JP2538484B2 - Method for preparing aggregate from concrete and asphalt waste - Google Patents
Method for preparing aggregate from concrete and asphalt wasteInfo
- Publication number
- JP2538484B2 JP2538484B2 JP13181892A JP13181892A JP2538484B2 JP 2538484 B2 JP2538484 B2 JP 2538484B2 JP 13181892 A JP13181892 A JP 13181892A JP 13181892 A JP13181892 A JP 13181892A JP 2538484 B2 JP2538484 B2 JP 2538484B2
- Authority
- JP
- Japan
- Prior art keywords
- crushed
- supplied
- crushed material
- raw material
- less
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000002699 waste material Substances 0.000 title claims description 28
- 239000010426 asphalt Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims description 62
- 239000002994 raw material Substances 0.000 claims description 33
- 238000007873 sieving Methods 0.000 claims description 27
- 239000004568 cement Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 5
- 230000002950 deficient Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明はコンクリート及びアス
ファルト廃棄物からの骨材の調製法に係り、その目的は
建設物を取壊した際に出るコンクリートの破片やその他
廃棄すべきコンクリート固型化物（以下コンクリート廃
棄物と称す）更には道路を改修する際に生じるアスファ
ルト廃棄物等から骨材を回収し、資源の有効利用を計る
コンクリート及びアスファルト廃棄物からの骨材の調製
法の提供にある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preparing aggregate from concrete and asphalt waste, and its purpose is to provide concrete fragments produced when a building is demolished and other concrete solidified products to be discarded (hereinafter Furthermore, it is to provide aggregates from the asphalt waste generated when roads are rehabilitated, and to provide a method for preparing aggregates from the concrete and asphalt wastes to effectively use resources.
【０００２】[0002]
【従来の技術】従来、コンクリートやアスファルト廃棄
物はそのまま埋立処分されることが多い。しかしなが
ら、産業廃棄物であるコンクリート廃棄物やアスファル
ト廃棄物は近年その廃棄場所がなく問題となっている。
一方、自然保護、環境保全の観点から、川砂や山砂（岩
石粉砕物）の採集は限定され、細骨材としての砂が涸渇
している。そこで、近年ではコンクリート廃棄物から、
鉄筋などの異物を取り除いて４０ｍｍ以下に破砕し、道
路の基礎部分等に敷き詰める砕石として利用することも
試みに行われている。2. Description of the Related Art Conventionally, concrete and asphalt waste are often landfilled as they are. However, industrial waste such as concrete waste and asphalt waste has become a problem because there is no place to dispose of them in recent years.
On the other hand, from the viewpoint of nature conservation and environmental protection, collection of river sand and mountain sand (crushed rocks) is limited, and the sand as fine aggregate is depleted. So, in recent years, from concrete waste,
It has also been attempted to remove foreign matter such as rebar and crush it to a size of 40 mm or less and use it as crushed stone to be laid on the foundation of a road.
【０００３】[0003]
【発明が解決しようとする課題】コンクリート廃棄物を
粉砕し、粒度を揃えて砕石としての利用する方法や利用
量はまだ少なく、コンクリートの廃棄物の多くは無駄に
埋立処分されていた。ところが、今般、コンクリートや
アスファルト廃棄物の埋立や廃棄処分は、処分地の確保
が東京、大阪等の大都市を中心として段々難しくなって
きている。加えて、前記東京、大阪等の大都市では、建
設物の老朽化が目立ってきており、高度利用化も伴い、
約５％程度の建設物が解体されており、この建設物を解
体した時に大量のコンクリート廃棄物が出てしまい、一
層廃棄処分地を確保することが難しくなってきている。
一方、良質の細骨材となる砂は自然保護、環境保全の観
点から採取が制限され不足しがちで海砂は含有塩分がコ
ンクリート劣化をもたらすため使用は制限されている。The method of crushing concrete waste and utilizing it as crushed stones with a uniform particle size and the amount used are still small, and most of the waste of concrete has been wastefully landfilled. However, for landfilling and disposal of concrete and asphalt waste, it has become increasingly difficult to secure land for disposal mainly in large cities such as Tokyo and Osaka. In addition, in large cities such as Tokyo and Osaka, constructions are becoming obsolete, and due to advanced utilization,
About 5% of the construction is dismantled, and when this construction is dismantled, a large amount of concrete waste is generated, making it even more difficult to secure land for disposal.
