KR20150015790A - Equipments for treating construction waste - Google Patents

Abstract

Disclosed is a facility for treating construction waste. An embodiment of the present invention provides the facility for treating construction waste comprising: a waste treatment unit which removes clay powder and manufactures aggregate raw materials; and an aggregate manufacturing unit which manufactures coarse aggregate for concrete and washed sand from the aggregate raw materials. The present invention is to provide the facility for treating construction waste in which treatment of the construction waste and manufacturing of aggregate are completed in one facility, and which can increase recycling ratio of the construction waste.

Description

[0001] EQUIPMENTS FOR TREATING CONSTRUCTION WASTE [0002]

The present invention relates to a construction waste disposal facility.

Many structures, such as bridges, roads, and various buildings, which have arisen as a result of industrialization, have become obsolete over time. As a result, dismantling, reconstruction, and redevelopment of aged buildings are actively being carried out.

Much construction waste arises in the process of demolition, reconstruction or redevelopment of old structures. If such landfills are to be landfilled, it is difficult to obtain landfill sites, and landfill costs are high, which can have a serious adverse effect on the environment. Accordingly, a variety of construction waste disposal measures have been developed in terms of protection of the natural environment and recycling of resources.

As for the conventional construction waste disposal process, there is a construction waste intermediate processing company that performs the intermediate treatment such as crushing of construction waste collected at the construction site and removal of foreign matter, and there is an aggregate production company that produces the aggregate from the intermediate treated construction waste . That is, since the intermediate treatment process of the construction waste and the aggregate production process are performed in a separate space, there is a problem that unnecessary cost and time are required such as transportation cost between processes. In addition, since various aggregates can not be simultaneously produced from construction waste, only one aggregate is produced, and some construction waste that can be recycled as aggregate is discarded as it is. In addition, since most of the construction waste disposal process takes place outdoors, the work environment is poor, causing atmospheric and noise pollution, causing civil complaints of local residents, and difficulty in selecting a site for a construction waste disposal plant.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2007-0106346 (November 11, 2007, Processing Equipment for Construction Waste).

Embodiments of the present invention are intended to provide a construction waste treatment facility in which construction waste treatment and aggregate production are carried out in a single facility and the recycling rate of construction waste can be increased.

According to an embodiment of the present invention, there is provided a waste processing unit for removing soil from a construction waste and producing aggregate raw materials; And an aggregate producing unit for producing coarse aggregate for concrete and washed sand from the aggregate raw material.

The coarse aggregate for concrete has a particle size of 5 mm or more and 27 mm or less, and the washed sand may have a particle size of 5 mm or less.

The waste disposal unit and the aggregate production unit may be installed indoors.

And a waste storage unit for receiving construction waste to be supplied to the waste treatment unit as an indoor space separated from the waste treatment unit and the aggregate production unit.

The apparatus may further include a spray device installed on the waste disposal unit and the aggregate production unit and spraying water to remove scattered dust generated in the waste disposal unit and the aggregate production unit.

The waste disposal unit includes a first discharge conveyor for discharging the soil to the outside; And a second discharge conveyor capable of selectively performing either of a forward rotation operation for discharging the aggregate material to the outside, and a reverse rotation operation for supplying the aggregate material to the aggregate production unit.

The aggregate production unit may include a third discharge conveyor for discharging the coarse aggregate for concrete to the outside; And a fourth discharge conveyor for discharging the washed sand outdoors.

The waste treatment unit may include a construction waste hopper into which the construction waste is injected; A first toothed screen section for sorting and delivering to the first discharge conveyor the fraction of the first granularity or less from the construction waste input into the construction waste hopper; A construction waste dismantling unit for disrupting the construction waste filtered by the first toothed screen unit to a third particle size or less; And an aggregate material screen unit for selecting aggregate material having a third particle size or less from the construction waste crushed by the construction waste disintegration unit and discharging the aggregate material to the second discharge conveyor.

The waste disposal unit may further include a first blower for removing foreign substances such as vinyl, wood chips, etc. from the aggregate material discharged from the screen of the aggregate material screen to the second discharge conveyor.

The first particle size may be 100 mm.

The third particle size may be 27 mm.

The waste processing unit may include a magnetic force sorting device for sorting magnetic pieces of iron pieces in a soil portion of a first particle size or less selected from the first toothed screen portion; And a second fractionation unit that separates the second fractionation fraction and the second fractionation fraction from the second fractionation fraction and discharges the same to the first fractionation conveyor, And a second soil screen unit for filtering the construction waste mixed with the soil and supplying the screen to the aggregate material screen unit.

