JPH03295836A - Method and apparatus for treating fresh concrete - Google Patents
Method and apparatus for treating fresh concreteInfo
- Publication number
- JPH03295836A JPH03295836A JP2096863A JP9686390A JPH03295836A JP H03295836 A JPH03295836 A JP H03295836A JP 2096863 A JP2096863 A JP 2096863A JP 9686390 A JP9686390 A JP 9686390A JP H03295836 A JPH03295836 A JP H03295836A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- fresh concrete
- cyclone
- conveyor
- hopper
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000011362 coarse particle Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 2
- 238000010979 pH adjustment Methods 0.000 claims 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000003657 drainage water Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、キャンセル生コンクリートを処理して粗骨
材、細骨材およびセメントに分離再生することを目的と
した生コンクリート処理方法および装置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a ready-mixed concrete processing method and apparatus for processing canceled ready-mixed concrete and separating and recycling it into coarse aggregate, fine aggregate and cement. .
（従来の技術）
従来、キャンセル生コンクリートの処理については、フ
ィルタープレスにより脱水処理する方法と、硬化物を廃
棄する方法があるが、フィルタープレスによる方法は、
フィルターの目詰りを生じ、事実上連続運転不可能とな
り、処理不能である。(Conventional technology) Conventionally, there are two methods for processing canceled fresh concrete: dehydrating it using a filter press and discarding the hardened material, but the method using a filter press
The filter becomes clogged, making continuous operation impossible and treatment impossible.
そこで、専ら廃棄処分しているが、近来廃棄場所がなく
なり、或いは場所が益々遠隔地となって、遂には廃棄不
能になるおそれがある。また、コンクリート製品にしよ
うとしても、キャンセル生コンクリートは、主として夕
方から発生するので、製品の製造は夜間作業によらなけ
ればならない。Therefore, they are exclusively disposed of, but in recent years there is no longer a place to dispose of them, or the places are becoming more and more remote, and there is a risk that it will eventually become impossible to dispose of them. Furthermore, even if concrete products are to be produced, canceled fresh concrete is produced mainly in the evening, so the product must be manufactured at night.
また、コンクリートブロックにした場合に、その運搬費
も多大となる事情があるので、紙庫な処理方法が望まれ
ているが、未だ見るべきものがない。In addition, if concrete blocks are used, the cost of transporting them would be high, so a paper storage method is desired, but there is nothing of interest yet.
（発明により解決すべき課題）
生コンクリートを水洗して粗骨材、細骨材および排水に
分離した場合に、排水処理が最も問題となる。そこで、
フィルタープレスにより脱水しても、残留水分が３０％
程度あり、これをそのまま運搬することは、至難とされ
ている。また、ウエットケイキのまま放置すると、半硬
化状となり、益々扱い難いことになるなどの問題点があ
った。(Problems to be Solved by the Invention) When fresh concrete is washed with water and separated into coarse aggregate, fine aggregate, and waste water, waste water treatment becomes the most problematic. Therefore,
Even after dehydration using a filter press, the residual moisture remains 30%.
However, it is considered extremely difficult to transport it as is. Furthermore, if the wet cake is left as it is, it becomes semi-hardened, making it even more difficult to handle.
（課題を解決する為の手段）
然るにこの発明は、生コンクリートを水洗して粗骨材と
細骨材とを回収した後、排水を沈澱槽に導いて凝集剤（
例えば高分子凝集剤）により遠心分離に耐え得る程の強
い団粒状にして沈澱分離し、その上澄水は洗浄水に再使
用して系外に出さないようにし、沈澱物は連続的に遠心
分離機に送り込み、連続脱水（水分３５％〜３８％）す
る。(Means for Solving the Problems) However, in this invention, fresh concrete is washed with water to recover coarse aggregate and fine aggregate, and then the wastewater is led to a settling tank and a flocculant (
For example, a polymer flocculant) is used to form agglomerates strong enough to withstand centrifugation and precipitate separation, and the supernatant water is reused as washing water so that it does not leave the system, and the precipitate is continuously centrifuged. It is fed into a machine and continuously dehydrated (35% to 38% water content).
