KR101863184B1 - Apparatus for producting cyclic aggregate with a function of separating organic debris and cement paste - Google Patents

Abstract

The present invention provides a device for producing a recycled aggregate including a function of separating organic foreign substances and cement paste. The device for producing the recycled aggregate including the function of separating the organic foreign substances and cement paste includes a unit for inducing a frictional force between aggregates to effectively remove the cement paste attached to the surface of the aggregate. According to the present invention, the device for producing the recycled aggregate including the function of separating the organic foreign substances and cement paste comprises: an aggregate inlet for receiving the recycled aggregate of a particle size of 40 mm or less in which inorganic foreign substances including stone dust are removed in advance after passing through a second or third crushing process using a jaw crusher or a cone crusher, from a transfer conveyor and injecting the received recycled aggregate into a recycled aggregate producing device; a material dispersing device for dispersing the organic foreign substances with particle sizes of 10 mm or less and the aggregate in the recycled aggregate producing device; a separated material outer eddy-inducing path provided to move the organic foreign substances with a particle size of 10 mm or less and the aggregate, separated by the material dispersing device, to the outside; a rising wind incline moving path moving rising wind generated by a lower air blower to an inclined direction to move the organic foreign substances with a particle size of 10 mm or less separated by the material dispersing device from the separated material outer eddy inducing path to the outside of the upper part; a foreign substance separating path connected by being extended to the outside of the rising wind incline moving path to discharge the foreign substances separated by the material dispersing device and fine dust generated by the material dispersing device to the outside; and a recycled aggregate discharge path connected to the lower side between the rising wind incline moving path and the foreign substance separating path to separate and discharge the aggregate separated by the material dispersing device by subjecting the aggregate to a free fall method.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for separating foreign matter from a recycled aggregate and removing cement paste using a low-speed VSI equipped with a rising blowing and a synthetic rubber rotating body,

The present invention relates to a method for producing recycled aggregate for recycling waste concrete generated at a construction site and reusing it as an aggregate. It is easy to use in connection with the existing recycled aggregate production process, The present invention relates to a recycled aggregate production apparatus capable of improving the quality of recycled aggregate by increasing the removal efficiency of organic foreign substances and the efficiency of removing adhered cement paste and securing a production amount exceeding a certain level.

Although a large amount of recycled aggregate is being discharged due to aging of buildings, due to lack of landfill, illegal dumping, etc., destruction of the natural environment is rampant. In accordance with the Act on the Promotion of Resource Conservation and Recycling, And recycling.

As a result, many companies in related technology produce recycled aggregate, but due to lack of technology and awareness, recycling of recycled aggregate is no longer mandatory. Each construction company avoids recycled aggregate, Which is a waste of enormous resources.

In other words, the amount of construction waste that can not be separated due to working conditions arising from waste concrete, waste asbestos, waste wood, rebar, soil, and other redevelopment sites generated at the construction site reaches more than 40 million tons per year. In order to recycle these construction wastes, it is necessary to sort the wastes through pre-processing before they are done. However, since the sorting of the wastes is not easy, 70% or more of the final produced recycled aggregate is used for the embankment and landfill. It is a reality that the recycling performance at the high value added portion is very low.

Particularly, it is common that cement paste (calcined dust) and organic matter are adhered to the surface of waste concrete. Since cement paste and organic matter lower the quality of recycled aggregate, in order to regenerate the aggregate of good quality, However, since the conventional recycled aggregate regenerating technology depends almost exclusively on the crushing technique for adjusting the size of the aggregate, the surface of the recycled aggregate produced by the conventional recycled aggregate reclaiming technology has a considerable amount of cement paste and organic matter The cement paste and organic matter adhering to the surface of the cement paste and the organic matter are not used as concrete aggregates for concrete and can be used only for the simple landfill or for the auxiliary foundation layer Disadvantage have.

Meanwhile, in recent years, there has been proposed a technique for recognizing the seriousness of resource recycling, environmental pollution, and the like, in order to recycle waste concrete crumbs having foreign substances adhered to the surface thereof as recycled aggregates of good quality.

