Metal foreign matter separating device

Abstract

The present invention provides a metal foreign matter separation device for separating a metal foreign matter in a raw material, the metal foreign matter separation device comprising: a housing configured so that the raw material passes through; an electromagnet screen disposed inside the housing to attract foreign matter and forming an attraction region of a first region perpendicular to the moving direction of the raw material; and a guide member that is disposed upstream of the flow of the raw material with respect to the electromagnet screen and that forms an opening of a second region smaller than the first region so as to guide the raw material to the opening.

Description

Technical Field

[0001] The present invention relates to a metal foreign matter separation device, and more particularly, to a metal foreign matter separation device for separating metals. Background Art

[0002] It is known that there is an electromagnetic iron remover for separating magnetic foreign matter (iron removal) from secondary battery raw materials of the high nickel (High Ni) series. The electromagnetic iron remover may include an electromagnetic screen having an electromagnet function to separate magnetic foreign matter (e.g., iron and / or SUS, etc.) in the raw materials in the form of powder or slurry. When power is applied to the electromagnetic iron remover, a magnetic field is formed inside the electromagnetic iron remover, and a magnetic force is generated on the surface of the electromagnetic screen. The magnetic force generated on the surface of the electromagnetic screen can adsorb foreign matter in the raw material to the surface of the electromagnetic screen. The foreign matter in the raw material can be removed after being adsorbed by the surface of the electromagnetic screen. Summary of the Invention

[0003] Problems to be solved by the invention

[0004] One aspect of the present invention provides a metal foreign matter separation device with an improved structure.

[0005] One aspect of the present invention provides a metal foreign matter separation device with improved adsorption efficiency.

[0006] Methods used to solve problems

[0007] The metal foreign matter separation device according to the concept of the present invention is a metal foreign matter separation device for separating metallic foreign matter from raw materials, which includes: a shell, which is configured to allow raw materials to pass through; an electromagnet screen, which is arranged inside the shell to adsorb the foreign matter and form an adsorption area of ​​a first area perpendicular to the moving direction of the raw material; and a guide member, which is arranged upstream of the flow of the raw material relative to the electromagnet screen and forms an opening of a second area smaller than the first area, thereby guiding the raw material to the opening.

[0008] The guide member may be configured such that the second region is located inside the first region.

[0009] The guide member may be arranged along the inner surface of the housing.

[0010] Alternatively, the electromagnetic screen includes a plurality of electromagnetic screens arranged in an up-down direction, and the guide member is arranged adjacent to an uppermost electromagnetic screen among the plurality of electromagnetic screens.

[0011] The guide member may be configured to contact an upper surface of the uppermost electromagnetic screen.

[0012] Alternatively, the guide member includes a first edge portion arranged along the inner surface of the shell; a second edge portion forming the second area; and an inclined surface formed to be inclined downward from the first edge portion to the second edge portion to guide the raw material.

[0013] The second edge portion may be configured to be located on an inner side of the inner surface of the housing than an outer periphery of the electromagnetic screen.

[0014] The guide member may be formed in an annular shape along the inner surface of the housing.

[0015] The electromagnetic screen may include: an outer peripheral portion formed in an annular shape; and a plurality of screen members arranged inside the outer peripheral portion; and the second region may be configured to be smaller than the outer peripheral portion.

[0016] The guide member may include a first edge portion arranged along an inner surface of the housing; and a second edge portion forming the second region and having a shape different from that of the first edge portion.

[0017] Alternatively, the electromagnetic screen includes a plurality of electromagnetic screens arranged along the up-down direction, and the plurality of electromagnetic screens include a first electromagnetic screen and a second electromagnetic screen, the first electromagnetic screen and the second electromagnetic screen are configured to form a pair of blank areas between the two sides and the inner surface of the shell, and are arranged along the up-down direction, the first electromagnetic screen and the second electromagnetic screen are configured to be formed with a first direction and a second direction separated from the first direction by a certain angle as the length direction, respectively.

