JP6985672B1 - Recycled material manufacturing equipment, waste specific gravity sorting processing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently recover a material for chemical recycling and a raw material for fuel recycling according to a user of a recycled resource. SOLUTION: This is a method for manufacturing a recycled raw material in which recycled raw materials are sorted and collected according to users of recycled resources from waste containing various kinds of plastics, and the waste is crushed to a size of 60 mm or more. The crushed material is separated into a first floating material suspended in a heavy liquid having a first specific gravity and a first settling material that settles in the first water tank, and the separated first floating material has a size of 50 mm or less. The crushed material is separated into a second suspended material suspended in a liquid having a second specific gravity and a second settled material that settles in the second water tank. The second suspended matter is dehydrated and dried to recover the chemical recycled raw material, and the second sediment is dehydrated and dried to recover the fuel raw material. [Selection diagram] Fig. 1

Description

The present invention relates to a recycling technique for recycling waste.

Wood and metals will rot and rust if left in nature for a long time, but because plastic is a chemically stable substance, it will not decompose even if left in nature. Emissions of general waste including plastics and industrial waste are steadily increasing, and waste treatment has become one of the important environmental problems.

For example, in July 2017, China announced the "Implementation Plan for Reform of Solid Waste Import Control System". Among these, the basic idea is to improve the import control system for solid waste, and to strengthen the collection, utilization, and management of solid waste, and it can be replaced with domestic resources by the end of 2019. It was decided to phase out the import of solid waste.

In this way, the amount of waste stored in Japan is increasing due to import restrictions on waste from Asian countries such as China. If this situation continues, there is a possibility that improper disposal of discharged plastic will occur in each municipality in the future.

Generally, waste is classified into industrial waste and general waste. Industrial waste is classified into about 20 types such as cinders, sludge, waste oil, waste acid, and waste alkali. General waste is defined as "waste other than industrial waste".

Industrial waste such as automobiles, home appliances, building materials, and plastic containers are sorted and accumulated by magnet drums, etc., and non-ferrous metals separated, collected, and accumulated by an automatic non-ferrous metal separator using the same pole magnet. Is being collected. In addition, general waste is recycled as solid fuel (RDF, RPF), incineration ash / flying ash as a raw material for cement, cement and the like. However, the recycling rate of wastes classified as these industrial wastes and general wastes is low, and the recycling rate of general wastes is said to be about 20%.

Among the recycling techniques, for example, Patent Document 1 is a technique for efficiently recovering waste. Patent Document 1 describes a waste plastic sorting / separating method and a sorting / separating facility capable of accurately sorting and separating waste plastics mixed with various materials according to the material.

Japanese Unexamined Patent Publication No. 2011-073408

The sorting and separating equipment of Patent Document 1 is a crusher that crushes a waste plastic raw material to form a waste plastic piece of a predetermined size, and a steam cleaning device that is arranged on the downstream side of the crusher and cleans the waste plastic piece. And, it is arranged on the downstream side of the steam cleaning device and separated into floating or settling specific density sorting pieces by the specific gravity separating liquid located in the middle of the specific density row of the material contained in the waste plastic piece, and each specific gravity sorting piece. It has a main and sub-wet specific gravity sorter with three or less materials. A triboelectric charging device that is placed on the downstream side of the main and sub-wet specific gravity sorters to friction-charge each specific gravity sorter, and each friction-charged specific gravity sorter is a rotating drum electrode and a counter electrode to which a high voltage is applied. It is provided with a first to third electrostatic separation device having an electrostatic sorter that is put into an electrostatic field between the two and changes the falling direction to separate by material.

However, the sorting and separating equipment of Patent Document 1 aims to accurately sort and separate PTFE, PVC, ABS, PS, PE, PP, etc. by material from waste plastic raw materials crushed to a predetermined size. It is not intended to efficiently produce materials that can be used as chemical recycling resources from wastes containing various types of plastics, and raw materials for fuels such as cement raw materials and industrial furnace raw materials, depending on the application.

Wastes that have been disposed of as general wastes and industrial wastes contain many types of plastics, as well as foreign substances such as metals, earth and sand, and glass.

If the inventor of the present invention can sort fuel raw materials such as chemical recycled raw materials, cement raw materials and industrial furnace raw materials with high recycling value according to the use of recycled resources, the recycling cost can be reduced and discarded. We focused on the ability to improve the recycling rate of goods.

This is because those who use recycled resources are separate from the chemical industry system that uses chemical recycled raw materials, and the raw materials for fuel are separate from cement raw fuel and industrial furnace raw fuel system.

Since chemical recycled raw materials, fuel raw materials, and other non-recyclable residues can be easily sorted according to their specific gravity, we focused on the fact that they can be sorted if specific gravity sorting can be used.

Furthermore, in order to efficiently perform specific gravity sorting, it has been found that the waste plastic, which is the object to be treated, has an optimum size (particle size) for each specific gravity sorting process.

An object of the present invention is to use "petroleum refining raw materials" and "naphtha raw materials" as chemical recycling raw materials, and "cement raw materials" and "industrial furnace raw materials" as fuel raw materials, depending on the users of recycled resources. , Each of which is to provide a manufacturing apparatus for recycled raw materials to be efficiently collected.

One aspect of the equipment for producing recycled raw materials for solving the above problems is the equipment for producing recycled raw materials that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources. A crusher that crushes waste to a size of 60 mm or more, a magnetic sorter that separates metal from crushed material by a crusher, a non-iron separator that separates earth and sand from crushed material by a crusher, and metals and earth and sand. A washing machine that cleans the separated crushed material to make the crushed material wet, and a first that floats the crushed material washed by the washing machine in a heavy liquid having a first specific gravity in a first water tank. The first specific gravity sorter that separates the suspended matter and the first sediment that settles, and the first suspended matter separated by the first specific gravity sorter are crushed to a size of 50 mm or less, washed, and crushed. A crusher that makes the material wet, and a second float that floats in a liquid with a second specific gravity that is lighter than the first specific gravity in the second water tank, and a second that setstles the crushed material by the crusher. The second specific gravity sorter that separates into the sediment, the first recovery machine that dehydrates and dries the second suspended matter of the second specific gravity sorter, and recovers it as a raw material for chemical recycling, and the second sediment. It has a second recovery machine, which is dehydrated and dried, and recovered as a target for fuel raw materials.

