Intelligent beneficiation plant based on coarse high-grade garnet concentrate

Abstract

The application provides an intelligent beneficiation equipment based on coarse high-grade garnet concentrate, and relates to the field of beneficiation equipment, which aims to solve the problem that the magnetic product obtained by magnetic separation needs to be unloaded by demagnetization, and the demagnetization and magnetic action are repeatedly performed, so that the magnetic separation efficiency is reduced, the equipment failure rate is increased, and the single magnetic separation is difficult to separate high-quality concentrate products from the greater than 0.3mm lujilite ore according to the color difference of the mineral, and the application comprises a beneficiation chassis, vertical support vertical plates are fixedly arranged on the left and right sides of the front end of the beneficiation chassis, and a control box is fixedly installed in the middle of the right end side wall of the right support vertical plate. The application can effectively improve the separation effect of -1.2+0.3mm materials, the grade of the garnet concentrate obtained by the conventional gravity-magnetic separation process can only reach about 80%, the color selection process can obtain the garnet concentrate with a grade of more than 98%, different quality garnet concentrate products can be obtained by adjusting the operation parameters according to the needs, and the process is flexible and controllable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ore dressing equipment, in particular to intelligent ore dressing equipment based on coarse high-grade garnet concentrate. BACKGROUND

[0002] Garnets can be specifically divided into magnesium-aluminum garnets, calcium-iron garnets, magnesium-iron garnets and the like, and have various colors, and common colors are dark red. The ore dressing method of garnets mainly includes magnetic separation and gravity separation. The iron-containing garnet ore can be separated by using a high magnetic field strength magnetic separator according to the magnetism, and the non-magnetic garnet ore needs to be separated by gravity separation.

[0003] The specific gravity of garnets is between 3.5 and 4.3, and there is a significant specific gravity difference between the associated gangue, so the gravity separation method is suitable for the ore dressing of part of the garnet ore. The iron-containing garnet ore belongs to a weak magnetic mineral, and the specific magnetization coefficient is similar to that of brown iron ore and hematite, so the high magnetic field strength magnetic separator can also obtain good ore dressing effect, and in the process of garnet gravity separation-magnetic separation, the coarse garnet on the upper layer after the shaking table separation is captured and separated by the strong magnetic separator, and the magnetic product obtained by the magnetic separation needs to be demagnetized to unload the ore, and the demagnetization and magnetic action are repeatedly performed, so that the magnetic separation efficiency is reduced, the equipment failure rate is high, and the single magnetic separation is difficult to separate the high-quality concentrate product from the garnetite ore with a particle size greater than 0.3 mm according to the color difference of the mineral. SUMMARY

[0004] Therefore, the application provides the intelligent ore dressing equipment based on coarse high-grade garnet concentrate, so as to solve the problems that the magnetic product obtained by the magnetic separation needs to be demagnetized to unload the ore, the demagnetization and magnetic action are repeatedly performed, the magnetic separation efficiency is reduced, the equipment failure rate is high, and the single magnetic separation is difficult to separate the high-quality concentrate product from the garnetite ore with a particle size greater than 0.3 mm according to the color difference of the mineral.

[0005] The application provides the intelligent ore dressing equipment based on coarse high-grade garnet concentrate, and specifically comprises an ore dressing chassis, vertical support plates are fixedly arranged on the left and right sides of the front end of the ore dressing chassis, a control box is fixedly installed in the middle of the right end side wall of the right support plate, front pressure seats are fixedly arranged between the upper ends of the two support plates opposite to each other, a magnetic separation connecting support plate is fixedly connected between the two front pressure seats, a gravity separation shaking table is horizontally rotatably installed on the middle part of the upper end of the ore dressing chassis through a rotating shaft, a slurry collecting box is connected to the bottom of the gravity separation shaking table, a driving frame is fixedly connected to the top of the rear end of the ore dressing chassis in a transverse mode, and a concentrate discharge plate is fixedly installed on the ore dressing chassis below the driving frame.

