JPH10338558A - Method for regenerating concrete aggregate - Google Patents
Method for regenerating concrete aggregateInfo
- Publication number
- JPH10338558A JPH10338558A JP14672597A JP14672597A JPH10338558A JP H10338558 A JPH10338558 A JP H10338558A JP 14672597 A JP14672597 A JP 14672597A JP 14672597 A JP14672597 A JP 14672597A JP H10338558 A JPH10338558 A JP H10338558A
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- rotary drum
- shell rotary
- rotor
- outer shell
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 20
- 230000001172 regenerating effect Effects 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004575 stone Substances 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 19
- 239000002994 raw material Substances 0.000 description 16
- 230000005484 gravity Effects 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Crushing And Grinding (AREA)
Abstract
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
材からコンクリート骨材を再生する方法に係り、装置に
投入されるコンクリート廃材に特定の比率で水を供給し
ながら効率よく再生コンクリート骨材を得ることのでき
るコンクリート骨材再生方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for regenerating concrete aggregate from waste concrete, and to efficiently obtain recycled concrete aggregate while supplying water at a specific ratio to concrete waste put into an apparatus. And a method for regenerating concrete aggregate.
【０００２】[0002]
【従来の技術】コンクリート建設の急進展に伴い、コン
クリート骨材の不足が叫ばれるようになって久しく、岩
石を砕きこれを研石して砂利あるいは砂として使用され
てきた。一方、老朽化したコンクリート建設物を解体
し、新たに高層建築物を建設することが盛んに行われて
いる。2. Description of the Related Art With the rapid progress of concrete construction, shortage of concrete aggregate has been called out for a long time, and rocks have been crushed and crushed and used as gravel or sand. On the other hand, demolition of aging concrete structures and construction of new high-rise buildings are actively performed.
【０００３】ここで、解体によって排出されるコンクリ
ート廃材中には、再生すれば再利用できるコンクリート
骨材が存在しており、このコンクリート骨材の再生に
は、砕石の角を丸める装置、いわゆる研石機を使用する
ことができ、特開平８−２４５２４８号（特願平７−３
５２８３３号）公報でその技術として提案されている。[0003] Here, concrete aggregate that can be reused by recycling exists in the concrete waste discharged by the demolition. In order to regenerate this concrete aggregate, a device for rounding corners of crushed stone, so-called grinding is used. A stone machine can be used, as disclosed in Japanese Patent Application Laid-Open No. 8-245248 (Japanese Patent Application No. 7-3).
No. 52833) has proposed this technology.
【０００４】[0004]
【発明が解決しようとする課題】上記提案によれば、
「モルタル分の付着量が少なくて、法定基準に合致する
高品質の砂利砕石等の骨材を再生しうる。」としてい
る。According to the above proposal,
"The amount of mortar adhered is small, and high-quality aggregates such as crushed gravel that meet legal standards can be regenerated."
【０００５】しかし、上記提案をよく検討してみるとプ
ラントの運転条件によって再生される骨材の品位にバラ
ツキが生じること、および、再生砂の品位と再生効率
（特に細粒砂）が極めて低いという問題があることを発
見した。However, when the above proposals are carefully examined, the quality of the recycled aggregate varies depending on the operating conditions of the plant, and the quality of the recycled sand and the regeneration efficiency (particularly, fine sand) are extremely low. I found that there was a problem.
【０００６】上記のように再生骨材の品位にバラツキが
あることは、そのまま使用したのでは、コンクリート構
築物中に凝結力の不十分な部分が生成することを意味し
構築物の信頼性に係わる問題が残る。[0006] The variation in the quality of the recycled aggregate as described above means that, if used as it is, a portion having insufficient coagulation force will be formed in the concrete structure, and a problem relating to the reliability of the structure will occur. Remains.
【０００７】また、再生骨材の品位にバラツキが生じる
ことは、研石機によって骨材表面から剥離除去した凝結
セメント成分（固形物・粉体を含む）や混在する余物の
回収・捕集が不十分になることが予測され、これを不用
意に廃棄・放出するならば大気または河川の汚染に繋が
るのでその取扱は慎重に行われる必要がある。[0007] The occurrence of variation in the quality of the recycled aggregate is caused by the collection and collection of set cement components (including solids and powders) separated from the surface of the aggregate by a honing machine and mixed residual materials. It is anticipated that this will be inadequate, and care should be taken with care, since careless disposal and release can lead to air or river pollution.