The waste disposal unit may further include a second blower for removing foreign matter such as vinyl, wood chips, etc. from the construction waste discharged from the second screen portion to the aggregate material screen portion.

The second particle size may be 20 mm.

The waste disposal unit may further include a conveyance conveyor for conveying the construction waste filtered by the aggregate material screen to the construction waste disposal unit.

The aggregate production unit may discharge the aggregate material supplied from the waste treatment unit by spraying water to clean the sand having a fourth particle size or less and discharge it to the fourth discharge conveyor, And discharging the coarse aggregate for concrete left to the third discharge conveyor.

The fourth particle size may be 5 mm.

The aggregate production unit may further include an aggregate material hopper for supplying the aggregate material from the outside to the first washing sand screen unit.

The aggregate production unit may include a first wet separator for removing foreign substances such as vinyl, wood chips and the like using the specific gravity difference in the washing sand sorted and separated from the first washing sand screen unit; And a washing and dewatering device for washing and dewatering water sprayed on the washing sand removed from the first wet separator by removing foreign matter, and discharging washed and dewatered washing sand to the fourth discharge conveyor.

Wherein the aggregate producing unit comprises: an aggregate material crushing unit for crushing coarse aggregate for concrete filtered by the first washing sand screen unit; A second wet separator for removing impurities such as vinyl and wood chips from the coarse aggregate for concrete crushed by the aggregate material crushing unit using the specific gravity difference; And the second wet separator removes foreign matter and then discharges water into the coarse aggregate for concrete to be washed to discharge the washed sand of the fourth particle size or less to the first wet separator, And a third washing sand screen unit for discharging coarse aggregate for concrete, which is separated from sand, to the third discharge conveyor.

The aggregate material crushing unit may include an impact crusher capable of crushing the coarse aggregate for concrete and separating the sand attached to the coarse aggregate for concrete.

The aggregate production unit may further include a wastewater treatment unit for recovering the washing sand mixed with the wastewater discharged from the washing and dewatering unit and supplying the collected sand to the first wet separator.

According to the embodiments of the present invention, waste treatment and aggregate production are performed in one facility, thereby reducing unnecessary time and cost for transportation of the aggregate raw materials between the processes.

In addition, according to the embodiments of the present invention, it is possible to minimize the waste of aggregate raw materials produced in construction waste by simultaneously producing coarse aggregate and washed sand from aggregate raw materials produced from construction waste.

In addition, according to some embodiments of the present invention, the construction waste disposal and the aggregate production are carried out indoors, whereby a spray device capable of removing scattered dust can be installed to improve the working environment and to reduce the atmospheric and noise pollution Friendly construction waste disposal facility in which local residents' reaction is reduced.

1 illustrates a construction waste treatment facility according to an embodiment of the present invention.
[0001] The present invention relates to a construction waste disposal facility,
Fig. 3 shows an embodiment of a waste treatment section; Fig.
4 is a view showing an embodiment of an aggregate production section.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, various embodiments of a construction waste disposal facility according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals designate like or corresponding components, A duplicate description will be omitted.

FIG. 1 is a view showing a construction waste disposal facility according to an embodiment of the present invention, and FIG. 2 is a view showing an indoor arrangement structure of a construction waste disposal facility according to an embodiment of the present invention.

1 and 2, a construction waste treatment facility 10 according to an embodiment of the present invention may include a waste storage unit 100, a waste treatment unit 200, and an aggregate production unit 300.

The waste storage unit 100 provides a space for accommodating the construction waste collected at the construction site. That is, the waste storage unit 100 can unload the construction waste while the dump truck loaded with the construction waste enters and exits.

The waste storage part 100 may be formed indoors together with the waste treatment part 200 and the aggregate production part 300. That is, the waste storage unit 100, the waste treatment unit 200, and the aggregate production unit 300 may be formed in the building B. However, the waste storage unit 100 may be formed in a space separated from the waste treatment unit 200 and the aggregate production unit 300. As a result, the risk of damage to various facilities of the waste treatment unit 200 and the aggregate production unit 300 due to heavy equipment such as a dump truck or a crane that can be mobilized in the waste storage unit 100 can be reduced, And the aggregate production unit 300 can be provided with a pleasant and safe working environment.

The waste storage unit 100 may include a supply conveyor 101.

The supply conveyor 101 supplies construction waste accommodated in the waste storage unit 100 to the waste treatment unit 200.

