CN109678378A - A kind of application of building waste treatment process and gained recycled aggregate - Google Patents

A kind of application of building waste treatment process and gained recycled aggregate Download PDF

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Publication number
CN109678378A
CN109678378A CN201910174058.0A CN201910174058A CN109678378A CN 109678378 A CN109678378 A CN 109678378A CN 201910174058 A CN201910174058 A CN 201910174058A CN 109678378 A CN109678378 A CN 109678378A
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China
Prior art keywords
building waste
level
sieve
building
aggregate
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CN201910174058.0A
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Chinese (zh)
Inventor
惠剑
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Sixian Huizhi Building Materials Co Ltd
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Sixian Huizhi Building Materials Co Ltd
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Priority to CN201910174058.0A priority Critical patent/CN109678378A/en
Publication of CN109678378A publication Critical patent/CN109678378A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use 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
    • C04B20/02Treatment
    • C04B20/026Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment

Abstract

The invention discloses a kind of building waste treatment process, belong to building waste recovery processing and recycle field, comprising the following steps: artificial sorting, level-one screening, level-one is broken, magnetic separation, selection by winnowing, drying, two-stage crushing, second level screening, rinses process.The present invention carries out different degrees of break process by the building waste to different-grain diameter, and treated building waste drying process again, last recycled aggregate obtained, surface attachments are few, particle diameter distribution is uniform.The invention also discloses a kind of application of recycled aggregate obtained by building waste treatment process, mass percent of the recycled fine aggregate in environmental protection brick is 5~20%, and mass percent of the regenerated coarse aggregate in environmental protection brick is 40~70%.

