CN111482256A - Construction waste recycling process - Google Patents
Construction waste recycling process Download PDFInfo
- Publication number
- CN111482256A CN111482256A CN202010298255.6A CN202010298255A CN111482256A CN 111482256 A CN111482256 A CN 111482256A CN 202010298255 A CN202010298255 A CN 202010298255A CN 111482256 A CN111482256 A CN 111482256A
- Authority
- CN
- China
- Prior art keywords
- construction waste
- aggregate
- particle size
- larger
- recycling process
- 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
Images
Classifications
-
- 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
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
- B03B9/065—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial the refuse being building rubble
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- 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
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
-
- 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
- Y02W30/62—Plastics recycling; Rubber recycling
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a construction waste recycling process, relates to the field of construction waste recycling, and comprises the following steps: primary crushing, magnetic separation, washing flotation, winnowing, primary screening, secondary crushing, drying, secondary screening, aggregate shaping and tertiary screening. Through the construction waste treatment process disclosed by the disclosure, the construction waste is treated into the recyclable aggregate, the quality of the aggregate is improved, the efficient recycling of resources is realized, and the environment pollution caused by landfill construction waste is avoided.
Description
Technical Field
The disclosure relates to the field of construction waste recycling, in particular to a construction waste recycling process.
Background
The construction waste refers to waste soil, waste materials and other wastes generated in the process of building, reconstruction, decoration and removal of various buildings, and mainly comprises building residue soil, waste bricks, waste concrete, steel, wood, plastics and other materials.
With the acceleration of industrialization and urbanization processes, the construction industry is also developed rapidly, so that a large amount of construction waste is generated, if the construction waste is only subjected to landfill treatment, a large amount of landfill sites are needed, waste of soil resources is caused, great pollution is caused to soil, underground water quality and the like, and the sustainable development strategy is not met.
Therefore, the development of the construction waste recycling industry needs to take the way of ecological environment materials and green construction materials and the way of high value-added recycling, otherwise, the construction waste recycling industry is difficult to make a major breakthrough.
Related standards are also provided in China, and the standards mainly comprise recycled coarse aggregates for concrete (GB/T25177-2010), recycled fine aggregates for concrete and mortar (GB/T25176-2010) and recycled aggregate application technical rules (JGJ/T240-. However, the construction waste contains a large amount of components such as soil, wood, metal, plastic, etc. which cannot be used as recycled aggregate when it is crushed. Meanwhile, the density difference of concrete, brick, sand and stone and residue soil in the construction waste makes it difficult to prepare recycled aggregate meeting the above standards, and high value-added utilization cannot be realized.
In view of this, how to overcome the above-mentioned defects of construction waste treatment and produce various uses of recycled aggregate meeting the standard requirements becomes a problem to be solved urgently in the industry.
The present disclosure proposes a construction waste treatment process that solves the above-mentioned problems.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a construction waste recycling process, including the following steps:
step S1, primary crushing: conveying the construction waste into a crusher A for crushing;
step S2, magnetic separation: removing metal impurities in the construction waste by passing the construction waste after the primary crushing through a magnetic separator;
step S3, washing and floating: sending the construction waste subjected to magnetic separation into a washing flotation machine, and removing plastics, wood, waste paper and soil in the construction waste;
step S4, air separation: conveying the washed and floated building garbage into an air separator to remove plastic, wood and waste paper in the building garbage;
step S5, primary screening: conveying the construction waste subjected to air separation into a circular vibrating screen A, and screening the construction waste into first construction waste, second construction waste and third construction waste, wherein the particle size of the first construction waste is larger than that of the second construction waste, and the particle size of the second construction waste is larger than that of the third construction waste;
step S6, secondary crushing: feeding the second construction waste into a crusher B for crushing;
step S7, drying: sending the second construction waste after the second-stage crushing into a dryer for drying;
step S8, secondary screening: feeding the dried second construction waste into a circular vibrating screen B, and screening the second construction waste into fourth construction waste, fifth construction waste and first fine aggregate, wherein the particle size of the fourth construction waste is larger than that of the fifth construction waste, and the particle size of the fifth construction waste is larger than that of the first fine aggregate;
step S9, aggregate shaping: conveying the fifth construction waste separated by the secondary screening into an aggregate shaping machine for aggregate shaping;
step S10, three-stage screening: and conveying the fifth construction waste after the aggregate is shaped into a circular vibrating screen C, and screening the fifth construction waste into primary aggregate, secondary aggregate, tertiary aggregate and second fine aggregate, wherein the particle size of the tertiary aggregate is larger than that of the secondary aggregate, the particle size of the secondary aggregate is larger than that of the primary aggregate, and the particle size of the primary aggregate is larger than that of the second fine aggregate.
