KR20030083663A - Method and apparatus for manufacturing a sand and stone using a construction waste matter - Google Patents

Method and apparatus for manufacturing a sand and stone using a construction waste matter Download PDF

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Publication number
KR20030083663A
KR20030083663A KR1020030069760A KR20030069760A KR20030083663A KR 20030083663 A KR20030083663 A KR 20030083663A KR 1020030069760 A KR1020030069760 A KR 1020030069760A KR 20030069760 A KR20030069760 A KR 20030069760A KR 20030083663 A KR20030083663 A KR 20030083663A
Authority
KR
South Korea
Prior art keywords
aggregate
concrete
mortar
sand
paste
Prior art date
Application number
KR1020030069760A
Other languages
Korean (ko)
Inventor
기준호
기형호
Original Assignee
삼영플랜트주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼영플랜트주식회사 filed Critical 삼영플랜트주식회사
Priority to KR1020030069760A priority Critical patent/KR20030083663A/en
Publication of KR20030083663A publication Critical patent/KR20030083663A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY 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
    • B07BSEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY 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
    • B07B13/04Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/58Construction or demolition [C&D] waste

Abstract

A method for producing recycled aggregate and sand from which cement paste and mortar have been removed from waste concrete which makes it possible to remove cement paste and mortar so that waste concrete of construction waste can be used as recycled aggregate and sand for ready-mixed concrete. And to an apparatus. The method for producing recycled aggregate and sand according to the present invention is to remove the foreign matter and crushing step (100) of crushing the waste concrete 200 to a certain size and to remove foreign substances, and supplying the crushed concrete to the first impact crusher (110) Removing the concrete paste and the mortar 202 between the aggregate surface and the irregularities by radially discharging by the rotational force of the rotor and colliding with the anvil, and the concrete debris from which the concrete paste and the mortar 202 has been removed is vibrated. The step of sorting into a predetermined size of sand and aggregate 201 by feeding in, supplying the selected aggregate 201 to the second impact crusher 112 and discharged radially by the rotational force of the rotor to hit the anvil aggregate surface And removing the concrete paste and the mortar 202 again between the unevenness, and the concrete from which the concrete paste or the mortar was removed secondarily. Injecting the crushed object into the vibration sorter 113 comprises the step of sorting the sand and aggregate of a predetermined size. Such a method and apparatus enables the use of concrete and sand for ready-mixed concrete by completely removing cement paste or mortar 202 adhered to a certain size (eg, 5 to 25 mm) aggregate surface from the concrete mass of construction waste. . Accordingly, it is possible to reduce the waste of resources by reducing the use of raw stones collected from quarries, and to prevent environmental pollution and reuse of construction wastes.

Description

Method and apparatus for producing recycled aggregate and sand from which cement paste and mortar have been removed from construction wastes {Method and apparatus for manufacturing a sand and stone using a construction waste matter}

The present invention relates to a method for producing recycled aggregates and sand for ready-mixed concrete having cement paste and mortar removed from waste concrete of construction wastes, and more specifically, to be used as waste aggregates from waste concrete of construction wastes. The present invention relates to a method and apparatus for producing regenerated aggregate and sand from which cement paste (paste) and mortar (attached) adhered between irregularities of aggregates subjected to selection and debris removal processes are removed.

Generally, a large amount of various construction wastes are discharged from old buildings, and construction wastes are recycled to prevent shortage of landfills and illegal dumping.

Cement paste and cement mortar are not removed from the recycled aggregate and sand, which is recycled by a general apparatus for producing recycled aggregate and sand, and is attached between surfaces and irregularities. Such cement paste and mortar-attached recycled aggregates and sands are unsuitable for use as aggregates and sands for ready-mixed concrete, and are usually used for simple landfill or cover soil auxiliary layers. Therefore, ready-mixed concrete aggregates and sand are produced by crushing raw stones (原 石) taken from Seoksan (石山). As a result, resources are wasted and the environment is rapidly being destroyed.

It is an object of the present invention to provide a method and apparatus for producing recycled aggregates and sand from which cement paste and mortar have been removed from waste concrete to be used as aggregates and sand for ready-mixed concrete.

1 is a view schematically showing the aggregate production process,

2 is a cross-sectional view showing an impact crusher,

3 is a flowchart for explaining the method and apparatus of the present invention.

<Description of the code | symbol about the principal part of drawing>

110 ... first impact crusher 112 ... second impact crusher

200 ... Waste Concrete 201 ... Aggregate

202 ... cement paste or mortar

The present invention to achieve the above object is a method for producing recycled aggregates and sand by removing the cement paste and mortar attached to the aggregate surface of the waste concrete, the waste concrete is shredded to the size available as a concrete concrete and wood, styrofoam Removing foreign material and crushing to remove foreign matters such as, and removing the concrete paste and mortar from the aggregate surface by impact and vibration by supplying the crushed concrete to the first impact crusher by impact due to centrifugal force, and the step Injecting the concrete crushed concrete and the mortar removed in the vibrating screen to sort the sand and aggregate of a certain size, and supplying the aggregate selected in the step to the second impact crusher to impact the secondary by the centrifugal force impact Concrete face again from aggregate surface by vibration and vibration And removing mitneun mortar, put into the two-paste concrete and concrete mortar is removed the debris away to vibration sorting machines characterized in that it comprises the step of selecting a predetermined size of the sand and recycled aggregates.