On the other hand, sand, which is a fine aggregate, tends to be limited in quantity from the viewpoints of nature conservation and environmental protection, and sea sand is limited in use because the salt content causes concrete deterioration.
【０００４】この発明は上記事情に照らしてなされたも
ので、これまで無駄に捨てられていたコンクリートやア
スファルト廃棄物の有効利用を計ることができるか否か
を検討する過程でなされたものである。コンクリートや
アスファルト廃棄物を粉砕して分級しても、通常はその
まま細骨材として利用できない問題点があった。The present invention has been made in light of the above circumstances, and was made in the process of examining whether or not it is possible to effectively utilize the waste of concrete and asphalt that had been wastefully discarded until now. . Even if concrete or asphalt waste is crushed and classified, there is a problem that it cannot be used as it is as fine aggregate.
【０００５】コンクリート廃材には、鉄筋等の金属が含
まれているとともに、コンクリートの配合材として、砂
利、砂、セメントが含まれている。このようなコンクリ
ート廃材の粉砕物をそのままコンクリートの骨材として
使用すると、含まれているセメント分は本来強アルカリ
性で、コンクリートの硬化後、空気中の炭酸ガスや亜硫
酸ガスが雨水に溶けた酸性雨と反応してコンクリート中
で塩が形成され、強度低下等のコンクリート劣化をもた
らしてしまう虞があった。また、アスファルト廃材は通
常アスファルトが、砕石が６０％程度、砂分が３０％、
ピッチ分が６％程度含有されて構成されており、略同様
の組成となっている。このような組成のアスファルト廃
材を粉砕して分級すると、その配合から細骨材は表面に
必ずピッチの薄膜を被膜しており、このピッチ分がコン
クリート用細骨材として使用した場合には、油分が混在
し物理的性状や美観を損ね、望ましい細骨材ではなかっ
た。[0005] The waste concrete material contains metal such as rebar and also contains gravel, sand and cement as a concrete compounding material. If such a crushed material of concrete waste is used as it is as aggregate of concrete, the cement content contained is originally strong alkaline, and after the hardening of concrete, acid rain that carbon dioxide gas and sulfurous acid gas in the air are dissolved in rainwater There is a risk that salt will be formed in the concrete by reacting with, resulting in deterioration of the concrete such as reduction in strength. Waste asphalt is usually asphalt, crushed stone is about 60%, sand content is 30%,
About 6% of the pitch is contained, and the composition is almost the same. When asphalt waste material with such a composition is crushed and classified, the fine aggregate has a coating of a thin film of pitch on the surface due to its composition, and when this pitch is used as fine aggregate for concrete, oil content However, it was not a desirable fine aggregate because it had mixed physical properties and aesthetics.
【０００６】[0006]
【課題を解決するための手段】即ちこの発明は、コンク
リート及びアスファルト廃棄物を原料受入設備に収納
し、この原料受入設備の下端放出口には切出設備を設
け、この切出設備から切出しされた原料を第一のふるい
設備に供給し、３０ｍｍを超える骨材調製可能原料と０
−３０ｍｍの不良原料とに分別し、一方切出設備を通過
できなかった原料を第一の破砕装置に供給して８０ｍｍ
以下に破砕し、この８０ｍｍ以下に破砕した破砕物を第
二のふるい設備に供給し、この第二のふるい設備により
０〜３０ｍｍの破砕物と３０ｍｍを越える破砕物とに分
別し、前記骨材調製可能原料と第二のふるい設備から出
てくる３０ｍｍ以上の破砕物を第二の破砕装置に供給し
て再破砕し、この再破砕した破砕物を再度第二のふるい
設備に供給し、この第二のふるい設備から出てくる０〜
３０ｍｍの破砕物をゴミ除去装置に供給し、木、紙屑等
を除去した後、この０〜３０ｍｍの破砕物を第三のふる
い設備に供給して０〜４ｍｍの破砕物と４ｍｍを越える
破砕物とに分別し、この４ｍｍを越える破砕物を第三の
破砕装置に供給して４ｍｍ以下に破砕するとともに破砕
物に被膜したピッチ等を除去し、この４ｍｍ以下に破砕
した破砕物を第一の分級設備に供給し、０．０７４ｍｍ
未満のセメント分の微粉末を分別して０．０７４ｍｍ〜
４ｍｍの破砕物を再度第三のふるい設備に供給し、この
第三のふるい設備から出てくる４ｍｍ以下の破砕物を第
二の分級設備に供給し、０．０７４ｍｍ未満のセメント
分の微粉末を分別して０．０７４〜４ｍｍの骨材として
回収することを特徴とするコンクリート及びアスファル
ト廃棄物からの骨材の調製法を提供することにより前記
従来の欠点を悉く解消した。That is, according to the present invention, concrete and asphalt waste are stored in a raw material receiving facility, a cutting facility is provided at a lower end discharge port of the raw material receiving facility, and the raw material is cut out from the cutting facility. The raw material is supplied to the No. 1 sieving equipment, and the raw material capable of preparing aggregates exceeding 30 mm and 0