The supply conveyor 101 is formed in a plurality of units, so that the construction waste accommodated in the waste storage unit 100 can be smoothly supplied to the waste processing unit 200.

The waste disposal unit 200 removes soil and the like from the construction waste supplied from the waste storage unit 100 and produces aggregate raw materials. In this specification, an aggregate raw material means a material which is crushed to a certain particle size, for example, 27 mm or less in a state in which soil, iron pieces, and foreign matter are removed from construction waste and becomes a raw material of aggregate.

The waste treatment unit 200 may include a spray device 201.

The spray device 201 is installed on the upper part of the waste disposal unit 200 to remove scattered dust generated in the waste disposal unit 200. As a result, the spray device 201 can provide a comfortable working environment to the waste disposal unit 200.

The waste treatment section 200 may include a first discharge conveyor 203 and a second discharge conveyor 205.

The first discharge conveyor 203 discharges the soil separated from the construction waste to the outside.

The second discharge conveyor 205 can selectively perform either the forward rotation operation A1 or the reverse rotation operation A2. That is, in the case of the forward rotation operation A1, the second discharge conveyor 205 discharges the aggregate material produced from the construction waste to the outside, and in the case of the reverse rotation operation A2, the aggregate material produced from the construction waste And supplies it to the aggregate production unit 300. As a result, the second discharge conveyor 205 performs a forward rotation operation (A1) in the case of producing from the construction waste to the aggregate raw material. In the case of producing the coarse aggregate and the washing sand for the concrete from the construction waste, A2).

The aggregate production unit 300 simultaneously produces coarse aggregate and washing sand for the concrete from the aggregate raw material.

The aggregate raw material may be supplied from the waste treatment unit 200 or supplied from the outside through the aggregate raw hopper 320 (see FIG. 4).

Coarse aggregate for concrete and washed sand can be produced separately according to the grain size. For example, coarse aggregate for concrete may have a particle size of greater than 5 mm but less than 27 mm, and washed sand may have a particle size of less than 5 mm. The aggregate production unit 300 can simultaneously produce coarse aggregate for concrete and washed sand from the aggregate raw material, thereby producing high-quality aggregates separated in granularity and minimizing the waste of aggregate raw materials produced in construction waste.

The aggregate production unit 300 may include a spray device 301.

The spray device 301 is installed on the upper part of the aggregate production part 300, so that scattered dust generated in the aggregate production part 300 can be removed. As a result, the spray device 301 can provide a pleasant working environment to the aggregate production unit 300.

The aggregate production unit 300 may include a third discharge conveyor 303 and a fourth discharge conveyor 305. [

The third discharge conveyor 303 discharges coarse aggregate for concrete produced from the aggregate raw material to the outside.

The fourth discharge conveyor 305 discharges the washed sand produced from the aggregate raw material to the outside.

3 is a view showing an embodiment of the waste treatment section.

3, the waste disposal unit 200 includes a construction waste hopper 210, a first toothed screen unit 220, a construction waste disintegration unit 230, an aggregate material screen unit 240, a first blower 250, A magnetic force selecting device 260, a second toothed screen portion 270, a second blower 280, and a conveying conveyor 290.

The construction waste supplied to the construction waste hopper 210 through the supply conveyor 101 is introduced.

The first toothed screen unit 220 separates the soil particles having the first particle size or less from the construction waste introduced into the construction waste hopper 210 and discharges the same to the first discharge conveyor 203. To this end, the first floor part 220 may comprise a vibrating screen device, for example a scalping screen equipment. The first and second subsoil fractions separated by the first toothed screen section 220 may pass through the magnetic separator 260 and the second toothed screen section 270 before being discharged to the first discharge conveyor 203. In this embodiment, the first particle size may be 100 mm. By setting the first particle size larger than that of the soil particle, the iron particles contained in the construction waste can be discharged together with the soil through the first soil screen section 220. However, when the first particle size is set larger than the soil particle size, there is a problem that the amount of the construction waste discharged together with the soil particle also increases. In order to solve this problem, it is possible to recover the construction waste, which can be an aggregate material, in the second soil screen portion 270 after removing iron pieces from the magnetic force sorting device 260. The magnetic force selecting device 260 and the second floor screen unit 270 will be described later in detail. On the other hand, when the first grain size exceeds 100 mm, it has been confirmed that the efficiency of separating iron pieces is not substantially increased, and it is said that 100 mm has a critical significance.