[0018] The second edge portion may be configured to correspond to a shape of the first electromagnetic screen.

[0019] Alternatively, the guide member includes: a first inclined surface formed to incline downward from the first edge portion to the second edge portion; and a second inclined surface connected to a second edge portion protruding from the inner surface of the shell more than the adjacent second edge portion, and having a gentler inclination than the first inclined surface.

[0020] Effects of the Invention

[0021] According to an aspect of the present invention, the fluidity of a raw material passing through an electromagnetic screen can be improved, thereby increasing the amount of foreign matter processed.

[0022] According to an aspect of the present invention, the iron removal rate of raw materials passing through the electromagnetic screen can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a side view of a metal foreign matter separation device according to an embodiment of the present invention, and is a partially cutaway view.

[0024] Figure 2 It is a diagram showing the configuration of an electromagnetic screen according to an embodiment of the present invention.

[0025] Figure 3 FIG. 1 is a diagram showing an electromagnetic screen and a guide member according to an embodiment of the present invention.

[0026] Figure 4 FIG. 1 is a diagram showing a guide member according to an embodiment of the present invention.

[0027] Figure 5 1 is a cross-sectional view showing the relationship between the electromagnetic screen and the guide member according to one embodiment of the present invention.

[0028] Figure 6 This is a diagram showing the relationship between the electromagnetic screen and the guide member according to one embodiment of the present invention as viewed from above.

[0029] Figure 7 FIG. 1 is a diagram showing an electromagnetic screen and a guide member according to another embodiment of the present invention.

[0030] Figure 8 This is a diagram showing the relationship between the electromagnetic screen and the guide member according to another embodiment of the present invention as viewed from above.

[0031] Description of reference numerals:

[0032] 1: Metal foreign body separation device; 10: Screen tube;

[0033] 20: screen housing; 24: channel;

[0034] 30: Electromagnetic screen; 32: Peripheral part;

[0035] 34: wedge-shaped portion; 40: guide member;

[0036] 41: first edge portion; 42: second edge portion;

[0037] 43: inclined surface;

[0038] A1: first area;

[0039] A2: The second area. DETAILED DESCRIPTION

[0040] The embodiments described in this specification and the compositions shown in the drawings are merely preferred examples disclosed in the present invention, and various modifications may be made at the time of filing this application to replace the embodiments and drawings in this specification.

[0041] In addition, the same reference numerals or symbols shown in the respective drawings of this specification represent components or elements that perform substantially the same function.

[0042] In addition, the terms used in this specification are used to illustrate the embodiments and are not intended to limit and / or define the disclosed invention. Regarding the expression of the singular, unless there is a clear explanation in the context, the meaning of the plural is included. In this specification, the terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, parts or their combinations recorded in the specification, and do not preclude the possibility of the existence or increase of one or more other features or numbers, steps, operations, constituent elements, parts or their combinations.

[0043] In addition, terms including "first," "second," and other sequential terms used in this specification may be used to describe various components, but the components are not limited by these terms; these terms are used only to distinguish one component from another. For example, without departing from the scope of the technical solution of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of multiple related items or any one of the multiple related items.

[0044] In addition, terms such as "unit," "device," "block," "component," and "module" may refer to a unit that processes at least one function or action. For example, the terms may refer to at least one hardware component such as an FPGA (field-programmable gate array) or an ASIC (application specific integrated circuit), at least one software component stored in a memory, or at least one program processed by a processor.

[0045] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following drawings attached to this specification are intended to illustrate preferred embodiments of the present invention and to further facilitate understanding of the aforementioned invention and the technical concept of the present invention. Therefore, the present invention should not be interpreted solely in accordance with the contents described in these drawings.

[0046] Figure 1 This is a side view of a metal foreign body separation device according to an embodiment of the present invention, and is a partially cutaway view. Figure 2 It is a diagram showing the configuration of an electromagnetic screen according to an embodiment of the present invention.

