JP2003024820A - Method for recovering valuables from used household electric appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for recovering valuables from used household electric appliance which allows economically efficient separation and recovery of valuables from the crushed used household electric appliances. SOLUTION: In this method for recovering valuables from used household electric appliance, valuables are recovered from among raw materials comprising primarily light waste of the used household electric appliances which are crushed and are subjected to magnetic separation and air separation treatment. This method for recovering valuables from used household electric appliance has an unraveling process of charging the raw materials into a first wet separator 10, unraveling entanglement among the raw materials themselves by applying low frequency vibrations and classifying the raw materials to first light material comprising primarily plastic and first heavy material comprising primarily metal and/or covered conductive wire and a water flow classifying process of charging the first heavy material into a second wet separator 11 which classifies the same by using an ascending flow and, further, classifying the first heavy material to a second light material comprising primarily plastic and a second heavy material comprising primarily metal and/or covered conductive wire. Therein, the first and second light material and/or the second heavy material are recycled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a used home electric appliance which has been crushed and subjected to magnetic separation and wind separation processing,
For example, the present invention relates to a method for recovering valuables from used home appliances that recovers valuables from raw materials mainly composed of lightweight wastes such as refrigerators, air conditioners, washing machines, and televisions.

[0002]

2. Description of the Related Art Conventionally, crushed used electric home appliances, for example, plastics contained in refrigerators, air conditioners, washing machines, TVs, etc. must be reused after being sorted (sorted) from other valuable materials. It was disposed of without landfill. Further, as an apparatus for selecting metals, rubbers, plastics, etc. as described above, there is an apparatus for selecting by utilizing the difference in specific gravity of raw materials. For example, in the sorting apparatus proposed in Japanese Patent Laid-Open No. 1-94955, raw materials are sorted by utilizing the difference in sedimentation speed in water. Using this wet sorter, for example, when separating conductors (electric wires), first, the conductors are cut into small pieces, paper components are removed by an air separator, and then the raw materials are put into the wet sorter.
The raw materials were selected by utilizing the difference in sedimentation speed due to the difference in specific gravity.

[0003]

However, the above-mentioned plastic disposal method and method using the wet sorting apparatus have the following problems. First, when plastics are landfilled, not only can plastics not be reused, but a place for landfilling is also required. For this reason, there is a possibility that the economical efficiency is deteriorated and the environmental condition is deteriorated. In addition, when using a wet sorter to separate used home appliances that have been crushed, the particle size of the raw material must be fine and adjusted, and work other than sorting is required, which is time-consuming and economical. Not only that, but the workability also deteriorates. Then, after crushing the used home appliances, for example, since the conductor wire and the plastic are entangled with each other, the apparent specific gravity changes depending on the ratio of the conductor wire and the plastic, and the selection due to the difference in specific gravity is significantly hindered.
The efficiency of sorting becomes poor. The present invention has been made in view of the above circumstances, and provides a method for recovering valuables from used home appliances capable of economically and efficiently selecting and recovering valuables from crushed used homes. The purpose is to provide.

[0004]

The method for recovering valuables from used home appliances according to the present invention, which is in accordance with the above object, is a lightweight disposal of used home appliances that have been crushed and subjected to magnetic sorting and wind sorting. A method for recovering valuables from used home appliances that recovers valuables from raw materials that are mainly composed of raw materials. The raw materials are put into the first wet sorter and entangled with each other by applying low-frequency vibration. And a crushing step of separating into a first lightweight material mainly composed of plastic and a first heavy material mainly composed of metal and / or coated conductive wire, The second lightweight sorter, which is used for sorting and is further divided into a second wet sorter,
And a water flow fractionation step of fractionating into a second heavy object mainly composed of metal and / or coated conductor, and recycling the first and second lightweight objects and / or the second heavy object. in this way,
In the crushing step, by pouring the raw materials into water, it is possible to reduce the degree of entanglement between the raw materials and to entangle the raw materials due to low frequency vibration. Further, in the water flow separation step, by using the upflow,
It becomes possible to solve the entanglement of the raw materials which could not be solved in the crushing step and to adjust the apparent specific gravity.