The construction waste crushing unit 230 crushes the construction waste filtered by the first toothed screen unit 220 to a third particle size or less. In this embodiment, the third grain size may be 27 mm. By setting the third grain size to the grain size of the coarse aggregate for concrete, the aggregate raw material passed through the waste treatment section 200 can be directly used as a low quality aggregate without passing through the aggregate producing section 300 and without separation of the granules. In this case, the second discharge conveyor 205 discharges the aggregate material produced in the construction waste by the forward rotation operation A1. Meanwhile, before the construction waste filtered by the first toothed screen unit 220 is input to the construction waste crushing unit 230, it is possible to manually remove a large foreign object such as a reinforcing bar by using attraction force.

The construction waste crushing unit 230 includes a first crushing unit 231, a first iron piece separating unit 232, a second crushing unit 233, a second iron piece separating unit 234, a third crushing unit 235, And a third iron separator 236.

The first crushing device 231 is a device for first crushing the construction waste filtered by the first tofu screen portion 220 and can be crushed to a particle size of, for example, 150 mm to 200 mm.

The first iron piece separating device 232 separates iron pieces from the construction waste having passed through the first crushing device 231 using magnetic force, for example, an electromagnet. The first iron piece separating device 232 may be formed on a conveying conveyor connecting the first crushing device 231 and the second crushing device 233.

The second crushing device 233 is a device for secondarily crushing the first-crushed construction waste in the first crushing device 231, and can be crushed to a particle size of, for example, 60 mm to 70 mm.

The second iron piece separator 234 separates iron pieces from the construction waste that has passed through the second crusher 233 using magnetic force, for example, electromagnets. The second iron separator 234 may be formed on a conveying conveyor connecting the second crushing device 233 and the third crushing device 235.

The third crushing device 235 is a device for crushing the secondarily crushed construction waste in the second crushing device 233, and can be crushed to, for example, 27 mm or less.

The third iron separator 236 separates iron pieces from the construction waste that has passed through the third crusher 235 by using magnetic force, for example, electromagnets. The third iron separator 236 may be formed on a conveying conveyor connecting the third crushing device 235 and the aggregate raw material screen portion 240.

The first shredding device 231 and the second shredding device 233 may include a jaw crusher and the third shredding device 235 may include a cone crusher. A jaw crusher is a known device that crushes the construction waste between a fixed point and a rocking movable point, has a simple structure and a high crushing rate. A cone crusher is a known device, which is made by crushing the construction waste to a certain size by the eccentric rotation of the cone shaft, and is suitable for mass production of the fine aggregate while complicating the structure.

The aggregate material screen unit 240 separates the aggregate material having a third particle size or less from the construction waste crushed in the construction waste crushing unit 230 and discharges the aggregate material to the second discharge conveyor 205. To this end, the aggregate material screen portion 240 may include a vibrating screen device, for example, scalping screen equipment. The aggregate material having a third particle size or less selected and discharged from the aggregate material screen section 240 may pass through the first blower 250 before being discharged to the second discharge conveyor 205.

The first blower 250 can remove foreign substances such as vinyl and wood chips from the aggregate material discharged to the second discharge conveyor 205 through the aggregate material screen unit 240 by wind. The first blower 250 may be formed on the second discharge conveyor 205.

The magnetic force sorting device 260 separates iron pieces from the first and second particle sizes separated by the screen portion 220 using a magnetic force, for example, an electromagnet. The magnetic force sorting device 260 may be formed on a conveying conveyor connecting the first toothed screen portion 200 and the second toothed screen portion 270.

The second to-be-screened screen unit 270 selects and distributes the second and third to-be-less soot particles to the first discharge conveyor 203, separates the remaining second- And supplies it to the raw material screen unit 240. To this end, the second floor screen portion 270 may include a vibrating screen device, for example, scalping screen equipment. In this embodiment, the second particle size may be a soil particle size, for example 20 mm. As described above, the first grain size in the first to-be-screen 220 is set to be larger than the grain size of the soil, so that the iron pieces included in the construction waste can be discharged together with the soil through the first to- However, when the first particle size is set larger than the soil particle size, there is a problem that the amount of the construction waste discharged together with the soil particle also increases. In order to solve such a problem, after removing the iron pieces from the magnetic separator 260, it is possible to recover the construction waste that can be the aggregate raw material in the second toothed screen portion 270. The construction waste recovered in the second toothed screen portion 270 may pass through the second blower 280 before being supplied to the aggregate material screen portion 240.

The second blower 280 can remove foreign substances such as vinyl and wood chips from the construction waste supplied to the aggregate material screen unit 240 through the second toothed screen unit 270 by wind force. The second blower 280 may be formed on a conveying conveyor connecting the second toothed screen portion 270 and the aggregate material screen portion 240.

