Drum-type magnetic separation device capable of efficiently screening

Abstract

The utility model provides a drum-type magnetic separation device capable of efficiently screening, which is characterized in that an air blowing plate is arranged below a material distribution port, a first direction drum and a second direction drum positioned above the first direction drum are arranged between the air blowing plate and the material distribution port, the first direction drum is arranged close to a tailing discharge port, and the second direction drum is arranged close to a tailing discharge port. The second direction roller is arranged close to the concentrate discharging opening, a first magnetic attraction part is arranged on the portion, facing the lower portion of the blowing plate, of the first direction roller, a first discharging opening is formed in the portion, facing the upper portion of the second direction roller, of the first direction roller, and magnetic materials attracted by the first magnetic attraction part are guided out through the first discharging opening; a second magnetic attraction part is arranged on the portion, facing the lower portion of the first direction roller, of the second direction roller, the magnetic field intensity of the first magnetic attraction part is larger than that of the second magnetic attraction part, a second discharging opening is formed in the portion, facing the concentrate discharging opening, of the second direction roller, and magnetic materials attracted by the second magnetic attraction part are guided out through the second discharging opening.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic separators, in particular to a drum-type magnetic separation device capable of efficient screening. Background Art

[0002] Magnetic separator is a screening device used to remove iron powder from recycled powder particles. After the slurry flows into the tank through the feed box, the ore particles enter the feeding area of ​​the tank in a loose state under the action of the water flow of the feed water pipe. Under the action of the magnetic field, the magnetic ore particles are magnetically gathered to form "magnetic clusters" or "magnetic chains". The "magnetic clusters" or "magnetic chains" are affected by the magnetic force in the slurry and move toward the magnetic poles and are adsorbed on the cylinder. Since the polarity of the magnetic poles is arranged alternately along the rotation direction of the cylinder and is fixed during operation, the "magnetic clusters" or "magnetic chains" produce magnetic stirring due to the alternation of magnetic poles when the "magnetic clusters" or "magnetic chains" rotate with the cylinder. Non-magnetic minerals such as gangue mixed in the "magnetic clusters" or "magnetic chains" fall off during the turning, and the "magnetic clusters" or "magnetic lotuses" that are finally adsorbed on the surface of the cylinder are the concentrates.

[0003] At present, in the magnetic separator, the ore slurry enters the trough from the feed trough and reaches the bottom of the trough, and then the iron ore is screened out by the magnetic roller at the upper end of the trough. In this process, the iron ore may be deposited at the bottom of the trough due to gravity and cannot be screened by the ore dressing magnet, resulting in low iron separation efficiency and poor effect of the magnetic separator. Utility Model Content

[0004] The utility model aims to provide a drum-type magnetic separation device capable of efficient screening, wherein a first direction drum and a second direction drum are arranged at the bottom of a slot body, and magnetic materials are screened for a second time by the first direction drum and the second direction drum and guided to corresponding slots, thereby improving iron selection efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following solutions:

[0006] A drum-type magnetic separation device capable of efficient screening comprises a frame, a tank body arranged on the frame, a magnetic drum is arranged in the tank body, a feed tank is arranged on one side of the tank body, a concentrate tank is arranged on the other side of the tank body, a feed channel located below the magnetic drum is connected between the concentrate tank and the feed tank, a tailings tank located between the feed tank and the concentrate tank is arranged in the tank body, a material distribution port facing the magnetic drum is arranged in the feed channel, and concentrate discharge ports connected to the concentrate tank and the tailings tank are respectively arranged on both sides of the material distribution port. A material outlet and a tailings outlet, the concentrate outlet and the tailings outlet are both composed of the inner side wall of the feeding channel and a magnetic roller, a screening mechanism is arranged below the distribution outlet, the screening mechanism comprises a blowing plate arranged at the bottom of the feeding channel, the blowing plate blows toward the distribution outlet, and a first direction roller and a second direction roller located above the first direction roller are arranged between the blowing plate and the distribution outlet, the first direction roller is arranged close to the tailings outlet, and the second direction roller is arranged close to the concentrate outlet,

[0007] A first magnetic attraction part for absorbing magnetic materials is arranged below the first direction roller toward the blow plate, a first discharge port is arranged above the first direction roller toward the second direction roller, and the magnetic materials absorbed by the first magnetic attraction part are discharged through the first discharge port, and a second magnetic attraction part for absorbing magnetic materials is also arranged below the second direction roller toward the first direction roller, the magnetic field strength of the first magnetic attraction part is greater than the magnetic field strength of the second magnetic attraction part, and the second direction roller is used to screen the magnetic components discharged from the first discharge port, and a second discharge port is arranged above the second direction roller toward the concentrate discharge port, and the magnetic materials absorbed by the second magnetic attraction part are discharged through the second discharge port.

