Tailing agitation leaching device and process

Abstract

The invention discloses a tailing agitation leaching device and process, and belongs to the technical field of tailing leaching. The tailing stirring and leaching device comprises a leaching tank, a rotating shaft is rotationally connected in the leaching tank, the side wall of the rotating shaft is rotationally connected with a stirring rod through a hinge seat, the tailing stirring and leaching device further comprises a smashing assembly, a stirring assembly and a stirring assembly, and the smashing assembly is arranged in the leaching tank and used for smashing tailings in the leaching tank; through rotation of a stirring rod and semispherical blocks, a mixed solution of tailings and a leaching solution is stirred, the tailings and the leaching solution are uniformly mixed, the leaching effect is effectively improved, the three sets of semispherical blocks intermittently collide in the rotating process through the attraction effect of a first magnetic plate and a second magnetic plate, and the leaching effect is effectively improved. And the two extrusion plates are arranged in the leaching liquid, so that tailings which suspend in the leaching liquid and are located between the two extrusion plates are crushed, the leaching liquid can make full contact with tailings particles, then dissolution of metal in the tailings is promoted, and the leaching effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tailings leaching, and in particular to a tailings stirring leaching device and process. Background Art

[0002] Tailings leaching is a key technology in the field of mineral resource recovery and environmental governance. It is mainly used to recover valuable metals and other resources from tailings generated during mining and beneficiation. Tailings usually contain trace amounts of incompletely extracted metals. After the tailings are mixed with the leachate, a chemical reaction is caused to convert the metals into ions and dissolve them into the leachate. Finally, the metals are extracted from the solution by electrolysis, extraction, etc., so as to achieve the recycling of metals in the tailings, reduce resource waste and reduce pressure on the environment. In the process of tailings leaching, stirring is usually used to accelerate the dissolution of useful components to improve leaching efficiency.

[0003] At present, conventional stirring methods can only make the surface of tailings particles contact with the leaching solution. However, since some particles in the tailings have a large particle size and contain more metals, the tailings leaching effect is average. In addition, the existing leaching device only relies on the leaching solution to dissolve the metal when in use, and the leaching efficiency is low. Therefore, a tailings stirring leaching device and process are proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the tailings leaching effect in the prior art is general and the efficiency is low, and to propose a tailings stirring leaching device and process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A tailings stirring and leaching device comprises a leaching tank, in which a rotating shaft is rotatably connected, and a side wall of the rotating shaft is rotatably connected to a stirring rod via a hinged seat, and further comprises: a crushing assembly, which is arranged in the leaching tank and is used to crush the tailings in the leaching tank; and an oxygenation assembly, which is arranged in the leaching tank and is used to continuously inflate the mixed liquid in the leaching tank.

[0006] In order to improve the leaching effect, preferably, the stirring rod is arranged in three groups at equal intervals along the center of the rotating shaft, the crushing assembly includes a hemispherical block, the hemispherical block is fixed at the bottom end of the stirring rod, the three groups of hemispherical blocks are fitted together, and the fitting surfaces of the three groups of hemispherical blocks are fixedly connected with an extrusion plate, the inner wall of the leaching tank is fixedly connected with a first magnetic plate through a connecting rod, the side wall of the hemispherical block is fixedly connected with a second magnetic plate, the second magnetic plate and the first magnetic plate are magnetically attracted to each other, and the top of the leaching tank is fixedly connected with a drive motor, and the output shaft of the drive motor is fixedly connected to the end of the rotating shaft.

[0007] Furthermore, a stirring blade is rotatably connected to the bottom of the hemispherical block, and a plurality of groups of drag-reducing grooves are provided on the side wall of the stirring blade.

[0008] In order to improve the leaching efficiency, preferably, the oxygenation component includes a piston groove, which is opened inside the hemispherical block, and the piston groove coincides with the axis of the extrusion plate, a third magnetic plate is slidably connected in the piston groove, and the third magnetic plate and the extrusion plate on the hemispherical block on its corresponding side are magnetically repelled, a sealing plate is fixedly connected in the piston groove, a first spring is fixedly connected between the third magnetic plate and the sealing plate, the cavity formed by the third magnetic plate and the sealing plate is connected to the inner cavity of the leaching tank through an exhaust groove, and a one-way valve is arranged in the exhaust groove.

