KR20040070362A - system for remaking a waste concrete and its method - Google Patents

Abstract

PURPOSE: Provided are a method for recycling wasted concrete and an apparatus therefor to reduce an amount of waste by recycling the wasted concrete and prevent environment from being contaminated. CONSTITUTION: The recycling apparatus includes: a support hopper(10) to insert a wasted concrete mixed with metal or earth; a first grinder(20) to shatter the wasted concrete by a predetermined size; a first magnet discriminator(30) to discriminate metal from the shattered concrete; a first vibration screen(40) to divide the wasted concrete into earth and the wasted concrete by vibrating it up/down and left/right; a classifying device(50) to select sludge from the wasted concrete passed through the first vibration screen(40); a second grinder(50) to shatter the first shattered concrete by a size smaller than the first shattered size; a second magnet discriminator(70) to discriminate metal secondly; a second vibration screen to divide concrete from earth; a combining machine to generate a new wasted concrete by mixing the discriminated concrete with asphalt; a conveyer belt(120) that is installed between each device aforementioned to take wasted concrete discharged from each device to another devices; and a center controller to control operations of each device.

Description

System for remaking a waste concrete and its method

The present invention relates to a waste concrete waste recycling apparatus and a regeneration method thereof, and more particularly, to remove foreign substances such as metal or soil from the waste concrete (hereinafter referred to as waste) generated during repair of roads or buildings, and then shred them. The present invention relates to an improved waste concrete waste treatment and regeneration device for recycling to construction materials and a regeneration method thereof.

In order to build a road transportation network that is the basis of the development of the industry, construction of waste concrete or cement concrete is frequently performed on roads.

The paved road must be repaired when the road is damaged due to overloading vehicles or natural disasters.As a normal road repair method, a new asphalt or concrete covering the existing pavement is constructed or kicked off. It will be constructed with new asphalt or concrete.

Since the above-mentioned asphalt road uses waste oil as a caking agent, when the extracted asphalt is buried or left on the ground, waste oil is leached out, which causes another problem of contaminating groundwater or soil. come.

In order to solve this problem, the applicant has presented the alternatives in detail in Korean Patent Publication No. 2002-14871.

However, in recycling the waste concrete according to the prior art described above, the recycling width is narrow and is applied to only a few products, resulting in an increase in the cost of disposal of waste, which has no problem. This can be overcome by expanding the recycling area of the waste, but there is a problem that cannot be solved by the conventional regeneration apparatus and method.

One of them has to be pulverized smaller particles, and to sort them, there is a problem that must be overcome in advance the problem of removing foreign matters such as dust in the pulverized particles.

Therefore, the present invention has been created in order to solve the above-mentioned drawbacks, and an object of the present invention is to separate foreign materials such as metal or soil from the waste concrete waste, crush the selected waste concrete, and mix and reuse the mortar. By using the waste concrete waste to reduce the waste concrete waste by installing the concrete molded product manufacturing equipment that can process and produce a variety of products in connection with the waste concrete waste to process a large amount of waste concrete, The present invention provides an improved waste concrete waste recycling apparatus and its regeneration method capable of reducing costs.

The object of the present invention as described above is a hopper for supplying waste concrete waste mixed with metal or soil; A first crusher for crushing the waste concrete waste supplied from the supply hopper to a predetermined size; A first magnetic separator for sorting metal mixed in the waste concrete waste crushed by the first crusher; A first vibration screen for vibrating up and down and left and right to separate foreign materials such as soil and waste concrete from the waste concrete waste in which the metal material is first selected; A sorting device for separating foreign matters separated by the first vibrating screen from waste concrete; A second crusher for crushing the waste concrete firstly sorted by the sorting device to be smaller than the first crushing; A second magnetic separator for sorting the metal mixed in the waste concrete waste crushed by the second crusher; A second vibration screen for vibrating up and down and left and right to separate foreign materials such as soil and waste concrete from the waste concrete waste in which the metal material is selected secondly; An asphalt mixer for generating new waste concrete by mixing asphalt with the waste concrete selected by the second vibrating screen; In the waste concrete waste treatment and regeneration device comprising a conveyor belt for moving the waste concrete discharged from each device installed between each device to another device and a central control unit for controlling the operation of each device,

A third magnetizer for further installing a third crusher between the second vibrating screen and the asphalt mixer to pulverize the pulverized particles to a size of about 5 to 13 mm and to remove metal contained therein;

A conveyor type washing machine for washing the pulverized object selected by the third magnetic separator with water;

A cylindrical screen for selecting only sand having a grain size of 5 mm from the sand passing through the washing machine;

The screened sand is characterized by a mixer that mixes cement and water.

