KR100487089B1 - The sorting system and the method of construction waste - Google Patents

Abstract

The present invention relates to a construction waste sorting system and a method thereof, and more particularly, when the first and second crushed stones of small and medium particles pass through the sorting section, the large particles of stone are re-crushed by a crusher to re-select to the sorting section. Each stone that is passed through the sorting unit is separated and transferred to a conveying conveyor where water and soil discharge chute are formed through a conveyor tank to maximize the sorting precision of the stone at the minimum volume ratio, thereby increasing the recycling of waste. Construction waste sorting system and method thereof.

According to the present invention, there is provided a construction waste sorting system and a method for sorting through a first sorting step, a first to second shredding step, a second sorting step, a third sorting step, a third shredding step, a water treatment step, and a reducing step. do.

Description

The sorting system and the method of construction waste

The present invention relates to a construction waste sorting system and a method thereof, and more particularly, when the first and second crushed stones of small and medium particles pass through the sorting section, the large particles of stone are re-crushed by a crusher to re-select to the sorting section. Each stone that is passed through the sorting unit is separated and transferred to a conveying conveyor where water and soil discharge chute are formed through a conveyor tank to maximize the sorting precision of the stone at the minimum volume ratio, thereby increasing the recycling of waste. Construction waste sorting system and method thereof.

In general, the construction waste sorting device is for recycling wastes generated from reconstruction of various building structures. The wastes are sorted by soil, gravel, etc. according to their use or size, and rebar, vinyl, styrofoam, etc. mixed in the waste Foreign matters are separated and removed.

Conventional construction waste sorting system as described above is composed by connecting a jaw crusher (Caw Crusher), a cone crusher (Cone Crusher), a screen, a collection tank with a transfer conveyor, first the raw material is put into the jaw crusher and crushed first In this case, the first crushed stone is put into the crusher and then secondly crushed. The crushed stone is put into a screen formed of a porous network through a transport conveyor, separated and sorted according to the size of the particles, and subjected to a water treatment process. At this time, the soil adsorbed to each stone through the water collecting tank is washed and separated. Foreign matter mixed in the stone will be removed.

The stone is subjected to the second crushing step, but the degree of crushing efficiency is low, thereby reducing the sorting precision. That is, the stone and gravel put into the sump is not completely separated from the sediment because the sediment cannot be sorted in the sump, and the sedimentation precision is reduced because water and the soil are mixed in the stone even when transported through the conveying conveyor. The main cause of In addition, the stone and gravel put into the sump contains a large amount of foreign matter, but by removing it manually, it was impossible to completely remove the foreign matter, which acted as a cause of reducing the sorting precision.

Therefore, in order to solve the above-mentioned problems, there is a desire to increase the sorting accuracy by using gravity separation means or sand mill and to reduce the scattering generated during the crushing (Utility Model Registration No. 302005), which has a high volume ratio and a process. In addition to this complexity, various problems such as reduction in crushing efficiency due to grinding using a sand mill have been generated.

An object of the present invention is to solve such a problem in the prior art, the first and second jaw crusher, the cone crusher, the first and second screen formed of the porous network, the foreign matter blocking guide and the sewage separator is formed, The discharge hole is formed on the surface and the guide conveyor is formed on the lower side to combine the first and second sorting steps, the first and second shredding steps, the second sorting step, the third sorting step, the third shredding step, and the water treatment step. The purpose of the present invention is to provide a construction waste sorting system and a method for maximizing the precision of waste sorting to increase recycling efficiency and minimizing the volume ratio of the entire system.

