KR20020042569A - method and apparatus for remanufacturing aggregate exploit waste concrete - Google Patents

Abstract

PURPOSE: Provided are a manufacturing method and apparatus for producing recycled aggregates, coarse and fine aggregates reproduced from waste concrete, used for Ready-mixed concrete through the processes of water control, crushing and washing classification. CONSTITUTION: The aggregates and sludge are obtained by removing impurities such as used wood, plastics, and ascon as well as cement mortar by using; manual selection, belt magnet, wind power, water sorter, compression crusher, vibration screening, vertical shaft impact (rock on metal type, rock on rock type), multiple classifier, hydro cyclone, variable sludge convey switch, impurity remover, bucket wheel, thickener and filter press and so on. The apparatus removes impurities by undergoing magnet, wind, and water floating a number of times, and prevent dust. Controlling percentage of water in the raw materials makes efficient crushing, polishing and breaking concrete, resulting in economical and mass reproduction of aggregates. The repetition of impact crushing and polishing to remove cement mortar, gives natural-like aggregates. Both rock on metal type and rock on rock typed vertical shaft impact enables to produce high quality of aggregates ranging from 19-20mm(coarse) and 4-6mm(fine) at low cost.

Description

Process and apparatus for manufacturing recycled aggregate using waste concrete {method and apparatus for remanufacturing aggregate exploit waste concrete}

The present invention relates to a method and apparatus for producing recycled aggregate for manufacturing civil engineering and construction aggregate using waste concrete, which is a construction waste, and in particular, a main component of waste concrete using waste concrete which is firstly treated in a construction waste intermediate treatment plant. The present invention relates to a method and apparatus for manufacturing high quality recycled aggregates (coarse aggregates and fine aggregates produced by extracting from waste concrete) having the properties of natural aggregates by extracting the aggregates and the fine aggregates (sand) from cement mortar.

In general, there are dry and wet treatment methods in the prior art, and dry is the size of concrete that is filtered to remove impurities such as iron, wood, vinyl, plastic, paper, etc. contained in the waste concrete and dry by compression crushing and dry screen. It is of a quality that is made of crushed particles and used for refilling mixed aggregate for road pavement. As prior arts of such a dry treatment method, in Japanese, Japanese Patent Laid-Open Nos. 11-35357, 11-12004, 11-335149, etc., are used as dry mills, ball mills, and tube mills. It is crushed and polished with high consumables cost and production cost and low peeling effect. As a method of screen sorting or wind sludge removal, the efficiency of peeling and classifying is low, so the product absorption rate is higher than 10% and low dry weight is produced. In this way, the physical properties of the product of this method can be used as a mixed stone because the physical properties of the method does not meet JIS regulations. This manufacturing method is a difficult method for mass processing. Japanese wet treatment methods include tube mills, drum-type peelers, rod mills, ball mills, etc., by crushing waste cement and cement mortar strippers, such as Japanese Patent Application Laid-Open No. 8-245248, 10-338558, and 11-314951. One of these models is used to classify sludge and fine aggregates by wet grinding and grinding using a pressurized classifier or screen. This method has a greater effect of exfoliation of cement mortar than dry type. Compared to the problem of light and throughput, the consumable cost is high, the peeling efficiency and classification efficiency are low, and the production cost is high. It is a non-environmental method that omits a comprehensive treatment method from raw material to wastewater treatment. In addition, there is a method in which the macro wave is irradiated instantaneously, or heated by a heater, and then broken by dropping the adhesive strength of mortar by thermal expansion, but all have low peeling efficiency of cement mortar, and are uneconomically viable due to excessive energy boiling costs. This is less.

There are Korean Utility Model Registration No. 20-0202906 and Registration No. 20-0236037, Patent Publication No. 2000-0058365 and Patent Publication No. 2001-0106385 as domestic prior arts. It cannot be used for ready-mixed concrete in a way that does not leave the seat category. In addition, the utility model registration number 20-0236037 and the utility model registration number 20-0219931 and the Republic of Korea Patent Registration No. 10-0277280 as a dry and wet mixing method, but these methods are all or part of the screen walking only As a method of grinding with impactor, this method has only one impactor process of concrete, so it is not possible to completely peel off the cement mortar, and also has low throughput, and a consistent method that omits the classification treatment of aggregate and sludge and post-treatment of turbid water no.

As an example of the prior art, the raw material waste concrete, which is primarily processed, is transferred to the conveyor belt 1 through the hopper 10 as shown in the process diagram of FIG. 1 disclosed in Korean Patent Application No. 10-2000-0068357, which is applied for a patent. Crushed coarse particles remaining through the dry screen (2) into the short-head type cone crusher (3) to pass through the dry screen (2c) and the remaining pass through the screen crushed by the roll crusher (5) The combined treatment or the whole amount is bypassed (bypass) without going through the screen (2c), and once the dry crushed abrasion from the impactor (6) is filtered through the wet screen (2a) to pass through the sand product, the screen (2a) ) The particles that pass through the top are crushed and polished once in the impactor (7) and reinserted into the bottom of the screen (2a). The screen passes through the sand product, and the coarse particles that pass through the screen are coarse aggregate. Emission production process. In the middle of this process system, the raw material of small particles is first filtered through the hopper 10a through the wet screen 2a, and particles of about 5 mm or less passed through the screen are re-inserted into the screen 2c by a variable circuit. It is a process of producing into recycled aggregate by filtering the input into the top of the screen 2a through the impactor (6).

If necessary, the coarse particles remaining on the screen are transferred to the conveyor belt by a variable circuit, processed by the impactor 7, and supplied from the hopper 10a, and passed through the input screen net at the bottom of the screen 2a. Is to be transferred to the screen 2c of the hopper 10 line, but it is not possible to transport and process the slurry in the state of slurry (mixture of water and fine particles) passing through the bottom of the wet screen 2a to the belt. to be. In addition, the recycled aggregate manufactured by such a process is mostly produced by dry marbling peeling with only one impactor in the case of sand to separate the cement mortar of the waste concrete from the aggregate, and the coarse aggregate is subjected to two peeling treatments. In this way, complete removal of cement mortar cannot be expected for both coarse and three aggregates (sand). The following physical property test results of the prototypes 1 and 2 were carried out in the same manner as the test method. The absorption rate was 6.69% to 8.65% by weight, and the specific gravity was 2.13∼2.26. Did not satisfy.

In addition, the raw material of small particles such as stone powder introduced through the hopper 10a is reprocessed by changing the path by the variable conveyor, which is in the form of a slurry that has only been cleaned and classified with the screen below the screen 2a. This is a technically impossible way.

There is a problem that the grinding and peeling is not completely made by passing the impact concrete only once through the impactor.