One aspect of the waste specific gravity sorting treatment device for solving the above problems is the waste specific weight sorting treatment device that sorts and collects recycled raw materials from wastes containing various types of plastics according to the users of recycled resources. A crusher that crushes waste to a size of 100 mm to 300 mm, a magnetic sorter that separates and recovers iron from the waste crushed by the crusher, and a waste crusher separated by the magnetic sorter. A sieving machine that separates and recovers non-iron, a washing machine that cleans the crushed waste treated by the magnetic sieving machine and the sieving machine to make the crushed material wet, and the crushed material washed by the washing machine. In the first water tank, in order to recover the chemical recycling raw material, the first specific gravity sorter that separates the first suspended matter floating in the heavy liquid of the first specific gravity and the first settling matter that settles, and the first The first suspended matter separated by the specific gravity sorter of No. 1 is crushed to a size of 50 mm or less and washed to give the crushed material wettability. A second specific gravity sorter that separates a second floating substance suspended in the second liquid and a second settling substance that settles, and a second floating substance of the second specific gravity sorter are recycled. The dehydrator of 1, the first dryer that dries the dried second suspended matter, and collects the dried second suspended matter as the target of the chemical recycling raw material, and the second of the second specific gravity sorter. It has a second dehydrator for dehydrating the sediment, and a second dryer for drying the dried second sediment and recovering the dried second sediment as a target for fuel raw materials. ..

In the method for producing a recycled raw material from the waste of the present invention, the waste to be treated is set to the optimum size in each specific gravity sorting, so that the chemical recycled raw material and the fuel raw material can be used according to the user of the recycled resource. Can be efficiently manufactured.

It is a figure which showed the type and the specific density of the plastic which is the object of processing of each Example. It is a work flow which shows the process of efficiently manufacturing a chemical recycling raw material and a fuel raw material from the waste of Example 1. It is a block diagram of the manufacturing apparatus of the recycled raw material of Example 1. FIG. It is a figure which shows one Embodiment of the specific gravity sorting water tank used in the water tank specific gravity sorting process of Example 2. FIG. It is a figure which shows the other embodiment of the specific gravity sorting water tank used in the water tank specific gravity sorting process of Example 2. FIG. It is a work flow which shows the process of efficiently producing a chemical recycling raw material and a fuel raw material from the waste of Example 3. It is a figure seen from diagonally above the front of the water flow specific density sorter of Example 3. FIG. It is a partial cross-sectional view of the water flow specific gravity sorter of Example 3. FIG.

In the method for producing a recycled raw material of the present invention, "oil refined raw material" and "naphtha raw material" are used as chemical recycled raw materials, and "cement raw material" and "cement raw material" are used as fuel raw materials, depending on the user of the recycled resource. "Industrial furnace raw materials" are efficiently recovered, and raw materials for chemical recycling and raw materials for fuel are manufactured.

FIG. 1 shows the types and specific densities of the plastics contained in the waste of each example described later.

As shown in Table 1 “Types and Specific Gravity of Plastics”, plastics have different specific gravities from the types of plastics, that is, polypropylene, polyethylene, polycarbonate, PET resin (polyethylene terephthalate), polyvinyl chloride, and carbon fiber. Further, even if the same type of plastic is used, the specific gravity is slightly different due to the difference in the manufacturing method and the difference in the purpose of use.

Further, the plastic material is filled with talc as a crystal nucleating agent in order to improve its rigidity, heat resistance and dimensional stability. As a matter of course, the specific weight of waste with a large amount of talc filling is a large value. The specific gravity of waste with a small filling amount of talc is a small value.

The present inventors have focused on the fact that waste can be roughly classified into three categories according to the purpose of recycling. Of the three classifications, classification 1 has a specific density of less than 1.00 based on the specific density 1 of water. Category 2 is slightly larger than the specific density 1 (specific gravity 1.00 to 1.30). Category 3 has a higher specific density (specific gravity 1.30 or more). The specific gravity can be expressed by the weight per unit volume, for example, g / cm ³ . In this specification, when expressed by specific gravity, it is basically ^{described on the premise of g / cm 3} , but it is not limited to this.

Of the above categories, category 1 is collected as a recycled material for chemical recycling. Classification 1 includes polypropylene (PP), polyethylene (PE), and polypropylene talc-containing (PP), as shown in FIG. Category 1 is called an olefin resin, and the olefin resin used as a raw material for naphtha is used as a raw material for chemical recycling. Olefin-based resin is a general term for chain hydrocarbons having one double bond, and since it is composed of crystalline polymers, its physical properties change depending on the degree of crystallinity. Examples of the olefin resin include polyethylene and polypropylene, and the specific gravity is 1.00 or less in the range of Category 1.

Category 2 is recovered as a recycled raw material for fuel raw materials. Classification 2 is as shown in FIG. 1, ABS resin (ABS), nylon 12 polyamide (PA12), polystyrene (AS resin acrylonitrile styrene (SAN, AS), unsaturated polyester (UP), polyurethane (PU), epoxy resin (AS). EP), nylon 6 polyamide (PA6), nylon 66 polyamide (PA66), acrylic resin, methacrylic resin (PMMA), PVA resin, polyvinyl alcohol (PVAL), polycarbonate (PC), PET resin, polyethylene terephthalate (PET). Is done.

Classification 3 is collected as a residue. Classification 3 includes polyvinyl chloride, vinyl chloride resin (PVC), and carbon fiber (CFRP).

Further, in the present embodiment, the above classification is for selecting fuel raw materials such as chemical recycled raw materials, cement raw materials and industrial furnace raw materials having high recycling value according to the users of recycled resources. .. For example, if polypropylene talc-containing or ABS resin shown as Category 2 can be used as a raw material for chemical recycling, it can be treated as Category 1. In that case, the specific density of the specific gravity selection, which will be described later, will also be changed according to the classification.

Further, the classification 3 may be further classified into a classification 3-1 having a specific density of 1.30 to 1.34 and a classification 3-2 having a specific density of 1.35 or more. Classification 3-1 recycles polyvinyl chloride and vinyl chloride resin as material recycling materials by low-temperature heat embrittlement technology and the like, and reduces chlorine to the ocean. On the other hand, for the residue having a specific gravity of 1.35 or more, heavy metals may be separated from the incinerated ash by the chloride volatilization method with high efficiency and recovered.

In the present specification, a liquid having an appropriate specific density is used from the range of 0.92 to 1.20 in order to select Category 1, and a range of 1.10 to 1.35 in specific density is used to select Category 3. Use a liquid (heavy liquid) with an appropriate specific density. Details will be described later.