【０００８】この発明は、上記従来技術を検討する過程
で得られた知見をもとに、再生骨材の品質安定化と再生
効率を向上し、とりわけ従来技術の問題点であった再生
砂の品位と再生効率を向上させて良質の再生コンクリー
ト骨材を得る方法を提供しようとするものである。The present invention is based on the knowledge obtained in the course of studying the above-mentioned prior art, and stabilizes the quality of the regenerated aggregate and improves the regenerating efficiency. It is an object of the present invention to provide a method for obtaining high quality recycled concrete aggregate by improving the quality and the recycling efficiency.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に請求項１の発明は、内周面に多数の研石用ブレードを
配設した外殻ロータリードラムと、その外殻ロータリー
ドラムの内部に、外周面に多数の研石用ブレードを配設
したローターを、上記外殻ロータリードラムの回転と逆
方向に回転するように、かつ、ローターの回転軸の位置
が、外殻ロータリードラム回転軸の垂線より、その回転
方向下手側に位置するように配置し、外殻ロータリード
ラムの投入口・排出口に堰板を設けてなる装置を用いて
コンクリート骨材を再生する方法において、上記装置
に、粗破砕したコンクリート廃材と水とを、１００：２
５乃至１００の重量比で投入しながら骨材表面の付着物
を剥離除去する構成したものである。Means for Solving the Problems In order to solve the above problems, the invention of claim 1 is directed to an outer shell rotary drum having a large number of grinding stone blades disposed on an inner peripheral surface thereof, and an inner portion of the outer shell rotary drum. Then, a rotor having a number of grinding stones disposed on its outer peripheral surface is rotated in a direction opposite to the rotation of the outer rotary drum, and the position of the rotary axis of the rotor is set to the outer rotary drum rotary axis. In the method of regenerating concrete aggregate using a device provided with a weir plate at the inlet and outlet of the outer shell rotary drum, the device is arranged so as to be located on the lower side in the rotation direction from the perpendicular of , The coarsely crushed concrete waste and water were mixed in a ratio of 100: 2
It is configured such that the deposits on the surface of the aggregate are peeled and removed while being charged at a weight ratio of 5 to 100.
【００１０】請求項２の発明は、上記コンクリート骨材
再生方法において、上記工程の後段に、サイクロン分級
工程、上記サイクロン分級工程で噴流側に分級されたシ
ルトを収集・捕捉し、沈澱させる工程を付加してなる構
成としたものである。According to a second aspect of the present invention, in the method for regenerating concrete aggregate, a cyclone classification step and a step of collecting, trapping, and sedimenting the silt classified on the jet side in the cyclone classification step are provided after the step. This is an additional configuration.
【００１１】請求項３の発明は、上記コンクリート骨材
再生方法において、上記骨材表面の付着物を剥離除去す
る工程の後段で、付着物剥離除去済み固・液混濁物に散
水しながら凝結セメント成分および浮遊成分を除去する
工程を付加してなる構成としたものである。According to a third aspect of the present invention, in the above-mentioned method for regenerating concrete aggregate, in the latter stage of the step of separating and removing the deposits on the surface of the aggregate, the cement cement is sprinkled while spraying the solid-liquid turbid matter from which the deposits have been removed. It is configured to add a step of removing components and suspended components.
【００１２】上記の如く構成するこの発明は、研石機に
特定量の水とともに投入されたコンクリート廃材が、効
果的な固・液混濁状態で研石されることによって砂利・
砂等コンクリート骨材表面の凝結セメント成分が効率よ
く剥離除去され安定した品位の高い再生骨材が得られ、
とりわけ従来技術に期待し得なかった再生砂の品位と再
生効率を向上し、かつ、剥離除去された凝結セメント成
分の固体・粉体を確実に収集捕捉することができるよう
になった。According to the present invention having the above-described structure, the concrete waste material charged with a specific amount of water into the stone crusher is polished in an effective solid / liquid turbid state, thereby removing the gravel and stone.
