KR20120026719A - Apparatus and method for extracting metal from waste material - Google Patents

Abstract

PURPOSE: An apparatus and a method for extracting metal from waste materials containing metal are provided to reduce the time for pulverizing waste materials by rapidly cooling the waste materials before pulverization. CONSTITUTION: An apparatus for extracting metal from waste materials containing metal comprises a case(10), a cooler(20), a low-speed rotating drum(31), a high-speed rotating drum(33), and a pulverized material collection tray(40). The cooler rapidly cools waste materials that are soaked with water put into the case through an opening(14). The low-speed rotating drum comprises a door, an extracting mesh(32), and paddles(34). Wet waste materials(70) is put into the opening through the door. A plurality of through holes are uniformly perforated in the extracting mesh to discharge pulverized materials(71) smaller than a fixed size. The paddles are installed inside the extracting mesh. The high-speed rotating drum is rotated in the opposite direction to the low-speed rotating drum so that a plurality of crushing blades(35) pulverize the rapidly cooled waste materials supplied by the paddles. The pulverized materials passing through the extracting mesh of the low-speed rotating drum are accumulated in the pulverized material collection tray.

Description

Apparatus and method for extracting metal from waste material

The present invention relates to a technology for recycling waste materials, and more particularly, metals for extracting metals from a pulverized product by pulverizing mechanically after waste materials containing metals, such as waste wires coated with plastic resin, are quenched. An apparatus and method for extracting metal from waste materials.

Recently, due to the development of the electric, communication, and electronics industries, a large amount of waste materials in which metals are combined with waste wires or resins are generated. When the waste material is disposed, problems such as waste of resources and environmental pollution are caused. Therefore, a method of recycling the waste material has been sought to solve such a problem. In other words, the metal or resin is extracted from the waste material and recycled.

In particular, incineration methods and grinding methods are generally used as methods for extracting metals such as copper or aluminum from waste materials.

Incineration is a method of incineration of waste materials to extract metals from waste materials. In other words, resins having a relatively lower melting temperature than metals are melted at a lower temperature than metals, so that the metal can be easily extracted from the waste materials by incineration of the waste materials.

Such an incineration method is a method that can simply extract the metal from the waste material, but the smoke and odor occurs in the process of incineration of the resin of the waste material, which may contaminate the air, soil and the environment.

The pulverization method is a method of mechanically extracting resin and metal after pulverizing waste materials using a pulverizer. The pulverization method has the advantage of extracting the resin and the metal together, although some noise is generated during the crushing of the waste material.

However, since the resin and the metal included in the waste materials have different hardnesses and pulverization proceeds at room temperature, there is a problem that it takes a very long time to grind the waste materials with the crusher. In addition, the process of classifying resins and metals in the ground by component is also very cumbersome and inconvenient.

It is therefore an object of the present invention to provide an apparatus and method for extracting metal from metal containing waste material that can reduce the time required to grind the metal containing waste material.

It is another object of the present invention to provide an apparatus and a method for extracting metal from waste materials containing metal that can easily extract metals and resins from the milled product.

In order to achieve the above object, the present invention provides an apparatus for extracting metal from the waste material containing the metal having a case, a cooler, a low-speed rotary cylinder, a high-speed rotary cylinder, and a pulverizer. The case is formed with an inlet for injecting waste material containing a metal and a resin soaked in water on one side. The cooler is installed inside the case, and rapidly cools the waste material wetted with water introduced into the case through the inlet. The low-speed rotary cylinder is installed inside the case, a tubular shape is formed in the opening and closing the entrance that the waste material soaked in the water from the inlet of the case is formed, a plurality of pulverized crushed to a predetermined size is discharged And an extraction network having a uniform through hole therein, and a plurality of spatulas provided inside the extraction network. The high speed rotary cylinder is provided inside the low speed rotary cylinder, and has a plurality of grinding blades formed on an outer circumferential surface thereof to grind the quenched waste material supplied by the spatula while rotating in a direction opposite to the low speed rotary cylinder. The pulverized waste container is installed at a lower portion of the case below the low speed rotary cylinder, and the pulverized product passing through the extraction network of the low speed rotary cylinder is collected.

In the apparatus for extracting metal according to the present invention, the cooler is quenched at -50 to -80 degrees when the waste material moistened with water is supplied to the low speed rotary cylinder.

In the apparatus for extracting metal according to the present invention, the cooler may be installed inside the case above the low speed rotating cylinder to supply cold air to the low speed rotating cylinder.

