Layered magnetic separation device for magnetic minerals and non-magnetic minerals

Abstract

The invention belongs to the technical field of mineral magnetic separation, and relates to a magnetic mineral and non-magnetic mineral layered magnetic separation device which comprises a base, an outer cylinder connected to the upper side of the base and an ore pulp bearing frame communicated to the bottom of the outer cylinder. A first magnetic system is arranged between each inner ring and the outer cylinder, and the multiple first magnetic systems are sequentially opened and closed from bottom to top so that magnetic minerals in the ore pulp bearing ores can be separated out through layered magnetic separation along the multiple inner rings. The multiple first magnetic systems are sequentially started and stopped from bottom to top so that magnetic minerals in ore pulp bearing ores can be separated out through layered magnetic separation along the multiple inner rings, and therefore the situation that non-magnetic minerals are accidentally taken away upwards due to loss generated by active movement is avoided; and magnetic minerals with small particle sizes can be effectively separated through magnetic separation according to the vertical gradient magnetic field change principle, and the magnetic separator is more suitable for the environment where minerals are thick such as red mud iron separation.

Description

Technical Field

[0001] The present invention belongs to the technical field of mineral magnetic separation, and in particular relates to a layered magnetic separation device for magnetic minerals and non-magnetic minerals. Background Art

[0002] Most existing magnetic separation equipment uses a rotating ring or drum wrapped in a magnetic system to rotate upward to absorb magnetic minerals from the magnetic area and move them to the non-magnetic area to complete the discharge. This solution requires the rotating ring to continuously rotate and contact the magnetic and non-magnetic minerals for magnetic separation. When the rotating ring is stationary, magnetic separation cannot be completed, and the energy consumption is relatively high. In addition, for red mud iron separation and other minerals in a relatively viscous environment, the mud is easily adhered to the rotating ring, causing the rotating ring to rotate and carry away the non-magnetic minerals, thus ineffective separation. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a stratified magnetic separation device for magnetic and non-magnetic minerals suitable for the relatively viscous environment of red mud iron and other minerals, which avoids active movement to carry away non-magnetic minerals.

[0004] In order to solve the above technical problems, the present invention provides a layered magnetic separation device for magnetic minerals and non-magnetic minerals, comprising a base, an outer cylinder connected to the upper side of the base and a pulp carrying frame connected to the bottom of the outer cylinder, the inner side of the outer cylinder is provided with a plurality of inner rings in a stacked manner, and adjacent inner rings are plugged and fitted together. There are a total of eight inner rings in the present application, and each inner ring is provided with a magnetic system 1 between the outer cylinder. The plurality of magnetic systems 1 are stacked up and down and the magnetic force of each magnetic system 1 gradually increases from bottom to top, and the plurality of magnetic systems 1 are opened and closed in sequence from bottom to top so that the magnetic minerals in the pulp-carrying ore are separated by layered magnetic separation along the plurality of inner rings; the upper part of the outer cylinder is connected to a top frame, so One side of the top frame is connected to a discharge frame extending outward, and the discharge frame is used to discharge the magnetic minerals separated by upward magnetic separation in the outer cylinder outward. A rotating ring rotates between the lower side of the top frame and the upper side of the uppermost inner ring. A magnetic system 2 is provided between the rotating ring and the outer cylinder, and the rotating ring is driven to rotate by a rotating drive group 1 provided on the outer cylinder. A magnetic mineral guide frame is connected to the top frame, which fits the inner side of the rotating ring and is spirally arranged. A channel is formed between the magnetic mineral guide frame and the rotating ring. The upper end of the magnetic mineral guide frame is located in the discharge frame, and the magnetic system 2 has a magnetic breaking notch near the discharge frame. The lower end of the magnetic mineral guide frame is flush with the lower side of the rotating ring.

[0005] Preferably, a feed pipe is provided between the base and the slurry carrying frame, the discharge end of the feed pipe extends into the slurry carrying frame, and a discharge pipe for discharging the slurry after magnetic separation is connected to one side of the lower part of the slurry carrying frame, and an electromagnetic valve is installed at the position where the discharge pipe is connected to the slurry carrying frame.

[0006] Preferably, the inner ring is in the shape of an inverted cone, and a plurality of inner rings stacked up and down form an entire inverted cone-shaped ring structure.