[0006] Optionally, the front pressing seat body is a "Fang" structure inclined backward and upward, and a cuboid pressing sliding block is slidingly installed in the groove of the front pressing seat.

[0007] Optionally, the rear end top edge of the magnetic separation connecting support plate is rotatably connected with a magnetic separation tongue plate through a hinge shaft. In a natural state, the magnetic separation connecting support plate and the magnetic separation tongue plate are in a straight plate structure. The left and right ends of the magnetic separation tongue plate are respectively provided with vertically penetrating longitudinal movable stroke holes. The left and right two movable stroke holes are respectively longitudinally slidingly provided with horizontally arranged T-shaped guide fins. The upper ends of the left and right two guide fins are fixedly connected with a cuboid counterweight box. A lead rod is horizontally arranged in the inner cavity of the counterweight box and can longitudinally slide. The left and right two ends of the lead rod are fixedly connected to the stop plates on the left and right end side walls of the inner cavity of the counterweight box. The left and right two guide fins are fixedly connected with an electromagnetic plate. The electromagnetic plate is longitudinally embedded and slidingly installed in the bottom plane of the magnetic separation tongue plate. The bottom plane of the electromagnetic plate is embedded in the bottom plane of the magnetic separation tongue plate. The top plane of the magnetic separation tongue plate is fixedly installed with discharge stop blocks at the left and right rear ends. The discharge stop blocks correspond to the left and right ends of the counterweight box. A control switch electrically connected with the electromagnetic plate is arranged in the front end groove of the discharge stop block. After the control switch is pressed, the electromagnetic plate is powered off.

[0008] Optionally, the bottom of the gravity shaking table is a mineral slurry sieve plate bent upward by 150 degrees at the rear end. The front end bending section of the gravity shaking table is at least three times the length of the rear end bending section. When the magnetic separation connecting support plate is at the lowermost position, the magnetic separation tongue plate is tangent to the rear end bending section of the mineral slurry sieve plate, and the hinge shaft connection of the magnetic separation tongue plate is just at the bending line of the mineral slurry sieve plate. The mineral slurry sieve plate is provided with a strip-shaped screening hole longitudinally. The left and right sides of the front end of the gravity shaking table are fixedly provided with front pressing lugs in the shape of a semicircle protruding upward. The upper end of the front pressing lug is always in contact with the lower end of the pressing sliding block. The left and right sides of the rear end of the gravity shaking table are respectively fixedly provided with rear pressing guide plates protruding upward.

[0009] Optionally, the middle front end of the driving frame is transversely rotatably installed with a driving shaft. The left side of the middle of the driving frame is fixedly installed with a speed reducer motor. The speed reducer motor is rotatably connected with the driving shaft. The left and right ends of the driving shaft are respectively fixedly connected with incomplete cams. The lower end of the cam is always in contact with the lug on the inner side of the rear pressing guide plate of the gravity shaking table. The inner side of the rear pressing guide plate is tangent to the outer side wall of the cam. The outer end of the cam is fixedly connected with a fixed connecting arm. The fixed connecting arm is at the middle position of the protruding part of the cam.

[0010] Optionally, the bending line of the mineral slurry collecting box is on the front side of the bending line of the mineral slurry sieve plate. The bending line of the mineral slurry collecting box is connected with a downward mineral slurry discharge pipe.

[0011] Optionally, the concentrate discharge plate is a structure inclined backward and downward, and the front end of the concentrate discharge plate is a structure curved upward.

[0012] Optionally, the width of the magnetic tongue plate is smaller than the width of the magnetic connection support plate.