In the apparatus for extracting metal according to the present invention, the spatula of the low speed rotating cylinder is installed to protrude radially toward the rotation axis on the inner circumferential surface of the extraction network, or is fixed in the rotational direction of the low speed rotating cylinder at the radial position. Can be installed at an angle tilt.

The apparatus for extracting metal according to the present invention is installed inside the case between the low speed rotating cylinder and the pulverized waste container, and separates the space in which the low speed rotating cylinder is installed and the space in which the pulverized waste container is installed, thereby allowing the cold air to be crushed. It is formed in the form of a funnel to block the exit to the container, to guide the movement of the pulverization of the pulverized product passing through the extraction network of the low-speed rotary cylinder to the pulverization container, the opening and closing opening and closing opening is formed in the center portion It may further include.

The apparatus for extracting metal according to the present invention may further include a control box for controlling driving of the opening and closing ports of the cooler, the low speed rotating cylinder, the high speed rotating cylinder, and the cold air blocking plate.

The present invention also includes a step of wetting waste materials comprising metal and resin in water, a quenching step of quenching the waste materials soaked in water, a crushing step of crushing the quenched waste materials into a pulverizer, and pulverization. The present invention provides a method for extracting metal from waste materials containing metal, including an extraction step of extracting metal falling into water or blowing down on the pulverized product.

In the method for extracting the metal according to the present invention, in the quenching step, the quench temperature is -50 to -80 degrees.

In the method of extracting the metal according to the present invention, in the pulverizing step, the pulverizer is provided with a low speed rotating barrel having an extraction network formed on an outer circumferential surface and a plurality of spatulas formed on the inner circumferential surface, and installed on the outer circumferential surface of the pulverizing shaft. It includes a high speed rotary cylinder formed of a grinding blade. At this time, the low speed rotary cylinder and the high speed rotary cylinder is rotated in the opposite direction to crush the waste material, the pulverized material crushed to a predetermined size or less during the grinding process is discharged out through the extraction network of the low speed rotary cylinder, less grinding The waste material can be supplied to the grinding blade of the high speed rotary cylinder by the spatula of the low speed rotary cylinder and can be pulverized.

And in the method of extracting the metal according to the present invention, the quenching step, the step of injecting the waste material moistened with water into the low speed rotary cylinder of the pulverizer, the cooler by supplying cold air to the low speed rotary cylinder the low speed It may include the step of quenching the waste material introduced in the tradition.

According to the present invention, since the waste materials are quenched and pulverized by a pulverizer, the grinding time of the waste materials can be reduced as compared with crushing the waste materials in a normal temperature state. In particular, since the waste materials are quenched after being soaked in water, the waste materials can be quenched more quickly.

The apparatus for extracting metals according to the present invention can easily extract metals from a pulverized product by using the difference in weight between the pulverized resin and the metal. In other words, since the specific gravity of the metal is higher than that of the resin, when the crushed material is put in water or blown into the crushed material, the metal with a relatively high specific gravity falls down, and the resin with a relatively low specific gravity floats in water or air. As they blow off and fall off, the metal can be easily extracted from the mill.

The low speed rotating cylinder and the high speed rotating cylinder installed inside the low speed rotating cylinder rotate in opposite directions to crush waste materials, and the pulverized material crushed to a predetermined size or less in the grinding process is discharged through the extraction network of the low speed rotating cylinder. The less pulverized waste material is again supplied to the grinding blade of the high speed rotary cylinder by a spatula installed in the low speed rotary cylinder, so that only the pulverized material crushed to a predetermined size or less can be discharged out of the low speed rotary cylinder. In other words, the device for extracting metal according to the present invention can uniformly crush waste materials.

1 is a view showing an apparatus for extracting metal from the waste material containing metal according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a portion A of FIG. 1.
3 is a flowchart illustrating a method of extracting metal from waste materials including metal according to an embodiment of the present invention.

It should be noted that in the following description, only parts necessary for understanding the embodiments of the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

The terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors are appropriate to the concept of terms in order to explain their invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be variations and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a device 100 for extracting metal from the waste material 70 containing the metal according to an embodiment of the present invention. FIG. 2 is an enlarged view of a portion A of FIG. 1.