そこで、前記処理を経たウエットケイキ（脱水物）を、
回転乾燥釜に入れることにより、水分１０％前後のトラ
イケイキとし、これを粉砕して再生セメントにし、前記
従来の問題点を解決したのである。Therefore, the wet cake (dehydrated product) that has undergone the above treatment is
By placing it in a rotary drying pot, it was made into a tri-cake with a moisture content of around 10%, which was then ground into recycled cement, thereby solving the problems of the conventional method.
即ち、この発明の方法は、生コンクリートを水洗篩別し
、粗骨材、細骨材および排水に分離して排水タンクへ入
れ、前記排水タンクに凝集剤を入れて、上澄水と沈澱物
に分離し、沈澱物は遠心分離により脱水した後、火力乾
燥し、この乾燥物を粉砕した後分級して、粗粒は再び粉
砕し、微粉末は袋詰して再生セメントとすることを特徴
とした生コンクリートの処理方法である。また、上澄水
はＰｉｔ調整の後、生コンクリートの水洗用に送水し。That is, in the method of the present invention, fresh concrete is washed and sieved, separated into coarse aggregate, fine aggregate, and waste water, and placed in a waste water tank, and a flocculant is added to the waste water tank to separate supernatant water and sediment. After separation, the precipitate is dehydrated by centrifugation, then dried by fire, this dried product is crushed and then classified, the coarse particles are crushed again, and the fine powder is packed in bags to make recycled cement. This is a method for processing fresh concrete. In addition, after adjusting the pit, the supernatant water is sent to wash the fresh concrete.
又は外界に放流することとしたものである。次に、この
発明の装置は、洗浄分離機の一側へ排水槽を設置し、排
水槽に沈澱槽を併設する。前記沈澱槽の一側へ調整槽を
設置し、調整槽には薬剤槽を付設し、前記沈澱槽の下部
に移送管の一端を連結し、移送管にはポンプを介して遠
心分離機の送入側に連結し、前記遠心分離機には排水を
前記調整槽に送る送水管を連結すると共に、分離固形物
を運ぶコンベアの一端を臨ませ、該コンベアの他端は乾
燥機のホッパーに連結し、乾燥機の排出口にはコンベア
の一端を連結し、該コンベアの他端は粉砕機のホッパー
に連結し、粉砕機の吐出口には粉体移送ポンプの吸入側
を連結し、粉体移送ポンプの吐出側には分級用の第１、
第２のサイクロンを順次連結する。前記第１のサイクロ
ンの排気口は送気管を介して第２のサイクロンの送入口
に連結し、第１のサイクロンの下部は、コンベアを介し
て前記粉砕機のホッパーに連結し、第２のサイクロンの
排気は外界に放出し、第２のサイクロンの下部排出口は
、フィーダーを経て袋詰機に連結したことを特徴とする
生コンクリートの処理装置である。Or it was decided to release it into the outside world. Next, in the apparatus of the present invention, a drainage tank is installed on one side of the washing separator, and a sedimentation tank is attached to the drainage tank. An adjustment tank is installed on one side of the sedimentation tank, a chemical tank is attached to the adjustment tank, one end of a transfer pipe is connected to the lower part of the sedimentation tank, and a centrifuge is connected to the transfer pipe via a pump. The centrifugal separator is connected to the inlet side, and the centrifugal separator is connected to a water pipe that sends wastewater to the adjustment tank, and one end of a conveyor that carries the separated solids is faced, and the other end of the conveyor is connected to a hopper of a dryer. One end of the conveyor is connected to the discharge port of the dryer, the other end of the conveyor is connected to the hopper of the crusher, and the suction side of the powder transfer pump is connected to the discharge port of the crusher. On the discharge side of the transfer pump, there is a first one for classification,
A second cyclone is connected in sequence. The exhaust port of the first cyclone is connected to the inlet of the second cyclone via an air pipe, the lower part of the first cyclone is connected to the hopper of the crusher via a conveyor, and the second cyclone is connected to the hopper of the crusher via a conveyor. This is a ready-mixed concrete processing apparatus characterized in that the exhaust gas is discharged to the outside world, and the lower discharge port of the second cyclone is connected to a bagging machine via a feeder.
また、洗浄分離機は水洗機と分級篩別機とにより構成し
たものである。次に、沈澱槽には、凝集剤供給機と撹拌
装置を具備したものである。更に、乾燥機は円筒釜を斜
めに架設して回転釜としたものである。Further, the washing separator is composed of a water washer and a classification sieve. Next, the settling tank is equipped with a flocculant feeder and a stirring device. Furthermore, the dryer has a cylindrical kettle installed diagonally to form a rotary kettle.