The conveying conveyor 290 transports the construction waste filtered by the aggregate material screen unit 240 to the construction waste crushing unit 230, specifically, the third crushing apparatus 235. The construction waste conveyed to the third crushing device 235 is crushed to less than 27 mm so as to pass through the aggregate material screen portion 240. The reason why the conveying conveyor 290 conveys the construction waste filtered by the aggregate material screen portion 240 to the third crushing device 235 instead of the first crushing device 231 or the second crushing device 233 is that the first The crushing apparatus 231 and the second crushing apparatus 233 include a crusher having a high crushing ratio while the third crushing apparatus 235 includes a cone crusher suitable for producing a fine aggregate, Almost all of the construction waste filtered by the crusher 240 has already been crushed to a predetermined particle size, for example, 70 mm or less, in the first crushing device 231 and the second crushing device 233. That is, it is appropriate that the construction waste filtered by the aggregate material screen portion 240 is input to the third crushing device including the cone crusher.

4 is a view showing an embodiment of an aggregate production unit.

4, the aggregate production unit 300 includes a first washing sand screen unit 310, an aggregate material hopper 320, a first wet separator 330, a washing and dewatering unit 340, an aggregate material crushing unit 350 A second wet separator 360, a third washing sand screen section 370, and a wastewater treatment section 380.

The first washing sand screen unit 310 selectively discharges washing sand having a fourth particle size or less while discharging the water to the aggregate material supplied from the waste processing unit 200 and discharging the washing sand to the first wet separator 330, And the coarse aggregate for concrete left after the washing sand having the fourth particle size or less is separated from the raw material is discharged to the aggregate material crushing unit 350. To this end, the first cleaning sand screen portion 310 may include a vibrating screen device, for example a scalping screen equipment. In this embodiment, the fourth particle size may be a wash sand particle size, for example, 5 mm. Meanwhile, the aggregate material supplied to the first washing sand screen unit 310 may be supplied directly from the waste treatment unit 200 or may be supplied from the outside through the aggregate material hopper 320.

The aggregate material hopper 320 may be formed on the second discharge conveyor 205.

The first wet separator 330 removes foreign substances such as vinyl, wood chips and the like using the specific gravity difference in the washing sand sorted and separated from the first washing sand screen unit 310. Specifically, the first wet separator 330 includes a cylindrical tank. When a mixture of water and washing sand is injected in the tangential direction in the tank, foreign matter such as vinyl, wood chips, By lifting, foreign substances such as vinyl, wood chips and the like can be removed from the washed sand. Meanwhile, the water required for the first wet separator 330 may be water that is injected into the aggregate material in the first washing sand screen unit 310 and then introduced into the first wet separator 330 together with the washing sand.

 The washing and dewatering device 340 may be dehydrated through a screen having a particle size smaller than the washing sand particle size, for example, 0.7 mm, while spraying the washing sand through the first wet separator 330 to wash the water. The washed sand washed and dewatered through the washing and dewatering device 340 is discharged to the outside through the fourth discharge conveyor 305.

The aggregate material crushing unit 350 crushes coarse aggregate for concrete filtered by the first washing sand screen unit 310.

The aggregate material crushing unit 350 may include an impact crusher. Impact crusher is a known device that crushes coarse aggregate for concrete and crushes it, thereby effectively separating sand attached to coarse aggregate for concrete.

The aggregate material crushing unit 350 may include a fourth iron separator 351, a first impact crusher 352, a second washing sand screen unit 353, and a second impact crusher 354.

The fourth iron separator 351 separates the iron pieces from the coarse aggregate for concrete which has passed through the first washing sand screen unit 310 by using magnetic force, for example, an electromagnet. The fourth iron separator 351 may be formed on a conveying conveyor connecting the first washing sand screen unit 310 and the first impact crusher 352.

The first impact crusher 352 is a device for crushing coarse aggregate for concrete, which is filtered by the first washing sand screen unit 310, by crushing and crushing the coarse aggregate for concrete as described above, The attached sand can be efficiently separated.

The second washing sand screen unit 353 is used for spraying water to the coarse aggregate for concrete supplied from the first impact crusher 352 to clean the washing sand having the fourth particle size or less, And the remaining coarse aggregate for concrete is discharged to the second impact crusher 354. To this end, the second washed sand screen portion 353 may comprise a vibrating screen device, for example a scalping screen equipment.