1 and 2, an apparatus for extracting metal from a waste material 70 including metal according to an embodiment of the present invention (hereinafter, referred to as a “metal extraction device”) includes a case 10 and a cooler. 20, a pulverizer 30 having a low speed rotary cylinder 31 and a high speed rotary cylinder 33, and a pulverized material container 40, and the other cold air blocking plate 50, the control box 60 It may further include.

The case 10 constitutes an external shape of the metal extraction device 100, and has an internal space in which a cooler 20, a grinder 30, a cold air blocking plate 50, and a pulverized waste container 40 may be installed therein ( 12) The case 10 is formed at one side thereof, for example, with an inlet 14 through which waste material 70 containing a metal and resin wetted with water is introduced. In addition, the case 10 is provided with a cover 16 that can open and close the inlet 14. And the case 10 is provided with a door 16 to put the pulverized waste container 40 into the case 10 or to be taken out of the case 10 on one side of the lower portion. In this case, the case 10 may be manufactured as a refrigeration panel that can be suppressed that the cold air 23 supplied from the cooler 20 installed therein is discharged out. Alternatively, the outer shape of the case 10 may be made of a metal material, and a heat insulating material may be installed on the inner wall of the inner space 12. In addition, the cover 16 and the door 18 may also be made of a heat insulating material to block the escape of the cold air (23).

The cooler 20 is installed inside the case 10, and rapidly cools the waste material 70 soaked in water introduced into the case 10 through the inlet 14. The cooler 20 is installed inside the case 10 above the grinder 30 to supply the cold air 23 to the grinder 30. The cooler 20 is provided with a plurality of cold air outlets 21 for supplying the cold air 23, and supplies the cold air 23 to quench the waste material 70 soaked in water at -50 to -80 degrees. At this time, the cooler 20 may be a cooler having a capacity capable of quenching the waste material 70 introduced into the inner space 12 of the case 10 at least -80 degrees.

The reason for quenching the waste material 70 in this way is to reduce the grinding time while uniformly crushing the waste material 70 with the crusher 30. That is, it is easier to grind the quenched waste material 70 than to crush the waste material at normal temperature. In particular, since the waste material 70 is quenched after being soaked in water, there is also an advantage that the waste material 70 can be quenched more quickly.

The grinder 30 is installed in the inner space 12 of the case 10. At this time, the grinder 30 is installed between the cooler 20 and the cold air blocking plate 50, and the upper side is installed to be close to the cooler 20 and the inlet 14. The grinder 30 includes a low speed rotary cylinder 31 and a high speed rotary cylinder 33 provided inside the low speed rotary cylinder 31. The low speed rotating cylinder 31 and the high speed rotating cylinder 33 can rotate on the same axis.

The low speed rotary cylinder 31 is supplied with waste material 70 wetted with water introduced through the inlet 14 of the case 10, and the waste material 70 wetted with water is supplied to the cold air 23 of the cooler 20. After being quenched by the quenched waste material 70 is rotated at a low speed so that the quenched waste material 70 can be crushed evenly. At this time, the low-speed rotary cylinder 31 includes an extraction net 32 and the spatula 34, and is connected to the drive member (not shown) to rotate at a low speed. The extraction net 32 is formed in a tubular shape, the opening and closing doors 38 into which the waste material 70 soaked with water is introduced from the inlet 14 of the case 10, and the pulverized material pulverized to a predetermined size or less ( A plurality of through holes 36 through which 71 is discharged are formed uniformly. And a plurality of spatula 34 is installed inside the extraction net 32 to convey the less pulverized waste material 70 toward the upper portion of the high speed rotating cylinder 33 and dropped into the high speed rotating cylinder 33 to rotate To be crushed by the grinding blade 35 of tradition 33. At this time, the extraction net 32 may have a structure in which a plurality of through holes 36 are uniformly formed in the tubular metal cylinder.

The high speed rotating cylinder 33 is installed inside the low speed rotating cylinder 31, and rotates at a high speed about the axis of rotation 37 on the outer circumferential surface to transport waste materials 70 carried by the rotation of the low speed rotating cylinder 31. A plurality of grinding blades 35 for grinding are provided. At this time, the high speed rotary cylinder 33 rotates in the opposite direction to the low speed rotary cylinder 31 to crush the quenched waste material 70 carried by the spatula 34 into a plurality of grinding blades 35. In this case, the cutting blade 35 may be a cutting blade of a material having a hardness capable of grinding a metal such as copper or aluminum, for example, a cutting blade of tungsten or diamond.