[0007] Preferably, the rotary drive group 1 includes a connecting ring connected to the outside of the rotating ring, the connecting ring is connected to a gear ring, a servo motor is installed on the upper left side of the outer cylinder, and the output shaft of the servo motor is connected to a spur gear meshing with the gear ring.

[0008] Preferably, the magnetic mineral guide frame includes a plurality of mounting rods connected to the inner side of the top frame, and a spiral rail is connected between the plurality of mounting rods, which fits the inner side of the swivel and is spirally arranged. The cross-sectional shape of the spiral rail is L-shaped, and a channel is formed between the spiral rail and the swivel. The upper end of the spiral rail is located in the discharge frame, and the lower end of the spiral rail is flush with the lower side of the swivel. The upper end of the spiral rail is connected to a baffle located on one side of the discharge frame.

[0009] Preferably, it also includes a rotating shaft that rotates through the slurry carrying frame, and the slurry carrying frame extends downward to provide more accommodating area for slurry loading. The rotating shaft is connected to a spiral blade located in the slurry carrying frame, and the rotating shaft is driven to rotate by a rotating drive group 2 provided on the slurry carrying frame.

[0010] Preferably, the discharge end of the feed pipe rotates and passes through the rotating shaft, and the discharge end of the feed pipe extends upward to the upper part of the slurry carrying frame.

[0011] Preferably, the second rotary drive group includes a drive motor installed on the lower side of the slurry carrying frame, the output shaft of the drive motor and the lower end of the rotating shaft are connected to bevel gears, the two bevel gears are engaged with each other, and the feed pipe rotates through the bevel gear on the rotating shaft.

[0012] Preferably, the outer ring of the spiral blade is inclined lower than the inner ring of the spiral blade, the inner ring of the spiral blade is close to the outer side of the rotating shaft, and the outer ring of the spiral blade is close to the inner side of the slurry carrying frame.

[0013] The present invention overcomes the shortcomings of the prior art and has the following beneficial effects: The plurality of magnetic systems are opened and closed in sequence from bottom to top so that the magnetic minerals in the ore carried by the slurry are separated by magnetic separation in layers along the plurality of inner rings. In this way, active movement will not cause loss and accidentally carry the non-magnetic minerals upward, and the principle of vertical gradient magnetic field change can be used to effectively separate magnetic minerals with smaller particle sizes. It is more suitable for the relatively viscous environment of minerals such as red mud iron separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an assembly diagram of the present invention.

[0015] Figure 2 It is a rear side schematic diagram of the present invention.

[0016] Figure 3 It is a bottom direction schematic diagram of the present invention.

[0017] Figure 4 It is a cross-sectional view of the outer cylinder and the slurry carrying frame of the present invention.

[0018] Figure 5 Schematic diagram of the inner ring and rotating ring of the present invention.

[0019] Figure 6 It is a schematic diagram of the rotating ring, discharge frame and magnetic mineral guide frame of the present invention.

[0020] Figure 7 It is a schematic diagram of the rear side of the magnetic system 2, the top frame and the discharge frame of the present invention.

[0021] Figure 8 Schematic diagram of the magnetic mineral guide frame of the present invention.

[0022] Figure 9 For the present invention Figure 4 A in the enlarged view.

[0023] Figure 10 It is a cross-sectional view of the slurry carrying frame, rotating shaft and spiral blades of the present invention.

[0024] The markings in the drawings provided by the present invention are: 1-base, 2-outer cylinder, 21-inner ring, 22-magnetic system 1, 23-rotating ring, 24-magnetic system 2, 240-magnetic breaking gap, 25-top frame, 26-discharge frame, 27-magnetic mineral guide frame, 271-mounting rod, 272-spiral rail, 273-shielding plate, 3-slurry carrying frame, 31-feed pipe, 32-discharge pipe, 41-connecting ring, 42-gear ring, 43-servo motor, 44-spur gear, 51-rotating shaft, 52-spiral blade, 53-drive motor, 54-bevel gear. DETAILED DESCRIPTION

