Inverted cone table magnetic separator

Abstract

The present invention discloses an inverted cone-shaped magnetic separator, which relates to the technical field of magnetic separators, and includes a shell, a cylinder and a magnetic system. The cylinder is a cone-shaped structure, and the upper bottom surface is larger than the lower bottom surface; the magnetic system is arranged in the cylinder, and can rotate relative to the cylinder, and form a magnetic field acting on the magnetic material at the outer wall of the cylinder; the cylinder is arranged inside the shell. The inverted cone-shaped magnetic separator provided by the present invention has a large magnetic separation area, which can effectively reduce the thickness of the material on the surface of the cylinder during magnetic separation, effectively remove non-magnetic inclusions, and improve the concentrate grade.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic separators, in particular to an inverted cone table magnetic separator. Background Art

[0002] Magnetic separation is a method of separating useful minerals from other minerals based on their magnetic properties.

[0003] The existing magnetic separators have short selection areas, low magnetic separation efficiency and poor magnetic separation quality. For example, in the drum magnetic separator, due to the constant magnetic field and high magnetic field intensity, there is a large magnetic agglomeration effect in the separation process of magnetite and gangue. Although this magnetic agglomeration is loosened during the polarity alternation process, due to the extremely short loosening time, some non-magnetic particles wrapped in the magnetic particle group cannot be completely separated, so there are so-called non-magnetic inclusions, and the concentrate obtained after ore separation has a low grade. Summary of the invention

[0004] The purpose of the present invention is: to address the above-mentioned problems, the present invention provides an inverted cone-shaped magnetic separator with a large magnetic separation area, which can effectively reduce the thickness of the material on the surface of the cylinder during magnetic separation, effectively remove non-magnetic inclusions, and improve the grade of the concentrate.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The inverted cone-shaped magnetic separator comprises a shell, a cylinder and a magnetic system. The cylinder is a cone-shaped structure, and the upper bottom surface is larger than the lower bottom surface. The magnetic system is arranged in the cylinder and can rotate relative to the cylinder, and forms a magnetic field on the outer wall of the cylinder to act on the magnetic material. The cylinder is arranged inside the shell.

[0007] Furthermore, the magnetic blocks in the magnetic system are arranged in an alternating manner along the circumferential direction, and the magnetic blocks with the same magnetic poles form magnetic block groups with a spiral structure along the axis of the cylinder, and the magnetic poles of adjacent magnetic block groups are arranged in an alternating manner.

[0008] Furthermore, the magnetic blocks on the same horizontal plane are of equal size and are evenly distributed on the rotating body along the circumferential direction, and the sizes of the magnetic blocks decrease successively from top to bottom along the axial direction.

[0009] Furthermore, a rotating shaft is provided along the axial direction of the cylinder, a rotating body matching the cylinder is provided on the rotating shaft, the magnetic system is provided on the outer wall of the rotating body and can rotate with the rotating body, and a gap is provided between the magnetic system and the inner wall of the cylinder.

[0010] Furthermore, the cylinder is provided with a cylinder driving device which can drive the cylinder to rotate around the axis.

[0011] Furthermore, the shell is provided with a feed port, a concentrate discharge port and a tailings discharge port, the feed port matches the upper bottom surface of the cylinder, the concentrate discharge port matches the lower bottom surface of the cylinder, and the tailings discharge port surrounds the concentrate discharge port.

[0012] Furthermore, an adjusting plate is provided between the concentrate discharge port and the tailings discharge port.

[0013] Furthermore, the feed port is an annular structure coaxial with the cylinder, the side wall of the feed port is a conical structure matching the cylinder, the feed port is arranged in an annular shape on the cylinder, and the bottom end of the feed port overlaps with the top end of the cylinder.

[0014] Furthermore, the bottom end of the feed port matches the tailings discharge port in the vertical direction.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The present invention adopts a rotating magnetic system structure to increase the turnover of magnetic materials on the surface of the cylinder, effectively remove magnetic inclusions, and improve the grade of concentrate.

