KR20030063758A - Apparatus for separating rejuvenating aggregate from construction waste articles - Google Patents

Apparatus for separating rejuvenating aggregate from construction waste articles Download PDF

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Publication number
KR20030063758A
KR20030063758A KR1020020004037A KR20020004037A KR20030063758A KR 20030063758 A KR20030063758 A KR 20030063758A KR 1020020004037 A KR1020020004037 A KR 1020020004037A KR 20020004037 A KR20020004037 A KR 20020004037A KR 20030063758 A KR20030063758 A KR 20030063758A
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South Korea
Prior art keywords
aggregate
sorting
aggregates
soil
waste
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KR1020020004037A
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Korean (ko)
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KR100436545B1 (en
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구경신
구재일
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구경신
구재일
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Priority to KR10-2002-0004037A priority Critical patent/KR100436545B1/en
Publication of KR20030063758A publication Critical patent/KR20030063758A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02Combinations of similar or different apparatus for separating solids from solids using gas currents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48Stretching devices for screens
    • B07B1/49Stretching devices for screens stretching more than one screen or screen section by the same or different stretching means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14Details or accessories
    • B07B13/16Feed or discharge arrangements

Abstract

PURPOSE: Apparatus for selecting reclaimed aggregates in constructional waste is provided to separate aggregates and soil powders from the aggregates by inter-frictional movement between the aggregates having different particle sizes. CONSTITUTION: The apparatus comprises several selection screens(10); and a selection housing(20) equipped with an inlet(25) for introducing aggregates and a blow duct(40) at top portion, an outlet(30) for discharging aggregates on side wall and another outlet(35) for discharging soil powders. The multiple screens(10) are inclined and installed in the housing(20) by one or more stages. Each of the inlet(25), the outlet(30) and the other outlet(35) has a dust prevention membrane(45). The selection screen(10) is vibrated by a vibrational motor.

Description

건설폐기물에서의 재생골재 선별장치{APPARATUS FOR SEPARATING REJUVENATING AGGREGATE FROM CONSTRUCTION WASTE ARTICLES}Recycled aggregate sorting device in construction wastes {APPARATUS FOR SEPARATING REJUVENATING AGGREGATE FROM CONSTRUCTION WASTE ARTICLES}

본 발명은 건설폐기물에서의 재생골재 선별장치에 관한 것으로, 보다 상세하게는 경사를 가지면서 각기 다른 크기의 선별공을 가진 다단의 선별스크린을 진동시키면서 송풍덕트를 통하여 외부공기를 불어넣어, 각기 다른 입도를 가진 골재 및 골재들 간의 상호마찰로 인해 떨어져 나오는 토분을 효과적으로 분리하는 재생골재 선별장치에 관한 것이다.The present invention relates to an apparatus for sorting recycled aggregate from construction waste, and more specifically, to blow external air through a blower duct while vibrating a multi-stage sorting screen having a sorting hole having a different size while having a slope. The present invention relates to a recycled aggregate sorting device that effectively separates soil particles falling off due to mutual friction between aggregates and aggregates having a particle size.

도시화 및 산업화의 진행과정에서 생겨난 많은 구조물, 즉 교량이나 도로 및 각종 건축물들은 세월이 지남에 따라 점차 노후되어 가고 있으며, 특히 최근에는 주거문화의 개선을 위해 많은 지역에서 재건축 및 재개발이 활발하게 추진되고 있다. 이러한 노후 구조물의 해체나 재건축 및 재개발이 추진되는 과정에서 많은 건설폐기물이 발생된다.Many structures, such as bridges, roads, and other buildings, which have been created in the process of urbanization and industrialization, are gradually aging over the years, and in recent years, reconstruction and redevelopment has been actively promoted in many regions to improve the living culture. have. Many construction wastes are generated in the process of dismantling, reconstruction and redevelopment of old structures.

이러한 건설폐기물을 그대로 매립할 경우에는 매립지의 확보가 힘들 뿐만 아니라 매립비용이 많이 들며, 환경에도 심각한 영향을 미치므로 각국에서는 자연환경의 보호와 함께 자원의 재활용이라는 두 가지 측면에서 건설폐기물을 처리하기 위한 갖가지 대책들이 강구되어 왔으며, 우리나라의 경우에도 건설폐기물에 대한 많은 처리장치가 개발되고 있는 실정이다.If landfills are used as landfills, landfills are difficult to secure, landfill costs are high, and they have a serious impact on the environment. Therefore, each country has to deal with construction wastes in two aspects: to protect the natural environment and to recycle resources. Various countermeasures have been taken, and in Korea, many treatment devices for construction waste have been developed.