The present invention to achieve the above object in the apparatus for producing recycled aggregate and sand by removing cement paste and mortar from the aggregate surface of the waste concrete, the waste concrete is shredded to the size that can be used as a concrete aggregate and wood, styrofoam A crushing and debris removing unit for removing foreign substances such as foreign matters, a first impact crusher for removing the concrete paste and mortar from the aggregate surface by impact and vibration by colliding the crushed concrete with the external fixing plate by centrifugal force, and the concrete paste And a first vibrating separator for sorting the concrete debris from which mortar has been removed with a predetermined size of sand and aggregates, and imparting the selected aggregates to the external fixing plate by centrifugal force so that the concrete pastes and mortars can be recovered from the aggregate surface by impact and vibration. 2nd impact to remove And a second vibrator for sorting the concrete debris from which the second concrete paste and the mortar are removed by sand and aggregate of a predetermined size.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a method for producing recycled aggregates and sand by removing cement paste and mortar adhering between aggregate surfaces of waste concrete as construction waste and molten iron of aggregates. Referring to Figures 1 to 3, the method for producing recycled aggregate and sand in the present invention is to crush the waste concrete 200 to the size usable as aggregates for ready-mix concrete and to remove foreign matters and to remove foreign substances such as wood, styrofoam Step 100 and supplying the crushed concrete to the first impact crusher 110 to remove the concrete paste and mortar 202 from the aggregate surface by impact and vibration in the impact by centrifugal force, in the step The concrete paste and the mortar 202 is removed, the concrete crushed material is put into the vibrating separator 111 to screen the sand and aggregate 201 of a predetermined size, and the aggregate 201 selected in the step of the second impact crusher (112) to remove the concrete paste and mortar (202) from the surface of the aggregate 201 again by impact and vibration in a second centrifugal force impact; By putting the concrete paste and concrete mortar is removed the debris second drive group in vibration sorter 113 includes the step of selecting as sand and aggregate of a predetermined size.

1 and 3, in the foreign material removal and shredding step 100, firstly, the construction waste introduced through the hopper is removed from the soil through the primary screening 101, and has a predetermined size through the first shredding 102. After crushing to remove the soil that has not been removed through the secondary screening (103).

Subsequently, foreign matters such as wood, scirofoam, etc. are sorted out from the first crushed crushed material and secondly crushed 105, and then the surface of the aggregate 201 and the unevenness of the aggregate 201 by impact and vibration are passed through the first impact crusher 110. The cement paste and mortar 202 stuck in between are removed.

In this process, aggregate powder (stone powder), sand, cement paste, and mortar 202 and aggregate 201 that are separated from the surface and unevenness of the aggregate 201 are introduced into the first vibrating separator 111 and sand of about 5 mm or less. Screening, and the aggregate 201 or more of 5mm is put into the second impact crusher 112 again.

The aggregate 201 introduced into the second impact crusher 112 removes the cement paste and mortar 202 that are not dropped from the first impact crusher 110 by the impact and vibration caused by the centrifugal force.

As such, the cement paste and mortar 202 adhered between the surface of the aggregate 201 and the unevenness via the two impact crushers 110 and 112 are completely removed.

In this process, aggregate powder (stone powder), sand, cement paste, mortar 202 and aggregates separated from the surface and unevenness of the aggregate 201 are put into the second vibrating separator 113 to produce sand of 5 mm or less. More than 5mm is produced from recycled aggregate.

On the other hand, the apparatus for producing recycled aggregate and sand by removing the cement paste and mortar between the aggregate surface of the waste concrete of the present invention and the irregularities of the aggregate has the following configuration.

First, as shown in FIG. 1, the apparatus of the present invention primarily shreds 102 to a predetermined size from the waste concrete 200 in which the aggregate 201 and the cement mortar 202 were cured together, and the first shredding 102. After the second crushed 105 to a smaller size, the crushed cement paste and mortar 202 attached between the surface and the unevenness of the aggregate 201 through the first and second impact crusher Remove it completely.

Referring to FIG. 2, the impact crushers 110 and 112 are discharged radially by the rotational force of the rotor 303 when a crushed object is introduced through a central portion of the rotor 303 which rotates together with the rotating shaft 302 which rotates at a high speed. While the crushed material collides with the anvil 301 of the outer fixing plate or the crushed material collides with each other to allow the cement paste and mortar 202 stuck between the surface of the aggregate 201 and the unevenness to fall off.