The present invention has been made to solve the above problems, and has the following object.

first; Unlike the prior art manufacturing method and apparatus, two or more kinds of raw materials can be simultaneously processed by a single hopper, and magnetic separation over several times to completely remove foreign substances that have not been removed during the first processing of the raw materials. And 친환경 It is an eco-friendly method to prevent dust from scattering during processing by effectively removing the foreign substances by sorting by wind removal and floating method to prevent dust scattering during processing, and to reduce the adhesive strength of waste concrete. The present invention provides a method and apparatus for producing recycled aggregates that can be economically mass-produced by efficient disintegration polishing and peeling treatment.

second; Since it is not easy to remove the cement mortar from the waste concrete, the impact disintegration and polishing stripper is repeated several times to remove the cement mortar almost completely and to make the classification environmentally friendly to make coarse aggregate and three aggregates (sand) like the natural state.

third; Low cost by cutting and polishing with specialized models of rock and metal type and rock on rock type vertical shaft impactor with excellent crushing, granularity improvement and peeling action To improve efficiency and quality, as well as to produce high-quality recycled aggregates in an efficient and efficient process, thereby reducing production costs and reducing production costs of the plant according to the unit of production. To provide.

fourth; In order to effectively remove the cement mortar of coarse aggregate, which is difficult to remove cement mortar from the crushing and peeling of aggregates contained in the waste concrete, the aggregate and the aggregate come together to sharpen the cement mortar. Repeated treatment three times or more with a box-type Vertical Shaft Impactor to prevent lowering of specific gravity and an increase in absorption rate, so it is easy to control the physical properties of high quality 19mm to 20mm recycled aggregate and 4mm to 6mm recycled aggregate It is to provide an aggregate manufacturing method and apparatus that can produce.

fifth; Particles of foreign matter such as Styrofoam, plastic, and wood that can remain in recycled aggregates are recycled into three aggregates and slag. The present invention provides a method and apparatus for producing regenerated aged aggregate that enables the production of high quality aggregates by removing foreign substances once more with a multiple classifier that simultaneously classifies turbid water and foreign substances.

1 is a process flow diagram for producing recycled aggregate from the conventional construction waste (waste concrete),

2 is a system diagram showing the overall structure of a method, process and apparatus for producing recycled aggregate using waste concrete according to the present invention;

3 is a structural diagram of a sorting machine (Sorting) for removing foreign matter according to the present invention

Figure 4 is a structure of the aggregate and cement mortar crushing and peeling machine (impact V. S. I.) according to the present invention

5 is the recycled sand and slag of the present invention recycled aggregate manufacturing apparatus. And Multiple Classifier Structure Diagram

* Explanation of symbols for main parts of the drawings

01... … Hopper and Vibration Feeder 04. … Sorting

02... … Belt magnet magnetic wire wall 06. … First compression shredder

07... … First dry vibration screen 12... … .2 Wet Vibrating Screen

11... … .Vertical shaft impact

14... … Multiple Crash Fire (Multiple Classifier)

17... … Hydro cyclone

18... … Sludge feed variable switch 15... … . Debris remover

19... … Thickener 21... … . Filter press

Recycled aggregate production method using the waste concrete according to the present invention for achieving the above object as the process of Figure 2

a) supplying to the conveyor by a hopper and a vibrating feeder (01) for inputting the waste concrete raw material treated first of construction waste;

b) removing the large foreign matters by hand during the transportation of the supplied raw material to the conveyor, and removing magnetic substances such as iron type by the first belt magnet charity machine (02);

c) Sorting by the floating method using water after removing foreign materials such as primary vinyl and textiles using wind (Fan) (03-1) to remove large foreign materials and magnetic foreign substances in step b) ( 04) Method to effectively remove foreign substances (eg, wood and plastic) that are light in weight, dehydrate water with dehydrator (05), transfer turbid water to the thinner, and process raw materials to the extent that moisture content can pass through the dry screen. Doing; Wow

d) Short the waste concrete from which the foreign matter is removed in step c) is shortened to 20 mm to 24 mm or less of coarse aggregate size (25 mm) contained in the waste concrete in order to enhance the effect of peeling off the shot. Crushing with a head compactor;

e) Filtering the waste concrete crushed in step d) above the first vibrating screen 07 to a screen net scale of 20 mm to 24 mm or less, and the large particles passing through the screen remain in the first compression crusher 06 again. Particles of 20mm to 24mm or less that were re-injected and passed through the screen net were made of wood chips, vinyl, etc., and a second belt magnet charity machine (08) with a second fin (03-2). Secondly removing the materials;

f) The first impact-type crushing polisher peeler 09, which has been filtered in step e) and removed from the substance, is a rock and metal type having a higher crushing efficiency than the polisher peeling. Pulverizing and grinding off the cement mortar attached to the aggregate with a vertical shaft impactor (09);

g) filtering the first pulverized and peeled off in the step f) into a wet screen which is a water sprinkling device at the bottom of the first vibrating screen; Wow

h) Sliding the bottom screen in step g) to about 1mm to 5mm scale of the screen net according to the properties of the raw material. The removal and washing effect has the effect of increasing the secondary crushing grinding and peeling effect, the particles of 1mm to 5mm or less particle size passed through the screen is filtered by the dehydrator 10 and remaining in the dehydrator 10 of the 1mm to 5mm or more of the particles passed through The step of conveying to the impact disintegration polishing machine 11 combined with the remaining passage on the bottom screen of the first vibrating screen; Wow

i) Impacted by putting in the vertical shaft impact (11) of the rock and rock type (Rock on Rock type) excellent in grinding and peeling action by the stones and stones collide with each other by centrifugal force transferred in step h) Secondly disintegrating the polishing stripping process;

j) The second disintegrated marbling peeled off in step i) is put into the upper end of the wet second vibrating screen 12 equipped with a water spray, the upper end is filtered through the screen of 5mm to 8mm, the stop 1mm to 5mm and 휀 (03- 3) removing the foreign matter by the third wind and transported to the vertical shop impact machine (13); Wow,

k) The remaining and passed on the upper and middle screen in step j) is put into a vertical shaft impact (13) of rock and rock type (rock) rock type (13) by impact impact crushing Grinding off;

l) filtering the marbling peeled off in the third step k) into a wet type 4mm to 6mm net at the bottom of the second wet vibrating screen 12; Wow

m) 4 mm to 6 mm or less passed through the screen in the process of filtering to the bottom of the second wet vibrating screen 12 in step l) is transferred to the multiple crash fire classifier 14, and 4 mm to passed through on the screen. Discharging more than 6mm into the recycled aggregate aggregate product; Wow

n) The slurry of 6 mm or less particles in turbid water conveyed in step m) is recycled to the multiple crashfire classifier 14 by the spiral screw of the slurry tank of the multiple flashifier classifier 14 simultaneously with the classification of the reclaimed sand and sludge. The slag at the rear of the slurry tank by moving the coarse particles to the bucket wheel, turning it upside down to float the foreign matter. Removing foreign matter by moving to the turbid water discharge port with a foreign material remover 15; Wow