Condensed cement components on the surface of concrete aggregate such as sand are efficiently peeled and removed, and stable and high-quality recycled aggregate is obtained.
In particular, the quality and regeneration efficiency of the recycled sand, which could not be expected from the prior art, have been improved, and solids and powders of the set cement component that have been separated and removed can be reliably collected and captured.
【００１３】請求項１の発明において、装置に注入され
る水の量が、上記規定を越えるときは、混濁濃度が低
下、即ち研石されるべきコンクリート廃材が浮遊状態に
なって研石効果が低下する。また、水量が少なすぎると
きは、骨材に対する固・液混濁物の絡み具合が不十分に
なって十分な研石効果が得られず、特に骨材の凹部に凝
結したセメント成分が剥離除去されず再生骨材の品質低
下の要因となる。[0013] In the first aspect of the present invention, when the amount of water injected into the apparatus exceeds the above-mentioned specification, the turbidity concentration is reduced, that is, the waste concrete to be honed floats and the honing effect is reduced. descend. On the other hand, when the amount of water is too small, the entanglement of the solid / liquid turbid matter with the aggregate is insufficient, and a sufficient stoning effect is not obtained.In particular, the cement component settled in the concave portion of the aggregate is peeled off and removed. It becomes a factor of quality reduction of recycled aggregate.
【００１４】[0014]
【発明の実施の形態】次に、この発明に係るコンクリー
ト骨材再生方法について図面とともに説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a concrete aggregate recycling method according to the present invention will be described with reference to the drawings.
【００１５】図１は、この方法で使用する研石機の横断
面図、図２は、概略正面図、図３は、堰板部の横断面図
である。内周面に多数の研石用ブレード２１が配設され
た外殻ロータリードラム２２は、アンダーローラー２３
に支承され、外殻ロータリードラム２２の略中央には平
歯車２４が一体に設けられ、これにモーター２５により
回転するピニオン２６が噛合して回転するようになって
いる。この外殻ロータリードラム２２の上手（図面上の
左手）には、粗破砕コンクリート廃材（以下、原料とい
う）投入用のホッパー２７が設けられ、下手（図面上の
右手）には、金網筒２８（トロンメル篩い）が取り付け
られ、さらに原料投入口と排出口には堰板３５が設けら
れて、投入された原料が、外殻ロータリードラム２２内
で一定時間滞留したのち堰板３５からオーバーフロー
し、粉体あるいは微細粒の凝結セメント成分（以下、こ
の状態のものをシルトという）が除去される。FIG. 1 is a cross-sectional view of a grinding machine used in this method, FIG. 2 is a schematic front view, and FIG. 3 is a cross-sectional view of a weir plate. An outer shell rotary drum 22 having a large number of grinding stones 21 disposed on an inner peripheral surface thereof is provided with an under roller 23.
A spur gear 24 is integrally provided at substantially the center of the outer shell rotary drum 22, and a pinion 26 rotated by a motor 25 meshes with the spur gear 24 to rotate. A hopper 27 for charging coarsely crushed concrete waste material (hereinafter, referred to as a raw material) is provided on the upper side (the left hand on the drawing) of the outer shell rotary drum 22, and a wire mesh tube 28 ( A trommel sieve is attached, and a weir plate 35 is provided at the raw material inlet and outlet. The charged raw material stays in the outer shell rotary drum 22 for a certain period of time, then overflows from the weir plate 35, and The set cement component of the body or the fine particles (hereinafter referred to as silt in this state) is removed.
【００１６】外殻ロータリードラム２２の内部には、外
周面に多数の研石用ブレード３１が配設されたローター
３２が軸受け３３により支承されていて、その回転軸３
４は、外殻ロータリードラム２２の中心軸から降ろされ
た垂線より、その外殻ロータリードラム２２の回転方向
下手寄りに偏在するようにしてあり、ローター３２の回
転方向は、外殻ロータリードラム２２の回転方向と逆方
向になるようにしてある。このようにすることによっ
て、外殻ロータリードラム２２内における原料の研石効
果を向上させることができる。Inside the outer shell rotary drum 22, a rotor 32 having a large number of grinding stones 31 disposed on its outer peripheral surface is supported by a bearing 33, and its rotating shaft 3 is provided.