Meanwhile, the plurality of spatulas 34 may be radially installed on the inner circumferential surface of the extraction network 32 toward the rotation shaft 37 of the high speed rotating cylinder 33. By the rotation of the extraction net 32, the spatula 34 carries the waste material 70 over the rotational shaft 37 of the high speed rotary cylinder 33, and the waste material 70 carried by the spatula 34 is gravity. It naturally falls to the high speed rotary cylinder 33 by the. Spatula 34 is the extraction net 32 to maintain a constant distance from the grinding blade 35 to transport the waste material 70 while minimizing interference with the grinding blade 35 of the high-speed rotary cylinder 33 It is installed on the inner circumferential surface of).

In the present embodiment, the spatula 34 is disclosed in the radial direction in the direction of the rotation axis 37 of the high-speed rotating cylinder 33, but is not limited thereto. For example, the spatula 34 may move the waste material 70 to a higher position to be dropped into the high speed rotary cylinder 33 so that the low speed rotary cylinder 31 may be moved in a radial position about the rotary shaft 37. It may be formed at an angle inclined in the rotation direction.

The pulverized waste container 40 is installed on the bottom surface of the inner space 12 of the case 10 under the low speed rotary cylinder 31, and the pulverized product 71 passed through the extraction network 32 of the low speed rotary cylinder 31. ), The side facing the low-speed rotary cylinder 31 is open. Meanwhile, the pulverized waste container 40 may be introduced into the internal space 12 of the case 10 or discharged out of the internal space 12 of the case 10 through the door 18 formed at the bottom of the case 10. Can be.

The cold air blocking plate 50 prevents the cold air 23 from escaping toward the pulverized product container 40 during the quenching of the waste material 70 introduced into the grinder 30 and the pulverization of the waste material 70, and pulverization. The completed pulverized product 71 is moved to the pulverized waste container 40. That is, the cold air blocking plate 50 is installed inside the case 10 between the low speed rotary cylinder 31 and the pulverized waste container 40, and the space in which the low speed rotary cylinder 31 is installed and the pulverized waste container 40 are installed. By separating the cold air 23 to block the exit to the crusher 40. In addition, the cold air blocking plate 50 is formed in the form of a funnel to guide the movement of the pulverized product 71 passing through the extraction network 32 of the low-speed rotary cylinder 31 to the pulverized material container 40, the center portion The opening and closing port 51 is formed. At this time, the cold air blocking plate 50 is provided with an opening and closing member 53 for opening and closing the opening and closing port (51). The opening / closing member 53 includes an opening and closing plate 55 and a guide 57 for guiding the opening and closing plate 55 in the horizontal direction.

On the other hand, the cold air blocking plate 50 may further include a vibration member for vibrating the cold air blocking plate 50, so that the pulverized product 71 can be moved more toward the opening and closing 51.

And the control box 60 performs the overall control operation of the metal extraction device 100, is installed on the outer surface of the case (10). That is, the control box 60 automatically or semi-automatically pulverizes the waste material 70 introduced into the case 10 according to the operator's selection signal or the pulverization condition set as the default. At this time, the grinding conditions include the quenching temperature of the waste material 70, the quenching time, the rotational speed of the grinder 30, the grinding time and the like.

In addition, the control box 60 may inform the operator of the state of the metal extraction apparatus 100, the grinding condition, or the progress of the grinding process by an image, light or sound using a display window, a lamp or a speaker.

On the other hand, after the pulverization process is completed, the pulverized waste container 40 is separated from the case 10 through the door 18, and then the metal is extracted from the pulverized product 71 by using a water tank or an air blower. can do. That is, in the metal and resin included in the pulverized product crushed to a predetermined size, since the metal has a specific gravity higher than that of the resin, the metal can be extracted from the pulverized product 71 using such a property.

For example, when the pulverized product 71 is placed in a bucket, metal in the pulverized product 71 sinks in water. Therefore, the metal can be easily separated from the pulverized product 71 by collecting the metal, which is a material that has sunk. At this time, since the resin in the pulverized product floats in water, the resin can also be easily separated from the pulverized product 71 by collecting the resin floating in the water.

Alternatively, when the pulverized product 70 is dropped while the air blower blows a certain flow rate in the horizontal direction, the relatively heavy metal falls down. Therefore, the metal can be easily separated from the pulverized product 71 by collecting the metal fallen down. At this time, because the relatively light weight of the crushed material (71) flies in the horizontal direction with the wind, it can be collected by moving to a different place than where the metal is collected.

