JP3196027B2 - Aggregate recycling method of waste concrete - Google Patents
Aggregate recycling method of waste concreteInfo
- Publication number
- JP3196027B2 JP3196027B2 JP26169299A JP26169299A JP3196027B2 JP 3196027 B2 JP3196027 B2 JP 3196027B2 JP 26169299 A JP26169299 A JP 26169299A JP 26169299 A JP26169299 A JP 26169299A JP 3196027 B2 JP3196027 B2 JP 3196027B2
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- waste
- aggregate
- outlet
- polishing
- 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 43
- 239000004567 concrete Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 5
- 238000004064 recycling Methods 0.000 title description 2
- 238000005498 polishing Methods 0.000 claims description 34
- 239000004570 mortar (masonry) Substances 0.000 claims description 32
- 239000000428 dust Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、コンクリート廃
材の骨材再生方法に関するもので、更に述べれば、骨材
に付着しているモルタル分を除去し、骨材だけの状態に
するための方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of regenerating aggregate of waste concrete, and more particularly, to a method of removing mortar adhering to aggregate and leaving only the aggregate. Things.
【０００２】[0002]
【従来の技術】鉄筋コンクリート構造物を解体すると、
コンクリート廃材が発生するが、このコンクリート廃材
は主として海岸の埋め立てなどに利用されている。とこ
ろが、このコンクリート廃材の発生量は近年著しく増大
する一方で、埋め立て地などの確保が年々難しくなると
ともに、その処理費用も急激に増大している。2. Description of the Related Art When a reinforced concrete structure is dismantled,
Concrete waste is generated, and this concrete waste is mainly used for reclamation of coasts. However, while the amount of generated concrete waste material has increased remarkably in recent years, it has become difficult year by year to secure landfill sites and the like, and the disposal cost has rapidly increased.
【０００３】そこで、このコンクリート廃材のリサイク
ルにより上記問題の解決を図ろうとする試みがなされて
いる。例えば、コンクリート廃材を破砕して廃骨材のみ
を取り出し、再利用するものである。[0003] Attempts have been made to solve the above problem by recycling this concrete waste material. For example, concrete waste is crushed to take out only waste aggregate and reuse it.
【０００４】[0004]
【発明が解決しようとする課題】ところが、このコンク
リート廃材から取り出した骨材、例えば、石や砂、はそ
の周りにモルタル分が付着し、所謂、廃骨材となってい
る。そのため、この状態で骨材として再利用すると、吸
水率が高くなる等の問題が発生し、良質なコンクリート
材料とならない。小石大より細かい骨材、例えば、５ｍ
ｍ以下の細骨材、の場合には、単位表面積当たりのモル
タル分が多いので、特に上記問題が顕著となる。However, aggregates, such as stones and sands, taken out of the concrete waste material have a mortar adhered therearound, so that they are so-called waste aggregates. Therefore, if it is reused as aggregate in this state, problems such as an increase in water absorption occur, and a high-quality concrete material cannot be obtained. Aggregate finer than large stones, for example, 5m
In the case of fine aggregate having a particle size of m or less, the mortar content per unit surface area is large.
【０００５】本発明は、上記事情に鑑み、良質な再生骨
材を得ることを目的とする。[0005] In view of the above circumstances, an object of the present invention is to obtain a high-quality recycled aggregate.
