JPH11319791A - Method and device for making glass cullet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass cullet manufacturing method for processing labels simultaneously with removing corners of crushed glass cullets and manufacturing a glass cullet product without being annoyed with malodor or the like. SOLUTION: A manufacturing method is constituted of a dry crushing process 1 of crushing waste glass such as glass bottles and the like into given grain sizes, a circulating process of forcibly circulating pulp as a mixture of glass cullets crushed in the dry crushing process with water along a circulating water tank 31, a circulating pump 35, pipings 36, 37, 39 and 41, the circulating water tank 31 and the like by the circulating pump 35, and a separating and classifying processes 44, 43 and 49 of separating and classifying glass cullet products out of the pump circulated in the circulating process. Corners of glass cullets are removed in the circulating process, and also labels adhered to the glass cullets are peeled off and pulverized. At this time, liquid such as drinking water adhered to the glass cullets is dissolved in water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a glass cullet from waste glass such as a glass bottle, and an apparatus for producing a glass cullet used for carrying out the method.

[0002]

2. Description of the Related Art Glass bottles currently produced in Japan accounted for about 2 million tons in 1995, of which 60
Up to 70% are recyclable bottles, but the amount collected by bin manufacturers and reused as return bins or crushed and recycled as cullet accounts for about 5% of the total production.
At 0%, about 1 million tons or more are landfilled and disposed of.

[0003] Under such circumstances, the "Law Concerning Separation Collection and Recycling of Containers and Packaging", the so-called Containers and Packaging Recycling Law, came into effect in April 1997, and glass bottles and glass cullets are also included in designated items. ing. Therefore, municipalities are collecting waste separately, and bottle manufacturers are working to improve the recycling rate.
The utilization rate of cullet used for the production of glass bottles is also limited, and it cannot be digested by the reproduction of glass bottles and the recycling of colored pavement on concrete roads and the surface material of concrete blocks, which has been attempted in the past. The development of other high-volume applications is desired.

Under these circumstances, various approaches have been taken to develop uses of glass cullet. Among them, construction materials such as road pavement materials, backfill materials, asphalt aggregates, sand for paving blocks, and the like. Alternatively, if it can be used as a partial substitute for crushed stone, it can be reused in a relatively large amount. Therefore, the development of glass cullet in this field is being attempted at a rapid pace.

In order to use the glass cullet in such applications, the particle size distribution of the glass cullet must be within the respective specified ranges. However, the price is lower than that of commercially available building materials. It is also desirable that it can be easily obtained from a short distance, and that it is safe without any corners even if it is directly touched by hand, has no odor, is hygienic, and is easy to handle.
Etc. are required. In order to satisfy such demands, a large-scale glass cullet manufacturing device is provided in a glass bottle factory, a garbage disposal site, and the like, but such a large-scale glass cullet manufacturing device is limited in area,
The above requirements are not always satisfied because of the high equipment cost and the need for large-capacity power.

[0006] Therefore, a portable, small-sized, small-capacity glass cullet manufacturing apparatus having mobility has been developed and is being put to practical use. As shown in FIG. 3 with the operation, this simplified glass cullet manufacturing apparatus schematically includes a loading hopper 60 in which a waste glass bottle is placed.
Primary crusher 62 for crushing waste glass bottles, trommel 63 for sieving crushed glass crushed material, secondary crusher 64 for crushing glass crushed material having passed through trommel 63 into glass cullet, crushing by secondary crusher 64 A cornering machine 65 for rounding corners of the cut glass cullet, a vibrating screen 66 for classifying the rounded glass cullet, and a separator 6 for separating a label or a crown attached to a waste glass bottle.
7 and the like. In addition, this simple glass cullet manufacturing apparatus is provided with a dust collecting apparatus because it is a dry type.

[0007]

As described above, the conventional simple glass cullet manufacturing apparatus can be said to satisfy the above-mentioned requirements for the time being because it is small, small-capacity and mobile. However, some points need to be improved. For example, the collected waste glass bottles are generally affixed with a label, but since the simple glass cullet manufacturing apparatus is a dry type, a separate processing step is required to remove the label, which is expensive. In addition, drinks such as drinks and water may remain in the collected waste glass bottles, but these liquids are spoiled and emit a bad smell when crushed, which is not always sanitary. Furthermore, since dust is generated when the waste glass bottle is crushed, a dust collector provided with a back filter or the like must be provided.
I hate to enlarge the equipment.

An object of the present invention is to provide a method and an apparatus for manufacturing a glass cullet in which the above-mentioned problems or disadvantages are solved, and more specifically, a method for removing a corner of a crushed glass cullet. Processing can be done at the same time,
It is another object of the present invention to provide a glass cullet manufacturing method and a glass cullet manufacturing apparatus used for implementing the method, which can manufacture a sanitary glass cullet without being bothered by a bad smell or the like. Another object of the present invention is to provide a method for manufacturing a glass cullet which does not require a back filter or the like in addition to the above objects.

[0009]

SUMMARY OF THE INVENTION The object of the present invention is to crush a collected waste glass bottle to a predetermined particle size, and to circulate and classify the crushed glass cullet in a wet manner. Is achieved by That is, in order to achieve the above object, the present invention crushes waste glass such as a glass bottle into cullets of a predetermined particle size, a crushing process, and a mixture of glass cullet crushed in the crushing process and treated water. A circulating water tank, a circulating pump, a pipeline, a circulating water tank and the like, and a separation treatment for separating and classifying glass cullet from the pulp circulated in the circulation treatment step. And a processing step. The invention according to claim 2 performs the crushing process according to claim 1 in a dry manner, and the invention according to claim 3 performs the crushing process according to claim 2 in a dry process. It is configured to suck the flying dust together with the air and discharge it to the circulating water tank used in the circulating treatment step. The invention according to claim 4 is a glass cullet manufacturing apparatus for manufacturing glass cullet from waste glass, such as a glass bottle, comprising a crushing unit, a wet circulation classifying unit, and a product storage unit, The crushing device section includes a dry crusher for crushing waste glass, and a classifier for classifying the glass cullet crushed by the dry crusher, and the sieve of the classifier is returned to the crusher. The wet circulation classifier is configured, a circulating water tank in which the glass cullet obtained in the crusher and the treated water are put, a circulation pump that circulates the pulp composed of the glass cullet and the treated water, and pulp. A classifier for separating the glass cullet, and a circulating water tank, a circulating pump, a pipe line that fluidly connects the classifier and the like, and the circulating pump is operated and provided in the pipe line. The pulp is circulated between the circulating water tank, the circulating pump, the pipeline, the circulating water tank, and the like, or the circulating water tank, the circulating pump, the pipeline, the classifier, It is configured to circulate between water tanks. According to a fifth aspect of the present invention, the classification device according to the fourth aspect is configured by a sieve for separating glass cullet from pulp, and a liquid cyclone for separating finely divided glass cullet, label pieces and the like. .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to an example in which three types of glass cullets having a particle size of 20 mm to 5 mm, 5 mm to 2 mm, and 2 mm or less are manufactured from waste glass bottles. The glass cullet of 2 mm or less is discarded together with the label or the like attached to the glass bottle, as described later. The apparatus for manufacturing a glass cullet according to the present invention is schematically shown in FIGS.
As shown in FIG. 2, a crushing device 1 for crushing a glass bottle, a wet circulation classifier 30 for circulating crushed glass cullet and water, and a product storage 50 for storing classified products. Has become. Then, as will be described in detail later, in the wet circulation classifier 30, the crushed glass cullet and water are circulated, and the cornered glass cullet is cut off and classified to a predetermined particle size. Has become.

The crushing device section 1 is a feeding hopper 2 in which waste glass bottles are stored, for example, a primary crusher 4 comprising a hammer crusher, an electromagnetic feeder 5, and the coarse glass crushed by the primary crusher 4 is reduced to 20 mm or less again. Secondary crusher 7 for crushing, vibrating sieve or trommel 9 having a sieve mesh of 20 mm,
It consists of a storage bin 11 under the sieve. These are arranged in a substantially horizontal direction, and the waste glass bottles supplied from the charging hopper 2 are supplied to the primary crusher 4 by a first charging conveyor 3 having a conventionally well-known form, and the primary glass crusher 4 is further provided with a primary glass crusher. The crushed coarse glass cullet is supplied to a secondary crusher 7 through a second feed conveyor 6 through an electromagnetic feeder 5. The glass cullet crushed in the secondary crusher 7 is similarly supplied to the vibrating sieve 9 by a conventionally well-known third charging conveyor 8. The vibrating sieve 9 and the secondary crusher 7 are connected by a return conveyor on the sieve, that is, a return conveyor 10. Thereby, the coarse glass cullet having a particle size of 20 mm or more is returned to the secondary crusher 7.
The under-sieve storage bottle 11 is arranged below the trommel 9,
This storage bin 11 under the sieve is connected to the circulating water tank 31 of the circulating classifier 30 by the supply conveyor 12. As a result, only the glass cullet crushed to a size of 20 mm or less is supplied to the next wet circulation classifier 30.

Although only schematically shown in FIG. 1, a dust collector 20 is provided in the crushing unit 1 described above. This dust collecting device 20 is composed of a plurality of hood bodies 21, 21 ', 21 "shaped so as to cover the crushing unit 1. The hood bodies 21, 21', 2 '
The intake pipe 23 connecting the 1 "is open to the inside of the circulating water tank 31 of the wet circulation classifier 30 through the exhaust fan 24. Therefore, the exhaust fan 24 interposed in the intake pipe 23. Is started, dust and fine glass cullet scattered from the crushing unit 1 are sucked through the hood bodies 21, 21 ′ and 21 ″, discharged into the water of the circulating water tank 31, and captured by the water. Become. The captured glass cullet is collected as fine glass cullets of 2 mm or less that are scattered as described later.

The wet circulating classifier 30 includes a circulating water tank 31.
It has. The bottom wall of the circulating water tank 31 is inclined toward the circulating pump 35. Due to this inclination, the glass cullet and the water are efficiently sucked into the circulation pump 35. The wet circulation classifier 30 further includes a liquid cyclone 43, a first vibrating sieve 44, a second vibrating sieve 49, and the like above the circulating water tank 31. And
The suction pipe 34 of the circulation pump 35 is connected to the circulation water tank 31 with a valve 33 interposed. The discharge pipe 36 of the circulation pump 35 includes first, second, and third circulation pipes 37, 39.
And 41. The first circulation pipe 37 is provided with a first valve 38, the second circulation pipe 39 is provided with a second valve 40, and the third circulation pipe 41 is provided with a third valve 42. Have been. The first circulation pipe 37 is provided in the circulation water tank 31, and the second circulation pipe 39 is provided in the first vibrating sieve 44.
The third circulation pipes 41 are connected to the liquid cyclones 43, respectively. Therefore, by appropriately opening and closing the valve 33 and the first to third valves 38, 40 and 42, the pulp which is a mixed fluid of glass cullet and water is circulated between the circulating water tanks 31 by the first circulating pipe 37. , And selectively supplied to the first vibrating sieve 44 or the liquid cyclone 43 for circulation. The drain pipe 41 ′ branched from the third circulation pipe 41 has a drain valve 4.
2 ′ is provided, and a drain pipe 3 is provided at the bottom of the circulating water tank 31.
2 are provided.

The first vibrating sieve 44 has an upper sieve mesh of 5 mm.
The lower one is composed of a 2 mm two-stage sieve. A first product transport conveyor 45 is provided corresponding to the upper screen, and a second product transport conveyor 46 is provided corresponding to the lower screen. First vibrating sieve 44
Is returned to the circulating water tank 31 via a chute. The underflow of the hydrocyclone 43 is connected to the vibrating sieve 44 and
The overflow pipe 48 is connected to a second vibrating sieve 49, and the top of the sieve is connected to a waste transport conveyor 47. The under sieve is returned to the circulating water tank 31 via a chute. In addition, in FIG. 1, the code | symbol W has shown the water supply pipe, and V has shown the water supply valve, respectively.

In the present embodiment, the product storage section 50 includes a first storage bit 51 for storing a glass cullet having a particle size of 5 to 2 mm, and a second storage bit 51 for storing a glass cullet having a particle size of 20 to 5 mm. It comprises a storage bit 52 and a third storage bit 53 for storing waste such as glass cullets and labels of 2 mm or less. The end of the second product transport 46 is connected to the first storage bit 51 described above, the end of the first product transport 45 is connected to the second storage bit 52, and the third storage bit 53 is connected to the third storage bit 53. Are connected to the end portions of the waste transport conveyor 47, respectively.

Next, a method of manufacturing a glass cullet using the above-described apparatus for manufacturing a glass cullet will be described with reference to FIG. The crushing unit 1 is started. Then, the waste glass bottle in the input hopper 2 is supplied to the primary and secondary crushers 4, 7 by the first and second input conveyors 3, 6, and
And it is crushed. The crushed glass cullet is the third
Is supplied to the vibrating sieve 9 by the feeding conveyor 8. In the vibrating sieve 9, glass cullet having a particle size of 20 mm or less is discharged to a storage bin 11 below the sieve. The glass cullet of 20 mm or more is returned to the secondary crusher 7 by the return conveyor 10. In this way, the waste glass bottle is crushed into glass cullets of 20 mm or less and stored in the under-sieving storage bin 11.

As described above, when a glass cullet of 20 mm or less is obtained, the exhaust fan 24 of the dust collecting device 20 is started. Then, the dust scattered around is sucked into the hood bodies 21, 21 ', 21 "together with the air, and is discharged into the water in the circulating water tank 31. The dust is captured by the water, and becomes fine as described later. Processed with glass cullet.

In the wet circulation classifier 30, a predetermined amount of treated water is supplied from a water supply pipe W to a circulation water tank 31. Further, a predetermined amount of glass cullet to be processed in one batch is supplied from the under-sieve storage bin 11. First, processing such as de-squaring and label peeling is performed. That is, the valve 33 and the first valve 38 are opened, and the second and third valves 40 and 42 and the drain valve 42 'are closed. The circulation pump 35 is started. Then, a mixture of water and glass cullet, that is, pulp having a predetermined concentration, is supplied to the circulating water tank 31, the circulating pump 35, and the discharge pipe 3
6. Circulate between the branch pipe 37 and the circulating water tank 31. During the circulation for a predetermined time, for example, three minutes, the glass cullet is subjected to the effects of mutual frictional contact, collision, and grinding in the circulation pump 35, the discharge pipe 36, the branch pipe 37 and the like. Thereby, the corners of the glass cullet generated when crushed are rounded. Further, the label attached to the glass cullet is peeled off and miniaturized. Liquid such as drinking water attached to the glass cullet dissolves in water.

Next, a classification process is performed. First valve 38
Is closed, and the second valve 40 is opened. Then, the recycled pulp is supplied to the first vibrating sieve 44. In the first vibrating sieve 44, it is classified as is well known,
The upper sieve having a sieve of 5 mm is supplied to the second product storage bit 52 by the first product transport conveyor 45 as glass cullet having a particle size of 20 to 5 mm. 2mm sieve
Is supplied to the first product storage bit 51 by the second product transport conveyor 46 as a glass cullet having a particle size of 5 to 2 mm. The under sieve is returned to the circulating water tank 31. The classification operation is performed for a predetermined time, for example, one minute.
As a result, a glass cullet classified to a predetermined particle size is obtained.

Finally, a waste collection process is performed. That is, the first and second valves 38 and 40 are closed, and the third valve 42 is opened to drive the circulation pump 35 for a predetermined time. Then, the remaining pulp classified and recovered is supplied to the liquid cyclone 43. In the hydrocyclone 43, the underflow is separated as is conventionally known, and the underflow is supplied to a first vibrating sieve 44 and classified again. This separates and collects the glass cullet that has not been collected during the classification process. The overflow of the hydrocyclone 43 is supplied to a second vibrating sieve 49 by an overflow pipe 48. In the second vibrating sieve 49, fine particles such as a glass cullet of 2 mm or less and a finely divided label are separated,
Then, the waste is conveyed to the third storage bit 53 by the waste transport conveyor 47. This process is also performed for a predetermined time.

After the above series of processing is completed, the glass cullet to be processed next stored in the storage bin 11 under the sieve is put into the circulating water tank 31, and as described above, the glass cullet is
Perform label peeling, classification, and waste collection. Hereinafter, batch processing is performed in the same manner. If the amount of the treated water decreases during the batch processing, the water is supplied from the water supply pipe W. When the contamination of the treated water has progressed, the first, second and third valves 42 are set to 38, 40 and 4 after the glass cullet, the label and the like are collected as described above.
2 is closed, the valve 33 and the drain valve 42 'are opened, and the circulation pump 35 is operated. Then, the treated water in the circulating water tank 31 is supplied to the discharge pipe 36 and the drain pipe 4 of the circulating pump 35.
The wastewater is discharged to a predetermined wastewater treatment facility through 1 '. As described above, a predetermined amount of treated water is supplied from the water supply pipe W to the circulating water tank 31.

It is clear that the present invention is not limited to the above embodiment. For example, it is clear that glassware other than waste glass bottles, as well as pottery, can be treated as well. Therefore, the term glass cullet includes crushed pieces obtained by crushing pottery. It is also clear that the particle size of the glass cullet is not limited to the embodiment. Further, the present invention can be carried out by using another classifier, such as a trommel or a screen, instead of the vibrating sieve. In the description of the operation of the above embodiment, the processes such as de-squaring, label peeling, classification, and waste collection are performed manually. However, one process is completed in a predetermined cycle. It is clear that automatic driving can be performed as described above. Further, the dust collector is expensive, but can be implemented by a dry dust collector provided with a back filter or the like.

In the above embodiment, the crushing unit 1
Has been described as being fixed, but it is clear that it can be configured as portable. At this time, the wet circulation classification device 30 can also be configured to be movable, but since the wet circulation classification device 30 is relatively large in size, it is desirable to use a center system that is fixed to the center. When implemented in this manner, a plurality of crusher units 1 can be applied to one wet circulating classifier unit 30, and a plurality of crusher units 1 are mounted on respective trucks and the like, and a waste glass bottle is mounted. Then, a relatively bulky glass bottle is crushed, reduced in volume, and transported to the wet circulation classification device 30 for wet circulation classification. Thereby, a glass cullet can be obtained relatively inexpensively.

[0024]

As described above, according to the present invention, pulp, which is a mixture of glass cullet crushed in the crushing process and treated water, is passed through a circulating water tank, a circulating pump, a pipeline, a circulating water tank and the like. Since the circulating process is performed forcibly circulating, the corners of the glass cullet generated in the crushing process are rounded when the circulating process is performed, and the label attached to the glass cullet is peeled and refined. The odorous liquid such as drinking water adhering to the glass cullet dissolves in the water. Therefore, according to the present invention, label processing can be performed at the same time when the corners of the crushed glass cullet are removed, and a sanitary glass cullet can be manufactured without suffering from a bad smell or the like. Is obtained. Also, since the present invention has a separation treatment step, the corners are rounded and safe, and the label,
The effect of obtaining a high-quality glass cullet having a predetermined particle size from which drinking water and the like have been removed is also obtained. According to another invention, since the crushing process is configured to be performed in a dry process, there is no need for water treatment as compared with a case where the process is performed in a wet process, and the effect of crushing a waste glass bottle at low cost is added. You. According to yet another aspect of the invention, when the crushing process is performed in a dry process, the scattered dust is sucked together with air and discharged to a circulating water tank used in the circulating process. Without using expensive equipment such as a back filter
An effect that can be processed at low cost is obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration and an operation of the embodiment of the present invention in a flowchart at the same time.

FIG. 3 is a diagram illustrating a configuration and an operation of a conventional example at the same time in a flowchart.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Crusher part 4 Primary crusher 7 Secondary crusher 9 Vibrating sieve 20 Dust collector 23 Suction pipe 30 Wet circulation classification device part 31 Circulation water tank 35 Circulation pump 36 Discharge pipe 37 First circulation pipe 38 First valve 39 second circulation pipe 40 second valve 41 third circulation pipe 42 third valve 43 hydrocyclone 44 first vibrating sieve 49 first vibrating sieve 50 product storage

Claims (5)

[Claims] 1. A crushing step of crushing waste glass such as a glass bottle into a cullet having a predetermined particle size, and a pulp which is a mixture of the glass cullet crushed in the crushing step and treated water is supplied to a circulating water tank. A circulating pump, a pipeline, a circulating treatment step of forcibly circulating between circulating water tanks, and the like, comprising a separation and classification treatment step of separating and classifying glass cullet from the pulp circulated in the circulating treatment step,
Manufacturing method of glass cullet. 2. A method for producing glass cullet, wherein the crushing treatment step according to claim 1 is performed in a dry manner. 3. A method for producing a glass cullet, wherein, when the crushing treatment step according to claim 2 is performed in a dry manner, flying dust is sucked together with air and discharged into a circulating water tank used in the circulation treatment step. 4. A crusher unit, a wet circulation classifier unit,
A glass cullet manufacturing device for producing glass cullet from waste glass such as a glass bottle, comprising a product storage unit, wherein the crushing unit is a dry crusher for crushing waste glass and crushed by the dry crusher. A classifier for classifying the crushed glass cullet, and the sieve of the classifier is configured to be returned to the crusher, and the wet circulation classifier is a glass cullet obtained by the crusher. And a circulating pump for circulating pulp composed of glass cullet and treated water, a classification device for separating glass cullet from pulp, and a circulating water tank, a circulation pump, a classifier, etc. By operating the circulating pump, and by appropriately opening and closing a valve provided in the pipeline, the pulp is That it is configured to circulate between the circulation water tank, the circulation pump, the pipeline, the circulation water tank, or the like, or to circulate between the circulation water tank, the circulation pump, the pipeline, the classifier, the circulation water tank, and the like. Characteristic glass cullet manufacturing equipment. 5. An apparatus for producing glass cullet, wherein the classification apparatus according to claim 4 comprises a sieve for separating glass cullet from pulp, and a liquid cyclone for separating finely divided glass cullet and label pieces.