[0025] The terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0026] A device for separating magnetic minerals from non-magnetic minerals by magnetic separation. Figure 1-Figure 7As shown, it includes a base 1, an outer cylinder 2 connected to the upper side of the base 1 and a pulp carrying frame 3 connected to the bottom of the outer cylinder 2, the inner side of the outer cylinder 2 is provided with a plurality of inner rings 21 in a stacked manner, and adjacent inner rings 21 are plugged and fitted together. There are a total of eight inner rings 21 in the present application, and each inner ring 21 is provided with a magnetic system 22 between it and the outer cylinder 2. The plurality of magnetic systems 22 are stacked up and down, and the magnetic force of each magnetic system 22 gradually increases from bottom to top. The plurality of magnetic systems 22 are opened and closed in sequence from bottom to top so that the magnetic minerals in the pulp-carrying ore are magnetically separated in layers along the plurality of inner rings 21. The magnetic system 22 is started to magnetically adsorb the magnetic minerals in the pulp in the pulp carrying frame 3 upward to the inner side of the lowest inner ring 21. When it is necessary to continuously magnetically separate the magnetic minerals upward, the lowest magnetic system 22 is closed. At this time, under the action of the second magnetic system 22 below (counted from bottom to top), the lowest The magnetic minerals on the inner side of the inner ring 21 will be magnetically attracted upward to the inner side of the second inner ring 21 below, so that the non-magnetic minerals will not be accidentally carried upward due to loss caused by active movement, and the magnetic minerals with smaller particle sizes can be effectively separated by magnetic separation using the principle of vertical gradient magnetic field change, which is more suitable for the relatively viscous environment of red mud iron separation and other minerals; and when the second magnetic system 1 22 below is closed and the magnetic minerals on the inner side of the second inner ring 21 below are magnetically attracted upward to the inner side of the third inner ring 21 below under the action of the third magnetic system 1 22 below, the bottom magnetic system 1 22 is kept closed, so as to prevent the magnetic minerals from being disturbed by the adjacent magnetic force below during the upward transfer process, and then until the third magnetic system 1 22 below is closed and the magnetic minerals on the inner side of the third inner ring 21 below are attracted upward to the inner side of the fourth inner ring 21 below, the bottom magnetic system 1 22 is started again, and magnetic separation is achieved in this reciprocating manner;The upper part of the outer cylinder 2 is connected to a top frame 25, and one side of the top frame 25 is connected to a discharge frame 26 extending outward. The discharge frame 26 is used to discharge the magnetic minerals separated by upward magnetic separation in the outer cylinder 2 outward. A rotating ring 23 is rotated between the lower side of the top frame 25 and the upper side of the uppermost inner ring 21. A magnetic system 24 is provided between the rotating ring 23 and the outer cylinder 2. When the uppermost magnetic system 22 is closed, the magnetic system 24 is used to magnetically adsorb the magnetic minerals on the inner side of the uppermost inner ring 21 upward to the inner side of the rotating ring 23. The rotating ring 23 is driven to rotate by a rotating drive group 1 provided on the outer cylinder 2. The top frame 25 is connected to a magnetic mineral guide frame 27 that fits the inner side of the rotating ring 23 and is spirally arranged. A passage is formed between the magnetic mineral guide frame 27 and the rotating ring 23. The upper end of the magnetic mineral guide frame 27 is located within the discharge frame 26. The rotation of the rotating ring 23 drives the magnetic minerals on its inner side, which are magnetically attracted by the second magnetic system 24, to gradually spiral upward along the magnetic mineral guide frame 27 to the discharge frame 26. The second magnetic system 24 has a magnetic cutoff notch 240 near the discharge frame 26. Therefore, the magnetic minerals on the rotating ring 23 that move to the discharge frame 26 are no longer magnetically attracted by the magnetic cutoff notch 240 in the second magnetic system 24 and are discharged from the discharge frame 26. The lower end of the magnetic mineral guide frame 27 is flush with the underside of the rotating ring 23, ensuring that the magnetic minerals on the rotating ring 23 are fully guided by the magnetic mineral guide frame 27.

[0027] like Figure 3 and Figure 4 As shown, it also includes a feed pipe 31 provided between the base 1 and the slurry carrying frame 3, the discharge end of the feed pipe 31 extends into the slurry carrying frame 3, and the slurry to be magnetically separated is transported to the slurry carrying frame 3 by the feed pipe 31. The lower side of the slurry carrying frame 3 is connected to a discharge pipe 32 for discharging the slurry after magnetic separation. A solenoid valve is installed at the position where the discharge pipe 32 is connected to the slurry carrying frame 3, and the opening and closing of the discharge pipe 32 is controlled by the solenoid valve.

