Device for roasting and leaching lithium by utilizing ternary material

Abstract

The utility model relates to the technical field of metal extraction, in particular to a device for roasting and leaching lithium by utilizing ternary materials, which comprises a roasting furnace, a placing hole is arranged at the bottom of the roasting furnace, a bearing column is slidably connected onto the inner wall of the placing hole, and a plurality of placing trays are fixedly connected onto the bearing column. The periphery and the bottom of the inner wall of the roasting furnace are fixedly connected with a first resistance heating wire and a second resistance heating wire correspondingly, the temperature of the roasting furnace can be rapidly increased by matching with a heat conduction plate, meanwhile, lithium-containing minerals are placed on a plurality of placing discs in a layering mode, the lithium-containing minerals are placed in a layering mode, the roasting uniformity is further improved, and the roasting efficiency is improved. Meanwhile, waste gas generated during roasting is conveyed into the heating barrel through the conveying pipe, the copper plate is heated, the temperature in the heating barrel is increased, meanwhile, fresh air penetrates through the heating barrel through the ventilation pipe and is conveyed into the roasting furnace through the air blower, cold air entering the roasting furnace is preheated, energy recycling is achieved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal extraction, in particular to a device for leaching lithium by roasting ternary materials. Background Art

[0002] As we all know, with the rapid development of the new energy industry, lithium, as an important raw material in battery manufacturing, its extraction and purification technology is particularly important. In the existing lithium extraction process, roasting and leaching lithium from ternary materials is a common technical method.

[0003] After searching, the utility model patent with Chinese patent publication number CN203794645U discloses a device for extracting lithium carbonate from spodumene, which includes a silo for storing spodumene, a rotary kiln for high-temperature calcination and transformation of spodumene, a ball mill for grinding and refining β-type spodumene, a mixed acid machine for mixing spodumene and concentrated sulfuric acid, an acidification kiln for acidifying and roasting the mixture, a leaching tank for slurry adjustment, neutralization and leaching, a filter for filtering the slurry after leaching, a purification tank for purifying and removing impurities from the leachate, an evaporator for concentrating and evaporating the purified liquid, a centrifuge for separating lithium carbonate, and a dryer for drying lithium carbonate. The utility model extracts lithium carbonate from spodumene through the processing steps of conversion roasting, acidification roasting, leaching purification, evaporation concentration, filtration and drying, etc., and has the advantages of short process flow, high lithium extraction rate, good product quality, etc. Compared with lithium extraction from limestone, the advantages of high yield, low energy consumption, low cost, etc. are more significant, and it is suitable for industrial lithium extraction.

[0004] Although the above technical solution solves the problems of low yield, high energy consumption and high cost, in the above technical solution, when the mineral containing lithium is roasted, it is easy to cause uneven heat distribution, which may affect the leaching rate of lithium, and the utilization rate of the waste gas generated during roasting is also relatively low. Therefore, a device for roasting and leaching lithium using ternary materials is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a device for leaching lithium by roasting ternary materials. In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A device for leaching lithium by roasting ternary materials comprises a roasting furnace, and further comprises a first resistance heating wire fixedly connected to the inner wall of the roasting furnace, a heat conducting plate fixedly connected to the inner wall of the bottom of the roasting furnace, and the heat conducting plate wraps the first resistance heating wire, a second resistance heating wire fixedly connected to the bottom of the roasting furnace, a placement hole is provided at the bottom of the roasting furnace, a bearing column is slidably connected to the inner wall of the placement hole, a plurality of placement plates are fixedly connected to the bearing column, each of the placement plates is provided with a sieve hole, the top of each of the placement plates is detachably connected to a first cover plate, and the sieve holes all penetrate the first cover plate, the top side of the roasting furnace is fixedly connected to a conveying pipe, the other end of the conveying pipe is fixedly connected to a heating barrel, a copper plate is fixedly connected to the inner wall of the heating barrel, and the copper plate is fixedly connected to the bottom of the heating barrel, a ventilation pipe is fixedly connected to the bottom side of the roasting furnace, the other end of the ventilation pipe penetrates the heating barrel and extends to the outside, and the other end of the ventilation pipe is fixedly connected to a blower.