Preferably, the crusher a in step S1 is a jaw crusher and the crusher B in step S6 is a cone crusher.
Preferably, the first construction waste in the step S5 is sent into the magnetic separator in the step S2 until all the first construction waste is crushed and passes through the circular vibrating screen a.
Preferably, the third construction waste in the step S5 is sent into the aggregate shaping machine, the third construction waste meeting the requirement of the particle size is accurately screened out and directly sent into the aggregate shaping machine, so that the efficiency of secondary crushing is effectively improved, the loss of the aggregate is reduced, the production efficiency is improved, and the output ratio is increased.
Preferably, the fourth construction waste in the step S8 is fed into the crusher B in the step S6 until all the fourth construction waste is crushed and passes through the circular vibrating screen B.
Preferably, in the step S5, the particle size of the first construction waste is greater than 60mm, the particle size of the second construction waste is 20-60 mm, and the particle size of the third construction waste is less than 20 mm.
Preferably, in the step S8, the particle size of the fourth construction waste is greater than 40mm, the particle size of the fifth construction waste is 5-40 mm, and the particle size of the first fine aggregate is less than 5 mm.
Preferably, in the step S10, the primary aggregate has a particle size of 5-15 mm, the secondary aggregate has a particle size of 15-25 mm, the tertiary aggregate has a particle size of 25-40 mm, and the second fine aggregate has a particle size of less than 5 mm.
Preferably, the dryer in step S7 is a hot air dryer, and the operating temperature of the dryer is 300-500 ℃.
Preferably, the operating temperature of the dryer is 400 ℃.
The beneficial effects of this disclosure are:
(1) by the construction waste treatment process disclosed by the disclosure, the construction waste is treated into the recyclable aggregate, the quality of the aggregate is improved, the efficient recycling of resources is realized, the environment pollution caused by landfill of the construction waste is avoided, and the primary aggregate, the secondary aggregate, the tertiary aggregate, the first fine aggregate and the second fine aggregate obtained by recycling can be used for producing recycled infrastructure materials, recycled bricks and the like.
(2) Metal impurities in the construction waste are removed through a magnetic separator, so that the purity of the aggregate is improved;
(3) plastics, wood, waste paper and soil in the construction waste are removed through the water washing flotation machine and the air separation machine, double impurity removal is achieved, the removal effect is better, and the purity of the aggregate is further improved;
(4) the dryer can heat the construction waste to about 300 ℃ while playing a drying role, and can perform high-temperature activation, the cement part is easier to dehydrate and weaken than concrete, cement mortar on the construction waste can be removed more thoroughly, and the quality of aggregate is improved;
(5) through two-stage crushing, the aggregate is molded step by step, cracks on the surface of the aggregate are reduced, and finally, the uniformity of the aggregate is effectively improved through the aggregate shaping machine, and the quality of the aggregate is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a flow chart of the construction waste treatment process of example 1.
Detailed Description
The present disclosure will be described in further detail below with reference to embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
The embodiment provides a construction waste recycling process, which comprises the following steps:
step S1, primary crushing: the construction waste is sent into a crusher A for crushing, wherein in the embodiment, the crusher A is a jaw crusher;
step S2, magnetic separation: removing metal impurities in the construction waste by passing the construction waste after the primary crushing through a magnetic separator;
step S3, washing and floating: sending the construction waste subjected to magnetic separation into a washing flotation machine, and removing floating impurities and soil such as plastics, wood, waste paper and the like in the construction waste;
the water washing flotation machine is the prior art, and the working principle is as follows: building rubbish passes through in the rivers of washing flotation device because the quality of impurity such as partly plastics, timber, waste paper is lighter, can float under the effect of water force, reuse scraper blade with the impurity of floating strike off can, and rivers can wash away the earth on the building rubbish.
