Bauxite flotation tailing settling separation device and method

Abstract

The invention belongs to the technical field of bauxite beneficiation, and particularly relates to a bauxite flotation tailing settling separation device and method.The bauxite flotation tailing settling separation device comprises a separation box, a motor is fixedly installed above the separation box, the output end of the motor extends into the separation box and is fixedly provided with a driving gear, and a filtering frame is rotationally installed in the separation box; and a plurality of filtering holes are formed in the peripheral side wall of the filtering frame, the outer wall of the filtering frame is sleeved with a gear ring, the gear ring is meshed with the driving gear, and a partition plate is fixedly installed in the separation box. By arranging the filter frame, the filter frame is driven to rotate before the tailings are subjected to settling separation, so that large particles in the bauxite flotation tailings are left in the filter frame, small particles and slurry are thrown out of the filter frame under the action of centrifugal force, and the bauxite flotation tailings are subjected to primary separation; follow-up large particles are prevented from generating turbulent flow under the action of inertia, and the follow-up settling separation effect on tailings is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bauxite beneficiation, and in particular relates to a bauxite flotation tailings sedimentation separation device and method. Background Art

[0002] Bauxite is a general term for ores that can be used in industry and are mainly composed of gibbsite, boehmite or diaspore. In the processing of bauxite, it is necessary to use a separation device to settle and separate the flotation tailings, so that the solid and liquid in the bauxite flotation tailings are separated, which is convenient for the subsequent recycling and reuse of bauxite.

[0003] However, the existing sedimentation separation device still has the following technical problems when separating bauxite flotation tailings:

[0004] 1. Before the tailings are settled and separated, it is impossible to initially separate the larger particles in the tailings. Since the large particles have a large inertia, they are prone to generate large impact force and turbulence during the subsequent transportation process, which in turn affects the settlement and separation effect of the tailings;

[0005] 2. When the tailings are settled and separated, it can only be achieved by standing still for a long time, and the efficiency of the settlement and separation is low;

[0006] 3. When the tailings are settled and separated, the tailings need to be transported to a separation box and left to stand. This process can easily generate a large impact force when the tailings fall, affecting the settling efficiency. Summary of the invention

[0007] The purpose of the present invention is to provide a bauxite flotation tailings sedimentation separation device and method that can perform preliminary separation on bauxite flotation tailings and prevent subsequent larger particles from generating turbulence under the action of inertia, in response to the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A bauxite flotation tailings sedimentation and separation device, comprising:

[0010] A separation box, wherein a motor is fixedly installed on the top of the separation box, the output end of the motor extends into the separation box and is fixedly installed with a driving gear, a filter frame is rotatably installed inside the separation box, a plurality of filter holes are opened on the peripheral side wall of the filter frame, a gear ring is sleeved on the outer wall of the filter frame, the gear ring is meshed with the driving gear, and a partition plate is fixedly installed inside the separation box;

[0011] A centrifugal sedimentation mechanism, which is arranged inside the separation box and is used to accelerate the sedimentation speed of the tailings;

[0012] A cleaning mechanism, which is arranged above the separation box and is used to clean the filter frame to ensure the filtering effect of the filter frame on larger particles;

[0013] The buffer mechanism is arranged inside the separation box and is used to reduce the impact force generated when the tailings fall.

[0014] Preferably, the centrifugal sedimentation mechanism includes a centrifugal cylinder rotatably installed below the partition plate, an annular through groove is provided on the partition plate, a transmission sleeve is fixedly installed below the filter frame, a hexagonal slot is provided inside the transmission sleeve, a hexagonal block is slidably installed in the hexagonal slot, a transmission rod is fixedly installed below the hexagonal block, and the portion of the transmission rod extending below the partition plate is fixedly connected to the centrifugal cylinder.