In addition, the recycling method using the waste concrete waste according to the object of the present invention:

Inputting the waste concrete waste into the hopper; A first crushing step of crushing the waste put into the hopper to a predetermined size; A primary metal sorting step of separating metal from the waste concrete pulverized in the first crushing step; Removing soil and foreign matter separating soil and foreign matter from the waste concrete from which metal is separated in the first metal sorting step, and separating foreign matter and waste concrete from each other; A first foreign matter sorting step of selecting and removing foreign matter separated in the foreign matter separating step; A second crushing step of crushing the waste concrete from which the foreign matter is selected in the first foreign matter sorting step; A secondary metal sorting step of selecting metal from the waste concrete crushed in the second crushing step; A second foreign matter sorting step of removing foreign matter not removed in the first foreign matter sorting step by applying vibration to the waste concrete from which metal is removed in the second metal sorting step; In the known waste concrete waste treatment and recycling method consisting of an asphalt mixing step of mixing the new asphalt to the waste concrete from which the foreign matter is removed by passing each step to make the waste concrete,

A pulverizing step of further pulverizing the particles such that the particle size of the waste is about 5 to 13 mm through a rule crusher as a subsequent step of the second foreign matter sorting step;

A washing step of transferring the pulverized crushed material to the conveyor belt to allow the conveyor belt to pass through the water to wash dust or the like stuck on the surface of the pulverized product;

A sorting step of sorting only sand having a size of 5 mm or less by putting the washed pulverized product moving along the conveyor belt into a cylindrical screen;

A mixing step of mixing the mortar (water and cement) by kneading the selected sand into a mixer;

This is accomplished by placing the mixed mixture into a form and forming it into the desired product.

1 is a block diagram of an improved waste concrete waste treatment and recycling apparatus according to the present invention;

2 is a process chart for explaining the improved method for treating and recycling waste concrete waste according to the present invention,

Figure 3 is a block diagram showing an example of an improved waste concrete waste treatment and recycling apparatus according to the present invention.

<Description of the code for the main part>

10: supply hopper 20: first shredder

30: first magnetic separator 40: first vibration screen

50: classifier 60: second shredder

70: second magnetic separator 80: second vibration screen

100: third shredder 110: third magnetic separator

120: conveyor belt 130: central control unit

201: washing machine 202: cylindrical screen sorter

203: Mixer 204: Molding Machine

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

For reference, the present invention will be described first for better understanding of a known waste concrete waste treatment and recycling apparatus according to the present invention, followed by a waste concrete waste treatment and recycling apparatus according to the present invention.

1 is a block diagram of an apparatus for treating and recycling waste concrete waste according to the present invention, FIG. 2 is a process diagram for explaining a method for treating and recycling waste concrete waste according to the present invention, and FIG. 3 is a waste according to the present invention. It is a block diagram which shows an example of the processing and regeneration device of concrete waste.

In the drawings, reference numeral 100a denotes apparatuses for treating and recycling conventional waste concrete waste, and 200b denotes apparatus configurations according to the present invention.

The conventional waste concrete waste treatment and recycling apparatus 100 includes a supply hopper 10 for inputting waste concrete waste, first and second crushers 20 and 60 for crushing waste concrete waste, and waste. Foreign material sorting means (30, 40, 50, 70, 80) for sorting foreign matter from concrete waste is provided.

The foreign matter sorting means includes a first magnet sorter 30, a first vibrating screen 40, a sorting device 50, a second magnetic sorter 70, and a second vibrating screen 80.

The supply hopper 10 is in communication with the first shredder 20. The first crusher 20 may be a jaw crusher or the like as a means for crushing the large waste concrete, where the foreign matter sandwiched between the waste concrete is separated from the waste concrete by crushing the waste concrete into small pieces.

One side of the first shredder 20, the conveyor belt 120 is installed as shown in FIG. 3, the first magnetic separator 30 is installed on the conveyor belt 120, the conveyor belt 12 The metal mixed with the waste concrete transported along is removed from the waste concrete by magnetic force.

The first vibration screen 40 is installed at the other end of the conveyor belt 120 connected to the first crusher 20, and the sorting device 50 is installed at one end of the first vibration screen 40. . The first vibrating screen 40 is to vibrate from side to side to allow a light foreign material, including a piece of wood mixed in the waste concrete, to move upwards, and is inclined to gradually lower toward the sorting device 50 so as to be gradually lowered. Waste concrete passing through) is removed by the fractionation device 50, the light foreign matter located on the top.

Another conveyor belt 120 is connected to one side of the sorting device 50, and a second crusher 60 is installed at an end of the conveyor belt 120, and a second magnetic separator 70 is provided at one side thereof. It is installed.

