Mine tailings slurry thickening equipment

Abstract

The present invention discloses a mine tailings slurry thickening device, which relates to the field of tailings treatment and includes a pool body, an overflow pool is provided on the side of the pool body, a mounting frame is provided on the top of the pool body, a rake mechanism is installed on the bottom of the mounting frame, a central feed barrel is installed on the bottom of the mounting frame, a slurry inlet pipe is connected to the outside of the central feed barrel, a slurry discharge pipe is provided at the bottom of the pool body, a water inlet box is provided on the side of the pool body, the water inlet box is provided in a semicircular ring shape, the top of the water inlet box is through-set, and a drainage trough is provided at the bottom, and multiple groups of pressure relief plates are staggered from top to bottom on both sides of the inner wall of the water inlet box. The mine tailings slurry thickening device can continuously slow down the flow rate of the tailings slurry during transportation through the mutual cooperation between the water inlet box, the drainage trough, the baffle and the drainage pipe, so that the flow rate of the tailings slurry is greatly reduced when it enters the pool body, thereby facilitating the rapid sinking of tailings sand particles in the tailings slurry.

Description

Technical Field

[0001] The present invention relates to tailings treatment technology, in particular to mine tailings slurry concentration equipment. Background Art

[0002] A concentrator is a continuously operating concentrating and clarifying device primarily used to concentrate and clarify tailings slurry during the tailings processing process. Concentrators typically utilize a central feed system. Slurry is fed into the concentrator's central feed cylinder and then into a settling tank. The system utilizes gravity settling to settle solid particles to the bottom of the tank. The settled sand is discharged from the bottom outlet, and clarified water is discharged from the overflow port, achieving solid-liquid separation.

[0003] When a traditional thickener is working, the tailings slurry is fed directly into the center of the pool through the feed pipe. Its distribution method is simple. Since the incoming slurry is directly rushed into the central feed barrel of the thickener, the slurry flow rate is very high, and the particles in the slurry cannot be fully settled. The sedimentation layer at the bottom of the thickening pool will also be damaged due to the impact of the liquid flow. This affects both the overflow water concentration in the upper part of the thickening pool and the sedimentation effect of the tailings particles in the lower part of the thickening pool.

[0004] The utility model patent with authorization announcement number CN217516725U discloses a mine tailings slurry thickening equipment, including a silo, the inner cavity of the silo is provided with a central tube, the inner cavity of the silo is provided with a feeding mechanism, the feeding mechanism includes a circular tube located in the inner cavity of the silo, the upper end of the circular tube is connected to a liquid inlet pipe, the lower end of the liquid inlet pipe is equidistantly provided with a liquid discharge pipe, the inner cavity of the central tube is equidistantly provided with a slurry discharge plate, the inner cavity of the slurry discharge plate is provided with a slurry discharge trough. Compared with the existing technology, the device has a reasonable structural design and strong practicality, which is convenient for effective slow-flow discharge of tailings, avoids clogging of tailings slurry particles and reduces the dehydration and concentration effect due to direct sedimentation due to gravity, thereby effectively improving its sedimentation effect, and increasing the feeding range of the flocculant, facilitating the adjustment of its feeding height, and facilitating increasing the contact reaction effect between the tailings particles and the flocculant, so as to further improve the pulping. However, in actual application, after the tailings slurry enters the central tube, part of the tailings slurry will directly enter the slurry discharge plate at a higher flow rate, and be discharged from the bottom of the slurry discharge plate to the slow flow cover. Under the guidance of the slow flow cover, it will diffuse upward in a diffused shape, thereby blocking the particles settling downward and pushing them upward, affecting the overall sedimentation effect of the thickening tank. Summary of the Invention

[0005] The purpose of the present invention is to provide a mine tailings slurry thickening device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: mine tailings slurry thickening equipment, including a pool body, an overflow pool is provided on the side of the pool body, a mounting frame is provided on the top of the pool body, a rake mechanism is installed on the bottom of the mounting frame, a central feeding barrel is installed on the bottom of the mounting frame, a slurry inlet pipe is connected to the outside of the central feeding barrel, a slurry discharge pipe is provided at the bottom of the pool body, a water inlet box is provided on the side of the pool body, the water inlet box is provided in a semicircular ring shape, the top of the water inlet box is through-set, and a drainage trough is provided at the bottom, multiple groups of pressure relief plates are staggered from top to bottom on both sides of the inner wall of the water inlet box, the non-fixed end of the pressure relief plate is tilted downward, and the horizontal width of the pressure relief plate is greater than half of the width of the top opening of the water inlet box, and a number of drainage pipes are equidistantly provided on the side of the central feeding barrel;

[0007] The tank body is provided with a flocculant liquid supply unit, which is used to transport the flocculant liquid into the tailings slurry.