[0013] Optionally, when the inner side of the rear pressure guide plate is at the cam convex position, the rear end of the gravity separation table is at the lowest position, the front end of the gravity separation table is at the highest position, the pressure slide block is at the highest position, the magnetic connection support plate is also at the highest position, the magnetic tongue plate is in a straight plate state with the magnetic connection support plate, the counterweight box slides backward to the discharge block, the electromagnetic plate is de-energized and demagnetized, and when the inner side of the pressure guide plate is at the short diameter part of the cam, the rear end of the gravity separation table is at the high position, the front end of the gravity separation table is at the lowest position, the pressure slide block is at the lowest position, the magnetic connection support plate is also at the lowest position, the magnetic tongue plate is tangent to the ore pulp sieve plate in a bent state, the electromagnetic plate slides forward to the limit position, and the electromagnetic plate is energized and has magnetism.

[0014] The present application has the following beneficial effects:

[0015] 1. The present application can realize the rotation of the reduction motor, drive the gravity separation table to shake the ore in front and back, move the coarse ore out synchronously by the magnetic connection support plate, and realize the quick discharge of the ore pulp collection box in the process of shaking, so as to achieve one movement with three effects, efficient mineral processing, and continuous gravity separation and magnetic separation operation.

[0016] 2. When the reduction motor works, the driving shaft can be rotated to drive the cam to rotate, the cam can extrude the gravity separation table, the rotation shaft of the gravity separation table at the lower end can be used as the rotation axis to reciprocatingly shake forward and backward, and the stable forward and backward shaking relationship can be formed through the pressure slide block and the pulling arm A, the pulling arm B and the fixed connecting arm, so that the ore can be put in front, the ore pulp sieve plate can be shaken forward and backward at the bending part, the ore pulp can be discharged into the ore pulp collection box below, and the coarse ore can be gathered at the bending part of the rear segment of the ore pulp sieve plate and be adsorbed and moved out by the electromagnetic plate, so as to realize the effect of quick and efficient ore selection.

[0017] 3. In the present application, the lead rod can move forward and backward according to the inclination angle of the magnetic tongue plate, so as to drive the counterweight box to move by the gravity and inertia generated by the movement, so as to realize the movement of the electromagnetic plate moving forward or backward, so as to realize the effects of magnetic adsorption of ore moving forward and demagnetization and discharge of ore moving backward.

[0018] 4、The electromagnetic plate can realize the purpose of unloading the ore to the concentrate discharge plate at the position of the rear side above the gravity table after moving back, so that the magnetic selection connecting support plate moves down, the magnetic selection tongue plate is partially bent to adsorb the ore, the magnetic selection connecting support plate moves up, the magnetic selection tongue plate is in a straight plate state with the magnetic selection connecting support plate, the electromagnetic plate moves back to demagnetize and unload the ore, the whole process is clear and explicit, and high-efficiency intelligent ore screening can be realized.

[0019] 5、The application can effectively improve the separation effect of 1.2-0.3mm materials, and the garnet concentrate grade obtained by the conventional gravity-magnetic separation process can only reach about 80%, while the garnet concentrate grade obtained by the color selection process can reach more than 98%, and different quality garnet concentrate products can be obtained according to the need of adjusting the operation parameters, and the process is flexible and controllable. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings described in the following description only relate to some embodiments of the application, and are not a limitation of the application.

[0022] In the drawings:

[0023] Figure 1 is a right front upper axial view structural schematic diagram of the embodiment of the application.

[0024] Figure 2 is a left rear upper axial view structural schematic diagram of the embodiment of the application.

[0025] Figure 3 is a right front lower axial view structural schematic diagram of the embodiment of the application.

[0026] Figure 4 is a front pressure seat and magnetic selection connecting support plate part upper separation state axial view structural schematic diagram of the embodiment of the application.

[0027] Figure 5 is a magnetic selection connecting support plate and front pressure seat part axial view structural schematic diagram of the embodiment of the application.

[0028] Figure 6 is an electromagnetic plate and guide fin block part upper separation state axial view structural schematic diagram of the embodiment of the application.

[0029] Figure 7 is a lead rod, counterweight box and electromagnetic plate separation state axial view structural schematic diagram of the embodiment of the application.

