CN110252768A - A kind of quick-fried solution waste concrete component separation method of steam pressure - Google Patents
A kind of quick-fried solution waste concrete component separation method of steam pressure Download PDFInfo
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- CN110252768A CN110252768A CN201910522033.5A CN201910522033A CN110252768A CN 110252768 A CN110252768 A CN 110252768A CN 201910522033 A CN201910522033 A CN 201910522033A CN 110252768 A CN110252768 A CN 110252768A
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- steam pressure
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- 239000004567 concrete Substances 0.000 title claims abstract description 82
- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 238000000926 separation method Methods 0.000 title claims abstract description 23
- 239000004575 stone Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 238000002791 soaking Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010025 steaming Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 16
- 230000006872 improvement Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003426 chemical strengthening reaction Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of quick-fried solution waste concrete component separation method of steam pressure, comprising steps of 1) pre- full water: discarded concrete being broken into the block stone of 30-100mm partial size, and watering soaks block stone in advance；2) feed: the discarded concrete after soaking is conveyed through material-conveying belt, enters still kettle from the feed inlet on still kettle top；3) steam pressure vaporizes: still kettle being closed, starts heating equipment, vaporizes the pore water in concrete block stone rapidly；4) the quick-fried solution of discharge: when vapour pressure reaches setting limit value in still kettle, the Electromagnetic Control valve of still kettle lower end is washed open automatically, and recycled concrete aggregate stone is injected into silo under vapour pressure effect；5) sieve: the waste concrete component mixture after quick-fried solution enters classifying screen by the drain hole of silo bottom, isolates coarse aggregate, fine aggregate, Behavior of Hardened Cement Paste component in discarded concrete, completes component separation.The present invention can sufficiently remove regeneration concrete surface mortar, high production efficiency.
Description
Technical field
The present invention relates to a kind of quick-fried solution waste concrete component separation methods of steam pressure, belong to technical field of concrete.
Background technique
With quickly propelling for China's urbanization, the continuous expansion of infrastructure construction scale, a large amount of old buildings need
It removes and rebuilds.The annual building waste yield in China is up to 3,500,000,000 tons, wherein the building waste only removed just has 1,800,000,000 tons, according to
This trend will reach a peak value to the year two thousand twenty.Accounting maximum is exactly discarded concrete in building waste, how to handle this
A little discarded concretes become urgent problem to be solved.
Currently, be to be broken into regenerated coarse aggregate to the main treatment measures of discarded concrete, but the table of regenerated coarse aggregate
Face is attached to a large amount of cement mortar.The intensity of old sand slurry is far below natural aggregate, and rough surface, water absorption rate are big, lead to it
Basic performance has very big difference compared with natural aggregate, normally cannot largely use, can be only applied to subgrade and pavement, non-bearing
In structure and rudimentary product.Expand the application range of recycled aggregate of waste concrete, need to sufficiently remove discarded concrete again
The screed of raw coarse aggregate surface adhesion, removes stone sufficiently with mortar, it is comparable with natural aggregate to obtain purity and performance
Regenerated coarse aggregate.
At present there are two types of the main processing ways of discarded concrete regenerated coarse aggregate surface adhesion mortar: physical removal method and
Chemical strengthening method.Physical removal method mainly has Vertical Eccentric wheel high speed grinding method, horizontal controlled lapping method, calcining and grinding method and mill
Interior polishing etc., complex process, the equipment of these methods are huge, power source consumption is big, of a high price, therefore limit it and push away
Wide application.Chemical strengthening method is primarily referred to as using material of different nature (such as polymer, waterproofing agent of organosilicon, neat slurry, water
Mix outside mud and mix level-one flyash etc. outside Kim powder, cement) processing such as impregnated, eluted, being dried to recycled aggregate, make Regenerated Bone
The method for expecting to be strengthened.Although chemical strengthening is improved to some extent to the intensity of recycled aggregate itself, do not have far also
There are the purity and performance for reaching natural aggregate, and the higher cost of chemical treatment method, is not suitable for industrialized production, does not have
Application value.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of quick-fried solution waste concrete component separation sides of steam pressure
Method sufficiently removes the mortar on Aggregate of recycled concrete surface, solves traditional recycled aggregate of waste concrete surface adhesion sand
The problem of slurry.