（作 用）
この発明は、生コンクリートの洗浄排水を凝集剤で沈殿
させ、これを連続遠心分離機で脱水するので、生コンク
リートは比較的迅速に処理され、セメントの活性が失わ
れる前に水分を少なくする。(Function) This invention precipitates the washed concrete waste water with a flocculant and dehydrates it with a continuous centrifuge, so the fresh concrete is processed relatively quickly and water is removed before the cement loses its activity. Reduce.
従って、セメントの活性を相当量（７０％〜８０％）保
有させることになる。このようにすれば、キャンセル生
コンクリートは総て有用に処理され、公害物が出ないの
みならず、再利用することができる。Therefore, a considerable amount (70% to 80%) of cement activity is retained. In this way, all of the canceled ready-mixed concrete can be usefully processed, no pollutants are produced, and it can also be reused.
（実 施 例）
次に、この発明（方法と装置）を実施例に基づいて説明
する。(Example) Next, this invention (method and apparatus) will be explained based on an example.
キャンセル生コンクリートをホッパー１にあけ、５〜１
０倍のシャワー３８で水洗し、篩機２．２ａにより粗骨
材３（砂利）と細骨材４（砂）に分別し、夫々集積して
再使用できるようにする。Pour the canceled fresh concrete into hopper 1, 5-1
It is washed with water in a 0x shower 38, and separated into coarse aggregate 3 (gravel) and fine aggregate 4 (sand) by a sieve 2.2a, which are then accumulated for reuse.
一方排水は、篩機２．２ａの受槽３９から一旦排水槽５
に入れ、該排水槽５内で撹拌器４０により撹拌し、次い
で排水はポンプ６により矢示４Ｉのように必要量宛沈澱
槽７に移す。次に、沈澱槽内へ適量の凝集剤を薬剤槽８
からポンプ９により矢示１０のように添加し、撹拌機１
１で撹拌する。On the other hand, the wastewater is temporarily discharged from the receiving tank 39 of the sieve machine 2.2a to the drainage tank 5.
The wastewater is stirred in the drainage tank 5 by the stirrer 40, and then the wastewater is transferred to the sedimentation tank 7 in the required amount by the pump 6 as shown by the arrow 4I. Next, add an appropriate amount of flocculant into the sedimentation tank in chemical tank 8.
from the pump 9 as shown by the arrow 10, and stirrer 1.
Stir at 1.
この撹拌により凝集剤が沈澱槽内へ均一に行き渡ると、
微粒固形分が凝固して沈殿するので、その上澄水を矢示
４２のようにオーバーフローさせて調整槽１２に入れる
。調整槽１２には薬剤槽１３から酸（例えば硫酸）が矢
示４３のように適量宛滴下されており、かつ調整槽１２
内は撹拌器４４で撹拌されているので、調整槽１２内の
アルカリ水を中和して中性にする。このようにして調整
槽１２内の水が中和（中性になる）されたならば、ポン
プ１４によって再び生コンクリートの洗浄水として使用
すべく移送する。前記中和水が生コンクリートの洗浄水
としての使用量より多くなった時には、余剰分をポンプ
１４により最終調整槽１５に導き、薬剤槽４５から薬剤
を滴下して再調整した後、矢示５６のように外界へ放流
する。When the flocculant is distributed uniformly into the settling tank by this stirring,
Since the fine solids coagulate and precipitate, the supernatant water is allowed to overflow as indicated by arrow 42 and placed in the adjustment tank 12. An appropriate amount of acid (for example, sulfuric acid) is dripped into the adjustment tank 12 from a chemical tank 13 as shown by an arrow 43, and the adjustment tank 12
Since the inside is stirred by the stirrer 44, the alkaline water in the adjustment tank 12 is neutralized and made neutral. Once the water in the adjustment tank 12 has been neutralized (becomes neutral) in this way, it is transferred by the pump 14 to be used again as washing water for fresh concrete. When the amount of neutralized water exceeds the amount used for cleaning fresh concrete, the excess amount is guided to the final adjustment tank 15 by the pump 14, and after readjustment by dropping chemicals from the chemical tank 45, It is released to the outside world like this.