【０００６】[0006]
【課題を解決するための手段】この発明は、コンクリー
ト廃材を破砕して得られた廃骨材をホッパに投入する工
程と；該ホッパの出口から該研磨室の入口に前記廃骨材
を供給する工程と；前記研磨ロールにより前記廃骨材に
設定圧力をかけながら該研磨室の出口に向かって攪拌圧
送し、該廃骨材からモルタルを剥離するとともに、前記
研磨室の外周を囲む除塵網から前記モルタルをモルタル
回収室内に落下せしめる工程と；前記研磨室の出口から
排出された再生骨材と、前記除塵網から落下しなかった
モルタルとを、前記研磨室の出口に連設された排出樋内
の傾斜ガイド板上に落下せしめるとともに、該モルタル
を該傾斜ガイド板と該排出樋の底部との間の連通路内に
流れている吸引気流により、前記モルタル回収室に吸引
する工程と；を備えていることを特徴とする。SUMMARY OF THE INVENTION This invention provides process and to inject waste aggregate obtained by crushing concrete waste hopper; supplying the waste aggregates from the outlet of the hopper to the inlet of said polishing chamber step of the; while applying a predetermined pressure to the waste aggregates by the polishing roll stirred pumped towards the outlet of the grinding chamber, with peeling the mortar from waste aggregate, the
Mortar from the dust screen surrounding the outer periphery of the polishing chamber
Dropping into the collection chamber; and from the polishing chamber outlet
The discharged recycled aggregate and did not fall from the dust net
Mortar and a discharge gutter connected to the outlet of the polishing chamber.
Of the mortar
Into the communication passage between the inclined guide plate and the bottom of the discharge gutter.
Suction into the mortar collection chamber by the flowing suction airflow
And a step of performing the following.
【０００７】[0007]
【発明の実施の形態】コンクリート廃材を破砕して廃骨
材を得た後、この廃骨材を研磨室内に入れ、研磨ロール
を回転させて設計圧力をかけながら出口に向かって攪拌
圧送する。そうすると、該廃骨材と研磨ロール間の摩擦
及び該廃骨材同志の摩擦及び該廃骨材と研磨室の外壁内
の摩擦により廃骨材の表面に付着しているモルタルが剥
離するので、該廃骨材は再生骨材即ちモルタル分の付着
していない骨材となる。DESCRIPTION OF THE PREFERRED EMBODIMENTS After waste concrete is crushed to obtain waste aggregate, the waste aggregate is put into a polishing chamber, and the polishing roll is rotated to be stirred and fed toward an outlet while applying a design pressure. Then, the mortar adhered to the surface of the waste aggregate is peeled off due to the friction between the waste aggregate and the polishing roll, the friction between the waste aggregates, and the friction between the waste aggregate and the outer wall of the polishing chamber. The waste aggregate becomes recycled aggregate, that is, aggregate having no mortar attached.
【０００８】[0008]
【実施例】この発明の実施例を図１〜図３により説明す
る。ホッパ１の出口２には、シャッターツマミ３により
開閉されるシャッタ５が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. A shutter 5 that is opened and closed by a shutter knob 3 is provided at an outlet 2 of the hopper 1.
【０００９】ホッパ１の出口２は、落下樋６を介して研
磨室７の入口７ａに連結されている。研磨室７内には、
研磨ロール８が内蔵されている。この研磨ロール８の基
端８ａは、図示しない駆動モータの回転軸９に連結され
ている。研磨ロール８の基端８ａ側には、送り込みねじ
部１０が設けられ、又、その自由端８ｂ側には攪拌羽根
１１が設けられている。The outlet 2 of the hopper 1 is connected to an inlet 7a of a polishing chamber 7 via a drop gutter 6. In the polishing room 7,
A polishing roll 8 is built in. A base end 8a of the polishing roll 8 is connected to a rotating shaft 9 of a drive motor (not shown). A feed screw portion 10 is provided on the base end 8a side of the polishing roll 8, and a stirring blade 11 is provided on its free end 8b side.
【００１０】研磨室８の外周は、除塵網４により囲まれ
ており、該除塵網４の下部にはモルタル回収室１２が設
けられている。このモルタル回収室１２は、パイプ１３
を介して図示しない吸引ファンに連通している。[0010] The outer periphery of the polishing chamber 8 is surrounded by a dust net 4, and a mortar collection chamber 12 is provided below the dust net 4. The mortar collection chamber 12 is provided with a pipe 13
Through a suction fan (not shown).