[0028] As a preferred embodiment of this invention, Figure 3 and Figure 5 As shown, the inner ring 21 is in the shape of an inverted cone, and a plurality of inner rings 21 stacked up and down form an entire inverted cone-shaped ring structure. In this way, when the magnetic system 22 continuously magnetically separates the magnetic minerals upward, the conical slope on the inner side of the inner ring 21 is used to increase the supporting force of the magnetic minerals, thereby improving the effect of upward magnetic separation.

[0029] like Figure 4 and Figure 6As shown, the rotation drive group 1 includes a connecting ring 41 connected to the outside of the rotating ring 23, and a gear ring 42 is connected to the connecting ring 41. A servo motor 43 is installed on the upper left side of the outer cylinder 2. The output shaft of the servo motor 43 is connected to a spur gear 44 that meshes with the gear ring 42. The servo motor 43 is controlled to drive the spur gear 44 to rotate and mesh with the gear ring 42. The gear ring 42 will drive the rotating ring 23 to rotate through the connecting ring 41.

[0030] like Figure 8 and Figure 9 As shown, the magnetic mineral guide frame 27 includes a plurality of mounting rods 271 connected to the inner side of the top frame 25, and a spiral rail 272 is connected between the plurality of mounting rods 271, which fits the inner side of the rotating ring 23 and is spirally arranged. The cross-sectional shape of the spiral rail 272 is L-shaped, and a channel is formed between the spiral rail 272 and the rotating ring 23. The L-shaped spiral rail 272 is used to provide guiding support for the magnetically separated minerals on the inner side of the rotating ring 23. The upper end of the spiral rail 272 is located in the discharge frame 26, and the lower end of the spiral rail 272 is flush with the lower side of the rotating ring 23. The upper end of the spiral rail 272 is connected to a baffle 273 located on one side of the discharge frame 26. The baffle 273 prevents the magnetic minerals on the rotating ring 23 near the magnetic breaking notch 240 from accidentally falling back into the outer cylinder 2.

[0031] like Figure 4 and Figure 10 As shown, it also includes a rotating shaft 51 that rotates through the pulp carrying frame 3. The pulp carrying frame 3 extends downward to provide more accommodating area for pulp loading. The rotating shaft 51 is connected to a spiral blade 52 located in the pulp carrying frame 3. The rotating shaft 51 is driven to rotate by a rotating drive group 2 provided on the pulp carrying frame 3. The rotation of the rotating shaft 51 will drive the spiral blade 52 to rotate to continuously transport the pulp at the bottom of the pulp carrying frame 3 upward to near the inner ring 21, thereby improving the efficiency and effect of magnetic separation while increasing the accommodating area. The reverse rotation of the rotating shaft 51 will drive the spiral blade 52 to rotate in the reverse direction to continuously transport the pulp in the pulp carrying frame 3 downward to be discharged from the discharge pipe 32, thereby improving the discharge efficiency.

[0032] like Figure 10 As shown, the discharge end of the feed pipe 31 rotates and passes through the rotating shaft 51, and the discharge end of the feed pipe 31 extends upward to the upper part of the slurry supporting frame 3. The feed pipe 31 will discharge the slurry to be magnetically separated directly to the upper part of the slurry supporting frame 3 near the inner ring 21, further improving the efficiency and effect of magnetic separation.

[0033] like Figure 10As shown, the second rotary drive group includes a drive motor 53 installed on the lower side of the slurry carrying frame 3, and the output shaft of the drive motor 53 and the lower end of the rotating shaft 51 are connected to a bevel gear 54, and the two bevel gears 54 are engaged with each other. The feed pipe 31 rotates and passes through the bevel gear 54 on the rotating shaft 51. The drive motor 53 is controlled to drive the bevel gear 54 thereon to rotate and engage with the bevel gear 54 on the rotating shaft 51 to drive the rotating shaft 51 to rotate.

[0034] like Figure 10 As shown, the outer ring position of the spiral blade 52 is lower than the inner ring position of the spiral blade 52 in an inclined manner, the inner ring of the spiral blade 52 is close to the outer side of the rotating shaft 51, and the outer ring of the spiral blade 52 is close to the inner side of the slurry carrying frame 3; thus, the slurry to be magnetically separated discharged from the discharge pipe 32 will be guided by the spiral blade 52 to diffuse further outward and close to the inner ring 21, so that the magnetic minerals in the slurry are quickly magnetically separated by the magnetic system 22.