Here, in the method of recovering valuables from used home appliances according to the present invention, the second heavy object is separated into the magnetic material and the non-magnetic material remaining by the magnetic separator, and the non-magnetic material is further separated. It is preferable to provide a sorting step for separating the non-ferrous metal and the third lightweight material mainly composed of plastic by a non-ferrous sorting machine. This makes it possible to further finely sort the second heavy goods by type. In the method of recovering valuables from used home appliances according to the present invention, the raw material charged into the first wet sorter is conveyed together with the water added by the vibrating conveyor and is supplied to the first wet sorter. Is preferred. This makes it possible to reduce the degree of entanglement of the raw materials in advance before being fed into the first wet sorter.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. Here, FIG. 1 is a flow chart of a valuable resource recovery method from a used home electric appliance according to an embodiment of the present invention, FIG. 2 is an explanatory view of the valuable resource recovery method from the used home electrical appliance, and FIG. ), (B), and (C) are a front view, a side view, an explanatory view of a state of use, a first wet sorter used for the method of collecting valuables from the used home appliances, respectively, and FIG. 4 (A), (B) and (C) are a front view, a side view, an explanatory view of a state of use, and a second wet sorter used for the method of collecting valuables from the used home electric appliances, respectively.
(A), (B), and (C) are explanatory views of the plastic in the raw material to be sorted by the valuable resource recovery method from the used home electric appliances, respectively, and FIGS. 6 (A), (B), and (C) are respectively It is explanatory drawing of the conducting wire in the raw material selected by the valuable material recovery method from the used home electric appliance.

First, the first and second methods used in the method of recovering valuables from used home appliances according to the embodiment of the present invention.
The wet sorters 10 and 11 will be described. Figure 3
As shown in (A) and (B), the first wet sorter 10 used in the method for recovering valuables from used home appliances according to one embodiment of the present invention has a rectangular shape in plan view. Become,
The length L1 is, for example, about 1800 mm, and the width W1 is, for example, 4
It has a tank 12 with a size of about 00 mm.
2, a vibrator 13 is provided on the upstream side, and a scraping machine 14 is provided on the downstream end. And this tank 1
The shape of No. 2 is a shape that becomes narrower toward the lower side, and a heavy object discharge port 15 is provided at the lower end of this tank 12.
For the tank 12, for example, a metal plate such as an iron plate or stainless steel having an inner surface coated with resin or rustproof coating is used. Further, it is also possible to use carbon steel or a product obtained by plating the inner surface of carbon steel with anticorrosion treatment.

The vibrating machine 13 is driven by hydraulic pressure, and has a rectangular net body 16 provided in a plan view at the tip thereof, and the vibrating machine is supported by a supporting member 17 having a U-shape. It is attached to the main body 18. This net 16 is the tank 1
Since the raw material charged in 2 is pushed into the water, the width of the net 16 is slightly smaller than the width inside the tank 12, and the net 1
6 is inclined with respect to the water surface at a predetermined angle θ (for example, about 20 to 45 degrees), and is always located above the water surface. As a result, the net body 16 repeatedly reciprocates between underwater and above the water surface, resulting in low frequency vibration (for example, 5 minutes per minute).
Approximately 20 times) is applied to the sorting target placed in the tank 12. In addition, it is preferable that the reciprocating speed of the net body 16 is changed according to the feeding speed of the separation target to the first wet sorter 10.

In the scraper 14, disks 20 are attached to both ends of a shaft portion 19, and a plurality of (four in this embodiment) bar members 21 are provided around the two disks 20.
Are arranged in parallel with the shaft portion 19 at equal intervals, and a plurality of protrusions 22 are formed around the rod member 21. In the scraper 14, the shaft portion 19 is arranged horizontally in the width direction of the tank 12, and the shaft portion 19 is rotatable about the shaft portion 19.
It is mounted on the top of and is rotated by a motor (not shown). Here, the scraper 14 is 1/5 to 5 from the lower end.
About 1/3 is in a state of being submerged in water. In addition, the scraping machine 14 may be any device that can efficiently scrape the lightweight material scraped from the tank 12, and for example, a device that can assist the lightweight material to naturally overflow from the tank 12 can be used. Is. The mesh 16 of the vibrator 13, the support member 17, and the scraper 14 are preferably made of the same material as the tank 12, but the scraper 1
4 can be made of reinforced plastic, for example. Here, in the present embodiment, as shown in FIG. 3 (C), by disposing four first wet sorters 10 in parallel, it is possible to process many sorting objects in a short time. ing.