[0007] Preferably, two limit grooves are provided at the bottom of the roasting furnace, and each of the limit grooves is communicated with the placement hole, a circular groove is provided at the bottom of the supporting column, and a fixing plate is fixedly connected to the inner walls on both sides of the circular groove, square grooves are provided on both sides of the bottom of the supporting column, and each of the square grooves is communicated with the circular groove, a limit block is slidably connected to the inner wall of each square groove, each limit block is fixedly connected with a sliding column, and each sliding column extends through the fixed plate to the outside, the extending end of each sliding column is fixedly connected with a triangular block, each sliding column is fixedly connected with a spring, and each spring is fixedly connected to the inner wall of the fixed plate.

[0008] Preferably, a leaching tank is placed on the side of the roasting furnace, a trapezoidal block is fixedly connected to the bottom of the leaching tank, a filter tube is fixedly connected to the bottom of the trapezoidal block, and a containing bucket is fixedly connected to the other end of the filter tube.

[0009] Preferably, a second cover plate is detachably connected to the top of the roasting furnace, and a second handle is fixedly connected to the top of the second cover plate.

[0010] Preferably, a third cover plate is detachably connected to the top of the leaching tank, a third handle is fixedly connected to the top of the third cover plate, and a power box is fixedly connected to the top of the third cover plate.

[0011] Preferably, a rotation hole is opened on the bearing column, a threaded column is connected to the inner wall of the rotation hole through threads, and a first handle is fixedly connected to the top of the threaded column.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] The first resistance heating wire and the second resistance heating wire are fixedly connected to the inner wall and the bottom of the roasting furnace respectively. The temperature of the roasting furnace can be quickly increased by combining with a heat conducting plate. At the same time, the lithium-containing minerals are placed on multiple placement trays and placed in layers in a layered manner to further improve the uniformity of roasting. At the same time, the waste gas generated during roasting is transported to the heating barrel through a conveying pipe to heat the copper plate and increase the temperature in the heating barrel. At the same time, the blower transports fresh air through the heating barrel through the ventilation pipe to the roasting furnace to preheat the cold air entering the roasting furnace, thereby realizing energy recycling and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the placement plate of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the fixing plate of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the second resistance heating wire of the utility model.

[0018] Wherein: 1. roasting furnace; 2. first resistance heating wire; 3. heat conducting plate; 4. second resistance heating wire; 5. bearing column; 6. placing plate; 7. first cover plate; 8. conveying pipe; 9. heating barrel; 10. copper plate; 11. ventilation pipe; 12. blower; 13. fixing plate; 14. limiting block; 15. sliding column; 16. triangular block; 17. spring; 18. trapezoidal block; 19. filter tube; 20. holding barrel; 21. second cover plate; 22. second handle; 23. third cover plate; 24. third handle; 25. power box; 26. threaded column; 27. first handle; 28. leaching tank. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4, a device for leaching lithium by roasting ternary materials, including a roasting furnace 1, the roasting furnace 1 is the main part, used for roasting ternary materials, a first resistance heating wire 2 is fixedly connected to the inner wall of the roasting furnace 1, used for providing the main heating function, a heat conducting plate 3 is fixedly connected to the inner wall of the bottom of the roasting furnace 1, and the heat conducting plate 3 wraps the first resistance heating wire 2, and the heat conducting plate 3 wraps the first resistance heating wire 2 to ensure uniform heat distribution, a second resistance heating wire 4 is fixedly connected to the bottom of the roasting furnace 1 as an auxiliary heating means to further improve the roasting effect, a placement hole is opened at the bottom of the roasting furnace 1, a bearing column 5 is slidably connected to the inner wall of the placement hole, and a plurality of placement trays 6 are fixedly connected to the bearing column 5 for placing the ternary material, and each placement tray 6 is provided with a sieve hole, which is used to heat the material evenly during the roasting process and allow gas and liquid The top of each placement plate 6 is detachably connected to a first cover plate 7, and the sieve holes all penetrate the first cover plate 7 to facilitate the addition and removal of materials. A conveying pipe 8 is fixedly connected to the top side of the roasting furnace 1 for conveying the waste gas in the roasting process to the heating barrel 9. The other end of the conveying pipe 8 is fixedly connected to the heating barrel 9. A copper plate 10 is fixedly connected to the inner wall of the heating barrel 9, and the copper plate 10 is fixedly connected to the bottom of the heating barrel 9. The function of the heating barrel 9 is to cooperate with the copper plate 10 to heat the waste gas during the transportation, heat the air entering the roasting furnace 1, and preheat it. A ventilation pipe 11 is fixedly connected to the bottom side of the roasting furnace 1, and the other end of the ventilation pipe 11 penetrates the heating barrel 9 and extends to the outside. The other end of the ventilation pipe 11 is fixedly connected to a blower 12 for providing the airflow required for roasting to ensure gas exchange and heat distribution during roasting.