[0015] Preferably, the cleaning mechanism includes a fixing ring fixedly mounted above the filter frame, the fixing ring extends above the separation box, two rotating blocks are slidably mounted on the peripheral side wall of the fixing ring, two screws are rotatably mounted above the separation box, the two rotating blocks are respectively threadedly connected to the two screws, a placement plate is slidably mounted inside the filter frame, the placement plate is elastically connected to the inner bottom wall of the filter frame through two first springs, a control groove is provided on the placement plate, a first magnet is fixedly mounted on the inner bottom wall of the filter frame, sliding grooves are provided on the inner walls on both sides of the control groove, a wedge plate is slidably mounted in each of the sliding grooves, and each of the wedge plates is elastically connected to the inner bottom wall of the filter frame through a second spring. Connected to the inner wall of the slide groove, a support plate is fixedly installed on the top of the separation box, and two sliders are slidably installed on the support plate through a first connecting rod, and a first rack is fixedly installed on each of the sliders, and a first gear is fixedly installed on the top of each of the screw rods, and the two first gears are respectively meshed with the two first racks, and a lifting plate is slidably installed on the support plate through a second connecting rod, and two first hinge seats are fixedly installed on the lifting plate, and second hinge seats are fixedly installed on the two sliders, and connecting rods are hinged between the two first hinge seats and the two second hinge seats, and a second magnet is fixedly installed on the bottom of the lifting plate, and the first magnet and the second magnet repel each other with the same poles.

[0016] Preferably, the buffer mechanism includes a floating block slidably mounted on the inner wall of the separation box, a second rack is fixedly mounted on the floating block, a rotating rod is hinged on the inner wall of the separation box through a third hinge seat, a second gear is fixedly mounted on the rotating rod, the second gear and the second rack are meshed with each other, and guide plates are fixedly mounted on both ends of the rotating rod through connecting blocks.

[0017] Preferably, the annular through groove fits with the inner wall of the centrifugal cylinder.

[0018] Preferably, a limit flat key is fixedly mounted on the side wall of the filter frame, and a key slot matching with the limit flat key is provided on the inner wall of the gear ring.

[0019] Preferably, an arc-shaped limiting plate is fixedly installed above the separation box, and the rotating block is slidably installed on the side wall of the arc-shaped limiting plate.

[0020] A separation method applied to the bauxite flotation tailings sedimentation separation device, characterized in that it comprises the following steps:

[0021] S1. Preliminary separation treatment: The raw materials are transported to the filter frame, and the driving gear is driven by the motor to rotate, and the filter frame is further driven to rotate under the action of the gear ring, so that the larger particles in the bauxite flotation tailings remain inside the filter frame, and the smaller particles and slurry are thrown out of the filter frame under the action of centrifugal force and fall on the partition plate, so as to perform preliminary separation of the bauxite flotation tailings;

[0022] S2, sedimentation treatment: while the filter frame rotates, the centrifugal drum will be driven to rotate through the transmission sleeve and the transmission rod. Since the tailings on the partition plate will pass through the annular groove and enter the centrifugal drum along the tangent direction of the inner wall of the centrifugal drum, the particles in the tailings will rotate along the drum wall. Under the action of centrifugal force, the movement of the particles toward the drum wall is accelerated, and under the action of gravity, the particles are accelerated to settle downward in a spiral, thereby realizing the sedimentation treatment of the tailings;

[0023] S3. Buffering treatment: In the process of tailings falling from the filter frame onto the partition plate, the tailings first fall on the guide plate and then slide from the guide plate to the partition plate. When the depth of the tailings on the partition plate is small, it is far away from the filter frame. At this time, the floating block is at the bottom. The second rack and the second gear are used to make the guide plate tilt at a larger angle, so that the guide plate is closer to the top of the liquid surface of the tailings, so that the impact force of the tailings when falling is smaller, avoiding a large impact force when the tailings fall, and preventing the sedimentation efficiency from being affected.