With this structure, the object to be sorted, which has been introduced from the upstream end of the first wet sorter 10, is continuously pushed and returned into the water by the vibrator 13. As a result, the low-frequency vibration is applied to the sorting object in the tank 12, the entanglement between the heavy object and the lightweight object in the sorting object is released, and the heavy object having a specific gravity higher than that of water is settled, and the first object is separated. Heavy material discharge port 1 formed at the bottom of the wet sorter 10
Emitted from 5. Further, at this time, due to the flow of water generated by the reciprocating motion of the vibrator 13, the lightweight object is caused to flow downstream and float on the water surface, and the plurality of protrusions 22 formed on the bar 21 of the scraping machine 14 are provided. And is continuously discharged and collected from the lightweight material discharge port 15a formed at the downstream end of the first wet sorter 10.

As shown in FIGS. 4A and 4B, the second wet sorter 11 has a tank 23 having a length L2 of about 1800 mm and a width W2 of about 400 mm, for example. The shape of this tank 23 is rectangular when viewed from above,
Moreover, it has a shape having inclined portions 24 and 25 that become narrower toward the lower side.
Is provided. At the upstream end of this tank 23, the second
The water supply port 27 for ejecting the pushing water for sending the separation object thrown into the wet sorter 11 of FIG.
Below the inclined portion 25 on the downstream side, water supply ports 28 for ejecting main water for generating an upward flow in the tank 23 are formed. An air inlet 29 for generating an ascending flow of air in the tank 23 is formed below the inclined portion 24 on the upstream side of the tank 23. In addition,
The water supply ports 27 and 28 and the air inflow port 29 are
1 or 2 or more are provided in each.

Above the upstream side of the tank 23, there is provided a water sprinkler 30 capable of blowing crushed water, for example, a large number of small holes are formed, and a heavy load put in the tank 23 is
It comes in direct contact with water. Here, sprinkler 30
The amount of water supplied from the water supply ports 27 and 28 and the amount of air supplied from the air inflow port 29 can be adjusted by valves (not shown). Further, the depth of the tank 23 of the second wet sorter 11 may be determined in consideration of the processing speed of the separation target so that the sprinkler 30 can be used efficiently. Here, in the present embodiment, as shown in FIG. 4 (C), by disposing two second wet sorters 11 in parallel, it is possible to process many sorting objects in a short time. ing.

With this structure, the object to be separated, which is put in from the upstream end of the second wet sorter 11, is directly sprayed with the crushed water from the sprinkler 30, and the weight in the object to be separated is increased. The entanglement between the object and the lightweight object is alleviated and further solved. At this time, the specific gravity of the water in the tank 23 is determined by using valves attached to the water supply port 28 and the air inflow port 29, respectively.
It is adjusted by the upward flow of water blown out from the water supply port 28 that blows out the main water and the upward flow of air blown out from the air inlet 29. Here, the entanglement between the heavy object and the light object is also solved by the flow of water generated by the pushing water and the main water. When the amount of air and water blown into the water in the tank 23 is increased, the apparent specific gravity of the water in the tank 23 becomes large, and conversely, the apparent specific gravity of the separation object in the water becomes relatively small. Here, it is also possible to blow out only water from the water supply port 28 to create an upward flow without blowing out air from the air inflow port 29.

As a result, the weight of the water produced in the tank 23, which is larger than the apparent specific gravity of the water, is increased by the second wet sorter 11.
It is discharged from the heavy object discharge port 26 formed in the lower part of the.
On the other hand, a lightweight material having a smaller specific gravity than water is caused to flow downstream by the flow of the pushing water blown from the water supply port 27 and float on the water surface. Here, the water surface of the water stored in the second wet sorter 11 is
Since it is higher than the lower end of the light weight discharge port 26a formed at the downstream side end of the second wet sorter 11
Together with the water in the tank 23, it overflows from the tank 23 (overflows) and is continuously discharged and collected from the lightweight material discharge port 26a.

Next, a method of recovering valuables from used home electric appliances according to an embodiment of the present invention will be described using the above-mentioned first and second wet sorters 10 and 11. As shown in FIG. 1 and FIG. 2, a method for recovering valuables from a used home electric appliance according to an embodiment of the present invention can be applied to a used home electric appliance such as a refrigerator, an air conditioner, a washing machine, and a TV. By crushing with a two-axis crusher, and further performing conventionally known magnetic sorting and wind sorting to make used home appliances lightweight waste, and recovering valuables from raw materials mainly consisting of this lightweight waste. is there. The details will be described below.

