KR20010113624A - Method and apparatus for manufacturing agrregate - Google Patents

Abstract

Disclosed is a method and apparatus for producing aggregates suitable for the production of coarse aggregates and crushed sand using rock with high segregation. This manufacturing apparatus classifies the first hopper (1) into which the mixed rock and soil powder is introduced, and the soil and rock that have passed through the grizzly of the hopper by vibrating screen (4), respectively, A plurality of hoppers (10, 11, 12) for storing the rock passed through the remaining as the crushed rock crushed by the first compression crusher (3). From the ground powder storage hopper 10 and the stone powder storage hopper 12, respectively, the crushed and polished by the second crushing polisher 19 via the log crusher 18 is filtered through the second wet vibration screen to crushed sand and sludge. It is supplied to the high mesh classifier 21 to classify and separated and output to the crushed sand and sludge, the sludge turbid water is concentrated by a thickener and output to the sludge cake by filter press, the crushed rock stored in the hopper 11 is the first After crushing and crushing with a crushing machine, the coarse one is produced through the wet vibration screen 17 and coarse aggregate, and the powder size is sent to the second wet vibrating screen to produce crushed sand. Since the aggregate manufacturing apparatus is processed according to the type of aggregate particle size, the mass production is possible, the productivity is improved, and the operation rate can be increased by enabling continuous operation even when a part of the apparatus is broken.

Description

Aggregate manufacturing method and apparatus {Method and apparatus for manufacturing agrregate}

The present invention relates to a method and apparatus for producing aggregate for the production of coarse aggregates (coarse aggregates) and crushed sand (fine aggregates) for civil construction or rock from rock, and in particular, the segregated rocks mined in quarries or mines by crushing and grinding. It relates to a method and apparatus for producing aggregate suitable for producing crude aggregates and crushed sand.

In general, the process of producing aggregates by crushing rock collected from quarries or mines is usually produced separately by dividing into a manufacturing process for producing crude aggregate and a manufacturing process for producing crushed sand.

As described above, an aggregate manufacturing method and apparatus for solving problems such as productivity decrease due to separately producing coarse aggregate and crushed sand are disclosed in Korean Patent No. 0263819, which is illustrated in FIG.

The device temporarily separates the rock and tombs supplied through the hopper 611 into a grizzly feeder 610, and then passes the rock that has passed above the grizzly feeder 610 to the first shredder 612. After crushing, the aggregate aggregate storage tank 613 for storing the crushed rock and soil together, the vibration feeder 614, the second crusher 615 for crushing the rock passing through the vibration feeder, and the raw material rock A first vibration screen 618 for filtering the rock having a first size, a third crusher 616 for crushing the rock remaining on the first vibration screen 618, and a first vibration screen 618 A second vibrating screen 619 for filtering the second sized rock among the rocks passed through), a fourth crusher 617 for crushing the remaining rock on the second vibrating screen 619, and A third for filtering the rock having the third size among the rocks crushed by the fourth crusher 617 and outputting the rock as coarse aggregate And a fourth vibrating screen 621 for filtering the rock having the fourth size among the rocks passing through the third vibrating screen 620 and feeding it back to the fourth crusher 617. The fifth vibration screen 622 for filtering out the rock having the fifth size among the rocks passing through the fourth vibration screen 621 and outputting it as sand, and the sand unit for outputting sand by classifying / dewatering sand and sludge. 624, sediment / concentration means 625 for coagulating and concentrating water containing classified sludge, filter presses 626 for dewatering the concentrated sludge, and rocks passing through the first to fifth vibration screens. It consists of water injection means 623 for spraying water.

However, the aggregate manufacturing apparatus as described above has the following problems.

First, after mixing the raw powder and the soil powder in the storage tank 613, such as the rock crushed by the first crusher 612 again after classifying the soil powder in the hopper 611, the soil powder is mixed with the second crusher 615 By crushing the raw rock, the crushing efficiency is lowered.

In addition, the amount of crushing is also reduced by soil, and the clay of the soil is compressed and adhered to the secondary crushed rock (the clay powder does not fall off by spraying water only from the screen). As it adversely affects cement curing such as tannic acid and buminic acid in clay, the strength and durability of concrete are generally reduced.

Second, the maximum treatment capacity of the screen is generally 300t / hr, and the throughput of the first vibration screen 618 must be simultaneously filtered through the rock, stone, and soil crushed by the second and third crushers 615 and 616. The new capacity is about 200 t / hr, which is 70% of the capacity. 200t / hr of newly added raw material includes 70% of rock, 10% of stone powder, 10% by weight of clay, and 10% of fine powder, so it is a scale that processes 140t / hr of rock, 20t / hr of stone, and 30t / hr of soil. / hr corresponds to the return amount of the third crusher 616. Therefore, the production scale of the product of the system is coarse aggregate 110t / hr, the crushed sand is 70t / hr of the amount of crushed sand which is made from the stone powder and the soil generated in the 2,3 crushers 615, 616 and the rest is sludge.