The sorting device 50 is formed in a water tank shape, and water for floating the sludge is stored therein, and a part of the conveyor belt passing through the water is immersed in the stored water so that light wood chips or paper contained in the waste concrete are included. The sludge such as back is floated to the top of the water is discharged to the opening formed on one side. A heating device is further installed outside the sorting device 50 to prevent water stored therein from freezing when the temperature is low, such as winter.

The second crusher 60 plays the same role as the first crusher 20 but crushes the waste concrete with particles smaller than the first crusher 20. While passing through the magnetic separator 70, if the metal is included, remove it.

The waste concrete crushed into small particles by the second crusher 60 and the metal is removed by the second magnetic separator 70 is installed at the other end of the conveyor belt 120 connected to the second crusher 60. The second vibrating screen 80 is supplied to the second vibrating screen 80 to vibrate left and right to discharge the waste concrete of the small particles of the waste concrete to the bottom.

The second vibrating screen 80 is formed with an outlet for discharging only the waste concrete of a predetermined size, the discharge belt is connected to the conveyor belt 120, the end of the conveyor belt 120, the third shredder 100 is installed, and the third magnet separator 110 is installed at the interruption of the conveyor belt connecting the conveyor belt installed at the front end of the third shredder 100 and the second vibrating screen 80.

The third crusher 100 and the third magnetic separator 110 crush the waste concrete not shredded by the first and second crushers 20 and 60 to 5 to 13 mm in size, Devices for removing metal.

In addition, the waste concrete treatment and regeneration device is provided with a central control unit (130). The central control unit 130 is for controlling the driving of the respective devices, the remote control of the respective devices is possible.

The sand crushed in the third crusher passes through the washing machine 201 along the conveyor belt 120.

The crushed sand has a fine powder, such as dust on the surface thereof, if used as it is, the viscosity is high, but the hardness is low, it may be a defective product of cemented products. Therefore, in order to remove the dust, etc., it is passed through the washing machine 201 to wash and remove the dust adhering to the particle surface of the pulverized product.

The washing machine 201 is provided with an aeration pipe for aeration of air therein. When the water contained in the washing machine is aerated into the surface by the aeration pipe, various suspended substances contained in the water float on the surface of the water, which is collected separately by manpower.

The washed sand is introduced along the transfer line to the cylindrical screen selector 202, and the sizes of 5 mm or more are separated and sorted separately through the discharge line, and only sand of 5 mm or less is introduced into the mixer 203.

The mixer 203 mixes cement and water in a known concrete mixing ratio and pours it into a mold (molding machine) 204 to produce a desired molded article. Various types of molded products can be manufactured such as bricks, boundary stones, sidewalk blocks, exterior panels of buildings, fume pipes, sewer pipes and drain pipes. Of course, the sand itself can be used as a building material without forming through the formwork as described above.

In addition, the method of treating and recycling waste concrete waste is largely composed of a process of crushing the waste concrete into particles of a predetermined size and removing foreign matters, and a recycling process of recycling wastes from which crushed and foreign matters are removed.

The process of crushing the waste concrete and removing foreign matters consists of a multi-step crushing process and the separation of foreign matters.

First, when the waste concrete waste is introduced into the hopper in the hopper feeding step (S1), the injected waste concrete is crushed by the first crusher 20 and the first vibrating screen 40 through the conveyor belt connected to the outlet side of the first crusher. It is transferred to) side.

Mixed between the waste concrete by the first magnetic separator 30 located at the middle of the conveyor belt installed between the first crusher 20 and the first vibrating screen 40 while being transferred to the first vibrating screen 40. The metal is removed.

The waste concrete moved to the first vibrating screen 40 is discharged to the ground or small foreign matter contained in the waste concrete by the vibration of the first vibrating screen 40, the waste concrete is the first vibrating screen 40 It is moved into the sorting device 50 installed on one side of the.

Sludge, such as bulky, light wood chips, contained in the waste concrete moved into the sorting device 50 is floated by the water supplied to the tank constituting the sorting device, and the sludge floated on one side of the tank. Is discharged with water through.

The waste from which the sludge is separated by the sorting device 50 is put into the second crusher 60 to be finely crushed and the crushed waste is moved to the second vibrating screen 80 by the conveyor belt 120. Also in this process, the metal material contained in the waste is removed by the second magnetic separator 70.

The waste concrete supplied in the second vibrating screen 80 is transferred to the third shredder 100 by another conveyor belt by dropping down the ones having a predetermined size when the second vibrating screen 80 vibrates. The waste transported to 100 is again crushed and then fed back onto the conveyor belt connecting the second magnetic separator 70 and the second vibrating screen 80 by the conveyor belt. In such a process, the metal in the waste is removed by the third magnetic separator 110.