[0024] Compared with the existing technology, the advantages of the bauxite flotation tailings sedimentation separation device and method are:

[0025] 1. The present invention provides a filter frame. Before the tailings are settled and separated, the driving gear can be driven to rotate by a motor, and the filter frame is further driven to rotate under the action of the gear ring, so that larger particles in the bauxite flotation tailings remain in the filter frame, and smaller particles and slurry are thrown out of the filter frame under the action of centrifugal force, so that the bauxite flotation tailings are initially separated, and turbulence is prevented from being generated by subsequent larger particles under the action of inertia, thereby improving the subsequent sedimentation and separation effect of the tailings.

[0026] 2. The present invention sets a centrifugal sedimentation mechanism. During the rotation of the filter frame, the centrifugal cylinder is driven to rotate through the transmission sleeve and the transmission rod. Since the tailings on the partition plate pass through the annular groove and enter the centrifugal cylinder along the tangential direction of the inner wall of the centrifugal cylinder, the particles in the tailings rotate along the cylinder wall. The centrifugal force accelerates the movement of the particles toward the cylinder wall, and under the action of gravity, the particles are accelerated to settle downward in a spiral, thereby achieving the sedimentation treatment of the tailings and greatly accelerating the efficiency of sedimentation separation.

[0027] 3. The present invention sets a cleaning mechanism. When there are many large particles in the filter frame, the filter holes are easily blocked, thereby affecting the subsequent separation of tailings. At this time, the placement plate can be driven to move down in the filter frame by gravity, so that the first magnet moves upward to above the two wedge-shaped plates. Through the magnetic repulsion between the first magnet and the second magnet, the lifting plate overcomes its own gravity and moves upward, driving the two first racks away from each other. Under the action of the first gear, the screw is driven to rotate, and the fixed ring and the filter frame are driven to move up to the top of the separation box through the rotating block, which is convenient for the staff to fish out the large particles in the filter frame, ensuring that the large particles in the filter frame will not block the filter holes, thereby ensuring the separation of tailings.

[0028] 4. The present invention provides a buffer mechanism. When the tailings fall from the filter frame onto the partition plate, the tailings first fall on the guide plate and then slide from the guide plate to the partition plate. When the depth of the tailings on the partition plate is small, it is far away from the filter frame. At this time, the floating block is at the bottom. The guide plate is tilted at a larger angle through the second rack and the second gear, so that the guide plate is closer to the top of the liquid surface of the tailings, thereby reducing the impact force of the tailings when they fall, avoiding a large impact force when the tailings fall, and preventing the sedimentation efficiency from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the bauxite flotation tailings sedimentation and separation device provided by the present invention;

[0030] Figure 2 is a cross-sectional view of the bauxite flotation tailings sedimentation separation device provided by the present invention;

[0031] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0032] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0033] Figure 5 yes Figure 2 Enlarged view of point C in the middle;

[0034] Figure 6 yes Figure 2 The enlarged view of point D in the middle;

[0035] Figure 7 It is a cross-sectional view of the filter frame in the bauxite flotation tailings sedimentation separation device provided by the present invention;

[0036] Figure 8 yes Figure 7 Enlarged view of point E in the middle;

[0037] Fig. 9 The present invention provides a flow chart of the bauxite flotation tailings sedimentation separation device and method.

[0038] In the figure, 1, separation box; 11, motor; 12, driving gear; 13, filter frame; 14, filter hole; 15, gear ring; 16, partition plate; 2, centrifugal sedimentation mechanism; 21, centrifugal cylinder; 22, annular groove; 23, transmission sleeve; 24, hexagonal slot; 25, hexagonal block; 26, transmission rod; 3, cleaning mechanism; 31, fixed ring; 32, rotating block; 33, screw; 34, placement plate; 35, first spring; 36, control groove; 37, first magnet; 38, slide Groove; 39, wedge plate; 310, second spring; 311, support plate; 312, slider; 313, first rack; 314, first gear; 315, lifting plate; 316, first hinge seat; 317, second hinge seat; 318, connecting rod; 319, second magnet; 4, buffer mechanism; 41, floating block; 42, second rack; 43, third hinge seat; 44, rotating rod; 45, second gear; 46, guide plate; 5, limit flat key; 51, keyway; 6, arc limit plate. DETAILED DESCRIPTION