Therefore, the device has a maximum throughput that can produce about 110 t / hr of coarse aggregate and about 70 t / hr of crushed sand.

The third vibration screen 620 has to re-inject about 200 t / hr of raw material rock of 25 mm or less and 0 mm or more from the third crusher 616 and about 60 t / hr of raw material rock remaining on the fourth vibration screen 621. The amount of newly input raw material of the vibrating screen 620 is only about 200 t / hr.

In addition, the third vibrating screen 620 forms a classification layer having a thickness of 5 cm or more because the amount of material to classify, such as re-crushing and input of residues, between the fourth vibrating screen 621 and is completely classified by sliding on the screen. As a result, the classification efficiency is lowered, thereby increasing the load on the third and fourth crushers 616 and 617, and as a result, the throughput is reduced. Therefore, it is possible to produce about 110t / hr of coarse aggregate and 70t / hr of coarse sand, and about 30t / hr to 45t / hr of sludge will occur, so it is possible to produce 300t / hr of coarse aggregate and 200t / hr of coarse aggregate. It is not enough, and there is a limit to the mass production, which leads to an increase in production cost.

In addition, the classifier that classifies sand and sludge, and the sludge, sedimentation tank, and filter press, which are the aftertreatment facilities, need to be over the facilities of 160t / hr production scale of sand, so there is a problem of excessive facilities compared to the production volume. Have. Therefore, by reducing the shredder and screen more than necessary, there is a problem that increases the production cost due to reduced productivity.

In addition, sand unit, which is a crushed sand and sludge separation dehydrator, pumps the whole slurry of crushed sand, sludge and water of less than 3mm or less than 4.75mm with a pump to pass through the hydrocyclone. Pipe and cyclone liner has a problem that the consumption cost is high because the wear loss is very high due to sand of less than 4.75mm.

In addition, when the segregation distributions of the raw material rocks having a large amount of segregation and the sedimentary segregation of sedimentary particles are large, large particles of 0.6 mm (30 mesh) or more generally form severe segregation. The segregation of less than 4.75mm is produced as a product that is classified as a crushed sand product in the vibrating screen 619, and the use rate of replacement with natural sand is 30% due to the assembly rate and particle size distribution, the result of the determination of granularity and the poor granularity. There is a problem that the low to -50% and the workability of the concrete is poor. In order to solve this problem, it is necessary to inject a large amount of stone powder and clay powder of 0.6 mm particle size or more into the impact crushing grinder (fourth crusher 617), but it is practically impossible.

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

First, to provide a method and apparatus for producing aggregate improved productivity by enabling the mass production by quantitative treatment by complementary treatment according to the type of aggregate particle size.

Second, unlike the conventional aggregate manufacturing method and apparatus, it is to provide a method and apparatus for producing aggregate that can increase the operation rate by enabling continuous operation even when a part of the apparatus failure.

Third, by improving the efficiency at low cost by processing with specialized models of crushing and improving the shape of granules, it is possible to reduce the production cost and reduce the production cost of the plant according to the production unit by producing various aggregates of high quality in a single process. There is provided a method and apparatus for manufacturing architectural aggregates.

Fourthly, classify soil generated from topsoil and rock of quarries introduced through hopper and store in separate hopper, and mix stone powder and appropriate amount to manufacture crushed sand to prevent deterioration of specific gravity and increase of absorption rate due to soil crushing. It is possible to provide a method and apparatus for producing aggregates that can produce high quality crushed sand above the KS regulations due to easy physical property control.

Fifth, to provide an aggregate manufacturing method and apparatus that can prevent the wear loss of the device elements, such as pumps, pipes and cyclones to extend the life.