[0017] 2. The magnetic separation area of ​​the present invention is large, and the entire side wall of the cylinder is the magnetic separation area. Under the same processing capacity, the thickness of the material on the drum surface during magnetic separation can be effectively reduced, further reducing inclusions.

[0018] 3. When the present invention is in operation, the magnetic ore moves from the upper bottom surface to the magnetic ore along the outer wall of the cylinder under the action of the magnetic field force and gravity. Since the cylinder is in an inverted frustum-shaped structure, after the magnetic ore accumulates at the lower bottom surface, the magnetic field force of the outer layer of material is reduced and it falls to the concentrate discharge port and is discharged as concentrate. The non-magnetic ore falls directly to the tailings discharge port under the action of gravity and centrifugal force and is discharged as tailings.

[0019] 4. The present invention can adjust the content of concentrate and tailings by adjusting the position of the regulating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the inverted cone table magnetic separator of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the magnetic system arrangement of the present invention.

[0022] Markings in the figure: 1-magnetic system, 101-magnetic block, 2-cylinder, 201-upper bottom surface, 202-lower bottom surface, 3-shell, 301-feeding port, 302-concentrate discharge port, 303-tailings discharge port, 4-material, 401-magnetic ore, 402-non-magnetic ore, 5-rotating body, 6-rotating shaft, 7-adjusting plate. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Example 1

[0026] Inverted cone table magnetic separator, such as Figure 1-2 As shown, it includes a shell 3, a cylinder 2 and a magnetic system 1. The cylinder 2 is a truncated cone structure, and the upper bottom surface 201 is larger than the lower bottom surface 202; the magnetic system 1 is arranged in the cylinder 2 and can rotate relative to the cylinder 2, and forms a magnetic field acting on the magnetic material 401 at the outer wall of the cylinder 2; the cylinder 2 is arranged inside the shell 3.

[0027] Specifically, the magnetic separation area is large, and the entire side wall of the cylinder 2 is the magnetic separation area. Compared with the traditional cylinder magnetic separator, under the same processing capacity, the thickness of the material 4 on the drum surface during magnetic separation can be effectively reduced, further reducing inclusions.

[0028] The magnetic blocks 101 in the magnetic system 1 are arranged in an alternating manner along the circumferential direction. The magnetic blocks 101 with the same magnetic poles form a group of magnetic blocks 101 with a spiral structure along the axial direction of the cylinder 2. The magnetic poles of adjacent groups of magnetic blocks 101 are arranged in an alternating manner.

[0029] The magnetic blocks 101 on the same horizontal plane are of equal size and are evenly distributed on the rotating body 5 along the circumferential direction. The sizes of the magnetic blocks 101 decrease from top to bottom along the axial direction.

[0030] A rotating shaft 6 is provided along the axial direction of the cylinder 2 , and a rotating body 5 matching the cylinder 2 is provided on the rotating shaft 6 . The magnetic system 1 is provided on the outer wall of the rotating body 5 and can rotate with the rotating body 5 . There is a gap between the magnetic system 1 and the inner wall of the cylinder 2 .

[0031] The cylinder 2 is provided with a cylinder 2 driving device which can drive the cylinder 2 to rotate around an axis.

[0032] Specifically, the magnetic system 1 rotates relative to the cylinder 2 under the drive of the rotating shaft 6, and the cylinder 2 can rotate around the axis under the action of the driving device, and can rotate around the axis of the magnetic system 1. The rotation direction of the cylinder 2 can be consistent with or opposite to the rotation direction of the magnetic system 1. When the rotation direction of the cylinder 2 is opposite to the rotation direction of the magnetic system 1, the turning of the magnetic material 401 on the surface of the cylinder 2 can be increased, the magnetic inclusions can be effectively removed, and the concentrate grade can be improved.

[0033] The shell 3 is provided with a feed port 301 , a concentrate discharge port 302 and a tailings discharge port 303 . The feed port 301 matches the upper bottom surface 201 of the cylinder 2 , the concentrate discharge port 302 matches the lower bottom surface 202 of the cylinder 2 , and the tailings discharge port 303 surrounds the concentrate discharge port 302 .

