KR20040058559A - wet and dry type Manufacturing method of aggregate and its apparatus for recycling construction waste material - Google Patents

Abstract

PURPOSE: A combination dry and wet process and apparatus for making a recycled aggregate for recycling a construction waste are provided to reduce the treating volume of a water treatment apparatus and to increase the recycling degree of the construction waste. CONSTITUTION: The combination dry and wet process for making a recycled aggregate for recycling a construction waste comprises a dry treating step consisting of pre-treating the construction waste in a determined size, crushing, vibrational selecting and screening the foreign substance and fine powders using a blower(3B,5D,7B) and a plurality of cyclone dust collectors(5B); and a wet treating step consisting of vibrational selecting, blowing and washing, thereby producing the recycled aggregate of 0.3 to 4.75 mm or more continuously.

Description

Wet and dry type manufacturing method of aggregate and its apparatus for recycling construction waste material}

The present invention relates to a method for manufacturing wet and dry combined recycled aggregates for recycling construction wastes and a device thereof, and to producing recycled aggregates using construction wastes by using dry and wet methods for the production of recycled aggregates. The present invention relates to a method and apparatus for producing high-quality aggregates while reducing processing capacity and preventing environmental pollution.

Aggregate refers to materials such as sand and gravel, which are mixed with cement and water to make mortar or concrete. In the past, it was considered as a simple filler mixed with cement paste mainly for economic reasons. It turns out to have a very big impact.

Generally, river aggregates are ideal as construction aggregates, but due to the excessive collection of natural aggregates since the 1980s, due to the seriousness of ecosystem destruction and various regulations in terms of nature protection, coarse aggregates have been discontinued before 1990 and replaced with crushed stone. Fine aggregate is exhausted and poses a great threat to the construction industry.

In the case of fine aggregates, in addition to natural resources, aggregate varieties such as crushed sand have been developed to diversify varieties, but crushed sand has poor granular and fine powder content, land sand has clay content, sea sand has salt content, and mountain sand has soft wind. Overall quality is deteriorated due to cargo.

In response to this, significant progress has been made in the use of crushed sand as a fine aggregate for concrete in foreign countries such as Japan, but in Korea, coarse aggregates have already been used in crushed sand (crushed sand) despite the fact that it is common to use crushed stone (crushed stone). The development or utilization of the system is very poor.

Crushed sand, unlike natural sand, refers to fine aggregates made artificially by crushing rocks with crushers, etc.In Korea, stone powder generated during the production of crushed stones (by-products with a particle diameter of less than 8mm generates about 25-30% of production) In most cases, this was used as a raw material.

Recently, due to the lack of natural fine aggregate, it is difficult to obtain the raw material of the crushed sand, and it is also called the crushed stone having a particle diameter of 15-40 mm.

By the way, the manufacturing process is produced through a number of stages, such as grinding, classification, water treatment, etc., the quality is poor, the quality of the crushed sand produced when the manufacturing system changes even a little, there is a very big difference.

In the manufacturing method of the crushed sand, it is a general method to prepare the crushed sand by rinsing with water after being crushed and classified. Looking at the specific manufacturing equipment, the crusher to the top of the material supply (hopper, feeder), conveyor belts, screens, turbidity treatment facilities, controllers and, in some cases, dust collectors, drying equipment, etc. are required.

In addition, there is a method of manufacturing a crushed sand using construction waste without crushing and crushing the rock, the Republic of Korea Patent Application No. 10-2002-0001560, the composition is divided into the pre-process and the post-process, the pre-process is the raw material input- > 1st shredding-> 1st classification-> submersible-> 2nd shredding-> 2nd classification-> 3rd shredding-> recycled raw material production, and the post-process is recycled raw material input-> 1st classification- > 1st crushing-> 2nd classification-> 2nd crushing and polishing-> 3rd classification-> How to produce the final product (crushed sand), but the process is very complicated to produce it in the field There is a problem in that the industrial utility is very low because of the complex process.

In addition, as described above, the method of manufacturing the crushed sand using rock or construction waste has a washing step in the step, which inevitably requires a large-capacity water treatment process for treating contaminated water and the cost increase and environmental pollution. It has a structural problem such as

The purpose of the present invention for solving the above problems is to use natural resources of rock, but rather to produce recycled aggregates in a wet and dry combined use of construction wastes, which are discharged in large quantities from redevelopment and reconstruction sites, in particular, The first input of construction waste separates foreign matter and fines by dry method, and separates this foreign matter and fine powder by wet method, and can produce high quality aggregates only by low-volume water treatment process. The present invention provides a method for producing sand through construction waste and apparatus for preventing environmental pollution due to wastewater generated by reducing the processing capacity of the water treatment process apparatus required for production of aggregates by wet only.

1 is a schematic diagram of a wet and dry combined recycled aggregate production apparatus of the present invention

<Description of the symbols for the main parts of the drawings>

(1): Feed Hopper (2): Cone Crusher

(3B, 5D, 7B): Blower (3A, 7A): Vibration sorter

(4A, 12): Jet Crusher (Vertical Impact Crusher)

(4B, 5C, 6A, 6B, 6C, 6D, 6E, 7C, 8B, 10B): Conveyor

(5A): Undistributor (5B): Cyclone Dust Collector

(8A): Washing Plant (9): Separation through

(10A): Double Log Washers (11): Sedimentation Basin

When described in detail with reference to the accompanying drawings, the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for eliminating the conventional drawbacks.

Figure 1 shows a schematic diagram of a wet and dry combined recycled aggregate production apparatus of the present invention, the configuration of the present invention in the apparatus for producing recycled aggregate from construction waste,

Feed hopper (1) to which the recycled aggregate pretreated to 40mm or less,

Cone crusher (2) for crushing the recycled aggregate transported to the conveyor (6A),

Vibration sorter (3A) for receiving the recycled aggregate crushed in the crusher through the conveyor (6B) to sort by aggregate size,

A conveyor 6D for transporting recycled aggregate having a size of 5 mm or less classified by the vibrating separator,

A jet crusher (vertical impact crusher) 4A which falls from the end of the vibrator and breaks the recycled aggregate larger than 5 mm and smaller than 15 mm transferred through the conveyor 6E;

A conveyor 4B for supplying the recycled aggregate crushed by the jet crusher 4A to the conveyor 6D;

A conveyor (6C) for re-supplying recycled aggregates larger than 15 mm that are separated from this material and dropped after being blown through the blower (3B) at the end of the vibration separator, to the conveyor (6A),

A fine collector 5A which receives the recycled aggregate from the conveyor 6D and scatters it by using the blower 5D, and a plurality of cyclone dust collectors 5B for collecting fine powder less than 0.3 mm scattered;

A vibrating separator (7A) receiving the recycled aggregate discharged to the lower portion of the fine collector (5A) through a conveyor and sorting it into sizes of 0.3 to 4.75 mm and 4.75 mm or more,

Washing plant (8A) for washing the recycled aggregate of 0.3 ~ 4.75mm size supplied by the lower conveyor (not shown) to fall down through the perforated hole of the vibrating separator vibrating in the vibrating separator and the conveyor ( 8B),

A double log washer 10A which is blown to the blower 7B at the end of the vibrating separator and sorted with this substance and then washed with recycled aggregates of 4.75 mm or more, and a conveyor 8B for discharging it;

It consists of a low volume Separation through (9) and Sedimentation Basin (11) for water treatment of the water used in the washing plant (8A) and the double log washer (10A).

In addition, if necessary, 4.75 mm or more of the recycled aggregates classified by the vibrating separator is again crushed, and the installation configuration further includes a jet crusher 12 and a conveyor 7C to be re-transmitted to the conveyor 6D before the fine collector 5A. can do.

In the method of the present invention configured as described above in the method for producing recycled aggregate from construction waste,

Dry processing step (A) of producing recycled aggregates by pulverizing the construction waste that is pretreated to a predetermined size and then vibrating and classifying this material and fine powder in the recycled aggregates using a blower and a cyclone;

Through the wet processing step (B) of sorting and producing 0.3 ~ 4.75 mm and 4.75 mm or more recycled aggregates by separating the foreign matter and fine powder again by wet washing the recycled aggregate produced in the dry treatment step after washing with vibration and classifying air. It is characterized by a method of producing recycled aggregates.

The dry processing step (A),

Feeding the recycled aggregate pretreated at 40 mm or less into the feed hopper 1 and transporting it to the conveyor 6A;

Crushing the transferred recycled aggregate using a cone crusher (2),

After the above step, the recycled aggregate transported through the conveyor 6B is classified by size through a vibrating separator 3A having a different hole size, and the recycled aggregate having a size of 5 mm or less is installed at the bottom of the vibrator. 6D proceeds to the next step, and recycled aggregates larger than 5 mm and smaller than 15 mm are dropped at the end of the vibrating screen, transferred to the jet crusher 4A through the conveyor 6E, and crushed again, and then the conveyor 4B. Recycled aggregate larger than 15mm is blown through the blower (3B) at the end of the vibrating separator, sorted and then dropped and supplied to the conveyor (6A) through the conveyor (6C) to the cone crusher (2). Re-transmitted to and shred again,

The recycled aggregate having a size of 5 mm or less that passed through the vibrating separator and the jet crusher 4A are recycled and then crushed again by the aggregate 6 in the conveyor 6D and then supplied to the fine collector 5A to the blower 5D. The fine powder less than 0.3 mm scattered by the dust is collected in the cyclone dust collector 5B and then transported and discharged by the conveyor 5C, and the remaining non-spread recycled aggregate is discharged to the lower portion of the fine dust collector 5A and transferred to the conveyor. It is a collection step.

The wet processing step (B),

After being discharged to the lower part of the fine collector 5A in the dry processing step and transferred to the vibrating separator 7A through the conveyor, the recycled aggregate having a size of 0.3 to 4.75 mm vibrates in the vibrating separator and falls downward through the perforated hole of the vibrating separator. To the washing plant (8A) by the conveyor, and recycled aggregates of 4.75 mm or more are blown to the blower (7B) at the end of the vibrating separator to classify the substances, and then drop them to supply them to the double log washer (10A). Steps,

And discharging the recycled aggregate having a size of 0.3 to 4.75 mm supplied in the above step through the conveyor 8B after washing with water in the washing plant 8A.

4.75 mm or more of the recycled aggregate supplied in the above step is transferred to the conveyor (7C) and washed with a double log washer (10A) and discharged through the conveyor (10B),

The water used in the washing plant 8A and the double log washer 10A is treated in a low volume Separation through (9) and Sedimentation Basin (11).

In addition, if necessary, the recycled aggregates of 4.75 mm or more classified by the vibrating separator are crushed again by the jet crusher 12, and the transfer is made to the conveyor 6D prior to the undistribution step.

In addition, the aggregate standard used in the process can be used by changing as necessary.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, the present invention is also possible to use natural resources of rock, but rather to produce recycled aggregates in a wet and dry combination method of construction wastes, which are discharged in large quantities from redevelopment and reconstruction sites, and to increase the recyclability of construction wastes. At the same time, by reducing the capacity of the water treatment process equipment required for the production of aggregates by wet alone, it also reduces the amount of waste water generated during water treatment, thereby preventing environmental pollution and classifying and producing aggregates according to the size of aggregates. It is an expected invention.

Claims (6)

In the method of producing recycled aggregate from construction waste, Dry processing step of crushing the construction waste supplied to a predetermined size and then vibrating and classifying this material and fine powder in the recycled aggregate dry using a blower and a plurality of cyclone dust collectors to produce recycled aggregates (A )Wow, Vibration screening of the recycled aggregate produced in the dry treatment step, blowing and classifying the substance and then washing the wet again by separating the fine powder and this material by wet type to continuously produce recycled aggregate of 0.3 ~ 4.75㎜ and 4.75㎜ or more Method for producing a wet and dry combined recycled aggregate for recycling of construction waste, characterized in that through the processing step (B) to produce a recycled aggregate. The method of claim 1, The dry processing step (A), Feeding the recycled aggregate pretreated at 40 mm or less into the feed hopper 1 and transporting it to the conveyor 6A; Crushing the transferred recycled aggregate using a cone crusher (2), After the above step, the recycled aggregate transported through the conveyor 6B is classified by size through a vibrating separator 3A having a different hole size, and the recycled aggregate having a size of 5 mm or less is installed at the bottom of the vibrator. 6D proceeds to the next step, and recycled aggregates larger than 5 mm and smaller than 15 mm are dropped at the end of the vibrating screen, transferred to the jet crusher 4A through the conveyor 6E, and crushed again, and then the conveyor 4B. Recycled aggregate larger than 15mm is blown through the blower (3B) at the end of the vibrating separator, sorted with this material, and then dropped and supplied to the conveyor (6A) through the conveyor (6C) to the crusher (2). Crushing screening step to be retransmitted to The recycled aggregate having a size of 5 mm or less that passed through the vibrating separator and the jet crusher 4A are recycled and then crushed again by the aggregate 6 in the conveyor 6D and then supplied to the fine collector 5A to the blower 5D. The fine powder less than 0.3 mm scattered by the dust is collected in the cyclone dust collector 5B and then transported and discharged by the conveyor 5C, and the remaining non-spread recycled aggregate is discharged to the lower portion of the fine dust collector 5A and transferred to the conveyor. Method for producing a wet and dry combined recycled aggregate for recycling of construction waste, characterized in that the collection step. The method of claim 1, The wet processing step (B), After being discharged to the lower part of the fine collector 5A in the dry processing step and transferred to the vibrating separator 7A through the conveyor, the recycled aggregate having a size of 0.3 to 4.75 mm vibrates in the vibrating separator and falls downward through the perforated hole of the vibrating separator. To the washing plant (8A) by the conveyor, and recycled aggregates of 4.75 mm or more are blown to the blower (7B) at the end of the vibrating separator to classify the substances, and then drop them to supply them to the double log washer (10A). Steps, And discharging the recycled aggregate having a size of 0.3 to 4.75 mm supplied in the above step through the conveyor 8B after washing with water in the washing plant 8A. 4.75 mm or more of the recycled aggregate supplied in the above step is transferred to the conveyor (7C) and washed with a double log washer (10A) and discharged through the conveyor (10B), The water used in the washing plant (8A) and the double log washer (10A) is treated in a low volume Separation through (9) and Sedimentation Basin (11) to recycle the construction wastes, characterized in that consisting of a water treatment step Method for producing wet and dry combined recycled aggregate for. The method of claim 3, wherein 4.75 mm or more of the recycled aggregate classified by the vibrating separator is again crushed by a separate jet crusher 12, and further comprising the step of re-conveying to the conveyor (6D) before the fine collection step Method for producing wet and dry combined recycled aggregate for recycling. In the apparatus for producing recycled aggregate from construction waste, Feed hopper (1) to which the recycled aggregate pretreated to 40mm or less, Cone crusher (2) for crushing the recycled aggregate transported to the conveyor (6A), Vibration sorter (3A) to receive the recycled aggregate crushed in the crusher through the conveyor (6B) for vibrating selection by aggregate size, A conveyor 6D for transporting recycled aggregate having a size of 5 mm or less classified by the vibrating separator, A jet crusher 4A which falls from the end of the vibrating separator and crushes the recycled aggregate larger than 5 mm and smaller than 15 mm, which is conveyed through the conveyor 6E, A conveyor 4B for supplying the recycled aggregate crushed by the jet crusher 4A to the conveyor 6D; A conveyor (6C) for re-supplying recycled aggregates larger than 15 mm that are dropped after the material is sorted and blown through the blower (3B) at the end of the vibration separator to the conveyor (6A), A fine dust collector 5A which receives the recycled aggregate from the conveyor 6D and scatters it by using the blower 5D, and a cyclone dust collector 5B for collecting fine powder less than 0.3 mm scattered; A vibrating separator (7A) receiving the recycled aggregate discharged to the lower portion of the fine collector (5A) through a conveyor and sorting it into sizes of 0.3 to 4.75 mm and 4.75 mm or more, Washing plant (8A) for washing the recycled aggregate of 0.3 ~ 4.75mm size supplied by the lower conveyor (not shown) to fall to the lower through the perforated hole of the vibrating separator while vibrating in the vibrating separator and a conveyor for discharging it 8B), A double log washer (10A) and a conveyor (8B) for discharging the recycled aggregate of 4.75 mm or more, which is blown to the blower (7B) at the end of the vibrating separator and sorted out the substance and then washed; Wet and dry combined use for the recycling of construction waste, characterized in that the device consisting of a low capacity Separation through (9) and Sedimentation Basin (11) for treating the water used in the washing plant (8A) and double log washer (10A) Apparatus for manufacturing recycled aggregates. The method of claim 5, 4.75 mm or more of the recycled aggregate classified by the vibrating separator is again crushed, and further comprises a jet crusher 12 and a conveyor 7C to be re-transmitted to the conveyor 6D before the fine collector 5A. Apparatus for manufacturing wet and dry combined recycled aggregate for recycling of construction waste.