KR20200005699A - Grinding method of waste tires and waste syntheticresin - Google Patents

Abstract

The present invention relates to a waste rubber and waste synthetic resin pulverizing method which pulverizes collected waste rubber and waste synthetic resin to recycle the same. The present invention comprises: a process of selecting received waste synthetic resin and waste rubber and cutting the same to 30-50 mm or less in a cutting machine (2); a process of finely pulverizing the waste synthetic resin and the waste rubber cut in the previous process to 3 mm for less in a pulverizing machine (4); a process of passing the finely pulverized waste synthetic resin and the waste rubber through a filter moving by constant vibration, selecting only raw materials pulverized to 3 mm or less, and putting raw materials larger than the selected size to a pulverizing process again; a process of putting the selected raw materials of 3 mm or less into a tank of a vacuum state, freezing the raw materials with a refrigerant of -100 to 200°C or less produced by a high pressure cooler (9), and then pulverizing the raw materials to powder of #20 or less in a mill type screw mixer installed in the lower part of the tank while stirring the same slowly; a process of drying the pulverized raw materials in a dryer (11) of a vacuum state to removing moisture from the same; a process of putting the pulverized raw materials into a centrifugal separator (13) and firstly classifying the same according to the characteristics of the specific gravity of each particle; a process of secondly classifying the firstly classified pulverized raw materials according to the characteristics of the specific gravity of each particle by using static electricity; and a process of packing the secondly classified pulverized raw materials.

Description

Grinding method of waste tires and waste syntheticresin

The present invention is to divide the waste rubber and waste synthetic resin powder to powder them in order to recycle the received waste rubber and waste synthetic resin

It is about how to speak

Due to the development of the industry, a lot of wastes are generated in each field.

It is investing a lot of development cost in ward

For example, in the case of waste rubber and waste synthetic resins, a recycling apparatus has been developed and used to recycle and recycle them.

Easier and more efficient materials related to the recycling of waste synthetic resins or tires that are difficult to recycle such as vinyl and waste nets

Development of living methods is very poor.

In other words, waste tires generated by increasing automobile penetration rate, waste vinyl generated in rural areas, nets generated in fishing villages, etc.

Is difficult to process due to its large volume, especially for waste vinyl used in plastic houses and waste nets generated in fishing villages.

There is a lot of soil and small impurities in the collection process as well as the use process.

It is

Therefore, in order to recycle waste vinyl generated in a plastic house or waste net generated in a fishing village,

Since the soil and small impurities in the water had to be removed, it is necessary to clean it.

And additional operations such as sorting and cutting to treat waste nets are required.

Due to the high cost of life, the added value falls and they are avoiding their recovery.

As a result, unrecoverable waste cannot be stored in the stockyard for a long time, so it is incinerated.

Air pollution due to the same substance is released into the atmosphere

On the other hand, in the case of PET bottles widely used as beverage containers, high-quality synthetic resins are used.

Since there is no way to regenerate with a machine, the recovered PET bottles are crushed finely, and then,

Chips are mixed with raw materials, resulting in waste of high quality resources. In addition, in order to recycle the collected recycled materials, workers sort and store them according to the type of resin,

Since they had to be dissolved when they were collected, the cost of recycling was excessive.

It needed a lot of space to manage, so it had to have a large factory site.

The present invention has been made to solve such a conventional problem, it is to use the recycled goods received when molding the original product.

Its purpose is to make it regenerate in powder or granule form so that it can be used in the same way as the raw materials.

Another object of the present invention is to automatically sort them by type in the process of discharging in a state in which various kinds of synthetic resins are mixed and powdered

To be able to classify

According to the aspect of the present invention for achieving the above object, the waste plastics and waste rubber stocked in the cut to 30-50mm or less

The step of pulverizing finely pulverized waste synthetic resin and waste rubber cut in the process to 3mm or less, the finely pulverized waste synthesis

Resin and waste rubber are passed through by constant vibration to select only raw materials ground to 3mm or less.

Re-putting into the grinding process, and the raw material sorted to 3mm or less is put into the vacuum tank and produced by the high pressure cooler.

The millstone-type scrubber installed in the lower part of the tank while freezing the raw material with the refrigerant of -100-200 ℃ or lower and slowly stirring

Process to powder to powder # 20 or less in a flow type mixer, and dry the powdered raw material in a vacuum dryer to remove moisture

Process and the process of first classifying the powdered raw material into the centrifugal sorter according to the characteristics of the specific gravity of each particle, and the first classified powder

Secondary classification of raw materials according to the magnetic properties of each particle by using static electricity, and packaging process of powder raw materials classified secondly

There is provided a method of powdering waste rubber and waste synthetic resin, characterized in that made.

As described above, the present invention finely pulverizes the waste synthetic resin and waste rubber, and then sorts them by type to obtain high quality.

The recovery of synthetic resins and rubbers has the effect of reducing the cost of purchasing raw materials.

In addition, the recycling of waste synthetic resins and waste rubber prevents the occurrence of air pollution due to incineration, as well as rehabilitation of them.

As a result, high value added can be created.