Numeral 4 is arranged so as to be eccentrically located in the lower part in the rotation direction of the outer shell rotary drum 22 from a perpendicular line lowered from the center axis of the outer shell rotary drum 22, and the rotation direction of the rotor 32 is The direction is opposite to the direction of rotation. By doing so, the stoning effect of the raw material in the outer shell rotary drum 22 can be improved.
【００１７】次に、上記研石機を用いたコンクリート骨
材再生方法を、図４および図５を参照して工程を追って
説明する。Next, a method for regenerating concrete aggregate using the above-mentioned honing machine will be described step by step with reference to FIG. 4 and FIG.
【００１８】ヤードにトラックで搬入された原料は、原
料ホッパーに投入される。投入された原料は、バイブロ
フィーダーにより原石コンベヤーを経て磁石選別機に至
る。ここでは、粗破砕された原料中の鉄屑が除去され水
とともに一次研石機に投入される。The raw materials carried into the yard by truck are put into a raw material hopper. The input raw material is passed through a rough conveyor by a vibro feeder to a magnet sorter. Here, iron swarf in the coarsely crushed raw material is removed, and the raw material is put into a primary stone crusher together with water.
【００１９】一次研石機では、骨材表面の凝結セメント
成分が剥離除去される。比重選別機（散水と篩い）によ
り骨材から剥がれたシルトおよび浮遊成分などが洗い流
される。この段階では、骨材の表面に凝結セメント成分
が残っているので、二次研石機に給水されながら再度投
入され、その出口で散水されながら砂利選別篩いにかけ
られ再生砂利はストックヤードに蓄積される。In the primary stone grinder, the set cement component on the surface of the aggregate is peeled and removed. Silt and suspended components that have been separated from the aggregate are washed away by a specific gravity sorter (sprinkling and sieving). At this stage, since the set cement component remains on the surface of the aggregate, it is supplied again while being supplied to the secondary stone crusher, and is sprinkled at the outlet while being passed through a gravel sorting sieve, and the recycled gravel is accumulated in the stock yard. You.
【００２０】上記砂利選別篩いで、篩いを通過した砂や
シルトを含む水は、サイクロンフィードタンクおよびサ
イクロンフィードポンプを経てサイクロン分級機に至
り、ここで砂とシルトに分級され、砂は散水されながら
砂選別篩いでシルトを洗いおとされ、上記篩いを通過し
たシルトを含む水は原水槽に至る。In the gravel sorting sieve, the water containing sand and silt that has passed through the sieve passes through a cyclone feed tank and a cyclone feed pump, reaches a cyclone classifier, where it is classified into sand and silt. The silt is washed off with a sand sorting sieve, and the silt-containing water that has passed through the sieve reaches the raw water tank.
【００２１】噴流側に分級されたシルトを含む水は、途
中凝集剤が投入され原水槽、原水ポンプを経てシックナ
ースピゴットに至りシルトを沈降させ、シルト濃度の高
くなった部分をシルト引き抜きポンプによって沈澱池に
移される。The water containing silt classified on the jet side is supplied with a coagulant on the way, passes through a raw water tank and a raw water pump, reaches a thickener spigot, and sediments the silt. Moved to the pond.
【００２２】次にこの発明の一実施例を図６および図７
を参照しながら説明する。なお、図中枠内の数値は、下
記一次研石機の標準処理能力に対応して投入する原料を
１００としたときの各工程において排出された中間物の
量を指数（以下、本文中では他の数字と区別するために
数値の後に「ｖ」を付す）で表したものであり、表記さ
れた数値中には一定の幅が存在するが、これは研石機に
注入する水量を、この発明の構成範囲内で変化させた結
果によるものである。また、この実施例で使用する主な
機械装置は次の通りである。Next, an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. The numerical value in the frame in the figure is an index of the amount of intermediates discharged in each step when the raw material to be charged is set to 100 corresponding to the standard processing capacity of the primary stone crusher described below (hereinafter, in the text, It is represented by "v" after the number to distinguish it from other numbers), and there is a certain width in the indicated number, but this is the amount of water injected into the stone grinder, This is due to the result of changing within the configuration range of the present invention. The main mechanical devices used in this embodiment are as follows.