[0030] Figure 8 is a drive frame and beneficiation chassis separation state axial view structural schematic diagram of the embodiment of the application.

[0031] List of reference signs

[0032] 1, beneficiation chassis; 2, support vertical plate; 3, control box; 4, front pressing seat; 401, pressing sliding block; 402, pull arm A; 403, pull arm B; 404, fixed connecting rod; 5, magnetic separation connecting support plate; 501, magnetic selection tongue plate; 502, movable stroke hole; 503, electromagnetic plate; 504, guide fin block; 505, counterweight box; 506, lead rod; 507, discharge stop block; 6, gravity separation table; 601, ore pulp sieve plate; 602, front pressing lug; 603, rear pressing guide plate; 7, drive frame; 701, speed reduction motor; 702, drive shaft; 703, cam; 704, fixed connecting arm; 8, ore pulp collection box; 801, ore pulp discharge pipe; 9, concentrate discharge plate. Embodiment

[0033] In order to make the purpose, scheme and advantages of the technical scheme of the present application clearer, the technical scheme of the present application embodiment will be described clearly and completely below in combination with the drawings of the specific embodiments of the present application.

[0034] Please refer to Figures 1 to 8 As shown in the figure: Embodiment

[0035] The present application provides an intelligent beneficiation equipment based on coarse-grained high-grade garnet concentrate, which comprises a beneficiation chassis 1; the left and right sides of the front end of the beneficiation chassis 1 are respectively provided with a support vertical plate 2 which is vertically upwardly fixed; the right end side wall of the right support vertical plate 2 is fixedly installed with a control box 3; the upper ends of the left and right support vertical plates 2 are fixedly provided with a front pressing seat 4; the magnetic separation connecting support plate 5 is fixedly connected between the left and right two front pressing seats 4; the gravity separation table 6 is transversely rotatably installed on the upper end of the beneficiation chassis 1 through a rotating shaft; the ore pulp collection box 8 is connected to the bottom of the gravity separation table 6; the drive frame 7 is transversely fixedly connected to the top of the rear end of the beneficiation chassis 1; the concentrate discharge plate 9 is fixedly installed on the beneficiation chassis 1 below the drive frame 7.

[0036] The main body of the front pressing seat 4 is a " " shaped structure inclined upwardly and rearwardly, and the oblong pressing sliding block 401 is slidably installed in the groove of the front pressing seat 4, so that the pressing sliding block 401 can slide on the front pressing seat 4; the inner side wall of the pressing sliding block 401 is rotatably connected with the pull arm A 402 at the middle position through a pin shaft, and the other end of the pull arm A 402 is rotatably connected with the pull arm B 403 through a pin shaft; the fixed connecting rod 404 is fixedly connected between the left and right two pull arms B 403, and the sliding of the pressing sliding block 401 in the front pressing seat 4 can drive the pull arm A 402 to move, while the pull arm A 402 and the pull arm B 403 can be pulled to rotate with the fixed connecting arm 704, and cooperate with the rotation of the cam 703 to realize stable crank linkage movement.