Step S4, air separation: conveying the washed and floated construction waste into a winnowing machine to remove light impurities such as plastics, wood, waste paper and the like in the construction waste;
step S5, primary screening: conveying the construction waste subjected to air separation into a circular vibrating screen A, and screening the construction waste into first construction waste, second construction waste and third construction waste, wherein the particle size of the first construction waste is larger than that of the second construction waste, the particle size of the second construction waste is larger than that of the third construction waste, the particle size of the first construction waste is larger than 60mm, the particle size of the second construction waste is 20-60 mm, and the particle size of the third construction waste is smaller than 20 mm;
the first construction waste is sent into the magnetic separator in the step S2 until all the first construction waste is crushed and passes through the circular vibrating screen A, the third construction waste meeting the particle size requirement is accurately screened out and directly sent into the aggregate shaping machine without secondary crushing and subsequent processes;
step S6, secondary crushing: feeding the second construction waste into a crusher B for crushing, wherein the crusher B is a cone crusher in the embodiment;
step S7, drying: the second construction waste after the second-stage crushing is sent into a dryer for drying, in the embodiment, the dryer is a hot air type dryer, the working temperature of the dryer is 400 ℃, the dryer can heat the construction waste for high-temperature activation while playing a drying role, the cement part is easier to dehydrate and weaken than concrete, cement mortar on the construction waste can be thoroughly removed, and the quality of aggregate is improved;
step S8, secondary screening: feeding the dried second construction waste into a circular vibrating screen B, and screening the second construction waste into fourth construction waste, fifth construction waste and first fine aggregate, wherein the particle size of the fourth construction waste is larger than that of the fifth construction waste, the particle size of the fifth construction waste is larger than that of the first fine aggregate, the particle size of the fourth construction waste is larger than 40mm, the particle size of the fifth construction waste is 5-40 mm, and the particle size of the first fine aggregate is smaller than 5 mm;
feeding the fourth construction waste into a crusher B until all the fourth construction waste is crushed and passes through a circular vibrating screen B;
step S9, aggregate shaping: conveying the fifth construction waste separated by the secondary screening into an aggregate shaping machine for aggregate shaping;
step S10, three-stage screening: and feeding the fifth construction waste after the aggregate is shaped into a circular vibrating screen C, and screening the fifth construction waste into primary aggregate, secondary aggregate, tertiary aggregate and second fine aggregate, wherein the particle size of the tertiary aggregate is larger than that of the secondary aggregate, the particle size of the secondary aggregate is larger than that of the primary aggregate, the particle size of the primary aggregate is larger than that of the second fine aggregate, the particle size of the primary aggregate is 5-15 mm, the particle size of the secondary aggregate is 15-25 mm, the particle size of the tertiary aggregate is 25-40 mm, and the particle size of the second fine aggregate is smaller than 5 mm.
Example 2
This embodiment is different from embodiment 1 in that the operating temperature of the dryer is 300 c.
Example 3
This embodiment is different from embodiment 1 in that the operating temperature of the dryer is 500 c.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A construction waste recycling process is characterized by comprising the following steps:
step S1, primary crushing: conveying the construction waste into a crusher A for crushing;
step S2, magnetic separation: removing metal impurities in the construction waste by passing the construction waste after the primary crushing through a magnetic separator;
step S3, washing and floating: sending the construction waste subjected to magnetic separation into a washing flotation machine, and removing plastics, wood, waste paper and soil in the construction waste;
step S4, air separation: conveying the washed and floated building garbage into an air separator to remove plastic, wood and waste paper in the building garbage;
step S5, primary screening: conveying the construction waste subjected to air separation into a circular vibrating screen A, and screening the construction waste into first construction waste, second construction waste and third construction waste, wherein the particle size of the first construction waste is larger than that of the second construction waste, and the particle size of the second construction waste is larger than that of the third construction waste;
step S6, secondary crushing: feeding the second construction waste into a crusher B for crushing;
step S7, drying: sending the second construction waste after the second-stage crushing into a dryer for drying;
step S8, secondary screening: feeding the dried second construction waste into a circular vibrating screen B, and screening the second construction waste into fourth construction waste, fifth construction waste and first fine aggregate, wherein the particle size of the fourth construction waste is larger than that of the fifth construction waste, and the particle size of the fifth construction waste is larger than that of the first fine aggregate;
step S9, aggregate shaping: conveying the fifth construction waste separated by the secondary screening into an aggregate shaping machine for aggregate shaping;
step S10, three-stage screening: and conveying the fifth construction waste after the aggregate is shaped into a circular vibrating screen C, and screening the fifth construction waste into primary aggregate, secondary aggregate, tertiary aggregate and second fine aggregate, wherein the particle size of the tertiary aggregate is larger than that of the secondary aggregate, the particle size of the secondary aggregate is larger than that of the primary aggregate, and the particle size of the primary aggregate is larger than that of the second fine aggregate.