[0009] Furthermore, an upper air guide groove is provided in the rotating shaft, the top of the upper air guide groove is connected to the inner cavity of the leaching tank, a lower air guide groove is provided in the stirring rod, the upper air guide groove and the lower air guide groove are connected through an air guide hose, an air replenishing groove is provided in the hemispherical block, the lower air guide groove is connected to the air replenishing groove, the air replenishing groove is connected to the cavity where the first spring is located through an inflation groove, and a one-way valve is provided in the inflation groove.

[0010] In order to improve the mixing effect, preferably, the side wall of the third magnetic plate is fixedly connected with a push plate, and the first spring is wrapped around the outside of the push plate, and the other end of the push plate passes through the sealing plate and is slidably connected thereto, the rotating shaft of the stirring blade passes upward into the piston groove and is rotatably connected thereto, a driven gear is fixedly connected to the rotating shaft of the stirring blade, and a driving tooth is fixedly connected to the side wall of the push plate, the driving tooth is meshingly connected to the driven gear, and the repulsive force generated between the two groups of the third magnetic plates is greater than the sum of the thrust required for the rebound of the first spring and the meshing rotation of the driven gear.

[0011] In order to prevent blocking, preferably, a filter screen is fixedly connected to the bottom of the inner cavity of the leaching tank, a spring telescopic rod is fixedly connected to the inner wall of the leaching tank, the telescopic end of the spring telescopic rod is attached to the bottom of the filter screen, a force storage groove is opened on the side wall of the first magnetic plate, a fourth magnetic plate is slidably connected in the force storage groove, and the fourth magnetic plate and the second magnetic plate are magnetically attracted to each other, a second spring is fixedly connected between the fourth magnetic plate and the force storage groove, an air guide ring is fixedly connected to the outer wall of the leaching tank, the force storage groove is connected to the inner cavity of the air guide ring, and the air guide ring is connected to the bottom of the piston cavity of the spring telescopic rod through an air guide pipe.

[0012] Furthermore, the suction force generated between the first magnetic plate, the fourth magnetic plate and the second magnetic plate is greater than the gravity of the hemispherical block.

[0013] In order to facilitate the loading and unloading of materials, preferably, the top two sides of the leaching tank are respectively fixed with an inlet pipe and a feed pipe and are connected, the bottom end of the leaching tank is fixed with a drain pipe and is connected, and a solenoid valve is arranged in the drain pipe, the side wall of the leaching tank is provided with a discharge port, and the bottom end of the discharge port is flush with the top of the filter screen, and a discharge plate is detachably connected to the discharge port.

[0014] A tailings stirring leaching process, the steps are as follows: Step 1: Pour the tailings and the leaching solution into the leaching tank and stir and mix; Step 2: crushing the tailings in stirring; Step 3: During the stirring and mixing, air is continuously introduced into the mixed liquid; Step 4: After the leaching is completed, the liquid and solid-liquid are discharged separately.

[0015] Compared with the prior art, the present invention provides a tailings stirring leaching device and process, which has the following beneficial effects: 1. The tailings stirring leaching device stirs the mixture of tailings and leachate through the rotation of the stirring rod and the hemispherical blocks, so that the two are evenly mixed, which effectively improves the leaching effect. By utilizing the attraction between the first magnetic plate and the second magnetic plate, the three groups of hemispherical blocks collide intermittently during the rotation process, so as to crush the tailings suspended in the leachate and located between the two extrusion plates, so that the leachate can fully contact the tailings particles, thereby promoting the dissolution of metals in the tailings and improving the leaching effect.

[0016] 2. The tailings stirring and leaching device will continuously fill the mixed liquid with air through the repulsive effect between the third magnetic plate and the squeezing plate on the corresponding side hemispherical block, so as to increase the oxygen content in the mixed liquid, promote the oxidation of metal minerals, and transform the metal from a solid state to an ionic state soluble in the leaching agent, thereby increasing the metal dissolution rate, reducing the consumption of the leaching solution and accelerating the leaching efficiency; and the third magnetic plate will also push the push plate to move, and cooperate with the meshing relationship between the driving teeth and the driven gear, so that the stirring blades produce a circular stirring effect at the bottom of the hemispherical block, thereby improving the mixing effect between the tailings and the leaching solution and ensuring the leaching efficiency.