-80 mm after separating the raw material that could not pass through the cutting equipment into the first crushing device
The crushed material is crushed into the following, and the crushed material crushed to 80 mm or less is supplied to a second sieving equipment, and the second sieving equipment separates the crushed material into 0 to 30 mm crushed material and the crushed material exceeding 30 mm to obtain the aggregate. The raw material which can be prepared and the crushed material of 30 mm or more coming out from the second sieving equipment are supplied to the second crushing apparatus to be re-crushed, and the re-crushed crushed material is again supplied to the second sieving equipment. 0 from the second sieving equipment
The crushed material of 30 mm is supplied to the dust removing device to remove wood, paper scraps, etc., and the crushed material of 0 to 30 mm is supplied to the third sieving equipment to crushed material of 0 to 4 mm and crushed material exceeding 4 mm. The crushed material exceeding 4 mm is fed to a third crushing device to crush it to 4 mm or less and the pitch etc. coated on the crushed material is removed, and the crushed material crushed to 4 mm or less is Supply to classification equipment, 0.074 mm
Fine powder of cement content less than 0.074 mm
The crushed material of 4 mm is supplied again to the third sieving equipment, and the crushed material of 4 mm or less coming out of the third sieving equipment is supplied to the second classification equipment, and the cement content of less than 0.074 mm is finely divided. The above-mentioned conventional drawbacks have been solved by providing a method for preparing aggregates from concrete and asphalt waste, which is characterized in that the powder is fractionated and recovered as aggregates of 0.074 to 4 mm.
【０００７】[0007]
【実施例】以下、この発明によるコンクリート及びアス
ファルト廃棄物から骨材の調製法について図面を参照し
ながら具体的に説明する。図１と図２はこの発明に係る
骨材の調製法の一実施例を示すものであって、原料（１
０）には、コンクリート廃棄物及びアスファルト廃棄物
を用いる。この原料（１０）はホッパー（１）に収納さ
れる。ホッパー（１）の下端放出口には切出設備（２）
を設けている。切出設備（２）として本実施例ではグリ
ズリーフィーダー（商品名）を使用し、原料（１０）を
所定量ずつ連続的に切出しする。切出設備（２）から切
出しされた０〜６０ｍｍの原料（１０）は搬送装置
（３）を介して第一のスクリーン（４）に供給され、３
０ｍｍを超える骨材調製可能原料（１０）と０−３０ｍ
ｍの不良原料（１６）とに分別する。なお、０−３０ｍ
ｍの原料が不良原料であるのは、土が多く含まれており
骨材として使用できないためである。搬送装置（３）は
ベルトコンベア等の任意の装置を使用する。The method for preparing aggregate from concrete and asphalt waste according to the present invention will be specifically described below with reference to the drawings. 1 and 2 show an embodiment of the method for preparing an aggregate according to the present invention.
For 0), concrete waste and asphalt waste are used. This raw material (10) is stored in the hopper (1). Cutting equipment (2) at the bottom discharge port of the hopper (1)
Is provided. In this embodiment, a grizzly feeder (trade name) is used as the cutting equipment (2), and the raw material (10) is continuously cut out by a predetermined amount. The raw material (10) of 0 to 60 mm cut out from the cutting equipment (2) is supplied to the first screen (4) via the transfer device (3), and 3
Raw material (10) capable of preparing aggregate exceeding 0 mm and 0-30 m
m defective raw material (16). In addition, 0-30m
The reason why the raw material of m is a bad raw material is that it contains a lot of soil.
