CN114409318B - Preparation method of recycled concrete - Google Patents
Preparation method of recycled concrete Download PDFInfo
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- CN114409318B CN114409318B CN202210201351.3A CN202210201351A CN114409318B CN 114409318 B CN114409318 B CN 114409318B CN 202210201351 A CN202210201351 A CN 202210201351A CN 114409318 B CN114409318 B CN 114409318B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 106
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 238000005507 spraying Methods 0.000 claims abstract description 40
- 230000008014 freezing Effects 0.000 claims abstract description 35
- 238000007710 freezing Methods 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000005498 polishing Methods 0.000 claims abstract description 23
- 238000012216 screening Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003595 mist Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000001723 curing Methods 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000011707 mineral Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000001029 thermal curing Methods 0.000 claims abstract description 4
- 238000007669 thermal treatment Methods 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims description 65
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000008187 granular material Substances 0.000 description 16
- 230000007480 spreading Effects 0.000 description 10
- 238000003892 spreading Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000007605 air drying Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C19/186—Use of cold or heat for disintegrating
-
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a preparation method of recycled concrete, which comprises the following steps: crushing concrete blocks, namely mechanically crushing the concrete blocks by using a crusher; step two, primary screening, namely primary screening is carried out on concrete particles by using a vibrating screen; step three, freezing concrete particles, namely spraying water mist on the concrete particles by using a spray freezing device and freezing the concrete particles; polishing the concrete particles, namely polishing the concrete particles by using a polishing device; step five, secondary screening, namely performing secondary screening on the concrete particles by using a vibrating screen; step six, carrying out thermal curing on the concrete particles, namely heating the concrete particles by using a thermal treatment device and spraying curing liquid; and seventhly, mixing materials, namely adding the concrete particles after thermal curing, cement, mineral admixture and auxiliary agent into a stirrer for stirring to obtain the finished product recycled concrete. The invention relates to a preparation method which is convenient for increasing the strength of recycled concrete.
Description
Technical Field
The invention mainly relates to the technical field of concrete, in particular to a preparation method of recycled concrete.
Background
The regenerated concrete is prepared by crushing, cleaning and grading waste concrete blocks, mixing the crushed, cleaned and graded waste concrete blocks with a grading agent according to a certain proportion, partially or completely replacing natural aggregates such as sand stones and the like, and adding cement, water and the like.
According to the patent document with the application number of CN202110473855.6, the preparation method of the recycled concrete is known, and comprises the following steps: the method comprises the steps of pretreatment, cleaning, hammering, impurity removal and primary crushing treatment of waste concrete blocks, primary crushing and screening of the pretreated concrete blocks, screening of the concrete after the primary crushing treatment, obtaining of concrete particles with the particle size of less than 30mm after screening, secondary crushing treatment and classification treatment of the concrete particles with the particle size of more than 30mm after the primary screening, separation and classification of the concrete particles with the particle size of less than 30mm, removal of micro powder with the particle size of less than 1mm, and material mixing.
The method of the above patent can improve the properties of the recycled aggregate and improve the quality of recycled concrete, but it is inconvenient to increase the strength of the concrete after crushing.
Disclosure of Invention
The invention mainly provides a preparation method of recycled concrete, which is used for solving the technical problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a preparation method of recycled concrete comprises the following steps:
the method comprises the following steps of firstly, crushing concrete blocks, namely mechanically crushing the concrete blocks by using a crusher to obtain concrete I;
step two, primary screening, namely screening concrete particles with the particle size smaller than forty millimeters in the concrete I by using a vibrating screen to obtain concrete II;
step three, freezing concrete particles, namely spraying water mist on the concrete II by using a spray freezing device and freezing to obtain concrete III;
polishing concrete particles, namely polishing the outer surface of the concrete III by using a polishing device to obtain concrete IV;
screening by using a vibrating screen to obtain concrete particles with the particle size of less than thirty millimeters and more than ten millimeters in the concrete IV to obtain concrete V;
step six, carrying out thermal curing on the concrete particles, namely heating the concrete five by using a thermal treatment device and spraying curing liquid to obtain concrete six;
and seventhly, mixing materials, namely adding the concrete six, the cement, the mineral admixture and the auxiliary agent into a stirrer for stirring, and obtaining a finished product recycled concrete after stirring.