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

1 is a schematic view showing the overall flow of the present invention, Figure 2 is a state diagram showing the entire system of the present invention, Figures 3a to 3c is a perspective view and a cross-sectional view showing a water treatment unit of the present invention,

The first jaw crusher 20 in which the jaw 21 is formed at the bottom of one side of the raw stone injection hopper 10, the cone crusher 30 formed of the cone mantle head 31 and the cone cave ball 32, First and second screens 40 and 40 'formed of porous meshes 41 and 41' of size, stone inlet conveyors 4 and 4 'and stone outlet conveyors 5 and 5' are formed. In the conventional construction waste sorting system formed of a combination of a water collecting tank 50, a foreign matter sorter 60 having a blower 61, and a conveying conveyor, a plurality of sorting tables are provided on the bottom of the raw material input hopper 10. Primary screening unit 100 is formed with a predetermined interval (11); and the first screen 40 to the side of the raw stone input hopper 10 of the primary screening unit 100 through the transfer conveyor (3-1) And a secondary sorting unit 200 having a conveying conveyor 3-2 on one side of the first screen 40 and a soil discharge conveyor 3-3 on the lower side thereof, and a conveying conveyor. (3 First and second jaw crushers 20 and 20 'to which the first and second jaw crushers 20 and 20' are connected to the other side of the raw stone injection hopper 10 of the primary sorting unit 100 through -4) (3-5) ( And a transfer conveyor 3-5 of the first and second crushing units 300 and a transfer conveyor 3-2 of the secondary sorting unit 200 are connected to one side of the second screen 40 ′. The tertiary sorting unit 400 is provided with the earth and sand discharge conveyor 3'-3 and the inlet conveyor 4 on the lower side of the second screen 40 ', and the inlet conveyor 4' on the one side. And the crusher 30 is connected to one side of the tertiary sorting unit 400 through the transport conveyor (3-6) connected to the tertiary sorting unit 400, and to one side of the crusher 30 A tertiary crushing unit 500 to which the conveying conveyors 3-7 are connected; The lower and one side of the tertiary sorting unit 400 is connected to the collecting tank 50 at one side of the inlet conveyor 50, and the transfer tank 82 is provided with a wiper 81 inside the collecting tank 50. A sediment sorter 80 for sorting out soil is mounted, and a water treatment unit equipped with a debris sorter 60 composed of a debris blocking guide 62, a blower 61, and a debris discharge conveyor 63 on the upper side thereof ( And a stone outflow conveyor (5) (5 ') on one side of the water treatment unit (600), but a plurality of soil and water discharge holes (7) are provided on the surface of the outflow conveyor (5) (5'). It is formed, it is characterized in that it is formed by a combination of the stone outlet portion 700 is formed in the soil and water guide chute (6).

