine is used for carrying out three-stage winnowing on the construction and decoration garbage;
the second jaw crusher is used for carrying out secondary crushing on the construction and decoration garbage;
the third-level magnetic separator is used for carrying out third-level magnetic separation on the construction and decoration garbage;
the trans-crusher is used for carrying out three-stage crushing on the construction and decoration garbage;
the eddy current sorting machine is used for carrying out eddy current sorting on the construction and decoration garbage;
the vibrating feeder is used for carrying out secondary screening on the construction and decoration garbage;
The first round vibrating screen is used for carrying out three-level screening on the construction and decoration garbage;
the second-stage magnetic separator is used for carrying out second-stage magnetic separation on the construction and decoration garbage;
the secondary negative pressure winnowing machine is used for secondary air separation of the construction and decoration garbage;
The first-stage negative pressure winnowing machine is used for carrying out first-stage winnowing on the construction and decoration garbage.
Optionally, the preprocessing unit includes connected:
The garbage storage warehouse is used for storing the recycled construction and decoration garbage;
The pre-broken bag sorting chamber is used for sorting and distinguishing the construction and decoration garbage with the particle size smaller than 500mm from the construction and decoration garbage with the particle size larger than 500 mm;
the plate chain conveyor is used for carrying out subsequent sorting on the construction and decoration garbage with the particle size less than 500 mm;
The first-stage sorting chamber is used for carrying out first-stage sorting on the construction and decoration garbage with the particle size less than 500 mm;
and the jaw crusher is used for carrying out primary crushing on the construction and decoration garbage with the particle size of more than 500 mm.
Optionally, the finishing unit comprises connected:
the finished product sieve is used for carrying out four-stage sieving on the construction and decoration garbage to prepare the fine aggregate with the grain diameter smaller than 5mm, the medium aggregate with the grain diameter of 5-10 mm, the coarse aggregate with the grain diameter of 10-30 mm and the large aggregate with the grain diameter larger than 30 mm;
the fourth-level air selector is used for carrying out fourth-level air selection on the construction and decoration garbage;
and the five-stage air selector is used for performing five-stage air selection on the construction and decoration garbage.
Optionally, a construction and finishing waste recycling system further comprises a separate silo for each aggregate and screen.
Optionally, the construction and decoration garbage recycling system further comprises a dust removing pipeline interface arranged on each main device and used for being connected with the dust removing system in a matched mode, and dust reducing and air sucking points are arranged at the connecting points of the devices so as to achieve the effect of integral dust reduction.
Optionally, the construction and decoration garbage recycling treatment system further comprises a separate fresh air system matched with the secondary manual sorting chamber, and negative pressure is utilized for dust removal.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. The construction and decoration garbage recycling treatment method provided by the invention sequentially carries out pretreatment, classification screening and crushing treatment and finished product treatment on the construction and decoration garbage, wherein the classification screening and crushing treatment divides the construction and decoration garbage into different particle sizes for magnetic separation, sorting and winnowing treatment, so that metals, recycled aggregate, combustible materials, scrap iron and dregs in the construction and decoration garbage can be efficiently recovered, and meanwhile, the problem of low material treatment efficiency caused by the phenomenon that materials are accumulated intensively and deviate to one side of a chain plate machine can be avoided, and the treatment cost of the construction and decoration garbage is greatly reduced. The garbage is firstly manually sorted and matched with air separation, then the materials are crushed by using a crusher, and finally the eddy current separator and the air separator are used for further impurity removal; meanwhile, each discharging end is matched with a separate bin in one direction, so that a transportation transit line is shortened; meanwhile, each device is matched with the whole dust removal, so that secondary pollution to the environment is greatly reduced, recycled aggregate can be obtained, and the maximum utilization of resources is realized.
2. The invention provides a construction and decoration garbage recycling treatment system, which comprises a pretreatment unit, a grading screening and crushing treatment unit and a finished product treatment unit which are sequentially connected, wherein the grading screening and crushing treatment unit is provided with a multi-stage screening and crushing treatment to achieve the aim of grading treatment of the size of materials, the multi-stage screening treatment can fully recover metals, combustible materials, waste iron and dregs of the materials with different particle diameters, the efficiency of post-finished product treatment is improved, the multi-stage crushing treatment can fully crush the materials, the follow-up winnowing, magnetic separation and sorting are facilitated, and the treatment efficiency of the materials is greatly improved.