건설현장에서 발생되는 폐기물의 종류에는 토분이나 폐콘크리트, 폐목재류와 같은 건설폐기물과, 폐유나 폐페인트와 같은 지정폐기물과 폐가전제품과 같은 사업장 일반폐기물이 있다.The types of wastes generated at construction sites include construction wastes such as soil, waste concrete, and waste wood, and designated wastes such as waste oil and waste paints, and general wastes such as home appliances.

건설폐기물은 다시, 토분을 비롯하여, 폐콘크리트, 폐아스팔트, 폐벽돌, 폐타일, 폐석재, 폐블록 등이 포함되는 건설폐재류와, 폐목재류를 비롯하여, 폐합성수지류, 철근과 같은 금속류, 폐종이류, 폐유리류, 오니류, 폐섬유류, 소각 잔재물 등이 포함되는 혼합폐재류로 나눌 수 있다.The construction wastes are again divided into soils, construction wastes including waste concrete, waste asphalt, waste bricks, waste tiles, waste stone, waste blocks, waste woods, waste synthetic resins, metals such as rebar, waste Paper, waste glass, sludge, waste fibers, incineration residues, etc. can be divided into mixed waste.

이와 같이 다양한 폐재류가 혼재되어 있는 건설폐기물은 처리과정을 통해서 매립용, 소각용 및 재활용 용도로 분리 처리하게 되며, 특히 근년에는 폐기물량의 상당한 양을 차지하는 건설폐재류를 각종 구조물 또는 건축재의 골재로 사용할 수 있도록 재생함으로써 폐기물의 재활용도를 높이고자 하는 방안이 강구되고 있다.As such, construction wastes containing various wastes are separated into landfills, incinerators, and recycling through treatment. In order to improve the recycling of wastes by recycling them for use, they have been devised.

종래 건설폐재류의 처리과정을 살펴보면, 호퍼로 유입된 건설폐재류는 죠크라샤에 의해서 파쇄한 후, 선별스크린(10)을 거치면서 토분을 분리한 다음, 자선기에 의해 철재류의 분리 및 송풍처리 등을 거쳐 건설폐재류를 수조탱크로 보내 탱크내의 물을 이용하여 골재를 쓰레기와 분리 세척하는 작업이 행해진다.Looking at the conventional process of the construction wastes, construction wastes introduced into the hopper is crushed by the jaw crusher, the soil is separated through the sorting screen (10), and then the separation and blowing treatment of steels by charity The construction wastes are sent to the tank tank through which the aggregates are separated and washed by using the water in the tanks.

여기서, 상기 선별스크린(10)은 투입된 폐기물을 크기별로 분류하는 것으로 일정한 간격을 두고 격자형태의 메시망 구조를 갖거나, 다수의 선별공(15)이 형성된 구조로 이루어지며, 미도시된 진동모터에 의해 진동되어 폐기물이 이송되는 과정에서 상기 선별스크린(10)의 하측으로 선별될 수 있도록 되어 있다.Here, the sorting screen 10 is to classify the input waste by size to have a mesh network structure of a grid form at regular intervals, or a plurality of sorting holes (15) formed, a vibration motor not shown Vibration is to be sorted to the lower side of the sorting screen 10 in the process of transporting the waste.

그러나, 상기한 과정 중, 파쇄된 폐재류로부터 선별스크린(10)을 통해 골재를 재생함에 있어, 선별스크린(10)의 진동만으로는 폐재류에 혼재되어 있거나 골재에 묻어있는 토분 등이 제대로 분리 선별되지 않는 문제점이 있었다.However, in the above process, in regenerating aggregate from the crushed waste through the sorting screen 10, the vibration of the sorting screen 10 alone is not properly separated and sorted in the soil mixed in the waste or aggregates in the aggregate. There was a problem.

그리고, 별도의 송풍처리 과정을 거치는 경우에는 비산먼지로 인하여 또 다른 환경오염을 불러일으켰고, 또한 선별과정을 마친 후 수조탱크에 골재를 투입하여 세척하는 경우에는 폐기물에 포함되어 있는 토분에 의해 수조탱크 내에 과다한 오니가 발생하게 되므로, 이들을 처리하기 위하여 수조탱크의 용량이 불필요하게 커지거나 고가의 응집제를 다량 사용함으로써 시설의 유지관리상 부담이 따르게 되는 문제점이 있었다.In addition, in the case of a separate blowing treatment process, it caused another environmental pollution due to scattering dust.In addition, when the aggregate is put into the tank tank and washed after finishing the sorting process, the tank tank is made of soil contained in the waste. Since excessive sludge is generated in the inside, there is a problem that the burden of maintenance of the facility is accompanied by unnecessarily increasing the capacity of the tank tank or using a large amount of expensive flocculant to treat them.

