CN1857782A - Waste concrete component separating method - Google Patents
Waste concrete component separating method Download PDFInfo
- Publication number
- CN1857782A CN1857782A CN 200610019242 CN200610019242A CN1857782A CN 1857782 A CN1857782 A CN 1857782A CN 200610019242 CN200610019242 CN 200610019242 CN 200610019242 A CN200610019242 A CN 200610019242A CN 1857782 A CN1857782 A CN 1857782A
- Authority
- CN
- China
- Prior art keywords
- mill
- wind
- mortar
- cement stone
- aggregate
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention belongs to the field of building material, and is especially waste concrete component separating method. The waste concrete component separating method includes the following steps: heating, pulverizing or other steps to expand and increase micro cracks inside concrete, extruding or adding friction force and sieving to separate coarse aggregate and mortar; and pulverizing mortar to separate quartzite and cement of different milling property and density in mill with pneumatic action. The said method can separate coarse aggregate, fine aggregate and cement in waste concrete in high efficiency and high quality.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of method that coarse aggregate, fine aggregate and cement stone component in the discarded concrete are separated from each other.
Background technology
In waste and old concrete structural demolition process, and in the concrete production process, produce a large amount of discarded concretes.Expansion and a large amount of old concrete structure with the capital construction scale arrives Years Of Service at present, and the generation of discarded concrete increases with surprising rapidity.Processing method for discarded concrete generally is to be used as building waste to throw aside, but such processing method exists tangible drawback, the one, and the landfill of discarded concrete is stacked the land resource that takies a large amount of preciousnesses; The 2nd, easily environment is caused secondary pollution; Simultaneously, discarded concrete exists the value of regeneration, it is thrown aside in fact caused waste to resource.Under the deficient day by day severe situation of the concrete raw material of preparation, each component separation is recycled and is significant to discarded concrete.
For the still unhardened discarded concrete that produces in the concrete production process, existing at present correlation technique and equipment clean it, sand, stone more fully can be separated and be recycled.The recycling of people to the sclerosis discarded concrete that produces in waste and old concrete structural demolition and the production process also arranged both at home and abroad, its way generally is with discarded maturing fragmentation, rely on impact, frictional force in the shattering process to make discarded concrete become fritter, and mortar and coarse aggregate are separated from each other to a certain extent, then the coarse aggregate of separating is used to prepare regenerated aggregate concrete.But, there are some problems in this separation method, the one, be difficult to more fully separate between mortar and the coarse aggregate, and the coarse aggregate that has adhered to mortar when preparation regenerated coarse aggregate concrete since the big concrete that makes preparation of the water imbibition of mortar newly to mix service behaviour relatively poor, simultaneously in broken apart process often between the mortar of the mortar inside that adheres to, adhesion and coarse aggregate the interface produce a large amount of micro-cracks, make the regenerated aggregate concrete physical and mechanical property of preparation relatively poor, strength grade is low; The 2nd, the mortar of separating is often thrown aside as rubbish, be difficult to will be closely the fine aggregate of parcel and cement stone be separated from each other out respectively and be used.
Summary of the invention
At the problems referred to above, the object of the present invention is to provide a kind of method that coarse aggregate, fine aggregate and cement stone component in the discarded concrete are separated from each other, this method separative efficiency height, quality height.
To achieve these goals, technical scheme of the present invention is: the method that a kind of waste concrete component separates is characterized in that it comprises the steps:
1), the bulk discarded concrete that will remove impurity such as reinforcing bar, wooden unit is broken into the fritter of 10cm-30cm particle size with jaw crusher, and then become the 3cm-10cm size particles with bevel-type eccentrically weighted shaft crusher in crushing, to be difficult to irony impurity such as manual sorting's tiny reinforcing bar and iron nail with the electromagnetism magnetic separator de-ironing and remove, material particles;
2), material particles is heated to 250 ℃-350 ℃ with vertical oil burner, make it be chilled to normal temperature with wind-force again;
3), cooled material is sent in the middle of the ball mill, between the material particles, between material particles and the steel ball mutually under collision, the rubbing action, make to adhere to mortar and coarse aggregate is separated from each other, material time of staying in ball mill is 3-10min; Material goes out the mill back and with the 5mm vibratory sieve mortar particulate and the coarse aggregate that separates is separated from each other out;
4), the mortar particulate of separating is sent into wind again sweep and carry out grinding in the tube mill, the time of staying is 5-15min in wind is swept tube mill; Mortar particulate quartz sand fine aggregate and cement stone under abrasive action are separated from each other, and cement stone ground to form fine powder, under the wind-force effect, cement stone fine powder is discharged with the wind, collect with bag filter, quartz sand (being fine aggregate) is then discharged from the mill tail, realizes the separation between fine aggregate and the cement stone.