[0017] 3. The tailings stirring and leaching device, through the attraction between the fourth magnetic plate and the second magnetic plate, will cause the spring telescopic rod to have an upward impact on the bottom of the filter screen during the rotation of the hemispherical block, so that the tailings particles falling on the filter screen are bounced upward, effectively avoiding tailings accumulation, improving the leaching effect, preventing the filter screen from being blocked, and ensuring the smoothness of subsequent drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the overall structure of a tailings stirring and leaching device proposed by the present invention; Figure 2 A schematic diagram of the internal structure of a leaching tank of a tailings stirring leaching device proposed by the present invention; Figure 3 This is a schematic diagram of the overall half-section structure of a tailings stirring leaching device proposed by the present invention; Figure 4 A tailings stirring leaching device proposed by the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area; Figure 5 A tailings stirring leaching device proposed by the present invention Figure 3 Schematic diagram of the enlarged structure of the middle B area; Figure 6 This is a schematic diagram of the transverse cross-sectional structure of a hemispherical block of a tailings stirring and leaching device proposed by the present invention; Figure 7 A schematic diagram of the internal structure of a piston tank of a tailings stirring and leaching device proposed by the present invention; Figure 8 The present invention provides a schematic diagram of the vertical cross-sectional structure of a hemispherical block of a tailings stirring and leaching device.

[0019] In the figure: 1, leaching tank; 2, rotating shaft; 21, hinged seat; 22, stirring rod; 23, driving motor; 3, hemispherical block; 31, extrusion plate; 32, first magnetic plate; 33, second magnetic plate; 4, stirring blade; 41, drag reduction groove; 5, piston groove; 51, third magnetic plate; 52, sealing plate; 53, first spring; 54, exhaust groove; 6, upper air guide groove; 61, lower air guide groove; 62, air guide hose; 63, air replenishment groove; 64, charging groove; 7, push plate; 71, driven gear; 72, driving teeth; 8, filter screen; 81, spring telescopic rod; 82, power storage groove; 821, fourth magnetic plate; 822, second spring; 83, air guide ring; 84, air guide pipe; 9, liquid inlet pipe; 91, feed pipe; 92, discharge pipe; 93, unloading plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Embodiment 1: Reference Figure 1-Figure 8 A tailings stirring and leaching device comprises a leaching tank 1, in which a rotating shaft 2 is rotatably connected, and a side wall of the rotating shaft 2 is rotatably connected to a stirring rod 22 through a hinge seat 21, and two sides of the top of the leaching tank 1 are respectively fixed and connected with an inlet pipe 9 and a feed pipe 91, and the bottom end of the leaching tank 1 is fixed and connected with a discharge pipe 92, and a solenoid valve is arranged in the discharge pipe 92, and a discharge port is arranged on the side wall of the leaching tank 1, and the bottom end of the discharge port is flush with the top of the filter screen 8, and a discharge plate 93 is detachably connected in the discharge port, wherein the detachable method here is bolt fixing, and also comprises: a crushing assembly, which is arranged in the leaching tank 1 and is used to crush the tailings in the leaching tank 1; an oxygenation assembly, which is arranged in the leaching tank 1 and is used to continuously inflate the mixed liquid in the leaching tank 1.

[0023] Reference Figure 2 , Figure 3 , wherein three groups of stirring rods 22 are arranged at equal intervals along the center of the rotating shaft 2, the crushing assembly includes a hemispherical block 3, the hemispherical block 3 is fixed to the bottom end of the stirring rod 22, the three groups of hemispherical blocks 3 are fitted together, and the fitting surfaces of the three groups of hemispherical blocks 3 are fixedly connected with an extrusion plate 31, the inner wall of the leaching tank 1 is fixedly connected with a first magnetic plate 32 through a connecting rod, the side wall of the hemispherical block 3 is fixedly connected with a second magnetic plate 33, the second magnetic plate 33 and the first magnetic plate 32 are magnetically attracted to each other, the top of the leaching tank 1 is fixedly connected with a driving motor 23, the output shaft of the driving motor 23 is fixedly connected to the end of the rotating shaft 2, and the centrifugal force generated by the hemispherical block 3 when rotating is less than its own gravity.