Preferably, the spraying refrigeration device includes the spray box, locates the first feed inlet of spray box top one end, and is located the spray box is kept away from first feed inlet one end and one end intercommunication the freezer of spray box lateral wall bottom, the spray box level is equipped with first transmission band, first transmission band one end runs through the freezer and extends to the outside, the spray box inner wall just is located be equipped with the vibration under the first feed inlet and spills the material part, a plurality of water smoke spray box are worn to be equipped with by the spray box lateral wall, freezer inner wall top is equipped with a plurality of low temperature freezing parts. In the preferred embodiment, the spray freezing device is used for freezing the primarily crushed concrete particles for subsequent grinding.
Preferably, the vibration is spilt the material part and is located including the slope the backup pad of spray box inner wall is located a plurality of outer tubes of backup pad upper surface, sliding connection outer tube inner wall and top extend to the fall tube on outer tube upper portion, locate the flitch that spills at fall tube top is located the first spring of outer tube outer wall, and locate spill the first vibrating motor of flitch bottom. In the preferred embodiment, the preliminarily crushed concrete particles are conveniently sprinkled by vibrating the material scattering part, so that the preliminarily crushed concrete particles are fully contacted with the water mist.
Preferably, the low-temperature freezing part comprises a positioning box arranged at the top of the inner wall of the freezing box and a plurality of evaporators arranged at the bottom of the inner wall of the positioning box. In the preferred embodiment, the frozen wet concrete particles are facilitated by the low temperature freezing component to facilitate the surface of the concrete particles becoming brittle.
Preferably, grinding device includes the case of polishing, locates the second feed inlet at the roof portion of polishing is located in proper order from top to bottom polish incasement wall's the part of smashing in advance of shaking, guide part and the part of polishing, the guide part is used for will shaking the part of smashing in advance exhaust material immigration part of smashing in advance, the guide part is located including the slope polish incasement wall and the stock guide of one end butt case inside wall of polishing, the slope sets up and the L shape of one end butt stock guide other end opens and close the board to and locate polish incasement wall and be used for driving the L shape and open and close the actuating cylinder that the board removed. In the preferred embodiment, the frozen concrete particles are conveniently ground by the grinding device, so that the frozen and brittle layer on the surface of the concrete is peeled off, and the surface of the concrete particles can be ground to be smooth, so that the strength of the concrete particles is enhanced.
Preferably, the part of smashing in advance of shaking is located including the level the incasement of polishing base plate, and the board is shaken to the bottom through a plurality of second spring coupling base plate upper surface, locates a plurality of second vibrating motor of board bottom of shaking, and locate the ladder of the incasement wall top of polishing shakes and beats the piece. In the preferred embodiment, the crushing of the frozen brittle layer on the surface of the concrete particles is facilitated by the impact of the pre-crushing member.
Preferably, the part of polishing is including locating polish incasement funnel pipe, top intercommunication funnel bottom, bottom intercommunication polish the grinding pipe of incasement wall bottom, locate polish bottom of the case portion and with the L shape of grinding pipe intercommunication is arranged the material pipe, is located the driving motor of material socle portion is arranged to the L shape, and is located driving motor execution end just extends to the intraductal grinding roller of grinding. In the preferred embodiment, the concrete particles are sufficiently sanded by the sanding component.
Preferably, the heat treatment device comprises a heat treatment box, a third feeding port arranged at the top of the heat treatment box, a second conveying belt arranged in the heat treatment box, a liquid spraying part arranged at the top of the heat treatment box and a hot air part arranged at the bottom of the heat treatment box. In the preferred embodiment, the heat treatment device is used for facilitating the maintenance of the ground concrete particles so as to enhance the strength of the concrete particles.