Raw materials mainly composed of light-weight waste have various shapes due to crushing.
(Polypropylene), plastics such as ABS (acrylonitrile / butadiene / styrene), rubber, and the like, and heavy objects such as ferrous metals, non-ferrous metals, conductors (for example, coated conductors including sheathed conductors, and accessories attached) Conductor etc.) etc. are included. As for the shape of the above-mentioned plastic, as shown in FIGS. 5 (A), (B), and (C), there are many thin shapes (for example, about 1 to 5 mm), and the size thereof is, for example, 30 to 150 mm. It is of a degree. Further, most of the above-mentioned lead wires are covered with PVC (polyvinyl chloride), which is less likely to become a fuel, and these lead wires are crushed as shown in FIGS. 6 (A), (B) and (C). From long items to short items, or from one item to the accessory 31 with two conductors (see Fig. 6 (B))
And so on. The numbers in FIGS. 5 and 6 indicate the length of the plastic and the length of the conducting wire, respectively, and the unit is mm.

After the raw material is conveyed by the belt conveyor 32, the raw material is fed by a predetermined amount to a conventionally known vibrating conveyor 34 arranged on the downstream side while the feed amount is adjusted by using the ore feeding belt feeder 33. . The belt conveyor 3
An adjusting hopper 35 is provided between the ore feeding belt feeder 33 and, for example, when a trouble occurs in a device arranged on the downstream side of the ore feeding belt feeder 33, it is conveyed by the belt conveyor 32. The adjustment hopper 3 is temporarily operated without transferring the raw material to the ore feeding belt feeder 33.
It can be collected in 5.

Crushing water is added to the raw material conveyed to the vibrating conveyer 34, that is, the raw material fed to the first wet sorter 10, and is conveyed to the downstream side while being vibrated together with the water added by the vibrating conveyer 34. And the first wet sorter 10
Is supplied to. The raw material charged into the first wet sorter 10 is subjected to low-frequency vibration by the net body 16 of the vibrating machine 13, and the entanglement between the raw materials is released (see FIG. 3). As a result, the raw materials are the first lightweight material mainly composed of plastic (lightweight material having an apparent specific gravity of less than 1), metal and / or
Alternatively, it is separated into a first heavy product mainly composed of the coated conductive wire (a heavy product having an apparent specific gravity of 1 or more, for example, the specific gravity of copper in the conductive wire is about 8.9). This first lightweight object is a vibrator 13
By the flow of water generated by the water, the water flows to the downstream side, floats on the water surface, and is scraped out from the tank 23 by the plurality of protrusions 22 formed on the bar member 21 of the scraping machine 14, and the first wet sorter 10 It is continuously discharged from the lightweight material discharge port 15a. The discharged first lightweight material is further collected in a gutter 36 arranged on the downstream side of the first wet sorter 10, and thereafter, water is removed by a draining trommel 37, and the first lightweight material is put into a flexible container 38. It The water removed by the drainage Trommel 37 is stored (pool).
It is sent to the tank 39 and collected. On the other hand, the first heavy load is mainly composed of the metal and / or the covered electric wire which is entangled by the first wet sorter 10, but could not be crushed by the first wet sorter 10, for example. Although the product, that is, the product in which the coated wire which is a heavy product is entangled with the plastic product, the rubber or the like which is a lightweight product, is included, but since the apparent specific gravity is larger than that of water, the lower side of the first wet sorter The sediment is settled along the inclined surface formed in the above and is discharged from the heavy material discharge port 15 (the above is the crushing step).

The first heavy load discharged from the heavy load discharge port 15 is conveyed to the second wet sorter 11 arranged on the downstream side by the chain conveyor 40 having a scraping plate formed at a predetermined pitch. After that, it is put into the second wet sorter 11 for sorting using the ascending flow. Most of the water attached to the first heavy object is taken from the first heavy object at the time of being conveyed by the chain conveyor 40 and is collected in the water storage tank 39. As described above, the first heavy object includes the heavy object in which the entanglement is released and the heavy object and the light object intertwined with each other. Therefore, the material that could not be entangled in the first wet sorter 10 was blown into the second wet sorter 11 and then blown out by the sprinkler 30 formed in the second wet sorter 11. The crushed water alleviates the entanglement and further loosens it. At this time, the apparent specific gravity of the water in the tank 23 is adjusted in advance by adjusting the amount of air and / or water that creates the upward flow. In addition, the entanglement between the heavy object and the light object is also solved by the flow of water generated by the pushing water and the main water.