The first crushing step of crushing the raw stone waste to the jaw crusher 20; and the second crushing step of crushing the first crushed stone into the cone crusher 30; and the second crushed stone screen 40 In the conventional waste sorting method of sorting through the sorting step of sorting and separating; and transporting each of the sorted crushed matter to the water tank 50 to separate the foreign matter and earth and sand; The first sorting step (S1) is added to (10) and sorted by large particles of raw stones and medium and small particles of stone and earth and sand; and the first crushing step of crushing the gemstones with the first jaw crusher 20 (S2). 2) a second crushing step (S2 ') of re-crushing the crushed matter with a second jaw crusher (20'); and the porous and the porous object (3-1) through the transfer conveyor (3-1) 41 is formed to be transferred to the first screen 40, the earth and sand through the porous network 41, the earth and sand discharge cone Discharge through the Bayer (3-3), the secondary and the small-sized stone is transferred to the conveying conveyor (3-2) to separate and sort the stone and soil according to the diameter of the secondary sorting step (S1 '); and the secondary sorting In the step S1 ′, the stones of the medium and small particles selected in the step S2 ′ and the stones of the medium and small particles crushed in the secondary crushing step S2 ′ are transferred to the second screen (3-2) (3-5). 40 ') and the soil mixed in each stone is discharged through the earth and sand discharge conveyor (3'-3), the small particles of stone and gravel are transferred to the stone inlet conveyor (4) (4'), heavy particles Stone is transferred to the conveying conveyor (3-6) and the third sorting step (S1 ") to separate and sort according to the diameter; and the porous network 41 'of the second screen 40' of the third sorted stone 3) which puts the stone of the heavy particles that did not pass through into the crusher 30 through the conveying conveyor 3-6 to be crushed and then re-injected into the second screen 40 'through the conveying conveyor 3-7. Difference crushing step S2 "; Water treatment step of separating each stone and soil and foreign matter through the sediment separator (80) and the foreign matter separator (60) by introducing each of the three selected stones into the water collecting tank (50) by the inflow conveyor (4) (4 '). And the water-treated stone is introduced into the outlet conveyor (5) (5 ') formed with the discharge hole (7) to reduce the small amount of soil and water mixed in the stone to the water collecting tank (50) through the guide chute (6); It is characterized in that the screening through step (S4). Before explaining the present invention, the jaw crusher 20, 20 ', the cone crusher 30, the screen 40, 40 (40) corresponding to the prior art. '), The function and structure of the sump 50 will be described in more detail, first the jaw crusher 20, 20' between the jaw 21, which is a steel plate on both sides. When the rock is put into the rock, when it is passed in, one of the two sides is fixed and the other moves. Cone crusher (Cone Crusher) (30) is a crushing machine using the impact force and compression force, the cone mantle head (31) shaped like an umbrella on the central axis of a short vertical shape By attaching, the eccentric motion of the cone cave ball (cone cave ball) (32) attached to the frame is the bite down and crushed down. The screens 40 and 40 'are used to sort stones and earth and sand by vibrating after forming one or two porous meshes having different meshes. The water collecting tank 50 is a foreign material mixed in the selected stones. Is suspended above the water, and the earth and sand are settled below the water. A blower is installed at the top side of the sump to induce the discharge of suspended solids. The bottom of the sump can discharge the earth and sand with a transfer conveyor with a wiper. Referring to the mounting state of the present sorting system formed by combining the prior art as described above, firstly, the secondary sorting unit 200 to one side of the primary sorting unit 100, the first and second crushing The unit 300 is connected and formed, and the tertiary sorting unit 400 is connected to the secondary sorting unit 200 and the primary and second crushing units 300. In addition, the tertiary sorting unit 400 is connected to the tertiary crushing unit 500 and the water treatment unit 600, the water treatment unit 600 is connected to the stone outlet 700. In more detail, as shown in FIG. 1, as shown in FIG. 1, a plurality of bars are formed on the bottom surface of the gemstone injection hopper 10 to form a sorting table 11 spaced at a predetermined interval to form a primary sorting unit 100. Then, the lower side is equipped with a conveying conveyor (3-1) is connected to the first screen 40, that is, the secondary sorting unit 200 formed of a multi-stage porous network 42 (42 '), wherein the 2 The multi-stage porous network 42, 42 ′ of the vehicle sorting unit 200 forms the network structure of the lower porous network 42 ′ more densely than the network structure of the upper porous network 42. Stone and soil filtered in (42) to be screened once more in the lower porous network (42 '). In addition, one side of the upper porous network 42 and the lower porous network 42 'of the first screen 40 is equipped with a transfer conveyor (3-2), the lower side of the lower porous network 42' Is equipped with a sediment discharge conveyor (3-3), and one side of the primary sorting unit (100) by biting a lump of rock, etc. between a steel plate and a fixed plate facing the steel plate vibrating little by little before and after, to crush and crush. The first jaw crusher 20 is mounted, and on one side of the first jaw crusher 20, a transfer conveyor 3-4 is mounted to attach a second jaw crusher 20 ′ identical to the first jaw crusher 20. It is connected to, one side of the second jaw crusher (20 ') is equipped with a conveying conveyor (3-5) to form a primary crushing unit 300, each of the conveying conveyor (3-1) (3-4) (3-5) is equipped with a conventional magnetic separator 90 to sort the metal material contained in the stone and earth and sand. The teeth mounted on the second jaw crusher (20 ') and the first screen (40). Song conveyor (3-5) (3-2) is connected to the second screen (40 ') which is the tertiary sorting unit 400, the second screen (40') as in the first screen 40 It is formed of a multi-stage porous network (43, 43 '), the lower porous network 43' is a first porous network 43'-1 and the first porous network ( And the second porous body 43'-2 that is less dense than 43'-1). The earth and sand discharge conveyor 3'-3 is mounted below the first porous network 43'-1 of the second screen 40 ', and the lower side and one side of the second porous network 43'-2. Inlet conveyor (4) (4 ') is mounted to the porous network 43 on one side of the conveying conveyor (3-6) is equipped with the crusher (30) and the third crushing unit 500 In this case, the cone crusher 30 is attached to the cone mantle head shaped like an umbrella on the central axis of the short vertical shape, the gemstone ball (cone cave ball) attached to the frame by the eccentric movement of the gemstone down It is a conventional structure for crushing while going down. Transfer conveyor for connecting the second jaw crusher (20 ') and the second screen (40') by connecting the transfer conveyor (3-7) to the lower side of the crusher (30). Reconnect to (3-5). The inlet conveyor (4) and (4 ') forms a water treatment unit (600) on one side, and the water treatment unit (600) has an outlet conveyor (5) (5'). It is formed with a water tank (50). As shown in FIGS. 3A to 3B, one side of the water collecting tank 50 is equipped with a foreign substance discharge conveyor 63, and the other side is equipped with a soil stacking box 83. In addition, the inside is equipped with a soil transfer conveyor 82 with a wiper 81 is formed, the foreign matter blocking guide 62 and the blower so that the foreign matter is not conveyed in the mixed state in the outflow conveyor (5) (5 '). Also, the discharge conveyors 5 and 5 'form a discharge hole 7 for discharging the soil and water to the surface, and discharge the soil to discharge through the discharge hole 7 below. After mounting the guide chute 6 for reducing the water to the sump (50), by forming the stone outlet 700 is completed the sorting system to be implemented in the present invention. And the primary sorting of the completed sorting system Gemstone injection hopper 10 of the portion 100, the secondary screening unit 200 and the third screening unit 400 of the first and second screens 40, 40 'and the primary crushing unit 300 Both sides of the first and second jaw crushers 20 and 20 'are equipped with a general vibration device for facilitating crushing and sorting of gemstones.

