Lithium leaching and extracting integrated device for low-grade lithium ore heap

Abstract

The invention relates to the technical field of lithium ore extraction, in particular to a low-grade lithium ore heap leaching and lithium extraction integrated device which comprises a workbench, a fixing frame, a heap leaching barrel, a storage barrel, a driving unit and a discharging unit. According to the invention, the following problems in the actual use process in the prior art can be solved: when a leaching solution is added into a material, the leaching solution sinks to the bottom after soaking the material and cannot be in full contact with the material, so that the lithium extraction effect on the material is influenced; lithium ions in the material cannot be completely extracted by immersing the material into a leaching solution, so that the lithium extraction efficiency is influenced; according to the invention, the plurality of storage barrels filled with the lithium ore fragments are controlled to move circumferentially and are sequentially contacted with the leaching liquid at the bottom of the dump leaching barrel, so that the lithium ore fragments are fully contacted and reacted with the leaching liquid, lithium ions are repeatedly released after the lithium ore fragments are dissolved, and the lithium extraction effect can be enhanced; according to the heap leaching device, leaching liquid can be supplemented into the heap leaching barrel while rich liquid is extracted, the rich liquid can be collected in time, and the overall efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium ore extraction, and in particular to an integrated device for heap leaching lithium from low-grade lithium ore. Background Art

[0002] Lithium ore refers to mineral resources containing lithium elements and with mining and utilization value. With the rapid development of industries such as new energy vehicles, the demand for lithium is increasing. However, high-grade lithium ore resources are becoming scarce. The development and utilization of low-grade lithium ore has become an important way to meet market demand. Low-grade lithium ore has a low lithium content and is commonly found in mining tailings and smelting waste. Extracting lithium from low-grade lithium ore can achieve lithium recycling, which is green and environmentally friendly and will not cause waste of resources.

[0003] When traditional lithium ore is extracted, lithium ores of different particle sizes are usually stacked in layers, with larger particle sizes placed at the bottom and smaller particles gradually stacked upwards, which is conducive to the rapid infiltration of the leaching solution and the establishment of a good seepage channel. A special leaching solution is then sprayed on the lithium ore pile. During the downward penetration of the leaching solution, useful components such as lithium in the ore will be leached out. The lithium solution is then collected from the rich solution containing lithium ions to extract the lithium ions.

[0004] However, there are usually some problems with the traditional lithium extraction method. With the development of science and technology, technicians in related fields have also optimized the means of extracting lithium from low-grade lithium ores. In order to make a more accurate comparison, a Chinese patent with publication number CN217202898U discloses a lithium ore leaching residue lithium extraction system. The disclosed leaching unit is used to leach and extract lithium from the pretreated material, and convert the lithium-containing solid into a lithium-containing solution. Specifically, the heat-treated material is added with water or acid for water leaching or acid leaching to extract lithium, and the mixture after lithium extraction is separated into solid and liquid to obtain a separation residue and a lithium-containing leachate, and then the leachate is subjected to impurity removal and replacement to finally form lithium carbonate solid.

[0005] Although the above-mentioned prior art can convert lithium-containing solid into lithium-containing solution, it has the following shortcomings in actual use: 1. Since lithium ore needs to be repeatedly in contact with the leaching solution during the lithium extraction process in order to repeatedly release lithium ions and dissolve the lithium ions in the leaching solution, the lithium ions in the lithium ore can be extracted and the leaching solution can be formed into a rich solution containing lithium ions. However, when the above-mentioned prior art adds leaching solutions such as water or acid to the material, it is easy for the leaching solution to penetrate the material and sink to the bottom, resulting in the leaching solution being unable to fully contact the material. Therefore, the lithium in the material cannot be completely extracted, thereby affecting the lithium extraction effect of the material.

[0006] 2. In addition, when the material needs to be repeatedly extracted with a leaching solution, the lithium ions in the leaching solution will gradually approach a saturated state. Therefore, the lithium ions in the material cannot be completely extracted by immersing the material in a leaching solution such as water or acid for lithium extraction, affecting the lithium extraction efficiency. In addition, the leaching solution cannot be replaced in time, so that the rich solution containing lithium ions cannot continue to extract the lithium ions in the material, further affecting the lithium extraction efficiency.

[0007] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing methods of extracting lithium from lithium ore. Summary of the Invention

[0008] In order to solve the above problems, the present invention provides an integrated device for heap leaching lithium from low-grade lithium ore, comprising a workbench, a fixed frame installed at the upper end of the workbench, a heap leaching barrel for heap leaching lithium ore movably provided on the fixed frame, the heap leaching barrel having an opening on a side away from the fixed frame for conveniently placing fragments and leaching liquid, a baffle being detachably installed at the opening, a plurality of storage barrels for holding lithium ore fragments being provided inside the heap leaching barrel, and a plurality of through holes being opened on the outer wall of the storage barrel for facilitating the entry of leaching liquid and leaching the lithium ore; A driving unit is installed between the workbench, the fixed frame and the heap leaching barrel, which is used to control the rotation of the heap leaching barrel to fully leach the lithium ore in the storage barrel. A discharging unit is provided between the storage barrel and the heap leaching barrel, which is used to quickly discharge the lithium ore fragments in the storage barrel after leaching.

[0009] As a preferred technical solution of the present invention, a receiving tray is installed on the side of the inner wall of the heap leaching barrel close to the opening, and a plurality of through holes corresponding to the positions of the storage buckets are opened on the receiving tray. The end of the storage bucket close to the opening is inserted into the through hole and flush with the receiving tray, and the outer wall of the receiving tray has an annular folded edge.