【００２３】（１） 一次研石機 外殻ロータリードラムの内径：２０００mmφ 外殻ロータリードラムの長さ：３４００mm 外殻ロータリードラムの回転数：１４〜１８ｒｐｍ ローターの外径 １１００ｍｍφ ローターの回転数：１５０〜２００ ｒｐｍ （２） 二次研石機 外殻ロータリードラムの内径：１８００mmφ 外殻ロータリードラムの長さ：２０００mm 外殻ロータリードラムの回転数：１４〜１８ｒｐｍ ローターの外径 ９００ｍｍφ ローターの回転数：１５０〜２５０ｒｐｍ （３） サイクロン分級機 スピプットノズル径：１００mmφ 供給量：１．６〜３ｍ3 ／min 分級点：５０〜１００Ｄ５０μ サイクロン径：４２５mmφ。(1) Primary stone grinding machine Inner diameter of outer shell rotary drum: 2000 mmφ Length of outer shell rotary drum: 3400 mm Number of rotations of outer shell rotary drum: 14-18 rpm Outer diameter of rotor 1100 mmφ Number of rotations of rotor: 150- 200 rpm (2) Secondary grinding machine Inner diameter of outer shell rotary drum: 1800 mmφ Length of outer shell rotary drum: 2000 mm Number of rotations of outer shell rotary drum: 14-18 rpm Outer diameter of rotor 900 mmφ Number of rotations of rotor: 150- 250 rpm (3) Cyclone classifier Sputt nozzle diameter: 100 mmφ Supply amount: 1.6-3 m 3 / min Classification point: 50-100D50μ Cyclone diameter: 425 mmφ.
【００２４】トラックで搬入された原料は、原料ホッパ
ー１に投入され、バイブロフィーダー２を経て磁石選別
機３で鉄筋などが除去され、一次研石機４に水とともに
投入される。The raw material carried by the truck is charged into a raw material hopper 1, a vibratory feeder 2 is used to remove a reinforcing bar or the like by a magnet sorter 3, and is then charged into a primary grinding stone machine 4 together with water.
【００２５】原料（図では「粗破砕コンクリート廃材」
と記す）１００ｖに対し３０ｖ乃至８０ｖの水が一次研
石機４に投入され、研石されながら排出口から排出（以
下、排出される原料を「排出骨材」という）される。上
記排出口にはトロンメル篩いが（図２参照）連接され、
ここで１０ｖの水が噴射されてシルトが洗い落とされ、
篩いには５０ｖの排出骨材が残存する。Raw material (in the figure, "coarse crushed concrete waste material")
30 v to 80 v of water for 100 v is supplied to the primary stone crusher 4 and discharged from the discharge port while being honed (hereinafter, the discharged raw material is referred to as “discharged aggregate”). A trommel sieve (see FIG. 2) is connected to the outlet,
Here, 10v of water is sprayed to wash off the silt,
50 V of the discharged aggregate remains on the sieve.
【００２６】一次研石機４を出てトロンメル篩いをでた
排出骨材は、４５ｖの水が噴射されながら比重選別機５
を通過し、この間で浮遊物が除去される。次いで２９ｖ
乃至３８ｖの水を供給しながら二次研石機６に投入さ
れ、再度研石されながら排出口から排出される。ここで
の排出骨材の量は変化せず、水量のみ３９ｖ乃至４８ｖ
となる。The discharged aggregate that has exited the primary grinding machine 4 and passed through the trommel sieve is subjected to a specific gravity sorter 5 while spraying 45 V of water.
Through which airborne material is removed. Then 29v
The water is supplied to the secondary stone crusher 6 while supplying water of about 38 V, and is discharged from the outlet while being honed again. The amount of the aggregate discharged here does not change, and only the water amount is 39v to 48v.
Becomes
【００２７】引き続き排出骨材は、２５ｖの水を噴射さ
れながら砂利選別篩い７にかけられ水２ｖを含む砂利
（大）１８ｖと、水３ｖを含む砂利（中）２９ｖの再生
砂利が排出される。Subsequently, the discharged aggregate is passed through a gravel sorting sieve 7 while being sprayed with 25 v of water, and a reclaimed gravel of 18 g of gravel (large) containing 2 v of water and 29 v of gravel (medium) containing 3 v of water is discharged.