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Referring to the process of sorting construction waste through the above sorting system,

As shown in FIG. 1 or FIG. 2, first, in the first sorting step (S1), raw stone waste is introduced into a raw stone input hopper 10 which vibrates through a general vibrating device, and recycled stones of medium and small particles mixed in gemstones. And the sediment is separated through the sorting table 11, wherein the large grains that do not pass through the sorting table 11 is directly injected into the first jaw crusher 20, at this time the first jaw crusher 20 The small and medium stones and earth and sand are passed to the first screen 40 through the conveying conveyor (3-1) below the raw stone injection hopper 10 due to the vibration of the).

In the second crushing step (S2), the raw stone having a large particle size among the gemstones selected through the first sorting step (S1) is introduced into the first jaw crusher 20 to be crushed, and the crushed material is again subjected to the second jaw crusher. Re-crushed through the vibration of 20 'to reduce the particles of the ore, and then flows into the second screen (40).

In the secondary screening step S1 ′, the first screen 40 vibrates small and small particles of stone and earth and sand among the gemstones selected through the first screening step S1, wherein the first screen ( The porous network 41 of 40 is formed of upper and lower porous networks 42 and 42 'formed in multiple stages, and separated into three types according to the size of the particles. That is, the earth and sand passing through both the upper and lower porous nets 42 and 42 'of the first screen 40 is transferred through the earth and sand discharge conveyor 3-3, and passes through the upper porous net 42. The particles of the middle particles that do not pass and the stones of the small particles that do not pass through the lower porous network 42 'are combined into one and flow into the second screen 40' through the transfer conveyor 3-2.