[0024] By setting the above structure, the driving motor 23 is turned on to drive the rotating shaft 2 to rotate, thereby driving the stirring rod 22 and the hemispherical block 3 to rotate, so as to stir the mixture of tailings and leachate, so that the two are evenly mixed, and the leaching effect is effectively improved. Moreover, when the hemispherical block 3 rotates, the attraction between the first magnetic plate 32 and the second magnetic plate 33 will cause the hemispherical block 3 to rotate along the hinge seat 21 toward the side close to the first magnetic plate 32. When the first magnetic plate 32 and the second magnetic plate 33 are separated from the attraction area, under the action of the gravity of the hemispherical block 3, the three groups of hemispherical blocks 3 will be reset and collided at the same time, so as to crush the tailings suspended in the leachate and located between the two extrusion plates 31, so that the tailings are transformed into smaller particles, thereby effectively increasing the surface area of ​​the tailings, so that the leachate can fully contact the tailings particles, thereby promoting the dissolution of metals in the tailings, and improving the leaching effect.

[0025] Reference Figure 3 , Figure 5-Figure 8 The oxygenation assembly includes a piston groove 5, which is provided inside the hemispherical block 3, and the piston groove 5 coincides with the axis of the extrusion plate 31. A third magnetic plate 51 is slidably connected in the piston groove 5, and the third magnetic plate 51 and the extrusion plate 31 on the corresponding side of the hemispherical block 3 are magnetically repelled from each other. A sealing plate 52 is fixedly connected in the piston groove 5, and a first spring 53 is fixedly connected between the third magnetic plate 51 and the sealing plate 52. The cavity formed by the third magnetic plate 51 and the sealing plate 52 is connected to the leaching tank 1 through the exhaust groove 54. The inner cavity is connected, and a one-way valve is arranged in the exhaust groove 54; an upper air guide groove 6 is provided in the rotating shaft 2, and the top of the upper air guide groove 6 is connected to the inner cavity of the leaching tank 1, and a lower air guide groove 61 is provided in the stirring rod 22, and the upper air guide groove 6 is connected to the lower air guide groove 61 through an air guide hose 62, and an air replenishing groove 63 is provided in the hemispherical block 3, and the lower air guide groove 61 is connected to the air replenishing groove 63, and the air replenishing groove 63 is connected to the cavity where the first spring 53 is located through the charging groove 64, and a one-way valve is arranged in the charging groove 64; It should be noted that the one-way valve in the exhaust groove 54 can only allow the air in the piston groove 5 to be filled into the leaching tank 1; the one-way valve in the charging groove 64 can only allow the air at the top of the inner cavity of the leaching tank 1 to enter the piston groove 5.

[0026] By setting the above structure, when the two extrusion plates 31 are in a fitted state, the third magnetic plate 51 will repel the extrusion plate 31 on the corresponding hemispherical block 3, so that the third magnetic plate 51 retracts into the piston groove 5, thereby compressing the gas in the piston groove 5 and opening the one-way valve in the exhaust groove 54, so that the gas is filled into the mixed liquid. When the extrusion plate 31 is separated from the fitting area, under the rebound action of the first spring 53, the third magnetic plate 51 will be reset and generate suction in the piston groove 5, thereby opening the one-way valve in the charging groove 64, so that the air at the top of the leaching tank 1 is replenished into the piston groove 5 along the upper air guide groove 6, the air guide hose 62, the lower air guide groove 61, the air replenishing groove 63 and the charging groove 64. As above, air will be continuously filled into the mixed liquid, thereby increasing the oxygen content in the mixed liquid, promoting the oxidation of metal minerals, and converting the metal from a solid state to an ionic state soluble in the leaching agent, thereby increasing the metal dissolution rate, reducing the consumption of the leaching solution, and accelerating the leaching efficiency.