Principle of the present invention: at first, utilize the difference of aggregate and heat expansion coefficients of set cements, make in the middle of the discarded concrete particle between the aggregate and cement stone because thermal stress is concentrated and produced micro-crack at the interface weak area by heat treated, and make existing micro-crack extension; Secondly, the cyclic fatigue load that utilizes grinding to produce makes the further unstability development of micro-crack between aggregate and cement stone, and aggregate and cement stone are broken away from mutually, by sieving separating of realization coarse aggregate and mortar; At last, utilize the significant difference of fine aggregate and cement stone grindability, and the difference of both diameter of particle and density during combined grinding, adopt the mill inner ventilation technology, realize separating of fine aggregate and cement stone according to winnowing powder principle.
The invention provides the waste concrete component separation method that a kind of fragmentation, Low Temperature Heat Treatment, grinding fragmentation, screening, secondary grinding and winnowing powder combine; Beneficial effect of the present invention is: separative efficiency height, quality height.
The present invention has following characteristics:
1, the waste concrete component separation method that fragmentation, Low Temperature Heat Treatment, grinding and winnowing powder combine is proposed first.
2, this method has realized three kinds of topmost components in the discarded concrete: coarse aggregate, fine aggregate and cement stone high efficiency, high-quality disconnected from each other, and for this three kinds of components high added value regeneration separately provides necessary condition.
Description of drawings
Fig. 1 is a process chart of the present invention
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
As shown in Figure 1, certain cement concrete road is removed rebuilding, the discarded concrete that to produce a large amount of former strength grades be C30, the discarded concrete bulk is removed reinforcing bar, be transported to discarded concrete process for producing line after being broken into the fritter of 30cm particle size with jaw crusher at the scene behind the impurity such as earth, the discarded concrete fritter is broken into the particle of 7cm particle size with the eccentric disintegrating machine of bevel-type rotating shaft, with the electromagnetism magnetic separator de-ironing tiny irony impurity such as iron wire are removed, be heated to 250 ℃ with the minitype vertical type oil burner again, the quick cooled material of wind-force is sent in the middle of Φ 1200mm * 2400mm size small grinder then, material is time of staying 3min in mill, square hole screen with the 5mm aperture after material goes out to grind sieves processing, the realization coarse aggregate separates with the mortar particulate, the wind of again the mortar particulate of separating being sent into Φ 1200mm * 4500mm size is swept and is carried out grinding in the tube mill and handle, material is time of staying 10min in mill, levigate cement stone fine powder goes out mill with mill inner ventilation, collects with bag filter; And the most of particle of the quartz sand of difficult mill is bigger, is difficult to be suspended in the mill discharge with the wind in the air, can only discharge from the mill tail with the rotation of grinding machine, realizes being separated from each other of quartz sand fine aggregate and cement stone dust body.
Embodiment 2:
As shown in Figure 1, certain cement concrete bridge is removed, the discarded concrete that to produce a large amount of former strength grades be C50, the discarded concrete bulk is removed reinforcing bar, be transported to discarded concrete process for producing line after being broken into the fritter of 20cm particle size with jaw crusher at the scene behind the impurity such as wooden unit, the discarded concrete fritter is broken into the particle of 4cm particle size with the eccentric disintegrating machine of bevel-type rotating shaft, with the electromagnetism magnetic separator de-ironing tiny irony impurity such as iron wire are removed, be heated to 300 ℃ with the minitype vertical type oil burner again, the quick cooled material of wind-force is sent in the middle of Φ 1200mm * 2400mm size small grinder then, material is time of staying 5min in mill, square hole screen with the 5mm aperture after material goes out to grind sieves processing, the realization coarse aggregate separates with the mortar particulate, carrying out grinding in the mortar particulate of separating being sent into Φ 1200mm * 4500mm size again air swept mill handles, material is time of staying 12min in mill, levigate cement stone fine powder goes out mill with mill inner ventilation, collects with bag filter; And the most of particle of the quartz sand of difficult mill is bigger, is difficult to be suspended in the mill discharge with the wind in the air, can only discharge from the mill tail with the rotation of grinding machine, realizes being separated from each other of quartz sand fine aggregate and cement stone dust body.