[0010] As a preferred technical solution of the present invention, a connecting frame is rotatably provided on the upper end of the fixing frame, a support ring is installed on the side of the connecting frame away from the fixing frame, and the support ring is rotatably connected to the end of the heap leaching barrel away from the opening; A locating ring is provided on the rotating sleeve of the outer wall of the heap leaching barrel away from the support ring. A supporting seat is rotatably installed on the upper end of the workbench. Two cylinders are installed on the upper end of the supporting seat. The telescopic ends of the cylinders are hinged to the bottom of the locating ring.

[0011] As a preferred technical solution of the present invention, the drive unit includes a receiving tank, a receiving tank is provided on a side of the heap leaching barrel away from the opening, a support shaft is provided on an end of the storage bucket away from the opening, a plurality of support shafts near the outside of the heap leaching barrel are connected by a belt drive, an outer wall of any support shaft near the outside of the heap leaching barrel is sleeved with a linkage gear located in the receiving tank, and an outer wall of a support shaft in the middle of the heap leaching barrel is sleeved with an auxiliary gear located in the receiving tank; A positioning shaft is rotatably provided at one end of the heap leaching barrel away from the opening. One end of the positioning shaft extends into the accommodating groove and is sleeved with a control gear. The control gear is meshed with the linkage gear and the auxiliary gear.

[0012] As a preferred technical solution of the present invention, the end of the positioning shaft away from the control gear extends to the outside of the heap leaching barrel and is sleeved with a moving gear, and the side of the connecting frame close to the heap leaching barrel is equipped with an internal gear ring cylinder that meshes with the moving gear; A control motor is installed on the connecting frame through a motor seat. An output shaft sleeve of the control motor is provided with a driving gear. An outer gear ring meshing with the driving gear is installed at one end of the heap leaching barrel away from the opening.

[0013] As a preferred technical solution of the present invention, a plurality of annularly distributed dividing teeth are installed inside the storage bucket, which are used to change the stacking order of the lithium ore fragments inside the storage bucket as the storage bucket rotates.

[0014] As a preferred technical solution of the present invention, a stabilizing frame is installed on the inner wall of the storage bucket away from the opening of the heap leaching bucket, and a receiving plate is provided on the side of the stabilizing frame away from the opening of the heap leaching bucket through a support, and the support shaft is installed on the side of the receiving plate away from the support.

[0015] As a preferred technical solution of the present invention, the discharge unit includes a mesh cover cylinder slidably mounted on the outside of the storage barrel, the outer wall of the heap leaching barrel is provided with a plurality of discharge holes corresponding to the positions of a plurality of storage barrels near the outside of the heap leaching barrel, and the outer wall of the heap leaching barrel is rotatably mounted with an annular collecting bucket covered outside the plurality of discharge holes.

[0016] As a preferred technical solution of the present invention, a plurality of sliding grooves connected to the discharge hole are opened inside the side wall of the heap leaching barrel, a sealing plate for opening and closing the discharge hole is slidably arranged in the sliding groove, and displacement blocks are installed on the inner and outer walls of the sealing plate, and the outer walls of the displacement blocks on the outer walls of the plurality of sealing plates are commonly installed with an adjusting ring; The outer walls of the multiple mesh cover cylinders close to the outside of the heap leaching barrel are all sleeved with connecting rings, and the outer walls of the connecting rings are connected to the displacement blocks on the inner wall of the sealing plate.

[0017] As a preferred technical solution of the present invention, a storage box is installed at the upper end of the workbench, a water pump is installed on the side of the connecting frame away from the heap leaching barrel, the water outlet end of the water pump extends into the storage box, and a connecting hole is opened at one end of any two opposite support shafts away from the opening of the heap leaching barrel. The water inlet end of the water pump extends into the receiving tank and is then installed with a bifurcated pipe. The bifurcated pipe has two suction ends, and the two suction ends respectively pass through the two connecting holes and extend into the interior of the mesh cover cylinder.

[0018] In summary, this application has the following beneficial technical effects: 1. The present invention controls the rotation of the heap leaching barrel, which drives multiple storage barrels to move synchronously in a circumferential direction. The movement of the storage barrels can disrupt the stacking order of the lithium ore fragments inside the storage barrels, thereby increasing the contact area between the lithium ore fragments and the leaching liquid. The leaching liquid at the bottom of the heap leaching barrel can sequentially contact the lithium ore fragments in the multiple storage barrels, which can replace the traditional heap leaching method, allowing the lithium ore fragments to fully contact and react with the leaching liquid, thereby enhancing the lithium extraction effect of low-grade lithium ore.

[0019] 2. The present invention controls the heap leaching barrel to tilt upward so that the lithium ore fragments can be quickly put into the storage barrel when the lithium ore fragments are added. Controls the heap leaching barrel to tilt downward to a horizontal state so that the leaching liquid inside the heap leaching barrel can dissolve the lithium ore fragments in the storage barrel. When the horizontal heap leaching barrel rotates, the leaching liquid can sequentially immerse the lithium ore fragments in multiple storage barrels, so that the lithium ore fragments are dissolved and lithium ions are repeatedly released, thereby improving the leaching efficiency of the lithium ore fragments.

[0020] 3. The present invention can drive the storage bucket to move circumferentially through the heap leaching bucket while causing the storage bucket to rotate. The circumferential movement of the storage bucket can drive the lithium ore fragments to contact the leaching liquid at the bottom of the heap leaching bucket in sequence for leaching, and the rotation of the storage bucket can disrupt the stacking order of the lithium ore fragments therein, so that the leaching liquid can fully contact the lithium ore fragments, thereby enhancing the heap leaching effect.