[0039] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0040] like Figure 1-Figure 9 As shown, a bauxite flotation tailings sedimentation and separation device comprises:

[0041] A separation box 1, a motor 11 is fixedly installed above the separation box 1, the output end of the motor 11 extends into the separation box 1 and is fixedly installed with a driving gear 12, a filter frame 13 is rotatably installed inside the separation box 1, a plurality of filter holes 14 are opened on the peripheral side wall of the filter frame 13, a gear ring 15 is sleeved on the outer wall of the filter frame 13, the gear ring 15 and the driving gear 12 are meshed with each other, and a partition plate 16 is fixedly installed inside the separation box 1;

[0042] In view of the problem that the prior art cannot perform preliminary separation on the larger particles in the tailings, and that the larger particles have a large inertia and are therefore prone to generate a large impact force and turbulence during their subsequent transportation, thereby affecting the sedimentation and separation effect of the tailings, the present invention sets a filter frame 13. Before the tailings are sedimented and separated, the drive gear 12 can be driven to rotate by the motor 11, and the filter frame 13 is further driven to rotate under the action of the gear ring 15, so that the larger particles in the bauxite flotation tailings remain in the filter frame 13, and the smaller particles and slurry are thrown out of the filter frame 13 under the action of centrifugal force and fall on the partition plate 16, so that the bauxite flotation tailings are initially separated, and the subsequent larger particles are prevented from generating turbulence under the action of inertia, thereby improving the subsequent sedimentation and separation effect of the tailings.

[0043] A centrifugal sedimentation mechanism 2 is arranged inside the separation box 1 and is used to accelerate the sedimentation speed of the tailings;

[0044] A cleaning mechanism 3 is disposed above the separation box 1 and is used to clean the filter frame 13 to ensure the filtering effect of the filter frame 13 on larger particles;

[0045] The buffer mechanism 4 is arranged inside the separation box 1 and is used to reduce the impact force generated when the tailings fall.

[0046] The centrifugal sedimentation mechanism 2 includes a centrifugal cylinder 21 rotatably mounted below the partition plate 16, an annular through groove 22 is provided on the partition plate 16, a transmission sleeve 23 is fixedly installed below the filter frame 13, a hexagonal slot 24 is provided inside the transmission sleeve 23, a hexagonal block 25 is slidably installed in the hexagonal slot 24, a transmission rod 26 is fixedly installed below the hexagonal block 25, and the transmission rod 26 extends to the part below the partition plate 16 and is fixedly connected to the centrifugal cylinder 21.

[0047] The annular through groove 22 fits with the inner wall of the centrifugal cylinder 21 , so that the tailings on the partition plate 16 can enter the centrifugal cylinder 21 along the tangent direction of the inner wall of the centrifugal cylinder 21 .

[0048] The arrangement of the hexagonal block 25 and the hexagonal slot 24 ensures that the filter frame 13 can always drive the centrifugal cylinder 21 to rotate while moving upward, thereby ensuring that the operation of the centrifugal sedimentation mechanism 2 will not be affected by the subsequent cleaning mechanism 3 and avoiding motion interference.

[0049] In view of the problem that in the prior art, the sedimentation and separation of tailings can only be achieved by standing still for a long time, and the efficiency of the sedimentation and separation is low, the present invention sets a centrifugal sedimentation mechanism 2. During the rotation of the filter frame 13, the centrifugal barrel 21 is driven to rotate through the transmission sleeve 23 and the transmission rod 26. Since the tailings on the partition plate 16 will pass through the annular groove 22 and enter the centrifugal barrel 21 along the tangential direction of the inner wall of the centrifugal barrel 21, the particles in the tailings will rotate along the barrel wall, and the movement of the particles toward the barrel wall will be accelerated under the action of centrifugal force. Under the action of gravity, the particles are accelerated to settle downward in a spiral, thereby achieving the sedimentation treatment of the tailings and greatly accelerating the efficiency of sedimentation and separation.