【００２８】前述の一次研石機４に付設されたトロンメ
ル篩い、比重選別機５および砂利選別篩い７を通過した
砂、シルトおよび水はサイクロンフィードタンク８に流
入する。その流入量は砂・シルトが６０ｖ、水１３４ｖ
乃至１９３ｖである。The sand, silt and water that have passed through the trommel sieve, the specific gravity sorter 5 and the gravel sorter 7 attached to the primary stone crusher 4 flow into the cyclone feed tank 8. The inflow volume is 60v for sand / silt and 134v for water
To 193v.
【００２９】サイクロンフィードタンク８に流入した
砂、シルトおよび水は、サイクロンフィードポンプ９に
よってサイクロン分級機１０に送られ、砂とシルトに分
級される。下降側に分級されたものは砂５１ｖ、シルト
２ｖおよび水３２ｖ乃至４６ｖで、これは更に１８ｖの
水を散水されながら砂選別篩い１１で洗浄分級されて水
１２ｖを含み、僅かなシルト１ｖが残存する砂５１ｖが
製品として得られる。The sand, silt and water flowing into the cyclone feed tank 8 are sent to a cyclone classifier 10 by a cyclone feed pump 9 and classified into sand and silt. On the descending side, sand 51v, silt 2v and water 32v to 46v are further washed and classified by the sand sorting sieve 11 while spraying 18v of water, and contain 12v of water, and a little silt 1v remains. Sand 51v is obtained as a product.
【００３０】サイクロン分級機１０の噴流側に分級され
たシルト７ｖと水１０２ｖ乃至１４７ｖは、中間タンク
１６を経て原水槽１２に流入する。一方、砂選別篩い７
を通過したシルト１ｖと水３８ｖ乃至５２ｖも原水槽１
２に流入する。原水槽に合流したシルト８ｖと水１０８
ｖ乃至１５３ｖはシックナースピゴット１４でシルトが
沈降し、その底からシルト引き抜きポンプによってシル
ト８ｖ、水３２ｖ乃至４６ｖの状態で引き抜かれ沈澱池
でシルトを沈澱させ泥塊として回収される。一方、シッ
クナースピゴット１４をオーバーフローした水１０８ｖ
乃至１５３ｖは清水槽に集められ上記各工程の給水用と
して再利用される。The silt 7v and the water 102v to 147v classified on the jet side of the cyclone classifier 10 flow into the raw water tank 12 through the intermediate tank 16. On the other hand, sand sorting sieve 7
1v of silt and 38v to 52v of water that passed through
Flow into 2. Silt 8v and water 108 that merged into the raw water tank
Silts from v to 153 v are settled by the thickener spigot 14, and the silt is pulled out from the bottom thereof in a state of silt 8 v and water 32 v to 46 v by a silt drawing pump. On the other hand, water 108v overflowing the thickener spigot 14
153v to 153v are collected in a fresh water tank and reused for water supply in each of the above steps.
【００３１】[0031]
【発明の効果】以上の説明から明らかなように、研石機
に原料と水とを特定の比率で投入することにより効果的
に骨材表面の凝結セメント成分が剥離除去され、上記工
程の後段で発生する砂およびシルトを含むスラリーはサ
イクロン分級によって砂とシルトに高精度で効率よく分
級され、さらに、比重選別機を付設することによりシル
トを含む比重の小さい余物を効果的に除去されて効率よ
く良質の再生コンクリート骨材を得ることを可能にし
た。As is evident from the above description, the concrete cement component on the aggregate surface can be effectively separated and removed by introducing the raw material and water at a specific ratio into the honing machine. Slurry containing sand and silt generated in the process is classified into sand and silt with high precision and efficiency by cyclone classification, and furthermore, by installing a specific gravity separator, the residual material with small specific gravity including silt is effectively removed. It has made it possible to obtain high quality recycled concrete aggregate efficiently.
【図１】この発明で使用する研石機の要部横断面図FIG. 1 is a cross-sectional view of a main part of a grinding machine used in the present invention.
