CN111018428A - Production process for preparing road baking-free bricks by using waste circuit boards - Google Patents
Production process for preparing road baking-free bricks by using waste circuit boards Download PDFInfo
- Publication number
- CN111018428A CN111018428A CN201911374391.2A CN201911374391A CN111018428A CN 111018428 A CN111018428 A CN 111018428A CN 201911374391 A CN201911374391 A CN 201911374391A CN 111018428 A CN111018428 A CN 111018428A
- Authority
- CN
- China
- Prior art keywords
- waste circuit
- baking
- production process
- brick
- circuit board
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- 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.)
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a production process for preparing a road baking-free brick by using waste circuit boards, which fully separates metal components and non-metal components in waste circuit board powder, and prepares the road baking-free brick by using the waste circuit board non-metal powder as a raw material.
Description
Technical Field
The invention relates to the technical field of renewable resource recycling technology and building materials, in particular to a production process for preparing a road baking-free brick by using waste circuit boards.
Background
With the increasing updating speed of electronic products, the waste quantity of printed circuit boards, which are the main components of electronic garbage, is also becoming more and more huge. The pollution of the waste circuit board to the environment also draws attention of all countries. The waste circuit board contains heavy metals such as lead, mercury and hexavalent chromium, and toxic chemical substances such as polybrominated biphenyls and polybrominated diphenyl ethers as flame retardant components, and the substances enter the natural environment to cause huge pollution to underground water and soil, thereby bringing great harm to the life and health of people. The waste circuit board contains nearly 20 kinds of nonferrous metals and rare metals, has high recovery value and economic value, and is a real mineral deposit waiting for mining.
In the prior art, the technology for recovering metal powder after crushing waste circuit boards is mature, the remaining non-metal powder mainly containing epoxy resin is difficult to recycle, and the reasonable treatment of the non-metal powder needs huge economic cost and environmental cost.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a production process for preparing a road baking-free brick by using waste circuit boards.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: a production process for preparing a road baking-free brick by using waste circuit boards is characterized by comprising the following steps: the method comprises the following steps:
A. carrying out primary crushing, secondary crushing and tertiary crushing on the waste circuit board after electronic elements are separated by preprocessing, and sequentially carrying out air flow separation, pulse dust removal and electrostatic separation on the waste circuit board powder to obtain waste circuit board nonmetal powder with the particle size of less than 0.6 mm;
B. non-metal powder of the waste circuit board, cement, sand, broken stone and water are mixed according to the proportion of 15-30: 15-22: 5-15: 5-15: 6-12, and fully mixing;
C. and (3) feeding the mixed material into a hydraulic brick making machine for compression molding, and then feeding the mixed material into a curing kiln for curing for 24 hours at normal temperature and normal pressure to obtain the road baking-free brick.
Preferably, the frame material, the copper-clad plate and the tin plate are additionally added during the secondary crushing in the step A.
Preferably, the sand has a particle size of no greater than 2 mm.
Preferably, the crushed stone has a particle size of not more than 2 cm.
Preferably, the sum of the mass of the sand and the crushed stones is not less than 20 percent of the total mass of the mixed materials.
Due to the application of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the method has the advantages that metal components and non-metal components in the waste circuit board powder are fully separated, the road baking-free brick is prepared by taking the waste circuit board non-metal powder as a raw material, the process flow is simple, the productivity efficiency is high, the energy consumption is low, the production cost is low, the prepared road baking-free brick is high in strength and free of pollution, the national building material standard is met, the baked brick is effectively replaced, the problem of land resource waste caused by using a large amount of baked bricks is solved, the environment is protected, the pollution is prevented, the cyclic utilization of resources is facilitated, a large amount of energy is saved, and the sustainable development of the economic society is promoted.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples:
the invention provides a production process for preparing a road baking-free brick by using waste circuit boards, which comprises the following steps:
A. the method comprises the following steps of pretreating and separating the waste circuit board to obtain electronic components, then carrying out primary crushing, secondary crushing and tertiary crushing, and sequentially carrying out air flow separation, pulse dust removal and electrostatic separation on the waste circuit board powder to obtain waste circuit board nonmetal powder with the particle size of less than 0.6mm, wherein a frame material, a copper-clad plate and a tin plate are additionally added during secondary crushing;
B. non-metal powder of the waste circuit board, cement, sand, broken stone and water are mixed according to the proportion of 15-30: 15-22: 5-15: 5-15: 6-12, wherein the grain diameter of the sand is not more than 2mm, the grain diameter of the broken stone is not more than 2cm, and the sum of the mass of the sand and the broken stone is not less than 20% of the total mass of the mixed materials;
C. and (3) feeding the mixed material into a hydraulic brick making machine for compression molding, and then feeding the mixed material into a curing kiln for curing for 24 hours at normal temperature and normal pressure to obtain the road baking-free brick.
In the step A, the waste circuit board is subjected to primary crushing by a primary crusher in sequence, then the waste circuit board, the added frame material, the copper-clad plate and the tin plate are subjected to two-degree crushing by a secondary crusher and a tertiary crusher to obtain powder with the particle size of less than 0.6mm, the waste circuit board powder is subjected to sorting by an airflow sorting machine to obtain most metal powder (copper powder is taken as the main part), the remaining nonmetal powder containing the trace metal powder is subjected to sorting by a pulse dust collector and an electrostatic sorting machine to obtain the trace metal powder (copper powder is taken as the main part), and finally the waste circuit board nonmetal powder with the epoxy resin as the main component is.