[0047] The metal foreign matter separation device 1 can be configured to remove strongly magnetic foreign matter from the raw material. The metal foreign matter separation device 1 can be defined as an electromagnet iron remover. The raw material may include secondary battery raw materials. Secondary battery raw materials may include: positive electrode materials, including nickel (Ni), lithium cobalt oxide (LCO) and / or lithium iron phosphate (LFP) series, etc.; negative electrode materials, including carbon (CARBON), CNT and / or silicon dioxide series, etc.; and electronic materials other than these. Although secondary battery raw materials are given as examples, they are not limited to these and can be changed as needed. The metal foreign matter separation device 1 can filter out foreign matter in the raw material, namely magnetic foreign matter (iron particles), and the implementation of this function can be called "iron removal".

[0048] The metal foreign matter separation device 1 may include a mesh tube 10. A raw material in the form of powder or slurry may flow into the mesh tube 10 of the metal foreign matter separation device 1. For example, the raw material may be a secondary electron raw material of a high nickel series.

[0049] The metal foreign matter separator 1 may include a screen housing 20. The screen housing 20 may be configured to house a plurality of electromagnet screens 30 therein. The raw material flowing into the screen pipe 10 may move from above to below the screen housing 20. In other words, the raw material flowing into the screen pipe 10 may move within the channel 24 of the screen housing 20.

[0050] The metal foreign matter separator 1 may include multiple electromagnet screens 30. The multiple electromagnet screens 30 may be disposed within the screen housing 20. The electromagnet screens 30 may be configured to adsorb metallic foreign matter within the screen housing 20. Adsorption here may refer to the metallic foreign matter adhering to the electromagnet screens 30 through magnetism. The electromagnet screens 30 adsorb foreign matter particles with relatively greater magnetic properties than the raw material passing through the screen housing 20, while allowing the remaining particles to pass downward. If the raw material is defined as a weakly magnetic material, the metal foreign matter separator 1 with the electromagnet screens 30 can separate strongly magnetic materials, such as iron or SUS, from the raw material. Foreign matter separated by the electromagnet screens 30 may be defined as metallic foreign matter or foreign matter. Hereinafter, this will be referred to as foreign matter for ease of explanation. The magnetic force of the electromagnet screens 30 can be preset based on the magnetic strength of the foreign matter to be separated. When power is applied to the metal foreign matter separator 1, a magnetic field is formed within the device 1, generating a magnetic force on the surface of the electromagnet screens 30. The magnetic force generated on the surface of the electromagnetic screen 30 can adsorb foreign matter in the raw material to the surface of the electromagnetic screen 30. The foreign matter in the raw material can be removed after being adsorbed on the surface of the electromagnetic screen 30.

[0051] The screen housing 20 may have a channel 24 extending in the vertical direction. A plurality of electromagnetic screens 30 may be arranged spaced apart from each other in the vertical direction within the channel 24. The plurality of electromagnetic screens 30 may be arranged spaced apart from each other in the vertical direction.

[0052] The plurality of electromagnetic screens 30 may be arranged vertically inside the screen housing 20. That is, the plurality of electromagnetic screens 30 may be arranged from upstream to downstream along the moving direction of the raw material. The number of the plurality of electromagnetic screens 30 is not limited.

[0053] The plurality of electromagnetic screens 30 may be supported by the support rod 25. Specifically, the plurality of electromagnetic screens 30 include a coupling portion 35 formed at the center thereof, and the coupling portion 35 is connected to the support rod 25, thereby being supported by the support rod 25.

[0054] Figure 3 1 is a diagram showing an electromagnet screen and a guide member according to an embodiment of the present invention, Figure 4 1 is a diagram showing a guide member according to an embodiment of the present invention, Figure 5 is a cross-sectional view showing the relationship between the electromagnetic screen and the guide member according to one embodiment of the present invention, Figure 6 This is a diagram showing the relationship between the electromagnetic screen and the guide member according to one embodiment of the present invention as viewed from above.