Embodiment 3:
The method that a kind of waste concrete component separates, it comprises the steps:
1), the bulk discarded concrete that will remove impurity such as reinforcing bar, wooden unit is broken into the fritter of 10cm particle size with jaw crusher, and then become the 3cm size particles with bevel-type eccentrically weighted shaft crusher in crushing, to be difficult to irony impurity such as manual sorting's tiny reinforcing bar and iron nail with the electromagnetism magnetic separator de-ironing and remove, material particles;
2), material particles is heated to 350 ℃ with vertical oil burner, make it be chilled to normal temperature with wind-force again;
3), cooled material is sent in the middle of the ball mill, between the material particles, between material particles and the steel ball mutually under collision, the rubbing action, make to adhere to mortar and coarse aggregate is separated from each other, material time of staying in ball mill is 10min; Material goes out the mill back and with the 5mm vibratory sieve mortar particulate and the coarse aggregate that separates is separated from each other out;
4), the mortar particulate of separating is sent into wind again sweep and carry out grinding in the tube mill, the time of staying is 15min in wind is swept tube mill; Mortar particulate quartz sand fine aggregate and cement stone under abrasive action are separated from each other, and cement stone is ground to form fine powder, under the wind-force effect, cement stone fine powder is discharged with the wind, collect with bag filter, quartz sand is then discharged from the mill tail, realizes the separation between fine aggregate and the cement stone.
Claims (2)
1. the method that waste concrete component separates is characterized in that it comprises the steps:
1), will remove bulk discarded concrete behind the impurity is broken into the 10cm-30cm particle size with jaw crusher fritter, and then become the 3cm-10cm size particles with bevel-type eccentrically weighted shaft crusher in crushing, remove irony impurity with the electromagnetism magnetic separator de-ironing, get material particles;
2), material particles is heated to 250 ℃-350 ℃ with vertical oil burner, make it be chilled to normal temperature with wind-force again;
3), cooled material is sent in the middle of the ball mill, between the material particles, between material particles and the steel ball mutually under collision, the rubbing action, make to adhere to mortar and coarse aggregate is separated from each other, material time of staying in ball mill is 3-10min; Material goes out the mill back and with the 5mm vibratory sieve mortar particulate and the coarse aggregate that separates is separated from each other out;
4), the mortar particulate of separating is sent into wind again sweep and carry out grinding in the tube mill, the time of staying is 5-15min in wind is swept tube mill; Mortar particulate quartz sand fine aggregate and cement stone under abrasive action are separated from each other, and cement stone is ground to form fine powder, under the wind-force effect, cement stone fine powder is discharged with the wind, collect with bag filter, quartz sand is then discharged from the mill tail, realizes the separation between fine aggregate and the cement stone.
2. the method that a kind of waste concrete component according to claim 1 separates, it is characterized in that: described ball mill is Φ 1200mm * 2400mm size small grinder; It is that the wind of Φ 1200mm * 4500mm size is swept tube mill that described wind is swept tube mill.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2006100192420A CN100398214C (en) | 2006-06-01 | 2006-06-01 | Waste concrete component separating method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2006100192420A CN100398214C (en) | 2006-06-01 | 2006-06-01 | Waste concrete component separating method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1857782A true CN1857782A (en) | 2006-11-08 |
CN100398214C CN100398214C (en) | 2008-07-02 |
Family
ID=37296770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2006100192420A Expired - Fee Related CN100398214C (en) | 2006-06-01 | 2006-06-01 | Waste concrete component separating method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN100398214C (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101537421B (en) * | 2009-04-13 | 2011-09-07 | 山东建筑大学 | Separation method of waste concrete and application of product powder of waste concrete |