前記沈澱槽７で沈殿したセメントスラリーは、濃縮槽４
６で濃縮した後、ポンプ４７で矢示４８のようにスクリ
ューデカンタ−１６に送られ、水と固形分に分離される
。この分離された水は、送水管５７で矢示４９のように
前記調整槽１２へ送られてＰＨ調整される。The cement slurry precipitated in the settling tank 7 is transferred to the concentration tank 4.
After being concentrated in step 6, it is sent to the screw decanter 16 by a pump 47 as indicated by an arrow 48, where it is separated into water and solids. This separated water is sent to the adjustment tank 12 as indicated by an arrow 49 through a water pipe 57, and its pH is adjusted.
一方固形分１７（ウエットケイキ）は、水分３５％〜３
８％となって、コンベア】８、中間ホッパー５８、コン
ベア１９により矢示５０．５１のように運ばれてホッパ
ー２０に送られ、該ホッパー２０の下方から回転釜２１
へ供給される。該回転釜２１は公知の回転釜であって、
上方で供給された固形分１７が矢示２２の方向へ転動す
るのに対し、加熱炉５９で発生した加熱気体が矢示２３
の方向へ移動し、前記固形分を急速に乾燥する。このよ
うにして、固形分１７は水分１０％前後の乾燥物２４（
ドライケイキ）となる。この乾燥物２４をコンヘア２６
で矢示５２のようにクラッシャー２５のホッパー６０に
供給し、粉砕する。On the other hand, solid content 17 (wet cake) has a moisture content of 35% to 3
8%, conveyor 8, intermediate hopper 58, and conveyor 19 as shown by arrows 50 and 51 and sent to hopper 20, and from below the hopper 20 to rotary pot 21.
supplied to The rotary pot 21 is a known rotary pot,
The solid content 17 supplied above rolls in the direction of arrow 22, while the heated gas generated in the heating furnace 59 rolls in the direction of arrow 23.
to rapidly dry the solid content. In this way, the solid content 17 is reduced to the dry matter 24 (with a moisture content of around 10%).
dry keiki). This dried material 24 is converted into hair 26.
It is supplied to the hopper 60 of the crusher 25 as shown by the arrow 52 and crushed.
この粉砕物は、エアポンプ２７で矢示２８のように第１
のサイクロン２９に送られ、ここで粗粒を分離する。分
離された粗粒は、矢示５３のようにコンベア３０でクラ
ッシャー２５のホッパー６０に戻り、再び粉砕加工を受
ける。This pulverized material is pumped into the first
is sent to a cyclone 29, where coarse particles are separated. The separated coarse particles are returned to the hopper 60 of the crusher 25 on the conveyor 30 as indicated by an arrow 53, and are subjected to crushing processing again.
一方、第１のサイクロンを出た微粉含有空気は、矢示５
４のように第２のサイクロン３１に送られ、この第２の
サイクロン３１で気体と微粉とに分離され、気体は矢示
５５のように排気ファン３３に吸入されて矢示３２のよ
うに外界へ放出される。On the other hand, the fine powder-containing air leaving the first cyclone is indicated by the arrow 5.
The gas is sent to the second cyclone 31 as shown in 4, and separated into gas and fine powder by this second cyclone 31. The gas is sucked into the exhaust fan 33 as shown by arrow 55 and released into the outside world as shown by arrow 32. released to.
一方微粉は、矢示３４のようにフィーダー３５を経て袋
詰機３６により袋３７内へ自動袋詰され、再生セメント
製品となる。On the other hand, the fine powder passes through a feeder 35 as shown by an arrow 34 and is automatically packed into a bag 37 by a bagging machine 36 to become a recycled cement product.
前記において、生コンクリートの洗浄水は、再生系内の
循環で再使用する為に（外界へ排水する場合には、更に
倉入りに浄水処理する）、系外汚染（公害）のおそれは
ない。また、クラッシャにより粉砕された微粉は、サイ
クロンで分離されるので、固形物を含んだ排気が外界に
出る為に公害を生じるおそれもないが、この排気につい
ては充分な注意
を払い、外界に出ないように考慮する必要がある。In the above, since the fresh concrete washing water is reused by circulation within the regeneration system (if drained to the outside world, the water is further purified in a warehouse), so there is no risk of contamination outside the system. In addition, since the fine powder crushed by the crusher is separated by a cyclone, there is no risk of causing pollution due to the exhaust gas containing solids going out to the outside world. It is necessary to take into consideration that this is not the case.
