KR20170082668A - Crushing apparatus for producing recycled agregate from waste concrete and recycling method using the same - Google Patents

Crushing apparatus for producing recycled agregate from waste concrete and recycling method using the same Download PDF

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Publication number
KR20170082668A
KR20170082668A KR1020160001345A KR20160001345A KR20170082668A KR 20170082668 A KR20170082668 A KR 20170082668A KR 1020160001345 A KR1020160001345 A KR 1020160001345A KR 20160001345 A KR20160001345 A KR 20160001345A KR 20170082668 A KR20170082668 A KR 20170082668A
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South Korea
Prior art keywords
waste concrete
conveyor belt
partition
roller mill
concrete
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Application number
KR1020160001345A
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Korean (ko)
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KR101816678B1 (en
Inventor
신희영
지상우
고재영
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한국지질자원연구원
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Priority to KR1020160001345A priority Critical patent/KR101816678B1/en
Publication of KR20170082668A publication Critical patent/KR20170082668A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
    • B65G69/0425—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials with vibrating or shaking means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/02—Codes relating to disintegrating devices adapted for specific materials for reinforced concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
    • B65G2207/14—Combination of conveyors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The present invention provides a waste concrete crushing apparatus and a method of recycling waste concrete using the apparatus. The pulverized concrete pulverizing apparatus according to the present invention transports waste concrete along a conveyor belt so that the waste concrete forms a thin monolayer and flows into the roller mill. Through this, the ratio of the long diameter and the radius of the pulverized waste concrete is formed within a certain range, so that the efficiency and economical efficiency of pulverization can be improved and the recovery rate of pulverized concrete can be improved by lowering the production rate of fine powder.

Description

TECHNICAL FIELD The present invention relates to a waste concrete pulverizing apparatus for producing recycled aggregate and a waste concrete recycling method using the waste concrete pulverizing apparatus for recycled aggregate production. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to recycled concrete used in construction and civil engineering fields, and more particularly, to a pulverizing apparatus and a waste concrete recycling method for producing recycled aggregate from waste concrete.

The total amount of domestic construction waste generated in 2012 is about 6.8 million tons, accounting for 50% of total waste. In December 2003, the government enacted the "Act on the Promotion of Recycling of Construction Waste" in order to appropriately treat construction waste and promote recycling, thereby promoting efficient use of national resources. At the same time, we introduced "recycled aggregate quality standard" and "recycled aggregate quality certification system". Also, in order to promote the use of recycled aggregate, it is compulsory to use recycled aggregate, such as recycled aggregate, to compulsory construction work on a certain scale or more ordered by the state, local governments, public institutions and public corporations. However, despite the government and local governments, the utilization rate of recycled aggregate is still in the running. There are a variety of reasons, but from a technical standpoint, the quality of recycled aggregate is a problem.

Recycled aggregate is produced by crushing construction waste such as waste concrete, which is divided into coarse aggregate (gravel) and recycled fine aggregate (particle size of 5 to 10 mm or less). In the case of recycled fine aggregate, the quality is guaranteed above a certain level. However, in the case of the recycled coarse aggregate, the cement adhered to the surface can not be completely removed. As a result, both the strength and the adhesion force are lower than those of the ordinary aggregate. Therefore, recycled aggregate producers mainly focus on the production of circulating fine aggregate.

As shown in the conventional process chart of FIG. 1, the process for producing circulated fine aggregate is a process of pulverizing and granulating waste concrete by using a plurality of crushing apparatuses and screens to make the particle size below the reference particle size. The grinding is carried out continuously, repetitively without performing at once. Naturally, improving the grinding efficiency is the most important technical issue.

Conventionally, the crushing of the waste concrete is performed using a jaw crusher and a cone crusher as shown in FIGS. 2 and 3. However, the shape of the aggregate obtained by pulverization using the conventional crusher was various. What is particularly problematic is the difference between the long and short diameters of the aggregate. For example, the short diameter is formed to be equal to or smaller than the reference particle size, but the case where the long diameter exceeds the reference particle size is the most problematic. A screen is installed at the bottom of the crusher. When the aggregate is positioned in the direction of the short axis, it passes without being caught on the screen. As a result, some aggregates that do not satisfy the grain size criteria are produced. Conventional producers used to crush the aggregate through the screen again. Another problem with repetition of such grinding is that a significant amount of the aggregate is undifferentiated and can not be used as an aggregate.