The third crusher 100 and the third magnet selector 110 are crushed again so that the particles of the waste asphalt concrete are about 5 to 13 mm in size, and the metal contained therein is removed and then transported along the conveyor belt. The conveyor belt for removing the crushed dust stuck to the surface is passed through the water to perform the washing step (S10) for washing the crushed material, the washed sand is introduced into the cylindrical screen through the conveyor belt 5 mm or less The sorting step (S11) for sorting the sand is carried out, and the blended sand is mixed with cement and water at a known concrete blending ratio (S12). The blended dough is poured into the formwork to produce the desired molded article through the molding step (S13) for producing the desired molded article. In addition, the sand produced in the sorting step (S11) may be utilized as various building materials.

As described above, according to the present invention, waste concrete waste can be recycled and used again, thereby reducing the amount of industrial waste, thereby preventing the environment from being polluted.

In addition, since the heating device installed in the sorting device prevents freezing of water stored in the sorting device, there is an effect that the device of the present invention can be smoothly driven even in winter.

Claims (2)

A hopper 10 for supplying waste concrete waste mixed with metal or soil; A first crusher 20 for crushing the waste concrete waste supplied from the supply hopper 10 to a predetermined size; A first magnetic separator (30) for sorting the metal mixed in the waste concrete waste crushed by the first crusher (10); A first vibration screen 40 which vibrates up and down and left and right to separate foreign materials such as soil and waste concrete from the waste concrete waste in which the first metal material is selected; A sorting device (50) for sorting sludge from the waste concrete that has passed through the first vibrating screen (40); A second crusher (60) for crushing the waste concrete firstly sorted by the sorting device (50) than the first crushing; A second magnetic separator (70) for sorting metal mixed in the waste concrete waste crushed by the second crusher (60); A second vibrating screen (80) for vibrating up and down and left and right to separate foreign materials such as soil and waste concrete from the waste concrete waste in which the metal material is selected secondly; An asphalt mixer for generating new waste concrete by mixing asphalt with the waste concrete selected by the second vibrating screen (80); A conveyor belt 120 installed between the devices to move the waste concrete discharged from each device to another device; In the waste concrete waste treatment and regeneration device, characterized in that consisting of a central control unit 130 for controlling the driving of each device, A third crusher 100 for crushing the pulverized product to a size of about 5 to 13 mm by further installing a crusher between the second vibrating screen 80 and the asphalt mixer; A third magnetic separator (110) for removing metal by magnetic force on a conveyor belt for transferring the particles crushed by the crusher; A washing machine (201) through which the conveyor belt passes through the water in order to wash the pulverized object sorted by the third magnetic separator (110); A cylindrical screen sorter 202 for sorting only sand having a grain size of sand passing through the washer 201; The waste concrete waste recycling apparatus, characterized in that it further comprises a mixer (203) for the sand discharged from the separator (202) is introduced and mixed with the cement and water. Input step (S1) for injecting waste concrete waste into the hopper; A primary crushing step (S2) of crushing the waste put into the hopper to a predetermined size; Primary metal sorting step (S3) for separating the metal from the waste concrete pulverized in the first crushing step (S2); Removing the soil powder separating soil or small foreign matter from the waste concrete from which the metal is separated in the first metal sorting step (S3), and separating the soil powder and foreign matter separating the foreign matter from the waste concrete (S4); A sludge sorting step (S5) for sorting and removing sludge from the waste concrete from which the soil and the foreign matter are separated in the soil powder and foreign matter separating step (S4); A second crushing step (S6) of crushing the waste concrete, the sludge is selected in the sludge sorting step (S5) again; A secondary metal sorting step (S7) of selecting metal from the waste concrete crushed in the second crushing step (S6); A second foreign matter sorting step of removing foreign matter not removed in the first foreign matter sorting step by applying vibration to the waste concrete from which the metal is removed in the second metal sorting step (S7); In the recycling method using the waste concrete waste, characterized in that the asphalt mixing step of making the waste concrete by mixing the new asphalt to the waste concrete from which the foreign matter is removed through each step, A crushing step (S8) for further pulverizing the particle size to about 5 to 13 mm between the second crushing step and the second foreign matter sorting step; A third metal sorting step (S9) of removing metal from the particles crushed in the crushing step; A pulverizing step of crushing the pulverized product into a roll crusher again; A washing step (S10) of washing the dust by passing the conveyor belt 120 for transferring the pulverized product into the washing machine 201; A sorting step (S11) of inputting the washed crushed product into the cylindrical screen 202 to select only a predetermined size; A mixing step (S12) of mixing the selected material with a mortar (water and cement) in an appropriate ratio with a mixer; Waste concrete waste recycling method characterized in that it further comprises the step (S13) of putting the mixed mixture into the mold to form a desired product.