1 and 3, the present invention, the waste concrete 200 is broken into a size that can be used as a ready-mixed concrete aggregate and foreign matter removal and crushing unit 100 to remove foreign substances such as wood, styrofoam, and The first impact crusher 110 which removes the concrete paste and mortar 202 from the surface of the aggregate 201 by colliding with the anvil 301 of the external fixing plate while the crushed concrete is discharged radially by the rotational force of the rotor 303. ), The first vibrating separator 111 for separating the concrete crushed material from which the concrete paste and the mortar 202 are removed into a predetermined size of sand and aggregate, and the selected aggregate in a radial direction by the rotational force of the rotor 303. The second impact crusher 112 and the second impact crusher 112 to remove the concrete paste and mortar 202 again from the surface of the aggregate 201 by colliding with the anvil 301 of the external fixing plate while being discharged to And a second vibrating separator 113 for sorting the concrete crushed material from which the concrete paste and the mortar 202 are removed into sand and aggregate of a predetermined size.

The foreign matter removal and shredding unit 100 is the construction waste put through the hopper is removed through the primary sorter 101, the soil is removed, the primary shredder 102 is crushed to a certain size and then the secondary sorter (103) Remove the soil that has not been removed through.

Subsequently, foreign matters such as wood and styrofoam are sorted out from the first crushed crushed material and secondly crushed by the crusher 105.

In this way, when the crushed material broken into about 5 to 25 mm is passed through the first impact crusher 110, the cement paste and mortar 202 stuck between the surface of the aggregate 201 and the unevenness are removed.

In this process, aggregate powder (stone powder), sand, cement paste, and mortar 202 and aggregate 201 that are separated between the surface and the unevenness of the aggregate 201 are introduced into the first vibrating separator 111 to be less than about 5 mm. The sand is sorted out, and the aggregate 201 or more of 5 mm is introduced into the second impact crusher 112 again.

The aggregate 201 injected into the second impact crusher 112 is discharged radially by the rotational force of the rotor 303 and hit the anvil 301 so that the cement paste and the mortar 202 that are not dropped from the first impact crusher 110. ) Is removed.

As such, the cement paste and mortar 202 adhered between the surface of the aggregate 201 and the unevenness via the two impact crushers 110 and 112 are completely removed.

In this process, aggregate powder (stone powder), sand, cement paste, mortar 202 and aggregates separated from the surface and unevenness of the aggregate 201 are put into the second vibrating separator 113 to produce sand of 5 mm or less. More than 5mm is produced from recycled aggregate.

In the above embodiment, the impact crusher is peeled and polished twice through the impact crusher to remove the cement paste and the mortar from the aggregate. Nevertheless, if the cement paste and the mortar are not removed, the impact crusher may be passed through another impact crusher.

Such a method and apparatus are completely removed from the concrete mass, which is the construction waste, to remove the cement paste and mortar 202 between the aggregate surface and the irregularities of the aggregate. Enable use. Accordingly, it is possible to reduce the waste of resources by reducing the use of raw stones collected from quarries, and to prevent environmental pollution and reuse of construction wastes.

Claims (2)

  1. In the method for producing recycled aggregate and sand by removing cement paste and mortar from the aggregate surface of the waste concrete,
    A crushing step of crushing the waste concrete into a predetermined size;
    Supplying the crushed concrete to the first impact crusher to impinge the aggregate discharged by the rotational force of the rotor on the anvil fixed to the outside of the rotor to remove concrete paste and mortar between the aggregate surface and irregularities;
    Inputting the crushed aggregate, concrete paste, mortar into the vibrating separator in the step of sorting the sand and aggregate of a predetermined size;
    Supplying the aggregate selected in the step to the second impact crusher to impinge the aggregate discharged by the rotational force of the rotor to the anvil fixed to the outside of the rotor to remove the concrete paste and mortar again between the aggregate surface and irregularities,
    In this step, the aggregates, concrete paste and mortar crushed in the step of the vibrating sifter to produce a recycled aggregate and sand from which the cement paste or mortar is removed from the waste concrete, characterized in that it comprises the step of sorting into a certain size of sand and aggregate. How to.
  2. In the apparatus for producing recycled aggregate and sand by removing cement paste and mortar from the aggregate surface of the waste concrete,
    A crushing and debris removing unit for crushing the waste concrete to a certain size and removing debris;
    A first impact crusher having a rotor to which the crushed concrete is supplied and rotated, and an anvil in which the concrete discharged radially due to the rotational force of the rotor collides to remove concrete paste and mortar between the aggregate surface and the unevenness;
    A first vibrating separator for sorting the aggregate, concrete paste and mortar crushed by the first impact crusher into sand and aggregate having a predetermined size;
    A second impact crusher having the rotor supplied with the selected aggregate and rotating, and an anvil in which the concrete discharged radially by the rotational force of the rotor collides to remove concrete paste or mortar between the aggregate surface and the unevenness;
    Apparatus for producing recycled aggregate and sand from which cement paste and mortar are removed from the waste concrete, characterized in that it comprises a second vibrating separator for sorting the secondary crushed aggregate, concrete paste and mortar into a certain size of sand and aggregate. .
KR1020030069760A 2003-10-04 2003-10-04 Method and apparatus for manufacturing a sand and stone using a construction waste matter KR20030083663A (en)

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KR100603969B1 (en) * 2006-04-13 2006-07-25 대금환경개발 주식회사 Vertical type impact mill for waste concrete crush
KR100869188B1 (en) * 2007-10-12 2008-11-18 계대영 Method of making fine particles using recycling concrete
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