[0050] The cleaning mechanism 3 includes a fixed ring 31 fixedly installed above the filter frame 13, the fixed ring 31 extends to the top of the separation box 1, two rotating blocks 32 are slidably installed on the peripheral side wall of the fixed ring 31, two screws 33 are rotatably installed above the separation box 1, and the two rotating blocks 32 are respectively threadedly connected to the two screws 33, a placement plate 34 is slidably installed inside the filter frame 13, the placement plate 34 is elastically connected to the inner bottom wall of the filter frame 13 through two first springs 35, a control groove 36 is opened on the placement plate 34, a first magnet 37 is fixedly installed on the inner bottom wall of the filter frame 13, and slide grooves 38 are provided on the inner walls of both sides of the control groove 36, each slide groove 38 is slidably installed with a wedge plate 39, and each wedge plate 39 is elastically connected to the inner wall of the slide groove 38 through a second spring 310, and the separation mechanism 3 includes a plurality of rotating blocks 32, each of which is connected to the inner wall of the slide groove 38 through a plurality of rotating blocks 32. A support plate 311 is fixedly installed on the top of the box 1, and two sliders 312 are slidably installed on the support plate 311 through a first connecting rod, and a first rack 313 is fixedly installed on each slider 312, and a first gear 314 is fixedly installed on the top of each screw rod 33, and the two first gears 314 are respectively meshed with the two first racks 313. A lifting plate 315 is slidably installed on the support plate 311 through a second connecting rod, and two first hinge seats 316 are fixedly installed on the lifting plate 315. Second hinge seats 317 are fixedly installed on the two sliders 312, and connecting rods 318 are hinged between the two first hinge seats 316 and the two second hinge seats 317. A second magnet 319 is fixedly installed on the bottom of the lifting plate 315, and the first magnet 37 and the second magnet 319 repel each other with the same poles.

[0051] Among them, a limit flat key 5 is fixedly installed on the side wall of the filter frame 13, and a key slot 51 matching the limit flat key 5 is opened on the inner wall of the toothed ring 15. Through the setting of the limit flat key 5 and the key slot 51, when the toothed ring 15 drives the filter frame 13 to rotate, the filter frame 13 can be vertically displaced along the toothed ring 15 and moved to the top of the separation box 1, thereby ensuring the operation of the cleaning mechanism 3.

[0052] Among them, an arc-shaped limit plate 6 is fixedly installed above the separation box 1, and the rotating block 32 is slidably installed on the side wall of the arc-shaped limit plate 6. The rotating block 32 can be limited by the arc-shaped limit plate 6 to ensure that the rotation of the screw 33 can only drive the rotating block 32 to move vertically, thereby avoiding the rotating block 32 rotating with the screw 33 to cause motion interference.

[0053] In order to prevent the large particles in the filter frame 13 from clogging the filter holes 14 and affecting the separation of the tailings, the present invention sets a cleaning mechanism 3. When there are many large particles in the filter frame 13, the filter holes 14 are easily blocked, thereby affecting the subsequent separation of the tailings. At this time, the placement plate 34 can be driven by gravity to move down in the filter frame 13 and contact the inner bottom wall of the filter frame 13. At this time, the first magnet 37 on the inner bottom wall of the filter frame 13 moves in the slide groove 38, so that the two wedge plates 39 are separated from each other and no longer The first magnet 37 is blocked, and the magnetic repulsion between the first magnet 37 and the second magnet 319 is used to make the lifting plate 315 overcome its own gravity and move upward. Further, under the action of the first hinge seat 316, the second hinge seat 317 and the connecting rod 318, the two first racks 313 are moved away from each other. Under the action of the first gear 314, the screw rod 33 is driven to rotate, and the fixing ring 31 and the filter frame 13 are driven to move above the separation box 1 through the rotating block 32, so that the staff can remove the large particles in the filter frame 13.