This is because it cannot be used as an aggregate. The conveyor device (3) uses an arbitrary device such as a belt conveyor.
【０００８】一方、切出設備（２）を通過できなかった
原料（１０）は第一の破砕装置（７）に供給される。第
一の破砕装置（７）は切出設備（２）を通過できなかっ
た原料（１０）を細かく砕いて８０ｍｍ以下とするもの
で、本実施例ではジョークラッシャー（商品名）を使用
している。第一の破砕装置（７）から出てくる破砕物
は、搬送装置（３）を介して第二のスクリーン（５）に
供給され、０〜３０ｍｍの破砕物と３０ｍｍを越える破
砕物とに分別する。On the other hand, the raw material (10) which could not pass through the cutting facility (2) is supplied to the first crushing device (7). The first crushing device (7) finely crushes the raw material (10) that could not pass through the cutting facility (2) to 80 mm or less. In this embodiment, a jaw crusher (trade name) is used. . The crushed material coming out of the first crushing apparatus (7) is supplied to the second screen (5) via the conveying apparatus (3) and is separated into crushed material of 0 to 30 mm and crushed material of more than 30 mm. To do.
【０００９】第一のスクリーン（４）から出てくる３０
ｍｍを越える原料と、第二のスクリーン（５）から出て
くる３０ｍｍを越える破砕物は、搬送装置（３）を介し
て第二の破砕装置（８）に供給する。第二の破砕装置
（８）は、破砕物を更に細かく砕くもので、本実施例で
はインペラーブレーカー（商品名）を使用している。第
二の破砕装置（８）から出てくる再破砕物は、搬送装置
（３）を介して第二のスクリーン（５）に戻す。第二の
スクリーン（５）から出てくる０〜３０ｍｍの破砕物
は、搬送装置（３）を介してゴミ除去装置（１４）に供
給される。このゴミ除去装置（１４）には水力選別装置
を使用し、この水力選別装置で、木、紙屑等を除去した
後、この木、紙屑等を除去した破砕物は、第三のスクリ
ーン（６）に供給され、０〜４ｍｍの破砕物と４ｍｍを
越える破砕物とに分別する。４ｍｍを越える破砕物は、
搬送装置（３）を介して第三の破砕装置（９）に供給す
る。第三の破砕装置（９）は４ｍｍを越える破砕物を更
に細かく砕いて０〜４ｍｍに破砕するとともに破砕物に
被膜したピッチ等を除去するもので、本実施例ではスー
パーサンダー（商品名）を使用している。第三の破砕装
置（９）から出てくる破砕物は、第一の分級装置（１
１）でふるい分けし、０．０７４ｍｍ未満のセメント分
の微粉末を分別して０．０７４〜４ｍｍのものを搬送装
置（３）を介して第三のスクリーン（６）に戻す。第三
のスクリーン（６）から出てくる０〜４ｍｍ以下の破砕
物を第二の分級装置（１２）に供給し、０．０７４ｍｍ
未満のセメント分の微粉末を分別して０．０７４〜４ｍ
ｍのものを骨材（１３）として回収する。30 coming out of the first screen (4)
The raw material having a size of more than mm and the crushed material having a size of more than 30 mm coming out from the second screen (5) are supplied to the second crushing device (8) via the conveying device (3). The second crushing device (8) is for further crushing the crushed material, and in this embodiment, an impeller breaker (trade name) is used. The re-crushed material coming out of the second crushing device (8) is returned to the second screen (5) via the conveying device (3). The crushed material of 0 to 30 mm coming out from the second screen (5) is supplied to the dust removing device (14) via the carrying device (3). A hydraulic power sorting device is used for the dust removing device (14), and after the wood, paper dust, etc. are removed by the hydraulic power sorting device, the crushed material from which the wood, paper dust, etc. are removed is the third screen (6). And is separated into crushed products of 0 to 4 mm and crushed products of more than 4 mm. The crushed material that exceeds 4 mm
It is supplied to the third crushing device (9) via the transfer device (3). The third crushing device (9) is for further crushing the crushed material exceeding 4 mm into 0 to 4 mm and removing the pitch and the like coated on the crushed material. In this embodiment, a super sander (trade name) is used. I'm using it. The crushed material discharged from the third crushing device (9) is the first crushing device (1
It sifts by 1), separates fine powder of cement less than 0.074 mm , and those of 0.074-4 mm are returned to the third screen (6) via the transporting device (3). The crushed material of 0 to 4 mm or less coming out from the third screen (6) is supplied to the second classifying device (12) to obtain 0.074 mm.