[0008] Furthermore, the position of the liquid discharge end of the drain pipe corresponds to the water inlet box.

[0009] Furthermore, the top position of the water inlet box is slightly higher than the top position of the liquid inlet side of the overflow tank.

[0010] Furthermore, the flocculant liquid supply unit includes an annular tube installed at the bottom of the mounting frame, a supply pipe is installed on the side of the annular tube, the bottom of the annular tube is annular with several branches equidistantly arranged, and the outer side of the branch is equidistantly provided with several discharge grooves.

[0011] Furthermore, the slurry inlet pipe is arranged tangentially to the side surface of the central feeding cylinder.

[0012] Furthermore, a secondary flow blocking unit is provided at the bottom of the water inlet box, and the secondary flow blocking unit includes a receiving box connected to the side of the pool body, the receiving box is provided with a closing portion on the side close to the inner wall of the pool body, and the receiving box is provided with a slow flow portion on the side away from the inner wall of the pool body, and the top of the slow flow portion is arranged in a retracted shape.

[0013] Furthermore, a plurality of groups of slow flow plates are equidistantly arranged on the surface of the slow flow portion from bottom to top, and the top position of the slow flow plate at the top is lower than the top position of the liquid inlet side of the overflow tank.

[0014] Furthermore, a plurality of discharge grooves are equidistantly formed on the surface of the slow flow portion.

[0015] Furthermore, the receiving box is arranged directly below the water inlet box.

[0016] Compared with the prior art, the mine tailings slurry thickening equipment provided by the present invention has the following beneficial effects:

[0017] 1. The mine tailings slurry thickening equipment can continuously slow down the flow rate of tailings slurry during transportation through the cooperation between the water inlet box, drainage trough, baffle and drainage pipe, so that the flow rate when it enters the pool body is greatly reduced, which is conducive to the rapid sinking of tailings sand particles in the tailings slurry.

[0018] 2. The mine tailings slurry thickening equipment, through the use of a secondary slow flow unit, can provide secondary buffering for the tailings slurry during transportation. Moreover, through the mutual cooperation between the discharge trough, slow flow part and baffle, deep and smooth distribution of the tailings slurry can be achieved, thereby greatly reducing the interference of the tailings slurry transportation process with the clarified water in the upper part of the pool and the sediment below, which is conducive to improving the concentration efficiency of the thickening equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure of the central feeding barrel, the rake mechanism and the water inlet box of the present invention;

[0022] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0023] Figure 4 It is a schematic diagram of the overall longitudinal cross-sectional structure of the present invention;

[0024] Figure 5 for Figure 4 The enlarged structural diagram at B in the middle;

[0025] Figure 6 It is a schematic diagram of the local structure of the receiving box of the present invention.

[0026] Description of reference numerals:

[0027] 1. Tank body; 101. Overflow tank; 102. Mounting frame; 103. Rake mechanism; 104. Central feeding barrel; 105. Slurry inlet pipe; 106. Slurry discharge pipe; 2. Water inlet box; 21. Drain trough; 22. Pressure relief plate; 23. Drain pipe; 3. Ring pipe; 31. Supply pipe; 32. Branch pipe; 33. Discharge trough; 4. Receiving box; 41. Closing part; 42. Slow flow part; 43. Slow flow plate; 44. Discharge trough. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1: Please refer to Figures 1-4 The mine tailings slurry thickening equipment includes a pool body 1, an overflow pool 101 is provided on the side of the pool body 1, a mounting frame 102 is provided on the top of the pool body 1, a rake mechanism 103 is installed at the bottom of the mounting frame 102, a central feeding barrel 104 is installed at the bottom of the mounting frame 102, and a slurry inlet pipe 105 is connected to the outside of the central feeding barrel 104, and a slurry discharge pipe 106 is provided at the bottom of the pool body 1.