To achieve the goals above, a kind of quick-fried solution waste concrete component separation method of steam pressure that the present invention uses, including
Step:
1) discarded concrete: being broken into the block stone of 30-100mm partial size by pre- full water, and watering soaks block stone in advance；
2) feed: the discarded concrete after soaking is conveyed through material-conveying belt, enters still kettle from the feed inlet on still kettle top；
3) steam pressure vaporizes: still kettle being closed, starts heating equipment, vaporizes the pore water in concrete block stone rapidly；
4) the quick-fried solution of discharge: when vapour pressure reaches setting limit value in still kettle, the Electromagnetic Control valve of still kettle lower end is certainly
Dynamic to wash open, recycled concrete aggregate stone is injected into silo under vapour pressure effect；
5) sieve: the waste concrete component mixture after quick-fried solution enters classifying screen by the drain hole of silo bottom, point
Coarse aggregate, the fine aggregate, Behavior of Hardened Cement Paste component in discarded concrete are separated out, component separation is completed.
As an improvement, the still kettle includes autoclave body, baroceptor, installation on the outside of autoclave body are installed on the inside of the autoclave body
There are controller, electromagnetic relay, the autoclave body bottom is equipped with Electromagnetic Control valve, and one end of Electromagnetic Control valve is equipped with iron core；
The baroceptor is connect with controller, and controller is connect with electromagnetic relay, when Electromagnetic Control valve is closed
When, the iron core is in contact with electromagnetic relay.
As an improvement, the top of the still kettle is equipped with feed inlet, the discarded concrete on the material-conveying belt is through feed inlet
Into still kettle.
As an improvement, the silo is funnel-shaped, open topped, lower part is connected by drain hole with classifying screen；The cylinder
Storehouse is supported and fixed on ground by rack.
As an improvement, the internal diameter on the silo top is greater than the internal diameter of still kettle.
As an improvement, the setting limit value in the step 4) is 2-3MPa.
Compared with prior art, the beneficial effects of the present invention are:
1) present invention can obtain purity close to natural aggregate regenerated coarse aggregate.Recycled concrete aggregate stone is in still kettle
After interior steep temperature rise, the water vapour of high temperature and pressure is accumulated in mostly among loose porous mortar.When water vapour is fast in concrete
When fast expansion outward, the quick-fried solution of relatively soft mortar, screed is sufficiently removed from the stone surface of regeneration concrete block stone, is obtained
Purity close to natural aggregate regenerated coarse aggregate, to improve the workability of regeneration concrete, intensity, durability.
2) high production efficiency of the invention.The method of tradition removal discarded concrete regenerated coarse aggregate surface adhesion mortar,
Need to carry out a series of cumbersome processing steps, the production cost is very high, but efficiency is lower.Recycled concrete aggregate stone list of the invention
The secondary quick-fried solution preocess of steam pressure only needs 5-10 minutes, and quick-fried solution amount is highly efficient in productivity up to tens of cubes.And present invention process step
Simply, good product effect can create more economic benefits.
3) separation method of the invention has apparent social benefit, economic benefit and environmental benefit.By discarded concrete
It is separated into recycled aggregate, not only saves natural sand stone aggregate, is alleviated because exploitation sandstone aggregate is destruction caused by environment, and
And efficiently solve the problems, such as waste processing, waste utilization, it is one of the major measure for developing green concrete.Simultaneously to reality
The sustainable development of existing concrete industry is of great significance.