Description

A kind of application of building waste treatment process and gained recycled aggregate
Technical field
The invention belongs to building waste recovery processing and recycle field, and in particular to building waste treatment process and gained The utilization of recycled aggregate.
Background technique
With industrialization, the acceleration of urbanization process, construction industry has also obtained rapid growth, has thereby produced a large amount of buildings Rubbish.Most building wastes are unprocessed, are just landfilled or topple over mode and arbitrarily handle in countryside or rural area, do not meet state The environmental protection policy that family advocates, and this processing mode easily generates following hidden danger:
1. building waste, which exists, much contains the rubbish such as heavy metal and paint, coating, these rubbish are with extraneous natural The erosion of the difference variation and rain and snow weather of environment, easily chemically reacts, and such as the sulfate ion in plasterboard, is covering Hydrogen sulfide gas and other carcinogenic substances can be generated during burying, part dust-like and chemicals are also by polluted source and sky Gas causes PM2.5 exceeded and earth's surface even groundwater quality disaster, occupies bad border to people and generate greatly destruction, endanger humane health.
2. Part Development quotient lacks management, arbitrarily stack, avalanche phenomenon also easily occurs, damages urban public utilities, lead Highway blocking or the blocking of discharge conduit are caused, draining, flood carrying capacity is caused to reduce, or even cause the injury of personnel;It causes to account for Too long with arable land duration, cause the pollution of arable land soil property.
3. also largely there are part combustibles in building waste, in the case where lacking management, Yi Fasheng in bad weather Fire causes damage to property.
Therefore, statement is held based on above-mentioned, the invention proposes at a kind of building waste recycling for agreeing with national environmental protection policy Reason and the technique of effective use.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of building waste treatment process And the utilization of gained recycled aggregate, the recycled aggregate through the process, surface attachments are few, particle diameter distribution is uniform.
The present invention is to solve above-mentioned technical problem by the following technical programs:
A kind of building waste treatment process, comprising the following steps:
(1) artificial to sort: to be classified by the way of manually sorting to building waste;
(2) level-one is sieved: the building waste after sorting is sieved into the first building waste, the second building waste with sieve, Wherein, partial size of the partial size of the first building waste less than the second building waste;
(3) level-one is broken: the second building waste after level-one is sieved enters oscillating feeder by feed bin;Second building Rubbish is sent into crusher A by oscillating feeder and is crushed, until all broken second building wastes pass through first Sieve;Wherein, the aperture of the first sieve is less than or equal to the partial size of the first building waste;
(4) it magnetic separation: is formed by the first building waste sieved through level-one and through broken second building waste of step (3) Level-one material the metalliferous material in level-one material is removed by magnetic separator;
(5) selection by winnowing: the level-one material after magnetic separation is sent into winnowing machine, removes plastics, fiber in level-one material;
(6) dry: will through step (5) treated that level-one material is put into baker dries;
(7) two-stage crushing: the level-one material after drying being sent into crusher B and is crushed, until all broken level-ones Material obtains second level material by the second sieve;Aperture of the aperture of second sieve less than the first sieve;
(8) second level is sieved: second level material is sent into circular shale shaker, and third building waste, the 4th building waste are screened out, In, the partial size of the partial size of third building waste less than the 4th building waste;Third building waste is recycled fine aggregate;
(9) rinse: by the 4th building waste rinse, remove impurity, filtered, dry after obtain regenerated coarse aggregate.
Working principle:
Building waste sorts, after screening through artificial, obtains the building waste of different-grain diameter.Lead to surface of material due to broken Some micro-cracks are generated, excessive micro-crack can not only reduce the hardness of material, but also the water absorption rate of material can be made to increase, and influence The utilization rate of recycled aggregate, the present invention carry out different degrees of break process for the building waste of different-grain diameter, effectively control The quantity of surface of material micro-crack.
Level-one material carries out two-stage crushing after hot-air seasoning, drying and processing can weaken remain in level-one material mortar with The bonding strength of aggregate facilitates mortar in subsequent shattering process and falls off from aggregate surface.
The utility model has the advantages that
The higher same partial size model of uniformity coefficient can be obtained through different degrees of break process in the building waste of different-grain diameter Interior recycled aggregate, good separation effect are enclosed, division of labor operation saves human and material resources;Two-stage crushing is carried out after level-one drying materials, is protected The surface cleanliness of aggregate is demonstrate,proved;4th building waste is rinsed, influences the impurity of intensity to remove clay, mud etc..
Preferably, the aperture of sieve is 200mm in the step (2), and the particle size range of first building waste is less than The particle size range of 200mm, second building waste are more than or equal to 200mm;Circular shale shaker aperture is in the step (8) 5mm, the particle size range of third building waste are less than 5mm, and the particle size range of the 4th building waste is 5~40mm.
Preferably, the second building waste in the step (3) is broken through crusher A, does not pass through the first sieve after being crushed The second building waste be crushed again, until all the second building waste passes through the first sieve.
Preferably, the operating temperature of baker is 200~400 DEG C in the step (6).
Preferably, in the step (7) after crusher B is broken, after being crushed again not by the level-one material of the second sieve It is secondary broken, until all level-one materials pass through the second sieve.Preferably, the crusher A in the step (3) is jaw crushing Machine;Crusher B in the step (7) is impact breaker.
Preferably, the level-one material after selection by winnowing is put into baker by conveyer belt in the step (6), the step Suddenly second level material is sent by conveyer belt into circular shale shaker in (8), is set right above the conveyer belt in the step (6), step (8) There is concentration equipment, the concentration equipment includes bracket, magnetic separation roller, motor, and the magnetic rotation roller is rotationally connected with by shaft The top of bracket, the motor are fixed on the top side of bracket, and the output shaft of the motor is connect with the shaft, the magnetic Roller bottom end is selected to be equipped with blow tank;Operation of the step (2) into (9) carries out in closing place.
Preferably, the recycled fine aggregate, regenerated coarse aggregate are used for environmental protection brick.
Preferably, mass percent of the recycled fine aggregate in environmental protection brick is 5~20%, and the regenerated coarse aggregate exists Mass percent in environmental protection brick is 40~70%.
Working principle:
Impact breaker is that building stones are crushed using kinetic energy, and the matter of kinetic energy possessed by every block of building stones and the block building stones It measures directly proportional.Therefore, during rubble, oversize rock material is largely crushed, but the building stones of smaller particle, certain Under the conditions of be not broken then.It is equipped with concentration equipment above conveyer belt, for removing the magnetisable material on conveyer belt in material.
The utility model has the advantages that
Through the broken aggregate of impact breaker close to cube, face crack is few, and elongated particles are few, uniformly more Preferably.Concentration equipment above conveyer belt can further remove the magnetisable material mixed in aggregate, further increase aggregate Purity.
Preferably, operation of the step (2) into (9) is carrying out in closing place.
The utility model has the advantages that avoiding dust diffusion, all kinds of environmental pollutions are effectively avoided, agree with the energy conservation and environmental protection political affairs of country's promotion Plan.
Preferably, the recycled fine aggregate, regenerated coarse aggregate are used for environmental protection brick.
Preferably, mass percent of the recycled fine aggregate in environmental protection brick is 5~20%, and the regenerated coarse aggregate exists Mass percent in environmental protection brick is 40~70%.
The working principle of the invention:
Building waste sorts, after screening through artificial, obtains the building waste of different-grain diameter.Lead to surface of material due to broken Some micro-cracks are generated, excessive micro-crack can not only reduce the hardness of material, but also the water absorption rate of material can be made to increase, and influence The utilization rate of recycled aggregate, the present invention carry out different degrees of break process for the building waste of different-grain diameter, effectively control The quantity of surface of material micro-crack.
Level-one material carries out two-stage crushing after hot-air seasoning, drying and processing can weaken remain in level-one material mortar with The bonding strength of aggregate facilitates mortar in subsequent shattering process and falls off from aggregate surface.
Impact breaker is that building stones are crushed using kinetic energy, and the matter of kinetic energy possessed by every block of building stones and the block building stones It measures directly proportional.Therefore, during rubble, oversize rock material is largely crushed.But the building stones of smaller particle, certain Under the conditions of be not broken then.
It is equipped with concentration equipment above conveyer belt, for removing the metal object on conveyer belt in material.
It is operated in closing place, avoids the diffusion of dust.
Beneficial effects of the present invention:
The higher same partial size model of uniformity coefficient can be obtained through different degrees of break process in the building waste of different-grain diameter Interior recycled aggregate, good separation effect are enclosed, division of labor operation saves human and material resources;Two-stage crushing is carried out after level-one drying materials, is protected The surface cleanliness of aggregate is demonstrate,proved;4th building waste is rinsed, influences the impurity of intensity to remove clay, mud etc..
Through the broken aggregate of impact breaker close to cube, face crack is few, and elongated particles are few, uniformly more Preferably.
Concentration equipment above conveyer belt can further remove the magnetisable material mixed in aggregate, further increase aggregate Purity.
It is operated in closing place, avoids the diffusion of dust.
Detailed description of the invention
Fig. 1 is the flow chart of the building waste treatment process in embodiment 1;
Fig. 2 is the schematic diagram of concentration equipment in building waste treatment process in embodiment 1.
1, conveyer belt;2, bracket;3, magnetic rotation roller;4, motor;5, shaft;6, blow tank.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation Example.
Embodiment 1
A kind of building waste treatment process, which comprises the following steps:
(1) artificial to sort: to be classified by the way of manually sorting to building waste, screen out in building waste mould for the first time Material, electric wire, glass, electric wire, fiber, reinforcing bar;
(2) level-one is sieved: the building waste after sorting is sieved using the sieve of 200mm, obtains partial size less than 200mm's First building waste, partial size are more than or equal to the second building waste of 200mm;
(3) level-one is broken: second building waste of the partial size more than or equal to 200mm is entered by feed bin after level-one is sieved Oscillating feeder;It is sent into jaw crusher and is crushed by oscillating feeder.Partial size is greater than after the screening of the first sieve after broken The first building waste of 200mm is crushed again, until the partial size of the first building waste is less than 200mm;
(4) magnetic separation: by after level-one is sieved partial size be the first building waste less than 200mm and the partial size after level-one is broken The level-one material of the second building waste composition less than 200mm, is sent into magnetic separator, removes iron, iron oxide, steel in level-one material Muscle;
(5) selection by winnowing: the level-one material after magnetic separation is sent into winnowing machine, removes remaining plastics, fiber in level-one material;
(6) it dries: the level-one material after selection by winnowing being put into baker by conveyer belt and is dried, 300 DEG C of operating temperature;
(7) two-stage crushing: the level-one material after drying being sent into impact breaker and is crushed, through the second sieve after being crushed It screens out level-one material of the partial size more than or equal to 40mm to be crushed again, until the partial size of the level-one material after all drying is small In 40mm, second level material is obtained;
(8) second level is sieved: second level material is sent into circular shale shaker by conveyer belt, screens out third of the partial size less than 5mm and builds 4th building waste of building refuse, 5~40mm;Third building waste of the partial size less than 5mm is recycled fine aggregate;
(9) rinse: by partial size be 5~40mm the 4th building waste rinse, remove impurity, filtered, dry after obtain Regenerated coarse aggregate.
Further, the level-one material after selection by winnowing is put into baker by conveyer belt, second level object in second level screening Material is sent by conveyer belt into circular shale shaker, and magnetic separation is equipped with right above the conveyer belt 1 in winnowing step, second level screening step and is filled It sets, concentration equipment includes bracket 2, magnetic separation roller 3, motor 4, and magnetic rotation roller 3 is rotationally connected with the top of bracket 2 by shaft 5 End, the motor 4 are fixed on the top side of bracket, and 3 bottom end of magnetic separation roller is equipped with blow tank 6.The transmission building of conveyer belt 1 During rubbish, concentration equipment rotates simultaneously, and the building waste on conveyer belt 1 is adsorbed on magnetic rotation by the magnetic force in concentration equipment 3 surface of roller, and magnetisable material is rotated to blow tank 6.
Further, the operation of step (2) to (9) carries out in closing place.
The working principle of the present embodiment:
By manual sort, the rubbish that large volume is not useable for recycled aggregate is rejected;By by building sieving garbage at Different-grain diameter carries out different degrees of fragmentation procedure according to different-grain diameter, reduces manpower labour, controls the micro- of recycled aggregate surface Crackle;Magnetic separator is further rejected after jaw crushing crusher machine, is mixed in reinforcing bar therein, iron, iron oxide.Reaction type is broken Machine is building stones to be crushed using kinetic energy, and kinetic energy possessed by every block of building stones is directly proportional to the quality of the block building stones.Therefore, broken During stone, oversize rock material is largely crushed, but the building stones of smaller particle, is not broken then under certain condition. During rubbish transports on the conveyor belt, concentration equipment rotates simultaneously, and the magnetic force in concentration equipment is by the rubbish on conveyer belt It is adsorbed on magnetic rotation cylinder surface, and magnetisable material is rotated to discharge port.
The present embodiment the utility model has the advantages that
Manual sort provides excellent condition for subsequent screening, crushing;Different-grain diameter carries out different pulverization process, reduces Labour cost improves the quality of recycled aggregate;Building rubbish further removes the impurity in rubbish through magnetic separation, selection by winnowing;Conveying The aggregate taken, is evenly distributed, and separates convenient for the magnetic separation of concentration equipment, ensure that the quality and effect of separation;Technological operation Cheng Zhong is carried out in closing place, is effectively avoided all kinds of environmental pollutions, agree with the energy conservation and environmental protection policy of country's promotion.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, drying temperature be 200 DEG C.
Embodiment 3
The present embodiment the difference from embodiment 1 is that, drying temperature be 400 DEG C.
Embodiment 4
The present embodiment the difference from embodiment 1 is that, drying temperature be 350 DEG C.
Embodiment 5
A kind of environmental protection brick, recycled fine aggregate and regenerated coarse aggregate prepared by Example 1 are main component, recycled aggregate brick Each mass component are as follows: 10 parts of recycled fine aggregate, 60 parts of regenerated coarse aggregate, 15 parts of cement, 10 parts of water, 2 parts of pigment, water-reducing agent 3 Part.
Its preparation process is as follows:
(1) it weighs: weighing 10 parts of recycled fine aggregate, 60 parts of regenerated coarse aggregate, 15 parts of cement, 10 parts of water, pigment 2 in proportion Part, 3 parts of water-reducing agent;
(2) primary stirring: recycled fine aggregate, regenerated coarse aggregate, cement, pigment are put into blender and are stirred, is made Uniform mixing;
(3) secondary agitation: being added water and water-reducing agent for mixture in step (2) while stirring, is again stirring for uniformly, obtaining Concrete material;
(4) die-filling: the concrete material in step (3) to be packed into mold, floating processing is made on concrete material surface;
(5) it suppresses: the molding die equipped with concrete material in step (4) being placed on press machine and is pressurizeed, Pressure maintaining 10min under 20MPa, obtains adobe;
(6) it conserves: adobe demoulding made from step (5) being handled, fog room is placed in and is conserved, curing temperature 70 DEG C, curing time for 24 hours, move to maintenance 3 days in room temperature fog room later, recycled aggregate brick be made.
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 modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (9)