[0008] Furthermore, a first baffle is obliquely arranged above the first direction roller, and the first baffle is horizontally positioned between the inner side wall of the feeding channel where the tailings discharge port is located and the first direction roller, and the first baffle is obliquely arranged in the direction in which the inner side wall of the feeding channel where the tailings discharge port is located extends toward the first direction roller.

[0009] Furthermore, one end of the first baffle extends toward the first discharge port, and the other end of the first baffle is connected to the inner wall of the feeding channel where the tailings discharge port is located, and the first baffle is used to guide the magnetic material discharged from the first discharge port to the tailings discharge port.

[0010] Furthermore, a second baffle is arranged obliquely in the vertical direction between the first direction roller and the second direction roller, the second baffle is located behind the second direction roller in the horizontal direction, and the first baffle is arranged obliquely in the extension direction of the second direction roller toward the rear.

[0011] Furthermore, one end of the second baffle extends toward the second magnetic attraction portion, and the other end of the second baffle extends toward the back of the second direction roller. The second baffle is used to assist the second magnetic attraction portion in screening and adsorbing the magnetic material discharged from the first discharge port.

[0012] Furthermore, the bottom surface of the blowing plate is closely connected to the bottom surface of the feeding channel, an air pump is arranged outside the trough body, the air pump is connected to the blowing plate through an air inlet pipe, an air cavity is opened in the blowing plate, blowing holes are evenly distributed on the top surface of the blowing plate, and air inlet holes connected to the air inlet pipe are arranged on the bottom surface of the blowing plate.

[0013] Furthermore, an induction unloading rod is provided on one side of the magnetic drum, the induction unloading rod is located above the concentrate tank, and a flushing water pipe is provided on the surface of the magnetic drum above the induction unloading rod.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides a drum-type magnetic separation device capable of efficient screening, wherein a first direction drum and a second direction drum are arranged at the bottom of a tank body, and the magnetic material is screened for a second time by the first direction drum and the second direction drum and guided to the corresponding slot, thereby improving the iron selection efficiency. In addition, an air blowing plate is arranged below the first direction drum and the second direction drum, and the ore pulp at the bottom of the tank body is moved by the air blowing plate arranged at the bottom, thereby preventing the iron ore from being deposited at the bottom of the tank body due to gravity and unable to be screened by the ore dressing magnet, thereby causing the iron selection efficiency of the magnetic separator to be low and the effect to be poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a drum-type magnetic separation device capable of efficient screening in Example 1 of the utility model;

[0017] Figure 2 In the utility model embodiment 1 Figure 1 A partially enlarged structural schematic diagram;

[0018] Explanation of the reference numerals: 1-frame, 2-magnetic roller, 3-feed trough, 4-concentrate trough, 5-tailings trough, 6-feeding channel, 61-distribution port, 62-concentrate discharge port, 63-tailings discharge port, 7-screening mechanism, 71-blowing plate, 72-first direction roller, 73-second direction roller, 74-first baffle, 75-second baffle, 8-induction unloading rod, 9-flushing water pipe. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the implementation methods of the present invention are not limited thereto.

[0020] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", 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 utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The present invention is described in detail below with reference to the accompanying drawings and in combination with embodiments:

[0023] Example 1

[0024] At present, in the magnetic separator, the ore slurry enters the trough body from the feed trough 3 and reaches the bottom of the trough body, and then the iron ore is screened out by the magnetic roller 2 at the upper end of the trough body. In this process, the iron ore may be deposited at the bottom of the trough body due to gravity and cannot be screened by the ore dressing magnet, resulting in low iron separation efficiency and poor effect of the magnetic separator.