Hereinafter, with reference to Figures 1 and 2 showing the present invention as an embodiment in more detail as follows.

1 is a process chart for implementing the present invention and Figure 2 is a flow chart for explaining the manufacturing method of the present invention, the present invention

The waste synthetic resin (PE, PP, polyester, etc.) and the waste rubber received are transported using the transport trolley (1), and then put into the cutter (2).

By cutting the rotary knife to less than 30-50mm (S1)

In the above process, the cut lengths of the waste synthetic resin and the waste rubber are set to be smaller as the thickness is thicker and longer as the thickness is thinner.

Is 50mm or more, the motor is overloaded due to the fine grinding of waste synthetic resin and waste rubber in the subsequent grinding process.

There is an end to the burnout.

The waste synthetic resin and the waste rubber cut in the above process are transferred by a conveying means 3 such as a conveyor belt and put into the grinder 4.

After grinding, finely grind to 3 mm or less (S2)

When the waste synthetic resin and waste rubber are pulverized to 3 mm or more, the powdering efficiency decreases in the process of powdering in a subsequent process.

The waste synthetic resin and waste rubber finely pulverized by the crusher are conveyed by a conveying means 5 such as a conveyor belt.

Only the raw materials ground to 3mm or less can be sorted by putting them in the same type separator (6) and passing them while moving by constant vibration.

(S3)

In the above process, raw materials of 3 mm or more that do not pass through the shredder are put back into the grinding process and regrinded to 3 mm or less.

Thus, the raw material sorted to 3mm or less is introduced into the tank of the high-pressure cooling powder stirrer 8 by using a screw feeder 7.

Powdered, the inside of the tank of the high-pressure cooling powder stirrer is a refrigerant of -100-200 ℃ or less produced by the high-pressure cooler (9)

After freezing the supplied raw materials, the mixture is slowly stirred and passed through a mill-type screw mixer installed at the bottom of the tank.

Thus, a raw material having powder # 20 or less is obtained (S4). When the powder raw material is obtained in the above process, the raw material is transferred using a tubular feeder 10 which maintains a vacuum state, and the dryer 11.

It is supplied to the inside of the and then heated, the powdered raw material is the residue of the refrigerant from the high pressure freezing in the powdering process surface of the raw material

In order to remove the moisture by applying the appropriate heat from the dryer 11 in a vacuum state because it remains in (S5)

The powder raw material from which the moisture is removed by the dryer 11 is transferred using a tubular feeder 12 that maintains a vacuum state.

Injected into the core sorter 13 and primary sorting according to the characteristics of the specific gravity for each particle (S6)

As a result, foreign substances such as metals and paper contained in the powder raw material are removed by the specific gravity difference for each particle.

According to the characteristics of the specific gravity of each particle in the centrifugal sorter 13, the first-class powdered raw material is a tubular feeder for maintaining a vacuum state (1).

4) by the transfer to the interior of the electrostatic secondary sorter (15) and secondary sorting according to the magnetic properties of each particle (S7)

However, if the amount of primary sorted powder raw material is not large enough to be classified by the electrostatic secondary sorter 15, a separate hopper

(16) Collected and stored in the electrostatic type using a tubular feeder (17) that maintains a vacuum state if a certain amount or more

It may be transferred to the inside of the secondary classifier 15 to classify the secondary according to the magnetic properties of the particles.

Thus, the raw materials of waste synthetic resins and waste rubbers, which are classified second by component, are shipped in unit packaging or in separate cycles (18).

If it is stored in a certain amount and packed in a unit it is shipped (S8)

Meanwhile, the secondary sorted synthetic resin may be shipped in powder form, but may be shipped in a granular form through a post-process.

That is, the second sorted waste synthetic resin powder raw material is introduced into the extruder 20 using the screw feeder 19 and then 100-150 ° C.

Apply heat to melt and extrude thinly (S9)

The raw material extruded to a predetermined thickness in the extruder 20 is directly water-cooled or air-cooled in the cooler 21 according to each characteristic.

At the same time, the cooled raw material is cut into lengths of 1-3 mm in the cutter 22 (S10), and then packed in unit weight in the packing machine 23.

It will be possible to ship

Claims (1)

Selected waste synthetic resin and waste rubber to be cut to 30-50mm or less, waste synthetic resin and waste cut in the process
Finely crush the rubber to less than 3mm and move the finely pulverized waste synthetic resin and waste rubber with constant vibration
Selecting only raw materials ground to 3mm or less by overheating and re-putting more raw materials to the grinding process and sorting to 3mm or less
The raw material into a vacuum tank and freeze the raw material with a refrigerant below -100-200 ℃ generated by the high pressure cooler.
Process to powder to powder # 20 or less in a mill-type screw mixer installed in the lower part of the tank with a slow stirring
And drying the powdered raw material in a vacuum dryer to remove moisture, and putting the powdered raw material into a centrifuge.
The primary classification process according to the specific gravity characteristics of each particle and the magnetic properties of each particle by using static electricity.
(D) waste rubbers and waste synthesis, characterized in that the process consists of a secondary sorting process and a packaging process for the secondary sorted powder raw materials.
How to Powder Resin

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