【図２】同正面図FIG. 2 is a front view of the same.
【図３】堰板部の横断面図FIG. 3 is a cross-sectional view of a weir plate portion.
【図４】この発明に係る実施形態の工程図（その１）FIG. 4 is a process diagram (part 1) of the embodiment according to the present invention.
【図５】同（その２）FIG. 5 (Part 2)
【図６】同各工程のバランスシート（その１）FIG. 6 is a balance sheet of each process (part 1).
【図７】同（その２）FIG. 7 (part 2)
１ 原料ホッパー ２ バイブロフィーダー ３ 磁石選別機 ４ 一次研石機 ５ 比重選別機 ６ 二次研石機 ７ 砂利選別篩い ８ サイクロンフィードタンク ９ サイクロンフィードポンプ １０ サイクロン分級機 １１ 砂選別篩い １２ 原水槽 １３ 凝集剤注入手段 １４ シックナースピゴット １５ シルト引き抜きポンプ １６ 中間タンク ２１ 研石用ブレード（外殻ロータリードラムの） ２２ 外殻ロータリードラム ２３ アンダーローラー ２４ 平歯車 ２５ モーター ２６ ピニオン ２７ ホッパー ２８ 金網筒（トロンメル篩い） ３１ 研石用ブレード（ローターの） ３２ ローター ３３ 軸受け ３４ 回転軸 ３５ 堰板 DESCRIPTION OF SYMBOLS 1 Raw material hopper 2 Vibro feeder 3 Magnet sorter 4 Primary stone crusher 5 Specific gravity sorter 6 Secondary stone crusher 7 Gravel sorter 8 Cyclone feed tank 9 Cyclone feed pump 10 Cyclone classifier 11 Sand sorter 12 Raw water tank 13 Agglomeration Injection means 14 Thickener spigot 15 Silt extraction pump 16 Intermediate tank 21 Blade for grinding stone (of outer shell rotary drum) 22 Outer shell rotary drum 23 Under roller 24 Spur gear 25 Motor 26 Pinion 27 Hopper 28 Wire mesh tube (Trommel sieve) 31 Grinding blade (of rotor) 32 Rotor 33 Bearing 34 Rotation axis 35 Weir plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 堀之内 春行 大阪市港区弁天５丁目４番13号 株式会社 堀之内内 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Harunouchi Haruuchi 5-4-113 Benten, Minato-ku, Osaka-city Horinouchi Co., Ltd.
Claims (3)
た外殻ロータリードラムと、その外殻ロータリードラム
の内部に、外周面に多数の研石用ブレードを配設したロ
ーターを、上記外殻ロータリードラムの回転と逆方向に
回転するように、かつ、ローターの回転軸の位置が、外
殻ロータリードラム回転軸の垂線より、その回転方向下
手側に位置するように配置し、外殻ロータリードラムの
投入口・排出口に堰板を設けてなる装置を用いてコンク
リート骨材を再生する方法において、 上記装置に、粗破砕したコンクリート廃材と水とを、１
００：２５乃至１００の重量比で投入しながら骨材表面
の付着物を剥離除去することを特徴とするコンクリート
骨材再生方法。An outer shell rotary drum having a number of grinding stones disposed on an inner peripheral surface thereof, and a rotor having a number of grinding stones disposed on an outer peripheral surface thereof inside the outer shell rotary drum. It is arranged so that it rotates in the opposite direction to the rotation of the outer shell rotary drum, and the position of the rotation axis of the rotor is located on the lower side in the rotation direction from the perpendicular of the rotation axis of the outer shell rotary drum. In a method for regenerating concrete aggregate using a device provided with a weir plate at an inlet and an outlet of a shell rotary drum, the above-mentioned device comprises:
A method for regenerating a concrete aggregate, characterized in that adhering substances on the surface of the aggregate are peeled and removed while being charged at a weight ratio of 00:25 to 100.
て、上記工程の後段に、サイクロン分級工程、上記サイ
クロン分級工程で噴流側に分級された凝結セメント成分
の微粉を収集・捕捉し、沈澱させる工程を付加してなる
ことを特徴とする請求項１に記載のコンクリート骨材再
生方法。2. The method for recycling aggregate concrete according to claim 2, further comprising a cyclone classification step, a step of collecting, capturing, and precipitating the fine powder of the set cement component classified to the jet side in the cyclone classification step. The method for regenerating concrete aggregate according to claim 1, wherein the method is performed.