[0027] Reference Figure 3 , Figure 6-Figure 8 , wherein, the bottom of the hemispherical block 3 is rotatably connected with a stirring blade 4, and a plurality of groups of drag reducing grooves 41 are provided on the side wall of the stirring blade 4; a push plate 7 is fixedly connected to the side wall of the third magnetic plate 51, and a first spring 53 is wrapped around the outside of the push plate 7, and the other end of the push plate 7 passes through the sealing plate 52 and is slidably connected thereto, the rotating shaft of the stirring blade 4 passes upward into the piston groove 5 and is rotatably connected thereto, a driven gear 71 is fixedly connected to the rotating shaft of the stirring blade 4, a driving tooth 72 is fixedly connected to the side wall of the push plate 7, the driving tooth 72 is meshingly connected with the driven gear 71, and the repulsive force generated between the two groups of third magnetic plates 51 is greater than the sum of the thrusts required for the rebound of the first spring 53 and the meshing rotation of the driven gear 71.

[0028] Through the arrangement of the above structure, during the retraction of the third magnetic plate 51, the push plate 7 will be pushed to move, and the meshing relationship between the driving teeth 72 and the driven gear 71 will cause the stirring blade 4 to rotate, thereby generating a circular stirring effect at the bottom of the hemispherical block 3, further improving the mixing effect between the tailings and the leachate, and ensuring the leaching efficiency.

[0029] Reference Figure 2-Figure 4, wherein a filter screen 8 is fixedly connected to the bottom of the inner cavity of the leaching tank 1, a spring telescopic rod 81 is fixedly connected to the inner wall of the leaching tank 1, the telescopic end of the spring telescopic rod 81 is attached to the bottom of the filter screen 8, a force storage groove 82 is opened on the side wall of the first magnetic plate 32, a fourth magnetic plate 821 is slidably connected in the force storage groove 82, and the fourth magnetic plate 821 and the second magnetic plate 33 are magnetically attracted to each other, a second spring 822 is fixedly connected between the fourth magnetic plate 821 and the force storage groove 82, an air guide ring 83 is fixedly connected to the outer wall of the leaching tank 1, the force storage groove 82 is connected to the inner cavity of the air guide ring 83, and the air guide ring 83 is connected to the bottom of the piston cavity of the spring telescopic rod 81 through an air guide pipe 84; the suction force generated between the first magnetic plate 32, the fourth magnetic plate 821 and the second magnetic plate 33 is greater than the gravity of the hemispherical block 3.

[0030] By setting the above structure, by utilizing the attraction between the fourth magnetic plate 821 and the second magnetic plate 33, when the two are in the magnetic contact area, the fourth magnetic plate 821 is moved closer to the second magnetic plate 33, so that the cavity area in the power storage groove 82 is increased. According to the piston principle, suction will be generated in the power storage groove 82 at this time, and this suction will cause the gas at the bottom of the piston cavity of the spring telescopic rod 81 to be drawn into the power storage groove 82. Since the air pressure at the bottom of the piston cavity of the spring telescopic rod 81 is reduced, the telescopic end of the spring telescopic rod 81 will retract and disengage from the power storage groove 82. The bottom of the filter screen 8 is in a state of being in contact with each other. Then, when the fourth magnetic plate 821 and the second magnetic plate 33 are separated from the attraction area, the gas originally drawn into the energy storage groove 82 will be quickly pressed back to the spring telescopic rod 81 under the rebound action of the second spring 822, thereby pushing the telescopic end of the spring telescopic rod 81 to extend and produce an upward impact on the bottom of the filter screen 8, so that the tailings particles that fall on the filter screen 8 are bounced upward, effectively avoiding tailings accumulation, improving the leaching effect, and preventing the filter screen 8 from being blocked, ensuring the smoothness of subsequent drainage.