2. The recycling process of construction waste according to claim 1, wherein the crusher A in step S1 is a jaw crusher, and the crusher B in step S6 is a cone crusher.
3. The construction waste recycling process of claim 1, wherein the first construction waste of the step S5 is sent to the magnetic separator of the step S2 until all the first construction waste is crushed and passed through the circular vibrating screen A.
4. The construction waste recycling process according to claim 1, wherein the third construction waste in the step S5 is sent to an aggregate shaping machine.
5. The construction waste recycling process according to claim 1, wherein the fourth construction waste of step S8 is fed into the crusher B of step S6 until all the fourth construction waste is crushed and passed through the circular vibrating screen B.
6. The recycling process of construction waste according to claim 1, wherein the particle size of the first construction waste in step S5 is larger than 60mm, the particle size of the second construction waste is 20-60 mm, and the particle size of the third construction waste is smaller than 20 mm.
7. The construction waste recycling process according to claim 6, wherein in the step S8, the particle size of the fourth construction waste is larger than 40mm, the particle size of the fifth construction waste is 5-40 mm, and the particle size of the first fine aggregate is smaller than 5 mm.
8. The construction waste recycling process according to claim 7, wherein in the step S10, the primary aggregate has a particle size of 5-15 mm, the secondary aggregate has a particle size of 15-25 mm, the tertiary aggregate has a particle size of 25-40 mm, and the secondary fine aggregate has a particle size of less than 5 mm.
9. The recycling process of construction waste according to claim 1, wherein the dryer in step S7 is a hot air type dryer, and the working temperature of the dryer is 300-500 ℃.
10. The construction waste recycling process according to claim 9, wherein the operating temperature of the dryer is 400 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298255.6A CN111482256A (en) | 2020-04-16 | 2020-04-16 | Construction waste recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298255.6A CN111482256A (en) | 2020-04-16 | 2020-04-16 | Construction waste recycling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111482256A true CN111482256A (en) | 2020-08-04 |
Family
ID=71791687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010298255.6A Pending CN111482256A (en) | 2020-04-16 | 2020-04-16 | Construction waste recycling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111482256A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090939A (en) * | 2020-09-22 | 2020-12-18 | 苏州金螳螂园林绿化景观有限公司 | Construction method and classification treatment system for construction waste road |
| CN112354669A (en) * | 2020-11-23 | 2021-02-12 | 上海建工建材科技集团股份有限公司 | Efficient environment-friendly building waste concrete treatment process |
| CN113083411A (en) * | 2021-03-30 | 2021-07-09 | 东北林业大学 | Movable recycled aggregate production device |
| CN113860778A (en) * | 2021-11-03 | 2021-12-31 | 苏州和锦科技有限公司 | Preparation process for recycling concrete building material by utilizing construction waste |
| CN114345892A (en) * | 2021-12-24 | 2022-04-15 | 苏州嘉诺智能装备有限公司 | Garbage classification processing system and method |
| CN115536341A (en) * | 2022-10-26 | 2022-12-30 | 中建铁路投资建设集团有限公司 | Concrete for heating and shaping full-tunnel hole slag aggregate and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3817459A (en) * | 1973-01-02 | 1974-06-18 | D Keller | Device and process for reclaiming used wood |
| CN104671685A (en) * | 2015-02-02 | 2015-06-03 | 深圳市华威环保建材有限公司 | Production method of recycled aggregates of building wastes |
| CN106830728A (en) * | 2016-12-30 | 2017-06-13 | 中建西部建设西南有限公司 | One kind building solid waste best quality handling process |
| CN108994040A (en) * | 2018-06-23 | 2018-12-14 | 温州市申宏建设有限公司 | Build solid waste best quality treatment process |
| CN109678378A (en) * | 2019-03-08 | 2019-04-26 | 泗县惠赐建材有限公司 | A kind of application of building waste treatment process and gained recycled aggregate |
| CN209005920U (en) * | 2018-08-14 | 2019-06-21 | 襄阳市市政工程总公司 | A kind of cracking and sorting processing system of building waste |