1 is a schematic diagram showing a structure for manufacturing a conventional coarse aggregate and a crushed sand, Figure 2 is a schematic diagram showing the overall structure of the apparatus for manufacturing a coarse aggregate and a crushed sand according to the present invention,

Figure 3 is a schematic diagram showing the structure of log classifier classifier for removing the fine particles of soil and stone powder employed in the aggregate manufacturing apparatus according to the present invention,

Figure 4 is a schematic diagram showing a classifier structure for separating the crushed sand and sludge in the aggregate manufacturing apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

1 ... Hopper 2 ... Grizzly

1st compression crusher 4 ... vibration screen

5 ... 2nd Hopper 6 ... Vibration Feeder (vibration feeder)

7 ... 2nd Compression Crusher 8 ... 1st Dry Vibration Screen

9 ... 3 Compression Shredder 10 ... 3 Hopper

11 ... Hopper 4 12 ... Hopper 5

16 First Crusher 17 First Wet Vibration Screen

18 ... Log Crushfire 19 ... 2nd Crusher

20 2nd Wet Vibration Screen 21 ... High Mesh Clash

22 Hydro Cyclone 23.

25 Coagulant injection unit 28 ... Filter press

Aggregate manufacturing method of the present invention for achieving the above object comprises the steps of: a) classifying and storing separately from the raw rock mined in quarries as rock and soil; and

b) separating the coarse rock by classifying again from the classified soil powder; and

c) crushing the rock and storing it together with the coarse rock; and

d) crushing together the primary crushed rock stored in step c) and the coarse rock classified in the soil and classify in three granularity; and

e) classifying the three particle sizes classified as the coarse particles in step d) by re-crushing and classifying them again, and classifying and storing one and two particle sizes; and

f) segregation and shaving and grinding of the two particle sizes classified in step e); and

g) classifying into four granules while sprinkling the crushed and polished rock in step f); and

h) reclassifying the 4th particle size, which is the coarse particle size classified in step g), and classifying the classified particle size into coarse aggregate; and

I) transferring the two particle sizes classified in step g) to a wet vibrating screen having a watering device together with the finely divided clay powder in step b); and

j) classifying into fine particles and fine particles to remove segregation from the crushed rock classified in step b) and crushed rock of one particle size stored in step e); and

k) classifying the granularity classified in step g) and the particle size filtered by the wet vibration screen and the fine sand and sludge from the fine particles.

Aggregate production device according to the present invention to achieve the above object, the first hopper is a raw stone mixed with rock and earth powder;

A grizzurifida separating the rock from the raw stone supplied from the first hopper into rock and soil;

A vibrating screen for dividing soil, which separates the first and second granules from the soil which has passed through the grease fender;

A third hopper for storing clay powder having a first particle size passed through the vibration screen for soil separation;

A first compression crusher for crushing the rock remaining in the grease rifida;

A second hopper for storing the rock crushed from the first compression crusher and the rock of the second granularity remaining in the vibration screen for soil separation;

A second compression crusher for crushing the rock having passed through the second hopper and the rock having a second particle size;

A first dry vibration screen for filtering the rock crushed by the second compression crusher to a size of a first granularity, a second granularity, and a third granularity;

A third compression crusher for re-crushing the rock of the third particle size remaining on the upper end of the first dry vibration screen and resupplying it to the upper end of the first dry vibration screen;

A fifth hopper storing stone powder having a first particle size passed through the first dry vibration screen;

A fourth hopper for storing rocks of a second granularity through the first dry vibration screen;

A first crushing polisher for shaving the raw material rock supplied from the fourth hopper by the impact and friction between the rocks using centrifugal force and gravity;

In the first crushing polisher, the crushed and polished rock is separated from the first particle size to the fourth particle size, the stone classified to the third particle size is classified into coarse aggregate, and the classified particle is sent to the second wet vibrating screen to crush. A first wet vibration screen for spraying water on the upper portion classified with sand;

A log crusher for classifying the fine powder and earth powder supplied from the third and fifth hoppers into fine particles and granules in water;

A second crushing polisher for crushing and grinding the raw rock of the classified granulator;

A second wet vibration screen for filtering the raw material rock that has passed through the second crushing light and the second raw material rock of the second particle size filtered by the first wet vibration screen to a predetermined granularity, and water is sprayed on the upper part;

A high-mesh crassier classifying into a crushed sand product and sludge by mixing together the water that has passed through the second wet vibration screen and the turbid water separated into the fine particles in the log crustifier and transported through the first wet vibration screen. Wow;

Hydrocyclone that classifies the sludge fractionated from the high mesh crusher into residual sludge and fine sludge;

A thickener which aggregates and precipitates the turbid water of the finely divided sludge classified in the hard cyclone;

Coagulant administration unit for automatically adjusting the liquid coagulant to the Seeker;

A reservoir for storing the sludge agglomerated in the thinner;

It characterized in that it comprises a; filter press for dewatering the stored sludge cake.

The aggregate manufacturing apparatus is further provided with a vibration feeder and a conveyor for supplying the ground powder stored in the third hopper to the log clash.

In addition, the second wet vibration screen is provided with a rubber plate at an intermediate end, and consists of two stages each having a screen mounted on the upper and lower parts of the rubber plate,

The crushed rock supplied from the first wet vibrating screen and the second crushing polisher is divided into upper and lower ends, thereby doubling the throughput.