The second impact crusher 354 is a device for secondarily crushing coarse aggregate for concrete firstly crushed in the first impact crusher 352. The crushing is performed by applying impact to the coarse aggregate for concrete as described above, It is possible to efficiently separate the sand attached to the sand.

The second wet separator 360 removes foreign substances such as vinyl and wood chips from the coarse aggregate for concrete that has been crushed by the aggregate material crushing unit 350 using the difference in specific gravity. Specifically, the second wet separator 360 includes a cylindrical tank, and when a mixture of water and coarse aggregate for concrete is injected in the tangential direction in the tank, foreign substances such as vinyl and wood chips mixed with coarse aggregate for concrete Due to the difference in specific gravity, foreign bodies such as vinyl and wood chips can be removed from coarse aggregate for concrete. On the other hand, the coarse aggregate for concrete, which has been crushed in the aggregate material crushing unit 350, may be mixed with water before being injected into the second wet separator 360.

The third washing sand screen unit 370 is used to spray water onto the coarse aggregate for concrete which has passed through the second wet separator 360 and to wash the sand of the fourth particle size or less and discharge it to the first wet separator 330 And the remaining coarse aggregate for concrete is discharged to the outside through the third discharge conveyor 303. To this end, the third washing sand screen portion 370 may include a vibrating screen device, for example a scalping screen equipment.

The aggregate production unit 300 is configured such that the coarse aggregate for concrete filtered by the first washing sand screen unit 310 is separated from the aggregate material crushing unit 350 and particularly the first impact crusher 352, the second washing sand screen unit 353, 2 impact crusher 354 and the third washing sand screen unit 370, the sand components contained in the coarse aggregate for concrete filtered by the first washing sand screen unit 310 can be efficiently separated.

The wastewater treatment unit 380 treats the wastewater discharged from the washing and dewatering unit 340. In addition, the wastewater treatment unit 380 may treat the entire wastewater discharged from the construction waste treatment facility 10 as well as the washing / dewatering unit 340.

The wastewater treatment unit 380 may include a collecting unit 381, a fine sand recovery unit 382, a settling tank 383, and a sludge dewatering unit 384.

The water collection vessel 381 temporarily accommodates the wastewater discharged to the washing and dewatering apparatus 340.

The fine sand recovery device 382 receives the wastewater from the collection tank 381, collects the washed sand discharged together with the wastewater, and returns it to the first wet separator 330. For this purpose, the fine sand recovery device 382 may include cyclone equipment. The cyclone equipment is a well-known apparatus, and it is possible to separate washing sand mixed with wastewater by centrifugal force generated by swirling flow of wastewater.

The sedimentation tank 383 precipitates the wastewater from which the washing sand has been removed in the fine sand recovery device 382, and separates the wastewater into fresh water and sludge. Fresh water separated in the settling tank 383 can be reused as wash water, and the sludge is supplied to the sludge dewatering unit 384. [

The sludge dewatering device 384 dehydrates the sludge and discharges it to a sludge cake. The sludge dewatering device 384 may be a squeezing device for squeezing and dewatering the sludge. On the other hand, the sludge cake discharged from the sludge dewatering device 384 can be treated by various known techniques.

Hereinafter, the operation of the construction waste disposal facility 10 according to an embodiment of the present invention will be briefly described.

The construction waste collected at the construction site where the old structure is dismantled, reconstructed or redeveloped is transferred to the waste storage unit 100 by the dump truck and unloaded. Since the waste storage unit 100 is installed indoors, noise and air pollution that may occur during the unloading of construction waste can be minimized. In addition, the building B blocks the waste storage part 100 from the outside, so that the beauty of the city is not hurt.

The construction waste accommodated in the waste storage unit 100 is supplied to the waste treatment unit 200 through the supply conveyor 101.

In the waste treatment unit 200, the construction waste is separated into construction waste and soil by passing through the first to-be-screen unit 220.

The construction waste filtered by the first toothed screen unit 220 is crushed to a size that can be used as aggregate raw material through the construction waste crushing unit 230. Concretely, the construction waste filtered by the first to-be-screen 220 is supplied to the first crushing device 231, the first crushing device 232, the second crushing device 233, the second crushing device 234, The third crushing device 235 and the third steel separating device 236 in this order to be crushed into coarse aggregate for concrete. The construction waste disintegrated with the coarse aggregate particle size for concrete is sorted into the aggregate material through the aggregate material screen section 240 and then discharged to the outdoor or aggregate production section 300 through the second discharge conveyor 205. The aggregate material that has passed through the aggregate material screen section 240 may be removed through the first blower 250 before being discharged to the outdoor or aggregate production section 300 through the second discharge conveyor 205 have. The construction waste filtered at the aggregate raw material screen unit 240 may be transported to the construction waste disintegration unit 230, more specifically, to the third disintegration unit 235 through the transport conveyor 290.