Preferably, the liquid spraying part comprises a plurality of spraying boxes arranged at the top of the heat treatment box in a penetrating mode, a liquid storage tank arranged at the top of the heat treatment box and communicated with the spraying boxes through pipelines, and a booster pump arranged at the top of the liquid storage tank. In the preferred embodiment, the spraying of the curing liquid is facilitated by a liquid spraying member.
Preferably, the hot air component comprises a plurality of air boxes communicated with the bottom of the heat treatment box, a transmission motor arranged in the air boxes, fan blades arranged at the execution end of the transmission motor, and a heater arranged on the upper side of the air boxes and arranged on the inner wall of the heat treatment box. In the preferred embodiment, drying of the concrete particles is facilitated by hot air components.
Compared with the prior art, the invention has the following beneficial effects:
the preparation method of the invention is convenient for increasing the strength of the crushed concrete so as to enhance the strength of the recycled concrete,
through freezing, the intensity of concrete granule is strengthened to the mode of polishing and maintenance, be convenient for freeze the concrete granule after preliminary breakage through the spray refrigeration device, so that subsequent polishing, spill the material part through the vibration among the spray refrigeration device and be convenient for to spill the concrete granule after preliminary breakage, so that the concrete granule after preliminary breakage fully contacts water smoke, be convenient for freeze moist concrete granule through low temperature freezing part, so that concrete granule surface becomes fragile, be convenient for polish the concrete granule after freezing through grinding device, so that concrete surface freezes fragile layer and peels off, can polish concrete granule surface smooth simultaneously, so that strengthen the intensity of concrete granule, be convenient for the fragile layer of freezing on concrete granule surface to be broken through the part of strikeing in the grinding device, be convenient for fully polish the concrete granule through grinding part, be convenient for maintain the concrete granule after polishing through heat treatment device, so that strengthen the intensity of concrete granule, be convenient for through the spraying of liquid part in the heat treatment device, be convenient for protect the drying of liquid through hot-blast drying of concrete granule.
The present invention will be explained in detail below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is an overall process flow diagram of the present invention;
FIG. 2 is an isometric view of the spray freezer of the present invention;
FIG. 3 is a top view of the spray freezer of the present invention;
FIG. 4 is a sectional view of the spray freezer of the present invention;
FIG. 5 is an isometric view of the grinding device of the present invention;
FIG. 6 is a cross-sectional view of a polishing device according to the present invention;
FIG. 7 is an isometric view of a heat treatment apparatus of the present invention;
FIG. 8 is a sectional view showing the structure of a heat treatment apparatus according to the present invention.
Description of the drawings: 10. a spray freezer; 11. a first feed port; 12. a freezer; 13. a first conveyor belt; 14. vibrating the material spreading part; 141. a support plate; 142. an outer sleeve; 143. a lifting pipe; 144. a material spreading plate; 145. a first spring; 146. a first vibration motor; 15. a water mist spraying box; 16. a cryogenic refrigeration component; 161. a positioning box; 162. an evaporator; 17. a spray box; 20. a polishing device; 21. grinding a box; 22. a second feed port; 23. vibrating and pre-crushing the component; 231. a base plate; 232. a second spring; 233. a vibrating plate; 234. a second vibration motor; 235. a stepped tapping block; 24. a material guiding part; 241. a stock guide; 242. an L-shaped opening and closing plate; 243. a drive cylinder; 25. polishing the component; 251. a funnel tube; 252. grinding the tube; 253. an L-shaped discharge pipe; 254. a drive motor; 255. grinding a roller; 30. a heat treatment device; 31. a heat treatment tank; 32. a third feed port; 33. a second conveyor belt; 34. a liquid sprinkling component; 341. spraying the box; 342. a liquid storage tank; 343. a booster pump; 35. a hot air component; 351. an air box; 352. a drive motor; 353. a fan blade; 354. a heater.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of such term knowledge in the specification of the invention is for the purpose of describing particular embodiments and is not intended to be limiting of the invention, and the use of the term "and/or" herein includes any and all combinations of one or more of the associated listed items.