[0037] The rear end top edge of the magnetic separation connecting support plate 5 is rotatably connected with a magnetic separation tongue plate 501 through a hinge shaft. In a natural state, the magnetic separation connecting support plate 5 and the magnetic separation tongue plate 501 are in a straight plate structure, and at this time, the ore to be adsorbed is transported and discharged downward. The left and right ends of the magnetic separation tongue plate 501 are respectively provided with vertically penetrating longitudinal movable stroke holes 502, and the left and right two movable stroke holes 502 are respectively longitudinally slidably connected with horizontally arranged T-shaped guide fins 504. The upper ends of the left and right two guide fins 504 are fixedly connected with a cuboid counterweight box 505. The inner cavity of the counterweight box 505 is horizontally provided with a longitudinally slidable lead rod 506. The left and right ends of the lead rod 506 are fixedly connected to the stop plates on the left and right end side walls in the inner cavity of the counterweight box 505. The lead rod 506 can move forward and backward in the counterweight box 505 according to the inclination angle of the magnetic separation tongue plate 501, so as to drive the counterweight box 505 to move by its own gravity and inertia generated by the movement, thereby realizing the forward or backward movement of the electromagnetic plate 503. The lower ends of the left and right two guide fins 504 are fixedly connected with the electromagnetic plate 503, which is longitudinally embedded and slidably installed in the bottom plane of the magnetic separation tongue plate 501. The bottom plane of the electromagnetic plate 503 is embedded in the bottom plane of the magnetic separation tongue plate 501. The top plane of the magnetic separation tongue plate 501 is fixedly installed with discharge blocks 507 at the rear end of the left and right sides. The discharge blocks 507 correspond to the left and right ends of the counterweight box 505, and the front end recesses of the discharge blocks 507 are embedded with control switches electrically connected with the electromagnetic plate 503. After the control switches are pressed, the electromagnetic plate 503 is powered off, and the ore can be unloaded to the concentrate discharge plate 9 after the electromagnetic plate 503 moves backward to the position above the gravity table 6, thereby realizing the downward movement of the magnetic separation connecting support plate 5, the partial bending of the magnetic separation tongue plate 501 to adsorb the ore, the upward movement of the magnetic separation connecting support plate 5, the straight plate state of the magnetic separation tongue plate 501 and the magnetic separation connecting support plate 5, and the backward movement of the electromagnetic plate 503 to demagnetize and unload the ore. The whole process is clear and explicit, and high-efficiency intelligent ore screening can be realized.

[0038] The bottom of the re-election rocking bed 6 is a pulp sieve plate 601 bent upward by 150 degrees at the rear end, and the front end bending section of the re-election rocking bed 6 is at least three times the length of the rear end bending section; when the magnetic separation connecting support plate 5 is at the lowest end position, the magnetic separation tongue plate 501 is tangent to the rear end bending section of the pulp sieve plate 601, and the hinge shaft connection of the magnetic separation tongue plate 501 is just at the bending line of the pulp sieve plate 601; a strip-shaped screening hole is longitudinally formed on the pulp sieve plate 601; the front end of the re-election rocking bed 6 is fixedly provided with a semicircular front pressing lug 602 on the left and right sides, and the upper end of the front pressing lug 602 is always in contact with the lower end of the pressure sliding block 401; the rear end of the re-election rocking bed 6 is fixedly provided with a rear pressing guide plate 603 on the left and right sides, the middle front end of the driving frame 7 is transversely rotatably provided with a driving shaft 702, the middle left of the driving frame 7 is fixedly provided with a speed reducer 701, the speed reducer 701 is rotatably connected with the driving shaft 702, and the left and right ends of the driving shaft 702 are respectively fixedly connected with an incomplete cam 703, the lower end of the cam 703 is always in contact with the lug on the inner side of the rear pressing guide plate 603 of the re-election rocking bed 6, and the inner side of the rear pressing guide plate 603 is tangent to the outer side wall of the cam 703; the outer end of the cam 703 is fixedly connected with a fixed connecting arm 704, the other end of the fixed connecting arm 704 is rotatably connected with the tail end of the pulling arm B403 through a pin shaft, and the fixed connecting arm 704 is at the middle position of the protruding part of the cam 703; when the speed reducer 701 works, the driving shaft 702 can be driven to rotate, the driving shaft 702 drives the cam 703 to rotate, the cam 703 extrudes the re-election rocking bed 6, so that the re-election rocking bed 6 is reciprocally rocked forward and backward with the rear end rotating shaft as the rotating axis, and a stable forward and backward rocking relationship is formed through the pressure sliding block 401 and the pulling arms A402 and B403 and the fixed connecting arm 704, so that the ore is put in from the front side, the ore on the pulp sieve plate 601 is rocked forward and backward at the bending position, the ore is discharged into the ore pulp collecting tank 8 below, and the coarse ore can be gathered at the rear bending position of the pulp sieve plate 601 and be adsorbed and removed by the electromagnetic plate 503, so that the effect of rapid and efficient ore selection is realized.