[0034] An adjusting plate 7 is provided between the concentrate discharge port 302 and the tailing discharge port 303. Specifically, the content of the concentrate and tailings can be adjusted by adjusting the position of the adjusting plate 7.

[0035] The feed port 301 is an annular structure coaxial with the cylinder 2 , and the side wall of the feed port 301 is a conical structure matching the cylinder 2 . The feed port 301 is arranged in an annular manner on the cylinder 2 , and the bottom end of the feed port 301 overlaps with the top end of the cylinder 2 .

[0036] The bottom end of the feed port 301 matches the tailings discharge port 303 in the vertical direction.

[0037] During operation, the magnetic material 401 moves from the upper bottom surface 201 to the magnetic material 401 along the outer wall of the cylinder 2 under the action of the magnetic field force and gravity. Since the cylinder 2 is an inverted frustum-shaped structure, after the magnetic material 401 accumulates at the lower bottom surface 202, the magnetic field force of the outer layer of material 4 is reduced, and it falls to the concentrate discharge port 302 and is discharged as concentrate. The non-magnetic material 402 falls directly to the tailings discharge port under the action of gravity and centrifugal force and is discharged as tailings.

[0038] The principles and implementation methods of the present invention are described in this article using specific embodiments. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An inverted cone-shaped magnetic separator, comprising a housing (3), a cylinder (2) and a magnetic system (1), characterized in that: The cylinder (2) is a truncated cone structure, and the size of the upper bottom surface (201) is larger than the lower bottom surface (202); the magnetic system (1) is arranged in the cylinder (2) and can rotate relative to the cylinder (2), and forms a magnetic field acting on the magnetic material (401) at the outer wall of the cylinder (2); the cylinder (2) is arranged inside the shell (3); the magnetic blocks (101) in the magnetic system (1) are arranged in an alternating manner along the circumferential direction, and the magnetic blocks (101) with the same magnetic poles form a group of magnetic blocks (101) with a spiral structure along the axial direction of the cylinder (2), and the magnetic blocks (101) of adjacent groups are arranged in a spiral manner. The poles are arranged alternately and spaced apart; the magnetic blocks (101) on the same horizontal plane are equal in size and are evenly distributed on the rotating body (5) along the circumferential direction, and the size of the magnetic blocks (101) decreases from top to bottom along the axial direction; the magnetic material (401) moves from the upper bottom surface (201) to the lower bottom surface (202) along the outer wall of the cylinder (2) under the action of the magnetic field force and gravity, and the magnetic field force at the lower bottom surface decreases, and the outer layer material (4) falls to the concentrate discharge port (302) and is discharged as concentrate, and the non-magnetic material (402) falls directly to the tailings discharge port under the action of gravity and centrifugal force and is discharged as tailings.

2. The inverted cone table magnetic separator according to claim 1, characterized in that: A rotating shaft (6) is provided along the axial direction of the cylinder (2), a rotating body (5) matching the cylinder (2) is provided on the rotating shaft (6), the magnetic system (1) is provided on the outer wall of the rotating body (5) and can rotate with the rotating body (5), and a gap is provided between the magnetic system (1) and the inner wall of the cylinder (2).

3. The inverted cone table magnetic separator according to any one of claims 1 to 2, characterized in that: The cylinder (2) is provided with a cylinder (2) driving device capable of driving the cylinder (2) to rotate around an axis.

4. The inverted cone table magnetic separator according to claim 1, characterized in that: The shell (3) is provided with a feed inlet (301), a concentrate discharge inlet (302) and a tailings discharge inlet (303); the feed inlet (301) matches the upper bottom surface (201) of the cylinder (2); the concentrate discharge inlet (302) matches the lower bottom surface (202) of the cylinder (2); and the tailings discharge inlet (303) surrounds the concentrate discharge inlet (302).

5. The inverted cone-shaped magnetic separator according to claim 4, characterized in that: An adjustment plate (7) is provided between the concentrate discharge port (302) and the tailings discharge port (303).

6. The inverted cone table magnetic separator according to claim 4, characterized in that: The bottom end of the feed port (301) matches the tailings discharge port (303) in the vertical direction.

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