（発明の効果）
この発明は、キャンセル生コンクリートを粗骨材、微骨
材および洗浄排水に分離し、粗骨材と細４゜
骨材を再使用すると共に、排水中に混入したセメントは
、凝集、脱水、乾燥、粉砕処理を経て再生セメントとし
て使用できる効果がある。(Effect of the invention) This invention separates canceled fresh concrete into coarse aggregate, fine aggregate, and washed drainage water, reuses the coarse aggregate and fine 4° aggregate, and removes cement mixed in the drainage water. It has the effect of being able to be used as recycled cement after agglomeration, dehydration, drying, and pulverization.
従って、従来のキャンセル生コンクリートの廃棄費用を
生コンクリートの処理費用に当てたとしても、再利用材
料の売却代金が余分となり、経済的にも充分引き合う再
生方法である。Therefore, even if the cost of disposing of the conventional canceled ready-mixed concrete is applied to the processing cost of the ready-mixed concrete, the proceeds from selling the recycled materials will be extra, making this a recycling method that is economically viable.
また、この発明の装置によれば、キャンセル生コンクリ
ートの連続自動処理ができるので、比較的少労力で、多
量かつ短時間に処理し得る効果がある。また、短時間内
の処理により再生セメントの活性が相当多く残ることに
なり、再生セメントの品質低下を極力抑えることができ
る効果がある。Further, according to the apparatus of the present invention, since it is possible to continuously and automatically process canceled fresh concrete, it is possible to process a large amount of concrete in a short time with relatively little labor. In addition, the treatment within a short period of time allows a considerable amount of the activity of the recycled cement to remain, which has the effect of suppressing deterioration in the quality of the recycled cement as much as possible.
図は、この発明のフロー図である。
１・・・ホッパー ２・・・篩 機 ３・・・粗骨
材４・・・細骨材 ５・・・排水槽 ７・・・沈
澱槽】２・・・調整槽 １３・・・薬剤槽１６・・・
スクリューデカンタ−２１・・・回転釜２５・・・クラ
ッシャー ２９．３１・・・サイクロン３５・・・フ
ィーダー
３６・・・袋詰機The figure is a flow diagram of the invention. 1... Hopper 2... Sieving machine 3... Coarse aggregate 4... Fine aggregate 5... Drainage tank 7... Sedimentation tank] 2... Adjustment tank 13... Chemical tank 16...
Screw decanter 21...Rotary pot 25...Crusher 29.31...Cyclone 35...Feeder 36...Bagging machine
Claims (1)
び排水に分離して排水タンクへ入れ、前記排水タンクに
凝集剤を入れて、上澄水と沈澱物に分離し、沈澱物は遠
心分離により脱水した後、火力乾燥し、この乾燥物を粉
砕した後分級して、粗粒は再び粉砕し、微粉末は袋詰し
て再生セメントとすることを特徴とした生コンクリート
の処理方法 ２ 上澄水はＰＨ調整の後、生コンクリートの水洗用に
送水し、又は外界に放流することとした請求項１記載の
生コンクリートの処理方法 ３ 洗浄分離機の一側へ排水槽を設置し、排水槽に沈澱
槽を併設する。前記沈澱槽の一側へ調整槽を設置し、調
整槽には薬剤槽を付設し、前記沈澱槽の下部に移送管の
一端を連結し、移送管はポンプを介して遠心分離機の送
入側に連結し、前記遠心分離機には排水を前記調整槽に
送る送水管を連結すると共に、分離固形物を運ぶコンベ
アの一端を臨ませ、該コンベアの他端は乾燥機のホッパ
ーに連結し、乾燥機の排出口にはコンベアの一端を連結
し、該コンベアの他端は粉砕機のホッパーに連結し、粉
砕機の吐出口には粉体移送ポンプの吸入側を連結し、粉
体移送ポンプの吐出側には分級用の第１、第２のサイク
ロンを順次連結する。前記第１のサイクロンの排気口は
送気管を介して第２のサイクロンの送入口に連結し、第
１のサイクロンの下部は、コンベアを介して前記粉砕機
のホッパーに連結し、第２のサイクロンの排気は外界に
放出し、第２のサイクロンの下部排出口は、フィーダー
を経て袋詰機に連結したことを特徴とする生コンクリー
トの処理装置 ４ 洗浄分離機は水洗機と分級篩別機とにより構成した
請求項３記載の生コンクリートの処理装置 ５ 沈澱槽には、凝集剤供給機と撹拌装置を具備した請
求項３記載の生コンクリート処理装置 ６ 乾燥機は円筒釜を斜めに架設して回転釜とした請求
項３記載の生コンクリート処理装置[Scope of Claims] 1. Fresh concrete is washed and sieved, separated into coarse aggregate, fine aggregate, and waste water, and placed in a waste water tank. A flocculant is added to the waste water tank, and separated into supernatant water and sediment. The precipitate is dehydrated by centrifugation, then dried by fire, the dried product is crushed and then classified, the coarse particles are crushed again, and the fine powder is packed in bags to make recycled cement. Fresh concrete treatment method 2 Fresh concrete treatment method 3 according to claim 1, wherein the supernatant water is sent to wash the fresh concrete after pH adjustment or is discharged to the outside world. A water tank will be installed, and a sedimentation tank will be attached to the drainage tank. An adjustment tank is installed on one side of