Conventionally, the construction waste sorting and separation process is performed before the waste is put into the hopper, and after the waste is put into the hopper, it is separated and sorted. The selection system is composed of a trommel, a magnetic separator for sorting the iron species in the waste by magnetic force, a blower for sorting the waste by the wind power, and a wet process using the specific gravity difference. Each process includes metal, waste wood, , Red bricks, etc.) and organic matter (paper, vinyl, styrofoam, etc.). In this case, the separation efficiency is high, but mixed type construction waste is inefficient. Particularly, in the case of an organic foreign substance less than 10 mm, it is loaded in the waste concrete and is hardly separated, and the separation by the floating and washing method using the washing water is the most efficient. However, the wet process using the washing water is shown in FIG. 1100633, 2012. 01. 03.), the additional equipment is expensive, and the final product also functions as a large amount of water, thus causing problems such as drying and dehydration in selling and using the final product.

Also, the biggest problem in the use of recycled aggregate is the deterioration of aggregate quality due to the cement paste attached to the aggregate. A conventional crushing and crushing method for producing a general circulating aggregate includes a first crusher (a jaw crusher), a second crusher (a double jaw crusher or a cone crusher), a third crusher (a cone crusher) (Impact Crusher). However, since the cement paste is not separated sufficiently by simple crushing process in the process of producing aggregate, only about 20 ~ 30% of the input is produced as high quality recycled aggregate, ensuring economical efficiency. The actual production is impossible.

Korean Patent Registration No. 10-1100633; 2012. 01. 03. Announcement

In order to solve the above-mentioned problems, the present invention provides a method for separating and sorting construction waste mixed with wastes having different densities, constructions, and materials by disposing waste organic matter, which is contained in a recycled aggregate, And a means for separating the cement paste on the surface of the aggregate using a specific gravity difference between the cement paste and the aggregate, and further comprising means for inducing a frictional force between the aggregates in order to more effectively remove the cement paste adhered to the surface of the aggregate, And to provide a production apparatus.

As a means for solving the above-mentioned technical problems,

A second or third crushing process is performed using a jaw crusher or a cone crusher, and recycled aggregate having a particle size of 40 mm or less, which has been previously removed from inorganic matters including stones, is supplied from the conveying conveyor and vertically downward An aggregate input port for inputting;

A material dispersing apparatus for dispersing an aggregate and an organic foreign substance having a particle size of 10 mm or less in a recycled aggregate producing apparatus;

A separating material external vortex induction passage provided to horizontally outwardly move organic matter and aggregate of 10 mm particle size or less separated by the material dispersing device;

A rising air slope moving passage for moving the rising air generated by the lower air blower in an oblique direction so as to move the organic foreign matter less than 10 mm in particle size separated by the material dispersing device from the separating material outward traveling passage ;

A foreign matter separation passage extending to the outside of the upward air flow path for discharging the foreign matter separated from the material dispersion device and the fine particles generated in the material dispersion device to the outside;

The aggregate separated by the material dispersing device is separated from the separating material outer vortex induction passage and passes through the ascending air oblique moving passage while the foreign matter separated from the material dispersing device by the rising wind and the fine powder generated from the material dispersing device While being upwardly separated and discharged by the foreign matter separation passage, And a recirculating aggregate discharge passage connected downwardly between the upward-sloping traveling passage and the foreign-matter separating passage so as to be dropped and discharged in a free-fall manner by collision with the swash plate, and

Wherein the material dispersing apparatus comprises:

In order to effectively disperse the aggregate and organic matter falling downwardly and downwardly from the aggregate input port and to remove the cement paste from the surface of the waste concrete aggregate and to obtain additional crushing by the impact force, the aggregate is crushed by the impact force, A rotation striking plate provided to accelerate the desorption of the cement paste by a frictional force induced between the aggregates dispersed by repelling the aggregates in a horizontal direction through a rotating force; And

And a synthetic rubber material buffering member installed at a lower portion of the rotation striking plate for rotating the rotating striking plate to buffer an impact force by aggregate applied to the rotation striking plate. The present invention provides an apparatus for producing a recycled aggregate having an organic foreign matter and a cement paste separating function.

Here, on the upper surface of the rotary impact plate constituting the material dispersing apparatus, a projection is preferably provided to improve the abrasion action of the cement paste.

Here, it is preferable that the rotating body is composed of a low speed rotating body of 500 rpm or less.

According to the apparatus for producing a recycled aggregate having a function of separating an organic substance and a cement paste according to the present invention, it is possible to increase the efficiency of removing organic foreign matter having a size of 10 mm or less, which is a problem occurring in use of the recycled aggregate, It is possible to increase the removal efficiency of the paste to improve the quality of the recycled aggregate and to meet the required production amount required in the construction site.