[0021] Fourth, the present invention controls the heap leaching barrel to tilt upward, and then drives the displacement block and multiple sealing plates to move as a whole to the side close to the opening of the heap leaching barrel through the adjustment ring to open the discharge port. The displacement block drives multiple mesh cover cylinders to move synchronously through the connecting ring and open the annular gap between the storage barrel and the receiving plate, so that the lithium ore fragments in the storage barrel are quickly discharged after passing through the annular gap and the discharge hole in sequence. The operation is convenient, and opening the annular gaps of multiple storage barrels at the same time can increase the discharge speed of the lithium ore fragments.

[0022] 5. The present invention replenishes the leaching liquid into the heap leaching barrel so that the leaching liquid gradually flows from one side of the opening of the heap leaching barrel to the other side. During the flow, the lithium ore fragments are leached to produce rich liquid, which is then extracted by a water pump. In this way, the rich liquid leaching the lithium ore fragments can be collected in time, and the leaching liquid can be replenished in time to ensure continuous leaching of the lithium ore fragments, which is beneficial to improving the overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the internal structure of the heap leaching barrel of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure between the heap leaching barrel and the driving unit of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the drive unit of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure between the storage bucket and the separation teeth of the present invention.

[0029] Figure 6 It is a schematic diagram of the structure between the heap leaching barrel, the storage barrel and the discharge unit of the present invention.

[0030] Figure 7 This invention Figure 6 A partial enlarged view of point A.

[0031] Figure 8 It is a working state diagram of the discharging unit of the present invention.

[0032] Figure 9 It is a schematic diagram of the structure between the storage box, water pump and bifurcated pipe of the present invention.

[0033] Figure 10 This invention Figure 9 A partial enlarged view of point B.

[0034] In the figure, 1. workbench; 2. fixing frame; 21. connecting frame; 22. support ring; 3. heap leaching barrel; 31. receiving tray; 32. positioning ring; 33. supporting seat; 34. cylinder; 4. baffle; 5. storage barrel; 51. separating teeth; 52. stabilizing frame; 53. pillar; 54. receiving plate; 6. driving unit; 61. supporting shaft; 62. linkage gear; 63. auxiliary gear; 64. positioning shaft; 65. control gear; 66. motion gear; 67. inner gear ring cylinder; 68. control motor; 69. driving gear; 60. outer gear ring; 7. discharging unit; 71. mesh cover cylinder; 72. annular collecting bucket; 73. sliding trough; 74. sealing plate; 75. displacement block; 76. adjusting ring; 77. connecting ring; 8. storage box; 81. water pump; 82. bifurcated pipe. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-10 The embodiments of the present invention are described in detail.

[0036] The embodiment of the present application discloses an integrated device for heap leaching lithium from low-grade lithium ore. It should be noted that the integrated device for heap leaching lithium from low-grade lithium ore of the present application is mainly used in the process of heap leaching lithium from lithium ore. In terms of technical effect, lithium ore fragments can be placed in multiple storage barrels 5, and then the multiple storage barrels 5 are driven by the heap leaching barrel 3 to move synchronously in a circumferential direction. The storage barrels 5 rotate while moving in a circumferential direction, which can disrupt the stacking order of the lithium ore fragments therein, thereby increasing the contact area between the lithium ore fragments and the leaching solution, and can replace the traditional heap leaching method, so that the lithium ore fragments are fully in contact with the leaching solution. tactile reaction, thereby enhancing the lithium extraction effect of low-grade lithium ore; especially when leaching lithium ore fragments, the heap leaching barrel 3 can be controlled to tilt downward to a horizontal state and then rotated to facilitate the leaching liquid inside the heap leaching barrel 3 to leach the lithium ore fragments in multiple storage barrels 5 in turn; further, the low-grade lithium ore heap leaching and lithium extraction integrated device of the present application can also replenish the leaching liquid into the heap leaching barrel 3 while extracting the rich liquid containing lithium ions in the heap leaching barrel 3, so as to collect the rich liquid for leaching lithium ore fragments in time, and can replenish the leaching liquid in time, to ensure continuous leaching of lithium ore fragments, which is beneficial to improving the overall efficiency.

[0037] Reference Figure 1 As shown, an integrated device for heap leaching lithium from low-grade lithium ore includes a workbench 1, a fixed frame 2 is installed on the upper end of the workbench 1, and a heap leaching barrel 3 for heap leaching lithium ore is movably provided on the fixed frame 2, and the heap leaching barrel 3 has an opening on the side away from the fixed frame 2 for conveniently putting in fragments and leaching liquid, and a baffle 4 is detachably installed at the opening, and a plurality of storage barrels 5 for holding lithium ore fragments are provided inside the heap leaching barrel 3, and a plurality of through holes are opened on the outer wall of the storage barrel 5 for facilitating the entry of leaching liquid and leaching of the lithium ore, and the diameter of the through holes is smaller than the diameter of the lithium ore fragments to prevent the lithium ore fragments from being discharged from the through holes; a driving unit 6 is installed between the workbench 1, the fixed frame 2 and the heap leaching barrel 3, for controlling the rotation of the heap leaching barrel 3 to fully leach the lithium ore in the storage barrel 5, and a discharging unit 7 is provided between the storage barrel 5 and the heap leaching barrel 3, for quickly discharging the lithium ore fragments in the storage barrel 5 that have completed leaching.