[0031] Reference Figure 1-Figure 8In the present invention, when in use, tailings and leachate prepared in proportion are poured into the leaching tank 1 from the feed pipe 91 and the liquid inlet pipe 9 respectively, and then the drive motor 23 is turned on to drive the rotating shaft 2 to rotate, thereby driving the stirring rod 22 and the hemispherical block 3 to rotate, so as to stir the mixture of tailings and leachate, so that the two are evenly mixed, which effectively improves the leaching effect, and when the hemispherical block 3 rotates, the first magnetic plate 32 and the second magnetic plate 33 are attracted to each other, which will make the hemispherical block 3 rotates along the hinge seat 21 toward the side close to the first magnetic plate 32. When the first magnetic plate 32 and the second magnetic plate 33 are separated from the mutually attracted area, under the gravity of the hemispherical blocks 3, the three groups of hemispherical blocks 3 will be reset and collided at the same time, thereby crushing the tailings suspended in the leachate and located between the two squeeze plates 31, so that the tailings are transformed into smaller particles, thereby effectively increasing the surface area of ​​the tailings, allowing the leachate to fully contact with the tailings particles, thereby promoting the dissolution of metals in the tailings and improving the leaching efficiency. The fourth magnetic plate 821 and the second magnetic plate 33 will also attract each other at this time, so that the fourth magnetic plate 821 is close to the second magnetic plate 33, so that the cavity area in the power storage groove 82 is increased. According to the piston principle, suction will be generated in the power storage groove 82 at this time, and this suction will cause the gas at the bottom of the piston cavity of the spring telescopic rod 81 to be drawn into the power storage groove 82. Since the air pressure at the bottom of the piston cavity of the spring telescopic rod 81 is reduced, the telescopic end of the spring telescopic rod 81 will retract at this time and be separated from the bottom of the filter screen 8. When the fourth magnetic plate 821 and the second magnetic plate 33 are separated from the attractive area, the gas originally drawn into the energy storage groove 82 will be quickly pressed back to the spring telescopic rod 81 under the rebound action of the second spring 822, thereby pushing the telescopic end of the spring telescopic rod 81 to extend and produce an upward impact on the bottom of the filter screen 8, so that the tailings particles falling on the filter screen 8 are bounced upward, effectively avoiding tailings accumulation, improving the leaching effect, and preventing the filter screen 8 from being blocked, ensuring the smoothness of subsequent drainage.

[0032] When the two extrusion plates 31 are in a fitted state, the third magnetic plate 51 will repel the extrusion plate 31 on the corresponding hemispherical block 3, so that the third magnetic plate 51 will retract into the piston groove 5, thereby compressing the gas in the piston groove 5 and opening the one-way valve in the exhaust groove 54, so that the gas is filled into the mixed liquid. When the extrusion plate 31 is separated from the fitted area, under the rebound effect of the first spring 53, the third magnetic plate 51 will be reset and generate suction in the piston groove 5, so as to open the one-way valve in the charging groove 64, so that the air at the top of the leaching tank 1 will flow along the upper air guide groove 6, the air guide hose 62, the lower air guide groove 61, and the air replenishing groove 63. The gas filling groove 64 is added to the piston groove 5, and the above reciprocating movement will continuously fill the mixed liquid with air, thereby increasing the oxygen content in the mixed liquid, promoting the oxidation of metal minerals, and converting the metal from a solid state to an ionic state soluble in the leaching agent, thereby increasing the metal dissolution rate, reducing the consumption of the leaching solution, and accelerating the leaching efficiency; and in the process of the third magnetic plate 51 retracting, the push plate 7 will be pushed to move, and the meshing relationship between the driving teeth 72 and the driven gear 71 will be used to rotate the stirring blade 4, thereby generating a circular stirring effect at the bottom of the hemispherical block 3, further improving the mixing effect between the tailings and the leaching solution, and ensuring the leaching efficiency. Finally, when the leaching is complete, the liquid part is discharged by the drain pipe 92, and then the discharge plate 93 is opened to discharge the solid part, thereby completing the entire tailings leaching process.

[0033] Embodiment 2: Reference Figure 1-Figure 8 , which is basically the same as Example 1, on the basis of Example 1, a tailings stirring leaching process is proposed, and the steps are as follows: Step 1, pour the tailings and the leachate into the leaching tank 1 for stirring and mixing: the tailings and the leachate prepared in proportion are poured into the leaching tank 1 from the feed pipe 91 and the liquid inlet pipe 9 respectively, and then the drive motor 23 is turned on to drive the rotating shaft 2 to rotate, thereby driving the stirring rod 22 and the hemispherical block 3 to rotate, thereby stirring the mixture of the tailings and the leachate to make the two evenly mixed.