Raw materials for fuel can be used as fuel for industrial furnaces and thermal power generation.

As described above, in this embodiment, waste is sorted into chemical recycled raw materials, fuel raw materials, and residues by using specific gravity according to the person who uses the recycled raw materials and the intended use, and the chemical recycled raw materials and the fuel raw materials are selected. The process for collecting is shown.

In the present embodiment, the following steps are included in order to produce the chemical recycling raw material from the waste in the optimum process.
(1) Crushing step S10
(2) Metal soil recovery step S20
(3) Cleaning step S30
(4) Chlorine-based foreign matter removal step (first specific gravity sorting step) S40
(5) Grinding and cleaning step S50
(6) High-quality resin sorting step (second specific gravity sorting step) S60
(7) First recovery step S70
(8) Second recovery step S80

Further, in order to efficiently produce a chemical recycled raw material from waste by the above steps, it is important to (4) chlorine-based foreign matter removing step (first specific gravity sorting step) S40 and (6) high-quality resin sorting. The optimum size of the waste differs between the step (second specific gravity sorting step) S60.

That is, in the present embodiment, in the (4) chlorine-based foreign matter removing step (first specific gravity sorting step), the waste is crushed to a size of 100 mm to 300 mm at 60 mm or more, and (6) a high quality resin sorting step. In the (second specific gravity sorting step), the crushed waste is further crushed to a size of about 15 mm at 50 mm or less.

Wastes such as plastic containers and small household appliances, which are general wastes, and waste automobiles, home appliances, and building materials, which are industrial wastes, are the objects to be treated.

FIG. 2 is a work flow showing a process of efficiently producing a chemical recycling raw material and a fuel raw material from waste.

First, waste containing various materials (hereinafter referred to as waste) is crushed to a predetermined size in the crushing step S10. In the metal sediment recovery step S20, valuable resources such as metal are separated from the crushed crushed material, and the soil and sponge system are recovered.

After cleaning the crushed material recovered in the metal earth and sand recovery step in the cleaning step S30, the first specific gravity sorting step S40 is performed as a removal step for removing the earth and sand, the non-metal, and the halogen-based resin from the crushed material. By performing the cleaning step S30 before the first specific gravity sorting step S40, the crushed material can be made wet, and the sorting time and the sorting accuracy of the first specific gravity sorting step S40 can be shortened and improved. be able to. In the first specific gravity sorting step S40, a heavy liquid having a specific gravity of 1.10 to 1.35 is used. In the present specification, the specific density 1.10 to 1.35 of the heavy liquid used in the first specific gravity sorting step S40 is referred to as a heavy specific density or a first specific density. For the heavy liquid, salt, ferrochrome, potassium nitrate or the like is used. In the first specific gravity sorting step S40, sediment is removed from the crushed waste. In addition to earth and sand and non-metals, halogen-based resins and the like are mainly removed from this sediment. Halogen-based resins include vinyl chloride-based resins and bromine-based resins. This is because when chlorine is contained in the fuel raw material, it corrodes the inside and the surroundings of the furnace, and these are removed from the fuel raw material.

The size of the crushed material shall be 60 mm or more. When the size of the crushed material is 50 mm or less, the resin contained in the crushed material becomes dirty and the crushed material is mixed into the drain side of the washing machine for which the cleaning step S30 is performed, so that the maintenance frequency increases and the work efficiency deteriorates. To do. Therefore, the size of the crushed material may be 50 mm or more.

On the other hand, if the size of the crushed material is 100 mm to 300 mm, after the first specific gravity sorting step S40, dry sorting by a magnetic force sorter, a sieve sorter or a wind sorter, or manual impurities such as metal and earth and sand are performed. Picking work efficiency can be improved. Therefore, the size of the crushed material is 60 mm or more, preferably 100 mm to 300 mm (referred to as the first particle size).

In the pulverizing and cleaning step S50, the crushed material from which chlorine-based foreign substances have been removed is finely pulverized to a size of 50 mm or less, preferably about 15 mm at the same time as cleaning.

By washing the crushed product, the heavy liquid used in the first specific gravity sorting step can be removed, the wettability of the crushed product can be improved, and the sorting efficiency can be improved. Further, by setting the size of the pulverized product to 50 mm or less, preferably about 15 mm (second particle size), it is possible to improve the speed of sorting and the sorting accuracy by the specific gravity of the second specific gravity sorting step S60.

For the pulverized product, a second specific gravity sorting step S60 is carried out as a high quality resin sorting step. In the second specific gravity sorting step S60, a liquid (aqueous solution, oil) having a specific gravity of 0.92 to 1.20 is used. In the present specification, the specific density of the liquid used in the second specific gravity sorting step S60, 0.92 to 1.20, is referred to as a light specific density or a second specific gravity. In the second specific gravity sorting step S60, the chemical recycling raw material as a floating substance and the fuel raw material as a sediment are recovered. The suspended matter in the second specific gravity sorting step S60 is dehydrated and dried in the first recovery step to recover the first recovered material as a raw material for chemical recycling, and the sediment in the second specific gravity sorting step S60 is recovered in the second recovery step. It is dehydrated and dried to recover the second recovered material as a raw material for fuel.

It has been confirmed that the first recovered product recovered by obtaining the second specific gravity sorting step S60 has extremely few impurities and can be used for chemical recycling. In particular, it was confirmed that the chlorine content of the first recovered product was 300 ppm or less.

It was also confirmed that impurities such as chlorine can be suppressed to an extremely low level in the second recovered product of the second specific gravity sorting step S60.

<Each step of the manufacturing method of recycled raw materials>
<Crushing step S10>
The crushing step S10 is a processing step for crushing the waste. In the crushing step S10, the waste is crushed using the crusher 10 shown in FIG. 3 to obtain a crushed product. The size of the crushed material is 60 mm or more, preferably about 100 to 300 mm. In the treatment of the first embodiment, for the crushed material, for example, the crushed material (shredder dust) is conveyed to the next step by using a conveyor such as a screw conveyor.

The crushing step S10 is necessary for performing the treatment below the crushing step, and in particular, the size of the crushed material is the first in the cleaning step S30, which removes foreign substances such as metals and earth and sand adhering to the crushed material. It is suitable for improving the sorting efficiency by the specific gravity sorting step S40. If the size of the crushed material is 50 mm or less, the resin contained in the crushed material will be mixed with the dirt on the drain side of the washing machine that carries out the washing step S30, so that the maintenance frequency will increase and the work efficiency will deteriorate. be.