Referring now to FIGS. 1-4, in a preferred embodiment of the present invention, a method for preparing recycled concrete includes the steps of: the method comprises the following steps of firstly, crushing concrete blocks, namely mechanically crushing the concrete blocks by using a crusher to obtain concrete I; step two, primary screening, namely screening concrete particles with the particle size smaller than forty millimeters in the concrete I by using a vibrating screen to obtain concrete II; step three, freezing concrete particles, namely spraying water mist on the concrete II by using a spray freezing device 10 and freezing to obtain concrete III; spray refrigerating plant 10 includes spray box 17, locates the first feed inlet 11 of spray box 17 top one end, and is located spray box 17 keeps away from first feed inlet 11 one end and one end intercommunication the freezer 12 of spray box 17 lateral wall bottom, the level is equipped with first transmission band 13 in the spray box 17, first transmission band 13 one end runs through freezer 12 and extends to the outside, spray box 17 inner wall just is located be equipped with vibration material scattering part 14 under first feed inlet 11, spray box 17 lateral wall is worn to be equipped with a plurality of water smoke and is sprayed box 15, freezer 12 inner wall top is equipped with a plurality of low temperature freezing parts 16, vibration material scattering part 14 locates including the slope the backup pad 141 of spray box 17 inner wall is located a plurality of outer tubes 142 of backup pad 141 upper surface, sliding connection outer tube 142 inner wall and top extend to riser 143 on outer tube 142 upper portion, locate the material scattering plate 144 at riser 143 top, the cover is located the first spring 145 of 142 outer wall, and locate the first vibrating motor 146 of material scattering plate 144 bottom, low temperature freezing parts 16 locates the top of outer tube 161 and the evaporator 161 and the top of freezer box 161 are located a plurality of freezer inner wall 162.
It should be noted that, in this embodiment, during preparation, a crusher is used to mechanically crush a concrete block, and a vibrating screen is used to screen out concrete particles with a particle size of less than forty millimeters, the concrete particles with a particle size of less than forty millimeters are poured into the first feed inlet 11, the concrete particles fall on the vibrating scattering part 14, the vibrating scattering part 14 vibrates and scatters the concrete particles, at this time, clear water may be introduced into the water mist spraying box 15, water is sprayed out through the water mist spraying box 15 to moisten the concrete particles, the moistened concrete particles fall on the first conveying belt 13, the first conveying belt 13 drives the moistened concrete particles to pass through the low-temperature freezing part 16, and the low-temperature freezing part 16 freezes the moistened concrete particles so as to form a frozen and brittle layer on the surface of the concrete particles, so as to facilitate subsequent grinding;
further, when the vibrating spreading part 14 works, the first vibrating motor 146 drives the spreading plate 144 to vibrate, and concrete particles falling on the spreading plate 144 are vibrated and spread out;
further, when the low-temperature freezing component 16 operates, the refrigeration system connected to the evaporator 162 starts to operate, and the evaporator 162 cools the positioning box 161 to freeze the wet concrete granules passing through the bottom of the positioning box 161.
Referring now to fig. 1, 5 and 6, in another preferred embodiment of the present invention, in step four, concrete particles are ground, and the outer surface of the concrete is ground by a grinding device 20 to obtain concrete four; screening by using a vibrating screen to obtain concrete particles with the particle size of less than thirty millimeters and more than ten millimeters in the concrete IV to obtain concrete V; grinding device 20 is including grinding box 21, locates the second feed inlet 22 at grinding box 21 top, and top-down locates according to the preface the part 23, guide part 24 and the part 25 of polishing is smashed in advance in the vibrations of grinding box 21 inner wall, guide part 24 is used for smashing the part 23 exhaust material immigration of smashing in advance and polishes the part 25, guide part 24 is located including the slope grind the guide plate 241 of box 21 inner wall and one end butt grinding box 21 inside wall, slope setting and the L shape of one end butt guide plate 241 other end open and close board 242, and locate grind box 21 inner wall and be used for driving the L shape to open and close the actuating cylinder 243 that board 242 removed, the part 23 that smashes in advance includes that the level is located polish base plate 231 in the box 21, the bottom is through the board 233 that shakes of the upper surface of a plurality of second spring 232 connection base plate 231, locate a plurality of second vibrating motor 234 of vibrating plate 233 bottom, and locate the ladder piece 235 at grinding box 21 inner wall top of grinding box 21 inner wall top, polish the part 25 including locating grind box 254 in the actuating tube 255, polish the actuating tube bottom of box 21, polish the actuating tube bottom is connected with the actuating tube 253, the actuating tube 251 of grinding motor is located, the bottom of hopper 21, polish the actuating tube is connected with the actuating tube and is located the bottom end of the hopper tube 252, the hopper 21, the bottom is connected to the actuating tube extension tube is connected to grind the hopper 21, and is located, the hopper 21 bottom end is connected the hopper 21, the extension tube is located the bottom end is connected the hopper tube bottom end 253, the hopper tube is connected with the hopper tube 252, the hopper tube.