1. a kind of building waste treatment process, which comprises the following steps:
(1) artificial to sort: to be classified by the way of manually sorting to building waste;
(2) level-one is sieved: the building waste after sorting is sieved into the first building waste, the second building waste with sieve, wherein Partial size of the partial size of first building waste less than the second building waste;
(3) level-one is broken: the second building waste after level-one is sieved enters oscillating feeder by feed bin;Second building waste It is sent into crusher A and is crushed by oscillating feeder, until all broken second building wastes pass through the first sieve; Wherein, the aperture of the first sieve is less than or equal to the partial size of the first building waste;
(4) magnetic separation: the first building waste after level-one is sieved and one through the broken second building waste composition of step (3) Grade material removes the metalliferous material in level-one material by magnetic separator;
(5) selection by winnowing: the level-one material after magnetic separation is sent into winnowing machine, removes plastics, fiber in level-one material;
(6) dry: will through step (5) treated that level-one material is put into baker dries;
(7) two-stage crushing: the level-one material after drying being sent into crusher B and is crushed, until all broken level-one materials By the second sieve, second level material is obtained;Aperture of the aperture of second sieve less than the first sieve;
(8) second level is sieved: second level material is sent into circular shale shaker, screens out third building waste, the 4th building waste, wherein the Partial size of the partial size of three building wastes less than the 4th building waste;Third building waste is recycled fine aggregate;
(9) rinse: by the 4th building waste rinse, remove impurity, filtered, dry after obtain regenerated coarse aggregate.
2. a kind of building waste treatment process according to claim 1, which is characterized in that sieve in the step (2) Aperture is 200mm, and the particle size range of first building waste is less than 200mm, and the particle size range of second building waste is big In or equal to 200mm;Circular shale shaker aperture is 5mm in the step (8), and the particle size range of third building waste is less than 5mm, The particle size range of 4th building waste is 5~40mm.
3. a kind of building waste treatment process according to claim 1, which is characterized in that second in the step (3) Building waste is broken through crusher A, is not crushed again by the second building waste of the first sieve after broken, until all the Two building wastes pass through the first sieve.
4. a kind of building waste treatment process according to claim 1, which is characterized in that baker in the step (6) Operating temperature be 200~400 DEG C.
5. a kind of building waste treatment process according to claim 1, which is characterized in that in the step (7), after being crushed It is not crushed again by the level-one material of the second sieve, until all level-one materials pass through the second sieve.
6. a kind of building waste treatment process according to claim 1, which is characterized in that broken in the step (3) Machine A is jaw crusher;Crusher B in the step (7) is impact breaker.
7. a kind of building waste treatment process according to claim 1, which is characterized in that will be through wind in the step (6) Level-one material after choosing is put into baker by conveyer belt, and second level material is sent to circle by conveyer belt and shaken in the step (8) In dynamic sieve, be equipped with concentration equipment right above the conveyer belt in the step (6), step (8), the concentration equipment include bracket, Magnetic separation roller, motor, the magnetic rotation roller are rotationally connected with the top of bracket by shaft, and the motor is fixed on cantilever tip Side, the output shaft of the motor connect with the shaft, and the bottom end of the magnetic separation roller is equipped with blow tank;The step (2) operation into (9) carries out in closing place.
8. using a kind of resulting recycled aggregate of building waste treatment process as described according to claim 1 any one of -7 Using, which is characterized in that the recycled fine aggregate, regenerated coarse aggregate are used for environmental protection brick.
9. a kind of application of resulting recycled aggregate of building waste treatment process according to claim 8, which is characterized in that Mass percent of the recycled fine aggregate in environmental protection brick is 5~20%, quality of the regenerated coarse aggregate in environmental protection brick Percentage is 40~70%.
CN201910174058.0A 2019-03-08 2019-03-08 A kind of application of building waste treatment process and gained recycled aggregate Pending CN109678378A (en)