When the waste is, for example, a waste vehicle equipped with a drive motor and a wire harness, the manual sorting step S01 (not shown) or the dry sorting step S02 is performed before the crushing step S10. It is desirable to carry out.

Copper wire is used for wires such as these motors and wire harnesses, and vinyl chloride is often used for the skin of the wire. This is because in the crushing step S10, this vinyl chloride is entangled with a resin having frictional properties (urethane resin or the like), and chlorine is easily mixed. The recovered metal contains a large amount of chlorine and copper. ASR (Automobile Shredder Resolution), which is an automobile crushed residue (shredder dust), also contains a large amount of chlorine and copper. During the incineration process, chlorine content is not preferable because it corrodes the inside of the furnace and the surrounding area. Therefore, it is desirable to remove the halogen-based resin as much as possible before the crushing step S10.

The hand sorting step S01 is a work of removing metals, glass, paper, and wood chips from waste such as waste automobiles, home appliances, building materials, and plastic containers, and taking out the hand sorting residue. In the manual sorting step S01, in a step of preventing problems from occurring in each of the subsequent processing operations, for example, a person other than the object to be collected is manually taken out while being viewed with the naked eye on a belt conveyor. What is removed is treated as a residue. Metals can be recycled as they are.

Further, as the dry sorting step S02, sorting by an optical sorter, a sieve sorter, a wind sorter, or a magnetic sorter may be performed. Sorting by an optical sorter or a wind sorter is performed by, for example, analyzing the wavelength with near infrared rays to recognize a specific material and blowing off the object with an air nozzle.

<Metal sediment recovery process S20>
The metal earth and sand recovery step S20 is a dry step of separating resins, metals, and earth and sand from crushed waste, and removing unnecessary metals, earth and sand, and sponge-based materials from the waste in the next step. For example, as shown in FIG. 3, a sieve sorter 21 is used as the magnetic force sorter 20 and the non-ferrous metal separator. When it is not necessary to recover the iron content, the iron, the earth and sand, and the sponge may be separated from the crushed material by the sieve sorter 21.

The sorted metals are collected as metals, and the earth and sand are collected as residues. In the metal earth and sand recovery step S20, iron is separated and recovered from the crushed material by using a magnetic force sorter 20 (see FIG. 3). In this step, the crushed material from which iron is separated (iron separated crushed material) is transported to the next step.

Further, in the metal earth and sand recovery step S20, the earth and sand are separated from the crushed material by using the sieve sorter 21 (see FIG. 3), and the earth and sand such as non-ferrous metal and glass and the sponge system are collected as a residue. The sieving sorter 21 repels aluminum and copper that do not adhere to magnets to the front by the interaction between the eddy current generated by the rotating magnetic field and the magnetic field. However, dry specific gravity sorting that applies vibration can be used.

Metal sediment recovery step In order to sort and remove the metal, earth and sand, glass, and sponge system contained in the crushed material from the crushed material treated in S20, a dry sorting process such as an optical sorter or a wind sorter. It is desirable to carry out a manual sorting process to further remove impurities such as metal and earth and sand. Metals can be recycled as they are.

<Washing step S30>
The crushed material from which iron and earth and sand have been removed is then treated in the washing step S30. In the cleaning step S30, the waste crushed to a predetermined size is washed, and the dirt adhering to the crushed material is washed. In addition, the crushed material can be made wet by the cleaning step S30, and the sorting efficiency of the first specific gravity sorting step S40 of the next step is improved. This is because the specific gravity error due to the influence of air bubbles and the like adhering to the crushed material can be reduced. In the cleaning step S30, for example, a drum cleaning machine or the like is used.

Also in this step, the size of the crushed material is preferably 60 mm or more, preferably 100 to 300 mm.

<First specific gravity sorting step S40>
In the first specific gravity sorting step S40, earth and sand, non-ferrous metals, and mainly halogen resins are removed from the crushed material. Halogen-based resins include vinyl chloride-based resins and bromine-based resins. By performing the cleaning step S30 before the first specific gravity sorting step S40, the crushed material can be made wet, and the sorting time and the sorting accuracy of the first specific gravity sorting step S40 can be shortened and improved. be able to.

In the first specific gravity sorting step S40, a heavy liquid having a specific gravity of 1.10 to 1.35 is used. As shown in FIG. 1, since the specific gravity of the vinyl chloride resin such as polyvinyl chloride or vinyl chloride resin is 1.3 to 1.4, the specific density for selecting the vinyl chloride resin is used. The heavy liquid can be prepared by using a salt, ferrochrome, potassium nitrate or the like. In the first specific gravity sorting step S40, the vinyl chloride resin and the bromine resin are removed mainly as halogen-based foreign substances in addition to earth and sand and non-ferrous metals. This is because when chlorine is contained in the fuel raw material, it corrodes the inside and the surroundings of the furnace, and these are removed from the fuel raw material. In the first specific gravity sorting step S40, earth and sand mixed in the crushed material are also separated together with the vinyl chloride resin and sorted. In order to remove the vinyl chloride resin, the specific gravity of the heavy liquid is preferably about 1.3, but in order to remove other materials, the specific gravity is set to a value slightly smaller than that of the other materials. That is, the specific density is appropriately set between 1.10 and 1.35 according to the specific gravity of the material to be removed in the first specific gravity sorting step S40.

Also in this step, the crushed material has a predetermined size of 60 mm or more, preferably 100 mm to 300 mm. Since the crushed material has a certain size such as 60 mm or more, after the first specific gravity sorting step S40, a dry sorting step (magnetic force sorting machine, sieving sorting machine, wind sorting machine, etc.) S41 and a hand sorting step S42 (figure). By carrying out (without), the residual metal material adhering to the crushed material can be efficiently removed. On the other hand, if it is 50 mm or less, the cleaning efficiency of the cleaning step S30 deteriorates, and the resin contained in the crushed material is mixed with the dirt on the drain side of the cleaning machine performing the cleaning step S30, so that the maintenance frequency becomes high. It becomes inefficient.

In the first specific gravity sorting step S40, the size of the crushed material is set to 60 mm or more, specific gravity sorting is performed with a heavy liquid, and the first suspended matter and the first settling matter are sorted and collected.