The above-mentioned phenomenon causes the pulverization process to be repeated and the recycling rate of the raw material is lowered, resulting in a decrease in the utilization rate of the waste concrete and the competitiveness of the recycled aggregate producer.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a waste concrete pulverizing apparatus capable of improving the reliability of particle separation and improving the efficiency of the pulverization process after the aggregate is pulverized have.

It is another object of the present invention to provide a waste concrete recycling method which can produce recycled aggregate economically and efficiently by using the waste concrete grinding apparatus.

On the other hand, other unspecified purposes of the present invention will be further considered within the scope of the following detailed description and easily deduced from the effects thereof.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a waste concrete pulverizing apparatus and a waste concrete recycling method using the apparatus.

The present invention provides a waste concrete pulverizing apparatus comprising: a roller mill having a pair of rollers spaced apart from each other with a gap therebetween, the pair of rollers being rotated in opposite directions so as to crush waste concrete flowing into the gap; A conveyor belt for conveying the waste concrete to the clearance of the roller mill; And a partition formed on the conveyor belt to form a slot between the waste concrete and the conveyor belt so that the waste concrete can be made thinner than a certain thickness and introduced into the roller mill.

According to the present invention, a plurality of the partition are provided along the conveying direction of the conveyor belt, and the slots formed by the partition gradually decrease in height along the conveying direction of the conveyor belt. For example, the height of the slot formed by the partition closest to the roller mill is in the range of 20-30 mm.

Particularly, according to an embodiment of the present invention, the partition is disposed in the first partition to the fourth partition along the conveying direction of the conveyor belt, and the height of the slots formed by the first partition to the fourth partition are sequentially 150 to 250 mm, 150 to 75 mm, 75 to 35 mm, and 35 to 15 mm.

In one embodiment of the present invention, a pair of rollers of the roller mill move along mutually approaching and spacing directions to adjust the width of the gap between the pair of rollers. For example, the clearance of the roller mill can be adjusted within a range of 1 to 10 mm.

In addition, according to another embodiment of the present invention, the conveyor belt is capable of vibrating along at least one of a vertical direction and a lateral direction.

In particular, a plurality of the conveyor belts are provided, and the plurality of conveyor belts are alternately formed in the lateral direction and the vertical direction alternately.

In an embodiment of the present invention, it is preferable that a blocking wall is provided on both sides of the conveyor belt so that the waste concrete does not flow out.

In the meantime, the waste concrete recycling method according to the present invention is for producing recycled aggregate by pulverizing and granulating the waste concrete. The waste concrete is pulverized through a plurality of pulverizing processes, and in at least one pulverizing process, It is characterized by using a crushing device.

The pulverized concrete pulverizing apparatus according to the present invention has an advantage that the particle size can be precisely controlled at the time of pulverizing waste concrete.

Above all, since the ratio of the long diameter to the short diameter of the pulverized product is within a certain range, it is possible to improve the reliability deterioration of the particle separation due to the difference in the short end length when using the conventional jaw crusher and cone crusher. In addition, since pulverization is not repeated, there is an advantage that formation of fine powder can be suppressed.

Regeneration of the waste concrete using the above-described pulverizing apparatus can reduce the energy consumption rate and improve the production yield of the recycled aggregate from the raw material.

On the other hand, even if the effects are not explicitly mentioned here, the effect described in the following specification, which is expected by the technical features of the present invention, and its potential effects are treated as described in the specification of the present invention.

1 is a schematic process diagram for regenerating the existing waste concrete of FIG. 1; FIG.
2 is a schematic view for explaining a conventional jaw crusher.
3 is a schematic view for explaining a conventional cone crusher.
4 is a schematic process diagram of a waste concrete reclamation method according to an embodiment of the present invention.
5 is a view for explaining a technical concept of a waste concrete crushing apparatus according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

The present invention relates to a method for producing recycled aggregate (or recycled aggregate) by regenerating various kinds of construction waste and a waste concrete grinding apparatus used in the method.

