JP2003190827A - Production method for regenerated aggregate - Google Patents

Production method for regenerated aggregate

Info

Publication number
JP2003190827A
JP2003190827A JP2001397364A JP2001397364A JP2003190827A JP 2003190827 A JP2003190827 A JP 2003190827A JP 2001397364 A JP2001397364 A JP 2001397364A JP 2001397364 A JP2001397364 A JP 2001397364A JP 2003190827 A JP2003190827 A JP 2003190827A
Authority
JP
Japan
Prior art keywords
sieve
grinding
less
aggregate
drum body
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
Application number
JP2001397364A
Other languages
Japanese (ja)
Inventor
Shigeo Yanase
茂夫 柳瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daito Doboku Ltd
Original Assignee
Daito Doboku Ltd
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 Daito Doboku Ltd filed Critical Daito Doboku Ltd
Priority to JP2001397364A priority Critical patent/JP2003190827A/en
Publication of JP2003190827A publication Critical patent/JP2003190827A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/026Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • 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
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production method for regenerated aggregate which enables the utilization as either aggregate for concrete or asphalt by stripping mortal coating and pitch coating by means of grinding even in the case of using concrete waste material or asphalt waste material as raw material. <P>SOLUTION: In this method, the raw material comprising concrete waste material or asphalt waste material is crushed to a prescribed particle size or less, the raw material which is crushed to the prescribed particle size or less is ground and, thereby, a regenerated aggregate is produced. Therein, the grinding of the raw material is performed by a grinder which is composed of a drum body, a rotation shaft penetrating the inside of the drum body in the shaft direction of the drum body, partition members which are attached to the rotation shaft by keeping an inclined angle, partition the inside of the drum body and form plural grinding chambers mutually communicated in the drum body, and charged material for grinding which is charged into the grinding chambers, repeats elevating and falling movement by rotating the partition members and reciprocatively moves in the shaft length direction of the rotation shaft. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、再生骨材の製造方
法に係り、その目的はコンクリート廃材やアスファルト
廃材を原料としてもモルタル被膜やピッチ被膜を磨砕に
よって剥離して有効な骨材として、コンクリート用又は
アスファルト用どちらの骨材としても有効に利用可能
で、日本工業規格で定められている再生骨材としての強
度や吸水率等の品質を満たす再生骨材を得ることができ
る再生骨材の製造方法を提供することにある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing recycled aggregate, the purpose of which is to use concrete waste material or asphalt waste material as a raw material, and to remove the mortar coating or pitch coating by grinding to provide an effective aggregate. Recycled aggregate that can be effectively used as either aggregate for concrete or asphalt and that can satisfy the strength and water absorption rate of recycled aggregate stipulated by Japanese Industrial Standards. It is to provide a manufacturing method of.

【0002】[0002]

【従来の技術】建造物の解体や改築等の実施に伴い各地
で大量のコンクリート廃材、道路工事等によりアスファ
ルト廃材が発生する。このようなコンクリート廃材やア
スファルト廃材の約半分は道路舗装用路盤材や埋め戻し
材等に再利用されているが、その再利用される量には限
度があり、残りは殆どが廃棄処分にされ、主に埋め立て
処理されているが、近年では周辺環境に与える影響、廃
棄処理に係わるコストの上昇等の諸問題が発生し、従来
廃棄処分されていたコンクリート廃材やアスファルト廃
材を再資源として、今まで以上に有効に活用することが
考えられている。発生したコンクリート廃材やアスファ
ルト廃材は、多量の骨材を含有し、骨材の中でも砂利、
河砂等の良質の天然骨材は枯渇しつつあって、また自然
環境保護の点からも採取が困難になっており、骨材資源
の枯渇問題解消とコンクリート廃材やアスファルト廃材
の有効活用の両面から、資源の有効再利用及び廃棄物の
減容化の目的でこれらコンクリート廃材やアスファルト
廃材の骨材を回収して再生骨材が製造されている。
2. Description of the Related Art A large amount of concrete waste materials and road asphalt waste materials are generated in various places along with the dismantling and reconstruction of buildings. About half of such concrete waste materials and asphalt waste materials are reused for road paving roadbed materials, backfill materials, etc., but the amount of reuse is limited, and most of the rest is discarded. Although it is mainly landfilled, in recent years various problems such as the impact on the surrounding environment and the increase in costs related to waste treatment have occurred, and now concrete waste materials and asphalt waste materials that were previously disposed of are recycled as resources. Is considered to be used more effectively than ever. The generated concrete waste materials and asphalt waste materials contain a large amount of aggregate, and among the aggregates, gravel,
High-quality natural aggregates such as river sand are being depleted, and it is difficult to collect them from the viewpoint of protecting the natural environment. Both the problem of exhaustion of aggregate resources is solved and the effective use of concrete and asphalt wastes For the purpose of effective reuse of resources and reduction of waste volume, recycled aggregates are manufactured by collecting aggregates of these concrete waste materials and asphalt waste materials.

【0003】従来の再生骨材の製造方法としては、一般
にコンクリートの廃材を破砕設備で破砕し、骨材とする
方法、又はボールミル粉砕機を用いてコンクリート廃材
から骨材を得る方法が採用されている。
As a conventional method for producing recycled aggregate, a method of crushing concrete waste material with a crushing facility to obtain aggregate material, or a method of obtaining aggregate material from concrete waste material by using a ball mill grinder is adopted. There is.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、コンク
リート廃材の破砕、又はボールミル粉砕機による粉砕に
よって得られた再生骨材にはモルタル分が付着してお
り、モルタル分は吸水の原因となり再生骨材の吸水率が
高くなり、コンクリート用の骨材として用いた場合コン
クリートの強度が著しく低下し、またすりへり減量も大
きいという課題が存在し、アスファルト用の骨材として
用いた場合、モルタル分はアルカリ性であるため骨材が
アスファルトに分散一体化しないという課題が存在し
た。アスファルト廃材の破砕、又はボールミル粉砕機に
よる粉砕によって得られた再生骨材の表面にはピッチ被
膜が形成されており、このような再生骨材をコンクリー
ト用の骨材として用いる場合、ピッチ被膜の油分が原因
でコンクリート強度が出ず、通常の骨材に比べると強度
的にかなり低く脆弱となり、骨材として再利用するとコ
ンクリートの強度が著しく低下し建築物等の構造体に使
用可能な、コンクリート用骨材の日本工業規格の品質規
定を満足することができないという課題が存在した。
However, the mortar content adheres to the recycled aggregate obtained by crushing the concrete waste material or crushing with a ball mill, and the mortar content causes water absorption and causes There is a problem that the water absorption rate becomes high, the strength of concrete decreases remarkably when used as an aggregate for concrete, and the amount of abrasion loss is also large, and when used as an aggregate for asphalt, the mortar content is alkaline Therefore, there was a problem that the aggregate did not disperse and integrate into the asphalt. A pitch coating is formed on the surface of the recycled aggregate obtained by crushing asphalt waste material or crushing with a ball mill, and when such recycled aggregate is used as aggregate for concrete, the oil content of the pitch coating is reduced. The strength of concrete does not come out due to the fact that it is much weaker than ordinary aggregate and becomes brittle, and when reused as aggregate, the strength of concrete remarkably decreases and it can be used for structures such as buildings. There was a problem that the quality standards of the Japanese Industrial Standards for aggregate could not be satisfied.