The organic waste separated from the organic material and the recycled aggregate production apparatus having the function of separating cement paste according to the present invention has a particle size of 10 mm or less and is classified into combustible waste (paper, fiber, vinyl, etc.) So that it is possible to separate and select the environment and the environment.

Also, the apparatus for producing recycled aggregate having the function of separating the organic impurities and the cement paste according to the present invention provides a structure easy to use in connection with the existing recycled aggregate production process, and enables high value-added utilization using industrial waste And it is possible to contribute to protection of natural resources and environmental conservation through establishment of high quality technology of environmentally friendly recycled aggregate due to such technology development.

FIG. 1 is a view showing an example of an aggregate cleaning apparatus implementing a wet process using cleaning water according to the prior art.
FIG. 2 is a schematic view showing one embodiment of a main portion and an accessory device of an apparatus for producing a circulating aggregate having a function of separating cement paste from an organic substance according to the present invention.
FIG. 3 is an enlarged view of a main part of the recycled aggregate production apparatus shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, the apparatus 100 for producing a recycled aggregate having a function of separating organic impurities and cement paste according to a preferred embodiment of the present invention,

A second or third crushing process is carried out using a jaw crusher or a cone crusher and circulating aggregate having a particle size of 40 mm or less, which has been preliminarily removed from an inorganic foreign material including a stone, is supplied from the conveying conveyor 110 and fed into the circulating aggregate production apparatus 100 An aggregate input port 120 for vertically downward input;

A material dispersing device 130 for dispersing the aggregate and an organic foreign substance having a particle size of 10 mm or less in the horizontal direction in the recycled aggregate producing device 100;

A separating material outer vortex induction passage (140) provided to horizontally outwardly move organic particles and aggregates of 10 mm particle size or less separated by the material dispersing device (130);

The rising air generated by the lower air blower 155 is inclined so as to move the organic foreign matter less than 10 mm in particle size separated by the material dispersing device 130 from the separating material outer vortex induction passage 140 to the upper outer side A rising-air inclined traveling passage (150) for moving the air in the direction of the arrow;

A foreign matter separating passage 160 extending to the outside of the up-wind inclined traveling passage 150 for discharging foreign matter separated from the material dispersing device 130 and foreign matter generated in the material dispersing device 130 to the outside, ;

The aggregate separated by the material dispersing device 130 is separated from the material separating device 130 by the rising wind while passing through the separating material outer vortex induction passage 140 and passing through the upward air obliqueness traveling passage 150 And the fine particles generated in the material dispersing device 130 are upwardly separated and discharged to the foreign material separating passage 160 so as to be continuously centrifugally sprayed in the horizontal direction and collided with the swash plate 175 to be dropped and discharged in a free fall manner And a recycled aggregate discharge passage (170) connected downwardly between the upward sloping movement passage (150) and the foreign matter separation passage (160)

The material dispersing apparatus 130 may further include:

In order to effectively disperse the aggregate and the organic foreign matter which are injected from the aggregate input port 120 downward and to remove the cement paste from the surface of the waste concrete aggregate and to obtain additional crushing by the impact force, A rotation striking plate 132 provided for promoting desorption of the cement paste by a frictional force induced between the aggregates dispersed by repelling the impact-shredded aggregates horizontally through a rotating force; And

A rotating body 134 installed at a lower portion of the rotating striking plate 132 for rotating the rotating striking plate 132 and a synthetic rubber material buffering member 132 for buffering the impact force of the aggregate applied to the rotating striking plate 132, And a rotating body (134) having a rotating shaft (134a). The apparatus for producing a circulating aggregate having an organic substance and a cement paste separating function is provided.

The upper surface of the rotary striking plate 132 constituting the material dispersing apparatus 130 may be provided with a protrusion 132a for improving the abrasion of the cement paste.

Here, it is preferable that the rotating body 134 is composed of a low speed rotating body of 500 rpm or less.

In addition, it is preferable that a cone-shaped separator 122 is provided inside the aggregate input port 120 to effectively induce the separation and vortex formation of the material.