て、上記骨材表面の付着物を剥離除去する工程の後段
で、付着物剥離除去済み固・液混濁物に散水しながら凝
結セメント成分および浮遊成分を除去する工程を付加し
てなることを特徴とする請求項１または２に記載のコン
クリート骨材再生方法。3. In the above-mentioned concrete aggregate regenerating method, in the latter stage of the step of peeling and removing the deposits on the surface of the aggregate, the set cement component and the floating component are dispersed while water is sprayed on the solid / liquid turbid matter from which the deposits have been removed. The method for recycling concrete aggregate according to claim 1 or 2, further comprising a step of removing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14672597A JPH10338558A (en) | 1997-06-04 | 1997-06-04 | Method for regenerating concrete aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14672597A JPH10338558A (en) | 1997-06-04 | 1997-06-04 | Method for regenerating concrete aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10338558A true JPH10338558A (en) | 1998-12-22 |
Family
ID=15414164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14672597A Pending JPH10338558A (en) | 1997-06-04 | 1997-06-04 | Method for regenerating concrete aggregate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10338558A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100643655B1 (en) | 2005-10-20 | 2006-11-10 | 태성개발(주) | Manufacturing method of aggregate and its apparatus for recycling construction waste material |
| JP2006320814A (en) * | 2005-05-18 | 2006-11-30 | Eacle Kk | Manufacturing method of recycled fine aggregate, and recycled fine aggregate |
| KR101011666B1 (en) | 2010-08-26 | 2011-01-31 | 정수영 | Granulator |
| KR101199631B1 (en) | 2012-07-27 | 2012-12-11 | 유한회사 강성산업개발 | Mortar exfoliation device for recycled aggregates |
| CN111333388A (en) * | 2020-03-27 | 2020-06-26 | 江苏昆腾新材料科技有限公司 | Environment-friendly concrete for shield segment pouring and preparation process thereof |
| CN113019648A (en) * | 2021-03-02 | 2021-06-25 | 合肥水泥研究设计院有限公司 | High-efficient preparation system of abandonment concrete regeneration sand powder |
| CN113145532A (en) * | 2021-01-29 | 2021-07-23 | 张明宇 | High-pressure cleaning and crushing integrated equipment for recycling and preprocessing aquatic organism shells |
-
1997
- 1997-06-04 JP JP14672597A patent/JPH10338558A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320814A (en) * | 2005-05-18 | 2006-11-30 | Eacle Kk | Manufacturing method of recycled fine aggregate, and recycled fine aggregate |
| KR100643655B1 (en) | 2005-10-20 | 2006-11-10 | 태성개발(주) | Manufacturing method of aggregate and its apparatus for recycling construction waste material |
| KR101011666B1 (en) | 2010-08-26 | 2011-01-31 | 정수영 | Granulator |
| KR101199631B1 (en) | 2012-07-27 | 2012-12-11 | 유한회사 강성산업개발 | Mortar exfoliation device for recycled aggregates |
| CN111333388A (en) * | 2020-03-27 | 2020-06-26 | 江苏昆腾新材料科技有限公司 | Environment-friendly concrete for shield segment pouring and preparation process thereof |
| CN111333388B (en) * | 2020-03-27 | 2022-01-25 | 江苏昆腾新材料科技有限公司 | Environment-friendly concrete for shield segment pouring and preparation process thereof |
| CN113145532A (en) * | 2021-01-29 | 2021-07-23 | 张明宇 | High-pressure cleaning and crushing integrated equipment for recycling and preprocessing aquatic organism shells |
| CN113019648A (en) * | 2021-03-02 | 2021-06-25 | 合肥水泥研究设计院有限公司 | High-efficient preparation system of abandonment concrete regeneration sand powder |
| CN113019648B (en) * | 2021-03-02 | 2024-04-30 | 合肥水泥研究设计院有限公司 | High-efficient preparation system of abandonment concrete regeneration sand powder |
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