3. According to the construction and decoration garbage recycling treatment system provided by the invention, the particle size of the materials is controlled below 100mm by the pretreatment unit, so that the follow-up procedures can be greatly facilitated, and most of large-volume sundries can be removed by primary sorting.
4. According to the construction and decoration garbage recycling treatment system provided by the invention, the finished product treatment unit is used for treating and screening materials into fine aggregates with the particle size less than 5mm, medium aggregates with the particle size of 5-10 mm, coarse aggregates with the particle size of 10-30 mm and large aggregates with the particle size of more than 30mm, and conveying the large aggregates with the particle size of more than 30mm back to the crusher for crushing, so that the purpose of efficiently treating the materials is realized, the aggregates with different particle sizes can be used for recycling and producing different products, the efficient multi-directional selling of the materials is realized, and considerable economic benefits can be brought.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which,
FIG. 1 is a schematic structural diagram of a construction and finishing refuse recycling system according to embodiment 1 of the present invention;
The reference numerals are explained as follows: the garbage collection device comprises a 1-garbage storage warehouse, a 2-pre-broken bag sorting chamber, a 3-plate chain conveyor, a 4-first-stage sorting chamber, a 5-heavy bar screen, a 6-first-stage magnetic separator, a 7-second-stage sorting chamber, an 8-third-stage negative pressure winnowing machine, a No. 9-second jaw crusher, a 10-third-stage magnetic separator, an 11-impact crusher, a 12-eddy current separator, a 13-finished product screen, a 14-fourth-stage air separator, a 15-fifth-stage air separator, a 16-vibration feeder, a 17-first-stage circular vibration screen, a 18-second-stage magnetic separator, a 19-second-stage negative pressure winnowing machine, a 20-first-stage negative pressure winnowing machine and a No. 21-first jaw crusher.
Detailed Description
The following examples are provided for a better understanding of the present invention and are not limited to the preferred embodiments described herein, but are not intended to limit the scope of the invention, any product which is the same or similar to the present invention, whether in light of the present teachings or in combination with other prior art features, falls within the scope of the present invention.
The specific experimental procedures or conditions are not noted in the examples and may be followed by the operations or conditions of conventional experimental procedures described in the literature in this field. The reagents or apparatus used were conventional reagent products commercially available without the manufacturer's knowledge.
Example 1
The system structure schematic diagram shown in fig. 1, which is a construction and decoration garbage recycling treatment system in this embodiment, includes a pretreatment unit, a classification screening and crushing treatment unit and a finished product treatment unit which are sequentially connected.
The system structure schematic diagram shown in fig. 1, the preprocessing unit is used for classifying and preprocessing the garbage to be processed, and the preprocessing unit includes: a garbage stacker 1, a pre-broken bag sorting chamber 2, a plate chain conveyor 3, a first-stage sorting chamber 4 and a jaw crusher 21. The pretreatment unit can break bags of the construction and decoration garbage, break the construction and decoration garbage with the particle size more than 500mm and sort the construction and decoration garbage with the particle size less than 500 mm.
The garbage stacker 1, the pre-broken bag sorting chamber 2, the plate chain conveyor 3 and the first-stage sorting chamber 4 are sequentially connected, and a first inlet of the plate chain conveyor 3 is connected with a first outlet of the pre-broken bag sorting chamber 2; the inlet of the jaw crusher 21 is connected with the second outlet of the pre-broken bag sorting chamber 2, and the outlet of the jaw crusher 21 is connected with the second inlet of the plate link chain conveyor 3.