According to a preferred embodiment of the apparatus for producing recycled aggregate according to the present invention, it is possible to provide additional apparatuses as shown in FIG. 2 and FIG. 3. In the apparatus for producing recycled aggregate, The suspended particles are transferred to the cyclone dust collecting apparatus 200 through the upper dust separating line through the suction action of the turbo fan and the collected dust collected below the cyclone dust collecting apparatus 200 are collected through the rotary valve Is transferred to the outside through the screw conveying device 300. This external carry-out line is connected to a lower drop separation line for taking out a substance having a high dropping property out of the organic foreign substances or fine particles separated from the circulating aggregate production apparatus 100 do.

Meanwhile, materials such as combustible gas discharged upward from the cyclone dust collecting apparatus 200 may be supplied to a compressor through a solenoid valve 400 equipped with a timer and recycled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

100: Recycled aggregate production equipment
110: conveying conveyor
120: Aggregate input port
130: material dispersing device
140: Separating material outer vortex induction passage
150: rising-air inclined moving passage
160: foreign matter separation passage
170: Recycled aggregate discharge passage

Claims (3)

A secondary crusher or a third crushing process is performed using a jaw crusher or a cone crusher and circulating aggregate having a particle size of 40 mm or less, which has been previously removed from an inorganic foreign substance including a stone, is supplied from the conveying conveyor 110 and fed into the circulating aggregate production apparatus 100 An aggregate input port 120 for vertically downward input;
A conical separator 122 formed inside the aggregate input port 120 and guiding the circulated aggregate introduced into the aggregate input port 120 downward;
A material dispersing device 130 for dispersing the aggregate and an organic foreign substance having a particle size of 10 mm or less in the horizontal direction in the recycled aggregate producing device 100;
A separating material outer vortex induction passage (140) provided to horizontally outwardly move organic particles and aggregates of 10 mm particle size or less separated by the material dispersing device (130);
The rising air generated by the lower air blower 155 is inclined so as to move the organic foreign matter less than 10 mm in particle size separated by the material dispersing device 130 from the separating material outer vortex induction passage 140 to the upper outer side A rising-air inclined traveling passage (150) for moving the air in the direction of the arrow;
A foreign matter separating passage 160 extending to the outside of the up-wind inclined traveling passage 150 for discharging foreign matter separated from the material dispersing device 130 and foreign matter generated in the material dispersing device 130 to the outside, ;
The aggregate separated by the material dispersing device 130 is separated from the material separating device 130 by the rising wind while passing through the separating material outer vortex induction passage 140 and passing through the upward air obliqueness traveling passage 150 And the fine particles generated in the material dispersing device 130 are upwardly separated and discharged to the foreign material separating passage 160 so as to be continuously centrifugally sprayed in the horizontal direction and collided with the swash plate 175 to be dropped and discharged in a free fall manner A recycled aggregate discharge passage 170 connected downward between the upward sloping traveling passage 150 and the foreign matter separating passage 160 so as to be connected thereto;
A cyclone dust collecting device 200 connected to the foreign material separating passage 160 for sucking an organic substance or foreign matter in the foreign substance separating passage 160 into the turbo fan;
A screw conveying device 300 connected to a lower end of the cyclone dust collecting device 200 to collect collected dust collected under the cyclone dust collecting device 200 through a rotary valve and to carry it out to the outside;
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The material dispersing apparatus 130 may further include:
In order to effectively disperse the aggregate and the organic foreign matter which are injected from the aggregate input port 120 downward and to remove the cement paste from the surface of the waste concrete aggregate and to obtain additional crushing by the impact force, A rotation striking plate 132 provided for promoting desorption of the cement paste by a frictional force induced between the aggregates dispersed by repelling the impact-shredded aggregates horizontally through a rotating force; And
A rotating body 134 installed at a lower portion of the rotating striking plate 132 for rotating the rotating striking plate 132 and a synthetic rubber material buffering member 132 for buffering the impact force of the aggregate applied to the rotating striking plate 132, A rotating body 134 having a rotating shaft 134a;
And a cement paste separating function for separating the organic material and the cement paste from each other. 2. The apparatus according to claim 1, wherein a protrusion (132a) is provided on an upper surface of the rotating striking plate (132) constituting the material dispersing apparatus (130) to improve the abrasion action of the cement paste. Recycled aggregate production equipment with cement paste separation function. The apparatus for producing recycled aggregate according to claim 1 or 2, wherein the rotating body (134) is composed of a low speed rotating body of 500 rpm or less.

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