【0005】本発明は、上記課題を解決するためになさ
れたものであって、コンクリート廃材又はアスファルト
廃材を原料としてもモルタル被膜やピッチ被膜を磨砕に
よって剥離して有効な骨材として、コンクリート用又は
アスファルト用どちらの骨材としても利用可能で、日本
工業規格で定められている再生骨材としての強度や吸水
率等の品質を満たす再生骨材を得ることができる再生骨
材の製造方法を提供することにある。
The present invention has been made in order to solve the above-mentioned problems, and even when a concrete waste material or an asphalt waste material is used as a raw material, the mortar coating or pitch coating is removed by grinding to be an effective aggregate for concrete. Alternatively, a method of manufacturing recycled aggregate that can be used as either aggregate for asphalt and that can obtain recycled aggregate satisfying quality such as strength and water absorption rate as the recycled aggregate stipulated in Japanese Industrial Standards. To provide.

【0006】[0006]

【課題を解決するための手段】請求項1の発明は、コン
クリート廃材又はアスファルト廃材からなる原料を破砕
設備で破砕し、破砕処理により得た破砕物を40mmの
ふるいでふるい分けをし、40mmのふるいを通過しな
かったものは再度破砕機による破砕処理を行い、該粒径
40mm未満に破砕された原料を磨砕することにより再
生骨材を製造する方法であって、該原料の磨砕がドラム
体と、このドラム体内を該ドラム体の軸方向に貫く回転
軸と、この回転軸に対し傾斜した角度で取り付けられ前
記ドラム体内を区画して該ドラム体内に相互に連通する
複数の磨砕室を形成する仕切部材と、前記磨砕室内に装
填された磨砕用装填材とから構成され、前記磨砕用装填
材は、前記仕切部材が回転することによって上昇落下運
動を繰り返し且つ回転軸の軸長方向に往復運動する磨砕
機によって行われることを特徴とする再生骨材の製造方
法に関する。請求項2の発明は、前記磨砕機による磨砕
処理により得た磨砕物を25mmのふるいでふるい分け
をし、25mmのふるいを通過しなかったものは再度前
記磨砕機による磨砕処理を行い、25mmのふるいを通
過したものは更に10mmのふるいでふるい分けをし、
粒径が10mm未満の再生骨材と粒径が10mmを超え
て25mm未満の再生骨材とに分別し、粒径が10mm
未満の磨砕物をコンクリート用の再生砂、粒径が10m
mを超えて25mm未満の磨砕物をコンクリート用の骨
材として回収することを特徴とする請求項1記載の再生
骨材の製造方法に関する。請求項3の発明は、前記磨砕
機による磨砕処理により得た磨砕物を粒径20mmのふ
るいでふるい分けをし、20mmのふるいを通過しなか
ったものは再度前記磨砕機による磨砕処理を行い、20
mmのふるいを通過したものは13mmのふるいでふる
い分けをし、13mmのふるいを通過した、粒径が13
mm未満の磨砕物は更に5mmのふるいでふるい分けを
し、13mmのふるいを通過しなかった13mmを超え
て20mm未満の磨砕物は5号砕石として回収し、5m
mのふるいを通過しなかった5mmを超えて13mm未
満の再生骨材は6号砕石として回収し、5mmのふるい
を通過した5mm未満の磨砕物を7号砕石として回収す
ることを特徴とする請求項1記載の再生骨材の製造方法
に関する。
The invention according to claim 1 is to crush a raw material made of concrete waste material or asphalt waste material in a crushing facility, and crush the crushed material obtained by crushing treatment with a 40 mm sieve to obtain a 40 mm sieve. Those which do not pass through are subjected to a crushing treatment by a crusher again, and a raw material crushed to a particle size of less than 40 mm is crushed to produce a recycled aggregate. Body, a rotary shaft that penetrates the drum body in the axial direction of the drum body, and a plurality of grinding chambers that are attached at an angle inclined with respect to the rotary shaft and partition the drum body to communicate with each other in the drum body. A partitioning member that forms a slab and a grinding material loaded into the grinding chamber, and the grinding material repeats an ascending / descending movement as the partitioning member rotates. Method for producing recycled aggregate, characterized in that it is made by attritor which reciprocates in the axial direction of the rolling axis about. According to the invention of claim 2, the ground material obtained by the grinding processing by the grinding machine is sieved with a 25 mm sieve, and if the grinding material is not passed through the 25 mm sieve, the grinding processing is performed again by the grinding machine to obtain 25 mm. What passed through the No. Sieve is further sifted with a 10 mm sieve,
Recycled aggregate with a particle size of less than 10 mm and recycled aggregate with a particle size of more than 10 mm and less than 25 mm are separated to have a particle size of 10 mm.
Regrind sand for concrete, grain size less than 10m
The method for producing a recycled aggregate according to claim 1, wherein a ground material having a size of more than m and less than 25 mm is recovered as an aggregate for concrete. According to the invention of claim 3, the ground product obtained by the grinding process by the grinding machine is sieved with a sieve having a particle diameter of 20 mm, and if it does not pass through the 20 mm sieve, the grinding process is performed again by the grinding machine. , 20
After passing through a 13 mm sieve, it was sieved with a 13 mm sieve, and passed through a 13 mm sieve.
The ground material of less than mm is screened with a 5 mm sieve, and the ground material of more than 13 mm and less than 20 mm that did not pass through the 13 mm sieve is recovered as No. 5 crushed stone and 5 m.
Reclaimed aggregate having a diameter of more than 5 mm and less than 13 mm that has not passed through a sieve of m is recovered as No. 6 crushed stone, and an abraded material of less than 5 mm having passed through a 5 mm sieve is recovered as No. 7 crushed stone. Item 1. A method for producing a recycled aggregate according to item 1.