It should be noted that, in this embodiment, the frozen concrete particles are poured into the grinding box 21 through the second feed port 22, the vibration pre-crushing component 23 in the grinding box 21 crushes the frozen and brittle layer on the surface of the concrete particles, the concrete particles after being vibrated by the vibration pre-crushing component 23 fall into the material guide 241 and slide up and down on the material guide 241 under the action of gravity, when the L-shaped opening and closing plate 242 is far away from the material guide 241 under the action of the driving cylinder 243, the concrete particles can fall into the grinding component 25 for grinding, and after grinding, the concrete particles with a particle size of less than thirty millimeters and more than ten millimeters are screened out by using a vibrating screen;
further, when the vibration pre-crushing component 23 works, the second vibration motor 234 drives the vibration plate 233 to vibrate, and the vibration plate 233 is matched with the stepped vibration block 235 to crush the frozen and brittle layer of the concrete particles;
further, when the grinding component 25 works, the execution end of the driving motor 254 drives the grinding roller 255 to rotate, concrete particles leaking from the hopper pipe 251 fall into the grinding pipe 252, and are ground between the inner wall of the grinding pipe 252 and the outer wall of the grinding roller 255.
Referring now to fig. 1, 7 and 8, in another preferred embodiment of the present invention, in step six, the concrete granules are heat cured, and the concrete five is heated and the curing liquid is sprayed by the heat treatment device 30 to obtain concrete six; and seventhly, mixing materials, namely adding the concrete six, the cement, the mineral admixture and the auxiliary agent into a stirrer for stirring, and obtaining a finished product recycled concrete after stirring. The heat treatment device 30 includes a heat treatment box 31, a third feed inlet 32 disposed at the top of the heat treatment box 31, a second conveying belt 33 disposed in the heat treatment box 31, a liquid sprinkling member 34 disposed at the top of the heat treatment box 31, and a hot air member 35 disposed at the bottom of the heat treatment box 31, wherein the liquid sprinkling member 34 includes a plurality of spray boxes 341 penetrating the top of the heat treatment box 31, a liquid storage tank 342 disposed at the top of the heat treatment box 31 and communicating the plurality of spray boxes 341 through a pipe, and a booster pump 343 disposed at the top of the liquid storage tank 342, the hot air member 35 includes a plurality of air boxes 351 communicating the bottom of the heat treatment box 31, a driving motor 352 disposed in the air boxes 351, fan blades 353 disposed at the execution end of the driving motor 352, and a heater 354 disposed at the inner wall of the heat treatment box 31 and located above the air boxes 351.
It should be noted that, in this embodiment, the concrete particles after the secondary screening are poured into the heat treatment box 31 through the third feeding port 32, the concrete particles fall on the second conveyor belt 33, at this time, the hot air part 35 heats and air-dries the concrete particles, the liquid spraying part 34 sprays the curing liquid on the surfaces of the concrete particles after the concrete particles are air-dried, and the hot air part 35 heats and air-dries the concrete particles again after the spraying is completed;
adding the air-dried concrete particles, cement, mineral admixture and auxiliary agent into a stirrer for stirring, and obtaining a finished product of recycled concrete after stirring;
further, when the hot air component 35 works, the transmission motor 352 drives the fan blade 353 to rotate so as to generate an air flow, and the heater 354 heats the air flow;
further, when the liquid spraying part 34 is operated, the pressurizing pump 343 pressurizes the inside of the liquid storage tank 342, and the maintenance liquid in the liquid storage tank 342 is sprayed out through the pipe and the spray box 341.