The soil particles having passed through the first screen portion 220 are discharged through the first discharge conveyor 203 after the iron particles are removed while passing through the magnetic separator 260. Before being discharged to the outside through the first discharge conveyor 203, the soil waste is collected through the second soil screen unit 270 and mixed with the soil. The construction waste recovered from the soil mine is supplied to the aggregate material screen unit 240 after the foreign material is removed from the second blower 280.

In the aggregate production unit 300, the aggregate material is separated into coarse aggregate for concrete and washing sand while passing through the first washing sand screen unit 310.

In the first washing sand screen unit 310, the aggregate material is separated into coarse aggregate for concrete and washing sand while spraying water on the aggregate material and washing. The aggregate material may be introduced into the first washing sand screen portion 310 through the second discharge conveyor 205 or the aggregate material hopper 320.

The washing sand having passed through the first washing sand screen unit 310 is cleaned and dewatered in the washing and dewatering apparatus 340 after the foreign matter is removed from the first wet separator 330 and is discharged through the fourth discharge conveyor 305 And is discharged outdoors.

The coarse aggregate for concrete that is filtered by the first washing sand screen unit 310 includes aggregate material crushing unit 350, specifically, a fourth iron piece separator 351, a first impact crusher 352, The second impact crusher 353, and the second impact crusher 354 in order, and sand components contained in the coarse aggregate for concrete are separated. The coarse aggregate for concrete having passed through the aggregate material crushing unit 350 is removed from the second wet separator 360 and then introduced into the third washing sand screen unit 370. The third washing sand screen unit 370 discharges the washing sand mixed with the coarse aggregate for concrete into the first wet separator 330 while spraying water on the coarse aggregate for concrete and discharges the remaining coarse aggregate for the concrete 3 discharge conveyor 303 to the outside. On the other hand, the wastewater discharged from the washing and dewatering unit (340) is treated in the wastewater treatment tank (380). In the wastewater treatment tank 380, the wastewater is temporarily stored in the collecting tank 381, and then is input to the fine sand recovery device 382. The fine sand recovery device 382 recovers the fine sand mixed with the wastewater and supplies it to the first wet separator 330. The wastewater discharged from the fine sand recovery device 382 is introduced into the sedimentation tank 383. In the settling tank 383, the wastewater is separated into recycled fresh water and sludge. The recycled fresh water is discharged from the sedimentation tank 383, and the sludge is supplied to the sludge dewatering device 384 and squeezed out by the sludge cake.

Spraying devices 201 and 301 are formed on the upper portions of the waste treatment unit 200 and the aggregate production unit 300 to remove scattered dust generated in the waste treatment unit 200 and the aggregate production unit 300, Can be provided.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10: Construction waste treatment plant
100: waste storage unit
101: Feed conveyor
200: waste treatment section
201: Spray device
203: 1st discharge conveyor
205: 2nd discharge conveyor
210: Construction waste hopper
220: first screen portion
230: Construction waste dismantling department
231: First crushing device
232: first iron separator
233: Second crushing device
234: Second iron separator
235: Third crushing device
236: Third iron separator
240: Aggregate raw material screen portion
250: First blower
260: magnetic force sorting device
270: second screen portion
280: Second blower
290: Conveying conveyor
300: aggregate production department
301: Spray device
303: Third discharge conveyor
305: Fourth discharge conveyor
310: first washing sand screen part
320: Aggregate feed hopper
330: first wet separator
340: Cleaning dehydrator
350: aggregate material crushing section
351: Fourth steel separator
352: First Impact Crusher
353: second washing sand screen section
354: Second Impact Crusher
360: Second Wet Separator
370: third washing sand screen part
380: Wastewater treatment section
381: Edit House
382: Fine sand recovery device
383: Settling tank
384: Sludge dewatering device

Claims (22)