[0034] Step 2, crushing the tailings being stirred: when the hemispherical block 3 rotates, the attraction between the first magnetic plate 32 and the second magnetic plate 33 will cause the hemispherical block 3 to rotate along the hinge seat 21 toward the side close to the first magnetic plate 32. When the first magnetic plate 32 and the second magnetic plate 33 are out of the attraction area, under the action of the gravity of the hemispherical block 3, the three groups of hemispherical blocks 3 will be reset and collided at the same time, thereby crushing the tailings suspended in the leachate and located between the two extrusion plates 31, so that the tailings are transformed into smaller particles, thereby effectively increasing the surface area of ​​the tailings, so that the leachate can fully contact the tailings particles.

[0035] Step 3, during the stirring and mixing, air is continuously filled into the mixed liquid: when the two extrusion plates 31 are in a fitted state, a repulsive effect will occur between the third magnetic plates 51 in the two adjacent hemispherical blocks 3, so that the third magnetic plate 51 retracts into the piston groove 5, thereby compressing the gas in the piston groove 5 and opening the one-way valve in the exhaust groove 54, so that the gas is filled into the mixed liquid, and when the extrusion plate 31 is separated from the fitted area, under the rebound action of the first spring 53, the third magnetic plate 51 will be reset, and a suction effect will be generated in the piston groove 5, thereby opening the one-way valve in the charging groove 64, so that the air at the top of the leaching tank 1 is supplemented into the piston groove 5 along the upper air guide groove 6, the air guide hose 62, the lower air guide groove 61, the air replenishing groove 63 and the charging groove 64, and the above reciprocating will continuously fill the mixed liquid with air, thereby increasing the oxygen content in the mixed liquid, promoting the oxidation of metal minerals, and converting the metal from a solid state to an ionic state soluble in the leaching agent, thereby increasing the metal dissolution rate.

[0036] Step 4: After the leaching is completed, the liquid and solid-liquid are discharged separately. When the leaching is complete, the one-way valve in the drain pipe 92 is opened first to allow the liquid part to be discharged from the drain pipe 92. After the liquid is completely discharged, the discharge plate 93 is opened to discharge the solid part, thereby completing the entire tailings leaching process.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tailings stirring leaching device, comprising a leaching tank (1), characterized in that: The leaching tank (1) is rotatably connected to a rotating shaft (2), and a side wall of the rotating shaft (2) is rotatably connected to a stirring rod (22) via a hinge seat (21), and further comprises: A crushing assembly, the crushing assembly being arranged in the leaching tank (1) and being used for crushing the tailings in the leaching tank (1); An oxygenation component is arranged in the leaching tank (1) and is used to continuously inflate the mixed liquid in the leaching tank (1).

2. A tailings stirring leaching device according to claim 1, characterized in that: The stirring rod (22) is arranged in three groups at equal intervals along the center of the rotating shaft (2); the crushing assembly comprises a hemispherical block (3); the hemispherical block (3) is fixed to the bottom end of the stirring rod (22); the three groups of hemispherical blocks (3) are mutually fitted, and the fitting surfaces of the three groups of hemispherical blocks (3) are all fixedly connected to an extrusion plate (31); the inner wall of the leaching tank (1) is fixedly connected to a first magnetic plate (32) via a connecting rod; the side wall of the hemispherical block (3) is fixedly connected to a second magnetic plate (33); the second magnetic plate (33) and the first magnetic plate (32) are magnetically attracted to each other; the top of the leaching tank (1) is fixedly connected to a driving motor (23); the output shaft of the driving motor (23) is fixedly connected to the end of the rotating shaft (2).

3. A tailings stirring leaching device according to claim 2, characterized in that: The bottom of the hemispherical block (3) is rotatably connected to a stirring blade (4), and a plurality of groups of drag-reducing grooves (41) are provided on the side wall of the stirring blade (4).