The specific process of the invention is as follows:
during preparation, a crusher is used for mechanically crushing concrete blocks, a vibrating screen is used for screening concrete particles with the particle size smaller than forty millimeters, the concrete particles with the particle size smaller than forty millimeters are poured into a first feed port 11, the concrete particles fall on a vibrating spreading part 14, the vibrating spreading part 14 vibrates and sprinkles the concrete particles, clear water can be introduced into a water mist spraying box 15 at the moment, the water is sprayed out through the water mist spraying box 15 to moisten the concrete particles, the moistened concrete particles fall on a first conveying belt 13, the first conveying belt 13 drives the moistened concrete particles to pass through a low-temperature freezing part 16, and the low-temperature freezing part 16 freezes the moistened concrete particles to form a frozen and brittle layer on the surface of the concrete particles so as to facilitate subsequent grinding;
when the vibrating spreading part 14 works, the first vibrating motor 146 drives the spreading plate 144 to vibrate, and concrete particles falling on the spreading plate 144 are vibrated and spread;
when the low-temperature freezing component 16 works, the refrigeration system connected with the evaporator 162 starts to work, and the evaporator 162 cools the positioning box 161 so as to freeze the wet concrete particles passing through the bottom of the positioning box 161;
pouring the frozen concrete particles into a grinding box 21 through a second feeding hole 22, crushing the frozen brittle layer on the surface of the concrete particles by a vibrating and pre-crushing part 23 in the grinding box 21, enabling the concrete particles after vibrating and pre-crushing the concrete particles 23 to fall into a material guide plate 241 and slide up and down on the material guide plate 241 under the action of gravity, enabling the concrete particles to fall into a grinding part 25 for grinding when an L-shaped opening and closing plate 242 is far away from the material guide plate 241 under the action of a driving cylinder 243, and screening out the concrete particles with the particle size of less than thirty millimeters and more than ten millimeters by using a vibrating screen after grinding is finished;
when the vibration pre-crushing component 23 works, the second vibration motor 234 drives the vibration plate 233 to vibrate, and the vibration plate 233 is matched with the stepped vibration block 235 to crush the frozen and brittle layer of the concrete particles;
when the grinding component 25 works, the execution end of the driving motor 254 drives the grinding roller 255 to rotate, concrete particles leaking from the hopper pipe 251 fall into the grinding pipe 252, and the grinding component polishes the inner wall of the grinding pipe 252 and the outer wall of the grinding roller 255;
pouring the concrete particles after the secondary screening into a heat treatment box 31 through a third feeding port 32, enabling the concrete particles to fall on a second conveying belt 33, heating and air-drying the concrete particles by a hot air part 35 at the moment, spraying a curing liquid on the surfaces of the concrete particles by a liquid spraying part 34 after the concrete particles are air-dried, and heating and air-drying the concrete particles again by the hot air part 35 after the spraying is finished;
adding the air-dried concrete particles, cement, mineral admixture and auxiliary agent into a stirrer for stirring to obtain a finished product recycled concrete after stirring;
when the hot air component 35 works, the transmission motor 352 drives the fan blade 353 to rotate so as to generate air flow, and the heater 354 heats the air flow;
when the liquid spraying component 34 works, the pressurizing pump 343 pressurizes the liquid storage tank 342, and the curing liquid in the liquid storage tank 342 is sprayed out through the pipeline and the spraying box 341.