[0025] Therefore, the utility model provides a drum-type magnetic separation device capable of efficient screening, wherein a first direction drum 72 and a second direction drum 73 are arranged at the bottom of the tank body, and the magnetic materials are secondary screened by the first direction drum 72 and the second direction drum 73 and guided to the corresponding slot, thereby improving the iron selection efficiency.

[0026] Specifically, Figure 1 , Figure 2As shown, a drum-type magnetic separation device capable of efficient screening comprises a frame 1, a tank body arranged on the frame 1, a magnetic drum 2 is arranged in the tank body, a feed tank 3 is arranged on one side of the tank body, a concentrate tank 4 is arranged on the other side of the tank body, and a feeding channel 6 located below the magnetic drum 2 is connected between the concentrate tank 4 and the feed tank 3, a tailings tank 5 located between the feed tank 3 and the concentrate tank 4 is arranged in the tank body, a feed opening 61 facing the magnetic drum 2 is arranged in the feed channel 6, and a concentrate discharge opening 62 and a tailings discharge opening 63 connected to the concentrate tank 4 and the tailings tank 5 are respectively arranged on both sides of the feed opening 61, and the concentrate discharge opening 62 and the tailings discharge opening 63 are both formed by the inner side wall of the feed channel 6 and the magnetic drum 2;

[0027] A screening mechanism 7 is provided below the material distribution port 61, and the screening mechanism 7 includes a blowing plate 71 provided at the bottom of the feeding channel 6, and the blowing plate 71 blows toward the material distribution port 61, and a first direction roller 72 and a second direction roller 73 located above the first direction roller 72 are provided between the blowing plate 71 and the material distribution port 61, the first direction roller 72 is provided close to the tailings discharge port 63, and the second direction roller 73 is provided close to the concentrate discharge port 62;

[0028] The first direction roller 72 is provided with a first magnetic attraction part for absorbing magnetic materials toward the bottom of the blowing plate 71, and the first direction roller 72 is provided with a first discharge port toward the top of the second direction roller 73, and the magnetic materials absorbed by the first magnetic attraction part are discharged through the first discharge port. The second direction roller 73 is also provided with a second magnetic attraction part for absorbing magnetic materials toward the bottom of the first direction roller 72, and the magnetic field strength of the first magnetic attraction part is greater than the magnetic field strength of the second magnetic attraction part. The second direction roller 73 is used to screen the magnetic components discharged from the first discharge port, and the second direction roller 73 is provided with a second discharge port toward the top of the concentrate discharge port 62, and the magnetic materials absorbed by the second magnetic attraction part are discharged through the second discharge port. The purpose is to receive the magnetic material adsorbed and screened on the first direction roller 72 through the second direction roller 73. In this embodiment, the first direction roller 72 and the corresponding second direction roller 73 are arranged below the distribution port 61 to improve the screening efficiency of the magnetic separation device for the magnetic separation material. The first direction roller 72 adsorbs the magnetic material at the bottom through the first magnetic attraction part, and discharges the magnetic material adsorbed by the first magnetic attraction part through the first discharge port. The magnetic material after being discharged will be adsorbed by the second direction roller 73. Since the magnetic field strength of the first magnetic attraction part is greater than the magnetic field strength of the second magnetic attraction part, the first magnetic attraction part will adsorb a larger amount of magnetic material. When the second magnetic attraction part adsorbs the magnetic material discharged from the first discharge port, it will have a screening function for the magnetic material discharged from the first discharge port, that is, the magnetic material adsorbed by the second magnetic part is the magnetic material with stronger magnetism among the magnetic materials discharged from the first discharge port. Through the above arrangement, the magnetic material after the first screening can be screened for the second time to obtain a concentrate with stronger magnetism and be introduced toward the concentrate discharge port 62 through the second discharge port.

[0029] In another embodiment, the first magnetic part and the second magnetic part include a corrugated outer wall in a sine wave shape arranged on the outer edge of the cylinder wall of the first direction roller 72 and the second direction roller 73. The corrugated outer wall can increase the contact area with the material and improve the adsorption success rate. In addition, corresponding magnets are arranged inside the corrugated outer wall. The magnet of the first direction roller 72 has stronger magnetism, and the magnet of the second direction roller 73 has weaker magnetism.