[0039] The bending line of the ore pulp collecting tank 8 is located on the front side of the bending line of the pulp sieve plate 601, and the bending line of the ore pulp collecting tank 8 is butt-jointed with a downward ore pulp discharge pipe 801, so that the ore pulp can flow forward and downward to be quickly discharged.

[0040] The fine ore discharge plate 9 is inclined downward, and the front end of the fine ore discharge plate 9 is upwardly curved, which helps to improve the discharge efficiency of the coarse ore.

[0041] The width of the magnetic separation tongue plate 501 is smaller than the width of the magnetic separation connecting support plate 5, so that the coarse ore can be prevented from falling off when being removed.

[0042] Embodiment two: the application provides an intelligent beneficiation equipment based on coarse high-grade garnet concentrate, including, when the inner side of the back pressure guide plate 603 is at the protruding position of the cam 703, the back end of the gravity separation shaking table 6 is at the lowest position, the front end of the gravity separation shaking table 6 is at the highest position, the pressure sliding block 401 is at the highest position, the magnetic separation connecting support plate 5 is also at the highest position, the magnetic separation tongue plate 501 is in a straight plate state with the magnetic separation connecting support plate 5, the counterweight box 505 slides to the discharge block 507, the electromagnetic plate 503 is powered off and demagnetized, and when the inner side of the pressure guide plate 603 is at the short diameter part of the cam 703, the back end of the gravity separation shaking table 6 is at the high position, the front end of the gravity separation shaking table 6 is at the lowest position, the pressure sliding block 401 is at the lowest position, the magnetic separation connecting support plate 5 is also at the lowest position, the magnetic separation tongue plate 501 is tangent to the ore pulp sieve plate 601 and is in a bent state, the electromagnetic plate 503 slides to the limit position, the electromagnetic plate 503 is powered on and has "magnetic properties", so that the speed reducing motor 701 can rotate, drive the gravity separation shaking table 6 to shake the ore screen forward and backward, move the coarse ore out synchronously, guide the ore pulp collection box 8 to be quickly discharged in the process of forward and backward shaking, achieve one movement with three effects, and have the effect of high-efficiency beneficiation.

[0043] The operation steps of the application in actual application are as follows: one, ore grinding: wet grinding the raw ore to-1.2 mm; two, classification: screening-1.2 mm ground ore products into-0.3 mm and-1.2+0.3 mm two levels through a screening system; three, beneficiation: obtaining ilmenite, garnet concentrate, omphalite concentrate and a small amount of slime through the shaking table gravity separation-magnetic separation process for-0.3 mm ore pulp; obtaining ilmenite, garnet concentrate, omphalite concentrate and a small amount of coarse tailings through the filtering-drying-three times of photoelectric color selection process for-1.2+0.3 mm ore pulp.

[0044] In the use process, the garnet ore is put from the front upper side of the gravity shaking table 6, the deceleration motor 701 is started, the driving shaft 702 is driven to rotate, the cam 703 is driven to rotate by the driving shaft 702, the cam 703 extrudes the gravity shaking table 6, the rotating shaft at the lower end of the gravity shaking table 6 is the rotating shaft and reciprocatingly shakes forward and backward, and the stable forward and backward shaking relationship is formed through the pressure sliding block 401 and the pulling arm A 402, the pulling arm B 403 and the fixed connecting arm 704, the ore pulp falls into the ore pulp collecting box 8 and is discharged, the left and right ends of the magnetic selection tongue plate 501 are respectively provided with the vertically penetrating longitudinal movable stroke hole 502, the left and right two movable stroke holes 502 are respectively longitudinally slidably clamped with the horizontally arranged T-shaped guide fin block 504, the upper ends of the left and right two guide fin blocks 504 are fixedly connected with the cuboid counterweight box 505, the lead rod 506 is horizontally arranged in the inner cavity of the counterweight box 505 and can longitudinally slide, the left and right two ends of the lead rod 506 are fixedly connected with the stop plate clamped on the left and right two end side walls in the inner cavity of the counterweight box 505, the lead rod 506 can move forward and backward in the counterweight box 505 according to the inclination angle of the magnetic selection tongue plate 501, so that the counterweight box 505 is driven to move by the gravity and the inertia generated by the movement, so that the electromagnetic plate 503 is moved forward or backward, and the coarse ore is concentrated at the bending part of the ore pulp sieve plate 601 and is adsorbed and moved backward by the electromagnetic plate 503 on the magnetic selection connecting support plate 5 and is discharged.