Since the metal extracting apparatus 100 according to the present embodiment is crushed by the crusher 30 after quenching the waste material 70, the pulverization time of the waste material 70 is compared to crushing the waste material at a normal temperature state. Can be reduced. In particular, since the waste material 70 is quenched after being soaked in water, the waste material 70 can be quenched more quickly.

The metal extraction apparatus 100 according to the present exemplary embodiment may easily extract metal from the pulverized product 71 by using the difference in weight between the pulverized resin and the metal. That is, since the specific gravity of the metal is greater than that of the resin, when the pulverized product 71 is placed in water or blown through the pulverized product 71, the metal having a relatively high specific gravity falls down, and the resin having a relatively low specific gravity is water. Because it floats or is blown off by air and falls to another place, the metal can be easily extracted from the pulverized product 71.

The low speed rotary cylinder 31 and the high speed rotary cylinder 33 installed inside the low speed rotary cylinder 31 are rotated in opposite directions to crush the waste material 70, and are ground to a predetermined size or less in the grinding process. The pulverized product 71 is discharged through the extraction net 32 formed on the outer circumferential surface of the low-speed rotating cylinder 31, the less crushed waste material 70 is again by the spatula 34 formed in the low-speed rotating cylinder 31 By supplying and grinding to the grinding blade 35 of the high speed rotary cylinder 33, only the pulverized product 71 pulverized to a predetermined size or less can be discharged out of the low speed rotary cylinder 31.

The metal extraction method using the metal extraction apparatus 100 according to the present embodiment will be described with reference to FIGS. 1 to 3 as follows. 3 is a flowchart illustrating a method of extracting metal from the waste material 70 including metal according to an embodiment of the present invention.

First, in step S81, the waste material 70 is wetted with water while preparing the waste material 70 including the metal and the resin. In this case, the waste material 70 includes a waste wire including copper and aluminum, resins having metals, and the like. The waste material having a large size may be cut into a size suitable for feeding into the metal extraction apparatus 100.

Next, in step S83, the waste material 70 wetted with water is introduced into the low speed rotary cylinder 31. That is, the cover 16 of the case 10 is opened, and the door 38 of the low speed rotary cylinder 31 is opened. Subsequently, the waste material 70 soaked with water is introduced into the low-speed rotating cylinder 31 through the inlet 14 of the case 10. Then, the waste material 70 wetted with water is introduced, and then the door 38 of the low speed rotary cylinder 31 and the cover 18 of the case 10 are sequentially closed.

Next, in step S85, the waste material 70 injected into the low speed rotary cylinder 31 is quenched at -50 degrees to -80 degrees. That is, after closing the door 38 of the low-speed rotary cylinder 31 and the cover 18 of the case 10, if the operator requests the start of the grinding work of the waste material 70 through the control box 60, the cooler 20 supplies the cold air 23 to the low speed rotary cylinder 31 through the cold air outlet 21 under the control of the control box 60 to quench the waste material 70 soaked in water. At this time, the opening and closing opening 51 of the cold air blocking plate 50 is blocked by the opening and closing member 53.

After the quenching of the waste material 70 is completed in step S85, the control box 60 in the next step S87 rotates the low-speed rotary cylinder 31 and the high-speed rotary cylinder 33 in the opposite direction to the quenched waste The material 70 is crushed. At this time, the spatula 34 of the low-speed rotary cylinder 31 carries the less crushed waste material 70 to the upper portion of the high-speed rotary cylinder 33 and drops it into the high-speed rotary cylinder 33. The grinding blade 35 grinds the waste material 70 falling into the high speed rotary cylinder 33. And by repeating the above process, the grinder 30 grinds the waste material (70).

Subsequently, the pulverized product 71 pulverized to a predetermined size or less among the waste materials crushed in step S89 falls into the cold air blocking plate 50 through the extraction network 32 of the low speed rotary cylinder 31. That is, when the pulverized product 71 is pulverized finer than the size of the through hole 36 of the extraction net 32, it falls through the through hole 36 to the cold air blocking plate 50 positioned below. At this time, the pulverized product 71 dropped to the cold air blocking plate 50 moves along the surface of the cold air blocking plate 50 formed in a funnel shape and is collected toward the opening and closing port 51.

Next, in step S91, the control box 60 determines whether or not grinding is completed. For example, the control box 60 may determine whether or not grinding is completed by whether or not the set grinding time has elapsed.