【００１１】研磨室７の出口７ｄ近傍には、調圧板１５
が設けられ、この調圧板１５は抵抗調節ハンドル１６に
より摺動する。研磨室７の出口７ｄには、排出樋１７が
連設され、該排出樋１７内には、長手方向に伸びる傾斜
ガイド１８が設けられている。この傾斜ガイド板１８と
排出樋１７の底部１７ａとの間は連通路２０となってお
り、この連通路２０は連通口２１を介してモルタル回収
室１２に連通している。In the vicinity of the outlet 7d of the polishing chamber 7, a pressure regulating plate 15
The pressure adjusting plate 15 is slid by a resistance adjusting handle 16. A discharge gutter 17 is connected to the outlet 7d of the polishing chamber 7, and an inclined guide 18 extending in the longitudinal direction is provided in the discharge gutter 17. A communication passage 20 is provided between the inclined guide plate 18 and the bottom 17 a of the discharge gutter 17, and the communication passage 20 communicates with the mortar collection chamber 12 through a communication port 21.
【００１２】次に、本実施例の作動について説明する。
コンクリート廃材を破砕し、廃骨材２５を得る。この廃
骨材２５は天然石２３と、該天然石２３に付着したモル
タル２４と、から構成されている。Next, the operation of this embodiment will be described.
The concrete waste is crushed to obtain waste aggregate 25. The waste aggregate 25 includes a natural stone 23 and a mortar 24 attached to the natural stone 23.
【００１３】この廃骨材２５を所定量ホッパ１に投入し
た後、抵抗調節ハンドル１６を回し調圧板１５を摺動さ
せて抵抗を調整する。そして、スイッチを入れて駆動装
置を始動させ、研磨ロール８を回転させるとともに、吸
引ファンを回転させる。研磨ロール８が設計回転速度、
例えば、１０００rpmになったら、シャッターツマミ３
を矢印Ａ3方向に引き、シャッタ５を開く。After a predetermined amount of the waste aggregate 25 is put into the hopper 1 , the resistance is adjusted by turning the resistance adjusting handle 16 and sliding the pressure adjusting plate 15. Then, the switch is turned on to start the driving device, and the polishing roll 8 is rotated and the suction fan is rotated. The polishing roll 8 has a design rotation speed,
For example, at 1000 rpm, shutter knob 3
The pull of the arrow A 3 directions, opening the shutter 5.
【００１４】廃骨材２５は、ホッパ１の出口２から落下
樋６に落下し、研磨室７の入口７ａを通って研磨室７内
に入る。The waste aggregate 25 falls from the outlet 2 of the hopper 1 to the falling gutter 6 and enters the polishing chamber 7 through the inlet 7a of the polishing chamber 7.
【００１５】研磨室７内に入った廃骨材２５は、調圧板
１５の抵抗を受けながら送り込みネジ部１０により出口
８ｄに向かって強制的に移動させられるので、研磨室７
内は高圧、例えば、０．０５〜０．３ＭＰ、となる。The waste aggregate 25 entering the polishing chamber 7 is
15 is forcedly moved toward the outlet 8d by the feed screw section 10 while receiving the resistance of the polishing chamber 7.
The inside is at a high pressure, for example, 0.05 to 0.3 MP.
【００１６】この時、該廃骨材２５は攪拌羽根１１によ
り攪拌され回転しながら進行するが、該攪拌羽根１１と
廃骨材２５間に発生する摩擦及び隣接する廃骨材２５間
に発生する摩擦、該廃骨材２５と除塵網４間に発生する
摩擦、により廃骨材２５に付着していたモルタル２４が
剥離され、出口７ｄに到達する頃には、図３に示す様
に、元の状態、即ち、再生骨材２３となる。この再生骨
材２３の直径は、例えば、５mm〜２mmである。At this time, the waste aggregate 25 is agitated and rotated by the stirring blades 11 and advances while rotating. However, the friction generated between the stirring blade 11 and the waste aggregate 25 and the friction between the adjacent waste aggregates 25 are generated. friction, friction generated between the waste aggregate 25 and Jochirimo 4, mortar 24 adhering to the waste aggregate 25 is peeled off by, the time to reach the outlet 7 d is as shown in FIG. 3, The original state, that is, the recycled aggregate 23 is obtained. The diameter of the recycled aggregate 23 is, for example, 5 mm to 2 mm.