A waste treatment unit for removing soil from the construction waste and producing aggregate raw material; And
And a aggregate producing unit for producing coarse aggregate and washing sand for the concrete from the aggregate raw material.
The method according to claim 1,
The coarse aggregate for concrete has a particle size of 5 mm or more and 27 mm or less,
Wherein the washed sand has a particle size of 5 mm or less.
3. The method according to claim 1 or 2,
Wherein the waste treatment unit and the aggregate production unit are installed indoors.
The method of claim 3,
And a waste storage unit for storing construction waste to be supplied to the waste treatment unit, the waste storage unit being separated from the waste treatment unit and the aggregate production unit.
5. The method of claim 4,
And a spray device installed on the waste treatment part and the aggregate production part and spraying water to remove scattered dust generated in the waste treatment part and the aggregate production part.
5. The method of claim 4,
The waste treatment unit includes:
A first discharge conveyor for discharging the soil to the outside; And
And a second discharge conveyor capable of selectively performing either of a forward rotation operation for discharging the aggregate material to the outside, and a reverse rotation operation for supplying the aggregate material to the aggregate production unit.
5. The method of claim 4,
The aggregate-
A third discharge conveyor for discharging the coarse aggregate for concrete to the outside; And
And a fourth discharge conveyor for discharging the washed sand to the outside of the building.
The method according to claim 6,
The waste treatment unit includes:
A construction waste hopper into which the construction waste is input;
A first toothed screen section for sorting and delivering to the first discharge conveyor the fraction of the first granularity or less from the construction waste input into the construction waste hopper;
A construction waste dismantling unit for disrupting the construction waste filtered by the first toothed screen unit to a third particle size or less; And
Further comprising an aggregate material screen unit for selecting aggregate material having a third particle size or less from the construction waste crushed by the construction waste disintegration unit and discharging the aggregate material to the second discharge conveyor.
9. The method of claim 8,
The waste treatment unit includes:
Further comprising a first blower for removing foreign substances such as vinyl, wood chips, etc. from the aggregate material discharged from the screen of the aggregate material screen to the second discharge conveyor.
9. The method of claim 8,
Wherein the first particle size is 100 mm.
9. The method of claim 8,
And the third grain size is 27 mm.
9. The method of claim 8,
The waste treatment unit includes:
A magnetic force sorting device for sorting magnetic pieces of iron pieces in the first and second particle sizes selected from the first toothed screen portions; And
Wherein the slabs of the second granular size or less are discharged to the first discharge conveyor at a fraction of the first granular size or less left behind by removing the iron pieces through the magnetic separator, And a second soil screen unit for filtering the discharged construction waste mixed with the aggregate material screen unit.
13. The method of claim 12,
The waste treatment unit includes:
Further comprising a second blower for removing foreign matter such as vinyl, wood chips, etc. from the construction waste discharged from the screen portion of the second toe to the screen portion of the aggregate raw material.
13. The method of claim 12,
And the second grain size is 20 mm.
9. The method of claim 8,
The waste treatment unit includes:
And a conveying conveyor for conveying the construction waste filtered by the aggregate material screen to the construction waste disposal unit.
8. The method of claim 7,
The aggregate-
The washing sand having a particle size less than the fourth particle size is selected and discharged to the fourth discharge conveyor while the washing sand having the fourth particle size or less is separated and left for the concrete, And a first washing sand screen unit for discharging the aggregate to the third discharge conveyor.
17. The method of claim 16,
And the fourth particle size is 5 mm.
17. The method of claim 16,
The aggregate-
And a aggregate material hopper for supplying the aggregate material from the outside to the first washing sand screen portion.
17. The method of claim 16,
The aggregate-
A first wet separator for removing foreign substances such as vinyl, wood chips and the like using the specific gravity difference in the washing sand sorted and separated from the first washing sand screen; And
Further comprising a washing and dewatering device for washing and dewatering water sprayed on the washed sand removed from the first wet separator and for discharging washed and dewatered washing sand to the fourth discharge conveyor Waste disposal facility.
20. The method of claim 19,
The aggregate-
An aggregate material crushing unit for crushing coarse aggregate for concrete filtered by the first washing sand screen unit;
A second wet separator for removing impurities such as vinyl and wood chips from the coarse aggregate for concrete crushed by the aggregate material crushing unit using the specific gravity difference; And
The washing sand having a fourth particle size or less is selected and discharged to the first wet separator while water is sprayed on the coarse aggregate for concrete left after the foreign matter is removed from the second wet separator, Further comprising a third washing sand screen unit for discharging coarse aggregate for concrete separated and left to the third discharge conveyor.
21. The method of claim 20,
The aggregate raw material crushing section
And an impact crusher for crushing the coarse aggregate for concrete and separating the sand attached to the coarse aggregate for concrete.
20. The method of claim 19,
The aggregate-
And a wastewater treatment unit for recovering the washing sand mixed with the wastewater discharged from the washing and dewatering unit and supplying the collected sand to the first wet separator.

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