[0030] Preferably, a first baffle 74 is obliquely arranged above the first direction roller 72, and the first baffle 74 is located between the inner side wall of the feeding channel 6 where the tailings discharge port 63 is located and the first direction roller 72 in the horizontal direction, and the first baffle 74 is obliquely arranged in the direction in which the inner side wall of the feeding channel 6 where the tailings discharge port 63 is located extends toward the first direction roller 72. The purpose is to guide the magnetic material discharged from the first discharge port to the tailings discharge port 63 through the first baffle 74.

[0031] Preferably, one end of the first baffle 74 extends toward the first discharge port, and the other end of the first baffle 74 is connected to the inner wall of the feeding channel 6 where the tailings discharge port 63 is located, and the first baffle 74 is used to guide the magnetic material discharged from the first discharge port to the tailings discharge port 63.

[0032] Preferably, a second baffle 75 is arranged obliquely in the vertical direction between the first direction roller 72 and the second direction roller 73, the second baffle 75 is located behind the second direction roller 73 in the horizontal direction, and the first baffle 74 is arranged obliquely in the direction in which the second direction roller 73 extends toward the rear. The purpose is to assist the second magnetic attraction part to screen and adsorb the magnetic material discharged from the first discharge port through the second baffle 75.

[0033] Preferably, one end of the second baffle 75 extends toward the second magnetic attraction portion, and the other end of the second baffle 75 extends toward the back of the second direction roller 73. The second baffle 75 is used to assist the second magnetic attraction portion in screening and adsorbing the magnetic material discharged from the first discharge port.

[0034] Preferably, the bottom surface of the blowing plate 71 is closely connected to the bottom surface of the feeding channel 6, an air pump is arranged outside the tank body, and the air pump is connected to the blowing plate 71 through an air inlet pipe, an air cavity is opened inside the blowing plate 71, blowing holes are evenly distributed on the top surface of the blowing plate 71, and an air inlet hole connected to the air inlet pipe is arranged on the bottom surface of the blowing plate 71.

[0035] Preferably, an induction unloading rod 8 is further provided on one side of the magnetic drum 2, and the induction unloading rod 8 is located above the concentrate tank 4, and a flushing water pipe 9 is provided on the surface of the magnetic drum 2 above the induction unloading rod 8. The purpose is to flush the water pipe 9 to

[0036] In this embodiment, the working process of the drum-type magnetic separation device is specifically as follows: when working, the magnetic separation device is started to rotate the magnetic drum 2, the first direction drum 72 and the second direction drum 73, wherein the rotation directions of the first direction drum 72 and the second direction drum 73 are the same, and the rotation directions of the magnetic drum 2 and the second direction drum 73 are opposite, and the air pump is synchronously started to blow the blowing plate 71 upward, and then the mineral material to be magnetically separated is poured into the feed trough 3, and the mineral material to be magnetically separated enters the trough body from the feeding channel 6, so that it is accumulated below the distribution port 61, that is, the bottom of the trough body, and the bottom mineral material located below the distribution port 61 is moved by blowing upwards through the blowing plate 71 to prevent it from settling, and the blowing plate 71 can also make the first direction drum 72 and the second direction drum 73 easier to attract the magnetic material, so that the magnetic material is lifted After reaching the first direction roller 72, the first direction roller 72 absorbs the corresponding magnetic material and outputs it toward the second direction roller 73 through the first discharge port, and a first baffle 74 and a second baffle 75 are arranged between the first direction roller 72 and the second direction roller 73. Under the blocking action of the first baffle 74 and the second baffle 75, the magnetic material discharged from the first discharge port is guided toward the first baffle 74, so that it rises along the first baffle 74, and in the process of rising, the second direction roller 73 will perform a secondary screening on the magnetic material on the first baffle 74, and perform a second screening through the second magnetic attraction part, that is, the magnetic material corresponding to the second direction roller 73 is screened out from the magnetic material adsorbed by the first direction roller 72 for adsorption, and the concentrate is accurately obtained during the screening process and guided to the concentrate discharge port 62 from the second discharge port.