[0038] During the specific implementation process, low-grade lithium ore fragments are first put into the multiple storage buckets 5 in the heap leaching barrel 3 through the opening, and then the leaching liquid is poured into the heap leaching barrel 3 so that the leaching liquid can immerse the lithium ore fragments in the storage bucket 5 at the bottom of the heap leaching barrel 3 in a horizontal state. Then, the heap leaching barrel 3 is controlled to rotate by the driving unit 6. While the heap leaching barrel 3 rotates, the multiple storage buckets 5 inside it are driven to move synchronously in a circumferential direction. Since the lithium ore fragments will accumulate after being put into the storage bucket 5, the storage bucket 5 can disrupt the stacking order of the lithium ore fragments inside it while moving, thereby increasing the contact area between the lithium ore fragments and the leaching liquid, and the leaching liquid is always located at the bottom of the heap leaching barrel 3, so the leaching liquid can contact the lithium ore fragments in the multiple storage buckets 5 in turn, which can replace the traditional heap leaching method, so that the lithium ore fragments and the leaching liquid are fully in contact and react, thereby enhancing the lithium extraction effect of low-grade lithium ore.

[0039] Reference Figure 2 As shown, in order to be able to quickly put lithium ore fragments into multiple storage buckets 5, so as to improve the feeding speed of lithium ore fragments and the overall heap leaching lithium extraction efficiency, in this embodiment, a receiving tray 31 is installed on the side of the inner wall of the heap leaching bucket 3 near the opening, and a plurality of through holes corresponding to the positions of the storage buckets 5 are opened on the receiving tray 31. The end of the storage bucket 5 near the opening is inserted into the through hole and flush with the receiving tray 31. The outer wall of the receiving tray 31 has an annular folding edge, and the outer edge of the annular folding edge gradually tilts toward the side near the opening, which is used to guide the lithium ore fragments and the leaching solution, so that the lithium ore fragments can smoothly enter the through hole and the storage bucket 5 in turn, thereby improving the feeding speed of the lithium ore fragments and the leaching solution and the overall heap leaching lithium extraction efficiency of the lithium ore.

[0040] Reference Figure 1 and Figure 2 As shown, in order to further improve the feeding speed of lithium ore fragments and the efficiency of heap leaching lithium extraction, in this embodiment, the heap leaching barrel 3 can be tilted upward when the lithium ore fragments are fed, and the heap leaching barrel 3 is kept in a horizontal state during heap leaching of the lithium ore fragments. Specifically, in this embodiment, a connecting frame 21 is rotatably provided on the upper end of the fixed frame 2, and a support ring 22 is installed on the side of the connecting frame 21 away from the fixed frame 2, and the support ring 22 is rotatably connected to the end of the heap leaching barrel 3 away from the opening; a positioning ring 32 is rotatably sleeved on the outer wall of the heap leaching barrel 3 on the side away from the support ring 22, and a supporting seat 33 is rotatably installed on the upper end of the workbench 1, and two cylinders 34 are installed on the upper end of the supporting seat 33, and the telescopic end of the cylinder 34 is hinged to the bottom of the positioning ring 32.

[0041] In the initial state, the telescopic end of the cylinder 34 is in an extended state, and the cylinder 34 can drive the opening side of the heap leaching barrel 3 to tilt upward through the positioning ring 32, so that the lithium ore fragments can quickly enter the storage barrel 5 when the lithium ore fragments are added.

[0042] During the specific implementation process, the cylinder 34 is started, the telescopic end of the cylinder 34 contracts and drives the opening side of the heap leaching barrel 3 to tilt downward through the positioning ring 32, and the heap leaching barrel 3 drives the support ring 22 and the connecting frame 21 to rotate as a whole along the upper end of the fixed frame 2. During the rotation of the heap leaching barrel 3, the supporting seat 33 at the bottom of the cylinder 34 rotates adaptively, so that the cylinder 34 drives the heap leaching barrel 3 to tilt downward to a horizontal state; then the heap leaching barrel 3 is driven to rotate by the driving unit 6, so that the leaching liquid inside the heap leaching barrel 3 can leach the lithium ore fragments in the storage barrel 5, and when the horizontal heap leaching barrel 3 rotates, the leaching liquid can sequentially immerse the lithium ore fragments in multiple storage barrels 5, so that the lithium ore fragments are dissolved and repeatedly release lithium ions, thereby improving the leaching efficiency of the lithium ore fragments.

[0043] Reference Figure 3 and Figure 4 As shown, in order to improve the leaching efficiency of lithium ore fragments, in this embodiment, the leaching liquid in the heap leaching barrel 3 can be brought into contact with the lithium ore fragments in multiple storage barrels 5 in turn, thereby realizing heap leaching of the lithium ore fragments. Based on this, a driving unit 6 is provided in this embodiment. Specifically, the driving unit 6 includes a receiving tank. A receiving tank is provided on the side of the heap leaching barrel 3 away from the opening, and a support shaft 61 is provided at one end of the storage barrel 5 away from the opening. The multiple support shafts 61 near the outside of the heap leaching barrel 3 are connected by belt transmission. The outer wall fixed sleeve of any support shaft 61 near the outside of the heap leaching barrel 3 is provided with a linkage gear 62 located in the receiving tank, and the outer wall fixed sleeve of the support shaft 61 in the middle of the heap leaching barrel 3 is provided with an auxiliary gear 63 located in the receiving tank.