o) The turbid water discharged in step n) is a hydrocyclone (17) classified using centrifugal force and drag of water, and the fine grains of 200 mesh or more are classified into 200 mesh at the classification point of 200 mesh. Separating into less than sludge; Wow

p) Regenerated fine aggregate (sand) of the coarse particles moved to the bucket wheel in step n) is added to the granules delivered by the bucket wheel and fine granules classified in the o) step into the dehydrator 16 and then regenerated fine aggregate (sand) Discharging) into a product; Wow

q) If the particle size of the recycled three aggregate products put into the dehydrator in step p) is less than 100 mesh due to the properties of the waste concrete, the hydrocyclone process works as necessary to control the particle size, specific gravity and absorption rate. By omitting the short wave 18 and changing the circuit, the turbid water discharged from the multiple credits 14 is directly precipitated by the sludge transported to the crusher 19 to treat the fine granules, improve the specific gravity and decrease the absorption rate. Adjusting step can be; Wow

r) The post-treatment of the sludge turbid water separated in steps c) and h) and o) and q) is environmentally friendly, and the purified water is recovered and reused. Coagulating and purifying the sludge turbid water and the sludge turbid water transferred in steps h) and q) with a polymer coagulant dosing added to Sikhna 19; Wow

s) transporting and storing the concentrated sludge coagulated and precipitated in the schna 19 of the step r) between the 20;

t) dehydrating the concentrated sludge stored in the step s) into the filter press 21 by a predetermined amount to cake and discard the cake sludge; Wow

u) recovering and reusing the water purified in the dewatering process of the filter press 21 in step t) and the water purified in the schna 19 in step r); It characterized in that it comprises a recycled aggregate manufacturing method including.

Waste concrete recycling machine and apparatus for producing waste concrete of the present invention for achieving the above object as a hopper and vibration feeder for injecting the raw materials such as waste concrete and stone powder of the first-treated construction waste as shown in FIG. Device;

A first belt magnet machine (02) for removing magnetic materials such as iron type during conveyance to a conveyor to remove foreign substances of raw materials supplied from the vibration feeder;

Fan (03-1) device for removing the debris of the wood chips and vinyl in the wind in the process of dropping the waste concrete from the magnetic material is removed from the belt; Wow

A sorting machine (04) for removing foreign matters by using buoyancy of water from the waste concrete raw material from which foreign matters are removed by the wind power; Wow

Dehydration device (05) for removing the water of the waste concrete shot;

The first compression type crusher (06) for crushing the dehydrated waste concrete raw material is easy to control the crushing granularity large and small, it is a hydraulic type that can be flexibly processed without failure even in the ingress of strong foreign substances such as steel (鐵 材 類) Head cone crusher (06); and

The upper part of the crushed waste concrete is put into the upper end of the dry and separated by a rubber plate in the middle, the lower end of the composite first vibrating screen is a wet device with a sprinkler;

Particles that have passed through the upper screen screen of the first vibrating screen are re-injected and crushed into the first compression crusher (06), and the particles that have passed through the screen net are lightly debris to the second shock (03-2) during transfer to the belt. Fixed or belt magnets (Belt Magnet) (08) as needed to remove the magnetic material, such as removal and secondary materials;

The particles of the second magnetic material removed by the impact using a centrifugal force to hit the metal plate, broken, worn, and sharpened by using a rock and metal type (Rock on Metal type) vertically crushing and grinding Impact crushing polisher (09), which has excellent ability to disintegrate cement mortar attached to aggregate with a vertical shaft impact (09), and performs abrasion and peeling. ;Wow

A first vibrating screen (07) for filtering the first pulverized and polished by a wet feeding into the sprinkling sprinkler at the bottom of the first vibrating screen;

Dewatering device 10 for removing turbid water and dewatering the particles passing through the lower screen of the first vibrating screen; And

The coarse particles remaining on the screen at the bottom of the first vibrating screen and the three particles which have been dewatered and dehydrated through this screen are combined, and the stones and the stones having excellent marbling separation effect are broken together. Stone and stone impact abrasive peeling machine (11) of secondary stone grinding with a vertical shaft impact (10) made of a rock and rock type using the principle of mowing and wear; Wow

The second disintegrated grinding strip was put on the top of the second wet vibrating screen 12, and the wet wet vibrating screen 12 of 5mm to 8mm screen net and 1mm to 5mm screen at the middle and 4mm to 6mm at the bottom. An apparatus;

A third impact type abrasive peeling machine (13) for tertiary polishing and peeling after removing foreign matters by the wind power of the third shock (03-3) remaining in the upper and middle portions of the second wet vibration screen;

A second wet vibrating screen (12) filtering the screen netting 4mm to 6mm in a wet type, which has been subjected to the tertiary grinding and peeling to the lower screen;

A multiple classifier (14) classifier (14) for comprehensively classifying recycled fine aggregate, sludge, and foreign matter in the slurry state having a particle size passing through the bottom of the second vibration screen;

A dump for discharging and storing particles having a size of 4 mm or more and 20 mm or less passed through the bottom of the second wet vibration screen as regenerated coarse aggregate products;

The multiple classifier (14) classifier 14 is scraped from the slurry turbidity of the slurry state of 4mm to 6mm or less of the particle size transferred from the wet second vibrating screen to 150 deg. A bucket wheel classifier 14 for feeding; And

A foreign material remover (15) for removing foreign matters suspended in the classifier (14) tank;

A conversion shortwave 18 device that directly sends or removes the turbid water as needed, or sends the turbid water to a hydrocyclone;

A heterocyclone (17) device having a classification point of 200 meshes for separating three particles of 200 meshes or more and sludges of 200 meshes or less transferred through the slurry pump and the conversion shortwave (18);

Vibration dehydrator (16) for dehydrating the combined aggregate of more than 150 mesh of 4 to 6 mm or less and three or more particles of 200 mesh classified in a hydrocyclone classified in the multiple classifier (14) classifier 14; Wow

These dehydrators, debris separators and turbid water hydrocyclones and changeable short wave devices are devices which are connected to or attached to multiple classifier classifiers 14 and have organic functions with each other;

A dump for storing a particle size of 200 mm or more and 6 mm or less dehydrated in the dehydrator as regenerated sand products;

The sludge turbid water remaining after separating the tenants from the hydrocyclone (17) is treated with an automatic device for automatically dosing the polymer coagulant drug transported to Sichna (19), and purified by flocculating sedimentation and purification. The water is chicna 19 is a device that can be recovered and reused;

A furnace 20 for storing the coagulated precipitated sludge by using a slurry pump and a pipe;

It is characterized in that it comprises a large-capacity filter press 21 of the membrane type or chamber type to make the stored agricultural sludge withdrawal by dehydration by a predetermined amount.