[0037] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A drum-type magnetic separation device capable of efficient screening, comprising a frame (1), a tank body arranged on the frame (1), a magnetic drum (2) being arranged in the tank body, a feed trough (3) being arranged on one side of the tank body, a concentrate trough (4) being arranged on the other side of the tank body, and a feeding channel (6) located below the magnetic drum (2) being connected between the concentrate trough (4) and the feed trough (3), a tailings trough (5) located between the feed trough (3) and the concentrate trough (4) being arranged in the tank body, a feed opening (61) facing the magnetic drum (2) being arranged in the feed channel (6), and a concentrate discharge opening (62) and a tailings discharge opening (63) connected to the concentrate trough (4) and the tailings trough (5) being arranged on both sides of the feed opening (61), the concentrate discharge opening (62) and the tailings discharge opening (63) being respectively formed by the inner side wall of the feed channel (6) and the magnetic drum (2), characterized in that: A screening mechanism (7) is arranged below the material distribution opening (61), and the screening mechanism (7) comprises a blowing plate (71) arranged at the bottom of the feeding channel (6), and the blowing plate (71) blows air toward the material distribution opening (61), and a first direction roller (72) and a second direction roller (73) located above the first direction roller (72) are arranged between the blowing plate (71) and the material distribution opening (61), the first direction roller (72) is arranged close to the tailings discharge opening (63), and the second direction roller (73) is arranged close to the concentrate discharge opening (62), The first direction roller (72) is provided with a first magnetic attraction portion for absorbing magnetic materials toward the bottom of the blowing plate (71); the first direction roller (72) is provided with a first discharge port toward the top of the second direction roller (73); the magnetic materials absorbed by the first magnetic attraction portion are discharged through the first discharge port; the second direction roller (73) is also provided with a second magnetic attraction portion for absorbing magnetic materials toward the bottom of the first direction roller (72); the magnetic field strength of the first magnetic attraction portion is greater than the magnetic field strength of the second magnetic attraction portion; the second direction roller (73) is used to screen the magnetic components discharged from the first discharge port; the second direction roller (73) is provided with a second discharge port toward the top of the concentrate discharge port (62); the magnetic materials absorbed by the second magnetic attraction portion are discharged through the second discharge port.

2. A drum-type magnetic separation device capable of efficient screening according to claim 1, characterized in that: A first baffle (74) is obliquely arranged above the first direction roller (72); the first baffle (74) is located between the inner side wall of the feeding channel (6) where the tailings discharge port (63) is located and the first direction roller (72) in the horizontal direction; the first baffle (74) is obliquely arranged in the direction in which the inner side wall of the feeding channel (6) where the tailings discharge port (63) is located extends toward the first direction roller (72).

3. A drum-type magnetic separation device capable of efficient screening according to claim 2, characterized in that: One end of the first baffle (74) extends toward the first discharge port, and the other end of the first baffle (74) is connected to the inner side wall of the feeding channel (6) where the tailings discharge port (63) is located, and the first baffle (74) is used to guide the magnetic material discharged from the first discharge port to the tailings discharge port (63).

4. The drum-type magnetic separation device capable of efficient screening according to claim 2, characterized in that: A second baffle (75) is arranged obliquely in the vertical direction between the first direction roller (72) and the second direction roller (73); the second baffle (75) is located behind the second direction roller (73) in the horizontal direction; and the first baffle (74) is arranged obliquely in the direction in which the second direction roller (73) extends toward the rear.

5. A drum-type magnetic separation device capable of efficient screening according to claim 4, characterized in that: One end of the second baffle (75) extends toward the second magnetic attraction portion, and the other end of the second baffle (75) extends toward the rear of the second direction roller (73). The second baffle (75) is used to assist the second magnetic attraction portion in screening and adsorbing the magnetic material discharged from the first discharge port.

6. The drum-type magnetic separation device capable of efficient screening according to claim 1, characterized in that: The bottom surface of the blowing plate (71) is closely connected to the bottom surface of the feeding channel (6); an air pump is arranged outside the tank body, and the air pump is connected to the blowing plate (71) through an air inlet pipe; an air cavity is provided inside the blowing plate (71); blowing holes are evenly distributed on the top surface of the blowing plate (71); and an air inlet hole connected to the air inlet pipe is arranged on the bottom surface of the blowing plate (71).

7. The drum-type magnetic separation device capable of efficient screening according to claim 1, characterized in that: An induction unloading rod (8) is also provided on one side of the magnetic drum (2), the induction unloading rod (8) is located above the concentrate tank (4), and a flushing water pipe (9) is provided on the surface of the magnetic drum (2) above the induction unloading rod (8).

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