Fine powder of cement content less than 0.074-4m
The thing of m is collect | recovered as an aggregate (13).
【００１０】このように、分級装置（１１）、（１２）
で、０．０７４〜４ｍｍの骨材（１３）と０．０７４ｍ
ｍ未満のセメント分等のダスト（１５）を分別すること
ができるので、空気中の炭酸ガスや亜硫酸ガスが雨水に
溶けた酸性雨と反応してコンクリート中で塩を形成する
ことがなく、良質な骨材を得ることができる。Thus, the classifying devices (11), (12)
And 0.074 to 4 mm aggregate (13) and 0.074 m
Since it is possible to separate dust (15) such as cement content of less than m, carbon dioxide gas and sulfurous acid gas in the air do not react with acid rain dissolved in rainwater to form a salt in concrete, which is of good quality. It is possible to obtain a good aggregate.
【００１１】[0011]
【発明の効果】この発明は以上詳述した如く、コンクリ
ート及びアスファルト廃棄物を原料受入設備に収納し、
この原料受入設備の下端放出口には切出設備を設け、こ
の切出設備から切出しされた原料を第一のふるい設備に
供給し、３０ｍｍを超える骨材調製可能原料と０−３０
ｍｍの不良原料とに分別し、一方切出設備を通過できな
かった原料を第一の破砕装置に供給して８０ｍｍ以下に
破砕し、この８０ｍｍ以下に破砕した破砕物を第二のふ
るい設備に供給し、この第二のふるい設備により０〜３
０ｍｍの破砕物と３０ｍｍを越える破砕物とに分別し、
前記骨材調製可能原料と第二のふるい設備から出てくる
３０ｍｍ以上の破砕物を第二の破砕装置に供給して再破
砕し、この再破砕した破砕物を再度第二のふるい設備に
供給し、この第二のふるい設備から出てくる０〜３０ｍ
ｍの破砕物をゴミ除去装置に供給し、木、紙屑等を除去
した後、この０〜３０ｍｍの破砕物を第三のふるい設備
に供給して０〜４ｍｍの破砕物と４ｍｍを越える破砕物
とに分別し、この４ｍｍを越える破砕物を第三の破砕装
置に供給して４ｍｍ以下に破砕するとともに破砕物に被
膜したピッチ等を除去し、この４ｍｍ以下に破砕した破
砕物を第一の分級設備に供給し、０．０７４ｍｍ未満の
セメント分の微粉末を分別して０．０７４ｍｍ〜４ｍｍ
の破砕物を再度第三のふるい設備に供給し、この第三の
ふるい設備から出てくる４ｍｍ以下の破砕物を第二の分
級設備に供給し、０．０７４ｍｍ未満のセメント分の微
粉末を分別して０．０７４〜４ｍｍの骨材として回収す
ることを特徴とするコンクリート及びアスファルト廃棄
物からの骨材の調製法であるから、以下の効果を奏す
る。すなわち、分級装置により、０．０７４ｍｍ未満の
セメント分の微粉末を分別することができるため、空気
中の炭酸ガスや亜硫酸ガスが雨水に溶けた酸性雨と反応
してコンクリート中で塩を形成することがなく、良質な
骨材を得ることができ、更に分級装置により、アスファ
ルト破砕物中のピッチ分を除去することがでるため、油
分がなく物理的性状や美観を損ねることのない良質な骨
材を得ることができ、骨材として、資源再利用、自然保
護の観点から優れた効果を奏する骨材となる。As described in detail above, the present invention stores concrete and asphalt waste in a raw material receiving facility,
A cutting facility is provided at the lower end discharge port of this raw material receiving equipment, and the raw material cut out from this cutting equipment is supplied to the first sieving equipment to prepare an aggregate- preparable raw material of more than 30 mm
The raw material that cannot be passed through the cutting equipment is fed to the first crushing device and crushed to 80 mm or less, and the crushed material crushed to 80 mm or less is fed to the second sieving equipment. Supplied and 0-3 by this second sieving equipment
Separated into 0 mm crushed material and 30 mm crushed material,
The aggregate-preparable raw material and the crushed material of 30 mm or more coming out from the second sieving equipment are supplied to the second crushing apparatus and re-crushed, and the re-crushed crushed material is again supplied to the second sieving equipment. However, 0 to 30m from this second sieving equipment
m of the crushed material is supplied to the dust removing device to remove wood, paper scraps, etc., and the crushed material of 0 to 30 mm is supplied to the third sieving equipment to crush the material of 0 to 4 mm and the crushed material of more than 4 mm. The crushed material exceeding 4 mm is fed to a third crushing device to crush it to 4 mm or less and the pitch etc. coated on the crushed material is removed, and the crushed material crushed to 4 mm or less is Supply to classification equipment and separate fine powder of cement less than 0.074 mm to 0.074 mm to 4 mm