Detailed description of the invention
Fig. 1 is separation process schematic diagram of the invention；
Fig. 2 is the charging schematic diagram of still kettle in the present invention；
Fig. 3 is the heating schematic diagram of still kettle in the present invention；
Fig. 4 is the quick-fried solution schematic diagram of still kettle in the present invention；
In figure: 1, discarded concrete, 2, material-conveying belt, 3, feed inlet, 4, still kettle, 41, baroceptor, 42, controller,
43, electromagnetic relay, 44, iron core, 5, Electromagnetic Control valve, 6, silo, 7, rack, 8, drain hole, 9, classifying screen.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention is carried out below further detailed
It describes in detail bright.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, it is not limited to this hair
Bright range.
As shown in Figure 1, a kind of quick-fried solution waste concrete component separation method of steam pressure, comprising steps of
1) discarded concrete 1: being broken into the block stone of 30-100mm partial size by pre- full water, and watering soaks block stone in advance；
2) feed: the discarded concrete 1 after soaking is conveyed through material-conveying belt 2, is entered from the feed inlet 3 on 4 top of still kettle and is steamed
Press kettle 4；
3) steam pressure vaporizes: still kettle 4 being closed, starts heating equipment, vaporizes the pore water in concrete block stone rapidly；
4) the quick-fried solution of discharge: when vapour pressure reaches setting limit value in still kettle 4, the Electromagnetic Control valve 5 of 4 lower end of still kettle
Automatically it washes open, recycled concrete aggregate stone is injected into silo 6 under vapour pressure effect；
5) sieve: the waste concrete component mixture after quick-fried solution enters classifying screen 9 by the drain hole 8 of 6 bottom of silo,
Coarse aggregate, the fine aggregate, Behavior of Hardened Cement Paste component in discarded concrete are isolated, component separation is completed.
As the improvement of embodiment, as shown in Figure 2, Figure 3 and Figure 4, the still kettle 4 includes autoclave body, the autoclave body inside
Baroceptor 41 is installed, controller 42, electromagnetic relay 43 are installed on the outside of autoclave body, the autoclave body bottom is equipped with electromagnetism control
One end of valve 5 processed, Electromagnetic Control valve 5 is equipped with iron core 44；
The baroceptor 41 is used to detect the pressure in still kettle 4, when baroceptor 41 detects in still kettle 4
Pressure close to setting limit value when, baroceptor 41 to controller 42 issue signal, controller 42 control electromagnetic relay 43
Power-off, the attraction between electromagnetic relay 43 and iron core 44 disappears at this time, and Electromagnetic Control valve 5 is opened, and discarded concrete 1 is through steaming
Kettle 4 is pressed to enter in silo 6.
As the improvement of embodiment, the top of the still kettle 4 is equipped with feed inlet 3, the discarded coagulation on the material-conveying belt 2
Soil 1 enters still kettle 4 through feed inlet 3, and each process linking is closer.
As the improvement of embodiment, the silo 6 is funnel-shaped, open topped, and lower part passes through drain hole 8 and classifying screen 9
It is connected；The silo 6 is supported and fixed on ground by rack 7, and overall structure stability is high, and use is more convenient.
As the improvement of embodiment, the internal diameter on 6 top of silo is greater than the internal diameter of still kettle 4.Using the diameter of silo 6
Much larger than the diameter of still kettle 4, so that the air-inflated pressure generated in quick-fried solution preocess sufficiently discharges, quick-fried solution is eliminated to silo 6
Impact；Silo 6, which plays, simultaneously goes along with sb. to guard him and collecting action.
As an improvement, the setting limit value in the step 4) is 2-3MPa.