본 발명은 상기와 같은 문제점들을 해소하기 위해 안출된 것으로서, 건설폐기물의 재활용을 위하여 골재와 토분을 분리시켜 선별하는 과정에서, 선별하우징 내에서 경사를 가지면서 진동하는 선별스크린에 송풍덕트를 통해 외부공기를 강하게 공급하므로써 골재와 토분을 보다 효과적으로 분리 선별될 수 있도록 함과 동시에 먼지의 비산을 최소화 시키므로써 환경 친화적인 작업환경을 제공하는데 그 목적이 있다.The present invention has been made in order to solve the above problems, in the process of separating and sorting aggregate and soil for the recycling of construction waste, the outside through the ventilation duct to the sorting screen having a slope in the sorting housing The purpose is to provide an environment-friendly working environment by minimizing the scattering of aggregates and at the same time by separating the aggregate and soil more effectively by the strong supply of air.

도 1은 본 발명의 실시예에 따른 재생골재 선별장치를 일부 분해한 개략적인 사시도,1 is a schematic perspective view partially disassembled recycled aggregate sorting apparatus according to an embodiment of the present invention,

도 2는 도 1의 내부구조를 개략적으로 보인 단면도.2 is a cross-sectional view schematically showing the internal structure of FIG.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: 선별스크린 15: 선별공10: sorting screen 15: sorter

20: 선별하우징 25: 골재투입구20: Screening housing 25: Aggregate inlet

30: 골재배출구 35: 토분배출구30: aggregate discharge outlet 35: soil discharge outlet

40: 송풍덕트 45: 먼지차단막40: blowing duct 45: dust barrier

50: 골재이송벨트 55: 토분이송벨트50: aggregate transfer belt 55: soil transfer belt

60: 골재투입이송벨트60: aggregate feed belt

상기와 같은 목적을 달성하기 위한 본 발명은, 선별공을 통해 정해진 입도의 골재를 분리하는 선별스크린을 골재 선별과정에서 발생하는 비산먼지가 차단되도록 선별하우징내에 다단으로 배치하여 진동시키고, 상기 선별하우징의 상부에 형성된 송풍덕트를 통해 유입된 외부공기를 상기 선별스크린을 향하여 강하게 불어넣어 선별공의 입도에 따라 골재와 토분을 각각 선별토록함을 특징으로 한다.The present invention for achieving the above object, by vibrating the sorting screen to separate the aggregate of a predetermined particle size through the sorting hole in the multi-stage in the sorting housing to block the scattering dust generated during the aggregate sorting process, the sorting housing The external air introduced through the air blowing duct formed in the upper part of the screen is screened strongly so as to sift aggregate and soil according to the particle size of the screen.

이하, 첨부한 도면을 참조하여 본 발명에 따른 재생골재 선별장치에 대하여상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the recycled aggregate sorting apparatus according to the present invention.

도 1은 본 발명의 실시예에 따른 재생골재 선별장치를 일부 분해한 개략적인 사시도이고, 도 2는 도 1의 내부구조를 개략적으로 보인 단면도이다.1 is a schematic perspective view partially disassembled recycled aggregate sorting apparatus according to an embodiment of the present invention, Figure 2 is a schematic cross-sectional view showing the internal structure of FIG.

도면에 도시된 바와 같이, 본 발명은 골재의 분리 선별과정에서 비산되는 먼지가 유출되지 않도록 각기 다른 크기의 선별공(15)을 갖는 선별스크린(10)들이 선별하우징(20)내에 경사지게 다단으로 설치되어 있으며, 상기 선별하우징(20)의 상부에는 도시되지 않은 외부 블로워와 연통된 송풍덕트(40)와 함께 골재가 투입되는 골재투입구(25)가 형성되어 있고, 그 하부 개방단부는 토분배출구(35)로 되어 토사나 토분이 토분이송벨트(55)에 낙하되어 배출되도록 되어 있다.As shown in the figure, the present invention is installed in multiple stages inclined in the sorting housing 20, the sorting screen 10 having the sorting holes 15 of different sizes so that dust scattered during the separate sorting process of the aggregate is not spilled. The upper part of the sorting housing 20 is formed with an aggregate inlet 25 into which aggregate is introduced together with a blower duct 40 communicating with an external blower (not shown), and the lower open end of the sorting housing 20 Soil and earth powder fall to the earth powder conveyance belt 55, and are discharged | emitted.