The garbage stacker 1 is used for storing recycled construction and decoration garbage; the pre-broken bag sorting chamber 2 is used for sorting and distinguishing building and decoration garbage with the particle size less than 500mm from building and decoration garbage with the particle size more than 500 mm; the plate chain conveyor 3 is used for conveying construction and decoration garbage with the particle size less than 500mm to the first-stage sorting chamber 4; the first-stage sorting chamber 4 is used for carrying out first-stage sorting on construction and decoration garbage with the particle size less than 500 mm; the jaw crusher 21 is used for primary crushing of construction and finishing waste having a particle size of > 500 mm.
The system structure schematic diagram shown in fig. 1, the classifying screening and crushing treatment unit comprises: heavy bar screen 5, first-stage magnet separator 6, second grade letter sorting room 7, tertiary negative pressure air separator 8, no. two jaw breaker 9, tertiary magnet separator 10, impact breaker 11, eddy current separator 12, vibration feeder 16, first-stage circular vibration sieve 17, second grade magnet separator 18, second grade negative pressure air separator 19, first-stage negative pressure air separator 20. In this embodiment, the classifying screening and crushing unit is used for classifying and crushing the construction and decoration garbage.
The heavy bar screen 5, the first-stage magnetic separator 6, the second-stage sorting chamber 7, the third-stage negative pressure winnowing machine 8, the second jaw crusher 9, the third-stage magnetic separator 10, the impact crusher 11 and the eddy current separator 12 are sequentially connected, an inlet of the first-stage magnetic separator 6 is connected with a first outlet of the heavy bar screen 5, and a first outlet of the first-stage magnetic separator 6 is connected with a first inlet of the second-stage sorting chamber 7; the vibrating feeder 16, the primary round vibrating screen 17, the secondary magnetic separator 18 and the secondary negative pressure winnowing machine 19 are sequentially connected, an inlet of the vibrating feeder 16 is connected with a second outlet of the heavy bar screen 5, and an outlet of the secondary negative pressure winnowing machine 19 is connected with a second inlet of the secondary sorting chamber 7; the inlet of the first-stage negative pressure winnowing machine 20 is respectively connected with the second outlet of the vibrating feeder 16 and the second outlet of the first-stage magnetic separator 6, and the outlet of the first-stage negative pressure winnowing machine 20 is connected with the second inlet of the second-stage sorting chamber 7.
The heavy bar screen 5 is used for screening construction and decoration garbage at a first stage; the first-stage magnetic separator 6 is used for carrying out first-stage magnetic separation on the construction and decoration garbage; the second-stage sorting chamber 7 is used for carrying out second-stage sorting on construction and decoration garbage; the three-stage negative pressure winnowing machine 8 is used for carrying out three-stage winnowing on construction and decoration garbage; the second jaw crusher 9 is used for performing secondary crushing on construction and decoration garbage; the three-stage magnetic separator 10 is used for carrying out three-stage magnetic separation on construction and decoration garbage; the impact crusher 11 is used for performing three-level crushing on construction and decoration garbage; the eddy current separator 12 is used for carrying out eddy current separation on construction and decoration garbage; the vibrating feeder 16 is used for carrying out secondary screening on construction and decoration garbage; the first round vibrating screen 17 is used for carrying out three-level screening on construction and decoration garbage; the secondary magnetic separator 18 is used for carrying out secondary magnetic separation on construction and decoration garbage; the secondary negative pressure winnowing machine 19 is used for secondary air separation of construction and decoration garbage; the primary negative pressure winnowing machine 20 is used for primary winnowing of construction and finishing waste.
The system structure schematic shown in fig. 1, the finished product processing unit includes: a finished product screen 13, a four-stage air selector 14 and a five-stage air selector 15; the method is used for classifying and treating the treated garbage finished products.
Wherein, the inlet of the four-stage air selector 14 is connected with the first outlet of the finished product screen 13, and the inlet of the five-stage air selector 15 is connected with the second outlet of the finished product screen 13; the finished product sieve 13 is used for carrying out four-stage sieving on construction and decoration garbage to prepare fine aggregate with the grain diameter less than 5mm, middle aggregate with the grain diameter of 5-10 mm, coarse aggregate with the grain diameter of 10-30 mm and large aggregate with the grain diameter more than 30 mm.