The manual sorting step S42 may be further carried out for the first suspended matter of the first specific gravity sorting step S40. The hand sorting step S42 is a work of removing metals, glass, paper, and wood chips from waste such as waste automobiles, home appliances, building materials, and plastic containers, and taking out the hand sorting residue. In the manual sorting step S42, in a step of preventing problems from occurring in each of the subsequent processing operations, for example, a person other than waste is manually taken out while being visually observed by a person on a belt conveyor. What is removed is treated as a residue. Metals can be recycled as they are.

<Grinding cleaning step S50>
The crushed material from which the halogen-based foreign matter has been removed is finely crushed to a size of 50 mm or less, preferably about 15 mm at the same time as cleaning the crushed material in the crushing and cleaning step S50. By washing, heavy liquids such as salt water, ferrochrome, and potassium nitrate adhering to the crushed material or crushed material are removed to improve the wettability of the crushed material, so that the sorting accuracy of the second specific gravity sorting step S60 of the next step is improved. be able to.

Further, in the crushing and washing step S50, since the metals are thoroughly removed in the step before that, damage to the blade of the crushing and washing machine can be prevented. Generally, there are many types of crushing and cleaning machine blades for crushing waste to a size of 50 mm or less for each application, but the blade for recycling crushing is recycled with a crushing blade suitable for resin. Since it contributes to the improvement of the rate, when the metal is crushed, it deteriorates immediately and needs to be replaced, so that the work efficiency deteriorates. Therefore, in this embodiment, the metals are thoroughly removed before the pulverizing and cleaning step S50.

<Second specific gravity sorting step S60>
In the second specific gravity sorting step S60, the pulverized material is sorted into a second suspended matter and a second sedimented matter. In the second specific gravity sorting step S60, since the second suspended matter is used as a raw material for chemical recycling, a liquid having a specific gravity of 0.92 to 1.20 (0.92 to 1.20 g / cm3), for example, water, an aqueous solution, or oil is used. This is a water tank sorting process for sorting into floating and sedimenting water tanks.

In the second specific gravity sorting step, the second suspended matter is recovered as a raw material for chemical recycling, and the second sediment is recovered as a raw material for fuel. In the present invention, the specific gravity (first specific density) of the "heavy liquid" in the first specific gravity sorting step S40 and the specific gravity (second specific gravity) of the "liquid" in the second specific gravity sorting step S60 are in series. In the work flow, the first specific density is set to a value larger than the second specific gravity. That is, the relationship of the first specific density> the second specific gravity is established. Then, the value of the first specific gravity is determined from the range of the specific gravity of 1.10 to 1.35 depending on the material to be excluded from the recovered material, and the specific gravity is in the range of 0.92 to 1.20 depending on the material to be recovered as the raw material for chemical recycling. Therefore, the value of the second specific gravity will be set.

For example, a water tank is used in the second specific gravity sorting step S60 and the first specific gravity sorting step S40 described above. The water tank uses a treatment device equipped with a plurality of paddles mounted on the upper surface thereof and a spiral discharger attached to the bottom of the box-shaped sorting water tank to discharge the settled crushed matter.

In the first specific gravity sorting step S40 and the second specific gravity sorting step S60, running water is formed by scratching the liquid on the surface layer with a paddle in each of the water tanks. In order to recover the "petroleum refined raw material" and the "naphtha raw material" as the chemical recycling raw materials, water can be used as the liquid in the water tank in the second specific gravity sorting step S60. On the other hand, in the first specific gravity sorting step, a heavy liquid having a specific gravity of 1.10 to 1.35 is used mainly for removing the vinyl chloride resin.

In the first specific gravity sorting step S40 and the second specific gravity sorting step S60, the first floating substance and the second floating substance having a smaller specific density than the liquids in the respective water tanks, and the first settling substance and the second settling substance having a larger specific density are settled. This is a processing step for sorting into sediment. Although it takes a long time for natural sedimentation, it is possible to sort out crushed waste with different specific densities in a short time by using running water.

In this second specific gravity sorting step S60, when water is used as the liquid, the crushed waste having a specific gravity of less than water is regarded as the second suspended matter, and the crushed waste having a specific gravity of 1.00 or more is regarded as the second sediment. Sort. For example, as described in the table of "Each plastic and specific density" in Table 1, classification 1 (polypropylene (PP), polyethylene (PE), polypropylene talc-containing (PP)) is second suspended from the crushed material. It is sorted as a thing. The selected substances of Category 1 are processed in the first recovery step S70 (dehydration step, drying step), and "petroleum refining raw materials" and "naphtha raw materials" are recovered as chemical recycling raw materials.

In the second specific gravity sorting step S60, classification 2 (AS resin (acrylonitrile styrene) (AS), polystyrene (PS), etc.) is sorted as the second sediment.

When sorting waste crushed products having a specific density of less than 1.00 of water, it is also possible to use a liquid having a specific density smaller than 1.00 (the specific gravity is 0.90).

In Example 1, the second sediment is recovered as "cement raw fuel" and "industrial furnace raw fuel" which are raw materials for fuel through the treatment of the second recovery step S80 (dehydration step, drying step).

Halogen-based resins such as polyvinyl chloride and vinyl chloride resin (PVC) of Category 3 sorted as the first sediment by the first specific gravity sorting step S40, as well as metals and earth and sand, are recovered as residues. The recovered material is used for landfills and the like after being dechlorinated, for example.

Further, if necessary, the specific density sorting may be further incorporated after the second specific gravity sorting step S60.

Further, in the second specific gravity sorting step, since water is used for sorting, a cleaning effect on the second suspended matter and the second settling matter can be obtained.

<First recovery step S70, second recovery step S80>
In the first recovery step S70, the second suspended matter in the second specific gravity sorting step S60 is dehydrated and dried, and the first recovered material is recovered as a raw material for chemical recycling. Chemical recycled raw materials include "petroleum refined raw materials" and "naphtha raw materials".

In the second recovery step S80, the second sediment is dehydrated and dried, and the second recovery is recovered as a raw material for fuel. Raw materials for fuel include "cement raw materials" and "industrial furnace raw materials".

FIG. 3 is an apparatus block diagram of the waste sorting process of the first embodiment.

The waste sorting and processing apparatus of the first embodiment mainly includes a crusher 10, a magnetic force sorter 20, a sieve sorter 21 as a non-iron separator, a drum washer 30, and a first specific density sorter 40. , A crushing washer 50, a second specific gravity sorter 60, and a first recovery machine and a second recovery machine including a dehydrator and a dryer (not shown), respectively.