[0030] It should be noted that the rake mechanism 103 includes a rotating rod and several rakes arranged on the outside thereof, and the rotating rod is driven by a motor; a clean water outlet is provided at the outer end of the overflow tank 101, which is used to discharge the clean water in the overflow tank 101. The above structures are all existing technologies and will not be repeated here.

[0031] A water inlet box 2 is provided on the side of the pool body 1. The water inlet box 2 is semi-circular in shape. The top of the water inlet box 2 is through-set, and a drainage groove 21 is provided at the bottom. Multiple groups of pressure relief plates 22 are staggered from top to bottom on both sides of the inner wall of the water inlet box 2. The non-fixed ends of the pressure relief plates 22 are tilted downward, and the horizontal width of the pressure relief plates 22 is greater than half the width of the top opening of the water inlet box 2. Several drainage pipes 23 are equidistantly provided on the sides of the central feeding barrel 104.

[0032] It should be noted that the position of the discharge end of the drainage pipe 23 corresponds to the water inlet box 2 , so that the drainage pipe 23 can transport the tailings slurry entering the central feeding barrel 104 to the water inlet box 2 .

[0033] In order to ensure that the tailings slurry entering the water inlet box 2 does not directly overflow into the overflow tank 101, the top position of the water inlet box 2 should be slightly higher than the top position of the liquid inlet side of the overflow tank 101.

[0034] A flocculant liquid supply unit is provided in the pool body 1, which is used to transport flocculant liquid into the tailings slurry. The flocculant liquid supply unit includes an annular pipe 3 installed at the bottom of the mounting frame 102, and a supply pipe 31 is installed on the side of the annular pipe 3. The bottom of the annular pipe 3 is in a circular ring shape and several branch pipes 32 are equidistantly arranged. The outer side surface of the branch pipe 32 is equidistantly provided with several discharge grooves 33.

[0035] It should be added that the slurry inlet pipe 105 is arranged tangentially to the side of the central feeding barrel 104, so that the tailings slurry can rotate along the inner wall of the central feeding barrel 104 after entering the central feeding barrel 104, thereby driving the entire slurry in the central feeding barrel 104 to rotate, which is beneficial to improving the diffusion effect of the flocculant liquid.

[0036] During operation, the mine tailings slurry is transported through the slurry inlet pipe 105 to the central feeding barrel 104. During this process, the supply pipe 31 continuously transports the flocculant into the ring pipe 3 and discharges the flocculant into the central feeding barrel 104 through the discharge groove 33 on the bottom branch pipe 32. The flocculant is mixed with the slurry that is constantly rotating in the central feeding barrel 104, and as the slurry continues to rotate, the flocculant is more fully diffused in the slurry.

[0037] When the slurry position in the central feeding barrel 104 reaches the drain pipe 23, the slurry mixed with flocculant in the central feeding barrel 104 enters through the drain pipe 23 and falls from the top of the water inlet box 2. During the falling process, the slurry is buffered by several pressure relief plates 22, which can slow down its flow rate, so that the impact force when it is discharged from the bottom drainage trough 21 is smaller, and it is not easy to cause serious interference to the upper clean water and the lower tailings.

[0038] Example 2: Please refer to Figure 5-Figure 6 , this embodiment provides a technical solution based on the above embodiment: a secondary flow blocking unit is provided at the bottom of the water inlet box 2, and the secondary flow blocking unit includes a receiving box 4 connected to the side of the pool body 1, and a closing portion 41 is provided on the side of the receiving box 4 close to the inner wall of the pool body 1, and a slow flow portion 42 is provided on the side of the receiving box 4 away from the inner wall of the pool body 1. The top of the slow flow portion 42 is arranged in a retracted shape, and a plurality of groups of slow flow plates 43 are equidistantly provided on the surface of the slow flow portion 42 from bottom to top. The top position of the slow flow plate 43 at the top is lower than the top position of the liquid inlet side of the overflow tank 101, and a plurality of discharge grooves 44 are equidistantly provided on the surface of the slow flow portion 42.