The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (7)
1. The preparation method of the recycled concrete is characterized by comprising the following steps of:
the method comprises the following steps of firstly, crushing concrete blocks, namely mechanically crushing the concrete blocks by using a crusher to obtain concrete I;
step two, primary screening, namely screening concrete particles with the particle size smaller than forty millimeters in the concrete I by using a vibrating screen to obtain concrete II;
thirdly, freezing concrete particles, namely spraying water mist on the second concrete by using a spray freezing device (10) and freezing to obtain third concrete;
polishing concrete particles, namely polishing the outer surface of the concrete III by using a polishing device (20) to obtain concrete IV;
screening by using a vibrating screen to obtain concrete particles with the particle size of less than thirty millimeters and more than ten millimeters in the concrete IV to obtain concrete V;
step six, carrying out thermal curing on the concrete particles, namely heating the concrete five by using a thermal treatment device (30) and spraying curing liquid to obtain concrete six;
step seven, mixing materials, namely adding the concrete six, the cement, the mineral admixture and the auxiliary agent into a stirrer for stirring, and obtaining a finished product recycled concrete after stirring;
the spraying refrigeration device (10) comprises a spraying box (17), a first feed inlet (11) and a first transmission belt (13), wherein the first feed inlet (11) is arranged at one end of the top of the spraying box (17), the first transmission belt (13) is horizontally arranged in the spraying box (17), the first transmission belt (13) is arranged at one end of the spraying box (17) in a penetrating mode and extends to the outside through the freezing box (12), the inner wall of the spraying box (17) is arranged under the first feed inlet (11), a plurality of water mist spraying boxes (15) are arranged on the side wall of the spraying box (17) in a penetrating mode, a plurality of low-temperature freezing parts (16) are arranged at the top of the inner wall of the freezing box (12), the vibrating parts (14) are arranged on a support plate (141) of the inner wall of the spraying box (17) in an inclined mode, the plurality of upper surfaces of support plates (142) of the support plate (141) are arranged, the inner wall of the sliding connection pipe (142) and the top end of the outer sleeve (142), the outer sleeve (143) is arranged on the outer sleeve (143), and a first lifting pipe (144) is arranged on the outer wall of a first transmission plate (144) and a first vibration plate (144) of a vibration motor, the low-temperature freezing part (16) comprises a positioning box (161) arranged at the top of the inner wall of the freezing box (12) and a plurality of evaporators (162) arranged at the bottom of the inner wall of the positioning box (161).
2. The preparation method of recycled concrete according to claim 1, wherein the grinding device (20) comprises a grinding box (21), a second feeding port (22) arranged at the top of the grinding box (21), a vibration pre-crushing component (23), a material guiding component (24) and a grinding component (25) which are sequentially arranged on the inner wall of the grinding box (21) from top to bottom, the material guiding component (24) is used for moving the materials discharged by the vibration pre-crushing component (23) into the grinding component (25), the material guiding component (24) comprises a material guiding plate (241) which is obliquely arranged on the inner wall of the grinding box (21) and one end of which abuts against the inner wall of the grinding box (21), an L-shaped opening and closing plate (242) which is obliquely arranged and one end of which abuts against the other end of the material guiding plate (241), and a driving cylinder (243) which is arranged on the inner wall of the grinding box (21) and is used for driving the L-shaped opening and closing plate (242) to move.
3. The method for preparing recycled concrete according to claim 2, wherein the rapping pre-crushing unit (23) comprises a base plate (231) horizontally arranged in the grinding box (21), a rapping plate (233) connected to the upper surface of the base plate (231) at the bottom by a plurality of second springs (232), a plurality of second vibrating motors (234) arranged at the bottom of the rapping plate (233), and a stepped rapping block (235) arranged at the top of the inner wall of the grinding box (21).
4. The method for preparing recycled concrete according to claim 2, wherein the grinding member (25) comprises a hopper pipe (251) disposed in the grinding box (21), a grinding pipe (252) having a top end communicated with the bottom of the hopper pipe (251) and a bottom end communicated with the bottom of the inner wall of the grinding box (21), an L-shaped discharge pipe (253) disposed at the bottom of the grinding box (21) and communicated with the grinding pipe (252), a driving motor (254) disposed at the bottom of the L-shaped discharge pipe (253), and a grinding roller (255) disposed at an actuating end of the driving motor (254) and extending into the grinding pipe (252).