The fourth-level air classifier 14 is used for performing fourth-level air classification on construction and decoration waste; the five-stage air classifier 15 is used for performing five-stage air classification on construction and decoration wastes; the third outlet of the finished screen 13 is connected to the second inlet of the impact crusher 11 for the return crushing of large aggregates with a particle size > 30 mm.
As an alternative, the construction and finishing waste recycling system further comprises a separate silo for each aggregate and screen reject.
As an alternative scheme, the construction and decoration garbage recycling treatment system further comprises a dust removing pipeline interface which is arranged on each main device and used for being matched with a pipeline to connect with a dust removing system, and dust reducing and air suction points are arranged at the device connecting points so as to achieve the effect of integral dust reduction.
As an alternative, the secondary manual sorting chamber 7 removes dust by using negative pressure and is matched with an independent fresh air system.
Example 2
The construction waste recycling treatment process of the embodiment comprises the following steps:
(1) Conveying building garbage or decoration garbage to a garbage storage warehouse, sorting by pre-breaking bags, picking out large reinforced concrete in the building garbage and the decoration garbage, and carrying out bag breaking treatment on the bagged decoration garbage; crushing the manually selected large reinforced concrete with the grain diameter larger than 500 mm; after the crushing treatment, forming new construction waste or decoration waste with the particle size smaller than 500mm, and continuously transporting and further treating the construction waste and the decoration waste;
(2) Conveying construction garbage or decoration garbage into a garbage treatment production line by using a loader, and conveying the construction garbage or decoration garbage to a heavy bar screen through a chain plate conveyor; wherein, the two sides of the chain plate conveyor are provided with manual sorting, and the sortable sundries in the chain plate conveyor, such as strips of cloth strips and the like, are removed;
(3) The heavy bar screen screens the received construction waste or decoration waste into two grades of materials, wherein the two grades of materials comprise oversize materials with the grain diameter of more than 100mm and screen middlings with the grain diameter of less than 100 mm; the oversize products with the grain diameter of more than 100mm are transported to the manual sorting chamber through a conveyor, a first-stage magnetic separator is arranged on the conveyor, and iron objects in the oversize products are removed by the first-stage magnetic separator; the method comprises the steps that a screen medium material with the particle size smaller than 100mm is conveyed to an oscillating feeder through a conveyor, the screen medium material with the particle size smaller than 100mm is screened into two grades of materials through the screening of the oscillating feeder, the two grades of materials comprise materials with the particle size of 65-100mm and materials with the particle size smaller than 65mm, the materials with the particle size of 65-100mm are conveyed to a first-stage negative pressure winnowing machine for sorting, light matters in the materials are removed, and the materials are conveyed to a manual sorting chamber through the conveyor after being screened by the first-stage negative pressure winnowing machine; conveying the materials with the particle size smaller than 65mm to a first-stage circular vibrating screen for three-stage screening by a conveyor, removing dregs smaller than 20mm, sequentially conveying the materials to a second-stage magnetic separator for second-stage magnetic separation after three-stage screening by the first-stage circular vibrating screen, and conveying the dregs smaller than 20mm to a dregs bin by a conveyor by a second-stage negative pressure winnowing machine for second-stage wind separation to remove ferrous metals and light matters, wherein the materials are continuously conveyed to a manual sorting chamber;
(4) The manual sorting chamber is used for manually sorting the received materials output by the first-stage magnetic separator, the second-stage negative pressure winnowing machine and the first-stage negative pressure winnowing machine, and removing sundries, woody objects, PVC, papers and the like in the materials; the materials subjected to impurity removal in the manual sorting chamber are conveyed to a three-stage negative pressure winnowing machine by a conveyor, the three-stage negative pressure winnowing machine further carries out winnowing and impurity removal on light matters in the materials, and the screened matters are conveyed to a jaw crusher by the conveyor; crushing the materials into aggregates with the particle size of less than 100mm by a jaw crusher; conveying the aggregate to a reaction crusher by a conveyor for fine crushing; a three-stage magnetic separator is arranged on the conveyor between the jaw crusher and the impact crusher, and the three-stage magnetic separator removes iron in aggregate output by the jaw crusher;