[0044] Furthermore, in this embodiment, a positioning shaft 64 is rotatably provided at the end of the heap leaching barrel 3 away from the opening. After one end of the positioning shaft 64 extends into the accommodating groove, a control gear 65 is fixedly sleeved thereon. The control gear 65 is meshed with the linkage gear 62 and the auxiliary gear 63. After one end of the positioning shaft 64 extends to the outside of the heap leaching barrel 3 away from the control gear 65, a moving gear 66 is fixedly sleeved thereon. An inner gear ring cylinder 67 meshing with the moving gear 66 is fixedly installed on the side of the connecting frame 21 close to the heap leaching barrel 3, and a certain gap is formed between the inner gear ring cylinder 67 and the heap leaching barrel 3. A control motor 68 is installed on the connecting frame 21 through the motor seat. The output shaft of the control motor 68 is fixedly sleeved with a drive gear 69. An outer gear ring 60 meshing with the drive gear 69 is fixedly installed on the end of the heap leaching barrel 3 away from the opening.

[0045] During the specific implementation process, after the heap leaching barrel 3 is controlled by the cylinder 34 to rotate downward to a horizontal state, the heap leaching barrel 3 can be supported by the support ring 22 and the positioning ring 32, but the rotation direction of the heap leaching barrel 3 will not be restricted; then the control motor 68 is started, and the control motor 68 drives the drive gear 69 to rotate, and the drive gear 69 drives the heap leaching barrel 3 to rotate through the outer gear ring 60, and the heap leaching barrel 3 drives the storage barrel 5, the support shaft 61, the linkage gear 62, the positioning shaft 64, the control gear 65 and the moving gear 66 to move circumferentially as a whole. During this period, the inner gear ring cylinder 67 does not rotate, so the moving gear 66 moves circumferentially while Under the action of the inner gear ring cylinder 67, the moving gear 66 rotates, and the control gear 65 rotates synchronously through the support shaft 61. The control gear 65 drives multiple support shafts 61 to rotate synchronously through the linkage gear 62 and the auxiliary gear 63. The support shaft 61 drives the storage bucket 5 to rotate synchronously. Therefore, the heap leaching bucket 3 drives the storage bucket 5 to move circumferentially while the storage bucket 5 rotates. The circumferential movement of the storage bucket 5 can drive the lithium ore fragments to contact the leaching liquid at the bottom of the heap leaching bucket 3 in turn for leaching. The rotation of the storage bucket 5 can disrupt the stacking order of the lithium ore fragments therein, so that the leaching liquid can fully contact the lithium ore fragments, thereby enhancing the heap leaching effect.

[0046] Reference Figure 5 As shown, it should be noted that a plurality of annularly distributed dividing teeth 51 are installed inside the storage bucket 5, which are used to change the stacking order of the lithium ore fragments inside the storage bucket 5 as the storage bucket 5 rotates, so as to facilitate full contact between the lithium ore fragments and the leaching liquid, and avoid the lithium ore fragments from sticking to each other and being unable to be fully leached.

[0047] Reference Figure 6 、 Figure 7 and Figure 8 As shown, in order to facilitate the discharge of lithium ore fragments after leaching in the storage barrel 5 and replace the next batch of lithium ore fragments, a corresponding discharge unit 7 is also provided in this embodiment. Specifically, a stabilizing frame 52 is installed on the inner wall of the storage barrel 5 on the side away from the opening of the heap leaching barrel 3. The side of the stabilizing frame 52 away from the opening of the heap leaching barrel 3 is provided with a receiving plate 54 through a support 53. The support shaft 61 is installed on the side of the receiving plate 54 away from the support 53. The side of the storage barrel 5 away from the opening of the heap leaching barrel 3 is open and has a certain distance from the receiving plate 54, so that an annular gap for discharging lithium ore fragments is formed between the storage barrel 5 and the receiving plate 54.

[0048] Furthermore, in this embodiment, the discharging unit 7 includes a mesh cover tube 71 slidably mounted on the outside of the storage barrel 5. In the initial state, the mesh cover tube 71 surrounds the outside of the annular gap between the storage barrel 5 and the receiving plate 54, so as to cooperate with the storage barrel 5 to receive the lithium ore fragments and make them contact with the leaching liquid. The outer wall of the heap leaching barrel 3 is provided with a plurality of discharge holes corresponding to the positions of the plurality of storage barrels 5 near the outside of the heap leaching barrel 3. The outer wall of the heap leaching barrel 3 is rotatably mounted with an annular collecting bucket 72 covering the outside of the plurality of discharge holes. The annular collecting bucket 72 is connected to the workbench 1 for fixing the annular collecting bucket 72 to prevent the annular collecting bucket 72 from rotating synchronously with the heap leaching barrel 3, and a guide tube is installed at the bottom of the annular collecting bucket 72 for facilitating the discharge of lithium ore fragments.

[0049] Furthermore, in the present embodiment, a plurality of sliding grooves 73 connected to the discharge hole are provided inside the side wall of the heap leaching barrel 3, and a sealing plate 74 for opening and closing the discharge hole is slidably provided in the sliding groove 73, and a clearance hole connected to the sliding groove 73 is provided on the side of the discharge hole close to the opening of the heap leaching barrel 3, and the inner and outer walls of the sealing plate 74 are both installed with displacement blocks 75 that slide and dock in the clearance hole, and the outer walls of the displacement blocks 75 on the outer walls of the plurality of sealing plates 74 are commonly installed with an adjusting ring 76, and the adjusting ring 76 is covered on the outside of the heap leaching barrel 3; the outer walls of the plurality of mesh cover tubes 71 close to the outside of the heap leaching barrel 3 are all sleeved with connecting rings 77, and the outer wall of the connecting ring 77 is connected to the displacement block 75 on the inner wall of the sealing plate 74; in the initial state, the sealing plate 74 is located on the side of the sliding groove 73 away from the opening of the heap leaching barrel 3 and closes the discharge hole, so as to fully leach the lithium ore fragments in the storage barrel 5.