【００１７】又、前記モルタル２４は、除塵網４からモ
ルタル回収室１２内に落下し、パイプ１３を介して所定
場所に吸引移送される。The mortar 24 falls from the dust-removing net 4 into the mortar recovery chamber 12 and is sucked and transferred to a predetermined place via the pipe 13.
【００１８】再生骨材（天然石）２３は、出口７ｄから
傾斜ガイド板１８上に落下し排出樋１７の出口１７ｂか
ら機外に排出される。この時、除塵網４から落下しなか
ったモルタル２４は、再生骨材２３と一緒に排出樋１７
内に入り、傾斜ガイド板１８上に落下するが、連通路２
０内に流れている吸引気流２６により引っ張られてモル
タル回収室１２に入る。そのため、排出樋１７の出口１
７ｂからは再生骨材２３のみが排出される。The recycled aggregate (natural stone) 23 falls on the inclined guide plate 18 from the outlet 7d and is discharged out of the machine from the outlet 17b of the discharge gutter 17. At this time, the mortar 24 that did not fall from the dust net 4 is discharged together with the recycled aggregate 23 into the discharge gutter 17.
And falls on the inclined guide plate 18, but the communication path 2
The mortar recovery chamber 12 is pulled by the suction airflow 26 flowing into the mortar recovery chamber 12. Therefore, the outlet 1 of the discharge gutter 17
Only the recycled aggregate 23 is discharged from 7b.
【００１９】この発明の実施例は、上記に限定されるも
のではなく、例えば、研磨室７の外周に除塵網４を設
け、該除塵網４の下部にモルタル回収室１２を設ける代
わりに、研磨室７の外周を剛性の大きな円筒状壁とし、
排出樋に分級手段、例えば、分離器を連結してもよい。
この場合、研磨室内で発生したモルタルは全て再生骨材
と共に排出樋内に落下し、その後、分級手段により再生
骨材とモルタルとに分離される。The embodiment of the present invention is not limited to the above. For example, instead of providing the dust removing net 4 on the outer periphery of the polishing chamber 7 and providing the mortar collecting chamber 12 below the dust removing net 4, polishing may be performed. The outer periphery of the chamber 7 is a rigid cylindrical wall,
Classification means, for example, a separator, may be connected to the discharge gutter.
In this case, all the mortar generated in the polishing chamber falls into the discharge gutter together with the recycled aggregate, and thereafter is separated into the recycled aggregate and the mortar by the classification means.
【００２０】[0020]
【発明の効果】この発明は、以上の様に構成したので、
廃骨材に付着しているモルタルは除去される。そのた
め、この再生骨材は、ほとんど天然の骨材と同じ状態に
なるので、再利用できるとともに、従来例と異なり、廃
骨材の廃棄処分に伴う問題も発生しない。The present invention has been configured as described above.
Mortar adhering to the waste aggregate is removed. Therefore, since the recycled aggregate is almost in the same state as natural aggregate, it can be reused, and unlike the conventional example, there is no problem associated with disposal of waste aggregate.
【図１】本発明の実施例を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
【図２】廃骨材の拡大断面図である。FIG. 2 is an enlarged sectional view of a waste aggregate.
【図３】再生骨材の拡大断面図である。FIG. 3 is an enlarged sectional view of the recycled aggregate.