[0055] The electromagnetic screen 30 can be formed into a circular shape to correspond to the inner surface 22 of the screen housing 20. The electromagnetic screen 30 may include an outer portion 32 and a wedge-shaped portion 34. The outer portion 32 may be formed into an annular shape. A plurality of wedge-shaped portions 34 are provided, and may be configured to be supported on the outer portion 32 at both ends. That is, the outer portion 32 may form an internal space therein, and a plurality of wedge-shaped portions 34 may be configured to cross the internal space. A plurality of wedge-shaped portions 34 may be arranged on a plane so as to be spaced apart from each other. The structure of the electromagnetic screen 30 is not limited thereto, and the outer portion 32 may be removed and the electromagnetic screen 30 may be composed only of the wedge-shaped portions 34. When the electromagnetic screen 30 is composed only of the wedge-shaped portions 34, a separate support rod (not shown) may be provided to support the plurality of wedge-shaped portions 34.

[0056] The electromagnet mesh 30 can form a first area A1 (refer to Figure 6 ). The first area A1 may refer to an area where adsorption is achieved based on the electromagnet mesh 30. The boundary of the first area A1 may be formed along the periphery of the electromagnet mesh 30. The first area A1 may refer to an area where adsorption of foreign matter is achieved in the electromagnet mesh 30. Figure 6 As shown, the boundary of the first area A1 of the electromagnetic screen 30 may be formed along the peripheral portion 32. However, the present invention is not limited thereto, and when the peripheral portion 32 is omitted, the outer contour of the wedge-shaped portion 34 may refer to the boundary of the first area A1.

[0057] The plurality of electromagnetic screens 30 may be supported by the support rod 25 and spaced apart from each other. The spacing between the plurality of electromagnetic screens 30 may be the same, or may be set to different spacings according to the installation environment or the structure and working mode of the electromagnetic screen 30.

[0058] The metal foreign matter separation device 1 may include a guide member 40. The guide member 40 may be configured to guide the raw material flowing in the screen housing 20 to the electromagnetic screen 30. The guide member 40 may be a component of the electromagnetic screen 30.

[0059] The guide member 40 may be configured in an annular shape and may be configured to be arranged along the inner surface 22 of the screen housing 20 .

[0060] The guide member 40 may be located above the electromagnetic screen 30. Specifically, the guide member 40 may be located upstream of the electromagnetic screen 30 relative to the flow direction of the raw material. In this embodiment, the guide member 40 is shown adjacent to the uppermost electromagnetic screen 30 among the electromagnetic screens 30, but the invention is not limited thereto. As an example, the guide member 40 may be configured to be spaced upward from the uppermost electromagnetic screen 30, or may be configured as follows: Figure 5 As shown, it is configured to contact the uppermost electromagnet screen 30.

[0061] The guide member 40 can be configured to be installed on the upper portion of the electromagnetic screen 30. Thus, the guide member 40 can guide foreign matter to the electromagnetic screen 30 to concentrate the raw materials, thereby improving the efficiency of adsorption of foreign matter adsorbed by the electromagnetic screen 30. The configuration of the guide member 40 is not limited. As an example, it can be configured along the inner surface 22 of the screen housing 20 instead of being installed on the upper portion of the electromagnetic screen 30. In this embodiment, although the guide member 40 is separated from the inner surface 22 of the housing by a certain distance as an example, it is not limited to this. It is also possible that the outer periphery of the guide member 40 is configured to contact the inner surface 22 of the screen housing 20.

[0062] The guide member 40 can be configured to work in conjunction with the electromagnetic screen 30. The electromagnetic screen 30, which has foreign matter adsorbed thereon, can be vibrated by a subsequent vibration device. That is, the vibration device can be used to vibrate the electromagnetic screen 30 to separate the foreign matter adsorbed thereon. The guide member 40 can be configured to be connected to the electromagnetic screen 30 and vibrate together with the electromagnetic screen 30.