In the tertiary sorting step (S1 ″), the earth and sand of the crushed materials passed through the secondary sorting step (S1 ′) are discharged to the outside through the earth and sand discharge conveyor (3-3) below the first screen (40), and the particles are small. Stone and the crushed material after the second crushing step (S2 ') is separated into the second screen (40') vibrating through the transfer conveyor (3-5), where the crushed material of the second screen (40 ') Particles that pass through the upper porous network 43 and the pass through are separated, and the passing particles pass through the lower porous network 43 'while passing through the lower porous network 43' and do not pass through the particles. In addition, the lower porous network 43 'passes through the earth and sand passing through the first porous network 43'-1 and the second porous network 43'-2 according to the particle size. The soil is passed through the upper porous net 43 and the first porous net 43'-1, combined with the soil discharge conveyor 3-3 of the first screen 40. The heavy particles of stone which are not discharged and do not pass through the upper porous net 43 are introduced into the crusher 30 through the transfer conveyor 3-6, and the upper porous net 43 and the second porous net Gravel passing through the sieve 43'-2 is introduced into the sump tank 50 through the inlet conveyor 4, and does not pass through the first and second porous nets 43'-1 and 43'-2. Failed small particles stone is introduced into the sump 50 through the inlet conveyor (4 ') of one side of the second screen (40').

In the tertiary crushing step (S2 ″), one side of the second screen 40 ′ of stones of heavy particles that do not pass through the upper porous network 43 of the second screen 40 ′ in the tertiary sorting step (S1 ″). Transfer to the crusher 30 through the conveying conveyor (3-6) mounted on the crushed into small particles to gravel, the crushed stone is the second jaw crusher (20 ') through the conveying conveyor (3-7) And transfer to the second screen 40 'by connecting to a transfer conveyor 3-5 mounted between the second screen 40' and the second screen 40 '.

In the water treatment step (S3), as shown in FIGS. 3A to 3B, each stone and gravel screened through the second screen 40 ′ is discharged to each inlet conveyor 4 and 4 below and below the second screen 40 ′. ') Flows into the sump (50), wherein the introduced stone is mixed with foreign materials such as vinyl, styrofoam, as well as earth and sand. Here, the soil has a high specific gravity and settles to the bottom of the water collecting tank 50. The precipitated soil is scraped by the wiper 81 of the conveying conveyor 82 mounted on the bottom of the water collecting tank 50, and then transferred to the soil stacking layer 83. do.

And the foreign matter having a low specific gravity becomes floating, first, to prevent the floating foreign matter is moved to the outflow conveyor (5) (5 ') side by the foreign matter blocking guide 62 mounted to one side of the sump tank, 2 Collecting floating foreign matter to one side through the blower 61 mounted on one side of the collecting tank (50). Finally, the suspended foreign matter collected in the third is discharged to the foreign matter discharge conveyor (63).

In the reduction step (S4) when the stone and gravel of the water-treated small particles through the water collecting tank 50 to the outflow conveyor (5) (5 ') a plurality of formed on the surface of the outflow conveyor (5) (5') The earth and water adsorbed or added to the stone and gravel through the discharge hole 7 are discharged to the guide chute 6 below the discharge conveyor 5, 5 ′. At this time, the guide chute 6 is formed to be inclined downward toward the water collecting tank 50 so that the discharged soil and water are reduced to the water collecting tank 50. That is, the primary sorting unit 100 is mixed in the raw stone waste, Stone and earth and sand of the small particles are screened, the first and second crushing unit 300 is to crush the stone selected in the first and second sorting unit 100, and the second sorting unit 200 is Among the stones selected by the primary sorting unit 100, the small particles and the soil is re-selected. In addition, the tertiary sorting unit 400 re-selects the crushed matter and the sorted material which passed through the primary and secondary crushing unit 300 and the secondary sorting unit 200, and the tertiary sorting unit 500. Re-crush the stone of the heavy particles that did not pass (400), the water treatment unit 600 is to screen the foreign matter mixed in the selected stone and gravel and vinyl, styrofoam and the like, in the stone outlet 700 The soil and water adsorbed on the stone are completely removed and discharged.