the sedimentation tank, a chemical tank is attached to the adjustment tank, and one end of a transfer pipe is connected to the lower part of the sedimentation tank, and the transfer pipe is connected to the centrifuge through a pump. The centrifugal separator is connected to a water pipe that sends wastewater to the adjustment tank, and one end of a conveyor that conveys the separated solids is connected to the centrifuge, and the other end of the conveyor is connected to a hopper of a dryer. , one end of the conveyor is connected to the discharge port of the dryer, the other end of the conveyor is connected to the hopper of the crusher, the suction side of the powder transfer pump is connected to the discharge port of the crusher, and the powder transfer First and second cyclones for classification are sequentially connected to the discharge side of the pump. The exhaust port of the first cyclone is connected to the inlet of the second cyclone via an air pipe, the lower part of the first cyclone is connected to the hopper of the crusher via a conveyor, and the second cyclone is connected to the hopper of the crusher via a conveyor. Fresh concrete processing equipment 4 characterized in that the exhaust gas of the second cyclone is discharged to the outside world, and the lower discharge port of the second cyclone is connected to a bagging machine via a feeder. A fresh concrete processing apparatus 5 according to claim 3, comprising: a fresh concrete processing apparatus 6 according to claim 3, wherein the settling tank is equipped with a flocculant feeder and a stirring device; the dryer has a cylindrical pot installed diagonally The ready-mixed concrete processing apparatus according to claim 3, which is a rotary pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9686390A JPH0688815B2 (en) | 1990-04-12 | 1990-04-12 | Raw concrete treatment method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9686390A JPH0688815B2 (en) | 1990-04-12 | 1990-04-12 | Raw concrete treatment method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03295836A true JPH03295836A (en) | 1991-12-26 |
| JPH0688815B2 JPH0688815B2 (en) | 1994-11-09 |
Family
ID=14176291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9686390A Expired - Lifetime JPH0688815B2 (en) | 1990-04-12 | 1990-04-12 | Raw concrete treatment method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688815B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032467A1 (en) * | 2006-09-16 | 2008-03-20 | Hiromi Yamamoto | Process for treatment of residual ready mixed concrete, recycled cement, and aggregate for concrete |
| JP2013220973A (en) * | 2012-04-17 | 2013-10-28 | Nippo Corp | Cement composition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209059A (en) * | 1985-03-11 | 1986-09-17 | P M Concrete Kk | Method and apparatus for regenerating washing residue of ready-mixed concrete |
-
1990
- 1990-04-12 JP JP9686390A patent/JPH0688815B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209059A (en) * | 1985-03-11 | 1986-09-17 | P M Concrete Kk | Method and apparatus for regenerating washing residue of ready-mixed concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032467A1 (en) * | 2006-09-16 | 2008-03-20 | Hiromi Yamamoto | Process for treatment of residual ready mixed concrete, recycled cement, and aggregate for concrete |
| JP2013220973A (en) * | 2012-04-17 | 2013-10-28 | Nippo Corp | Cement composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0688815B2 (en) | 1994-11-09 |
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