[0050] In the specific implementation process, after the lithium ore fragments in the storage bucket 5 are leached, the driving motor is controlled to stop running, and the rich liquid generated by the leaching in the heap leaching bucket 3 is discharged. Then, the cylinder 34 drives the heap leaching bucket 3 to tilt upward, and then drives the displacement block 75 and multiple sealing plates 74 to move as a whole to the side close to the opening of the heap leaching bucket 3 through the adjustment ring 76, so as to open the discharge port; at the same time, the displacement block 75 drives the multiple mesh cover cylinders 71 to move synchronously through the connecting ring 77, thereby opening the annular gap between the storage bucket 5 and the receiving plate 54 (at Figure 8 As shown in the figure, the lithium ore fragments in the storage bucket 5 are discharged into the annular collecting hopper 72 after passing through the annular gap and the discharge hole in sequence, and the lithium ore fragments can be discharged quickly, and then discharged to the outside of the device through the guide cylinder at the bottom of the annular collecting hopper 72.

[0051] After the lithium ore fragments are discharged, the control adjustment ring 76 is moved to the side away from the opening of the heap leaching barrel 3. The adjustment ring 76 drives the sealing plate 74, the connecting ring 77 and the mesh cover tube 71 to be reset to the initial state as a whole through the displacement block 75, so as to facilitate the re-addition of low-grade lithium ore fragments into the storage barrel 5, thereby facilitating the operation.

[0052] It should be noted that the connecting ring 77 on the outer wall of the mesh cover tube 71 in the middle of the heap leaching barrel 3 is rotatably connected to the connecting rings 77 on the outer walls of the multiple mesh cover tubes 71 near the outside of the heap leaching barrel 3. Therefore, when the multiple mesh cover tubes 71 outside the heap leaching barrel 3 are adjusted, the multiple mesh cover tubes 71 drive the mesh cover tube 71 in the middle of the heap leaching barrel 3 to move synchronously, thereby being able to simultaneously open and close the annular gaps of the multiple storage barrels 5, thereby increasing the discharge speed of the lithium ore fragments.

[0053] Reference Figure 9 and Figure 10 As shown, since the lithium ore fragments will continuously produce rich liquid containing lithium ions during the contact process with the leaching solution, it is necessary to collect the rich liquid in the heap leaching barrel 3 in time to avoid the rich liquid remaining in the heap leaching barrel 3, which will cause the lithium ions in the leaching liquid to be saturated and unable to continue leaching the lithium ions in the lithium ore fragments. Based on this, in this embodiment, a storage box 8 is installed on the upper end of the workbench 1, and a water pump 81 is installed on the side of the connecting frame 21 away from the heap leaching barrel 3. The water outlet end of the water pump 81 extends into the storage box 8, and a connecting hole is provided at the end away from the opening of the heap leaching barrel 3 of any two opposite support shafts 61. The water inlet end of the water pump 81 extends into the receiving tank and is then installed with a bifurcated pipe 82. The bifurcated pipe 82 has two suction ends, and the two suction ends respectively pass through the two connecting holes and extend to the inside of the mesh cover tube 71.

[0054] During the specific implementation process, when the heap leaching barrel 3 rotates and leaches the lithium ore fragments in the storage barrel 5, the water pump 81 is started. The water pump 81 extracts the rich liquid containing lithium ions after leaching the lithium ore fragments from the heap leaching barrel 3 through the bifurcated pipe 82, and discharges the rich liquid into the storage box 8; in addition, a supply pipe (not shown in the figure) can be connected to the baffle 4 to replenish the leaching liquid into the heap leaching barrel 3, so that the leaching liquid gradually flows from one side of the opening of the heap leaching barrel 3 to the other side. During the flow, the lithium ore fragments are leached to produce rich liquid, and the rich liquid is then extracted by the water pump 81. In this way, the rich liquid leached with the lithium ore fragments can be collected in time, and the leaching liquid can be replenished in time, ensuring continuous leaching of the lithium ore fragments, which is beneficial to improving the overall efficiency.

[0055] It should be noted that the water inlet end of the water pump 81 and the bifurcated pipe 82 are rotatably connected so that the bifurcated pipe 82 can rotate freely with the heap leaching barrel 3, but this will not adversely affect the transportation of rich liquid between the bifurcated pipe 82 and the water inlet end of the water pump 81.

[0056] Furthermore, in this embodiment, a feed port is provided at the upper end of the storage box 8 to facilitate the addition of chemical reagents that react with the rich liquid into the storage box 8 for purifying the rich liquid. The purified rich liquid is then subjected to corresponding filtration treatment to filter out impurities in the rich liquid, and the filtered solution is further extracted by precipitation or solvent extraction to obtain a lithium-containing solution, which is further processed to obtain a lithium product.

[0057] During operation: Step 1: First, low-grade lithium ore fragments are put into the multiple storage buckets 5 in the heap leaching barrel 3 through the opening, and then the leaching liquid is poured into the heap leaching barrel 3 so that the leaching liquid can immerse the lithium ore fragments in the storage bucket 5 at the bottom of the heap leaching barrel 3 in a horizontal state, and then the heap leaching barrel 3 is controlled to rotate by the driving unit 6. While the heap leaching barrel 3 rotates, the multiple storage buckets 5 inside it are driven to move synchronously in a circumferential direction. Since the lithium ore fragments will accumulate after being put into the storage bucket 5, the storage bucket 5 can disrupt the stacking order of the lithium ore fragments inside it while moving, thereby increasing the contact area between the lithium ore fragments and the leaching liquid, and the leaching liquid is always located at the bottom of the heap leaching barrel 3, so the leaching liquid can contact with the lithium ore fragments in the multiple storage buckets 5 in turn, which can replace the traditional heap leaching method, so that the lithium ore fragments and the leaching liquid are fully in contact and react, thereby enhancing the lithium extraction effect of low-grade lithium ore.