또한, 상기 선별스크린(10)의 경사진 하단부위는 선별하우징(20)의 측벽에 형성된 골재배출구(30)의 외부로 돌설되어 골재이송벨트(50)와 연결되도록 되어있다.In addition, the inclined lower end portion of the sorting screen 10 is protruded to the outside of the aggregate discharge port 30 formed on the side wall of the sorting housing 20 is to be connected to the aggregate transport belt (50).

본 발명에 따른 실시예에서는 선별스크린(10)이 3단으로 되어 있으나 그 개수는 작업조건에 따라 적절하게 조정될 수 있으며 선별스크린(10)의 선별공(15) 입도는 하단으로 내려갈수록 적어지도록 되어 있다.In the embodiment according to the present invention, the screening screen 10 has three stages, but the number can be adjusted according to the working conditions and the screen size of the screening hole 15 of the screening screen 10 is to be lowered toward the bottom have.

또한, 상기 선별하우징(20)에 형성된 골재투입구(25)와, 골재배출구(30) 및 토분이 배출되는 토분배출구(35)에는 각기 비산되는 먼지가 쉽게 유출되지 않도록 먼지차단막(45)이 구비되어 있으며, 이러한 먼지차단막(45)은 유연성이 있는 재질로 함이 바람직하다.In addition, the aggregate inlet 25 formed in the sorting housing 20, the aggregate discharge port 30 and the soil discharge outlet 35 through which the dust is discharged are provided with a dust barrier membrane 45 so that the dust scattered from each other is not easily spilled. In addition, the dust barrier layer 45 is preferably made of a flexible material.

이상과 같이 구성된 본 발명은, 골재투입이송벨트(60)에서 낙하된 골재가 골재투입구(25)로 투입되면 먼지차단막(45)을 거쳐 상단의 경사진 선별스크린(10)상에 재치된다.In the present invention configured as described above, when the aggregate dropped from the aggregate injection belt 60 is introduced into the aggregate inlet 25, the aggregate is placed on the inclined sorting screen 10 through the dust barrier 45.

이와 같이 선별스크린(10)에 재치된 골재는 진동모터(미도시)에 의해 진동되면서 서로 부딪히게 되므로 골재 상호간의 마찰에 의해 골재에 묻어있는 토분이 골재로부터 탈리되게 되는 것으로 이러한 탈리과정은 골재들이 그 하부에 설치된 다단의 선별스크린(10)들을 차례로 거치면서 반복 수행되며, 이와 같이 탈리된 토분은 송풍덕트(40)로부터 강하게 유입되는 하향기류에 의해 선별하우징(20)의 하부 개방단부인 토분배출구(35)로 낙하되어 토분이송벨트(55)에 적재된 후 외부로 배출 이송된다.As such, the aggregates placed on the sorting screen 10 are bumped together by vibrating motors (not shown), so that the soils on the aggregates are detached from the aggregates by friction between the aggregates. Repeatedly performed while passing through the multi-stage sorting screen (10) installed in the lower portion in turn, the soil separation is removed by the air flow down the air flow inlet duct 40, the bottom of the soil discharge outlet of the sorting housing 20 Dropped to 35 and loaded on the soil conveyance belt 55 is discharged to the outside.

이때, 토분이 분리된 골재들은 각기 다른 선별공(15)을 가진 선별스크린(10)들을 거치면서 각기 다른 입도를 가진 골재별로 구분되어 골재배출구(30)로 배출된 후 골재이송벨트(50)에 적재 이송되는 한편 최하단의 선별공(15)보다 입도가 작은 토사들은 토분과 함께 하부 개방단부인 토분배출구(35)로 낙하되어 토분이송벨트(55)에 의해 외부로 이송된다.At this time, the separated soil is divided into aggregates having different particle sizes while passing through the sorting screens 10 having different sorting holes 15 and then discharged to the aggregate discharge port 30 to the aggregate transport belt 50. On the other hand, the earth and sand having a smaller particle size than the lowermost sorting hole 15 are dropped to the soil discharge port 35, which is the lower open end, together with the soil, and transported to the outside by the soil transfer belt 55.