As a result, the first heavy object is further separated into a second light object having a plastic as a main component and a second heavy object having a metal and / or a coated conductive wire as a main element. The second lightweight material flows to the downstream side of the second wet sorter 11 and floats on the water surface by the flow of the pushing water blown out from the water supply port 27, and the second lightweight sorter 11 lightweight material. It is continuously discharged from the discharge port 26a. The discharged second lightweight material is collected in the gutter 41 arranged on the downstream side of the second wet sorter 11, and after the water is removed by the draining trommel 42, it is further conveyed by the belt conveyor 43. Be recovered. The water removed by the drainage trommel 42 is sent to the water storage tank 39 and collected. As described above, by collecting the water attached to the first and second lightweight objects or the water generated in this process in the water storage tank 39, for example, by using the pump 44 formed in the water storage tank 39, Water is supplied to the supply ports 27 and 28, and the above-mentioned main water, pushing water,
Reuse as crushed water. On the other hand, since the specific gravity of the second heavy material is larger than the apparent specific gravity of the water produced by the second wet sorter, the slopes 24, 25 formed on the lower side of the second wet sorter 11 are inclined. It descends along the surface and is discharged from the heavy object discharge port 26 (the above is the water flow sorting step).

The second heavy load discharged from the heavy load discharge port 26 is conveyed to the belt conveyer 46 arranged on the downstream side by the chain conveyer 45 having a scraping plate formed at a predetermined pitch. Note that much of the water attached to the second heavy object is also removed from the second heavy object at the time of being conveyed by the chain conveyor 46, like the first heavy object described above,
It is collected in the water storage tank 39. Then, the second heavy load is put into the arm roll container 47 and collected. As a result, the first lightweight material recovered by the flexible container 38, the second lightweight material transported by the belt conveyor 43 and recovered, and / or the arm roll container 4
The second heavy items collected in 7 can be recycled as valuables.

When the second heavy object is further selected, the second heavy object is first applied to a conventionally known magnetic separator 48. As a result, the second heavy object remains in the light-weight waste that cannot be removed by the conventionally known magnetic force selection and wind force selection treatment during the production of the raw material (for example,
Iron) and non-magnetic substances (for example, non-ferrous metals, plastics that cannot be separated by the first and second wet sorters 10 and 11 and remain in the second heavy substance), and are further non-magnetic. Kimono,
A non-ferrous metal sorter 49 known in the related art separates the non-ferrous metal and the third lightweight material mainly containing plastic. The third lightweight material recovered here and non-ferrous metals such as copper (including coated wire), aluminum, zinc, and alloys thereof are
It can be recycled as a raw material again (the above is the sorting step).

As a result, the lightweight material can be recycled (also referred to as thermal recycling) as an alternative fuel to fossil fuel or recycled as a plastic raw material (also referred to as material recycling). Also,
Heavy materials such as ferrous metals and non-ferrous metals can be reused as raw materials. Further, the recovered coated conductor is covered with copper, for example, P by applying it to a crusher, for example.
It is possible to remove VC and recover only copper for reuse. In this way, the raw materials recovered from used home appliances can be sorted efficiently and efficiently with high quality.
The sorted items can be effectively used in various fields. Therefore, the economical efficiency can be improved and the resources can be effectively used.

[0024]

EXAMPLES The results of tests conducted by applying the method of recovering valuable materials from used home appliances according to the present invention will be described. (Example 1) A material mainly composed of crushed, light-weight waste such as used home appliances, refrigerators, air conditioners, washing machines, TVs, etc., which have been subjected to magnetic separation and wind separation without re-crushing, The processing amount is 600 kg / hour, and 10
It was put into the first wet sorter 10 together with the crushed water supplied at 4 liters / minute. The total amount of raw material processed was 20.
It is 6 tons. By separating this raw material with the first wet sorter 10, 9.5 tons of the first lightweight material (46% of the raw material) is obtained.
%), And 11.1 tons of the first heavy material (54% of the raw material) could be recovered. The moisture attached to the first lightweight object and the first heavy object is 7.4% of each weight and 1%.
It was 1.0%. The amount of heavy material contained in this first lightweight material was as small as 1.9%, and it was found that the first wet sorter 10 was able to disentangle the raw materials and recover a high-quality lightweight material. .