(5) The eddy current separator is arranged behind the impact crusher and is used for removing copper, aluminum and other nonferrous metals in the aggregate output by the impact crusher; the materials subjected to impurity removal by the eddy current separator are conveyed to a finished product sieve by a conveyor, the finished product sieve screens the aggregates output by the eddy current separator into four grades of aggregates, and the four grades of aggregates comprise large aggregates with the particle size of more than 30mm, coarse aggregates with the particle size of 10-30mm, medium aggregates with the particle size of 5-10mm and fine aggregates with the particle size of 0-5 mm; wherein, the large aggregate with the grain diameter larger than 30mm is output by the conveyor and returned to the impact crusher for crushing again; the four-stage air classifier removes light matters in coarse aggregate with the grain diameter of 10-30mm output by the finished product sieve, and further purifies the coarse aggregate; the five-stage air selector removes light matters in the medium aggregate with the grain diameter of 5 to 10mm output by the finished product sieve, and further purifies the medium aggregate;
(6) All the impurities and aggregates are transported to corresponding bins by using a conveyor, wherein each bin is arranged at one side of a factory building, so that transportation and management are facilitated; the whole production line is in a full-sealing mode, each main device is provided with a dust removing pipeline interface which is used for being connected to a central dust removing system in a matched mode, and dust reducing and air suction points are arranged at the device connecting points so as to achieve the effect of integral dust reduction; the manual sorting chamber removes dust by utilizing negative pressure and is matched with an independent fresh air system. The dust pollution is reduced to the greatest extent, and the environment-friendly requirement is met.
Example 3
The construction and decoration garbage recycling treatment process comprises the following steps:
(1) Conveying the construction waste or the decoration waste to a designated area, sorting by pre-breaking bags, picking out large reinforced concrete in the construction waste or the decoration waste, and carrying out bag breaking treatment on the bagged decoration waste; crushing the manually selected large reinforced concrete blocks; forming new construction waste or decoration waste after crushing treatment;
(2) Conveying construction garbage or decoration garbage into a garbage treatment production line by using a loader, and conveying the construction garbage or decoration garbage to a heavy bar screen through a chain plate conveyor; wherein, the two sides of the chain plate conveyor are provided with manual sorting, and the sortable sundries in the chain plate conveyor, such as strips of cloth strips and the like, are removed;
(3) The heavy bar screen screens the received construction waste or decoration waste into three grades of materials, wherein the three grades of materials comprise oversize materials larger than 100mm, screen middlings of 20-100mm and dregs smaller than 20 mm; the oversize products with the diameter of more than 100mm are transported to the manual sorting chamber through a conveyor, a first-stage magnetic separator is arranged on the conveyor, and iron objects in the oversize products are removed by the first-stage magnetic separator; conveying the sifted material with the size of 20-100mm to a first-stage negative pressure winnowing machine through a conveyor, separating the sifted material by the first-stage negative pressure winnowing machine, removing light matters in the sifted material, and conveying the sifted material of the first-stage negative pressure winnowing machine to a manual sorting chamber through the conveyor; the muck less than 20mm is transported to a muck bin through a conveyor;
(4) The manual sorting chamber is used for manually sorting the received materials output by the first-stage magnetic separator and the first-stage negative pressure air separator to remove sundries, woody objects, PVC, papers and the like in the materials; the materials subjected to impurity removal in the manual sorting chamber are conveyed to a three-stage negative pressure winnowing machine by a conveyor, the three-stage negative pressure winnowing machine further carries out winnowing and impurity removal on light matters in the materials, and the screened matters are conveyed to a jaw crusher by the conveyor; crushing the materials into aggregate with the size of less than 100mm by a jaw crusher; conveying the aggregate to a reaction crusher by a conveyor for fine crushing; a three-stage magnetic separator is arranged on the conveyor between the jaw crusher and the impact crusher, and the three-stage magnetic separator removes iron in aggregate output by the jaw crusher;