[0058] The second step is to start the cylinder 34, which contracts and drives the opening side of the heap leaching bucket 3 to tilt downward to a horizontal state through the positioning ring 32. The heap leaching bucket 3 can be supported by the support ring 22 and the positioning ring 32, but the rotation direction of the heap leaching bucket 3 will not be restricted. Then start the control motor 68, which drives the drive gear 69 to rotate. The drive gear 69 drives the heap leaching bucket 3 to rotate through the outer gear ring 60. The heap leaching bucket 3 drives the storage bucket 5, the support shaft 61, the linkage gear 62, the positioning shaft 64, the control gear 65 and the moving gear 66 to move circumferentially as a whole. During this period, the inner gear ring cylinder 67 does not rotate, so the moving gear 66 rotates. While moving in the circumferential direction, it rotates under the action of the inner gear ring cylinder 67, and the moving gear 66 drives the control gear 65 to rotate synchronously through the support shaft 61. The control gear 65 drives multiple support shafts 61 to rotate synchronously through the linkage gear 62 and the auxiliary gear 63, and the support shaft 61 drives the storage bucket 5 to rotate synchronously; thereby, the heap leaching barrel 3 drives the storage bucket 5 to move circumferentially while the storage bucket 5 can rotate. The circumferential movement of the storage bucket 5 can drive the lithium ore fragments to contact the leaching liquid at the bottom of the heap leaching barrel 3 in turn for leaching, and the rotation of the storage bucket 5 can disrupt the stacking order of the lithium ore fragments therein, so that the leaching liquid can fully contact the lithium ore fragments, thereby enhancing the heap leaching effect.

[0059] Step 3: When the heap leaching barrel 3 rotates and leaches the lithium ore fragments in the storage barrel 5, the water pump 81 is started. The water pump 81 extracts the rich liquid containing lithium ions after leaching the lithium ore fragments from the heap leaching barrel 3 through the bifurcated pipe 82, and discharges the rich liquid into the storage box 8; in addition, the leaching liquid can be replenished into the heap leaching barrel 3 through an external supply pipe, so that the leaching liquid gradually flows from one side of the opening of the heap leaching barrel 3 to the other side. During the flow, the lithium ore fragments are leached to produce rich liquid, and the rich liquid is then extracted by the water pump 81. In this way, the rich liquid leached with the lithium ore fragments can be collected in time, and the leaching liquid can be replenished in time to ensure continuous leaching of the lithium ore fragments, which is beneficial to improving the overall efficiency.

[0060] Step 4: After the leaching of the lithium ore fragments in the storage bucket 5 is completed, the driving motor is controlled to stop running, and the remaining rich liquid in the heap leaching bucket 3 is discharged through the water pump 81. Then the cylinder 34 drives the heap leaching bucket 3 to tilt upward, and then drives the displacement block 75 and multiple sealing plates 74 to move as a whole to the side close to the opening of the heap leaching bucket 3 through the adjusting ring 76 to open the discharge port; at the same time, the displacement block 75 drives the multiple mesh cover cylinders 71 to move synchronously through the connecting ring 77, thereby opening the annular gap between the storage bucket 5 and the receiving plate 54, so that the lithium ore fragments in the storage bucket 5 are discharged into the annular collecting bucket 72 after passing through the annular gap and the discharge hole in turn, and the rapid discharge of the lithium ore fragments can be ensured, and then discharged to the outside of the device through the guide cylinder at the bottom of the annular collecting bucket 72.

[0061] After the lithium ore fragments are discharged, the control adjustment ring 76 is moved to the side away from the opening of the heap leaching barrel 3. The adjustment ring 76 drives the sealing plate 74, the connecting ring 77 and the mesh cover tube 71 to be reset to the initial state as a whole through the displacement block 75, so as to facilitate the re-addition of low-grade lithium ore fragments into the storage barrel 5.

[0062] Step 5: Add chemical reagents that react with the rich liquid to the storage tank 8 to purify the rich liquid in the storage tank 8, and then perform corresponding filtering treatment on the purified rich liquid to filter out impurities in the rich liquid. The filtered solution is further extracted by precipitation or solvent extraction to obtain a lithium-containing solution, which is further processed to obtain a lithium product.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An integrated device for heap leaching lithium from low-grade lithium ore, comprising a workbench (1), a fixed frame (2) being mounted on the upper end of the workbench (1), a heap leaching barrel (3) for heap leaching lithium ore being movably mounted on the fixed frame (2), the heap leaching barrel (3) having an opening for conveniently placing fragments and leaching liquid on a side away from the fixed frame (2), a baffle (4) being detachably mounted on the opening, a plurality of storage barrels (5) for containing lithium ore fragments being arranged inside the heap leaching barrel (3), a plurality of through holes being opened on the outer wall of the storage barrel (5) for conveniently allowing leaching liquid to enter and leaching the lithium ore, and characterized in that: A driving unit (6) is installed between the workbench (1), the fixed frame (2) and the heap leaching barrel (3) for controlling the rotation of the heap leaching barrel (3) to fully leach the lithium ore in the storage barrel (5); a discharging unit (7) is provided between the storage barrel (5) and the heap leaching barrel (3) for quickly discharging the lithium ore fragments in the storage barrel (5) after leaching.