Before the crusher 10, the halogen-based resin is removed as much as possible by a hand sorter, an optical sorter, or a wind sorter. For example, in manual sorting, people other than waste are manually taken out while being viewed by the naked eye on a belt conveyor. What is removed is treated as a residue. In addition, the optical sorter analyzes the wavelength by near infrared rays, recognizes a specific material, and blows off the object with an air nozzle. It is also possible to use a dry sorter (magnetic force sorter, sieve sorter, wind sorter, etc.) in place of or together with the optical sorter.

The crusher 10 is a device including a rotary blade and a fixed blade that crush the waste to a predetermined size. The crusher 10 corresponds to the crushing step S10 of FIG.

The magnetic force sorter 20 separates and recovers iron from crushed waste by using magnetic force. The sieve sorter 21 separates and collects non-ferrous metals such as earth and sand and sponges from crushed waste. The magnetic force sorter 20 and the sieve sorter 21 correspond to the metal sediment recovery step of FIG.

The first specific gravity sorter 40 corresponds to the first specific gravity sorting step S40, and puts the crushed waste into the first water tank with a heavy liquid having the first specific density (specific gravity 1.10 to 1.35). It is separated and recovered into a first floating substance that is smaller than the specific density of the above and floats, and a first settling substance that is larger than the specific gravity of the heavy liquid and settles. Halogen-based resin is mainly removed from crushed waste. The specific gravity of the heavy liquid is appropriately set in the range of 1.10 to 1.35 depending on the material to be removed.

The crushing and washing machine 50 corresponds to the crushing and washing step S50, and crushes and cleans the crushed plastic material to a predetermined size. The crushing washer 50 crushes the crushed material while injecting water.

The second specific gravity sorter 60 corresponds to the second specific gravity sorting step S60, and the first suspended matter sorted by the first specific gravity sorter 40 is further subjected to the liquid of the second specific density (for example, in the second water tank). , Water) and the second sediment that settles.

Next, the second suspended matter is dehydrated and dried by a first recovery machine including a dehydrator and a dryer, and the first recovered material is recovered as a chemical recycling raw material. (First recovery step S70).

On the other hand, the second sediment is dehydrated and dried by a second recovery machine including a dehydrator and a dryer, and the second recovery is recovered as a raw material for fuel. (Second recovery step S80).

In the two water tanks of the first specific gravity sorter 40 and the second specific gravity sorter 60, the first specific density takes a value larger than the second specific gravity. That is, the relationship of the first specific density> the second specific gravity is established. Then, the value of the first specific gravity is determined from the range of the specific gravity of 1.10 to 1.35 according to the material to be excluded from the recovered material, and the specific gravity is 0.92 to 1.20 depending on the material to be recovered as the raw material for chemical recycling. Set the value of the second specific gravity from the range. Further, in the two water tanks of the first specific gravity sorter 40 and the second specific gravity sorter 60, the size of the waste is changed and liquids having different specific densities are used, so that the waste can be recycled according to the purpose of recycling. Recycled raw materials can be efficiently recovered.

The dehydrators of the first recovery machine and the second recovery machine dehydrate the second suspended matter and the second sediment. The dryers of the first recovery machine and the second recovery machine dry the dehydrated second suspended matter and the second sediment.

According to the first embodiment, the efficiency of the first specific gravity sorting step can be improved by setting the size of the waste charged into the first specific gravity sorting machine 40 to 60 mm or more.

Further, in order to treat the waste in the second specific gravity sorting step S60, it is necessary to crush the waste to 50 mm or less in the crushing and cleaning step S50, but in the first specific gravity sorting step S40, the waste is crushed to 60 mm or more. Since the material is processed to separate earth and sand, non-ferrous metal, vinyl chloride resin and the like as a residue, it is possible to avoid performing the crushing and cleaning step S50 for the residue and to save energy. That is, depending on the user of the recycled resource, the chemical recycled raw material and the fuel raw material can be efficiently recovered as a method for producing the recycled raw material.

Further, since the clogging on the drain side of the drum washer 30 can be prevented, maintenance labor can be saved. Further, from the first suspended matter collected by the first specific gravity sorter 40, picking of metals by a dry sorting step (sorting by a magnetic force sorting machine, a sieving sorting machine, a wind sorting machine, etc.) S41 or a hand sorting step S42. Work efficiency can be improved. Further, since the metals can be removed from the first suspended matter, damage to the crushing washer 50 can be prevented.

Further, according to the first embodiment, the first specific gravity sorter 40 and the second specific gravity sorter 60 optimize the size of the waste to shorten the entire process and improve the sorting accuracy. be able to.

According to the sorting treatment apparatus of Example 1, the waste is sorted by a plurality of specific gravity using liquids having different specific gravity according to the purpose of use of the recycled raw material, and the chemical recycled raw material, cement raw material and industrial furnace raw material are selected. It can be recycled as a raw material for fuels such as, etc., and the recycling rate of waste can be improved at low cost.

Since the first specific gravity sorting step S40 and the second specific gravity sorting step S60 of Example 1 are steps of sorting crushed matter and crushed matter by the specific gravity of the liquid, it is necessary to correctly set the specific gravity of the liquid.

This can be done by controlling the temperature of the liquid filled in the water tanks of the first specific gravity sorter 40 and the second specific gravity sorter 60 of the first embodiment.

In Example 2, the specific gravity of the heavy liquid in the water tank of the first specific gravity sorter 40 is stably obtained from the range of 1.10 to 1.35, which is determined according to the specific density of the material to be removed. A temperature controller is installed in the water tank. Further, in order to stably obtain the second specific density determined according to the material to be recovered in the range of 0.92 to 1.20 in the water tank of the second specific gravity sorter 60, the first one. Like the specific gravity sorter, it is equipped with a temperature controller in the water tank.

FIG. 4A shows an embodiment of a first specific gravity sorter 40 and a second specific gravity sorter 60 (hereinafter, may be referred to as a specific gravity sorter) used in the water tank specific gravity sorting step. The water tank 401 has an input port 402 for inputting waste and an discharge port 403 for collecting suspended matter at both ends. Further, the water tank 401 has a liquid discharge port 404 located near the inlet 402 and a plurality of paddles 405 located near the water surface in the water tank.

The crushed material or the crushed material is sorted by charging the waste into the water tank 401 containing the liquid 406 from the charging port 402 and collecting the suspended matter and the sediment separately. When the waste is charged, it is forcibly charged at the charging port 402 using a screw conveyor or the like. Since many plastics float lightly on water, the cleaning effect may not be sufficient simply by charging the plastic into the water tank 401. Therefore, the liquid is discharged from the liquid discharge port 404 from the vicinity of the upper part of the input port 402 to have a specific gravity. A downward flow is generated in the sorter.