[0039] It should be noted that, by the provision of the closing portion 41, liquid cannot pass through this side of the receiving box 4, so that the slurry entering the interior thereof can only flow from the side of the slow flow portion 42. During the flow process, the impact force of its fall can be buffered by the four inner walls of the receiving box 4, and the slurry swaying inside it can flow upward along the slow flow portion 42 for discharge. Moreover, on this side, the flowing slurry can greatly reduce its flow rate when discharged from the top with the cooperation between the slow flow plates 43 that rise successively, and a number of discharge grooves 44 provided on the surface of the closing portion 41 can also discharge part of the slurry, thereby further reducing the flow rate of the slurry discharged into the pool body 1.

[0040] Furthermore, the receiving box 4 is arranged directly below the water inlet box 2 , so that the slurry discharged from the drainage groove 21 at the bottom of the water inlet box 2 can directly fall on the bottom of the receiving box 4 .

[0041] When the slurry is discharged from the bottom of the water inlet box 2 into the receiving box 4, the falling slurry directly collides with the bottom of the receiving box 4 to unload the force, and the slurry after the collision will spread to the surroundings. When it contacts the two sides of the receiving box 4 and the closed part 41, with the cooperation of the closed surface, the slurry will collide again to unload the force, and when it flows to the side of the slow flow part 42, most of the slurry will flow along the inclined slow flow part 42, and contact with multiple slow flow plates 43 that increase in height in the process of flow, so that the impact force of the slurry in the flow process is gradually reduced. In this process, a small part of the slurry will be discharged from the discharge groove 44 on the surface of the slow flow part 42, thereby greatly reducing the flow rate of the slurry that finally enters the pool body 1, and will not interfere with the upper clean water and the lower tailings.

[0042] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A mine tailings slurry thickening device, comprising a tank body (1), an overflow tank (101) being provided on the side of the tank body (1), a mounting frame (102) being provided on the top of the tank body (1), a rake mechanism (103) being provided on the bottom of the mounting frame (102), a central feeding barrel (104) being provided on the bottom of the mounting frame (102), a slurry inlet pipe (105) being externally connected to the central feeding barrel (104), and a slurry discharge pipe (106) being provided on the bottom of the tank body (1), characterized in that: A water inlet box (2) is provided on the side of the tank body (1), and the water inlet box (2) is provided in a semicircular shape. The top of the water inlet box (2) is provided through, and a drainage groove (21) is provided at the bottom. A plurality of pressure relief plates (22) are staggered from top to bottom on both sides of the inner wall of the water inlet box (2). The non-fixed ends of the pressure relief plates (22) are provided with a downward tilt, and the horizontal width of the pressure relief plates (22) is greater than half of the width of the top opening of the water inlet box (2). A plurality of drainage pipes (23) are provided at equal intervals on the side of the central feeding barrel (104); The tank body (1) is provided with a flocculant liquid supply unit for conveying flocculant liquid into the tailings slurry. The position of the discharge end of the drainage pipe (23) corresponds to the water inlet box (2). The top position of the water inlet box (2) is slightly higher than the top position of the liquid inlet side of the overflow tank (101). The slurry inlet pipe (105) is arranged tangentially to the side of the central feeding barrel (104). The bottom of the water inlet box (2) is provided with a secondary flow blocking unit. The secondary flow blocking unit includes a receiving box (4) connected to the side of the tank body (1). A sealing portion (41) is provided on a side of the receiving box (4) close to the inner wall of the pool body (1), and a slow flow portion (42) is provided on a side of the receiving box (4) away from the inner wall of the pool body (1). The top of the slow flow portion (42) is arranged in a retracted shape. A plurality of slow flow plates (43) are arranged on the surface of the slow flow portion (42) in equidistant order from bottom to top. The top position of the slow flow plate (43) at the top is lower than the top position of the liquid inlet side of the overflow pool (101). A plurality of discharge grooves (44) are opened on the surface of the slow flow portion (42) at equidistant intervals.

2. The mine tailings slurry thickening equipment according to claim 1, characterized in that: The flocculant liquid supply unit comprises an annular tube (3) mounted on the bottom of a mounting frame (102), a supply tube (31) being mounted on the side of the annular tube (3), a plurality of branch tubes (32) being arranged at equal intervals in a circular ring shape on the bottom of the annular tube (3), and a plurality of discharge grooves (33) being arranged at equal intervals on the outer side surfaces of the branch tubes (32).

3. The mine tailings slurry thickening equipment according to claim 2, characterized in that: The receiving box (4) is arranged directly below the water inlet box (2).

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