[0021] Two limit grooves are provided at the bottom of the roasting furnace 1, and each limit groove is communicated with the placement hole, providing additional support and positioning for the bearing column 5, ensuring the stability and accuracy of the bearing column 5 in the roasting furnace 1, and a circular groove is provided at the bottom of the bearing column 5 to provide an installation and fixing position for the sliding column 15 and the spring 17 to ensure that the sliding column 15 and the spring 17 can work normally, and a fixing plate 13 is fixedly connected to the inner walls of both sides of the circular groove, square grooves are provided on both sides of the bottom of the bearing column 5, and the square grooves are communicated with the circular grooves, and the inner walls of the square grooves are slidably connected to the limit blocks 14, and each limit block 14 is fixedly connected to the sliding column 15, and each sliding column 15 passes through the fixed plate 13 and extends Extending to the outside, the sliding connection between the square groove and the limit block 14 allows the bearing column 5 to have a certain adjustment range in the roasting furnace 1 to adapt to different working requirements. The extending end of each sliding column 15 is fixedly connected with a triangular block 16, and each sliding column 15 is fixedly connected with a spring 17, and each spring 17 is fixedly connected to the inner wall of the fixed plate 13. The combined design of the sliding column 15 and the triangular block 16 can facilitate manual adjustment by the operator. When the bearing column 5 needs to be fixed in a certain position, the sliding column 15 is moved by operating the threaded column to cooperate with the triangular block 16, thereby driving the limit block 14 to slide in the square groove until the limit block 14 is stuck in the limit groove, thereby realizing the fixation of the bearing column 5.

[0022] A leaching tank 28 is placed on the side of the roasting furnace 1, and a trapezoidal block 18 is fixedly connected to the bottom of the leaching tank 28. The design of the trapezoidal block 18 takes into account the smoothness of the liquid flow. A filter tube 19 is fixedly connected to the bottom of the trapezoidal block 18 to achieve solid-liquid separation and facilitate subsequent processing. The other end of the filter tube 19 is fixedly connected to a holding bucket 20 to collect the liquid filtered by the filter tube 19 for subsequent processing or storage.

[0023] A second cover plate 21 is detachably connected to the top of the roasting furnace 1 to protect the internal structure of the roasting furnace 1 and prevent heat loss and external impurities from entering. A second handle 22 is fixedly connected to the top of the second cover plate 21 to facilitate the operator to open or close the second cover plate 21 to add or remove materials.

[0024] A third cover plate 23 is detachably connected to the top of the leaching tank 28 to protect the internal structure of the leaching tank 28 and prevent liquid from splashing and external impurities from entering. A third handle 24 is fixedly connected to the top of the third cover plate 23 to facilitate the operator to open or close the third cover plate 23 to add, filter or remove liquid. A power box 25 is fixedly connected to the top of the third cover plate 23, which includes a driving device for driving the rotation of the supporting column 5 to accelerate the leaching process or ensure the uniformity of the leaching liquid.