【0007】[0007]

【発明の実施の形態】以下、本発明に係る再生骨材製造
方法について、図面を参照しつつ説明する。図1、図2
は、本発明の実施形態の一例を示す工程説明図である。
図3は本発明において用いられる磨砕機の縦断面図であ
り、図4は、本発明における仕切部材の左右方向(回転
軸の軸長方向)の動きを示す図であり、図5は磨砕物が
通過する、仕切部材の導通孔を示している。本発明はコ
ンクリート廃材又はアスファルト廃材からなる原料を破
砕する工程と磨砕する工程とからなり、該磨砕工程の完
了後、コンクリート廃材からの再生骨材はモルタル被膜
が剥離され、又アスファルト廃材からのピッチ被膜も剥
離された良好な、コンクリート用又はアスファルト用ど
ちらの骨材としても利用することが可能な再生骨材が得
られる点に最大の特徴がある。
BEST MODE FOR CARRYING OUT THE INVENTION A method of manufacturing recycled aggregate according to the present invention will be described below with reference to the drawings. 1 and 2
FIG. 4 is a process explanatory view showing an example of an embodiment of the present invention.
FIG. 3 is a vertical cross-sectional view of a grinder used in the present invention, FIG. 4 is a view showing a movement of a partition member in the left-right direction (axial length direction of a rotary shaft) in the present invention, and FIG. 5 is a ground product. 3 shows a through hole of the partition member through which the passage. The present invention consists of a step of crushing a raw material consisting of concrete waste material or asphalt waste material and a step of grinding, and after the completion of the grinding step, the recycled aggregate from the concrete waste material has the mortar coating peeled off, and the asphalt waste material The greatest feature is that a good recycled aggregate can be obtained in which the pitch coating of (2) is peeled off and can be used as an aggregate for concrete or asphalt.

【0008】図1、図2は本発明の実施形態の一例を示
す工程説明図である。本発明におけるコンクリート廃材
(図示しない)又はアスファルト廃材(図示しない)の
発生源や採取法は特に限定されないが、一般には建造物
の解体や改良、改築等により発生した廃材からコンクリ
ート廃材、道路工事等により発生したアスファルト廃材
を任意の手段で採取する。採取されたコンクリート廃材
又はアスファルト廃材からなる原料は破砕設備(20)
へ送られて破砕される。破砕設備(20)はコンクリー
ト廃材やアスファルト廃材の大きさに応じて適宜選定す
れば良く、特に限定はされないが、一例として大型廃材
であればジョークラッシャーやジャイレトリークラッシ
ャー、比較的小型の廃材であればインパクトクラッシャ
ーやコーンクラッシャー等を用いると破砕粒径の制御が
比較的行い易い。破砕設備(20)において破砕された
原料は、ベルトコンベアからなる搬送設備(21)によ
りふるい分け設備(28)へと送られる。破砕処理によ
り得た破砕物を40mmのふるいでふるい分けをし、4
0mmのふるいを通過しなかったものは再度前記破砕機
による破砕処理を行い、ふるい分けされた、粒径が40
mm未満の原料は磨砕機(1)に送られる。尚、本発明
におけるふるい分け設備は特に限定はされず適宜任意の
ふるい分け設備を使用することができる。これは以下に
記載のふるい分け設備においても同様である。
1 and 2 are process explanatory views showing an example of an embodiment of the present invention. The source and sampling method of the concrete waste material (not shown) or asphalt waste material (not shown) in the present invention are not particularly limited, but generally, from waste materials generated by dismantling, improvement, remodeling of buildings, etc., concrete waste materials, road construction, etc. Collect the asphalt waste generated by the method by any means. Crushing equipment for collected raw materials made of concrete waste or asphalt waste (20)
Sent to and crushed. The crushing equipment (20) may be appropriately selected according to the size of the concrete waste material or the asphalt waste material, and is not particularly limited. For example, if it is a large waste material, a jaw crusher, a gyratory crusher, or a relatively small waste material is used. If there is an impact crusher or cone crusher, it is relatively easy to control the crushed particle size. The raw material crushed in the crushing equipment (20) is sent to the sieving equipment (28) by the transfer equipment (21) including a belt conveyor. The crushed material obtained by the crushing process is sieved with a 40 mm sieve and 4
Those which did not pass through the 0 mm sieve were subjected to the crushing treatment by the above-mentioned crusher again, and were sieved to have a particle size of 40.
Raw materials less than mm are sent to the grinder (1). The sieving equipment in the present invention is not particularly limited, and any sieving equipment can be appropriately used. This also applies to the sieving equipment described below.

【0009】尚、本発明における搬送設備(21)とし
てはベルトコンベアが好適に使用されるが特に限定はさ
れず適宜任意の搬送設備を使用することができる。これ
は以下に記載の搬送設備についても同様である。図3、
図4で示される様に、本発明で使用される磨砕機(1)
はドラム体(2)と、回転軸(3)と、仕切部材(4)
と、磨砕用装填材(5)とから構成されている。ドラム
体(2)の一端部には原料を取り入れる導入口(7)が
設けられ、ドラム体(2)の他端部には磨砕後の原料を
排出する排出口(8)が設けられている。導入口(7)
には、原料の投入用ホッパ(9)が接続されている。排
出口(8)は、ドラム体(2)の周壁部の前記他端部に
複数個形成されている。
A belt conveyor is preferably used as the transfer equipment (21) in the present invention, but it is not particularly limited, and any transfer equipment can be used as appropriate. This also applies to the transportation equipment described below. Figure 3,
As shown in FIG. 4, the grinder (1) used in the present invention.
Is a drum body (2), a rotating shaft (3), and a partition member (4)
And a grinding charge (5). The drum body (2) is provided with an inlet (7) for taking in the raw material at one end, and the other end of the drum body (2) is provided with an outlet (8) for discharging the raw material after grinding. There is. Inlet (7)
A raw material feeding hopper (9) is connected to the. A plurality of discharge ports (8) are formed at the other end of the peripheral wall of the drum body (2).

【0010】図3に示す例では、ドラム体(2)の両端
にそれぞれ回転しない端面板(18)が設けられ、ドラ
ム体(2)は、この端面板(18)の周面に設けたベア
リング(19)を介して回転するようになっている。導
入口(7)は、一方の端面板(18)に形成されてい
る。回転軸(3)は、ドラム体(2)内を該ドラム体
(2)の軸長方向に貫くように設けられている。回転軸
(3)が回転する向きと、ドラム体(2)が回転する向
きは、相互に逆向きとされる。
In the example shown in FIG. 3, non-rotating end plates (18) are provided at both ends of the drum body (2), and the drum body (2) has bearings provided on the peripheral surface of the end plate (18). It is designed to rotate via (19). The introduction port (7) is formed in one end face plate (18). The rotary shaft (3) is provided so as to penetrate the inside of the drum body (2) in the axial direction of the drum body (2). The direction in which the rotary shaft (3) rotates and the direction in which the drum body (2) rotates are opposite to each other.