１ ホッパ ２ ホッパ入口 ５ 調圧板 ７ 研磨室 ８ 研磨ロール ２３ 再生骨材 ２４ モルタル ２５ 廃骨材 DESCRIPTION OF SYMBOLS 1 Hopper 2 Hopper inlet 5 Pressure regulating plate 7 Polishing room 8 Polishing roll 23 Recycled aggregate 24 Mortar 25 Waste aggregate
フロントページの続き (56)参考文献 特開 平10−338558（ＪＰ，Ａ) 特開 平10−231153（ＪＰ，Ａ) 特開 平７−300356（ＪＰ，Ａ) 特開 平２−126930（ＪＰ，Ａ) 特開 平11−314951（ＪＰ，Ａ) （社）日本工学会編 改討六版 化学 工学便覧 平成11年２月25日 丸善発行 845−847頁 特に図16．９ (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 18/16 B02C 4/10 B02C 23/16 B09B 5/00 ZAB Continuation of the front page (56) References JP-A-10-338558 (JP, A) JP-A-10-231153 (JP, A) JP-A-7-300356 (JP, A) JP-A-2-126930 (JP) , A) JP-A-11-314951 (JP, A), edited by The Japan Society for Engineering Science, Revised Sixth Edition, Chemical Engineering Handbook, Feb. 25, 1999, published by Maruzen, pages 845-847. Field (Int.Cl. 7 , DB name) C04B 18/16 B02C 4/10 B02C 23/16 B09B 5/00 ZAB
Claims (1)
材をホッパに投入する工程と； 該ホッパの出口から該研磨室の入口に前記廃骨材を供給
する工程と；前記 研磨ロールにより前記廃骨材に設定圧力をかけなが
ら該研磨室の出口に向かって攪拌圧送し、該廃骨材から
モルタルを剥離するとともに、前記研磨室の外周を囲む
除塵網から前記モルタルをモルタル回収室内に落下せし
める工程と； 前記研磨室の出口から排出された再生骨材と、前記除塵
網から落下しなかったモルタルとを、前記研磨室の出口
に連設された排出樋内の傾斜ガイド板上に落下せしめる
とともに、該モルタルを該傾斜ガイド板と該排出樋の底
部との間の連通路内に流れている吸引気流により、前記
モルタル回収室に吸引する工程と； を備えていることを特徴とするコンクリート廃材の骨材
再生方法。A step of supplying the waste aggregates from the outlet of the hopper to the inlet of said polishing chamber; 1. A process and to inject waste aggregate obtained by crushing concrete waste into the hopper by the polishing roll Agitating and pumping the waste aggregate toward the outlet of the polishing chamber while applying a set pressure to peel off the mortar from the waste aggregate and surround the outer periphery of the polishing chamber.
Drop the mortar from the dust net into the mortar collection room.
Cleaning the recycled aggregate discharged from the outlet of the polishing chamber ; and removing the dust.
The mortar that has not fallen from the net and the outlet of the polishing chamber
On the inclined guide plate in the discharge gutter connected to the
Together with the mortar, the inclined guide plate and the bottom of the discharge gutter.
The suction airflow flowing in the communication passage between the
Sucking the mortar into a mortar collection chamber .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26169299A JP3196027B2 (en) | 1999-09-16 | 1999-09-16 | Aggregate recycling method of waste concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26169299A JP3196027B2 (en) | 1999-09-16 | 1999-09-16 | Aggregate recycling method of waste concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001089208A JP2001089208A (en) | 2001-04-03 |
| JP3196027B2 true JP3196027B2 (en) | 2001-08-06 |
Family
ID=17365397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26169299A Expired - Fee Related JP3196027B2 (en) | 1999-09-16 | 1999-09-16 | Aggregate recycling method of waste concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3196027B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100516470B1 (en) * | 2004-07-29 | 2005-09-21 | 삼흥종합환경 (주) | Peeling off device for recycling gravels |
| JP6164642B2 (en) * | 2013-07-25 | 2017-07-19 | 日工株式会社 | Recycle processing method of fine aggregate |
| CN104858011A (en) * | 2015-05-23 | 2015-08-26 | 王杨 | Device capable of effectively smashing mineral ores |
| CN111068875A (en) * | 2019-11-19 | 2020-04-28 | 湖南贵都建材有限公司 | Production device and production process of latex paint |
| CN114377814A (en) * | 2021-12-30 | 2022-04-22 | 常熟市天和砼有限公司 | Production equipment and processing technology of recycled concrete |
-
1999
- 1999-09-16 JP JP26169299A patent/JP3196027B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| （社）日本工学会編 改討六版 化学工学便覧 平成１１年２月２５日 丸善発行 ８４５−８４７頁 特に図１６．９ |
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|---|---|
| JP2001089208A (en) | 2001-04-03 |
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