The temperature controller has a heater 410 and a cooler 411 provided in the water tank 401, and a temperature control unit 412 that controls the temperature of the heater 410 and the cooler 411.

For example, the first specific gravity of the first specific gravity sorter 40 is determined from the range of the specific density 1.10 to 1.35 according to the specific gravity of the material to be removed, and the temperature is controlled in the water tank in order to stably obtain the specific density. A device is provided, and the heater 410 and the cooler 411 are controlled by the temperature control unit 412. Further, the second specific gravity of the second specific gravity sorter 60 is determined from the range of the specific density 0.92 to 1.20 according to the specific gravity of the material to be recovered, and the temperature control unit 412 is used to stably obtain the specific density. It controls the heater 410 and the cooler 411.

The structure of the water tank used in the first specific gravity sorting step S40 and the second specific gravity sorting step S60 is common.

A specific gravity adjuster for replenishing a liquid such as water or oil and adjusting the amount of salt, ferrochrome, and potassium nitrate in order to set the specific densities of the first specific gravity sorting step S40 and the second specific gravity sorting step S60 to predetermined values. May be provided.

FIG. 4B shows another embodiment of the specific density sorting machine used in the water tank specific gravity sorting step of Example 2. In FIG. 4B, the structure from the input port 402 into which the waste is charged to the water tank 401 is different from that of the specific gravity sorter of FIG. 4A. Bubbles adhere to the crushed waste of the first specific gravity sorter and the crushed waste of the second specific gravity sorter, and the net specific gravity of the crushed material and the crushed material is increased. It may be lighter.

When air bubbles are attached to the crushed material or crushed material, it is not possible to efficiently separate and sort the suspended material and the sediment by the specific gravity sorter. Therefore, in order to remove the crushed material and air bubbles adhering to the crushed material, a connecting portion 421 that connects the charging port 402 to the water tank 401 is provided. This connecting portion is filled with the same liquid as the water tank 401 of the specific gravity sorter.

The connecting portion 421 is inclined from the inlet side toward the water tank. An ultrasonic generator 423 is installed in the connecting portion 421, and the crushed material and air bubbles adhering to the crushed material are removed by the ultrasonic wave emitted from the ultrasonic generator 423. The air bubbles are discharged to the outside from the input port 402 along the upper surface of the connecting portion 421.

Further, if crushed matter or crushed matter stays in the connecting portion due to the inclination of the connecting portion 421 and is difficult to be put into the water tank, a forced insertion device 422 such as a screw conveyor is installed inside the connecting portion 421.

According to the specific gravity sorter of FIG. 4B, crushed matter or crushed matter to which air bubbles do not adhere can be put into the water tank 401, and the specific gravity sorting according to the liquid in the water tank 401 becomes possible.

FIG. 5 is a work flow showing a process of efficiently producing a chemical recycling raw material from waste in an embodiment.

In Example 3, the first specific gravity sorting step S40 and the second specific gravity sorting step S60 of Example 1 are the specific gravity sorting by the specific density of the liquid, whereas the first specific gravity sorting step S40 or the second specific gravity sorting is performed. At least one of the steps S60 utilizes a water flow specific gravity sorting step using a water flow. In FIG. 5, the first sorting step S450 corresponds to the first specific gravity sorting step S40, and the second sorting step S650 corresponds to the second specific gravity sorting step S60.

For example, both the first sorting step S450 and the second sorting step S650 perform water flow specific gravity sorting by a water flow, or either the first sorting step S450 or the second sorting step S650 is performed by a water flow. Water flow specific gravity sorting is performed, and the other is specific gravity sorting using the same liquid as in Example 1.

Since the other steps other than the first sorting step S450 and the second sorting step S650 are basically the same as those in the first embodiment, the description thereof will be omitted.

In this water flow specific gravity sorting step, the specific gravity of the liquid can be set between 1.00 and 1.20 in the state where the liquid, for example, water is circulated or in a vortex state in the water tank, and the waste is crushed. It is a sorting method that makes it possible to sort things.

6A and 6B show the water flow specific gravity sorting machine 500 used in the water flow specific gravity sorting step. FIG. 6A is a view seen from diagonally above the front of the water flow specific gravity sorter 600, FIG. 6B is a partial cross-sectional view of the water flow specific gravity sorter 600, and shows a cross section of the auxiliary line 604A of FIG. 6A.

The crushed or crushed waste of the waste input from the input port 602 moves to the discharge port 603 and is collected as a suspended substance before it settles due to its gravity in the moving water. A water stream is created in the liquid 610 by the agitator 611 in the water tank 601. When the flow velocity of this water flow is high, crushed matter having a specific gravity of more than 1 can be sorted as a suspended matter. When the flow velocity of the water flow is slow, crushed matter having a specific density of 1 can be sorted as a suspended matter. By adjusting this flow velocity, the specific gravity of the liquid can be set between 1.00 and 1.20, and wastes having slightly different specific densities can be selected.

When the first sorting step S450 is the first water flow specific gravity sorting step S451 by the water flow, for example, in order to remove the vinyl chloride-based foreign matter, the crushed material is suspended in the water flow in the water tank, the first water flow floating substance, and the first water flow. Separate with sediment. In the first water flow specific gravity sorting step S451, the specific gravity is sorted by varying the flow velocity of the water flow.

When the second sorting step S650 is the second water flow specific gravity sorting step S651 by the water flow, for example, in order to recover the material of classification 1, the crushed material is suspended in the water flow in the water tank, and the second water flow floating material and the second. Separates from the water flow sediment. The second water flow specific gravity sorting step S651 is adapted to perform specific gravity sorting by varying the flow velocity of the water flow.

According to Example 3, water can be used as the liquid of the first water flow specific gravity sorting S400 into which the crushed material is charged.

The device block for the waste sorting process of Example 3 was changed to the first specific gravity sorter 40 and the second specific gravity sorter 60 in FIG. 3, and the first water flow specific gravity sorter and the second water flow sorter were used. You can use it.

It should be noted that the present invention is not limited to the embodiment of the above-mentioned invention as long as the waste can be sorted and recovered according to the purpose of recycling by a plurality of specific gravity sorting, and various changes can be made without departing from the gist of the present invention. Is.

As described above, according to each embodiment, the waste specific gravity sorting treatment and the treatment apparatus thereof of the present invention are not limited to industrial waste, and general waste is sorted and collected according to the purpose of recycling. The recycling rate can be improved easily and at low cost.