Embodiment 1
A kind of quick-fried solution waste concrete component separation method of steam pressure, specifically includes the following steps:
1) discarded concrete: being broken into the block stone of 30-100mm partial size by pre- full water first, and watering soaks block stone in advance；
2) feed: the recycled concrete aggregate stone after soaking is placed on material-conveying belt 2, is delivered to still kettle by material-conveying belt 2
The feed inlet 3 on 4 tops, recycled concrete aggregate stone fall into still kettle 4 from feed inlet 3；
3) steam pressure vaporizes: the Electromagnetic Control valve 5 of the feed inlet 3 on 4 top of still kettle, bottom being closed, starting heating is set
It is standby, vaporize the pore water in concrete block stone rapidly, during the steam pressure in still kettle 4 is continuously improved, concrete
Vapour pressure inside and outside block stone remains balance, and quick-fried solution will not occur for recycled concrete aggregate stone；
4) the quick-fried solution of discharge: during steam pressure is increased, when baroceptor 41 detects the pressure in still kettle 4
Close to when setting limit value 2-3MPa, baroceptor 41 issues signal to controller 42, and controller 42 controls electromagnetic relay 43
Power-off, the attraction between electromagnetic relay 43 and iron core 44 disappears at this time, and Electromagnetic Control valve 5 is opened, and discarded concrete 1 is steaming
The lower injection of vapour pressure effect is fallen into silo 6, and vapour pressure balance is broken inside and outside block stone, and water vapour is sharply swollen outward in concrete
Swollen, steam pressure is more than the ultimate tensile of concrete, and the quick-fried solution of recycled concrete aggregate stone, mortar sufficiently removes from stone surface；
After the completion of quick-fried solution, the Electromagnetic Control valve 5 of still kettle is closed, carries out next round charging, steam pressure and quick-fried solution preocess；
5) sieve: the waste concrete component mixture after quick-fried solution enters classifying screen 9, separation by the drain hole 8 of silo 6
The components such as the coarse aggregate in discarded concrete, fine aggregate, Behavior of Hardened Cement Paste out complete component separation.
The present invention provides a kind of quick-fried solution waste concrete component separation methods of steam pressure, will be broken into 30-100mm partial size
Steam pressure makes the pore water rapid vaporization in block stone to limit value, steep temperature rise is set in recycled concrete aggregate stone addition still kettle,
During steam pressure in still kettle is continuously improved, the vapour pressure inside and outside concrete block stone is in a basic balance, recycled concrete aggregate
Quick-fried solution will not occur for stone.Still kettle lower end is equipped with Electromagnetic Control valve, will wash open automatically when vapour pressure reaches setting limit value valve,
Concrete block stone is spouting under vapour pressure effect, and vapour pressure balance is broken inside and outside concrete block stone, water vapour in block stone
It sharply expands outward, steam pressure is more than the ultimate tensile of concrete, and quick-fried solution occurs for recycled concrete aggregate stone, and stone is filled with mortar
Divide removing.The material screening after quick-fried solution finally being realized to, concrete gravel is separated with the component of mortar.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of quick-fried solution waste concrete component separation method of steam pressure, which is characterized in that comprising steps of
1) discarded concrete (1): being broken into the block stone of 30-100mm partial size by pre- full water, and watering soaks block stone in advance；
2) feed: discarded concrete (1) after soaking is conveyed through material-conveying belt (2), from the feed inlet (3) on still kettle (4) top into
Enter still kettle (4)；
3) steam pressure vaporizes: still kettle (4) being closed, starts heating equipment, vaporizes the pore water in concrete block stone rapidly；
4) the quick-fried solution of discharge: when still kettle (4) interior vapour pressure reaches setting limit value, the Electromagnetic Control valve of still kettle (4) lower end
(5) it washes open automatically, recycled concrete aggregate stone is injected into silo (6) under vapour pressure effect；
5) sieve: the waste concrete component mixture after quick-fried solution enters classifying screen by the drain hole (8) of silo (6) bottom
(9), coarse aggregate, the fine aggregate, Behavior of Hardened Cement Paste component in discarded concrete are isolated, component separation is completed.
2. the quick-fried solution waste concrete component separation method of a kind of steam pressure according to claim 1, which is characterized in that the steaming
Pressing kettle (4) includes autoclave body, is equipped with baroceptor (41) on the inside of the autoclave body, and controller (42), electricity are equipped on the outside of autoclave body
Magnetic relay (43), the autoclave body bottom are equipped with Electromagnetic Control valve (5), and one end of Electromagnetic Control valve (5) is equipped with iron core
(44)；The baroceptor (41) connect with controller (42), and controller (42) is connect with electromagnetic relay (43), works as electromagnetism
When control valve (5) is closed, the iron core (44) is in contact with electromagnetic relay (43).