[0025] A rotating hole is provided on the bearing column 5, and a threaded column 26 is connected to the inner wall of the rotating hole through a thread. A first handle 27 is fixedly connected to the top of the threaded column 26. The function of the first handle 27 is to facilitate the rotation of the threaded column 26. The function of the threaded column 26 is to drive the limit block 14 to slide by moving, thereby limiting the bearing column 5 and preventing the bearing column 5 from falling off.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for leaching lithium by roasting ternary materials, comprising a roasting furnace (1), characterized in that: The roasting furnace (1) further comprises a first resistance heating wire (2) fixedly connected to the inner wall of the roasting furnace (1), a heat conducting plate (3) fixedly connected to the inner wall of the bottom of the roasting furnace (1), and the heat conducting plate (3) wraps up the first resistance heating wire (2), a second resistance heating wire (4) fixedly connected to the bottom of the roasting furnace (1), a placement hole is provided at the bottom of the roasting furnace (1), a bearing column (5) is slidably connected to the inner wall of the placement hole, a plurality of placement plates (6) are fixedly connected to the bearing column (5), each of the placement plates (6) is provided with a sieve hole, and the top of each of the placement plates (6) can be detachably connected. There is a first cover plate (7), and the sieve holes all pass through the first cover plate (7); a conveying pipe (8) is fixedly connected to the top side of the roasting furnace (1); the other end of the conveying pipe (8) is fixedly connected to a heating barrel (9); a copper plate (10) is fixedly connected to the inner wall of the heating barrel (9), and the copper plate (10) is fixedly connected to the bottom of the heating barrel (9); a ventilation pipe (11) is fixedly connected to the bottom side of the roasting furnace (1); the other end of the ventilation pipe (11) passes through the heating barrel (9) and extends to the outside; the other end of the ventilation pipe (11) is fixedly connected to a blower (12).

2. The device for leaching lithium by roasting ternary materials according to claim 1, characterized in that: The bottom of the roasting furnace (1) is provided with two limit grooves, and each of the limit grooves is communicated with the placement hole. The bottom of the supporting column (5) is provided with a circular groove, and a fixing plate (13) is fixedly connected to the inner walls of both sides of the circular groove. Square grooves are provided on both sides of the bottom of the supporting column (5), and each of the square grooves is communicated with the circular groove. A limit block (14) is slidably connected to the inner wall of each square groove. Each limit block (14) is fixedly connected with a sliding column (15), and each sliding column (15) passes through the fixing plate (13) and extends to the outside. The extended end of each sliding column (15) is fixedly connected with a triangular block (16). Each sliding column (15) is fixedly connected with a spring (17), and each spring (17) is fixedly connected to the inner wall of the fixing plate (13).

3. The device for leaching lithium by roasting ternary materials according to claim 2, characterized in that: A leaching tank (28) is placed on the side of the roasting furnace (1), the bottom of the leaching tank (28) is fixedly connected to a trapezoidal block (18), the bottom of the trapezoidal block (18) is fixedly connected to a filter tube (19), and the other end of the filter tube (19) is fixedly connected to a containing bucket (20).

4. The device for leaching lithium by roasting ternary materials according to claim 3, characterized in that: A second cover plate (21) is detachably connected to the top of the roasting furnace (1), and a second handle (22) is fixedly connected to the top of the second cover plate (21).

5. The device for leaching lithium by roasting ternary materials according to claim 4, characterized in that: The top of the leaching tank (28) is detachably connected to a third cover plate (23), the top of the third cover plate (23) is fixedly connected to a third handle (24), and the top of the third cover plate (23) is fixedly connected to a power box (25).

6. The device for leaching lithium by roasting ternary materials according to claim 5, characterized in that: The bearing column (5) is provided with a rotation hole, the inner wall of the rotation hole is connected with a threaded column (26) via a thread, and the top of the threaded column (26) is fixedly connected with a first handle (27).

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