(5) The eddy current separator is arranged behind the impact crusher and is used for removing copper, aluminum and other nonferrous metals in the aggregate output by the impact crusher; the materials subjected to impurity removal by the eddy current separator are conveyed to a finished product sieve by a conveyor, the finished product sieve screens the aggregates output by the eddy current separator into four grades of aggregates, and the four grades of aggregates comprise large aggregates larger than 30mm, coarse aggregates of 10-30mm, medium aggregates of 5-10mm and fine aggregates of 0-5 mm; wherein, the large aggregate with the diameter of more than 30mm is output by the conveyor and returned to the impact crusher for crushing again; the four-stage air classifier removes light matters in the coarse aggregate with the diameter of 10-30mm output by the finished product sieve, and further purifies the coarse aggregate; the five-stage air classifier removes light matters in the medium aggregate with the size of 5-10mm output by the finished product sieve, and further purifies the medium aggregate;
(6) All the impurities and the aggregates are transported to corresponding bins by using a conveyor, wherein each bin is arranged on one side of the factory building, and transportation and management are facilitated. The whole production line is in a full-sealing mode, each main device is provided with a dust removing pipeline interface which is used for being connected to a central dust removing system in a matched mode, and dust reducing and air suction points are arranged at the device connecting points so as to achieve the effect of integral dust reduction; the manual sorting chamber removes dust by utilizing negative pressure and is matched with an independent fresh air system. The dust pollution is reduced to the greatest extent, and the environment-friendly requirement is met.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. The method for recycling the construction and decoration garbage is characterized by comprising the following steps of:
(1) Pretreatment: screening the garbage to be treated to remove the garbage which is not suitable for screening treatment;
(2) Grading: classifying and screening the pretreated garbage to obtain oversize products with the particle size of more than 100mm, oversize products with the particle size of 20-100mm and dregs with the particle size of less than 20mm respectively;
(3) Sorting: impurity removal treatment is carried out on the oversize material and the screen medium material, and the treated oversize material and the treated screen medium material are combined and then crushed and separated;
(4) And (3) screening: screening the sorted aggregate into four grades, including: comprises large aggregate with the grain diameter of more than 30mm, coarse aggregate with the grain diameter of 10-30mm, medium aggregate with the grain diameter of 5-10mm and fine aggregate with the grain diameter of 0-5 mm.
2. The method for recycling construction and finishing waste according to claim 1, wherein in the step (1), the pretreatment step includes a step of sorting and removing construction and finishing waste having a particle size of more than 500mm, and a step of manually sorting out waste unsuitable for the screening treatment;
Preferably, in the step (1), the method further comprises the step of crushing the separated construction and decoration garbage with the particle size of more than 500mm to the particle size of less than 500mm, and optionally performing a second pretreatment.
3. The method for recycling construction and finishing waste according to claim 2, wherein in the step (1), the construction and finishing waste having a particle size of less than 500mm is further crushed to a particle size of 160mm or less.
4. A method of recycling construction and finishing waste according to any one of claims 1 to 3, wherein in the step (3), the impurity removing step includes a step of magnetic separation and/or air separation treatment;
preferably, the impurity removal treatment step of the oversize material comprises a step of magnetic separation treatment;
Preferably, the impurity removal treatment step of the screen material comprises a step of air separation treatment;
the combination of the oversize and the oversize further comprises the step of carrying out a second manual sorting.
5. The method for recycling construction and finishing waste according to claim 4, wherein in the step (3), the steps of performing secondary magnetic separation and secondary wind separation on the manually separated waste are further included;
preferably, in the step (3), the crushing step includes a fine crushing step of subjecting the garbage to a particle size of 30mm or less.
6. The method for recycling construction and finishing waste according to any one of claims 1 to 5, wherein in the step (4), the aggregate having a particle diameter of > 30mm is returned to the fine crushing step.
7. The construction and decoration garbage recycling treatment system is characterized by comprising a pretreatment unit, a classification screening and crushing treatment unit and a finished product treatment unit which are sequentially connected; wherein,
The pretreatment unit comprises a first-stage sorting chamber (4) for sorting construction and decoration garbage with the particle size of more than 500mm and garbage unsuitable for screening treatment;
The classifying screening and crushing treatment unit comprises a heavy bar screen (5) and impurity removal equipment and is used for carrying out primary screening and impurity removal treatment on garbage to be treated;
The finished product treatment unit comprises a finished product screen (13) for screening the treated garbage with aggregates with different particle sizes.