When explaining the structure and function of the important machine and apparatus of the new model of the production of recycled aggregate as follows.

first; 2 and 3, the raw material having a wide width of about 2m in the guide device 301 to prevent the raw material falling from the foreign material removal belt conveyor of the process diagram and the tank 300 filled with the foreign material removal device filled with water When the raw material falls on the wide belt conveyor designed to not slip during transportation (302), light debris is floated on the water, and the raw material is transported to the dehydrator (05) by the conveyor (302), and the injured debris moves to the rear. The sediment of the three particles removed by 304 and precipitated by turbid water and vortex due to the operation is continuously removed by the belt remover 303 which sweeps up the tank iron plate while rotating in reverse, and is combined with the dehydrated turbid water (19). Inverse gradient by vibrating force of vibrator 305 combined with transfer to top conveyor 302 or into dehydrator 05 The dehydration while passing through the dehydration screen is carried out to the compression crusher 06, which is the next step, and the dewatered turbidity is combined with the sludge of the belt remover 303 to be transferred to the chicna 19 and the sludge of the multiple classifier 14 is carried out. It is a sorting device, characterized in that the coagulation sedimentation treatment.

second; 2 and 4, in order to effectively remove the cement mortar of the waste concrete in the crushing polishing stripper, the vertical shop impact machine of the rock and metal type (ROCK ON METAL) crushing the aggregate portion of the aggregate and cement (09) 4 is sprinkled through the rotor tip by centrifugal force by the high-speed rotation of the rotor 402 which rotates the raw material guided to the raw material inlet 401 mounted on the vertical shop 404 as shown in "a" in the housing ( It is further provided with an impact crusher (09) having excellent characteristics of crushing (crushing) by being crushed on the high-strength metal plate of the anvil (403) mounted on the 400,

"B" in Fig. 4 is a vertical shop impact machine 11 excellent in the grinding and peeling action of cement mortar as the stone and the rock (ROCK ON ROCK) by tapping and abrasion each other, the raw material injected into the raw material inlet 411 rotor Rotation force of the vertical shop 414 equipped with 412 rotates the rotor 412 at high speed so that the raw material sprayed through the three rotor tips with centrifugal force is attached to the housing 410 to be lined with large and small particles of the raw material. As the rock box 413 is being rotated and the raw material newly sprayed from the rotor 412 is crushed and worn by each other, it is a stone and stone vertical impact impactor with excellent grinding and peeling action. It is further provided. Therefore, it is characterized by improving the quality by effectively removing the cement mortar adhered to the aggregate by mixing a stone and a metal and a stone and stone type vertical impact impactor repeatedly.

third; Referring to FIGS. 2 and 5, the multiple clash fire 14 includes a slurry tank 501 into which a slurry (water containing sand and sludge) flows through the second wet vibration screen 12. The slurry tank 501 with a screw 502 for moving the sand in one direction and turning it upside down to lift up the foreign matter, and the sand transferred to the screw 502 are lifted up with a bucket wheel 503 It further includes a dehydrator 16 for dewatering the vibrator 504 and a debris remover 15 for finally removing the injured debris.

The hydrocyclone 17 for classifying the sludge turbidity and the finely divided sludge from the sludge turbidity classified from the multiple crustifier 14 is a turbidity tank 511 for storing the finely divided slurry turbidity water classified from the multiple crustifier 14. ), And the slurry turbid water is pumped by a pump 512 to classify fine grains and sludge using vortices by the drag of water using centrifugal force and gravity, and the three separate incidences are supplied to the dehydrator 16. And the sludge turbid water separated from the hydrocyclone body 513, and the sludge precipitated is recovered to the turbidity tank 511 and the upper sludge is supplied to the slicker 19. It is provided. Regeneration of the turbid water containing 100 mesh to 200 mesh tenants of bucket water classified by bucket wheel for conversion of particle size and specific gravity absorption rate by converting short wave (18) during the transfer to slurry pump. It is further provided with a conversion short wave that can adjust the particle size distribution, specific gravity, and water absorption by controlling the amount of fine particles less than 100 mesh of fine aggregate.

fourth; In the above manufacturing process, sludge is removed by a wet screen over two times, and the entire amount is repeated with a three-time impact crushing grinding peeler, thereby maximizing the effect of cutting the cement mortar by crushing the grinding mortar with large and small particles to produce high quality recycled aggregate. This is possible and there are features that can improve productivity.

fifth; It is equipped with a device that completely removes foreign substances such as vinyl fibers by removing metals and wind classification by magnetic force lines, and completely removes these substances over 2 to 3 times, respectively, in wood plastics, etc. by floating method with water. As it can control the proper moisture content, it can reduce the adhesive strength of the waste concrete to facilitate the crushing, grinding and peeling, so that it can efficiently produce high quality recycled aggregate.

Sixth; It is further provided with a plurality of conveyors for supplying to each of the recycled aggregate manufacturing apparatus.

Seventh; The first vibrating screen is provided with a rubber plate at the middle stage, and the screen is mounted on the upper and lower portions of the rubber plate, and consists of two stages. As the composite screen of the screen, one screen acts as two different screens at the top and bottom, and can handle twice as much as dry and wet functional processing, and the second wet vibrating screen can be put and processed at the top and bottom. It is further provided with a feature to serve as two screens each.

Eighth; In order to enhance the effect of crushing and polishing the recycled aggregates, and to improve the properties and quality, the middle screens of the wet screen net and the second wet vibrating screen at the bottom of the first vibration screen are sludge but have the function of removing and cleaning the screen net scale from 1mm to 5mm. It is further equipped with a device, which can be adjusted as needed and can maximize mortar removal effect to the tenants by adjusting the screen network and filtering circuit.

Needless to say, the method and apparatus for producing recycled aggregate of the present invention as described above can be practiced with many modifications without departing from the spirit and scope of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIG. 2.

Recycling aggregate manufacturing method according to the present invention comprises the steps of: a) supplying the construction waste to the conveyor with a hopper and a vibration feeder (01) for inputting the waste concrete raw material of less than 40mm primary treatment; Wow

b) removing the large foreign substances by water repair during the transportation of the supplied raw material to the conveyor and the magnetic material such as steel materials by the first belt magnet charity machine (02); Wow

c) Remove the foreign matters with heavy specific gravity by using a pen (03-1) to remove foreign substances such as vinyl, textiles, etc. by wind, and then sort them by floating method using water (04). Effectively removing foreign matters (wood, plastic), dewatering the water with a dewatering screen (05), soaking or conveying turbidity, and raw materials dehydrating to a degree that the water content passes through the dry screen well; Wow

d) crushing the waste concrete from which foreign matters were removed in step c) with a short head compactor, which is a first compression crusher (06), of 20 mm to 24 mm or less of coarse aggregate size (25 mm) or less in order to enhance the effect of crushing and grinding ; Wow

e) Filtering the waste concrete crushed in the step d) above the first vibrating screen (07) to dry less than 20 to 24mm screen screen scale, the large particles remaining on the screen again to the first compression crusher (06) Particles of 20 mm or less and 24 mm or less that have passed through the screen net again are subjected to wind screening of 03-2 and a second belt magnet charity machine 08 to remove foreign matters such as steel materials. ; Wow