Claims

1. To obtain an intelligent beneficiation plant for coarse high-grade garnet concentrate, characterized by Include: The ore dressing chassis (1); the front end of the ore dressing chassis (1) is fixed with support vertical plate (2) on the left and right sides vertically upward respectively; the right end side wall of the right side of the support vertical plate (2) is fixedly installed with control box (3); the upper ends of the left and right two support vertical plates (2) are fixedly provided between the upper ends of the left and right two support vertical plates (2); the front pressure seat (4) is fixedly connected between the left and right two front pressure seats (4); the magnetic separation connecting support plate (5) is fixedly connected between the left and right two front pressure seats (4); the gravity separation table (6) is transversely rotatably installed on the upper end of the ore dressing chassis (1) through the shaft; the ore pulp collecting box (8) is connected to the bottom of the gravity separation table (6); the driving frame (7) is transversely fixedly connected to the top of the rear end of the ore dressing chassis (1); the concentrate discharge plate (9) is fixedly installed on the ore dressing chassis (1) below the driving frame (7); the main body of the front pressure seat (4) is inclined to the rear upper " " structure, the front pressure seat (4) is slidably installed in the groove of the front pressure seat (4); the pressure sliding block (401) is slidably installed in the groove of the front pressure seat (4); the pressure sliding block (401) is rotatably connected with the pulling arm A (402) through the pin shaft at the middle position of the inner side wall of the pressure sliding block (401); the other end of the pulling arm A (402) is rotatably connected with the pulling arm B (403) through the pin shaft; the fixed connecting rod (404) is fixedly connected between the left and right two pulling arm B (403); the magnetic selection tongue plate (501) is rotatably connected through the hinge shaft at the top edge of the rear end of the magnetic selection connecting support plate (5); in the natural state, the magnetic selection connecting support plate (5) and the magnetic selection tongue plate (501) are straight plate structures; the left and right ends of the magnetic selection tongue plate (501) are respectively provided with upper and lower through longitudinal movable stroke holes (502); the left and right two movable stroke holes (502) are respectively longitudinally slidably provided with horizontally arranged T-shaped guide fin blocks (504); the upper ends of the left and right two guide fin blocks (504) are fixedly connected with the cuboid counterweight box (505); the lead rod (506) is longitudinally slidably arranged in the inner cavity of the counterweight box (505); the left and right ends of the lead rod (506) are fixedly connected to the stop plates on the left and right end side walls of the inner cavity of the counterweight box (505); the electromagnetic plate (503) is fixedly connected between the lower ends of the left and right two guide fin blocks (504); the electromagnetic plate (503) is longitudinally embedded and slidably installed in the bottom plane of the magnetic selection tongue plate (501); the electromagnetic plate (503) is embedded in the bottom plane of the magnetic selection tongue plate (501); the discharge stop block (507) is symmetrically fixedly installed on the top plane rear end of the magnetic selection tongue plate (501); the discharge stop block (507) corresponds to the left and right ends of the counterweight box (505); the control switch is embedded in the front end groove of the discharge stop block (507) and is electrically connected with the electromagnetic plate (503); after the control switch is pressed, the electromagnetic plate (503) is powered off.