8. The construction and finishing waste recycling treatment system according to claim 7, wherein the classifying screen crushing treatment unit comprises connected:
the heavy bar screen (5) is used for carrying out primary screening on the construction and decoration garbage;
the first-stage magnetic separator (6) is used for carrying out first-stage magnetic separation on the construction and decoration garbage;
a secondary sorting chamber (7) for secondary sorting of the construction and finishing waste;
the three-stage negative pressure winnowing machine (8) is used for three-stage winnowing of the construction and decoration garbage;
a second jaw crusher (9) for performing a secondary crushing of the construction and finishing waste;
the three-stage magnetic separator (10) is used for carrying out three-stage magnetic separation on the construction and decoration garbage;
a reaction crusher (11) for three-stage crushing of the construction and finishing waste;
an eddy current separator (12) for eddy current separation of the construction and finishing waste;
An oscillating feeder (16) for secondary screening of said construction and finishing waste;
a first circular vibrating screen (17) for three-stage screening of the construction and decoration garbage;
a secondary magnetic separator (18) for performing secondary magnetic separation on the construction and decoration garbage;
the secondary negative pressure winnowing machine (19) is used for secondary air separation of the construction and decoration garbage;
and the primary negative pressure winnowing machine (20) is used for carrying out primary winnowing on the construction and decoration garbage.
9. The construction and finishing waste recycling treatment system according to claim 7 or 8, wherein the pretreatment unit comprises connected:
the garbage storage warehouse (1) is used for storing the recycled construction and decoration garbage;
a pre-broken bag sorting chamber (2) for sorting and distinguishing the construction and decoration garbage with the particle size less than 500mm from the construction and decoration garbage with the particle size more than 500 mm;
a plate chain conveyor (3) for the subsequent sorting of the construction and finishing waste with a particle size of less than 500 mm;
The first-stage sorting chamber (4) is used for carrying out first-stage sorting on the construction and decoration garbage with the particle size less than 500 mm;
And a jaw crusher (21) for primary crushing of the construction and finishing waste with the particle size of more than 500 mm.
10. The construction and finishing waste recycling treatment system according to any one of claims 7-9, wherein the finishing treatment unit comprises connected:
The finished product sieve (13) is used for carrying out four-stage sieving on the construction and decoration garbage to prepare the fine aggregate with the grain diameter smaller than 5mm, the medium aggregate with the grain diameter of 5-10 mm, the coarse aggregate with the grain diameter of 10-30 mm and the large aggregate with the grain diameter larger than 30 mm;
A fourth air classifier (14) for fourth air classifying the construction and finishing waste;
and the five-stage air selector (15) is used for performing five-stage air selection on the construction and decoration garbage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410692071.6A CN118437639A (en) | 2024-05-30 | 2024-05-30 | Construction and decoration garbage recycling treatment method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410692071.6A CN118437639A (en) | 2024-05-30 | 2024-05-30 | Construction and decoration garbage recycling treatment method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118437639A true CN118437639A (en) | 2024-08-06 |
Family
ID=92332898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410692071.6A Pending CN118437639A (en) | 2024-05-30 | 2024-05-30 | Construction and decoration garbage recycling treatment method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118437639A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118988520A (en) * | 2024-08-29 | 2024-11-22 | 北京建工资源循环利用股份有限公司 | Sorting method and application of decoration garbage |
| CN120734080A (en) * | 2025-09-08 | 2025-10-03 | 湖南麓鑫环保科技有限公司 | Fine processing production line and production method for construction waste |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282253A (en) * | 2017-05-17 | 2017-10-24 | 北京建工资源循环利用投资有限公司 | Treating construction waste method |