【0011】仕切部材(4)は、回転軸(3)に該回転
軸(3)に対し傾斜した角度で取り付けられている。こ
の仕切部材(4)は、ドラム体(2)内を区画し、該ド
ラム(2)内に相互に連通する複数の磨砕室(11)を
形成する。磨砕室(11)同士は連通しているが、この
連通部分は、磨砕用装填材(5)が通過しない大きさと
されている。
The partition member (4) is attached to the rotary shaft (3) at an angle inclined with respect to the rotary shaft (3). The partition member (4) partitions the inside of the drum body (2) and forms a plurality of grinding chambers (11) communicating with each other inside the drum (2). The grinding chambers (11) are in communication with each other, but the size of this communication portion is such that the grinding material (5) does not pass through.

【0012】図5に示す例では、仕切部材(4)は、原
料を通す導通孔(12)を有している。この導通孔(1
2)が磨砕室(11)同士の前記連通部分に相当する。
導通孔(12)の大きさは、所定寸法未満になるまで磨
砕された原料のみを通す大きさとされている。
In the example shown in FIG. 5, the partition member (4) has a through hole (12) through which the raw material passes. This through hole (1
2) corresponds to the communicating portion between the grinding chambers (11).
The size of the through hole (12) is such that only the ground material is passed through until it becomes less than a predetermined size.

【0013】仕切部材(4)の数は特に限定されず、1
枚であってもよいし、或いは複数枚であってもよい。仕
切部材(4)を1枚とした場合は、仕切部材(4)を挟
む両側にそれぞれ磨砕室(11)が形成される。図3、
図4に例示する如く仕切部材(4)を回転軸(3)の軸
長方向に相互に間隔をあけて複数枚設けた場合は、仕切
部材(4)同士の間にそれぞれ磨砕室(11)が形成さ
れる。装填材(5)は、各磨砕室(11)内に複数個装
填される。装填材(5)は、通常、金属製のボールであ
る。傾斜状態で配設された仕切部材(4)が回転するこ
とにより、装填材(5)は磨砕室(11)内で跳躍し、
原料と衝突する。このとき、原料の磨砕が行なわれる。
The number of partition members (4) is not particularly limited, and 1
It may be a single sheet or a plurality of sheets. When the number of partition members (4) is one, grinding chambers (11) are formed on both sides of the partition member (4). Figure 3,
When a plurality of partition members (4) are provided at intervals in the axial direction of the rotating shaft (3) as illustrated in FIG. 4, the grinding chamber (11) is provided between the partition members (4). ) Is formed. A plurality of loading materials (5) are loaded in each grinding chamber (11). The charge (5) is usually a metal ball. By rotating the partition member (4) arranged in an inclined state, the charging material (5) jumps in the grinding chamber (11),
Collide with raw materials. At this time, the raw material is ground.

【0014】本発明で用いられる磨砕機においては、こ
の装填材(5)の動きに特徴がある。仕切部材(4)が
回転軸(3)に対し傾斜した角度で設けられているの
で、仕切部材(4)は、ドラム体(2)の側方から見て
(図4参照)、ある瞬間では右下がりの状態となり(実
線部参照)、次の瞬間には左下がりの状態となり(二点
鎖線部参照)、傾く方向が回転軸(3)の軸長方向に常
時変化する。これに伴い、回転軸(3)を中心として磨
砕室(11)は非常に速いスピードで回転軸(3)の軸
長方向に揺動することになる。
The grinder used in the present invention is characterized by the movement of the charging material (5). Since the partition member (4) is provided at an angle inclined with respect to the rotating shaft (3), the partition member (4) is seen from the side of the drum body (2) (see FIG. 4), and at a certain moment, It is in a state of falling to the right (see the solid line portion), and at the next moment, it is in the state of falling to the left (see the chain double-dashed line portion), and the tilting direction constantly changes in the axial direction of the rotating shaft (3). Along with this, the grinding chamber (11) swings around the rotating shaft (3) at a very fast speed in the axial direction of the rotating shaft (3).

【0015】この場合、磨砕室(11)内の装填材
(5)は、仕切部材(4)によって強く跳ね上げられ、
その後落下する。同時に磨砕室(11)が回転軸(3)
の軸長方向に素早く揺動するので、装填材(5)は回転
軸(3)の軸長方向に素早く往復運動する。これによ
り、装填材(5)及び原料はそれぞれ運動の向きが複雑
となって、これらは共回りしなくなり、装填材(5)と
原料の衝突回数が非常に多くなる。これにより、原料の
磨砕効率が大幅に向上し、短時間のうちに大量の原料を
所望の大きさまで磨砕処理することができる。
In this case, the loading material (5) in the grinding chamber (11) is strongly lifted up by the partition member (4),
Then it falls. At the same time, the grinding chamber (11) has a rotating shaft (3)
Since it rapidly oscillates in the axial direction, the loading material (5) quickly reciprocates in the axial direction of the rotating shaft (3). As a result, the directions of movements of the charging material (5) and the raw material become complicated, and they do not rotate together, and the number of collisions of the charging material (5) and the raw material becomes extremely large. Thereby, the grinding efficiency of the raw material is significantly improved, and a large amount of raw material can be ground to a desired size in a short time.

【0016】次に、本発明において用いられる磨砕機
(1)の動作について説明する。該磨砕機の動作とし
て、先ず、投入用ホッパ(9)から原料を投入する。す
ると、原料は上流側から数えて1つ目の磨砕室(11)
内に入る(図3参照)。仕切部材(4)が回転軸(3)
に対して傾斜しているので、仕切部材(4)は、前傾の
状態と後傾の状態を回転軸(3)の軸長方向に素早く繰
り返す。これにより、原料は上下方向に強く跳ね上げら
れた後落下し、その上昇落下が繰り返されるとともに、
回転軸(3)の軸長方向に素早く往復運動する。これに
より、原料は1つ目の磨砕室(11)内で磨砕処理され
る。
Next, the operation of the grinder (1) used in the present invention will be described. As the operation of the grinder, first, the raw material is charged from the charging hopper (9). Then, the raw material is the first grinding chamber (11) counting from the upstream side.
Enter inside (see Figure 3). The partition member (4) is the rotating shaft (3)
Since the partition member (4) is inclined with respect to, the partition member (4) rapidly repeats the forward tilted state and the backward tilted state in the axial direction of the rotating shaft (3). As a result, the raw material is strongly bounced up and down and then falls, and the rising and falling are repeated,
Quickly reciprocates in the axial direction of the rotary shaft (3). Thereby, the raw material is ground in the first grinding chamber (11).