f) The first impact-type crushing abrasive peeler (09), which is filtered in step e) and the magnetic material is removed, has a high crushing efficiency of rock and metal vertical shop impact machine. pulverizing and grinding off the cement mortar adhering to the aggregate with a vertical shaft impact;

g) wet filtering the primary pulverized and peeled off at the bottom of the first vibrating screen (07) by using a sprinkling device in the bottom of the first vibrating screen (07); Wow

h) In step g), the bottom screen has a scale of about 1 mm to 5 mm, depending on the properties of the raw material, to have the effect of increasing the secondary crushing grinding and peeling effect by removing sludge, and passing the screen from 1 mm to 1 mm. Particles having a particle size of 5 mm or less are filtered through the dehydrator 10, and the particles of 1 mm to 5 mm or more passed through the residual water in the dehydrator 10 are transferred to the impact disintegration grinding machine according to the residual passage in the lower screen of the first vibrating screen. ; Wow

i) Impacted by putting in the vertical shaft impact (11) of the rock and rock type (Rock on Rock type) excellent in grinding and peeling action by the stones and stones collide with each other by centrifugal force transferred in step h) Secondly disintegrating the polishing stripping process;

j) The second disintegration grinding step peeled off in step i) is placed on the top of the wet second vibrating screen 12, the top of the screen is 5mm to 8mm screen, the middle of the screen is 1mm to 5mm, the bottom is 4mm to Filtering with 6mm mesh;

k) After passing through the wind screen of -3 (03-3), the vertical shaft impactor of the rock and rock type is passed through the remaining and passed on the upper and middle screens in step j). Step (13) to the third impact crushing grinding marbling peeling;

l) 4 mm or less and 6 mm or less passed through the screen in the process of filtering by the third wet vibrating screen 12 at the bottom of the second wet vibrating screen 12 in step k) are transferred to the multiple classifier classifier 14. Doing;

m) discharging 4 mm to 6 mm or more of the residue passed on the screen in the process of filtering to the bottom of the second wet vibrating screen 12 in the step 1) as a recycled aggregate product; Wow

n) The slurry water of 6 mm or less particles transferred in the step l) is recycled to the multiple credits classifier 14 with the spiral screw of the slurry tank of the multiple classifier classifier 14 simultaneously with the classification of the reclaimed sand and sludge. Moving the coarse particles to the bucket wheel, turning the particles upside down to float the foreign matter to the sludge turbidity outlet at the rear of the slurry tank to remove the foreign matter with the foreign material remover 15; Wow

o) The turbid water discharged in step n) is a hydro-cyclone (17) classified using centrifugal force and drag of water, and the fine particles of 200 mesh or more meshes are classified into 200 meshes. Separating into less than sludge; Wow

p) Regenerated fine aggregate (sand) of the coarse particles moved to the bucket wheel in step n) is added to the granules delivered by the bucket wheel and fine granules classified in step o) into the dehydrator 16. Discharging it into sand) to produce it; Wow

q) If the particle size of the regenerated aged aggregate product dewatered into the dehydrator in step p) is less than 100 mesh due to the properties of the waste concrete, the hydrocyclone process works as necessary to control the particle size, specific gravity, and absorption rate. By omitting the circuit and converting the circuit into the conversion shortwave 18, the turbid water discharged from the multiple credits 14 is directly precipitated and treated by the sludge transferred to the crusher 19 to improve the particle size, increase the specific gravity, and decrease the absorption rate of the recycled fine aggregate. Adjusting step to improve the quality; Wow

r) The post-treatment of the sludge turbid water separated in steps h) and o) and q) is environmentally friendly to recover and recycle the purified water, characterized in that the sludge turbidity classified in the hydrocyclone of step o) (17) And coagulating and precipitating and purifying the sludge turbid water transferred in steps h) and q) with a polymer coagulant dosage in Sikhna 19; Wow

s) transporting and storing the concentrated sludge coagulated and precipitated in the schna 19 of step r) between the passages 20;

t) taking out the concentrated sludge stored in the step s) in a predetermined amount, and dehydrating the cake sludge into the filter press 21 and discarding the cake;

u) recovering and reusing the water purified in the dewatering process of the filter press 21 in step t) and the water purified in the schna 19 in step r); It characterized in that it comprises a recycled aggregate manufacturing method including.

Figure 2 is a system diagram showing the overall process system structure of the apparatus for manufacturing recycled coarse aggregate for construction and fine recycled aggregate (sand) according to the present invention suitable for realizing the recycled aggregate manufacturing method.

First, the apparatus for producing recycled aggregate having such a systematic diagram increases the efficiency of crushing and polishing and classifying by mixing dry and wet treatment methods, and by means of stones and metals, high crushing (concrete is decomposed) Vertical shaft impactor with impact disintegration and grinding and peeling using centrifugal force with excellent effect of cutting edge and cement mortar by bumping each other and stone and stone, and peeling cement mortar attached to the uneven part of aggregate. By repeating the process, the cement mortar can be completely removed to increase the specific gravity of aggregate properties and to reduce the absorption rate, thereby making aggregate close to KS regulation.

The aggregate manufacturing apparatus and the process system of the embodiment for producing the recycled aggregate for construction and three aggregate aggregates according to the present invention is configured as follows.

Waste concrete recycled aggregate manufacturing machine and apparatus of the present invention for achieving the above object as a hopper and vibration feeder (01) to feed the raw materials such as waste concrete and stone powder of the first-treated construction waste as shown in FIG. Device;

A first belt magnet charity (02) for removing magnetic materials such as steel materials during conveyance by a conveyor to remove foreign substances of raw materials supplied from the vibration feeder;

Fan (03-1) device for removing the foreign matter vinyl by the wind in the process of dropping the waste concrete from the magnetic material is removed from the belt; Wow

Sorting (04) for removing the foreign matter using the buoyancy of the water to the waste concrete raw material is removed foreign matter by the wind power (Sorting) (04); Wow

Dehydration device (05) for removing the water of the waste concrete shot;

The first compression type crusher (06) for crushing the dehydrated waste concrete raw material is easy to adjust the crushing degree large and small, it is a hydraulic type that can be flexibly treated without failure even in the inflow of strong foreign substances such as steel (鐵 材 類) Head cone crusher (06); and

A composite first vibrating screen (07), wherein the top of the crushed waste concrete is filtered and put into the upper part and the lower part is a wet device using a sprinkler; and

Particles remaining on the upper screen screen of the first vibrating screen are re-injected and crushed in the first compression crusher (06), and the particles passing through the screen net are transferred to the wind sorting device (03-2) and the belt. A fixed magnet or belt magnet (08) as necessary to remove foreign substances such as steel materials on the way as needed; and

The particles of the second magnetic material removed by the impact using a centrifugal force to hit the metal plate, broken, worn, and sharpened by using a rock and metal type (Rock on Metal type) vertically crushing and grinding Impact crushing polisher (09), which has excellent ability to disintegrate cement mortar attached to aggregate with a vertical shaft impact (09), and performs abrasion and peeling. ;Wow