S10: Crushing step S20: Metal sediment recovery step S30: Cleaning step S40: First specific gravity sorting step S50: Crushing and cleaning step S60: Second specific gravity sorting step 10: Crusher 20: Magnetic force sorting machine 21: Sift sorting machine 30 : Drum washer 40: First specific gravity sorter 50: Crushing washer 60: Second specific gravity sorter

Claims (14)

It is a manufacturing device for recycled raw materials that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
A crusher that crushes waste to a size of 60 mm or more,
A magnetic force sorter that separates metal from the crushed material by the crusher,
A non-ferrous metal separator that separates soil from crushed material by the crusher,
A washing machine that cleans the crushed material from which metal and earth and sand are separated and makes the crushed material wet.
The crushed material washed by the washing machine is suspended in a heavy liquid having a first specific density determined according to the specific density of the material to be removed from the range of 1.10 to 1.35 in the first water tank. A first density sorter that separates the first suspended matter and the settling first sediment,
The first suspended matter separated by the first specific gravity sorter was pulverized to a size of 50 mm or less.
A crushing washer that cleans and makes the crushed material wet.
The crushed product from the crushing washer is determined in the second water tank from the range of 0.92 to 1.20 according to the specific density of the material to be recovered as a raw material for chemical recycling , and is lighter than the first specific gravity. A second specific gravity sorter that separates a second floating substance suspended in a liquid having a specific density of 2 and a second settling substance that settles, and a second specific gravity sorter.
A first recovery machine that dehydrates and dries the second suspended matter of the second specific gravity sorter and recovers it as a raw material for chemical recycling.
A device for producing a recycled raw material, comprising a second recovery machine that dehydrates and dries the second sediment and recovers the second sediment as a target of the raw material for fuel. In the apparatus for manufacturing recycled raw materials according to claim 1.
The crusher is an apparatus for producing recycled raw materials that crushes the waste into a size of 100 mm to 300 mm. In the apparatus for manufacturing recycled raw materials according to claim 1.
The crushing washer is an apparatus for producing recycled raw materials that crushes the waste to a size of 15 mm. In the apparatus for manufacturing recycled raw materials according to claim 1.
The first specific gravity sorter is an apparatus for producing recycled raw materials using potassium nitrate as a heavy liquid. In the apparatus for manufacturing recycled raw materials according to claim 1.
Production of a recycled raw material having a temperature controller for controlling the temperature of at least one of the heavy liquid in the first water tank of the first specific gravity sorter and the liquid in the second water tank of the second specific gravity sorter. Device. In the apparatus for manufacturing recycled raw materials according to claim 1.
The first specific gravity sorter is
The crushed material washed by the washing machine is put into the first water tank with the first connecting portion.
A device for producing a recycled raw material, comprising a first ultrasonic generator that irradiates the first connecting portion with ultrasonic waves to remove air bubbles adhering to the crushed material. In the apparatus for manufacturing recycled raw materials according to claim 1.
The second specific gravity sorter is
A second connecting portion for charging the crushed material from the crushing washer into the second water tank, and
A device for producing a recycled raw material, comprising a second ultrasonic generator that irradiates the second connecting portion with ultrasonic waves to remove air bubbles adhering to the crushed material. In the apparatus for manufacturing recycled raw materials according to claim 1.
The magnetic force sorter separates the metal from the crushed material by using a magnetic force and collects it as an iron separated crushed material.
The non-ferrous metal separator is an apparatus for producing a recycled raw material that separates non-ferrous metal from crushed iron and recovers it as crushed non-ferrous metal. In the apparatus for manufacturing recycled raw materials according to claim 1.
The first specific gravity sorter is an apparatus for producing a recycled raw material that separates a halogen-based resin from a crushed product as the first sediment. It is a waste specific gravity sorting treatment device that sorts and collects recycled raw materials from wastes containing various types of plastics according to the users of recycled resources.
A crusher that crushes waste to a size of 100 mm to 300 mm,
A magnetic force sorter that separates and recovers iron from the crushed waste produced by the crusher.
A sieve sorter that separates and recovers the non-ferrous content of the crushed waste separated by the magnetic force sorter.
A washing machine that cleans the crushed waste treated by the magnetic force sorter and the sieving sorter to make the crushed material wet.
In order to recover the chemical recycled raw material from the crushed material washed by the washing machine in the first water tank, the first specific gravity determined from the range of 1.10 to 1.35 according to the specific density of the material to be removed . A first density sorter that separates the first suspended matter floating in the heavy liquid and the first settling matter that settles,
A crushing and washing machine that crushes the first suspended matter separated by the first specific gravity sorter to a size of 50 mm or less and cleans the crushed material to have wettability.
The crushed product from the crushing washer is determined in the second water tank from the range of 0.92 to 1.20 according to the specific density of the material to be recovered as a raw material for chemical recycling, and is lighter than the first specific gravity . A second specific gravity sorter that separates a second floating substance suspended in a liquid having a specific density of 2 and a second settling substance that settles, and a second specific gravity sorter.
A first recovery machine that dehydrates and dries the second suspended matter of the second specific gravity sorter to recover the first recovered material as a chemical recycling material.
A waste specific gravity sorting processing apparatus having a second recovery machine for dehydrating and drying the second sediment of the second specific gravity sorter to recover the second recovered material as a fuel gauge material. .. In the waste specific gravity sorting processing apparatus according to claim 10.
The first specific gravity sorter is a waste specific gravity sorter including a temperature controller for controlling the temperature of the heavy liquid in the first water tank. In the waste specific gravity sorting processing apparatus according to claim 10.
The second specific gravity sorter is a waste specific gravity sorter including a temperature controller for controlling the temperature of the liquid in the second water tank. In the waste specific gravity sorting processing apparatus according to claim 10.
The first specific gravity sorter is
A first connecting portion for charging the washed crushed material into the first water tank, and
A waste specific gravity sorting processing apparatus comprising a first ultrasonic generator for irradiating a crushed material with ultrasonic waves at the first connecting portion to remove air bubbles adhering to the crushed material. In the waste specific gravity sorting processing apparatus according to claim 10.
The second specific gravity sorter is
A second connecting portion for charging the washed crushed material into the second water tank, and
A waste specific gravity sorting processing apparatus comprising a second ultrasonic generator for irradiating a crushed material with ultrasonic waves at the second connecting portion to remove air bubbles adhering to the crushed material.

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