【0017】1つ目の磨砕室(11)内である程度磨砕
処理されると、原料は上流側から数えて1枚目の仕切部
材(4)に設けた導通孔(12)を通過可能な大きさと
なる(図5参照)。そのような大きさとなった原料は導
通孔(12)を通過し、2つ目の磨砕室(11)内に入
る。2つ目の磨砕室(11)内には複数の装填材(5)
が入っており、これら装填材(5)は、傾斜した2枚の
仕切部材(4)に衝突することよって強く跳ね上げられ
た後落下し、その上昇落下が繰り返されるとともに、回
転軸(3)の軸長方向に素早く往復運動する。これによ
り、原料と装填材(5)の衝突が満遍なく且つ激しく行
なわれ、2つ目の磨砕室(11)内では効率よく磨砕処
理が行なわれ、原料の粒径は更に小さくなる。
After being ground to some extent in the first grinding chamber (11), the raw material can pass through the through hole (12) provided in the first partition member (4) counting from the upstream side. It has a large size (see FIG. 5). The raw material having such a size passes through the through hole (12) and enters the second grinding chamber (11). In the second grinding chamber (11) there are several loading materials (5)
These loading materials (5) are strongly bounced up by colliding two inclined partition members (4) and then fall, and the ascending / falling is repeated and the rotating shaft (3) Quickly reciprocates in the axial direction. As a result, the raw material and the charging material (5) are uniformly and violently collided with each other, the grinding process is efficiently performed in the second grinding chamber (11), and the particle size of the raw material is further reduced.

【0018】2つ目の磨砕室(11)内である程度磨砕
処理されると、原料は上流側から数えて2枚目の仕切部
材(4)に設けた導通孔(12)を通過可能な大きさと
なる。そのような大きさとなった原料は導通孔(12)
を通過し、3つ目の磨砕室(11)内に入る。2つ目の
磨砕室(11)内と同様の処理が3つ目、4つ目、・・
・の磨砕室(11)内でも行なわれ、所望の大きさにな
るまで原料は磨砕処理される。所望の粒径となった原料
は、ドラム体(2)の排出口(8)から排出される。以
上により磨砕工程が完了し、コンクリート廃材からの再
生骨材はモルタル被膜が剥離され、又アスファルト廃材
からのピッチ被膜も剥離された良好の再生骨材を得るこ
とができる。尚、上記磨砕処理は、原料を水と共に投入
する湿式処理でもよいし、水を使用しない乾式処理でも
良い。
After being ground to some extent in the second grinding chamber (11), the raw material can pass through the through hole (12) provided in the second partition member (4) counting from the upstream side. It will be a large size. The raw material having such a size is a through hole (12).
Pass into the third grinding chamber (11). The same processing as in the second grinding chamber (11) is the third, fourth, ...
Also in the grinding chamber (11), the raw material is ground until it has a desired size. The raw material having the desired particle size is discharged from the discharge port (8) of the drum body (2). By the above, the grinding step is completed, and the mortar coating is peeled off from the recycled aggregate from the concrete waste material, and the good recycled aggregate from which the pitch coating from the asphalt waste material is also peeled off can be obtained. The grinding process may be a wet process in which raw materials are added together with water or a dry process in which water is not used.

【0019】図1は、本発明の実施形態の一例を示して
おり、前記磨砕機による磨砕処理により得られた磨砕物
を25mmのふるいでふるい分けをし、25mmのふる
いを通過しなかったものは再度前記磨砕機による磨砕処
理を行い、25mmのふるいを通過したものは更に10
mmのふるいでふるい分けをし、粒径が10mm未満の
再生骨材と粒径が10mmを超えて25mm未満の再生
骨材とに分別し、粒径が10mm未満の磨砕物はコンク
リート用の再生砂(RC−10)(22)、粒径が10
mmを超えて25mm未満の磨砕物はコンクリート用の
骨材(23)として回収される。
FIG. 1 shows an example of an embodiment of the present invention, in which the ground material obtained by the grinding treatment by the grinding machine is sieved with a 25 mm sieve and does not pass through a 25 mm sieve. Is again ground by the above-mentioned grinder, and the one that has passed through a 25 mm sieve is 10 more.
Sieving with a sieve of mm to separate the recycled aggregate with a particle size of less than 10 mm and the recycled aggregate with a particle size of more than 10 mm and less than 25 mm, and the ground material with a particle size of less than 10 mm is recycled sand for concrete. (RC-10) (22), particle size 10
The ground material of more than 25 mm and less than 25 mm is collected as an aggregate (23) for concrete.

【0020】図2は本発明の実施形態の別の例を示して
おり、前記磨砕機による磨砕処理により得られた磨砕物
を粒径20mmのふるいでふるい分けをし、20mmの
ふるいを通過しなかったものは再度前記磨砕機による磨
砕処理を行い、20mmのふるいを通過したものは13
mmのふるいでふるい分けをし、13mmのふるいを通
過した、粒径が13mm未満の磨砕物は更に5mmのふ
るいでふるい分けをし、13mmのふるいを通過しなか
った13mmを超えて20mm未満の磨砕物はRS−2
0(26)として回収され、5mmのふるいを通過しな
かった5mmを超えて13mm未満の再生骨材はRS−
13(25)として回収され、5mmのふるいを通過し
た5mm未満の磨砕物はRS−5(24)として回収さ
れる。
FIG. 2 shows another example of the embodiment of the present invention. The ground material obtained by the grinding treatment by the grinding machine is sieved with a sieve having a particle diameter of 20 mm and passed through a 20 mm sieve. Those that did not exist were re-ground by the above-mentioned grinder, and those that passed through a 20 mm sieve were 13
The ground material having a particle size of less than 13 mm, which has been sieved with a 13 mm sieve and passed through a 13 mm sieve, is further sieved with a 5 mm sieve, and a ground material of more than 13 mm and less than 20 mm which has not passed through a 13 mm sieve. Is RS-2
Recycled aggregate of more than 5 mm and less than 13 mm that was recovered as 0 (26) and did not pass through a 5 mm sieve was RS-
13 (25) and less than 5 mm of grind passed through a 5 mm sieve is collected as RS-5 (24).