2. The intelligent beneficiation plant for obtaining coarse grained high grade garnet concentrate as claimed in claim 1 wherein: The bottom of the gravity shaking table (6) is a pulp sieve plate (601) which is bent 150 degrees upwards at the rear end, and the front end bending section of the gravity shaking table (6) is at least three times the length of the rear end bending section; when the magnetic separation connecting support plate (5) is at the lowest end position, the magnetic separation tongue plate (501) is tangent to the rear end bending section of the pulp sieve plate (601), and the hinge shaft connection of the magnetic separation tongue plate (501) is just at the bending line of the pulp sieve plate (601); the pulp sieve plate (601) is longitudinally provided with strip-shaped screening holes; the front end of the gravity shaking table (6) is fixedly provided with a semicircular front pressing lug (602) on the left and right sides, and the upper end of the front pressing lug (602) is always in contact with the lower end of the pressing sliding block (401); the rear end of the gravity shaking table (6) is fixedly provided with a rear pressing guide plate (603) on the left and right sides.

3. The intelligent beneficiation plant for obtaining coarse high grade garnet concentrate as claimed in claim 2 wherein said beneficiation plant comprises of: The middle part of the driving frame (7) is transversely rotatably provided with a driving shaft (702), the left part of the middle part of the driving frame (7) is fixedly provided with a speed reducer motor (701), the speed reducer motor (701) is rotatably connected with the driving shaft (702), and the left and right ends of the driving shaft (702) are respectively fixedly connected with an incomplete cam (703), the lower end of the cam (703) is always in contact with the lug on the inner side of the rear pressing guide plate (603) of the gravity shaking table (6), and the inner side of the rear pressing guide plate (603) is tangent to the outer side wall of the cam (703); the outer end of the cam (703) is fixedly connected with a fixed connecting arm (704), and the fixed connecting arm (704) is at the middle position of the protruding part of the cam (703).

4. The intelligent beneficiation plant for obtaining coarse high grade garnet concentrate as claimed in claim 2 wherein: The bending line of the pulp collecting tank (8) is in front of the bending line of the pulp sieve plate (601), and the bending line of the pulp collecting tank (8) is butt-jointed with a downward pulp discharge pipe (801).

5. The intelligent beneficiation plant for obtaining coarse grained high grade garnet concentrate as claimed in claim 1 wherein: The concentrate discharge plate (9) is inclined rearward and downward, and the front end of the concentrate discharge plate (9) is upwardly curved.

6. The intelligent beneficiation plant for obtaining coarse grained high grade garnet concentrate as claimed in claim 1 wherein: The width of the magnetic separation tongue plate (501) is smaller than the width of the magnetic separation connecting support plate (5).

7. The intelligent beneficiation plant for obtaining coarse grained high grade garnet concentrate as claimed in claim 3 wherein: When the inner side of the rear pressing guide plate (603) is at the protruding position of the cam (703), the rear end of the gravity shaking table (6) is at the lowest position, the front end of the gravity shaking table (6) is at the highest position, the pressing sliding block (401) is at the highest position, the magnetic separation connecting support plate (5) is also at the highest position, the magnetic separation tongue plate (501) is in a straight plate state, the counterweight box (505) slides to the discharge stopper (507), the electromagnetic plate (503) is de-energized and demagnetized, and when the inner side of the rear pressing guide plate (603) is at the minor diameter part of the cam (703), the rear end of the gravity shaking table (6) is at the high position, the front end of the gravity shaking table (6) is at the lowest position, the pressing sliding block (401) is at the lowest position, the magnetic separation connecting support plate (5) is also at the lowest position, the magnetic separation tongue plate (501) is tangent to the pulp sieve plate (601) and is in a bent state, the electromagnetic plate (503) slides to the limit position, and the electromagnetic plate (503) is energized.

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