The crushed material of No. 4 is again supplied to the third sieving equipment, the crushed material of 4 mm or less coming out of the third sieving equipment is supplied to the second classification equipment, and the fine powder of cement content less than 0.074 mm is obtained. It is a method for preparing an aggregate from concrete and asphalt waste, which is characterized in that it is separated and collected as an aggregate of 0.074 to 4 mm, and therefore the following effects are exhibited. That is, since a classifier can separate fine powder of cement less than 0.074 mm, carbon dioxide gas or sulfurous acid gas in the air reacts with acid rain dissolved in rainwater to form a salt in concrete. It is possible to obtain high quality aggregates without using oil, and since the pitch component in the asphalt crushed material can be removed by a classifier, there is no oil content and high quality bone that does not impair physical properties and aesthetics. It is possible to obtain an aggregate, and as an aggregate, an aggregate exhibiting excellent effects from the viewpoint of resource reuse and nature conservation.
【図１】この発明に係るコンクリート及びアスファルト
廃棄物から骨材の調製法の一実施例のフローシートであ
る。FIG. 1 is a flow sheet of an example of a method for preparing aggregate from concrete and asphalt waste according to the present invention.
【図２】図１と同じくフローシートである。FIG. 2 is a flow sheet similar to FIG.
１ ホッパー ２ 切出設備 ３ 搬送装置 ４ 第一のスクリーン ５ 第二のスクリーン ６ 第三のスクリーン ７ 第一の破砕装置 ８ 第二の破砕装置 ９ 第三の破砕装置 １０ 原料 １１ 第一の分級装置 １２ 第二の分級装置 １３ 骨材 １４ ゴミ除去装置 １５ ダスト １６ 不良原料 1 Hopper 2 Cutting Equipment 3 Conveying Device 4 First Screen 5 Second Screen 6 Third Screen 7 First Crushing Device 8 Second Crushing Device 9 Third Crushing Device 10 Raw Material 11 First Classifying Device 12 Second classifier 13 Aggregate 14 Dust remover 15 Dust 16 Defective raw material
Claims (1)
原料受入設備に収納し、この原料受入設備の下端放出口
には切出設備を設け、この切出設備から切出しされた原
料を第一のふるい設備に供給し、３０ｍｍを超える骨材
調製可能原料と０−３０ｍｍの不良原料とに分別し、一
方切出設備を通過できなかった原料を第一の破砕装置に
供給して８０ｍｍ以下に破砕し、この８０ｍｍ以下に破
砕した破砕物を第二のふるい設備に供給し、この第二の
ふるい設備により０〜３０ｍｍの破砕物と３０ｍｍを越
える破砕物とに分別し、前記骨材調製可能原料と第二の
ふるい設備から出てくる３０ｍｍ以上の破砕物を第二の
破砕装置に供給して再破砕し、この再破砕した破砕物を
再度第二のふるい設備に供給し、この第二のふるい設備
から出てくる０〜３０ｍｍの破砕物をゴミ除去装置に供
給し、木、紙屑等を除去した後、この０〜３０ｍｍの破
砕物を第三のふるい設備に供給して０〜４ｍｍの破砕物
と４ｍｍを越える破砕物とに分別し、この４ｍｍを越え
る破砕物を第三の破砕装置に供給して４ｍｍ以下に破砕
するとともに破砕物に被膜したピッチ等を除去し、この
４ｍｍ以下に破砕した破砕物を第一の分級設備に供給
し、０．０７４ｍｍ未満のセメント分の微粉末を分別し
て０．０７４ｍｍ〜４ｍｍの破砕物を再度第三のふるい
設備に供給し、この第三のふるい設備から出てくる４ｍ
ｍ以下の破砕物を第二の分級設備に供給し、０．０７４
ｍｍ未満のセメント分の微粉末を分別して０．０７４〜
４ｍｍの骨材として回収することを特徴とするコンクリ
ート及びアスファルト廃棄物からの骨材の調製法。1. A concrete and asphalt waste is stored in a raw material receiving facility, a cutting facility is provided at a lower end discharge port of the raw material receiving facility, and the raw material cut out from the cutting facility is used as a first sieving facility. The raw material which is supplied and is separated into the aggregate-preparable raw material exceeding 30 mm and the defective raw material of 0-30 mm , while the raw material which cannot pass through the cutting equipment is supplied to the first crushing device and crushed to 80 mm or less. The crushed material crushed to 80 mm or less is supplied to the second sieving equipment, and this second sieving equipment separates the crushed material of 0 to 30 mm and the crushed material of more than 30 mm to obtain the aggregate-preparable raw material and the second sieving material. The crushed material of 30 mm or more coming out of the No. sieving equipment is supplied to the second crushing apparatus for re-crushing, and the re-crushed crushed material is again supplied to the second sieving apparatus. 