5. The recycled concrete manufacturing method according to claim 1, wherein the heat treatment device (30) comprises a heat treatment tank (31), a third feeding port (32) provided at the top of the heat treatment tank (31), a second conveyor (33) provided in the heat treatment tank (31), a sprinkling member (34) provided at the top of the heat treatment tank (31), and a hot air member (35) provided at the bottom of the heat treatment tank (31).
6. The recycled concrete manufacturing method according to claim 5, wherein the sprinkling member (34) comprises a plurality of spraying boxes (341) penetrating the top of the heat treatment box (31), a liquid storage tank (342) provided at the top of the heat treatment box (31) and communicating the plurality of spraying boxes (341) through a pipe, and a booster pump (343) provided at the top of the liquid storage tank (342).
7. The recycled concrete manufacturing method according to claim 5, wherein the hot air unit (35) includes a plurality of air boxes (351) communicating with the bottom of the heat treatment box (31), a driving motor (352) provided in the air boxes (351), fan blades (353) provided at an actuating end of the driving motor (352), and a heater (354) provided on an inner wall of the heat treatment box (31) and located above the air boxes (351).
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| CN114409318B true CN114409318B (en) | 2022-11-18 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761169A (en) * | 2015-04-27 | 2015-07-08 | 河南城建学院 | Freezing reclamation method for waste concrete |
| CN204550406U (en) * | 2015-04-27 | 2015-08-12 | 河南城建学院 | A kind of freezing regenerating unit of discarded concrete |
| JP2019151536A (en) * | 2018-03-06 | 2019-09-12 | 太平洋セメント株式会社 | Manufacturing method of recycled coarse aggregate |
| CN110270394A (en) * | 2019-07-24 | 2019-09-24 | 清远市清新区谷城矿业开发投资有限公司 | A kind of aggregate crushing device and breaking method |
| CN212017997U (en) * | 2019-12-30 | 2020-11-27 | 安徽正凯源环保科技有限公司 | Aggregate crushing and conveying device |
| CN112174590A (en) * | 2020-10-19 | 2021-01-05 | 武汉娲石商砼有限公司 | Preparation method of recycled concrete and recycled concrete |
| CN113105135A (en) * | 2021-03-25 | 2021-07-13 | 中交二公局第四工程有限公司 | Production process of cement concrete recycled aggregate |
| CN113149564A (en) * | 2021-04-29 | 2021-07-23 | 河南多利克生态环保科技有限公司 | Preparation method of recycled concrete |
-
2022
- 2022-03-03 CN CN202210201351.3A patent/CN114409318B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761169A (en) * | 2015-04-27 | 2015-07-08 | 河南城建学院 | Freezing reclamation method for waste concrete |
| CN204550406U (en) * | 2015-04-27 | 2015-08-12 | 河南城建学院 | A kind of freezing regenerating unit of discarded concrete |
| JP2019151536A (en) * | 2018-03-06 | 2019-09-12 | 太平洋セメント株式会社 | Manufacturing method of recycled coarse aggregate |
| CN110270394A (en) * | 2019-07-24 | 2019-09-24 | 清远市清新区谷城矿业开发投资有限公司 | A kind of aggregate crushing device and breaking method |
| CN212017997U (en) * | 2019-12-30 | 2020-11-27 | 安徽正凯源环保科技有限公司 | Aggregate crushing and conveying device |
| CN112174590A (en) * | 2020-10-19 | 2021-01-05 | 武汉娲石商砼有限公司 | Preparation method of recycled concrete and recycled concrete |
| CN113105135A (en) * | 2021-03-25 | 2021-07-13 | 中交二公局第四工程有限公司 | Production process of cement concrete recycled aggregate |
| CN113149564A (en) * | 2021-04-29 | 2021-07-23 | 河南多利克生态环保科技有限公司 | Preparation method of recycled concrete |
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| CN114409318A (en) | 2022-04-29 |
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