If the crushing is not completed as a result of the step S91, the control box 60 is repeatedly performed from the step S87 to continue the waste material 70 grinding.

When the grinding is completed as a result of the determination in step S91, in step S93 the control box 60 opens the opening and closing port 51 of the cold air blocking plate 50 to move the pulverized product 71 to the pulverized product container 40. At this time, the control box 60 may output that the grinding operation is completed. The control box 60 may output the completion of the grinding operation through a display window, a lamp or a speaker.

On the other hand, the control box 60, when the pulverized material 71 on the cold air blocking plate 50 falls into the pulverized material container 40, the control box 60 closes the opening and closing port 51 by the opening and closing member 53.

Then, in step S95, the pulverized material collected in the pulverized material container 40 is put in water or blown through the pulverized material 70 to extract metal falling down from the pulverized material 71. That is, when the pulverized product 71 is collected in the pulverized product container 40, the door 18 of the case 10 is opened to take out the pulverized material container 40 from the case 10. The pulverized product 71 collected in the pulverized product container 40 may be extracted from the pulverized product 71 by using a bucket or an air blower. That is, in the metal and resin included in the pulverized product pulverized to a predetermined size or less, since the metal has a specific gravity higher than that of the resin, the metal is extracted from the pulverized product 71 using water or wind at a constant flow rate. can do.

For example, when the pulverized product 71 is placed in a bucket, metal in the pulverized product 71 sinks in water. Therefore, the metal can be easily separated from the pulverized product 71 by collecting the metal, which is a material that has sunk. At this time, since the resin in the pulverized product floats in water, the resin can also be easily separated from the pulverized product 71 by collecting the resin floating in the water.

Alternatively, when the pulverized product 71 is dropped while the air blower blows a certain flow rate in the horizontal direction, the relatively heavy metal falls down. Therefore, the metal can be easily separated from the pulverized product 71 by collecting the metal fallen down. At this time, because the relatively light weight of the crushed material (71) flies in the horizontal direction with the wind, it can be collected by moving to a different place than where the metal is collected.

At this time, when taking out the dust container 40 from the case 10 in step S95 may be performed manually by the operator, the control of the control box 60 when the transfer member is installed inside or outside the case 10 According to the transfer member can automatically put or remove the pulverized material container 40 through the door 18 of the case 10.

And the metal and the resin stuck together in the crushed product 71 collected in the crushed material container 40 is again fed to the crusher (30).

Meanwhile, the metal extraction method according to the present embodiment discloses an example in which waste material 70 soaked in water is introduced into the low speed rotary cylinder 31 to drive the cooler 20 in the case 10 to quench the liquid, but the present invention is limited thereto. It doesn't happen. For example, after quenching the waste material 70 soaked in water in a cooler manufactured separately from the case 10, the quenched waste material 70 may be thrown into the low speed rotary cylinder 31 to be crushed.

In addition, the metal extraction method according to the present embodiment discloses an example of quenching the waste material 70 soaked in water introduced into the low-speed rotary cylinder 31 while the low-speed rotary cylinder 31 and the high-speed rotary cylinder 33 are stopped. However, it is not limited to this. For example, after putting the waste material 70 soaked in water into the low speed rotating cylinder 31, the waste material 70 may be quenched while driving the low speed rotating cylinder 31 and the high speed rotating cylinder 33. At this time, during the quenching process of the waste material 70, the low-speed rotary cylinder 31 and the high-speed rotary cylinder 33 rotates at a slower speed than the rotational speed of the grinding conditions.

As described above, the embodiments of the present invention disclosed in the specification and the drawings are only presented as specific examples for clarity and are not intended to limit the scope of the present invention. In addition to the embodiments disclosed herein, it is apparent to those skilled in the art that other modifications based on the technical idea of the present invention may be implemented. For example, the present embodiment discloses an example in which a pulverized material container for collecting pulverized matter is installed separately from the case, but a case space under the cold air blocked plate may be used as the pulverized waste container.

Alternatively, a bucket or air blower can be installed to connect with the pulverizer. For example, the water tank may be installed to be connected to the bottom of the case. At this time, a water tank may be directly connected to the cold air blocking plate. Alternatively, a pulverized waste container is provided under the cold air blocking plate, a bucket is installed under the pulverized waste container, and an opening and closing hole may be formed at a lower portion of the pulverized waste container.