A first vibrating screen (07) which wetly filters the first pulverized and polished by an injection sprinkler at the bottom of the first vibrating screen; and

Dewatering device 10 for removing turbid water and dewatering the particles passing through the lower screen of the first vibrating screen; And

The coarse particles remaining on the screen at the bottom of the first vibrating screen and the three particles which have been dewatered and dehydrated through this screen are combined, and the stones and the stones having excellent marbling separation effect are broken together. Stone and stone impact grinding machines with secondary grinding with a vertical shaft impact (10), made of rock and rock type using the mowing and abrasion principle (11) ;Wow

The second pulverized marbling peeled off with a screen of 5mm to 8mm at the top and 1mm to 5mm at the middle and 4mm to 6mm at the bottom and the wet second wet vibrating screen 12 device sprayed on the top and the bottom ;

A third impact type abrasive peeling machine (13) for tertiary grinding and peeling of the residue passing through the upper end and the middle of the second wet vibration cleaning machine;

A second wet vibrating screen (12) filtering the screen netting 4mm to 6mm in a wet type, which has been subjected to the tertiary grinding and peeling to the lower screen;

A multiple classifier (14) classifier (14) for comprehensively classifying recycled fine aggregate, sludge and foreign matter in the slurry state of the particle size passing through the bottom of the second vibration screen;

A dump for storing and discharging 4 mm or more of particles passed through the bottom of the second wet vibrating screen as recycled coarse aggregate product;

The multiple classifier (14) classifier (14) is a dehydrator by scraping 150 mesh (mesh) to 200 mesh or more in the slurry turbidity of the particle size of 4mm to 6mm or less transferred from the wet second vibrating screen Bucket wheel classifier 14 to put in; And

A foreign material remover (15) for removing foreign matters suspended in the classifier (14) tank;

A conversion shortwave device (18) for sending the turbid water directly to the seeker or the turbid water to the hydrocyclone, if necessary, to remove the foreign matter;

A heterocyclone (17) device having a classification point of 200 meshes for separating three particles of 200 meshes or more and sludges of 200 meshes or less transferred through the slurry pump and the conversion shortwave (18);

Vibration dehydrator (16) for dehydrating the combined three aggregates (sand) of more than 150 mesh and 4 mm or less and 6 mm or less classified by the multiple classifier classifier 14 and three particles or more of 200 mesh classified in a hydrocyclone And these dehydrators, foreign material separators and turbid water hydrocyclones and changeable short wave devices are devices which are connected to or attached to a multiple classifier classifier 14 to have organic functions with each other;

A dump for storing a particle size of 200 mm or more and 6 mm or less dehydrated in the dehydrator as regenerated sand products;

Slag remaining after separating the tenants from the hydrocyclone (17). The turbid water is transferred to the chicna (19), which is an automatic device for automatically dispensing the polymer coagulant drug. 19);

A furnace 20 for storing the coagulated precipitated sludge by using a slurry pump and a pipe;

It is characterized in that it comprises a large-capacity filter press 21 of the membrane type or chamber type to make the stored agricultural sludge withdrawal by dehydrating a predetermined amount. Table 1 shows the results according to the embodiment of the present invention and the physical property test by the same method as the detailed description of the embodiment of the method and apparatus of the present invention by the method of the prior art.

Table 1 Example Prototype Property Test Results Table

Example 1

As a result of the physical test of the recycled aged aggregate, which was first treated with the impactor by the same method as in the prior art, the first treatment of the waste concrete as in Example 1 of Table 1 showed a specific gravity of 2.32, a specific gravity of 2.13, and an absorption rate of 8.65% by weight. KS standard value of specific gravity of 2.5 or more, the absorption rate was not satisfied below 3% by weight.

<Example 2>

As a result of the test of the physical properties of the recycled aged aggregate, which was first treated with waste concrete in the same manner as in the prior art, the first treatment of waste concrete as in Example 2 of Table 1 showed a specific gravity of 2.42, a specific gravity of 2.26, and an absorption rate of 6.69% by volume. It did not satisfy the KS standard value of specific gravity of 2.5 or more and absorption rate of 3% by weight or less.

Example 3

As shown in Table 1, the first treatment of the waste concrete was prepared in the same manner as in the present invention, and in particular, the physical property test result of the three aggregates which were processed three times through the impactor and did not adjust the particle size, the specific gravity 2.49, Absorption specific gravity was 2.45, water absorption was 4.15% by weight, and it was detected as a result that the KS standard value was 2.5 or more and water absorption was less than 3% by weight.

Example 4

As shown in Example 4 of Table 1, the first treatment of the waste concrete was manufactured in the same manner as the present invention, and in particular, the physical property test result of the three aggregates treated with three passes through the impactor and the particle size control resultant specific gravity 2.51, Prototypes with a specific gravity of 2.50 and an absorption rate of 2.89% by weight satisfying the KS standard specific gravity of 2.5 or more and an absorption rate of 3% by weight or less were made.

The recycled aggregate manufacturing method and apparatus of the present invention as described above has the following advantages.

First, it is possible to prevent the environmental pollution and to make the waste resources useful by using recycled aggregates and fine aggregates that are recycled by treating them with reused construction wastes generated by tens of millions of tons annually. .

Second, to increase productivity by producing recycled aggregate and fine aggregate for ready-mixed concrete with waste concrete in a consistent process. Can reduce the

Third, foreign matters can be completely removed by removing impurities from building wastes in five times. In particular, the sorting device has a characteristic that fine wood chips settle in the water when woods are crushed and crushed and polished. By removing it by floating method beforehand and using dry and wet treatment method, it is possible to adjust the appropriate amount of moisture necessary for the whole process of crushing and grinding of waste concrete raw material and separating and classifying treatment. It is an environmentally friendly manufacturing method that can prevent dust scattering.

Fourth, the primary compression crushing and the crushing grinding and peeling are repeated in three times. The effect is that the stone and the metal and the stones collide with each other and are broken, shaved and worn, thereby removing cement mortar and the angle. The improvement in the shape of the mold is maximized, which can solve the problems of specific gravity and absorption rate, which are difficult to recycle aggregate. In other words, it is possible to increase the specific gravity of the recycled aggregates and lower the absorption rate, thereby producing and providing recycled aggregates suitable for interlocking and cement brick manufacturing raw materials and mixed concrete ready-mixed concrete production.

fifth. The main process of regenerated aggregate manufacturing is to produce a regenerated aggregate product that effectively removes the cement mortar and has the same roughness as natural aggregates by cutting the hair by impacting the stone with the centrifugal force. In this case, the error rate of the vertical determination of the product is 53% by weight or more, and the finely divided finely recycled recycled aggregate has the economic effect of reducing the amount of cement by increasing the concrete strength by increasing the workability and density and adhesion of concrete.