Example 1:
non-metal powder of the waste circuit board, cement, sand, broken stone and water are mixed according to the proportion of 25: 20: 10: 10: 10, then sending the mixture into a 1500KN hydraulic brick making machine for compression molding, and then sending into a curing kiln for curing for 24 hours at normal temperature and normal pressure to obtain the road baking-free brick.
Example 2:
mixing waste circuit board nonmetal powder, cement, sand, broken stone and water according to the proportion of 30: 22: 15: 5: 8, then sending the mixture into a 1500KN hydraulic brick making machine for compression molding, and then sending into a curing kiln for curing for 24 hours at normal temperature and normal pressure to obtain the road baking-free brick.
Example 3:
non-metal powder of the waste circuit board, cement, sand, broken stone and water are mixed according to the proportion of 20: 15: 15: 15: 12, feeding the mixture into a 1500KN hydraulic brick making machine for compression molding, and feeding the mixture into a curing kiln for curing at normal temperature and normal pressure for 24 hours to obtain the road baking-free brick.
The performance parameters such as the compressive strength, the breaking strength and the like of the road baking-free brick prepared by the embodiments are detected, and the prepared road baking-free brick is compact in structure and excellent in performance and meets the national building material standards of JC 899-2002-concrete curb stone and GB 28635-2012-concrete pavement brick.
The innovation of the invention is as follows: the method has the advantages that metal components and non-metal components in the waste circuit board powder are fully separated, the road baking-free brick is prepared by taking the waste circuit board non-metal powder as a raw material, the process flow is simple, the productivity efficiency is high, the energy consumption is low, the production cost is low, the prepared road baking-free brick is high in strength and free of pollution, the national building material standard is met, the baked brick is effectively replaced, the problem of land resource waste caused by using a large amount of baked bricks is solved, the environment is protected, the pollution is prevented, the cyclic utilization of resources is facilitated, a large amount of energy is saved, and the sustainable development of the economic society is promoted.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (5)
1. A production process for preparing a road baking-free brick by using waste circuit boards is characterized by comprising the following steps: the method comprises the following steps:
A. carrying out primary crushing, secondary crushing and tertiary crushing on the waste circuit board after electronic elements are separated by preprocessing, and sequentially carrying out air flow separation, pulse dust removal and electrostatic separation on the waste circuit board powder to obtain waste circuit board nonmetal powder with the particle size of less than 0.6 mm;
B. non-metal powder of the waste circuit board, cement, sand, broken stone and water are mixed according to the proportion of 15-30: 15-22: 5-15: 5-15: 6-12, and fully mixing;
C. and (3) feeding the mixed material into a hydraulic brick making machine for compression molding, and then feeding the mixed material into a curing kiln for curing for 24 hours at normal temperature and normal pressure to obtain the road baking-free brick.
2. The production process for preparing the baking-free road brick by using the waste circuit boards as claimed in claim 1, is characterized in that: and B, adding a frame material, a copper-clad plate and a tin plate during the secondary crushing in the step A.
3. The production process for preparing the baking-free road brick by using the waste circuit boards as claimed in claim 1, is characterized in that: the sand particle size is not more than 2 mm.
4. The production process for preparing the baking-free road brick by using the waste circuit boards as claimed in claim 1, is characterized in that: the particle size of the crushed stone is not more than 2 cm.
5. The production process for preparing the baking-free road brick by using the waste circuit boards as claimed in claim 1, is characterized in that: the sum of the mass of the sand and the crushed stones is not less than 20 percent of the total mass of the mixed materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374391.2A CN111018428A (en) | 2019-12-27 | 2019-12-27 | Production process for preparing road baking-free bricks by using waste circuit boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374391.2A CN111018428A (en) | 2019-12-27 | 2019-12-27 | Production process for preparing road baking-free bricks by using waste circuit boards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111018428A true CN111018428A (en) | 2020-04-17 |
Family
ID=70196009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911374391.2A Pending CN111018428A (en) | 2019-12-27 | 2019-12-27 | Production process for preparing road baking-free bricks by using waste circuit boards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111018428A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716588A (en) * | 2009-12-31 | 2010-06-02 | 湖南万容科技有限公司 | Waste circuit board recovery system |
| CN103951338A (en) * | 2014-04-01 | 2014-07-30 | 清华大学 | Printed circuit board scrap nonmetal powder baking-free brick and making method thereof |
| CN104030628A (en) * | 2014-06-25 | 2014-09-10 | 江苏融源再生资源科技有限公司 | Method for preparing concrete kerbstones and paving bricks from nonmetal powder of waste circuit boards |
| WO2015006987A1 (en) * | 2013-07-19 | 2015-01-22 | Su Taiyuan | Multi-effect powder composition and manufacturing method therefor |
-
2019
- 2019-12-27 CN CN201911374391.2A patent/CN111018428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716588A (en) * | 2009-12-31 | 2010-06-02 | 湖南万容科技有限公司 | Waste circuit board recovery system |
| WO2015006987A1 (en) * | 2013-07-19 | 2015-01-22 | Su Taiyuan | Multi-effect powder composition and manufacturing method therefor |
| CN103951338A (en) * | 2014-04-01 | 2014-07-30 | 清华大学 | Printed circuit board scrap nonmetal powder baking-free brick and making method thereof |
| CN104030628A (en) * | 2014-06-25 | 2014-09-10 | 江苏融源再生资源科技有限公司 | Method for preparing concrete kerbstones and paving bricks from nonmetal powder of waste circuit boards |
Non-Patent Citations (1)
| Title |
|---|
| 张泾生: "《现代选矿技术手册 第8册 环境保护与资源循环》", 31 January 2014, 冶金工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200417 |