In the present invention, the pulverization and regeneration of waste concrete is an important subject to be treated. However, the present invention is not limited thereto and applicable to various types of construction / civil engineering waste such as cement, ascon, and mortar cured products. Furthermore, the waste concrete crushing apparatus according to the present invention can be applied to all crushing objects even if it is not a construction waste.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

4 is a schematic process diagram of a waste concrete reclamation method according to an embodiment of the present invention.

Referring to FIG. 4, after the waste concrete is supplied through a hopper or a feeder, the waste concrete is subjected to a first crushing process using a crusher or a cone crusher. The screen is installed at the bottom of the jaw crusher or cone crusher. Although the primary grinding process is shown very simply in the figure, this is for convenience of explanation, The crushing process can be performed continuously, repeatedly, such as crushing, screening, magnetic force separation and particle size separation as shown in the conventional process chart of FIG. For example, pulverization is repeatedly performed until the particle size of the pulverized waste concrete becomes about 25 mm, and the work of separating the reinforcing bars is accompanied. However, detailed description of these primary pulverization processes can be variously changed, so that detailed explanation is omitted.

When the particle size of the waste concrete is less than the reference value (ex: 25 mm), the second crushing process is performed. In the second crushing process, the waste concrete crushing device according to the present invention is used.

The waste concrete crushing apparatus according to the present invention will be described in detail with reference to FIG.

5 is a view for explaining a technical concept of a waste concrete crushing apparatus according to an embodiment of the present invention.

5, the waste concrete crushing apparatus 100 includes a roller mill 10, conveyor belts 21, 22, 23, and 24, a partition 31, 32, 33, and 34, and a blocking wall.

The roller mill 10 is made up of a pair of rollers 11 and 12. The pair of rollers 11 and 12 are arranged in parallel with a slight gap d and rotated in mutually opposite directions. That is, the first roller 11 is rotated counterclockwise and the second roller 12 is rotated clockwise. The waste concrete c conveyed through a conveyor belt to be described later is introduced into the clearance d between the rollers 11 and 12 and pressed between the rollers 11 and 12 to be crushed. The roller mill 10 used in this embodiment can horizontally move the rollers 11 and 12 to adjust the gap (clearance) between the gaps d. The particle size of the waste concrete after the crushing is determined by the width of the clearance d of the roller mill 10, and the clearance in this embodiment is set in the range of 1 to 10 mm. By adjusting the clearance according to the desired particle size, pulverized concrete of various sizes (recycled aggregate) can be obtained. A screen (19) is provided under the roller mill (10) to perform particle size separation on the pulverized product.

Since the cone crusher and the jaw crusher crush an object in a striking manner as shown in Figs. 2 and 3, the roller mill 10 is a type in which an object is pressed and crushed between two rotating rollers, There are many differences. That is, the cone crusher and the jaw crusher can not control the particle size at the time of crushing. After crushing by blowing, it is necessary to filter out large-sized objects by the lower screen. However, the roller mill is basically characterized in that the particle size can be controlled by the clearance (d) between the rollers.

Although the roller mill is easier to control the grain size than the impact type crushers, a special configuration is further required for controlling the ratio of the short diameter as described in the prior art. When the crusher of the conventional striking type is used, the ratio of the long diameter to the short diameter of the ground product is often not within a certain range. The short diameter satisfies the granularity standard, and when the long diameter is larger than the granularity standard, the pulverized material can pass through the screen in the short diameter direction. The particle separation can not be reliably performed, and as a result, the pulverized material that has passed through the screen is re-pulverized, resulting in not only a reduction in the pulverization efficiency but also a lot of fine pulverization due to the repeated pulverization.

In the present invention, the ratio of the major axis to the minor axis of the pulverized product is kept within a certain range while using the roller mill. The fact that the ratio of the shortest diameter is within a certain range means that the pulverized material has a shape similar to a sphere or a square. If the long and short diameters do not largely differ from each other, it is possible to overcome the limitations in the prior art when separating the granules.