[0063] The guide member 40 may be annular. The cross-section of the guide member 40 may be substantially triangular. However, the cross-sectional shape of the guide member 40 is not limited thereto. The guide member 40 may be disposed along the inner surface 22 of the screen housing 20 and may be located above the electromagnet screen 30.

[0064] Guide member 40 may include a first edge portion 41 and a second edge portion 42. First edge portion 41 may be configured to correspond to inner surface 22 of screen housing 20, and second edge portion 42 may be configured to be spaced further from inner surface 22 of screen housing 20 than first edge portion 41. That is, second edge portion 42 may be spaced further away from first edge portion 41 toward the center of screen housing 20. Second edge portion 42 may define a boundary of opening 44 formed inside second edge portion 42.

[0065] The guide member 40 may include an inclined surface 43. The inclined surface 43 may be configured to guide the raw material flowing through the screen housing 20 and focus it on the electromagnet screen 30. The inclined surface 43 is configured to connect the first edge portion 41 and the second edge portion 42. Specifically, the inclined surface 43 may be configured such that the first edge portion 41 is located on the outer periphery of the inclined surface 43 and the second edge portion 42 is located on the inner periphery. The inclined surface 43 may be configured to slope downward from the first edge portion 41 to the second edge portion 42.

[0066] The guide member 40 may form an opening 44. The opening 44 may be formed by the second edge portion 42 and may form a second area A2 (refer to Figure 6 ). That is, the second edge portion 42 may form a boundary of the second area A2. Figure 6 In the figure, although the second area A2 is shown to be formed inside the opening 44, this is for the purpose of distinguishing it from the opening 44. The space formed by the opening 44 may be defined as the second area A2.

[0067] Second region A2 is a boundary through which the raw material flowing through screen housing 20 passes, and may be an area located inside the housing's inner surface 22. Since the raw material is guided by inclined surface 43 of guide member 40, second region A2 may be formed to have a smaller cross-sectional area than the cross-sectional area of ​​inner surface 22 of screen housing 20.

[0068] The second area A2 can be configured to be smaller than the first area A1. The second area A2 can be configured to be located inward of the first area A1. That is, the second edge portion 42 of the guide member 40 can be configured to be located inward of the outer periphery 32 of the electromagnetic screen 30, or inward of the outer contour of the wedge-shaped portion 34, relative to the inner surface 22 of the housing. In this embodiment, the outer periphery 32 is located along the outer contour of the wedge-shaped portion 34, so the second edge portion 42 of the electromagnetic screen 30 can be configured to be located inward of the outer periphery 32.

[0069] With this structure, the guide member 40 can guide the raw materials flowing into the screen housing 20 to further concentrate and flow toward the electromagnetic screen 30 , thereby improving the adsorption efficiency of the electromagnetic screen 30 .

[0070] Hereinafter, a foreign matter separation device according to another embodiment of the present invention will be described. In the description, for the same structure as that described above, repeated description will be omitted.

[0071] Figure 7 1 is a diagram showing an electromagnet screen and a guide member according to another embodiment of the present invention, Figure 8 This is a diagram showing the relationship between the electromagnetic screen and the guide member according to another embodiment of the present invention as viewed from above.

[0072] The screen housing 20 may have a channel 24 extending in the vertical direction. A plurality of electromagnetic screens 130 may be arranged spaced apart from each other in the vertical direction within the channel 24. A plurality of electromagnetic screens 130 may be arranged spaced apart from each other in the vertical direction.

[0073] The plurality of electromagnetic screens 130 are arranged vertically inside the screen housing 20. That is, the plurality of electromagnetic screens 130 may be arranged from upstream to downstream along the moving direction of the raw material. The number of the plurality of electromagnetic screens 130 is not limited.