(Embodiment 2) Next, a description will be given of a case where a plastic to be recycled, for example, as a fuel to be blown into a blast furnace is recovered from the above-mentioned raw material mainly composed of light-weight waste. In addition, used home appliances (refrigerator, air conditioner,
The amount of heat generated when the plastic contained in the washing machine and the television is burned is, for example, 9700 to 1100.
It is stable in the range of about 0 cal / g and can be used as fuel. Therefore, after the raw material is not crushed again, it is separated into a first lightweight product and a first heavy product by using the first wet sorter 10, and then the first heavy product is treated at a treatment amount of 600 kg / hour. As a result, it was charged into the second wet sorter 11 and separated into a second lightweight product and a second heavy product. The second wet sorter 11 has a crushing water amount of 104 liters / minute, a main water amount of 900 liters / minute, and a pushing water (replenishing water) amount of 250 liters / minute. There is no supply. The total throughput of the first heavy material is 2.1.
7 tons. Here, the above-mentioned conditions were set by visually observing that the coated conductive wire (heavy material) was not mixed with the second lightweight material.

This first heavy load is added to the second wet sorter 1
By fractionating at 1, it was possible to recover 0.83 tons (38% of the raw material) of the second lightweight material and 1.34 tons (62% of the raw material) of the second heavy material. The second
The moisture adhering to the light weight article and the second heavy article was 7.8% and 8.5% of each weight. The weight of the second lightweight material, that is, the amount of the coated conductor is 0.03 to 0.05.
It was found that a high-quality lightweight product could be collected with a small percentage. Therefore, since the coated conductor covered with PVC can be removed from the plastic, it is possible to recover the plastic that does not contain PVC, which is less likely to become a fuel, and use it as a fuel.

Although the present invention has been described with reference to one embodiment, the present invention is not limited to the structure described in the above embodiment and is described in the scope of claims. Other embodiments and modifications that are conceivable within the scope of the matters described above are also included. For example, in the above embodiment, the case where the valuable material is recovered from the raw material without re-crushing the crushed raw material has been described. As a result, the workability is good, and it is possible to efficiently collect valuable resources. However, after crushing the crushed raw material again, valuable materials can be recovered from this raw material. As a result, it is possible to further improve the quality of the collected valuable material and further expand the usage of the valuable material. In addition, it is also possible to recycle the floating material (for example, polypropylene) as a raw material of the plastic by subjecting the sorted and recovered plastic to a specific gravity sorting with water. As a result, since the plastic can be used without landfilling, the economical efficiency can be further enhanced and resources can be effectively used.

[0028]

In the method for recovering valuable materials from used home appliances according to claims 1 to 3, in the crushing step, the raw materials are put into water to reduce the degree of entanglement between the raw materials, and Since the entanglement between the raw materials can be released by the low-frequency vibration, it becomes possible to easily collect only the lightweight products mainly containing the plastic that does not contain the heavy products. Furthermore, in the water flow separation step, by using the upward flow, the entanglement of the raw materials that could not be solved in the crushing step can be solved and the apparent specific gravity can be adjusted, so that it corresponds to the type of the first heavy material to be separated. It becomes possible to carry out the sorting. As a result, it is possible to improve the quality of each of the lightweight material mainly composed of the plastic recovered from the crushed raw material and the heavy material mainly composed of the metal and / or the coated conductor, and further to separate the raw material by using water. Since this is performed, the recovered material can be washed at the same time, and thus the recovered material can be easily recycled. Therefore, it is possible to provide a method of recovering valuables from used home appliances that is economical because it saves time and water, has good workability, and can effectively utilize resources.