-
2020
- 2020-04-16 CN CN202010298255.6A patent/CN111482256A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3817459A (en) * | 1973-01-02 | 1974-06-18 | D Keller | Device and process for reclaiming used wood |
| CN104671685A (en) * | 2015-02-02 | 2015-06-03 | 深圳市华威环保建材有限公司 | Production method of recycled aggregates of building wastes |
| CN106830728A (en) * | 2016-12-30 | 2017-06-13 | 中建西部建设西南有限公司 | One kind building solid waste best quality handling process |
| CN108994040A (en) * | 2018-06-23 | 2018-12-14 | 温州市申宏建设有限公司 | Build solid waste best quality treatment process |
| CN209005920U (en) * | 2018-08-14 | 2019-06-21 | 襄阳市市政工程总公司 | A kind of cracking and sorting processing system of building waste |
| CN109678378A (en) * | 2019-03-08 | 2019-04-26 | 泗县惠赐建材有限公司 | A kind of application of building waste treatment process and gained recycled aggregate |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090939A (en) * | 2020-09-22 | 2020-12-18 | 苏州金螳螂园林绿化景观有限公司 | Construction method and classification treatment system for construction waste road |
| CN112354669A (en) * | 2020-11-23 | 2021-02-12 | 上海建工建材科技集团股份有限公司 | Efficient environment-friendly building waste concrete treatment process |
| CN113083411A (en) * | 2021-03-30 | 2021-07-09 | 东北林业大学 | Movable recycled aggregate production device |
| CN113083411B (en) * | 2021-03-30 | 2023-01-31 | 东北林业大学 | Movable recycled aggregate production device |
| CN113860778A (en) * | 2021-11-03 | 2021-12-31 | 苏州和锦科技有限公司 | Preparation process for recycling concrete building material by utilizing construction waste |
| CN114345892A (en) * | 2021-12-24 | 2022-04-15 | 苏州嘉诺智能装备有限公司 | Garbage classification processing system and method |
| CN115536341A (en) * | 2022-10-26 | 2022-12-30 | 中建铁路投资建设集团有限公司 | Concrete for heating and shaping full-tunnel hole slag aggregate and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111482256A (en) | Construction waste recycling process | |
| CN111320407A (en) | Process for preparing recycled building material from building garbage | |
| CN112828002A (en) | Construction waste recycling method | |
| CN101560073A (en) | Method for recycling waste concrete | |
| CN104529333A (en) | Waste sintered brick recycled C30 concrete and preparation method thereof | |
| CN110976478A (en) | Recycling treatment process for demolition and decoration wastes | |
| CN107540254A (en) | A kind of method to building waste integrated treatment | |
| CN212237647U (en) | Construction waste treatment system | |
| CN111747668A (en) | Preparation process and application of recycled concrete aggregate | |
| CN111763026A (en) | Preparation process of recycled concrete aggregate | |
| CN106045412A (en) | Ecological concrete | |
| CN104556905A (en) | Waste sintered brick recycled C25 concrete and preparation method thereof | |
| CN109437926A (en) | A kind of preparation method and application of foamed ceramic raw material and Gao Bai ceramic raw material | |
| CN112479667A (en) | Multielement solid waste concrete building block and preparation method thereof | |
| CN112500075A (en) | Dry and hard concrete for bottom slag of household garbage incinerator and preparation method thereof | |
| CN103848584A (en) | Co-production process for recycling micropowder and fine sands from construction wastes | |
| CN108689659A (en) | A kind of construction refuse regenerated mixture of cement stabilizing and preparation method thereof | |
| CN102745957B (en) | Brick-making technological method with construction waste as raw material | |
| CN103183489B (en) | A kind of Environmentally-friegreen green concrete | |
| CN111847949A (en) | Classification method for waste concrete block treatment | |
| CN207592419U (en) | A kind of building waste specification processing system | |
| CN110976078A (en) | Resourceful treatment process for decoration waste | |
| CN103785668A (en) | Method for treating papermaking waste residues | |
| CN110835241A (en) | Building waste treatment method and preparation process for producing autoclaved fly ash bricks by using building waste | |
| CN102659358B (en) | Baffle brick with ultra low shrinkage and manufacturing method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200804 |