【0021】以下、本発明に係る再生骨材の製造方法に
より得られた再生骨材の試験結果を示すことにより、本
発明の効果をより一層明確にする。但し、本発明は以下
の実施例に何ら限定されない。 (実施例1)採取場より搬入されたコンクリート廃材を
原料として使用し、図1に示す工程からなる製造方法を
使用して最終的に粒径が10mm未満の再生砂を得た。 (比較例1)採取場より搬入されたコンクリート廃材を
原料として使用し、図1に示す工程で使用される磨砕機
をボールミル磨砕機に置き換えてなる製造方法を使用し
て最終的に粒径が10mm未満の再生砂を得た。実施例
及び比較例において得られた再生骨材の試験結果を表1
に示す。
The effects of the present invention will be further clarified by showing the test results of the recycled aggregate obtained by the method for producing recycled aggregate according to the present invention. However, the present invention is not limited to the following examples. (Example 1) Recycled sand having a particle size of less than 10 mm was finally obtained by using a concrete waste material carried in from a collection site as a raw material and using a manufacturing method including the steps shown in FIG. (Comparative Example 1) A concrete waste material carried in from a collection site is used as a raw material, and a grinding method used in the process shown in FIG. Reclaimed sand of less than 10 mm was obtained. Table 1 shows the test results of the recycled aggregates obtained in Examples and Comparative Examples.
Shown in.

【表1】 [Table 1]

【0022】表1に示される如く、本発明に係る再生骨
材の製造方法による摩砕処理では、処理後の原料の絶乾
密度(g/cm)、吸水率(%)、実積率(%)、安
定性(%)のいずれもが、日本工業規格のコンクリート
用の再生骨材としての品質基準を満たしていたが、比較
例は満たしていなかった。以上の結果から本発明に係る
再生骨材はアスファルト用の骨材としての品質基準も満
たす。 (実施例2)採取場より搬入されたアスファルト廃材を
原料として使用し、図2に示す工程からなる製造方法を
使用して最終的に粒径が5mmを超えて13mm未満の
再生骨材を得た。 (比較例2)採取場より搬入されたアスファルト廃材を
原料として使用し、図2に示す工程で使用される磨砕機
をボールミル磨砕機に置き換えてなる製造方法を使用し
て最終的に粒径が5mmを超えて13mm未満の再生骨
材を得た。実施例及び比較例において得られた再生骨材
の試験結果を表2に示す。
As shown in Table 1, in the grinding treatment by the method for producing a recycled aggregate according to the present invention, the absolutely dry density (g / cm 3 ) of the raw material after the treatment, the water absorption rate (%), and the actual volume rate. Both (%) and stability (%) satisfied the quality standards as a recycled aggregate for concrete of Japanese Industrial Standards, but the comparative examples did not. From the above results, the recycled aggregate according to the present invention also satisfies the quality standard as an aggregate for asphalt. (Example 2) Recycled aggregate with a particle size of more than 5 mm and less than 13 mm is finally obtained by using the asphalt waste material carried in from the collection site as a raw material and using the manufacturing method consisting of the steps shown in FIG. It was (Comparative Example 2) The asphalt waste material carried in from the collection site was used as a raw material, and the grinding method used in the process shown in FIG. A recycled aggregate having a size of more than 5 mm and less than 13 mm was obtained. Table 2 shows the test results of the recycled aggregates obtained in Examples and Comparative Examples.

【表2】 [Table 2]

【0023】表2に示される如く、本発明に係る再生骨
材の製造方法による摩砕処理では、処理後の原料の油分
(%)、絶乾密度(g/cm)、吸水率(%)、すり
へり減量(%)、洗い試験で失われる量(%)のいずれ
もが、日本工業規格のアスファルト用の骨材としての品
質基準を満たしていたが、比較例は満たしていなかっ
た。以上の結果から本発明に係る再生骨材はコンクリー
ト用の骨材としての品質基準も満たす。本発明に係る再
生骨材の製造方法は、コンクリート廃材に付着している
モルタル被膜又はアスファルト廃材に付着しているピッ
チ被膜を磨砕し、日本工業規格の品質基準を満たす、コ
ンクリート用又はアスファルト用どちらの骨材としても
利用が可能な再生骨材を得ることを主な目的とするもの
であるが、本発明の製造方法によれば、コンクリート廃
材に付着したモルタル被膜、アスファルト廃材に付着し
たピッチ被膜を確実に除去することができた。これによ
り天然骨材と同レベルの良好な、日本工業規格の品質基
準を満たす品質の再生骨材を得ることができた。
As shown in Table 2, in the milling treatment by the method for producing recycled aggregate according to the present invention, the oil content (%), absolute dry density (g / cm 3 ) and water absorption rate (%) of the raw material after the treatment are treated. ), The amount of abrasion loss (%), and the amount lost in the washing test (%) all satisfied the quality standard as an aggregate for asphalt of Japanese Industrial Standard, but the comparative examples did not. From the above results, the recycled aggregate according to the present invention also satisfies the quality standard as an aggregate for concrete. The method for producing a recycled aggregate according to the present invention is to grind a mortar coating adhering to a concrete waste material or a pitch coating adhering to an asphalt waste material to satisfy the quality standards of the Japanese Industrial Standards, for concrete or asphalt. Although the main purpose is to obtain a recycled aggregate that can be used as either aggregate, according to the production method of the present invention, the mortar coating adhered to the concrete waste material, the pitch adhered to the asphalt waste material The coating could be reliably removed. As a result, it was possible to obtain a recycled aggregate having a quality as good as that of natural aggregate and satisfying the quality standards of Japanese Industrial Standards.

【0024】[0024]