10: case 12: inner space
14: opening 16: cover
18,38: Door 20: Cooler
21: cold air outlet 23: cold air
30: grinder 31: low speed rotary cylinder
32: extraction network 33: high speed rotary cylinder
34: spatula 35: grinding blade
36 through hole 37 rotation axis
40: grinding bin 50: cold air blocking plate
51: opening and closing 53: opening and closing member
60: control box 70: waste material
71: pulverized 100: metal extraction device

Claims (10)

A case having an inlet formed therein for injecting waste materials including metal and resin wetted in water to one side;
A cooler installed inside the case and quenching the waste material wetted with water introduced into the case through the inlet;
It is installed inside the case, and the tubular shape is formed in the opening and closing the entrance opening and closing the waste material soaked in water from the inlet of the case, a plurality of through holes through which the pulverized powder pulverized to a predetermined size is discharged uniformly A low speed rotary cylinder having an extraction net formed thereon and a plurality of spatulas installed inside the extraction net;
A high speed rotary cylinder installed inside the low speed rotary cylinder and having a plurality of grinding blades formed on an outer circumferential surface thereof to crush the quenched waste material supplied by the spatula while rotating in a direction opposite to the low speed rotary cylinder;
A pulverized waste container installed at a lower portion of the case below the low speed rotating cylinder, in which a pulverized product passing through the extraction network of the low speed rotating cylinder is stacked;
Apparatus for extracting metal from the waste material containing metal, characterized in that it comprises a. According to claim 1, The cooler,
Apparatus for extracting metal from the waste material containing the metal, characterized in that to quench the -50 to -80 degrees when the waste material moistened with water is supplied to the low speed rotary cylinder. The method of claim 2, wherein the cooler,
Is installed inside the case of the upper portion of the low speed rotary cylinder for extracting metal from the waste material containing metal, characterized in that for supplying cold air to the low speed rotary cylinder. The spatula of claim 1, wherein
Apparatus for extracting metal from the waste material containing metal, characterized in that installed radially protruding toward the rotation axis on the inner circumferential surface of the extraction network, or inclined at a predetermined angle in the rotational direction of the low-speed rotary cylinder at the radial position . The method of claim 1,
It is installed inside the case between the low speed rotary cylinder and the pulverized waste container to separate the space in which the low speed rotary cylinder is installed and the space in which the pulverized waste container is installed to prevent cold air from escaping into the pulverized waste container, A cold air barrier plate formed in the form of a funnel to guide the movement of the pulverized product passing through the traditional extraction network to the pulverized waste container, and having an opening and closing opening and closing at a central portion thereof;
Apparatus for extracting metal from the waste containing metal, characterized in that it further comprises. The method of claim 5,
A control box for controlling driving of opening / closing of the cooler, the low speed rotating cylinder, the high speed rotating cylinder, and the cold air blocking plate;
Apparatus for extracting metal from the waste material containing metal, characterized in that it further comprises. Wetting the waste material containing a metal and resin in water;
A quenching step of quenching the waste material soaked in water;
A grinding step of crushing the quenched waste materials into a grinder;
An extraction step of extracting a metal falling into water or blowing down the crushed product into the crushed product;
Method for extracting metal from the waste material containing metal, characterized in that it comprises a. The method of claim 7, wherein in the quenching step,
Quenching temperature is -50 to -80 degrees, characterized in that the method for extracting metal from the waste material containing the metal. The method of claim 8, wherein in the grinding step,
The grinder includes a low speed rotary cylinder having an extraction network formed on an outer circumferential surface and a plurality of spatula formed on the inner circumferential surface, and a high speed rotary cylinder installed inside the low speed rotary cylinder and having a plurality of grinding blades formed on an outer circumferential surface thereof.
The low speed rotary cylinder and the high speed rotary cylinder are rotated in the opposite direction to crush the waste material, the pulverized material pulverized to a predetermined size or less during the grinding process is discharged out through the extraction network of the low speed rotary cylinder, less crushed The waste material is again supplied to the grinding blades of the high speed rotary cylinder by a spatula of the low speed rotary cylinder and pulverized. The method of claim 9, wherein the quenching step,
Injecting the waste material moistened with water into the low speed rotary cylinder of the grinder;
A cooler supplying cold air to the low speed rotary cylinder to quench the waste material introduced into the low speed rotary cylinder;
Method for extracting metal from the waste material containing metal, characterized in that it comprises a.

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