In order to adjust the ratio of the length to the length of the mill using a roller mill, the object should be spread into the roller mill, forming a thin layer rather than being stacked. To this end, the present invention comprises conveyor belts (21, 22, 23, 24) and partitions (31, 32, 33, 34).

The conveyor belt is for conveying the waste concrete supplied from the hopper 90 to the roller mill 10. Although one belt may be used, a plurality of conveyor belts 21, 22, 23, and 24 are used in this embodiment. Each of the conveyor belts comprises a pair of pulleys 27, 28 spaced apart from each other and rotated in the same direction, and a belt 29 surrounding the pulleys 27, 28.

Partitions 31, 32, 33 and 34 are provided one on top of each conveyor belt 21, 22, 23 and 24. The partition is formed in a plate-like shape and spaced apart from the upper surface of the conveyor belt to form slots (s1, s2, s3, s4) between the conveyor belt and the conveyor belt. The partition slashes the upper part of the waste concrete (c) supplied in the form of a tortoise so that the waste concrete spreads widely and thinly. When the waste concrete is supplied from the hopper 90, the waste concrete is stacked in the form of a bundle as indicated by c1 in FIG. 5, and then transported on the conveyor belt. The waste concrete pile c1 reaches the first partition 31 and is caught by the partition 31. After passing through the first partition 32 as the upper part is shaved, the height of the waste concrete pile c1 becomes lower as indicated by c2. Likewise, waste concrete passes through the divisions denoted by 32 to 34 and gradually becomes thinner and wider to form c2, c3, and c4. Finally, a thin layer is formed and introduced into the roller mill 10. When such a thin layer is formed, two effects are produced when the waste concrete is continuously supplied to the roller mill 10 in a fixed amount.

One is that the entire milling zone (between the rollers) of the roller mill participates in milling, thereby increasing the grinding efficiency per hour of the roller mill. And the other is that the difference between the long diameter and the short diameter of the ground product is not large. This is due to the laminar flow and the pressing force of the roller is evenly received in the whole area of the waste concrete as compared with the case where the waste concrete is supplied to the bunge trough as the waste concrete is supplied.

In the present invention, the height of the slots gradually decreases along the conveying direction of the conveyor belt. That is, the slot s1 formed by the first partition 31 disposed in the first place is in the range of 150 to 250 mm, the second slot s2 formed by the second partition 32 is 150 to 75 mm, the third partition 33 The third slot s3 formed by the fourth partition 34 can be formed in the range of 75 to 35 mm and the fourth slot s40 formed by the fourth partition 34 can be formed in the range of 35 to 15 mm. The waste concrete c4 finally flowing into the roller mill 10 forms a thin layer of 25 mm.

In order to prevent the waste concrete from flowing out to both sides of the conveyor belt when the upper portion of the waste concrete pile is cut off by the partition, blocking walls (not shown) may be provided on both sides of the conveyor belt.

On the other hand, in the present invention, a plurality of conveyor belts are successively provided to enhance the dispersing effect of waste concrete. In the aspect of waste concrete conveyance, it is more effective to use a single conveyor belt. However, in this embodiment, vibrations of different directions are applied to each conveyor belt to induce waste concrete to be dispersed widely.

That is, in this embodiment, the conveyor belts 21, 22, 23 and 24 are provided with vibrating means (not shown). In the first arranged conveyor belt 21, vibrations occur in the left and right directions, and vertical vibration occurs in the second arranged conveyor belts 22. That is, the direction of vibration alternately changes according to the conveyor belt. By applying the vibration, the waste concrete above the conveyor belt can be widely dispersed.

The scope of protection of the present invention is not limited to the description and the expression of the embodiments explicitly described in the foregoing. It is again to be understood that the present invention is not limited by the modifications or substitutions that are obvious to those skilled in the art.