[0054] The buffer mechanism 4 includes a floating block 41 slidably mounted on the inner wall of the separation box 1, a second rack 42 is fixedly mounted on the floating block 41, a rotating rod 44 is hinged on the inner wall of the separation box 1 through a third hinge seat 43, a second gear 45 is fixedly mounted on the rotating rod 44, the second gear 45 is meshed with the second rack 42, and guide plates 46 are fixedly mounted on both ends of the rotating rod 44 through connecting blocks.

[0055] In view of the problem in the prior art that tailings generate a large impact force when falling, thereby affecting the sedimentation efficiency, the present invention sets a buffer mechanism 4. In the process of tailings falling from the filter frame 13 onto the partition plate 16, the tailings first fall on the guide plate 46, and then slide from the guide plate 46 to the partition plate 16. When the depth of the tailings on the partition plate 16 is small, it is far away from the filter frame 13. At this time, the floating block 41 is at the bottom, and the guide plate 46 is tilted at a large angle through the second rack 42 and the second gear 45, so that the guide plate 46 is closer to the top of the liquid surface of the tailings, so that the impact force of the tailings when falling is smaller, avoiding a large impact force when the tailings fall, and preventing the sedimentation efficiency from being affected.

[0056] A separation method applied to a bauxite flotation tailings settling separation device comprises the following steps:

[0057] S1. Preliminary separation treatment: the raw material is transported into the filter frame 13, the motor 11 drives the driving gear 12 to rotate, and the filter frame 13 is further driven to rotate under the action of the gear ring 15, so that the larger particles in the bauxite flotation tailings remain in the filter frame 13, and the smaller particles and slurry are thrown out of the filter frame 13 under the action of centrifugal force and fall on the partition plate 16, so as to perform preliminary separation on the bauxite flotation tailings;

[0058] S2, sedimentation treatment: while the filter frame 13 rotates, the centrifugal cylinder 21 will be driven to rotate through the transmission sleeve 23 and the transmission rod 26. Since the tailings on the partition plate 16 will pass through the annular groove 22 and enter the centrifugal cylinder 21 along the tangential direction of the inner wall of the centrifugal cylinder 21, the particles in the tailings will rotate along the cylinder wall, and the movement of the particles toward the cylinder wall will be accelerated under the action of centrifugal force. Under the action of gravity, the particles will be accelerated to settle downward in a spiral, thereby realizing the sedimentation treatment of the tailings;

[0059] S3, buffering treatment: in the process of tailings falling from the filter frame 13 onto the partition plate 16, the tailings first fall onto the guide plate 46, and then slide from the guide plate 46 to the partition plate 16. When the depth of the tailings on the partition plate 16 is small, it is far away from the filter frame 13. At this time, the floating block 41 is at the bottom, and the guide plate 46 is tilted at a large angle through the second rack 42 and the second gear 45, so that the guide plate 46 is closer to the top of the liquid surface of the tailings, so that the impact force of the tailings when falling is small, avoiding a large impact force when the tailings fall, and preventing the sedimentation efficiency from being affected.

[0060] The present invention can be explained by the following operation mode:

[0061] Before the tailings are settled and separated, the driving gear 12 is driven to rotate by the motor 11, and the filter frame 13 is further driven to rotate under the action of the gear ring 15, so that the larger particles in the bauxite flotation tailings remain in the filter frame 13, and the smaller particles and slurry are thrown out of the filter frame 13 under the action of centrifugal force and fall on the partition plate 16, so that the bauxite flotation tailings are initially separated to prevent the subsequent larger particles from generating turbulence under the action of inertia;

[0062] During the rotation of the filter frame 13, the centrifugal cylinder 21 will be driven to rotate through the transmission sleeve 23 and the transmission rod 26. Since the tailings on the partition plate 16 will pass through the annular groove 22 and enter the centrifugal cylinder 21 along the tangential direction of the inner wall of the centrifugal cylinder 21, the particles in the tailings will rotate along the cylinder wall, and the movement of the particles toward the cylinder wall will be accelerated under the action of centrifugal force, and the particles will be accelerated to settle downward in a spiral under the action of gravity.