Sixth, the first impact-type crushed grinding slag of waste concrete that was peeled off by wet screening in the state of turbidity. The turbid water is washed by transporting with a thinner to remove cement chips and tenants to adjust the particle size, and the tenant is removed to improve the efficiency of secondary disintegration and polishing. Through this process, the series of processes such as adjusting the screen net scale according to the degree of peeling and polishing increases the specific gravity of the product and lowers the absorption rate, so that it is possible to produce high quality recycled aggregate. In addition, waste resources can be made into useful resources and recycled into building materials.

Claims (7)

In the method for treating recycled aggregate in the process as shown in Figure 2 a) a step of supplying the waste concrete raw material into the hopper and the vibration feeder (01) to feed the conveyor; b) removing the foreign substances such as iron and foreign materials with a belt magnet charity machine (02) by removing the large foreign substances by water repair during the conveyance of the raw material supplied in step a) to the conveyor; Wow c) The foreign matters removed in step b) are removed by wind using a pen (03), and then the foreign matters (eg, wood, plastic, etc.) having a low specific gravity by the sorting method (04) by the floating method using water. ) To effectively remove the water, dewatering the water with a dewatering screen (05), the turbidity is transferred to the thinner, the raw material is dehydrated to the extent that the moisture content can pass through the dry screen well; Wow d) crushing the waste concrete from which foreign matter is removed in step c) with a first compression crusher (06) with a coarse aggregate size (25 mm) of 20 mm to 24 mm or less; Wow e) Filtering the waste concrete crushed in step d) above the first vibrating screen (07) to dry less than 20mm to 24mm screen net scale, and the large particles that pass through the screen remain in the first compression crusher (06) Re-input and crushed, and passed through the screen net 20mm to 24mm or less particles to remove the foreign matter again by the wind power of 휀 and the magnetic material (08) to remove the magnetic material such as iron secondary; Wow f) The first impact crushing abrasive peeler, which is filtered in step e) and is made of a rock-on-metal type vertical shaft impact machine, in which the magnetic material is removed. (09) pulverizing and polishing off the cement mortar adhering to the aggregate as a first step; g) wet filtering the primary pulverized peeled water by using an injection water spray device at the bottom of the first vibrating screen (07); Wow h) In step g), the bottom screen is adjusted to a scale of 1 mm to 5 mm according to the physical properties of the raw material, and particles having a particle size of 1 mm to 5 mm or less passing through the screen are filtered through the dehydrator 10 to the dehydrator 10. The remaining 1mm to 5mm or more of the particles passed through the transfer step into the impact disintegration margarine peeler in combination with the remaining passed to the bottom screen of the first vibrating screen; Wow i) The rock and rock vertical rock impact impactor (11) having excellent grinding and peeling action due to the impact of centrifugal force and the stones transferred in the step h) by the centrifugal force. Secondly disintegrating the abrasive grinding treatment; j) the second pulverized marbling peeled in step i) is the upper 5mm to 8mm screen, the middle of the screen of 1mm to 5mm, and the lower end of the wet second vibrating screen 12 of 4mm to 6mm mesh Input filtering step; k) The remaining and passed on the upper and middle screen in step j) is put into the vertical shaft impact (13) of the rock and rock type (Rock on Rock type) by the impact impact grinding grinding Peeling off; l) 4 mm or less and 6 mm or less passed through the screen in the process of filtering by the third wet vibrating screen 12 at the bottom of the second wet vibrating screen 12 in step k) are transferred to the multiple classifier classifier 14. Doing; m) discharging 4 mm to 6 mm or more remaining on the screen in the process of filtering to the bottom of the second wet vibrating screen 12 in step l) as a recycled aggregate product; Wow n) removing the turbid water in the slurry state of the particles of 6 mm or less transferred in the step l) with the multiple creditifier classifier 14 and the foreign material remover 15 simultaneously with the classification of the reclaimed sand and sludge; Wow o) the turbid water discharged in the step n) is a hydrocyclone (17) to the classification point 200 mesh separation into fine particles of 200 mesh or more and sludge less than 200 mesh (Mesh); Wow p) Regenerated three aggregates (sand) of the coarse particles moved to the bucket wheel in step n) are added to the granules delivered by the bucket wheel and fine grains classified in step o) into the dehydrator 16. Discharging to (sand) to commercialize; Wow q) The hydrocyclone process is omitted as necessary to adjust the particle size, specific gravity, and absorption rate of the recycled aged aggregate product, which is added to the dehydrator in step p), and the circuit is converted to a conversion shortwave 18. Adjusting the quality of the turbid water discharged from 14) directly to the sikna (19) by sedimentation to transport sludge to improve the particle size and specific gravity of the recycled fine aggregates and lower the absorption rate by the treatment; Wow r) The post-treatment of the sludge turbid water separated in the steps c) and h) and o) and q) is environmentally friendly and the purified water is recovered and reused. Coagulation and precipitation purification of the sludge turbid water and the sludge turbid water transferred in steps h) and q) with a polymer coagulant dosing added to Sikhna 19; Wow s) transporting and storing the concentrated sludge coagulated and precipitated in the schna 19 of step r) between the passages 20; t) taking out the concentrated sludge stored in the step s) in a predetermined amount, and then dehydrating the cake sludge by throwing it into the filter press (21); u) recovering and reusing the water purified in the dewatering process of the filter press 21 in step t) and the water purified in the schna 19 in step r); Method for producing recycled aggregate using waste concrete, characterized in that it comprises a. The method according to claim 1, wherein in order to prevent the decrease of specific gravity and high absorption rate due to the characteristics of the recycled aggregate, four times of crushing and crushing grinding removal and classification washing turbid water removal to remove the cement tenants to control the particle size, increase the specific gravity and lower the absorption rate Way. According to claim 1, the manufacturing apparatus and apparatus as shown in Figure 2 is a device consisting of a hopper and a vibrating feeder (01) that can be put together the raw materials such as waste concrete and stone powder first treated; A first belt magnet charity (02) which removes magnetic materials such as a repair device and steel materials during transportation to a conveyor to remove foreign substances of raw materials supplied from the vibration feeder; Fan (03-1) device for removing the foreign matter by the wind to the treated raw material; Wow Sorting (04) for removing the foreign matter using the buoyancy of the waste concrete raw material; Dewatering device for removing the moisture of the sorted waste concrete (05); And It is easy to adjust the crushing particle size of the dehydrated waste concrete raw material easily, and it is a hydraulic type that can be flexibly processed without failure even in the inflow of strong foreign substances such as steel. A first compression crusher 06 of the head compactor; and A composite first vibrating screen (07) having an upper end of the crushed waste concrete injected into the upper part and a lower end thereof being a wet device using a sprinkler; and Particles passing through the upper screen screen of the first vibrating screen is debris (03-2) device for removing foreign matter with wind power; Wow Charity machine (08) for removing the magnetic material