As described above, in the present invention, unlike the conventional sorting system, before the crushing of the raw stone waste, the stone and the soil of the medium and small particles mixed with the raw stone waste are first selected to increase the crushing efficiency, and the sediment screening through the collecting tank 50 is performed. City sorting efficiency was also increased. In addition, the waste that does not pass through the screen when screening through a conventional screen by crushing three times to increase the crushing efficiency and at the same time increases the sorting accuracy. In addition, the water treatment unit 600 is equipped with a transfer conveyor 82 is equipped with a wiper 81 for the sediment selection to reduce the waste of water resources, forming a foreign material blocking guide 62 on one side of the water collecting tank (50). The discharge hole 7 and the guide chute 6 were formed in the outflow conveyors 5 and 5 'to further increase the sorting accuracy of the rehabilitation waste.

As such, the present invention forms a primary sorting unit and a tertiary sorting unit in order to add a primary sorting step and a tertiary crushing step, and a conveyor type equipped with a wiper inside the sump to clearly sort out soil and foreign matter from waste. It forms a sediment sorter and a foreign material blocking guide, and the discharge conveyor forms a plurality of discharge holes on the surface and soil and water guide chutes on the lower side, which not only increases waste crushing efficiency but also significantly increases the sorting accuracy. Compared to the existing sorting system, the volume ratio is lower, which is effective.

1 is a schematic diagram schematically showing the overall flow of the present invention

Figure 2 is a state diagram showing the entire system of the present invention

3a to 3c is a perspective view and a cross-sectional view showing a water treatment unit of the present invention

Explanation of symbols for main parts of drawings>

3-1,2: Conveyor Conveyor 3-3,3'-3: Soil Discharge Conveyor

3-4 ~ 7: Conveyor Conveyor 4,4 ': Inlet Conveyor 5,5': Outlet Conveyor

6: guide suit 7: discharge hole 10: raw stone entrance

11: sorting table 20: first jaw crusher 20 ': second jaw crusher

21: Joe 30: Cone Crusher 31: Conmantle Head

32: Caveball 40: First Screen 40 ': Second Screen

41: porous network 50: sump tank 60: foreign matter sorter

61: Blower 62: Foreign material blocking guide 63: Foreign material discharge conveyor

80: sediment sorter 81: wiper 82: transfer conveyor

83: earth and sand loading box 100: 1st sorting part 200: 2nd sorting part

300: 1 to 2 crushing unit 400: 3rd sorting unit 500: 3rd crushing unit

600: water treatment unit 700: stone discharge unit S1: first screening step

S1 ': 2nd sorting step S1 ": 3rd sorting step S2: 1st shredding step

S2 ': 2nd shredding step S2 ": 3rd shredding step S3: Water treatment step

S4: reduction step

Claims (2)