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CN110357562A (en) * 2019-06-19 2019-10-22 北京首钢建设集团有限公司 Construction refuse resource processing method
CN111320407A (en) * 2020-04-16 2020-06-23 湖州恒通机械设备有限公司 Process for preparing recycled building material from building garbage
CN111359918A (en) * 2020-04-16 2020-07-03 湖州恒通机械设备有限公司 Construction waste treatment control system
CN111482256A (en) * 2020-04-16 2020-08-04 湖州恒通机械设备有限公司 Construction waste recycling process

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CN108176699A (en) * 2017-12-27 2018-06-19 新昌县隆豪轴承有限公司 A kind of construction refuse regenerated production technology
CN108623247A (en) * 2018-03-30 2018-10-09 广东怡兴食品有限公司 A kind of environmentally friendly seepage brick prepared by renewable material of building waste
CN109095826A (en) * 2018-09-26 2018-12-28 鸿翔环境产业有限公司 A kind of production method of construction garbage brick
CN108947291A (en) * 2018-09-28 2018-12-07 沿河土家族自治县乡建商品混凝土有限责任公司 It is a kind of to prepare recycled fine aggregate method using building waste

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110357562A (en) * 2019-06-19 2019-10-22 北京首钢建设集团有限公司 Construction refuse resource processing method
CN111320407A (en) * 2020-04-16 2020-06-23 湖州恒通机械设备有限公司 Process for preparing recycled building material from building garbage
CN111359918A (en) * 2020-04-16 2020-07-03 湖州恒通机械设备有限公司 Construction waste treatment control system
CN111482256A (en) * 2020-04-16 2020-08-04 湖州恒通机械设备有限公司 Construction waste recycling process

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