In particular, in the method of recovering valuables from used home electric appliances according to claim 2, since the second heavy object can be more finely sorted by type, the recovered object can be used in a wider range. It will be possible. Therefore, it is possible to provide a method for collecting valuables from used home appliances that can effectively utilize resources. In the method of recovering valuables from used home appliances according to claim 3, since the degree of entanglement of the raw materials can be relaxed in advance before being put into the first wet sorter, the first wet sorter is used. It is possible to collect a larger amount of lightweight products mainly made of plastic. Therefore, in the steps after the water flow separation step, the amount of heavy objects to be separated can be reduced, and the workability is improved.

[Brief description of drawings]

FIG. 1 is a flowchart of a valuable resource recovery method from a used home electric appliance according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a method of collecting valuables from the used home electric appliances.

3 (A), (B), and (C) are respectively a front view, a side view, and an explanatory view of a usage state of a first wet sorter used for a method of recovering valuables from the used home electric appliances. is there.

4 (A), (B), and (C) are a front view, a side view, and an explanatory view of a usage state of a second wet sorter used for a method of collecting valuables from the used home appliances, respectively. is there.

5 (A), (B), and (C) are explanatory views of plastics in raw materials to be sorted by the method for collecting valuables from the used home appliances.

6 (A), (B), and (C) are explanatory views of the lead wires in the raw material to be sorted by the method of collecting valuables from the used home electric appliances.

[Explanation of symbols]

10: first wet sorter, 11: second wet sorter, 1
2: tank, 13: vibrator, 14: scraper, 15: heavy material discharge port, 15a: lightweight material discharge port, 16: net, 17:
Support member, 18: vibrator main body, 19: shaft portion, 20: disc, 21: bar material, 22: protruding portion, 23: tank, 24: inclined portion, 25: inclined portion, 26: heavy object discharge port, 26a: Lightweight material discharge port, 27: Water supply port, 28: Water supply port, 29: Air inlet port, 30: Sprinkler, 31: Accessories, 32: Belt conveyor, 33: Mining belt feeder, 34: Vibration Conveyor, 35: Adjusting hopper, 36: Gutter, 37: Draining trommel, 38: Flexible container, 39: Water tank, 40: Chain conveyor, 41: Gutter, 42: Draining trommel, 43: Belt conveyor, 44: Pump,
45: Chain conveyor, 46: Belt conveyor, 4
7: Arm roll container, 48: Magnetic separator, 49:
Non-ferrous sorter

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B03B 11/00 B03B 11/00 B03C 1/00 B03C 1/00 B 1/23 1/24 A (72) Inventor Toshiki Umeda 3-6-42, Maboren, Kokurakita-ku, Kitakyushu-shi, Fukuoka Within Japan Magnetic Mining Co., Ltd. (72) Inventor, Katsuji Matsuzaki 3-6-42, Maboren, Kokurakita-ku, Kitakyushu, Kitakyushu, Japan (72) Inventor Miki Takatori 13th, Showa-machi, Minato-ku, Nagoya, Aichi Green Cycle Co., Ltd. F-term (reference) 4D067 EE12 EE16 GA20 4D071 AA41 AA64 AB04 AB06 AB14 AB24 AB44 BB03 BB12 CA03 CA05 DA15

Claims (3)

[Claims] 1. A method of recovering valuables from used home appliances, in which valuables are recovered from raw materials mainly of light-weight waste of used home appliances that have been crushed and further subjected to magnetic sorting and wind sorting. Then, the raw material is put into a first wet sorter, a low-frequency vibration is applied to disentangle the raw materials from each other, and a first lightweight product mainly made of plastic,
A crushing step of separating into a first heavy material mainly composed of a metal and / or a coated conductive wire, and the first heavy material is introduced into a second wet sorter for separating using a rising flow, and A second light weight body mainly made of plastic and a second light weight body mainly made of metal and / or coated conductive wire; Alternatively, a method of recovering valuables from used home appliances, characterized by recycling the second heavy object. 2. The method for recovering valuables from used home appliances according to claim 1, wherein the second heavy object is separated into a magnetic material and a non-magnetic material remaining by a magnetic separator, and the non-magnetic material is further separated. A method of recovering valuables from used home appliances, comprising a sorting step of separating a kimono into a non-ferrous metal and a third lightweight material mainly composed of plastic by a non-ferrous sorting machine. 3. The method of recovering valuables from used home appliances according to claim 1 or 2, wherein the raw material charged into the first wet sorter is conveyed together with water added by a vibration conveyor, A valuable material recovery method from used home appliances, which is supplied to a first wet sorter.