[0074] The electromagnetic screen 130 can be configured to correspond to the inner surface 22 of the shell, and only to a portion of the inner surface 22. The electromagnetic screen 130 may include an outer portion 132 and a wedge-shaped portion 134. The outer portion 132 may be formed in an arc shape. A plurality of wedge-shaped portions 134 are provided, and may be configured so that both ends are supported on the outer portion 132 respectively. The plurality of wedge-shaped portions 134 may be arranged on a plane so as to be spaced apart from each other. The structure of the electromagnetic screen 130 is not limited to this, and the outer portion 132 may be removed and only the wedge-shaped portion 134 may be configured. When the electromagnetic screen 130 is composed only of the wedge-shaped portion 134, a separate support rod (not shown) may be provided to support the plurality of wedge-shaped portions 134.

[0075] Different from the above-mentioned embodiment, the electromagnetic screen 130 can be configured such that the outermost wedge-shaped portion 134 is separated from the inner surface 22 of the housing. That is, the electromagnetic screen 130 can form a pair of blank areas A3 between its two sides and the inner surface 22 of the housing (refer to FIG. Figure 7 ).

[0076] Among the multiple electromagnetic screens 130, when the wedge-shaped portion 134 of the first electromagnetic screen 130a is oriented in a first direction W1, the wedge-shaped portion 134 of the second electromagnetic screen 130b disposed below it can be disposed in a second direction W2 that is different from the first direction W1. In other words, the multiple electromagnetic screens 130 can be arranged at a predetermined angle to each other, so that raw material passing through a certain location on the passage 24 of the screen housing 20 passes through at least one electromagnetic screen 130.

[0077] In other words, it can be configured that, for the blank area A3 formed by any one of the multiple electromagnetic screens 130 , at least one of the remaining electromagnetic screens 130 can block the blank area from the moving direction of the raw materials.

[0078] The multiple electromagnetic screens 130 can be arranged to be spaced apart at certain angles, and the spacing angles can be arranged to have a certain regularity. However, there is no limitation on the arrangement of the multiple electromagnetic screens 130, as long as the raw material passing through the blank area A3 of any electromagnetic screen 130 is blocked by at least one of the remaining electromagnetic screens 130.

[0079] The electromagnet mesh 130 may form a first area A1. The first area A1 may refer to an area where adsorption is achieved based on the electromagnet mesh 130. The boundary of the first area A1 may be formed along the periphery of the electromagnet mesh 130. The first area A1 may refer to an area where adsorption of foreign matter is achieved by the electromagnet mesh 130. Figure 8 As shown, the boundary of the first area A1 of the electromagnetic screen 130 can be formed along the outer portion 132, or along the outer portion 132 and the wedge portion 134. However, the present invention is not limited thereto. When the outer portion 132 is omitted, the outer contour of the wedge portion 134 can refer to the boundary of the first area A1.

[0080] The guide member 140 may include a first edge portion 141 and a second edge portion 142. The first edge portion 141 may be configured to correspond to the inner surface 22 of the screen housing 20, and the second edge portion 142 may be configured in a shape different from that of the first edge portion 142.

[0081] The second edge portion 142 can be configured to correspond to the shape of the first, uppermost, electromagnetic screen among the plurality of electromagnetic screens. The second edge portion 142 can include a 2a edge portion 142a located inward of the outer portion 132 or the end of the wedge-shaped portion 134; and a 2b edge portion 142b located inward of the outermost wedge-shaped portion 134. The 2b edge portion 142b can be located inward of the side surface of the electromagnetic screen 130.

[0082] The guide member 140 may include an inclined surface 143. The inclined surface 143 may include a first inclined surface 143a and a second inclined surface 143b. The first inclined surface 143a may be configured to connect the first edge portion 141 and the second-a edge portion 142a, and the second inclined surface 143b may be configured to connect the first edge portion 141 and the second-b edge portion 142b. The first edge portion 141 and the second edge portion 142 may be configured to have the same height. Therefore, the second inclined surface 143b may be formed to have a smaller inclination than the first inclined surface 143a. In other words, the second inclined surface 143b may be formed to be gentler than the first inclined surface 143a.