4. A tailings stirring leaching device according to claim 3, characterized in that: The oxygenation assembly comprises a piston groove (5), wherein the piston groove (5) is provided inside the hemispherical block (3), and the axis of the piston groove (5) coincides with the axis of the extrusion plate (31); a third magnetic plate (51) is slidably connected inside the piston groove (5), and the third magnetic plate (51) and the extrusion plate (31) on the hemispherical block (3) on the corresponding side thereof are magnetically repelled from each other; a sealing plate (52) is fixedly connected inside the piston groove (5), and a first spring (53) is fixedly connected between the third magnetic plate (51) and the sealing plate (52); a cavity formed by the third magnetic plate (51) and the sealing plate (52) is communicated with the inner cavity of the leaching tank (1) via an exhaust groove (54), and a one-way valve is arranged inside the exhaust groove (54).

5. A tailings stirring leaching device according to claim 4, characterized in that: An upper air guide groove (6) is provided in the rotating shaft (2), the top end of the upper air guide groove (6) is communicated with the inner cavity of the leaching tank (1), a lower air guide groove (61) is provided in the stirring rod (22), the upper air guide groove (6) and the lower air guide groove (61) are communicated with each other via an air guide hose (62), an air replenishing groove (63) is provided in the hemispherical block (3), the lower air guide groove (61) is communicated with the air replenishing groove (63), the air replenishing groove (63) is communicated with the cavity where the first spring (53) is located via an air charging groove (64), and a one-way valve is provided in the air charging groove (64).

6. A tailings stirring leaching device according to claim 4, characterized in that: The side wall of the third magnetic plate (51) is fixedly connected to a push plate (7), and the first spring (53) is wrapped around the outside of the push plate (7), while the other end of the push plate (7) passes through the sealing plate (52) and is slidably connected thereto, the rotating shaft of the stirring blade (4) passes upward into the piston groove (5) and is rotatably connected thereto, the rotating shaft of the stirring blade (4) is fixedly connected to a driven gear (71), the side wall of the push plate (7) is fixedly connected to a driving tooth (72), the driving tooth (72) is meshingly connected to the driven gear (71), and the repulsive force generated between the two groups of the third magnetic plates (51) is greater than the sum of the thrusts required for the rebound of the first spring (53) and the meshing rotation of the driven gear (71).

7. A tailings stirring leaching device according to claim 2, characterized in that: A filter screen (8) is fixedly connected to the bottom of the inner cavity of the leaching tank (1); a spring telescopic rod (81) is fixedly connected to the inner wall of the leaching tank (1); the telescopic end of the spring telescopic rod (81) is attached to the bottom of the filter screen (8); a force storage groove (82) is provided on the side wall of the first magnetic plate (32); a fourth magnetic plate (821) is slidably connected to the force storage groove (82); the fourth magnetic plate (821) and the second magnetic plate (33) are magnetically attracted to each other; a second spring (822) is fixedly connected between the fourth magnetic plate (821) and the force storage groove (82); an air guide ring (83) is fixedly connected to the outer wall of the leaching tank (1); the force storage groove (82) is communicated with the inner cavity of the air guide ring (83); and the air guide ring (83) is communicated with the bottom of the piston cavity of the spring telescopic rod (81) via an air guide pipe (84).

8. A tailings stirring leaching device according to claim 7, characterized in that: The suction force generated between the first magnetic plate (32), the fourth magnetic plate (821) and the second magnetic plate (33) is greater than the gravity of the hemispherical block (3).

9. A tailings stirring leaching device according to claim 7, characterized in that: A liquid inlet pipe (9) and a feed pipe (91) are fixed and connected to the two sides of the top of the leaching tank (1), a liquid discharge pipe (92) is fixed and connected to the bottom of the leaching tank (1), and a solenoid valve is arranged in the liquid discharge pipe (92), a discharge port is arranged on the side wall of the leaching tank (1), and the bottom end of the discharge port is flush with the top of the filter screen (8), and a discharge plate (93) is detachably connected to the discharge port.

10. A tailings stirring leaching process, using a tailings stirring leaching device as claimed in any one of claims 1 to 9, characterized in that: Here are the steps: Step 1: Pour the tailings and the leaching solution into a leaching tank (1) and stir and mix them; Step 2: crushing the tailings in stirring; Step 3: During the stirring and mixing, air is continuously introduced into the mixed liquid; Step 4: After the leaching is completed, the liquid and solid-liquid are discharged separately.

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