CN102989747A (en) * | 2011-12-21 | 2013-03-27 | 何德裕 | Solid construction waste processing and treating system |
CN103272679A (en) * | 2013-05-14 | 2013-09-04 | 北京欣瑞天成节能工程技术有限公司 | Method for contouring refractory aggregate |
CN103351107A (en) * | 2013-05-30 | 2013-10-16 | 大连理工大学 | Method for low temperature separation of waste concrete |
WO2014110845A1 (en) * | 2013-01-17 | 2014-07-24 | 上海国砼环保设备有限公司 | Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof |
CN104446077A (en) * | 2014-11-14 | 2015-03-25 | 中联重科物料输送设备有限公司 | Separation method and separation system for waste concrete and rolling separator |
CN106216066A (en) * | 2016-08-04 | 2016-12-14 | 吉林市骅坊节能环保建材有限公司 | Construction refuse regenerated aggregate processes technique and device thereof |
CN106269160A (en) * | 2016-08-26 | 2017-01-04 | 孟玲 | A kind of powder processing system with deferrization functional |
CN108246428A (en) * | 2018-01-18 | 2018-07-06 | *** | The sandstone separation method and device of waste concrete |
CN109180042A (en) * | 2018-11-06 | 2019-01-11 | 西安建筑科技大学 | A kind of building discarded concrete high quality recycled aggregates recyclable device and method |
CN110523498A (en) * | 2019-09-05 | 2019-12-03 | 杭州杰维科技有限公司 | A kind of building bar and concrete separation equipment |
CN111318550A (en) * | 2020-03-25 | 2020-06-23 | 深圳绿景环保再生资源有限公司 | Method for preparing recycled aggregate by using construction waste |
CN112138752A (en) * | 2020-08-03 | 2020-12-29 | 平顶山学院 | Civil engineering construction waste treatment device |
CN112521035A (en) * | 2020-10-15 | 2021-03-19 | 西南科技大学 | Method for recycling waste concrete |
CN112645658A (en) * | 2020-12-29 | 2021-04-13 | 南通友力混凝土有限公司 | High-strength recycled concrete and production process thereof |
CN112934420A (en) * | 2019-10-12 | 2021-06-11 | 曾彩霞 | Gunny pulp biological fiber blasting crushing centrifuge and blasting method |
CN113831073A (en) * | 2021-09-27 | 2021-12-24 | 清华大学 | Building mortar regeneration and cyclic utilization method and system |
CN114341078A (en) * | 2019-09-02 | 2022-04-12 | 法孚斯弗克布公司 | Method for separating different components of demolished concrete for buildings |
CN114345473A (en) * | 2022-01-21 | 2022-04-15 | 宋江勇 | Method for preparing cement micro-material by using solid waste |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3016239B2 (en) * | 1992-03-24 | 2000-03-06 | 三菱マテリアル株式会社 | Recovery method of coarse aggregate from concrete waste |
CN1290630C (en) * | 2003-09-18 | 2006-12-20 | 黄浩庭 | Recovering method of waste concrete and use of recovered material |
KR100572091B1 (en) * | 2003-11-06 | 2006-04-17 | 인선이엔티 주식회사 | A apparatus for manufacturing a sand and stone using a construction waste matter |
TWI246945B (en) * | 2004-09-01 | 2006-01-11 | Jeng-Feng Jang | Concrete recycling process |
CN100335721C (en) * | 2005-07-05 | 2007-09-05 | 武汉理工大学 | Method for preparing regenerative gel material using waste concrete |
CN100391632C (en) * | 2005-07-05 | 2008-06-04 | 武汉理工大学 | Waste concrete regenerating and utilizing method |
-
2006
- 2006-06-01 CN CNB2006100192420A patent/CN100398214C/en not_active Expired - Fee Related
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101537421B (en) * | 2009-04-13 | 2011-09-07 | 山东建筑大学 | Separation method of waste concrete and application of product powder of waste concrete |
CN102989747A (en) * | 2011-12-21 | 2013-03-27 | 何德裕 | Solid construction waste processing and treating system |
CN102989747B (en) * | 2011-12-21 | 2014-09-24 | 何德裕 | Solid construction waste processing and treating system |
WO2014110845A1 (en) * | 2013-01-17 | 2014-07-24 | 上海国砼环保设备有限公司 | Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof |
CN103272679A (en) * | 2013-05-14 | 2013-09-04 | 北京欣瑞天成节能工程技术有限公司 | Method for contouring refractory aggregate |
CN103351107A (en) * | 2013-05-30 | 2013-10-16 | 大连理工大学 | Method for low temperature separation of waste concrete |
CN104446077A (en) * | 2014-11-14 | 2015-03-25 | 中联重科物料输送设备有限公司 | Separation method and separation system for waste concrete and rolling separator |
CN104446077B (en) * | 2014-11-14 | 2017-05-17 | 中联重科物料输送设备有限公司 | Separation method and separation system for waste concrete and rolling separator |
CN106216066A (en) * | 2016-08-04 | 2016-12-14 | 吉林市骅坊节能环保建材有限公司 | Construction refuse regenerated aggregate processes technique and device thereof |
CN106269160A (en) * | 2016-08-26 | 2017-01-04 | 孟玲 | A kind of powder processing system with deferrization functional |
CN108246428A (en) * | 2018-01-18 | 2018-07-06 | *** | The sandstone separation method and device of waste concrete |
CN109180042A (en) * | 2018-11-06 | 2019-01-11 | 西安建筑科技大学 | A kind of building discarded concrete high quality recycled aggregates recyclable device and method |
CN109180042B (en) * | 2018-11-06 | 2024-04-19 | 西安建筑科技大学 | High-quality recycled aggregate recycling device and method for waste concrete of building |
CN114341078A (en) * | 2019-09-02 | 2022-04-12 | 法孚斯弗克布公司 | Method for separating different components of demolished concrete for buildings |
CN110523498A (en) * | 2019-09-05 | 2019-12-03 | 杭州杰维科技有限公司 | A kind of building bar and concrete separation equipment |
CN112934420A (en) * | 2019-10-12 | 2021-06-11 | 曾彩霞 | Gunny pulp biological fiber blasting crushing centrifuge and blasting method |
CN112934420B (en) * | 2019-10-12 | 2023-01-03 | 曾彩霞 | Gunny pulp biological fiber blasting crushing centrifuge and blasting method |
CN111318550B (en) * | 2020-03-25 | 2021-04-20 | 深圳绿景环保再生资源有限公司 | Method for preparing recycled aggregate by using construction waste |
CN111318550A (en) * | 2020-03-25 | 2020-06-23 | 深圳绿景环保再生资源有限公司 | Method for preparing recycled aggregate by using construction waste |
CN112138752A (en) * | 2020-08-03 | 2020-12-29 | 平顶山学院 | Civil engineering construction waste treatment device |
CN112521035A (en) * | 2020-10-15 | 2021-03-19 | 西南科技大学 | Method for recycling waste concrete |
CN112645658A (en) * | 2020-12-29 | 2021-04-13 | 南通友力混凝土有限公司 | High-strength recycled concrete and production process thereof |
CN113831073A (en) * | 2021-09-27 | 2021-12-24 | 清华大学 | Building mortar regeneration and cyclic utilization method and system |
CN114345473A (en) * | 2022-01-21 | 2022-04-15 | 宋江勇 | Method for preparing cement micro-material by using solid waste |
Also Published As
Publication number | Publication date |
---|---|
CN100398214C (en) | 2008-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100398214C (en) | Waste concrete component separating method | |
CN106830728B (en) | A kind of building solid waste best quality treatment process | |
JP5032757B2 (en) | Manufacturing method of recycled aggregate | |
CN102010144A (en) | Method for preparing high-quality recycled fine aggregate by using waste concrete | |
CN102206054A (en) | Renewable active powder and preparation method thereof | |
CN109250938A (en) | A kind of regeneration activity powder and its method and apparatus by building waste preparation | |
WO2014110845A1 (en) | Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof | |
CN114309015A (en) | Building decoration garbage co-processing technology without manual sorting | |
JPH0630755B2 (en) | Method and apparatus for recycling concrete waste | |
CN101927258A (en) | Mobile construction waste treatment device | |
CN108569854A (en) | The application of building waste treatment process and gained recycled fine aggregate and reclaimed sand | |
JP2012017227A (en) | Waste concrete fine powder and method for recovering the same | |
CN205570434U (en) | System's device of abandonment concrete preparation reclaimed sand | |
JP3245549B2 (en) | Method for producing backfill sand | |
CN208786539U (en) | A kind of building waste grinding device | |
JP4152557B2 (en) | Manufacturing method of recycled aggregate | |
JP2001048612A (en) | Production of aggregate for architecture and civil engineering construction | |
JPH10272449A (en) | Waste concrete material treating method and device therefor | |
KR100371446B1 (en) | Anchor block Recycled by waste electric poles | |
JP3103269B2 (en) | How to collect recycled aggregate | |
CN208980595U (en) | A kind of device preparing regeneration activity powder by building waste | |
JP2538484B2 (en) | Method for preparing aggregate from concrete and asphalt waste | |
CN112176824A (en) | Asphalt reclaimed material crushing process | |
KR100317516B1 (en) | Method of grass solution coating for reproduction gravel | |
KR102573670B1 (en) | Manufacturing Method of Recycled Aggregate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080702 Termination date: 20140601 |