The log crustifier is provided with a ground powder or stone powder supplied from the third hopper or the fifth hopper and rotatably provided with a plurality of logs and communicating with the second crushing polisher, and the ground powder and stone powder are water. The soil and sludge of less than 100 mesh (0.15mm) attached to the coarse particles by friction with each other in the water by the log are separated, and the separated sludge is supplied as a high mesh crusher in turbid water.

The high mesh crusher is sand flowing through the first wet vibration screen and the second wet vibration screen (water containing sand and sludge) and turbid water containing fine particles classified in the log crush It is equipped with a slurry tank containing a screw for moving the one direction, and a dehydrator for dewatering the dry sand crushed with a bucket wheel for picking up the sand moved by the screw.

Hydrocyclone for classifying from the sludge classified from the high mesh crusher to residual sludge sand and fine sludge; The turbidity tank which stores the slurry turbidity of the fine powder classified from the high mesh crusher, and pumps the slurry turbidity with a pump, classifies it as fine-fine sand and sludge using vortex by the drag of water using centrifugal force and gravity, The hydrocyclone main body to be supplied to the dehydrator, and the intermediate sludge tank is separated from the hydrocyclone body is partially recovered to the turbidity tank through the intermediate adjustment tank and the upper sludge is supplied to the thinner.

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

Aggregate manufacturing method according to the present invention comprises the steps of: a) classifying the rock and soil into grizzly (grizzly) from the raw rock mined in the quarries and separately stored; and

b) separating the coarse rock by classifying again from the classified soil powder; and

c) crushing the rock and storing it together with the coarse rock; and

d) crushing together the primary crushed rock stored in step c) and the coarse rock classified in the soil and classify in three granularity; and

e) classifying the three particle sizes classified as the coarse particles in step d) by re-crushing and classifying them again, and classifying and storing one and two particle sizes; and

f) segregation and shaving and grinding of the two particle sizes classified in step e); and

g) classifying into four granules while sprinkling the crushed and polished rock in step f); and

h) reclassifying the 4th particle size, which is the coarse particle size classified in step g), and classifying the classified particle size into coarse aggregate; and

I) transferring the two particle sizes classified in step g) to a wet vibrating screen having a watering device together with the finely divided clay powder in step b); and

j) classifying into fine particles and fine particles to remove segregation from the crushed rock classified in step b) and crushed rock of one particle size stored in step e); and

k) classifying the granularity classified in step g) and the particle size filtered by the wet vibration screen and the fine sand and sludge from the fine particles.

Figure 2 is a schematic diagram showing the overall structure of the apparatus for manufacturing the building aggregate and the crushed sand (fine aggregate) according to the present invention suitable for realizing the aggregate production method.

First, the aggregate manufacturing apparatus having such a systematic scheme uses a combination of dry and wet treatment methods to increase the crushing, grinding and classification efficiency, and to prevent the incorporation and removal of impurities, streamlining the production process, and increasing production. It is an environmentally friendly device by coagulation / precipitation of sludge in turbid water, filtration / dehydration, and quenching.

Aggregate manufacturing apparatus for manufacturing coarse aggregate and crushed sand (fine aggregate) according to the present invention is configured as follows.

A first hopper (1) into which the mixed rock and soil powder is introduced, a grizzly feeder (2) separating the rock and soil from the raw stone supplied from the first hopper (1), A soil separation vibrating screen (4) for separating the first particle size and the second particle size from the soil powder that has passed through the Liz Fida (2), and the soil particles having the first particle size passing through the vibration screen (4) A third hopper 10, a first compression crusher 3 for crushing the rock remaining in the grease rivet 2, a rock crushed from the first compression crusher 3, and the soil separation A second hopper 5 for storing the rock of the second particle size passed through the vibrating screen 4, a rock passing through the second hopper 5, and a second compression crusher for crushing the rock of the second particle size. (7), a first dry vibration screen (8) for filtering the rock crushed by the second compression crusher (7) to a size of three particles, and the first dry vibration screen (8). A third compression crusher (9) for re-crushing the rock of the third particle size remaining in the upper end of the first dry vibration screen (8) and through the first dry vibration screen (8) A fifth hopper 12 for storing a first granular stone powder, a fourth hopper 11 for storing a second granular rock through the first dry vibration screen 8, and the fourth hopper 11 The first crushing polisher 16 which shaves the raw material rock supplied from the rock by the impact friction between the rocks using centrifugal force and gravity, and the crushed and polished rock in the first crushing polisher 16 The first wet vibration screen (17), the third hopper (10) and the fifth hopper (separated into four granules and classified and output the rock classified into the third granularity as a coarse aggregate product, and water is sprayed on the top) 12) Log powder for classifying the stone powder and soil powder supplied from 12) into the fine particles and granules in the water supplied through the spray nozzle 40. A fire 18, a second crushing polisher 19 which grinds and grinds the raw rock of the classified coarse grain, and a raw crushed stone passed through the second crushing polisher 19 and the first rock A second wet vibration screen 20 through which the raw material rock of the second particle size filtered from the wet vibration screen 17 is filtered to a certain granularity and water is sprayed through the injection nozzle 30 on the upper part, and the second wet vibration screen ( 20) and a high mesh classifying turbid water and sludge by mixing together the turbid water separated and separated into fine particles in the log clash (18) and conveyed through the first wet vibration screen (17). High Cycl Classifier (21), Hydrocyclone (22) for classifying the sludge classified from the High Mesh Classifier (21) into residual sludge and fine sludge, and this cyclocylon (22). Flocculation / sedimentation of turbid water from fine sludge A thickener 23 to make, a flocculant dispensing part 25 for automatically adjusting the liquid coagulant into the thinner 23, a reservoir 26 for storing the sludge agglomerated in the thinner 23, and And a filter press 28 for dewatering and cake-forming the sludge stored in the reservoir 26.

Reference numerals 13, 14 and 15 denote vibration sieves for supplying the ground, stone powder or raw material rocks stored in the respective hoppers 10, 11 and 12 to the log crashfire 18 or the first crushing polisher 16. And conveyor.

The first to the third particle size of the first vibration screen 8 can be adjusted in size as needed, in the present embodiment the first particle size of 8mm to 10mm or less, the second particle size of 25mm to 30mm or less 8mm to 10mm The third particle size is a rock having a diameter of 25 mm to 30 mm or more. Therefore, if necessary, the scale of the screen for dry production of the size that can pass each of these rocks of the grain size is provided.

In addition, the third particle size of the first wet vibration screen 17 has a rock size having a diameter of less than 25mm 5mm ~ 8mm, and is produced as a coarse aggregate product.

Particularly, rocks with high segregation are classified into log clash fires 18, and only the granulator is put into the second crushing polisher 19, so that the fine powder is prevented from degrading crushing efficiency due to the sponge effect in the centrifugal force impact crushing grinding, and crushing throughput To increase.

The second wet vibration screen 20 is provided with a rubber plate 20a at an intermediate end, and is composed of two stages with screens mounted on upper and lower portions of the rubber plate 20a, and thus, the first wet vibration screen 17 ) And the crushed rock supplied from the second crusher 19 is divided into the upper and lower ends to serve as a screen 2 bands. The rock passed through the second wet vibration screen 20 has a particle size of 4.75 mm or less.

Referring to FIGS. 2 and 3, in the log crustifier 18, soil or stone powder supplied from the third hopper 10 or the fifth hopper 12 is introduced and the plurality of logs 172 are rotatable. 100 mesh (0.15mm) provided in the main storage tank 171 and in communication with the second crushing mineralizer 19, the soil powder and stone powder is rubbed in water by water and the log 172 and attached to the coarse particles The soil and sludge below) are separated and the separated sludge is supplied to the high mesh crushfire 21.

Referring to FIGS. 2 and 4, the high mesh flashfire 21 includes a slurry (water containing sand and sludge) passing through the first wet vibration screen 17 and the second wet vibration screen 20. Slurry tank 201 in which turbid water containing the fine particles classified in the log crustifier 18 is introduced and a screw 202 is installed to move the introduced sand in one direction, and the sand transferred to the screw 202 is transferred. It is provided with a dehydrator 204 for picking up and dehydrating the bucket wheel 203.

Hydrocyclone (22) for classifying the sludge classified from the high mesh crustifier (21) into residual sludge and fine sludge is a turbidity tank in which the finely divided slurry turbidity water classified from the high mesh crustifier (21) is stored. 211 and the slurry turbid water is pumped by a pump 212 to classify fine grains and sludge using vortices by the drag of water using centrifugal force and gravity, and the separated fine grains are supplied to the dehydrator 204. And the sludge turbid water separated from the hydrocyclone main body 213 and the sludge precipitated is recovered to the turbidity tank 211 and the upper sludge is supplied to the thickener 23. 214 is provided.

In the above, in the classifier of the high-mesh classifier (21) 21, the assembler is lifted up with a bucket wheel (203) and supplied to the dehydrator 204, and the turbid water containing fine particles is hydrocyclone (Hidro). -cyclone; 22) classified into less than + 0.075mm (+ 200mesh) and -0.075mm (-200mesh), and + 0.075mm (+ 200mesh) is transferred to the dehydrator 204 and mixed with coarse sand as fine sand residue. After controlling the particle size, -0.075mm (-200mesh) fine sludge is transferred to the thickener 23 in turbid water, and coagulated and precipitated by the automatic feeder 25 of the liquid polymer coagulant.

In the present invention, the aggregate manufacturing apparatus as described above is the raw stone mined from the quarries soil and part that passed through the grizzurifida (2) in the course of passing the raw stone mixed with rock and soil powder 1 The rock is classified into the required particle size by the vibrating screen (4) for soil separation, and the rock is stored in the second hopper (5), and the soil passed through the screen is recovered and stored separately in the third hopper (10), and grizzly bends. (2) The remaining rock passed above is crushed by the first compression crusher (3).

The soil powder and rock that passed through the grease rifida (2) were filtered with a dry soil separation screen (4) having a scale of about 13 mm, and the soil powder that passed through the screen was separately stored in the third hopper 10 and then crushed sand. The rock remaining in the screen 4 is stored together with the rock crushed by the first compression crusher 3 in the second hopper 5 and used as raw aggregate material.

The first dry vibrating screen (8) for crushing the raw material rock stored in the second hopper (5) via a vibrating feeder (vibration feeder) 6 and a belt conveyor with a second compression crusher (7) and then sorting it in two stages. Supply it. The coarse rock remaining at the upper end of the first dry vibrating screen 8 is reinserted into the third compression crusher 9 and crushed again into the first dry vibrating screen 8, passed through the upper end, and Remaining crushed rock is stored in the fourth hopper 11, the crushed stone powder passing through the lower end is stored in the fifth hopper (12). The above process is a dry production step.

On the other hand, the rock introduced into the first crushing polisher 16 by the vibration feeder 13 and the belt conveyor in the fourth hopper 11 is crushed and polished, and the crushed and polished rock in the first crushed polisher 16 It is put into the first wet vibration screen 17 having the watering device 17a. The first wet vibration screen 17 is equipped with a three-stage screen, and the particles remaining at the upper end are re-injected into the first crushing maze 16, broken and ground, passed through the upper end and the third particle size remaining at the middle point. Is output as a coarse aggregate product. In addition, the crushed rock of the second incidence that passes through the suspension and remains at the bottom is transferred to the second wet vibration screen 20 to be filtered to a particle size of 4.75 mm or less together with the crushed and polished soil and stone powder. The first particle size less than or equal to -4.75 mm passed through is transferred to the high mesh crashfire 21.

The slurry passing through the lower end of the second wet vibration screen 20 is transferred to the high mesh crass fire 21 and is classified and dehydrated and output as a crushed sand product.

In the high-mesh classifier (21), the assembler is lifted up with a bucket wheel (203) and supplied to the dehydrator 204, and the turbid water containing fine particles is hydro-cyclone (22). + 0.075mm (+ 200mesh) and -0.075mm (-200mesh) are classified into less than + 0.075mm (+ 200mesh) is transferred to the dehydrator 204 and mixed in coarse sand to adjust the particle size to the crushed sand residues, The fine sludge of -0.075mm (-200mesh) is transferred to a thickener (23) in turbidity and is precipitated and precipitated by the automatic feeder (25) of the liquid polymer coagulant. The coagulated sedimented sludge is collected by the scraper 24 and transported / stored in the sludge storage tank 26. The stored sludge is circulated by the pump 27 to prevent the sludge from solidifying in the reservoir 26, pumping the required amount into the filter press 28, and filtering and dewatering the sludge into a cake.

On the other hand, the fine particles classified in turbid water is classified into sand and sludge which is transferred to the hydrocyclone 22, thereby increasing the classification efficiency and efficiently removing the sludge. At this time, the coarse particles are physically dried by the bucket wheel 203, and the fine particles and turbidity are hydrocyclones (22) to classify the sand and sludge of the fine particles. ) Is combined with coarse sand and the sludge is precipitated by the thinner 23 and stored in the sludge storage tank 26.

In order to increase the sludge storage capacity, the scraper 24 of the thinner 23 automatically moves up and down about 50 cm according to the amount of sludge settled to prevent it from hardening and to serve as a storage tank.

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

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

First, to increase the productivity by producing coarse aggregate and crushed sand in a consistent process, and to improve the quality by installing the intermediate storage hopper (10, 11, 12) by the type of raw material (soil, stone powder, crushed rock). In addition, by installing a three-stage intermediate storage hopper can be divided into three stages to increase the operation rate. That is, when the machine between any one of the storage hoppers (1, 5, 10, 11, 12) is broken, the process before and after the hopper can be operated normally to improve the machine operation rate and productivity.

Second, the reduction of production capacity by reducing the overlapping device of the machine can reduce the production cost of aggregate and lower the production cost of the plant according to the raw aggregate production unit.

Third, waste resources can be used as a useful resource by separating and storing soil powder through the Grizzly bridder 2 and the soil separation screen 4 in the first hopper 1. In addition, when crushing rock together with soil, the crushing efficiency is reduced and clay is prevented from being adhered to the rock by the compression crusher (3). It is effective to prevent the mixing of clay and organic matter, and improve the quality of aggregate.

Fourth, in order to remove segregation and kerbstones in the final process of manufacturing coarse aggregate (25mm), stone and stone are crushed by the first crushing polisher 16 to shave the hair to the same degree as natural aggregate. Raise the particles, which are generated at this time, are filtered through the first wet vibration screen 17 and sent to the high mesh classifier 21 and the second wet vibration screen 20, and have a circularly worn particle size (+5 mm or +8 mm). ~ -25mm) is shipped as a coarse aggregate product, so that the product is smooth and finely cleaned aggregate. Therefore, it is economical to increase concrete strength and reduce cement content by 30% by increasing workability and density and adhesion of concrete. It works.

Fifth, in the manufacture of crushed sand, if the soil contains a lot of sediment and raw clay, the specific gravity is lower than 2.5 of the KS regulation and the absorption rate is increased. The powder raw material through) and the ground raw material through the third hopper 10 are added together to the log crustifier 18 at an appropriate ratio and rubbed with logs in water to separate clay and fine powder. At this time, the turbid water is transferred to the high mesh crusher 21 and classified, and the granulators are crushed and polished by the second crushing polisher 19, and the first classification is performed before crushing and grinding to remove fine powder and clay, etc. Increasing the efficiency of light and polishing, it is effective to remove segregation and increase throughput.

Sixth, the high mesh crusher 21 is a classifier made by combining the bucket wheel 203, the vibrating dehydrator 204 and the hydrocyclone 22, and scraping the crushed sand with a screw 202 to scrape the bucket wheel In (203), the fine sand of 150 or more meshes of coarse granules are transferred from the slurry tank 201 to the vibrating dehydrator 204 to be dehydrated and pretreated, and the fines that have passed the slurry tank 201 in the remaining turbidity state are the turbidity tank 211. And pumped by the pump 212 and classified into the hydro-cyclone body 213, the granulator of 200 mesh or more is sent to the dehydrator and combined with the granulator sand to adjust the dewatering particle size and the sludge of 200 mesh or less (0.075mm) By coagulation sedimentation treatment to the sedimentation tank), the machine and equipment such as pump impeller, housing, pipe, hydrocyclone are consumed less and the classification efficiency is high.

Seventh, in the water treatment, the scraper 24 of the thinner (sedimentation tank) 23 is automatically moved up and down by about 50 cm to allow the sludge storage tank to be full and serve as a sludge auxiliary storage tank, and the sludge of the sludge storage tank 26 is In order to prevent the solidification is circulated to the pump 27 has an effect of preventing the solidification in the storage tank.

Eighth, it is easy to dissolve the drug even in winter by using a liquid polymer coagulant without using a powder as a flocculant, there is an advantage that the operation is convenient because the drug is automatically injected in a quantitative manner.

Claims (6)