3. the quick-fried solution waste concrete component separation method of a kind of steam pressure according to claim 2, which is characterized in that the steaming
The top of kettle (4) is pressed to be equipped with feed inlet (3), the discarded concrete (1) on the material-conveying belt (2) enters steam pressure through feed inlet (3)
Kettle (4).
4. the quick-fried solution waste concrete component separation method of a kind of steam pressure according to claim 1, which is characterized in that the cylinder
Storehouse (6) is funnel-shaped, open topped, and lower part is connected by drain hole (8) with classifying screen (9)；The silo (6) passes through rack
(7) it is supported and fixed on ground.
5. the quick-fried solution waste concrete component separation method of a kind of steam pressure according to claim 1, which is characterized in that the cylinder
The internal diameter on storehouse (6) top is greater than the internal diameter of still kettle (4).
6. the quick-fried solution waste concrete component separation method of a kind of steam pressure according to claim 1, which is characterized in that the step
It is rapid 4) in setting limit value be 2-3MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910522033.5A CN110252768B (en) | 2019-06-17 | 2019-06-17 | Autoclaved exploded waste concrete component separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910522033.5A CN110252768B (en) | 2019-06-17 | 2019-06-17 | Autoclaved exploded waste concrete component separation method |
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| CN110252768A true CN110252768A (en) | 2019-09-20 |
| CN110252768B CN110252768B (en) | 2023-09-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665617A (en) * | 2019-11-07 | 2020-01-10 | 西安建筑科技大学 | Microwave-assisted coarse aggregate recovery production line equipment and method thereof |
| CN110919856A (en) * | 2019-11-19 | 2020-03-27 | 谢建文 | Pumice concrete paving and soaking device for building |
| CN115415030A (en) * | 2022-08-08 | 2022-12-02 | 武汉科技大学 | Device for regenerating high-grade concrete aggregate through hydraulic detackification and application method |
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| JPH0679253A (en) * | 1992-07-16 | 1994-03-22 | Yukihiko Tokawa | Recycling method for used hygienic product |
| JPH08119697A (en) * | 1994-10-20 | 1996-05-14 | Ohbayashi Corp | Regeneration of aggregate |
| CN1830874A (en) * | 2005-03-10 | 2006-09-13 | 长江大学 | Method for producing steam-pressing silicate products by waste concrete |
| CN102010144A (en) * | 2010-11-01 | 2011-04-13 | 青岛理工大学 | Method for preparing high-quality recycled fine aggregates by utilizing waste concrete |
-
2019
- 2019-06-17 CN CN201910522033.5A patent/CN110252768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679253A (en) * | 1992-07-16 | 1994-03-22 | Yukihiko Tokawa | Recycling method for used hygienic product |
| JPH08119697A (en) * | 1994-10-20 | 1996-05-14 | Ohbayashi Corp | Regeneration of aggregate |
| CN1830874A (en) * | 2005-03-10 | 2006-09-13 | 长江大学 | Method for producing steam-pressing silicate products by waste concrete |
| CN102010144A (en) * | 2010-11-01 | 2011-04-13 | 青岛理工大学 | Method for preparing high-quality recycled fine aggregates by utilizing waste concrete |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665617A (en) * | 2019-11-07 | 2020-01-10 | 西安建筑科技大学 | Microwave-assisted coarse aggregate recovery production line equipment and method thereof |
| CN110919856A (en) * | 2019-11-19 | 2020-03-27 | 谢建文 | Pumice concrete paving and soaking device for building |
| CN110919856B (en) * | 2019-11-19 | 2021-06-04 | 广西共达建设工程有限公司 | Pumice concrete paving and soaking device for building |
| CN115415030A (en) * | 2022-08-08 | 2022-12-02 | 武汉科技大学 | Device for regenerating high-grade concrete aggregate through hydraulic detackification and application method |
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| CN110252768B (en) | 2023-09-26 |
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