The first jaw crusher 20 in which the jaw 21 is formed at the bottom of one side of the raw stone injection hopper 10, the cone crusher 30 formed of the cone mantle head 31 and the cone cave ball 32, First and second screens 40 and 40 'formed of porous meshes 41 and 41' of size, stone inlet conveyors 4 and 4 'and stone outlet conveyors 5 and 5' are formed. In the conventional construction waste sorting system formed of a combination of a water collecting tank 50, a foreign matter sorter 60 having a blower 61, and a conveying conveyor, a plurality of sorting tables are provided on the bottom of the raw material input hopper 10. Primary screening unit 100 is formed with a predetermined interval (11); and the first screen 40 to the side of the raw stone input hopper 10 of the primary screening unit 100 through the transfer conveyor (3-1) And a secondary sorting unit 200 having a conveying conveyor 3-2 on one side of the first screen 40 and a soil discharge conveyor 3-3 on the lower side thereof, and a conveying conveyor. (3 First and second jaw crushers 20 and 20 'to which the first and second jaw crushers 20 and 20' are connected to the other side of the raw stone injection hopper 10 of the primary sorting unit 100 through -4) (3-5) ( And a transfer conveyor 3-5 of the first and second crushing units 300 and a transfer conveyor 3-2 of the secondary sorting unit 200 are connected to one side of the second screen 40 ′. The tertiary sorting unit 400 is provided with the earth and sand discharge conveyor 3'-3 and the inlet conveyor 4 on the lower side of the second screen 40 ', and the inlet conveyor 4' on the one side. And the crusher 30 is connected to one side of the tertiary sorting unit 400 through the transport conveyor (3-6) connected to the tertiary sorting unit 400, and to one side of the crusher 30 A tertiary crushing unit 500 to which the conveying conveyors 3-7 are connected; The lower and one side of the tertiary sorting unit 400 is connected to the collecting tank 50 at one side of the inlet conveyor 50, and the transfer tank 82 is provided with a wiper 81 inside the collecting tank 50. A sediment sorter 80 for sorting out soil is mounted, and a water treatment unit equipped with a debris sorter 60 composed of a debris blocking guide 62, a blower 61, and a debris discharge conveyor 63 on the upper side thereof ( And a stone outflow conveyor (5) (5 ') on one side of the water treatment unit (600), but a plurality of soil and water discharge holes (7) are provided on the surface of the outflow conveyor (5) (5'). And a stone outflow part 700 formed with the earth and water guide chute 6 formed on the lower side thereof. The first crushing step of crushing the raw stone waste to the jaw crusher 20; and the second crushing step of crushing the first crushed stone into the cone crusher 30; and the second crushed stone screen 40 In the conventional waste sorting method of sorting through the sorting step of sorting and separating; and transporting each of the sorted crushed matter to the water tank 50 to separate the foreign matter and earth and sand; The first sorting step (S1) is added to (10) and sorted by large particles of raw stones and medium and small particles of stone and earth and sand; and the first crushing step of crushing the gemstones with the first jaw crusher 20 (S2). 2) a second crushing step (S2 ') of re-crushing the crushed matter with a second jaw crusher (20'); and the porous and the porous object (3-1) through the transfer conveyor (3-1) 41 is formed to be transferred to the first screen 40, the earth and sand through the porous network 41, the earth and sand discharge cone Discharge through the Bayer (3-3), the secondary and the small-sized stone is transferred to the conveying conveyor (3-2) to separate and sort the stone and soil according to the diameter of the secondary sorting step (S1 '); and the secondary sorting In the step S1 ′, the stones of the medium and small particles selected in the step S2 ′ and the stones of the medium and small particles crushed in the secondary crushing step S2 ′ are transferred to the second screen (3-2) (3-5). 40 ') and the soil mixed in each stone is discharged through the earth and sand discharge conveyor (3-3), the small particles of stone and gravel are transferred to the stone inlet conveyor (4) (4'), The stone is transferred to the conveying conveyor (3-6) and the third sorting step (S1 ") to separate and sort according to the diameter; and the porous network 41 'of the second screen 40' of the third sorted stone The third particle which is put into the crusher 30 through the conveying conveyor (3-6) to crush the stone of the heavy particles that did not pass through, and then re-inserted into the second screen 40 'through the conveying conveyor (3-7). Shredding step (S2 "); and Water treatment step of separating each stone and soil and foreign matter through the sediment separator (80) and the foreign matter separator (60) by introducing each of the three selected stones into the water collecting tank (50) by the inflow conveyor (4) (4 '). And the water-treated stone is introduced into the outlet conveyor (5) (5 ') formed with the discharge hole (7) to reduce the small amount of soil and water mixed in the stone to the water collecting tank (50) through the guide chute (6); Step (S4); Construction waste sorting method, characterized in that selected through.