| CN111744941A (en) * | 2020-07-24 | 2020-10-09 | 北京建工资源循环利用投资有限公司 | Decoration garbage disposal method |
| CN112246389A (en) * | 2020-08-21 | 2021-01-22 | 中国市政工程华北设计研究总院有限公司 | System suitable for soft and hard classification treatment of decoration garbage and operation method |
| CN113000568A (en) * | 2021-03-19 | 2021-06-22 | 天津市市政工程设计研究院 | Garbage and decoration garbage coprocessing system tears open a house |
| CN113070321A (en) * | 2021-03-23 | 2021-07-06 | 北京格林雷斯环保科技有限公司 | Construction waste treatment method |
| CN116474914A (en) * | 2023-04-25 | 2023-07-25 | 苏州嘉诺环境科技股份有限公司 | A high-efficiency sorting and processing system device and system method for construction demolition waste |
-
2024
- 2024-05-30 CN CN202410692071.6A patent/CN118437639A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282253A (en) * | 2017-05-17 | 2017-10-24 | 北京建工资源循环利用投资有限公司 | Treating construction waste method |
| CN111744941A (en) * | 2020-07-24 | 2020-10-09 | 北京建工资源循环利用投资有限公司 | Decoration garbage disposal method |
| CN112246389A (en) * | 2020-08-21 | 2021-01-22 | 中国市政工程华北设计研究总院有限公司 | System suitable for soft and hard classification treatment of decoration garbage and operation method |
| CN113000568A (en) * | 2021-03-19 | 2021-06-22 | 天津市市政工程设计研究院 | Garbage and decoration garbage coprocessing system tears open a house |
| CN113070321A (en) * | 2021-03-23 | 2021-07-06 | 北京格林雷斯环保科技有限公司 | Construction waste treatment method |
| CN116474914A (en) * | 2023-04-25 | 2023-07-25 | 苏州嘉诺环境科技股份有限公司 | A high-efficiency sorting and processing system device and system method for construction demolition waste |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118988520A (en) * | 2024-08-29 | 2024-11-22 | 北京建工资源循环利用股份有限公司 | Sorting method and application of decoration garbage |
| CN120734080A (en) * | 2025-09-08 | 2025-10-03 | 湖南麓鑫环保科技有限公司 | Fine processing production line and production method for construction waste |
| CN120734080B (en) * | 2025-09-08 | 2025-12-09 | 湖南麓鑫环保科技有限公司 | Fine processing production line and production method for construction waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202192080U (en) | Integral crushing and comprehensive recovery processing line for scraped car body | |
| CN118437639A (en) | Construction and decoration garbage recycling treatment method and system | |
| CN107362977B (en) | Automatic sorting line for decoration garbage | |
| CN113000568A (en) | Garbage and decoration garbage coprocessing system tears open a house | |
| CN110523639A (en) | Method and system for processing decoration waste | |
| CN107282253A (en) | Treating construction waste method | |
| CN1795055A (en) | Municipal solid waste sorting system and method | |
| CN112474712A (en) | Building decoration garbage resource utilization system and method | |
| CN103567209A (en) | Resourceful treatment system and resourceful treatment method for decoration construction waste | |
| CN110394225B (en) | Brick-concrete separation comprehensive disposal process for construction waste | |
| CN112354669A (en) | Efficient environment-friendly building waste concrete treatment process | |
| CN111922044A (en) | Construction waste sorting method and system | |
| CN111744941A (en) | Decoration garbage disposal method | |
| CN212018915U (en) | Building decoration rubbish resourceful treatment system | |
| CN115672508A (en) | House-dismantling garbage treatment system and sorting method | |
| CN115090655A (en) | A kind of demolition and decoration garbage recycling and processing method | |
| CN116474914A (en) | A high-efficiency sorting and processing system device and system method for construction demolition waste | |
| CN119588628A (en) | Intelligent identification and efficient separation method of organic and inorganic materials in construction waste | |
| CN111558593A (en) | Building decoration garbage sorting process | |
| CN111360042A (en) | Building decoration garbage recycling treatment system and process | |
| CN214053078U (en) | Decoration garbage classification system | |
| CN211134624U (en) | Processing system of fitment rubbish | |
| CN114178034A (en) | Sorting method of scrap car crushing residues | |
| CN221108500U (en) | Disposal device for construction waste | |
| CN219663938U (en) | Decoration garbage disposal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |