JP3284398B2 - Empty can processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an empty can processing system, in which a steel material and an aluminum material are separately taken out of a compression-molded product obtained by compression-molding a steel can for beverages such as coffee and juice, and can be reused. Things.

[0002]

2. Description of the Related Art Steel cans are often used for cans for beverages such as coffee and juice, and the lid portion of the steel can is usually formed of an aluminum material. Conventionally, such a steel can is bulky as it is, like an aluminum can, and is crushed by a press or the like and discarded.

[0003]

In the conventional processing of a steel can which has been compression-molded by a press or the like as described above, it is difficult to separately recover steel and aluminum as constituent materials. However, there is a problem that it is not possible to take the form.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to easily recover and reuse steel materials and aluminum materials individually from compression-formed steel cans. It aims at providing an empty can processing system that can construct a resource recycling system.

[0005]

The empty can processing system according to the present invention is configured as follows.

(1) An empty can treatment system for separately extracting and reusing a steel material and an aluminum material from a compression molded product obtained by compression molding a steel can, wherein the crusher crushes the compression molded product of the steel can. Heating means for heating the crushed individual pieces of the can at a temperature of 350 ° C. to 450 ° C., and forming each piece of the steel material and the aluminum material after heating in a coarse shape, and then further increasing the specific gravity. The apparatus was provided with a two-stage granulator for producing high-granular pellets, and a sorting means for sorting and sorting the granular pellets into steel pellets and aluminum pellets.

[0007] In the system of (2) above (1), heating means and so is the rotary kiln rotary.

[0008]

( 3 ) The system according to the above (1) or (2), further comprising a vibrating screen for extracting powdery steel material from steel pellets.

[0010]

FIG. 1 is a block diagram showing the configuration of an empty can processing system according to one embodiment of the present invention. A steel material and an aluminum material are separately taken out from a compression molded product obtained by compression molding a steel can. Fig. 3 shows a plant configuration that can be reused.

In FIG. 1, reference numeral 1 denotes a charging hopper for charging a compression molded product of a steel can, 2 denotes an impact crusher for crushing the input compression molded product, and 3 denotes a fragment of an individual can crushed by the impact crusher 2. Is a rotary rotary kiln (heating means) for heating at a predetermined temperature.

Reference numeral 4 denotes a coarse granulator for turning each piece of the steel material and the aluminum material after the heat treatment by the rotary kiln 3 into coarse granular pellets, and 5 denotes granular pellets having a higher specific gravity (density). 6 is a magnetic separator (sorting means) for sorting and dispersing granular pellets into steel pellets and aluminum pellets, 7 is a container for accommodating aluminum pellets, 8 is a powdery material from steel pellets. A vibrating screen for removing the steel material, a container 9 for storing steel pellets, and a container 10 for storing powdery steel material.

Reference numeral 11 denotes a secondary combustion furnace provided in the rotary kiln 3. The secondary combustion furnace 11 has an exhaust gas cooling device 12, a cyclone 13, a dust collector 14, and an exhaust fan 1.
5 and the silencer 16 are sequentially connected.

Next, the processing flow of the above system will be described in detail with reference to the process chart of FIG.

First, a compression molded product of a steel can put into the impact crusher 2 from the hopper 1 is finely crushed here (S1) and sent to the rotary kiln 3. Each piece of the steel can sent into the rotary kiln 3 is heated at a temperature of 350 to 450 ° C. (S2), and the paint adhered to the can surface is removed by combustion.

Each piece of the steel can heated by the rotary kiln 3 is separated into a steel portion and an aluminum portion by two-stage granulators 4 and 5, and formed into high-density granular pellets. .
That is, first, a coarse granule 4 is formed into a coarse coarse shape (S3), and thereafter, a pellet having higher specific gravity is formed by the granulator 5 (S4). Next, the granulated pellets are guided to the magnetic separator 6, where the steel pellets of the steel material and the aluminum pellets of the aluminum material are sorted and sorted according to the presence or absence of magnetism (S5).

The aluminum pellets sorted by the magnetic separator 6 are stored in a container 7, and the steel pellets are sent to a vibrating screen 8 to separate a powdery steel material (S6). The powdered steel material is stored in the container 10.

In this way, the steel material and the aluminum material can be easily recovered individually from the compression-molded steel can, and can be reused. Therefore, it is possible to construct a recycling system, which is useful.

It is also possible to compress the collected pellets into a solid, which can be easily transported and stored, and can be used for a wide range of applications.

On the other hand, the combustion products (exhaust gas) in the secondary combustion furnace 11 provided in the rotary kiln 3 are cooled by the cooling device 12, and are removed through the cyclone 13 and the dust collector 14. Released during. At this time, generation of noise is suppressed by the silencer 16.

In the above embodiment, since each piece of the crushed steel can is heated by the rotary kiln 3 at a relatively low temperature of 350 ° C. to 450 ° C., the aluminum portion is not melted and separated here. The quality of the recovered aluminum material is good.

Although not shown, each fragment crushed by the crusher 2 may be further finely crushed by a shredder and sent to the rotary kiln 3, in which case the production efficiency can be further increased.

[0023]

As described above, according to the present invention, a steel material and an aluminum material can be easily recovered individually from a compression-molded steel can and reused, and a recycling system can be constructed. There is an effect that it becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an empty can processing system according to an embodiment of the present invention.

FIG. 2 is a process chart showing a processing flow of the system of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input hopper 2 Impact crusher 3 Rotary kiln (heating means) 4 Rough granulator 5 Granulator 6 Magnetic separator (sorting means) 8 Vibration screen 11 Secondary combustion furnace 12 Exhaust gas cooling device

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-172875 (JP, A) JP-A-7-51659 (JP, A) JP-A-8-49023 (JP, A) JP-A-8- 311569 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B09B 5/00 B09B 3/00 C22B 1/00-1/26 C22B 7/00

Claims (3)

(57) [Claims] 1. An empty can treatment system for separately removing a steel material and an aluminum material from a compression molded product obtained by compression molding a steel can and reusing the material, and a crusher for crushing the compression molded product of the steel can. Heating means for heating the crushed individual can pieces at a temperature of 350 ° C. to 450 ° C .; and forming each piece of the steel material and the aluminum material after heating in a coarse shape, and then having a higher specific gravity. An empty can processing system, comprising: a two-stage granulator for forming granular pellets; and a sorting means for sorting and sorting the granular pellets into steel pellets and aluminum pellets. 2. The empty can processing system according to claim 1, wherein the heating means is a rotary rotary kiln. 3. An empty can processing system according to claim 1, further comprising a vibrating screen for extracting granular steel material from steel pellets.