또한, 본 발명은 선별하우징(20)에 형성된 골재투입구(25)와 골재배출구(30), 그리고 토분이 배출되는 하부 개방단부인 토분배출구(35)에 각기 먼지차단막(45)이 설치되어 있어 골재와 토분의 분리 선별작업시 비산되는 먼지가 외부로 쉽게 누출되지 않도록 되어있다.In addition, the present invention is the aggregate inlet 25 and the aggregate discharge port 30 formed in the sorting housing 20, and the dust barrier membrane 45 is respectively installed in the soil discharge outlet 35 which is the lower open end where the soil is discharged, aggregate The dust scattered during separation and separation of soil is not easily leaked to the outside.

상기한 바와 같이 본 발명은 건설폐기물의 재활용을 위하여 골재와 토분을 분리시켜 선별하는 과정에서, 선별하우징내에서 경사를 가지는 다단의 선별스크린을 진동시키면서 송풍덕트를 통해 외부공기를 강하게 공급하므로써 재생골재로부터 토분을 효과적으로 분리 선별하게 되어 골재의 청정도를 제고시킬 뿐 아니라 작업현장에서 먼지의 비산을 최소화하므로써 환경 친화적인 작업환경을 제공하게 되는 것이다.As described above, the present invention recycles aggregate by strongly supplying external air through a blower duct while vibrating a multi-stage sorting screen having a slope in the sorting housing in the process of separating and classifying aggregate and soil for recycling of construction waste. By effectively separating and sorting the soil from the soil, it improves the cleanliness of the aggregate and provides an environment-friendly working environment by minimizing the scattering of dust at the work site.

Claims (3)

건설폐기물에서 정해진 입도의 골재를 선별스크린(10)에 의해 선별 분리함에 있어서, 상부에는 골재투입구(25)와 함께 송풍덕트(40)가 형성되고 측벽에는 골재배출구(30), 그리고 하부 개방단부에는 토분배출구(35)가 형성된 선별하우징(20)내에 일개단 또는 그 이상으로 선별스크린(10)을 경사지게 설치함을 특징으로 하는 건설폐기물에서의 재생골재 선별장치.In sorting and separating the aggregate having a predetermined particle size from the construction waste by the screening screen 10, an air blowing duct 40 is formed along with the aggregate inlet 25 at the upper side, and the aggregate discharge port 30 at the side wall, and at the lower open end. An apparatus for sorting recycled aggregates from construction waste, characterized in that the sorting screen (10) is inclined at one or more ends in the sorting housing (20) in which the soil discharge outlet (35) is formed. 제 1항에 있어서,The method of claim 1, 상기 골재투입구(25)와 골재배출구(30) 및 토분배출구(35)에는 각기 먼지차단막(45)을 설치함을 특징으로 하는 건설폐기물에서의 재생골재 선별장치.The aggregate input port 25, the aggregate discharge port 30 and the soil discharge outlet 35, respectively, dust recycling membrane 45, characterized in that the installed aggregate recycling apparatus for construction waste. 제 1항에 있어서,The method of claim 1, 상기 선별스크린(10)은 진동모터에 의하여 진동됨을 특징으로 하는 건설폐기물에서의 재생골재 선별장치.The sorting screen 10 is recycled aggregate sorting device in the construction waste, characterized in that the vibration by vibrating motor.
KR10-2002-0004037A 2002-01-24 2002-01-24 Apparatus for separating rejuvenating aggregate from construction waste articles KR100436545B1 (en)

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KR100703028B1 (en) * 2006-11-16 2007-04-03 (주)한동재생공사 The apparatus which iscontained in aggregate waste
KR100894621B1 (en) * 2007-05-28 2009-04-24 춘천교육대학교산학협력단 Separation Apparatus used Module
US9789491B2 (en) 2013-03-28 2017-10-17 Kolonglotech. Inc Sorting method and apparatus for recycling filler included in artificial turf
US10052638B2 (en) 2013-03-28 2018-08-21 Kolonglotech, Inc Sorting method and apparatus for recycling filler included in artificial turf
KR101427849B1 (en) * 2013-12-10 2014-08-07 광일토건환경 주식회사 Apparatus for construction waste treatment using air and method of constructioin waste treatment
WO2017094954A1 (en) * 2015-11-30 2017-06-08 태양산업주식회사 Crushing system capable of crushing aggregate and collecting same according to particle
KR101872486B1 (en) * 2017-02-13 2018-06-28 김종복 Separate device for recycling aggregate of vertical type using the multiple screen
KR20210022218A (en) * 2019-08-19 2021-03-03 주식회사 포스코 Apparatus for milling powder
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