such as iron secondary during the transfer of the wind-treated raw material to the belt; And Vertical secondary impactor made of rock and metal type of stone and metal peeled off by breaking the secondary magnetic material with a centrifugal force and crashing, abrasion, and shaving by using a centrifugal force. An impact crushing polisher having a vertical shaft impact (09); and A first vibrating screen (07) which wetly filters the first pulverized and polished by an injection sprinkler at the bottom of the first vibrating screen; and Dewatering device 10 for removing turbid water and dewatering the particles passing through the lower screen of the first vibrating screen; And Stones using the principle that the stone passed through the screen and the three particles dehydrated and dehydrated by passing through the screen and the stone and stone which are subjected to the grinding and peeling are broken, mowed and worn. Vertical shop impact machine (11) made of rock (Rock on Rock type); and A second wet wet vibrating screen (12) device mounted on the second disintegrating marbling peeled screen with a 5mm to 8mm screen net at the top and 1mm to 5mm at the middle and 4mm to 6mm net at the bottom and sprinkled at the top and bottom; Wow A third impact type abrasive peeling machine (13) for tertiary grinding and peeling the residual passage of the second wet vibration screen at the upper end and the middle part; and A second wet vibrating screen (12) which filters the third marbling and peeling by a 4 mm to 6 mm screen net in a wet-type sprinkler system at a lower screen; A multiple classifier (14) classifier (14) for comprehensively classifying recycled fine aggregate, sludge and foreign matter in the slurry state of the particle size passing through the bottom of the second vibrating screen; Wow A dump for discharging and storing the particles of 4 mm to 6 mm or more passed through the bottom of the second wet vibration screen as regenerated coarse aggregate products; A bucket wheel, a dehydrator, and a debris remover are installed to scrape and assemble the 150-mesh to 200-mesh or more granules from the slurry turbidity water of 4 mm to 6 mm or less particle size transferred from the wet second vibrating screen and put them into the dehydrator. Multiple classifier classifier 14; and A foreign material remover (15) for removing foreign matters suspended in the classifier (14) tank; A conversion shortwave 18 device for directly sending or removing the turbid water from the turbid water having the foreign matter removed, or sending the turbid water to a hydrocyclone; Wow A hard cyclone (17) device for classifying 200 mesh of turbid water transferred through the slurry pump and the conversion shortwave (18); Wow Vibration dehydrator (16) for dehydrating the combined aggregate of more than 150 mesh of 4 to 6 mm or less and three or more particles of 200 mesh classified in a hydrocyclone classified in the multiple classifier (14) classifier 14; Wow A dump for storing the particle size of 200 mm or more and 6 mm or less dehydrated in the dehydrator as regenerated three aggregate products; Sikhna (19) for the coagulation sedimentation purification of the sludge turbid water transferred in each step by a device for automatically administering a polymer coagulant drug; Wow (20) between the aggregated and settled sludge to be transported and stored by using a slurry pump and a pipe; Wow Apparatus for producing recycled aggregates using waste concrete, characterized in that it comprises a membrane-type or chamber-type large-capacity filter press 21 for extracting the stored farm sludge by dehydration to make a cake. 4. The foreign material removal sorting machine 04 of FIG. 3 is a guide device 301 which prevents the raw material falling from the belt conveyor from being separated, and 2m in a triangular tank 300 filled with water in the foreign material removing device. When the raw material falls on the wide belt conveyor (302), which has a width inside and is not slippery during the transportation of raw materials, light foreign matter floats on the water, and the raw material is transferred to the dehydrator (05) by the conveyor 302, and the injured foreign matter is foreign matter. The three-particle precipitates, which are removed by the removal device 304 and are precipitated by turbid water and vortex, are continuously removed by the rotating belt remover 303 while sweeping the bottom of the tank griddle and the raw materials conveyed to the wide conveyor 302. Dehydration is carried out while passing through the dewatering screen in the back gradient due to the excitation force of the vibrator 305 to the dehydrator (05). Recycled aggregate production apparatus, characterized in that transmission to be treated, such as sludge flocculation. 4 is a stone and metal vertical impact impact machine (09) of crushing the bonding portion between aggregate and cement, and the raw material inlet (a) of FIG. The raw material guided to the 401 is sprinkled through the tip of the opening by centrifugal force by the high speed rotation of the rotor 402 which is connected to the vertical shop 404 and the sprinkled raw material is mounted on the housing 400. Impact crusher (09), which has excellent characteristics of grinding and crushing (crushing) function on the high strength metal plate of Anvil (403); and "B" in Figure 4 is a rock and rock (ROCK ON ROCK) is a raw material impact impactor (11) and 13 is excellent in the abrasive mortar and peeling action of cement mortar, and the raw material is introduced into the inlet 411 Is injected into the rotor, and the rotational force of the rotor 412 connected to the vertical shop 414 rotates the rotor 412 at high speed and is sprayed with the tip through three outlets by centrifugal force to the housing 410. The force that comes out from the rock box 413, which is protected by the large and small particles of the raw material of box 413, and the new material coming out of the rotor 412 must be broken, mowed, worn, and polished. Apparatus for producing recycled aggregate using waste concrete, characterized in that it has a stone and stone vertical impact impactor (11) and (13) characterized by excellent peeling and peeling action. 5. The multi-cisifier 14 of FIG. 5 moves the slurry tank 501 into which the slurry (water containing sand and sludge) flows and the sand in the slurry in one direction to invert and float the foreign matter. Slurry tank 501 with a screw 502 is built, and the dehydrator 16 for dehydrating the sand moved by the screw 502 to the bucket wheel (503) to dehydrate the vibrator 504 and It is further provided with a foreign material remover 15 for finally removing the injured foreign matter. The hydrocyclone 17 for classifying the sludge turbidity and the remaining tenant sands from the sludge turbidity classified from the multiple crustifier 14 is a turbidity tank 511 for storing the finely divided slurry turbidity water classified from the multiple crustifier 14. ), And the hydrocyclone 513 pumping the slurry turbid water with a pump 512 to classify the fine sand and sludge using the drag and vortex of water using centrifugal force and gravity, and supply the separated fine sand to the dehydrator 16. The sludge turbid water separated from the hydrocyclone main body 513 is stored, and the precipitated sludge is recovered to the turbid water tank 511 and the upper sludge is supplied to the crusher 19 and the intermediate adjustment tank 514 and the particle size. Apparatus for producing recycled aggregate using waste concrete, characterized in that it further comprises a conversion shortwave (18) for adjustment. [4] The screen net of claim 3, wherein the middle screen of the wet screen net and the second wet vibrating screen at the bottom of the first vibrating screen has a function of removing sludge and washing to increase the effect of crushing and grinding the recycled aggregates of the recycled aggregate and to improve the physical properties and the quality improvement. It is possible to adjust the deposits as needed from 1mm to 5mm, and to protect screen screens of 1mm to 3mm by double-installing wire meshes of about 5mm on the top or bottom of the screen net when the screen net is fitted with 1mm to 3mm. Apparatus for producing recycled aggregate using waste concrete, characterized in that.