100: Waste concrete crushing device
10: roller mill, 11,12: roller, 19: screen
21, 22, 23, 24: conveyor belt, 27: pulley, 28: belt
31, 32, 33, 34: partition, C: waste concrete

Claims (11)

A roller mill having a pair of rollers spaced apart from each other with a gap therebetween, the pair of rollers being rotated in opposite directions to crush waste concrete flowing into the gap;
A conveyor belt for conveying the waste concrete to the clearance of the roller mill; And
And a partition formed on the conveyor belt to form a slot between the waste concrete and the conveyor belt so that the waste concrete can be slit down to a predetermined thickness or less and flow into the roller mill. . The method according to claim 1,
A plurality of partitioning walls are provided along the conveying direction of the conveyor belt,
Wherein the slot formed by the partition is gradually reduced in height along the conveying direction of the conveyor belt. 3. The method of claim 2,
Wherein the height of the slot formed by the partition closest to the roller mill is in the range of 20 to 30 mm. 3. The method of claim 2,
Wherein the partition is disposed in a first partition to a fourth partition along the conveying direction of the conveyor belt,
Wherein a height of the slots formed by the first partition to the fourth partition is sequentially in a range of 150 to 250 mm, 150 to 75 mm, 75 to 35 mm, and 35 to 15 mm. The method according to claim 1,
Wherein a pair of rollers of the roller mill move along mutually approaching and spacing directions to adjust the width of the clearance between the pair of rollers. The method according to claim 1,
And the clearance of the roller mill is in the range of 1 to 10 mm. The method according to claim 1,
Wherein the conveyor belt is oscillated along at least one of a vertical direction and a lateral direction. 8. The method of claim 7,
Wherein a plurality of the conveyor belts are provided and are continuously connected to each other. 9. The method of claim 8,
Wherein the plurality of conveyor belts oscillate in a lateral direction and a vertical direction alternately. The method according to claim 1,
Wherein a blocking wall is provided on both sides of the conveyor belt to prevent the waste concrete from flowing out. A method for producing recycled aggregate by pulverizing and separating waste concrete,
The waste concrete recycling method according to any one of claims 1 to 10, wherein the waste concrete is pulverized through a plurality of pulverizing processes, and at least one pulverizing process is used.
KR1020160001345A 2016-01-06 2016-01-06 Crushing apparatus for producing recycled agregate from waste concrete and recycling method using the same KR101816678B1 (en)

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* Cited by examiner, † Cited by third party
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EP3613713A1 (en) * 2018-08-21 2020-02-26 KHD Humboldt Wedag GmbH Process for the preparation of an aggregate for concrete
CN112138759A (en) * 2020-08-11 2020-12-29 南昌航空大学 Renewable concrete building solid waste separation device
CN112138822A (en) * 2020-07-25 2020-12-29 上海宇华环卫清洁有限公司 Garbage disposal device
CN112691725A (en) * 2020-12-07 2021-04-23 柯贤利 Comprehensive utilization method for recycling building solid waste

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CN111792313B (en) * 2020-06-30 2022-06-17 上海山美环保装备股份有限公司 Diversified overlap joint combination of building rubbish treatment is equipped

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Publication number Priority date Publication date Assignee Title
KR200284249Y1 (en) * 2002-04-15 2002-08-10 구경신 The conveyor apparatus for separating aggregate with wind from construction waste articles
KR100552351B1 (en) * 2005-09-14 2006-02-21 유은미 Fines eliminator for recycled coarse aggregate
KR101563125B1 (en) * 2015-05-21 2015-10-26 민원 The particle size distribution adjustable construction waste sorting equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3613713A1 (en) * 2018-08-21 2020-02-26 KHD Humboldt Wedag GmbH Process for the preparation of an aggregate for concrete
CN112138822A (en) * 2020-07-25 2020-12-29 上海宇华环卫清洁有限公司 Garbage disposal device
CN112138822B (en) * 2020-07-25 2022-06-10 上海宇华环卫清洁有限公司 Garbage disposal device
CN112138759A (en) * 2020-08-11 2020-12-29 南昌航空大学 Renewable concrete building solid waste separation device
CN112691725A (en) * 2020-12-07 2021-04-23 柯贤利 Comprehensive utilization method for recycling building solid waste

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