a) classifying into rock and soil from raw rock mined in quarries and storing them separately; and b) separating the coarse rock by classifying again from the classified soil powder; and c) crushing the rock and storing it together with the coarse rock; and d) crushing together the primary crushed rock stored in step c) and the coarse rock classified in the soil and classify in three granularity; and e) classifying the three particle sizes classified as the coarse particles in step d) by re-crushing and classifying them again, and classifying and storing one and two particle sizes; and f) segregation and shaving and grinding of the two particle sizes classified in step e); and g) classifying into four granules while sprinkling the crushed and polished rock in step f); and h) reclassifying the 4th particle size, which is the coarse particle size classified in step g), and classifying the classified particle size into coarse aggregate products; and I) transferring the two particle sizes classified in step g) to a second wet vibration screen; and j) classifying into fine particles and granules to remove segregation from the finely divided clay powder classified in step b) and the crushed stone powder of granularity stored in step e); and k) classifying the granularity classified in step g) and the particle size filtered in the wet vibration screen and classifying the fine sand into sludge and sludge. First hopper (1) to which the raw stone mixed with rock and earth powder is introduced; And A grizzurifida (2) for separating rock and soil from the raw stone supplied from the first hopper (1); A dust separation vibrating screen (4) for separating the soil powder passing through the grease fender (2) into two particle sizes; A third hopper (10) for storing the clay powder having a first particle size passed through the vibration separating screen (4); A first compression crusher (3) for crushing the rock remaining in the grease rifida (2); A second hopper (5) for storing rock crushed from the first compression crusher (3) and soil powder having a second particle size remaining in the soil separation screen (4); A second compression crusher 7 for crushing the rock having passed through the second hopper 5 and the rock having the second particle size; A first dry vibration screen (8) for filtering the rock crushed by the second compression crusher into three particle sizes; A third compression crusher 9 for crushing the rock of the third particle size remaining on the upper end of the first dry vibration screen 8 and resupplying it to the upper end of the first dry vibration screen 8; A fifth hopper 12 storing stone powder having a first particle size passed through the first dry vibration screen 8; A fourth hopper 11 for storing rocks of a second granularity through the first dry vibration screen 8; A first crushing polisher 16 which shaves raw material rock supplied from the fourth hopper 11 by mutual impact of rocks using centrifugal force and gravity; The crushed and polished rock is separated into four sizes of granules in the first crushing polisher 16, and the rock classified into the third granules is output as a coarse aggregate product, and the first and second grain sizes are classified as raw sand raw materials. And the first wet vibration screen 17 is sprayed with water on the top; A log crusher 18 for classifying the stone powder and the soil powder supplied from the third hopper 10 and the fifth hopper 12 into fine particles and granules in water; A second crushing mineralizer 19 for crushing and grinding the raw rock of the classified coarse grain; A second wet vibration screen for filtering the raw material rock that has passed through the second crushing light 19 and the raw material rock having a second particle size filtered by the first wet vibration screen 17 to a predetermined granularity, 20); The product passed through the second wet vibration screen 20 and the turbid water separated and mixed into the fine particles in the log crashfire 18 and transferred through the first wet vibration screen 17 are mixed together and crushed sand products. A high mesh classifier 21 classifying into sludge; A hydrocyclone (22) for classifying the sludge fractionated from the high mesh crustifier (21) into residual sludge and fine sludge; A thickener 23 for agglomerating and sedimenting the turbid water of the finely divided sludge classified in the hard cyclone 22; A flocculant dispensing part 25 for automatically adjusting the liquid coagulant into the seekner 23; A reservoir (26) for storing the sludge agglomerated in the thinner (23); Aggregate manufacturing apparatus comprising a; filter press 28 to dehydrate the stored sludge cake. The method of claim 2, wherein the second wet vibration screen 20 is provided with a rubber plate 20a at an intermediate end, and is composed of two stages with screens mounted on upper and lower portions of the rubber plate, respectively. Aggregate manufacturing apparatus, characterized in that the crushed rock supplied from the first wet vibration screen (17) and the second crushing grinding machine (19) is divided into the upper and lower ends. The method according to claim 2 or 3, wherein the log crustifier 18 is a main reservoir 171 to which the soil or stone powder supplied from the third hopper 10 or the fifth hopper 12 is introduced, A plurality of logs 172 accommodated in the main storage tank 171 and provided to be rotatable with each other; Injecting nozzle 40 for supplying water to the main reservoir 171, The soil powder and the stone powder is rubbed in water by the water and the log (172), the aggregates and the sludge of less than 100 mesh (0.15mm) attached to the coarse particles, characterized in that the aggregate is separated. The method of claim 2, wherein the high mesh crusher 21 is a slurry (water containing sand and sludge) and the log crash through the first wet vibration screen 17 and the second wet vibration screen 20 Slurry tank 201 in which turbid water containing fine particles classified in the fire 18 flows in, and includes a screw 202 and a bucket wheel 203 for moving the introduced sand in one direction; Aggregate manufacturing apparatus characterized in that it comprises a dehydrator (204) for dehydrating with sand by passing the coarse to the bucket wheel (203). 3. The hydrocyclone (2) according to claim 2, further comprising: hydrocyclone (22) for classifying the sludge classified from the high mesh crustifier (21) into residual sludge and fine sludge; The turbidity tank 211 which stores the slurry turbid water of the fine powder classified from the high mesh crusher 21, and The slurry turbid water is pumped by a pump 212 to classify fine grains and sludge using vortices with the drag of water using centrifugal force and gravity, and the separated fine grains are supplied to the hydrocyclone body 213 to the dehydrator 204; The sludge turbid water separated from the hydrocyclone body 213 is stored, and the precipitated sludge is recovered to the turbid water tank 211 and the upper sludge includes an intermediate adjusting tank 214 which is supplied to the thinner 23. Aggregate manufacturing apparatus characterized in that.