【発明の効果】以上説明したように、請求項1に係る発
明は、コンクリート廃材又はアスファルト廃材からなる
原料を破砕設備で破砕し、破砕処理により得た破砕物を
40mmのふるいでふるい分けをし、40mmのふるい
を通過しなかったものは再度破砕機による破砕処理を行
い、該粒径40mm未満に破砕された原料を磨砕するこ
とにより再生骨材を製造する方法であって、該原料の磨
砕がドラム体と、このドラム体内を該ドラム体の軸方向
に貫く回転軸と、この回転軸に対し傾斜した角度で取り
付けられ前記ドラム体内を区画して該ドラム体内に相互
に連通する複数の磨砕室を形成する仕切部材と、前記磨
砕室内に装填された磨砕用装填材とから構成され、前記
磨砕用装填材は、前記仕切部材が回転することによって
上昇落下運動を繰り返し且つ回転軸の軸長方向に往復運
動する磨砕機によって行われることを特徴とする再生骨
材の製造方法であり、請求項2に係る発明は、前記磨砕
機による磨砕処理により得た磨砕物を25mmのふるい
でふるい分けをし、25mmのふるいを通過しなかった
ものは再度前記磨砕機による磨砕処理を行い、25mm
のふるいを通過したものは更に10mmのふるいでふる
い分けをし、粒径が10mm未満の再生骨材と粒径が1
0mmを超えて25mm未満の再生骨材とに分別し、粒
径が10mm未満の磨砕物をコンクリート用の再生砂、
粒径が10mmを超えて25mm未満の磨砕物をコンク
リート用の骨材として回収することを特徴とする請求項
1記載の再生骨材の製造方法であり、請求項3に係る発
明では、前記磨砕機による磨砕処理により得た磨砕物を
粒径20mmのふるいでふるい分けをし、20mmのふ
るいを通過しなかったものは再度前記磨砕機による磨砕
処理を行い、20mmのふるいを通過したものは13m
mのふるいでふるい分けをし、13mmのふるいを通過
した、粒径が13mm未満の磨砕物は更に5mmのふる
いでふるい分けをし、13mmのふるいを通過しなかっ
た13mmを超えて20mm未満の磨砕物は5号砕石と
して回収し、5mmのふるいを通過しなかった5mmを
超えて13mm未満の再生骨材は6号砕石として回収
し、5mmのふるいを通過した5mm未満の磨砕物を7
号砕石として回収することを特徴とする請求項1記載の
再生骨材の製造方法であるから、以下に述べる効果を奏
する。
As described above, the invention according to claim 1 crushes a raw material consisting of concrete waste material or asphalt waste material in a crushing facility, and the crushed material obtained by the crushing treatment is sieved with a 40 mm sieve, What did not pass through a 40 mm sieve is a method of crushing with a crusher again, and a method of producing recycled aggregate by grinding the raw material crushed to have a particle size of less than 40 mm. A drum body, a rotary shaft that penetrates the drum body in the axial direction of the drum body, and a plurality of units that are attached at an angle inclined with respect to the rotary shaft to partition the drum body and communicate with each other in the drum body. It is composed of a partition member that forms a grinding chamber and a grinding loading material loaded in the grinding chamber. The grinding loading material repeats an ascending / descending motion as the partition member rotates. A method for manufacturing recycled aggregate, which is carried out by a grinding machine which is reciprocated and reciprocates in the axial direction of the rotary shaft, and the invention according to claim 2 is the grinding obtained by the grinding processing by the grinding machine. The crushed material is sieved with a 25 mm sieve, and if it does not pass through the 25 mm sieve, it is ground again with the above-mentioned grinder to obtain 25 mm.
After passing through the No. 1 sieve, it is screened with a 10 mm sieve, and the particle size is 1 with the recycled aggregate with a particle size of less than 10 mm.
Recycled sand for concrete, which is classified into recycled aggregate of more than 0 mm and less than 25 mm and having a particle size of less than 10 mm.
The method for producing a recycled aggregate according to claim 1, characterized in that a ground material having a particle size of more than 10 mm and less than 25 mm is recovered as an aggregate for concrete. The ground product obtained by the grinding process with a crusher is sieved with a sieve having a particle size of 20 mm, those which have not passed through the 20 mm sieve are subjected to the grinding process with the above-mentioned mill again, and those which have passed through the 20 mm sieve are 13m
The ground material having a particle size of less than 13 mm, which has been passed through a 13 mm sieve and passed through a 13 mm sieve, is further sieved with a 5 mm sieve, and a ground material of more than 13 mm and less than 20 mm that has not passed through a 13 mm sieve. Was recovered as No. 5 crushed stone, and the recycled aggregate of more than 5 mm and less than 13 mm that did not pass through the 5 mm sieve was recovered as No. 6 crushed stone, and less than 5 mm of the ground material passed through the 5 mm sieve was
Since the method for producing a recycled aggregate according to claim 1 is characterized in that the recovered aggregate is recovered as crushed stone, the following effects are achieved.

【0025】すなわち、本発明の再生骨材の製造方法に
よれば、コンクリート廃材又はアスファルト廃材から日
本工業規格で定められている再生骨材としての強度や吸
水率等の品質を満たす、コンクリート用又はアスファル
ト用どちらの骨材としても利用することが可能な高品位
の再生骨材を得ることができる。
That is, according to the method for producing a recycled aggregate of the present invention, a concrete aggregate or an asphalt waste material, which satisfies the qualities such as strength and water absorption as the recycled aggregate defined in the Japanese Industrial Standard, is used for concrete or It is possible to obtain a high-quality recycled aggregate that can be used as either aggregate for asphalt.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施形態の一例を示す工程説明図であ
る。
FIG. 1 is a process explanatory view showing an example of an embodiment of the present invention.

【図2】本発明の実施形態の一例を示す工程説明図であ
る。
FIG. 2 is a process explanatory view showing an example of an embodiment of the present invention.

【図3】本発明に係る摩砕機を示す縦断面図である。FIG. 3 is a vertical sectional view showing a grinder according to the present invention.

【図4】本発明における仕切部材の回転軸軸長方向の動
きを示す図である。
FIG. 4 is a diagram showing movement of a partition member in the present invention in the axial direction of the rotary shaft.

【図5】本発明における仕切部材の一例を示す図であ
る。
FIG. 5 is a diagram showing an example of a partition member according to the present invention.

【符号の説明】[Explanation of symbols]

1・・・・・摩砕機 2・・・・・ドラム体 3・・・・・回転軸 4・・・・・仕切部材 5・・・・・摩砕用装填材 7・・・・・導入口 8・・・・・排出口 9・・・・・投入用ホッパー 10・・・・駆動用モーター 11・・・・摩砕室 12・・・・導通孔 18・・・・端面板 19・・・・ベアリング 20・・・・破砕設備 21・・・・搬送設備 22・・・・コンクリート用の再生砂 23・・・・コンクリート用の骨材 24・・・・RS−5 25・・・・RS−13 26・・・・RS−20 27・・・・ふるい分け設備 28・・・・ふるい分け設備 29・・・・搬送設備 30・・・・搬送設備 1 ... Grinding machine 2 ... drum body 3 ... Rotary axis 4 ... Partition member 5 ... Charge material for grinding 7 ... Entrance 8 ... Discharge port 9: Input hopper 10 ··· Drive motor 11 ... Grinding chamber 12 ... Conduction hole 18 ... End plate 19 ... Bearing 20 ... Crushing equipment 21 ... Transportation equipment 22 ・ ・ ・ ・ Recycled sand for concrete 23 ... ・ Aggregate for concrete 24 ... RS-5 25 ... RS-13 26 ... RS-20 27 ... Sieving equipment 28 ... Sieving equipment 29 ··· Conveyor equipment 30 ··· Transportation equipment