[0083] The guide member 140 can define a second area A2. The second area A2 can be configured to be smaller than the first area A1. Specifically, with respect to the inner surface 22 of the housing, the seconda edge 142a of the guide member 140 is located inward of the outer periphery 132 of the electromagnetic screen 130 or the end of the wedge-shaped portion 134. With respect to the inner surface 22 of the screen housing 20, the secondb edge 142b is located inward of the outermost wedge-shaped portion 134 or the side surface of the electromagnetic screen 130.

[0084] With this structure, the guide member 40 can guide the raw materials flowing into the screen housing 20 to further concentrate and flow toward the electromagnetic screen 130 , thereby improving the adsorption efficiency of the electromagnetic screen 130 .

[0085] While specific embodiments have been shown and described above, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various modifications and implement the present invention without departing from the spirit of the technical concept of the invention described in the technical solution.

Claims

1. A metal foreign matter separation device for separating metallic foreign matter from raw materials, wherein: The metal foreign body separation device comprises: a housing configured to allow the raw material to pass through; an electromagnet screen disposed inside the housing to absorb the foreign matter and form a first absorption region perpendicular to a moving direction of the raw material; and A guide member is disposed upstream of the flow of the raw material relative to the electromagnetic screen and forms an opening of a second area smaller than the first area, thereby guiding the raw material to the opening.

2. The metal foreign matter separation device according to claim 1, wherein: The guide member is configured such that the second region is located inside the first region.

3. The metal foreign matter separation device according to claim 1, wherein: The guide member is arranged along the inner surface of the housing.

4. The metal foreign matter separation device according to claim 1, wherein: The electromagnetic screen includes a plurality of electromagnetic screens arranged in an up-down direction. The guide member is arranged adjacent to the uppermost electromagnetic screen among the plurality of electromagnetic screens.

5. The metal foreign matter separation device according to claim 4, wherein: The guide member is configured to contact the upper surface of the uppermost electromagnetic screen.

6. The metal foreign matter separation device according to claim 1, wherein: The guide member comprises: a first edge portion disposed along an inner surface of the housing; a second edge portion forming the second region; and An inclined surface is formed to be inclined downward from the first edge portion toward the second edge portion to guide the raw material.

7. The metal foreign matter separation device according to claim 6, wherein: The second edge portion is configured to be located on an inner side of the inner surface of the housing than an outer periphery of the electromagnetic screen.

8. The metal foreign matter separation device according to claim 1, wherein: The guide member is formed in a ring shape along the inner surface of the housing.

9. The metal foreign matter separation device according to claim 1, wherein: The electromagnet screen comprises: a peripheral portion formed in a ring shape; and a plurality of screen members arranged inside the outer peripheral portion, The second region is configured to be smaller than the outer peripheral portion.

10. The metal foreign matter separation device according to claim 1, wherein: The guide member comprises: a first edge portion disposed along an inner surface of the housing; and The second edge portion forms the second region and is formed in a shape different from that of the first edge portion.

11. The metal foreign matter separation device according to claim 10, wherein: The electromagnetic screen includes a plurality of electromagnetic screens arranged in an up-down direction. The plurality of electromagnetic screens include a first electromagnetic screen and a second electromagnetic screen, wherein the first electromagnetic screen and the second electromagnetic screen are configured to form a pair of blank areas between the two sides and the inner surface of the housing, and are arranged in an up-down direction. The first electromagnetic screen and the second electromagnetic screen are respectively formed with a first direction and a second direction spaced at a predetermined angle from the first direction as their longitudinal directions.

12. The metal foreign matter separation device according to claim 11, wherein: The second edge portion is configured to correspond to the shape of the first electromagnetic screen.

13. The metal foreign matter separation device according to claim 10, wherein: The guide member comprises: a first inclined surface formed to be inclined downward from the first edge portion toward the second edge portion; and The second inclined surface is connected to a second edge portion that is formed to protrude from the inner surface of the housing more than the adjacent second edge portion and has a gentler inclination than the first inclined surface.

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