[0063] When the tailings fall from the filter frame 13 onto the partition plate 16, the tailings first fall onto the guide plate 46, and then slide from the guide plate 46 onto the partition plate 16. When the depth of the tailings on the partition plate 16 is small, it is far away from the filter frame 13. At this time, the floating block 41 is at the bottom. The guide plate 46 is tilted at a large angle through the second rack 42 and the second gear 45, so that the guide plate 46 is closer to the top of the liquid surface of the tailings, so that the impact force of the tailings when falling is small.

[0064] When there are many large particles in the filter frame 13, the placement plate 34 is driven by gravity to move down in the filter frame 13 and contact the inner bottom wall of the filter frame 13. At this time, the first magnet 37 on the inner bottom wall of the filter frame 13 moves in the slide groove 38, so that the two wedge plates 39 move away from each other and no longer block the first magnet 37. Through the magnetic repulsion between the first magnet 37 and the second magnet 319, the lifting plate 315 overcomes its own gravity and moves upward. Further, under the action of the first hinge seat 316, the second hinge seat 317 and the connecting rod 318, the two first racks 313 move away from each other. Under the action of the first gear 314, the screw rod 33 is driven to rotate, and the fixing ring 31 and the filter frame 13 are driven by the rotating block 32 to move above the separation box 1, so that the staff can fish out the large particles in the filter frame 13.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bauxite flotation tailings sedimentation and separation device, characterized in that: include: A separation box (1), wherein a motor (11) is fixedly mounted above the separation box (1), an output end of the motor (11) extends into the separation box (1) and is fixedly mounted with a driving gear (12), a filter frame (13) is rotatably mounted inside the separation box (1), a plurality of filter holes (14) are provided on a peripheral side wall of the filter frame (13), a gear ring (15) is sleeved on an outer wall of the filter frame (13), the gear ring (15) and the driving gear (12) are meshed with each other, and a partition plate (16) is fixedly mounted inside the separation box (1); A centrifugal sedimentation mechanism (2), the centrifugal sedimentation mechanism (2) being arranged inside the separation box (1) and used to accelerate the sedimentation speed of the tailings; A cleaning mechanism (3), the cleaning mechanism (3) being arranged above the separation box (1) and being used for cleaning the filter frame (13) to ensure the filtering effect of the filter frame (13) on larger particles; A buffer mechanism (4) is arranged inside the separation box (1) and is used to reduce the impact force generated when the tailings fall.

2. The bauxite flotation tailings sedimentation and separation device according to claim 1, characterized in that: The centrifugal sedimentation mechanism (2) comprises a centrifugal cylinder (21) rotatably mounted below a partition plate (16), the partition plate (16) being provided with an annular through groove (22), a transmission sleeve (23) being fixedly mounted below the filter frame (13), a hexagonal clamping groove (24) being provided inside the transmission sleeve (23), a hexagonal clamping block (25) being slidably mounted inside the hexagonal clamping groove (24), a transmission rod (26) being fixedly mounted below the hexagonal clamping block (25), and a portion of the transmission rod (26) extending below the partition plate (16) being fixedly connected to the centrifugal cylinder (21).