0 to come out The crushed material of 0 mm is supplied to the dust removing device to remove wood, paper scraps, etc., and the crushed material of 0 to 30 mm is supplied to the third sieving equipment to crush the material of 0 to 4 mm and the crushed material exceeding 4 mm. The crushed material exceeding 4 mm is fed to a third crushing device to crush it to 4 mm or less and the pitch etc. coated on the crushed material is removed, and the crushed material crushed to 4 mm or less is It is supplied to the classification equipment, the fine powder of cement less than 0.074 mm is separated, and the crushed material of 0.074 mm to 4 mm is supplied again to the third sieving equipment, and 4 m coming out from this third sieving equipment.
The crushed material of m or less is supplied to the second classification equipment, and 0.074
0.074 ~ by separating fine powder of cement less than mm
A method for preparing aggregate from concrete and asphalt waste, which is characterized in that it is recovered as 4 mm aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13181892A JP2538484B2 (en) | 1992-04-23 | 1992-04-23 | Method for preparing aggregate from concrete and asphalt waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13181892A JP2538484B2 (en) | 1992-04-23 | 1992-04-23 | Method for preparing aggregate from concrete and asphalt waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05301086A JPH05301086A (en) | 1993-11-16 |
| JP2538484B2 true JP2538484B2 (en) | 1996-09-25 |
Family
ID=15066823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13181892A Expired - Fee Related JP2538484B2 (en) | 1992-04-23 | 1992-04-23 | Method for preparing aggregate from concrete and asphalt waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538484B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100363712B1 (en) * | 2000-08-19 | 2002-12-12 | 우진환경개발 주식회사 | Asphalt-concrete scrap processing and reclaiming equipment and method |
| KR100358899B1 (en) * | 2000-11-06 | 2002-10-31 | 주식회사 협진산업 | Aggregating Equipment of Used Concrete |
| KR100476686B1 (en) * | 2001-08-30 | 2005-03-17 | 주식회사 서원 | batch type cold mix recycling asphalt concrete manufacture apparatus and method |
| JP5317434B2 (en) * | 2007-06-13 | 2013-10-16 | 株式会社 山辰鉱産 | Excavated soil reforming plant containing defective soil residue |
| CN111589503B (en) * | 2020-05-20 | 2023-03-24 | 刘志明 | Concrete mixing plant reclaimed sand and machine-made sand production line and sand making process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58900A (en) * | 1981-06-26 | 1983-01-06 | 理研ビタミン株式会社 | Treatment of sugar liquid |
| JPH01114780A (en) * | 1987-10-28 | 1989-05-08 | Kanegafuchi Chem Ind Co Ltd | X-ray detecting device |
| JPH04114780A (en) * | 1990-09-04 | 1992-04-15 | Towa Kogyo Kk | Method and apparatus for re-treating concrete waste |
-
1992
- 1992-04-23 JP JP13181892A patent/JP2538484B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05301086A (en) | 1993-11-16 |
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