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B07B 1/00 B07B 1/00 Z C04B 18/16 ZAB C04B 18/16 ZAB E01C 19/05 E01C 19/05 Fターム(参考) 2D052 AA04 AA15 BA01 BA03 BA08 4D021 AA03 DC02 EA05 EB01 4D063 FF14 FF23 FF35 GA06 GA10 GC05 GC14 GC17 GC21 GC35 GD02 GD24 4D067 CG09 EE14 EE17 GA06 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B07B 1/00 B07B 1/00 Z C04B 18/16 ZAB C04B 18/16 ZAB E01C 19/05 E01C 19/05 F-term (reference) 2D052 AA04 AA15 BA01 BA03 BA08 4D021 AA03 DC02 EA05 EB01 4D063 FF14 FF23 FF35 GA06 GA10 GC05 GC14 GC17 GC21 GC35 GD02 GD24 4D067 CG09 EE14 EE17 GA06

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 コンクリート廃材又はアスファルト廃材
からなる原料を破砕設備で破砕し、破砕処理により得た
破砕物を40mmのふるいでふるい分けをし、40mm
のふるいを通過しなかったものは再度破砕機による破砕
処理を行い、該粒径40mm未満に破砕された原料を磨
砕することにより再生骨材を製造する方法であって、該
原料の磨砕がドラム体と、このドラム体内を該ドラム体
の軸方向に貫く回転軸と、この回転軸に対し傾斜した角
度で取り付けられ前記ドラム体内を区画して該ドラム体
内に相互に連通する複数の磨砕室を形成する仕切部材
と、前記磨砕室内に装填された磨砕用装填材とから構成
され、前記磨砕用装填材は、前記仕切部材が回転するこ
とによって上昇落下運動を繰り返し且つ回転軸の軸長方
向に往復運動する磨砕機によって行われることを特徴と
する再生骨材の製造方法。
1. A raw material made of concrete waste or asphalt waste is crushed in a crushing facility, and the crushed material obtained by the crushing treatment is sieved with a 40 mm sieve to obtain 40 mm.
If it does not pass through the sieving machine, it is crushed by a crusher again, and a raw material crushed to have a particle size of less than 40 mm is crushed to produce a recycled aggregate. Is a drum body, a rotary shaft that penetrates the drum body in the axial direction of the drum body, and a plurality of polishing members that are attached at an angle inclined with respect to the rotary shaft to partition the drum body and communicate with each other in the drum body. It is composed of a partition member that forms a crushing chamber and a crushing loading material loaded in the crushing chamber. The crushing loading material repeats a rising / falling motion by the rotation of the partition member and rotates. A method of manufacturing recycled aggregate, which is carried out by a grinder that reciprocates in the axial direction of the shaft.
【請求項2】 前記磨砕機による磨砕処理により得た磨
砕物を25mmのふるいでふるい分けをし、25mmの
ふるいを通過しなかったものは再度前記磨砕機による磨
砕処理を行い、25mmのふるいを通過したものは更に
10mmのふるいでふるい分けをし、粒径が10mm未
満の再生骨材と粒径が10mmを超えて25mm未満の
再生骨材とに分別し、粒径が10mm未満の磨砕物をコ
ンクリート用の再生砂、粒径が10mmを超えて25m
m未満の磨砕物をコンクリート用の骨材として回収する
ことを特徴とする請求項1記載の再生骨材の製造方法。
2. The ground product obtained by the grinding process using the grinding machine is sieved with a 25 mm sieve, and those which do not pass through the 25 mm screen are subjected to the grinding process with the grinding machine again, and then the 25 mm sieve. After passing through, it is further sieved with a 10 mm sieve to separate it into recycled aggregate with a particle size of less than 10 mm and recycled aggregate with a particle size of more than 10 mm and less than 25 mm, and a ground material with a particle size of less than 10 mm. Is recycled sand for concrete, particle size is over 10mm and 25m
The method for producing a recycled aggregate according to claim 1, wherein the ground material having a size of less than m is recovered as an aggregate for concrete.
【請求項3】 前記磨砕機による磨砕処理により得た磨
砕物を粒径20mmのふるいでふるい分けをし、20m
mのふるいを通過しなかったものは再度前記磨砕機によ
る磨砕処理を行い、20mmのふるいを通過したものは
13mmのふるいでふるい分けをし、13mmのふるい
を通過した、粒径が13mm未満の磨砕物は更に5mm
のふるいでふるい分けをし、13mmのふるいを通過し
なかった13mmを超えて20mm未満の磨砕物は5号
砕石として回収し、5mmのふるいを通過しなかった5
mmを超えて13mm未満の再生骨材は6号砕石として
回収し、5mmのふるいを通過した5mm未満の磨砕物
を7号砕石として回収することを特徴とする請求項1記
載の再生骨材の製造方法。
3. The ground material obtained by the grinding treatment by the grinding machine is sieved with a sieve having a particle diameter of 20 mm to obtain 20 m.
Those that did not pass through the m sieve were subjected to grinding treatment with the above-mentioned grinder again, those that passed through the 20 mm sieve were sieved with a 13 mm sieve, and passed through a 13 mm sieve, and the particle size was less than 13 mm. Grinded material is 5 mm
Sifted with a No. 3 sieve and did not pass through a 13 mm sieve. Grinded material of more than 13 mm and less than 20 mm was collected as No. 5 crushed stone and did not pass through a 5 mm sieve.
The reclaimed aggregate of more than 13 mm and less than 13 mm is recovered as No. 6 crushed stone, and the ground material of less than 5 mm that has passed through a 5 mm sieve is recovered as No. 7 crushed stone. Production method.
JP2001397364A 2001-12-27 2001-12-27 Production method for regenerated aggregate Pending JP2003190827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001397364A JP2003190827A (en) 2001-12-27 2001-12-27 Production method for regenerated aggregate

Publications (1)

Publication Number Publication Date
JP2003190827A true JP2003190827A (en) 2003-07-08

Family

ID=27603189

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2003190827A (en)

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KR100525197B1 (en) * 2004-05-17 2005-11-02 김성원 Round polished aggregates for concrete using abandoned refractory materials from an iron mill and preparation method thereof
JP2006035206A (en) * 2004-07-29 2006-02-09 Samuhyun Environmental Co Ltd Recycled aggregate surface exfoliating device
JP2006102564A (en) * 2004-09-30 2006-04-20 Jfe Steel Kk Double roll type crusher and particle regulation method for sintered ore using it
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KR100525197B1 (en) * 2004-05-17 2005-11-02 김성원 Round polished aggregates for concrete using abandoned refractory materials from an iron mill and preparation method thereof
JP2006035206A (en) * 2004-07-29 2006-02-09 Samuhyun Environmental Co Ltd Recycled aggregate surface exfoliating device
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