3. The bauxite flotation tailings sedimentation and separation device according to claim 2, characterized in that: The cleaning mechanism (3) comprises a fixing ring (31) fixedly mounted above the filter frame (13), the fixing ring (31) extending to above the separation box (1), two rotating blocks (32) slidably mounted on the peripheral side wall of the fixing ring (31), two screw rods (33) rotatably mounted above the separation box (1), the two rotating blocks (32) being respectively threadedly connected to the two screw rods (33), a placement plate (34) slidably mounted inside the filter frame (13), the placement plate (34) is elastically connected to the inner bottom wall of the filter frame (13) through two first springs (35), a control groove (36) is opened on the placement plate (34), a first magnet (37) is fixedly installed on the inner bottom wall of the filter frame (13), and sliding grooves (38) are provided on the inner walls on both sides of the control groove (36), and a wedge plate (39) is slidably installed in each of the sliding grooves (38), and each of the wedge plates (39) is elastically connected to the sliding groove (38) through a second spring (310). The inner wall of the separation box (1) is fixedly installed with a support plate (311) above, and two sliders (312) are slidably installed on the support plate (311) through a first connecting rod, and a first rack (313) is fixedly installed on each slider (312), and a first gear (314) is fixedly installed on the top of each screw rod (33), and the two first gears (314) are respectively meshed with the two first racks (313). A lifting plate (315) is installed on the rod slidingly, two first hinge seats (316) are fixedly installed on the lifting plate (315), and second hinge seats (317) are fixedly installed on the two sliders (312). Connecting rods (318) are hinged between the two first hinge seats (316) and the two second hinge seats (317). A second magnet (319) is fixedly installed on the bottom of the lifting plate (315), and the first magnet (37) and the second magnet (319) have the same poles and repel each other.

4. The bauxite flotation tailings sedimentation and separation device according to claim 3, characterized in that: The buffer mechanism (4) comprises a floating block (41) slidably mounted on the inner wall of the separation box (1), a second rack (42) being fixedly mounted on the floating block (41), a rotating rod (44) being hingedly mounted on the inner wall of the separation box (1) via a third hinge seat (43), a second gear (45) being fixedly mounted on the rotating rod (44), the second gear (45) and the second rack (42) being meshed with each other, and guide plates (46) being fixedly mounted on both ends of the rotating rod (44) via connecting blocks.

5. The bauxite flotation tailings sedimentation and separation device according to claim 4, characterized in that: The annular through groove (22) is in contact with the inner wall of the centrifugal cylinder (21).

6. The bauxite flotation tailings settling and separation device according to claim 5, characterized in that: A limit flat key (5) is fixedly mounted on the side wall of the filter frame (13), and a key slot (51) matching with the limit flat key (5) is provided on the inner wall of the gear ring (15).

7. The bauxite flotation tailings settling and separation device according to claim 6, characterized in that: An arc-shaped limiting plate (6) is fixedly installed above the separation box (1), and the rotating block (32) is slidably installed on the side wall of the arc-shaped limiting plate (6).

8. A separation method applied to the bauxite flotation tailings settling separation device as claimed in claim 7, characterized in that: The following steps are involved: S1, preliminary separation treatment: the raw material is transported into the filter frame (13), and the driving gear (12) is driven to rotate by the motor (11), and the filter frame (13) is further driven to rotate under the action of the gear ring (15), so that the larger particles in the bauxite flotation tailings are retained in the filter frame (13), and the smaller particles and slurry are thrown out of the filter frame (13) under the action of centrifugal force and fall on the partition plate (16), so that the bauxite flotation tailings are initially separated; S2, sedimentation treatment: while the filter frame (13) rotates, the centrifugal cylinder (21) is driven to rotate through the transmission sleeve (23) and the transmission rod (26). Since the tailings on the partition plate (16) pass through the annular groove (22) and enter the centrifugal cylinder (21) along the tangential direction of the inner wall of the centrifugal cylinder (21), the particles in the tailings are caused to rotate along the cylinder wall. The movement of the particles toward the cylinder wall is accelerated under the action of centrifugal force. Under the action of gravity, the particles are accelerated to settle downward in a spiral, thereby achieving sedimentation treatment for the tailings; S3, buffering treatment: When the tailings fall from the filter frame (13) onto the partition plate (16), the tailings first fall onto the guide plate (46), and then slide from the guide plate (46) onto the partition plate (16). When the depth of the tailings on the partition plate (16) is small, it is far away from the filter frame (13). At this time, the floating block (41) is at the bottom, and the guide plate (46) is tilted at a large angle through the second rack (42) and the second gear (45), so that the guide plate (46) is closer to the top of the liquid surface of the tailings, so that the impact force of the tailings when falling is small, avoiding a large impact force when the tailings fall, and preventing the sedimentation efficiency from being affected.

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