2. The integrated device for heap leaching lithium from low-grade lithium ore according to claim 1, characterized in that: A receiving tray (31) is installed on the inner wall of the heap leaching barrel (3) near the opening. The receiving tray (31) is provided with a plurality of through holes corresponding to the positions of the storage barrel (5). One end of the storage barrel (5) near the opening is inserted into the through holes and is flush with the receiving tray (31). The outer wall of the receiving tray (31) has an annular folded edge.

3. The integrated device for heap leaching of lithium from low-grade lithium ore according to claim 1, characterized in that: A connecting frame (21) is rotatably provided on the upper end of the fixing frame (2), a support ring (22) is installed on a side of the connecting frame (21) away from the fixing frame (2), and the support ring (22) is rotatably connected to an end of the heap leaching barrel (3) away from the opening; A positioning ring (32) is provided on the outer wall of the heap leaching barrel (3) at a side away from the support ring (22). A supporting seat (33) is rotatably mounted on the upper end of the workbench (1). Two cylinders (34) are mounted on the upper end of the supporting seat (33). The telescopic ends of the cylinders (34) are hinged to the bottom of the positioning ring (32).

4. The integrated device for heap leaching of lithium from low-grade lithium ore according to claim 1, characterized in that: The driving unit (6) comprises a receiving tank, a receiving tank is provided on a side of the inside of the heap leaching barrel (3) away from the opening, a support shaft (61) is provided on the end of the storage barrel (5) away from the opening, a plurality of support shafts (61) near the outside of the heap leaching barrel (3) are connected by a belt drive, an outer wall of any support shaft (61) near the outside of the heap leaching barrel (3) is provided with a linkage gear (62) located in the receiving tank, and an outer wall of the support shaft (61) in the middle of the heap leaching barrel (3) is provided with an auxiliary gear (63) located in the receiving tank; A positioning shaft (64) is rotatably provided at one end of the heap leaching barrel (3) away from the opening. One end of the positioning shaft (64) extends into the receiving groove and is sleeved with a control gear (65). The control gear (65) is meshed with the linkage gear (62) and the auxiliary gear (63).

5. The integrated device for heap leaching lithium from low-grade lithium ore according to claim 4, characterized in that: The positioning shaft (64) extends from one end of the control gear (65) to the outside of the heap leaching barrel (3) and is sleeved with a moving gear (66). An inner gear ring cylinder (67) meshing with the moving gear (66) is installed on one side of the connecting frame (21) close to the heap leaching barrel (3). A control motor (68) is mounted on the connecting frame (21) via a motor seat. An output shaft sleeve of the control motor (68) is provided with a drive gear (69). An outer gear ring (60) meshing with the drive gear (69) is mounted on one end of the heap leaching barrel (3) away from the opening.

6. The integrated device for heap leaching of lithium from low-grade lithium ore according to claim 1, characterized in that: A plurality of annularly distributed separating teeth (51) are installed inside the storage bucket (5) for changing the stacking order of the lithium ore fragments inside the storage bucket (5) as the storage bucket (5) rotates.

7. The integrated device for heap leaching of lithium from low-grade lithium ore according to claim 1, characterized in that: A stabilizing frame (52) is installed on the inner wall of the storage bucket (5) away from the opening of the heap leaching bucket (3); a receiving plate (54) is provided on the side of the stabilizing frame (52) away from the opening of the heap leaching bucket (3) via a support (53); and a support shaft (61) is installed on the side of the receiving plate (54) away from the support (53).

8. The integrated device for heap leaching lithium from low-grade lithium ore according to claim 4, characterized in that: The discharge unit (7) comprises a mesh cover cylinder (71) slidably mounted on the outside of the storage barrel (5); a plurality of discharge holes corresponding to the positions of the plurality of storage barrels (5) near the outside of the heap leaching barrel (3) are opened on the outer wall of the heap leaching barrel (3); and an annular collecting hopper (72) rotatably mounted on the outer wall of the heap leaching barrel (3) and covering the outside of the plurality of discharge holes.

9. The integrated device for heap leaching lithium from low-grade lithium ore according to claim 8, characterized in that: A plurality of sliding grooves (73) connected to the discharge hole are provided inside the side wall of the heap leaching barrel (3); a sealing plate (74) for opening and closing the discharge hole is slidably provided inside the sliding groove (73); displacement blocks (75) are installed on both the inner and outer side walls of the sealing plate (74); and an adjusting ring (76) is installed on the outer walls of the displacement blocks (75) on the outer side walls of the plurality of sealing plates (74); The outer walls of the plurality of mesh cover cylinders (71) close to the outside of the heap leaching barrel (3) are all sleeved with connecting rings (77), and the outer walls of the connecting rings (77) are connected to the displacement blocks (75) on the inner side walls of the sealing plate (74).

10. The integrated device for heap leaching of lithium from low-grade lithium ore according to claim 8, characterized in that: A storage box (8) is installed at the upper end of the workbench (1), and a water pump (81) is installed on the side of the connecting frame (21) away from the heap leaching barrel (3). The water outlet of the water pump (81) extends into the storage box (8), and a connecting hole is opened at one end of any two opposite supporting shafts (61) away from the opening of the heap leaching barrel (3). A bifurcated pipe (82) is installed after the water inlet of the water pump (81) extends into the receiving tank. The bifurcated pipe (82) has two suction ends, and the two suction ends respectively pass through the two connecting holes and extend into the interior of the mesh cover cylinder (71).

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