[0035] Obviously, the embodiments described above are only part of the embodiments of the present invention, rather than all the embodiments. They only express the preferred implementation methods of the present invention and the description is relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention.

[0036] It should be pointed out that, for ordinary technicians in this field, several variations, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A device for separating magnetic minerals and non-magnetic minerals by magnetic separation, comprising a base (1), an outer cylinder (2) connected to the upper side of the base (1), and a pulp carrying frame (3) connected to the bottom of the outer cylinder (2), characterized in that: The inner side of the outer cylinder (2) is provided with a plurality of inner rings (21) in a stacked manner, and a magnetic system (22) is provided between each inner ring (21) and the outer cylinder (2). The plurality of magnetic systems (22) are opened and closed in sequence from bottom to top so that the magnetic minerals in the ore carried by the slurry are magnetically separated along the plurality of inner rings (21). The upper part of the outer cylinder (2) is connected to a top frame (25), one side of the top frame (25) is connected to a discharge frame (26), and a rotating ring (23) is rotated between the top frame (25) and the upper side of the uppermost inner ring (21). A second magnetic system (24) is provided between the rotating ring (23) and the outer cylinder (2), and the rotating ring (23) is driven to rotate by a rotary drive group (1) provided on the outer cylinder (2). The top frame (25) is connected with a magnetic mineral guide frame (27) which is in contact with the inner side of the rotating ring (23) and is spirally arranged. The upper end of the magnetic mineral guide frame (27) is located in the discharge frame (26). The second magnetic system (24) has a magnetic breaking notch (240) at a position close to the discharge frame (26). The lower end of the magnetic mineral guide frame (27) is flush with the lower side of the rotating ring (23).

2. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 1, characterized in that: The invention also includes a feed pipe (31) provided between the base (1) and the slurry carrying frame (3), wherein a discharge end of the feed pipe (31) extends into the slurry carrying frame (3), and a discharge pipe (32) is connected to one side of the lower portion of the slurry carrying frame (3), and a solenoid valve is installed on the discharge pipe (32).

3. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 1, characterized in that: The inner ring (21) is in the shape of an inverted cone, and a plurality of inner rings (21) stacked up and down form an entire inverted cone-shaped ring structure.

4. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 1, characterized in that: The first rotary drive group includes a connecting ring (41) connected to the outside of the rotating ring (23), a gear ring (42) connected to the connecting ring (41), a servo motor (43) installed on the left side of the upper part of the outer cylinder (2), and a spur gear (44) meshing with the gear ring (42) connected to the output shaft of the servo motor (43).

5. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 1, characterized in that: The magnetic mineral guide frame (27) includes a plurality of mounting rods (271) connected to the inner side of the top frame (25), and a spiral rail (272) is connected between the plurality of mounting rods (271) and is arranged spirally and fits the inner side of the rotating ring (23). The cross-section of the spiral rail (272) is L-shaped, the upper end of the spiral rail (272) is located in the discharge frame (26), the lower end of the spiral rail (272) is flush with the lower side of the rotating ring (23), and the upper end of the spiral rail (272) is connected to a shielding plate (273) located on one side of the discharge frame (26).

6. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 2, characterized in that: The invention also includes a rotating shaft (51) rotating in the pulp carrying frame (3), the pulp carrying frame (3) extending downward, the rotating shaft (51) being connected to a spiral blade (52) located in the pulp carrying frame (3), and the rotating shaft (51) being driven to rotate by a rotary drive group 2 provided on the pulp carrying frame (3).

7. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 6, characterized in that: The discharge end of the feed pipe (31) rotates and passes through the rotating shaft (51), and the discharge end of the feed pipe (31) extends upward to the upper part of the slurry carrying frame (3).

8. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 6, characterized in that: The second rotary drive group includes a drive motor (53) installed on the lower side of the slurry carrying frame (3), and the output shaft of the drive motor (53) and the lower end of the rotating shaft (51) are both connected to bevel gears (54), and the two bevel gears (54) are meshed with each other.

9. The device for separating magnetic minerals and non-magnetic minerals by magnetic separation according to claim 6, characterized in that: The outer ring position of the spiral blade (52) is lower than the inner ring position of the spiral blade (52) in an inclined manner, the inner ring of the spiral blade (52) is close to the outer side of the rotating shaft (51), and the outer ring of the spiral blade (52) is close to the inner side of the slurry carrying frame (3).

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