Continuous drying equipment for lithium carbonate purification device
By designing continuous drying equipment, the continuous drying of lithium carbonate is achieved by using screw conveyors and steam heating, the problems of high energy consumption and secondary pollution of existing equipment are solved, and the stable production of high-purity lithium carbonate is achieved.
Patent Information
- Application Number
- CN202422444886.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The existing lithium carbonate drying equipment is batch drying, which leads to an increase in energy consumption and material consumption. The disassembly and assembly process is prone to secondary pollution and continuous drying cannot be achieved.
A continuous drying equipment including a centrifuge, a screw conveyor, a continuous dryer, a dust collector, a blower and a steam system is designed. The crude lithium carbonate product is stably outputted to the continuous dryer through the screw conveyor, and the steam heating and dust collector filtration are used to achieve continuous drying and recycling of powder.
Continuous drying of lithium carbonate is achieved, energy consumption is reduced, moisture content is controlled within 200ppm, secondary pollution caused by intermittent operations is avoided, and output stability and reliability are ensured.
Smart Images
Figure CN223192041U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium carbonate purification and drying, in particular to continuous drying equipment for a lithium carbonate purification device. Background Art
[0002] Lithium carbonate is an inorganic compound, presenting as colorless monoclinic crystals that are slightly soluble in water. Its purification process primarily involves carbonization, thermal decomposition, centrifugation, and drying of industrial-grade lithium carbonate to produce high-purity lithium carbonate. Currently, drying equipment for lithium carbonate salts utilizes batch drying, which is incapable of continuous drying. This results in increased energy and material consumption, and the disassembly and repackaging process can easily lead to recontamination of the lithium carbonate. Therefore, improvements are needed in lithium carbonate drying equipment. Utility Model Content
[0003] The purpose of this utility model is to provide a continuous drying device for lithium carbonate purification device in response to the above-mentioned defects in the prior art, which effectively solves the disadvantages of intermittent drying in the prior art, realizes continuous drying, and effectively improves energy consumption.
[0004] The utility model discloses a continuous drying device for a lithium carbonate purification device, and its technical solution is as follows: comprising a centrifuge (1), a screw conveyor (2), a continuous dryer (3), a dust collector (4), an exhaust fan (5), a steam inlet pipe (6), a lithium carbonate continuous drying storage tank (7), and a steam condensate tank (8), wherein the lower end outlet of the centrifuge (1) is connected to the feed port of the screw conveyor (2), the discharge port of the screw conveyor (2) is connected to the upper feed port of the continuous dryer (3) through a pipeline, the upper part of the continuous dryer (3) is provided with a dust removal pipeline, the other end of the dust removal pipeline is connected to the upper end of the dust collector (4), and the lower end of the dust collector (4) is connected to the exhaust fan (5) through a pipeline; the lower end discharge port of the continuous dryer (3) is connected to the lithium carbonate continuous drying storage tank (7) through a pipeline, and the middle and lower part of the continuous dryer (3) is connected to the steam condensate tank (8) through a pipeline; the outer interlayer of the continuous dryer (3) is connected to the steam inlet pipe (6).
[0005] Preferably, the continuous dryer (3) comprises a dryer body (3.1), an interlayer (3.2), a support leg (3.3), a motor (3.4), a dust removal port (3.5), a feed port (3.6), a drain port (3.7), a discharge port (3.8), a first rake arm (3.9), a second rake arm (3.10), a first drying plate (3.11), a second drying plate (3.12), an outer rake blade (3.13), and an inner rake blade (3.14), wherein the outer wall of the dryer body (3.1) is provided with an interlayer (3.2), and the outer side of the middle portion of the interlayer (3.2) is connected to the steam inlet pipe (6); A motor (3.4) is installed on the top, and an output shaft of the motor (3.4) extends into the inner cavity of the dryer body (3.1). A plurality of first rake arms (3.9) and second rake arms (3.10) are evenly distributed on the output shaft. The first rake arms (3.9) cooperate with the first drying plate (3.11) below, and the second rake arms (3.10) cooperate with the second drying plate (3.12). A feed port (3.6) and a dust removal port (3.5) are provided on the outside of the motor (3.4) at the top of the dryer body (3.1), a drain port (3.7) is provided in the middle and lower part of the dryer body (3.1), and a discharge port (3.8) is provided at the bottom of the dryer body (3.1).
[0006] Preferably, outer rake blades (3.13) are installed below the first rake arm (3.9), and inner rake blades (3.14) are installed below the second rake arm (3.10), wherein the outer rake blades (3.13) are composed of multiple groups of blades that are uniformly inclined outward; and the inner rake blades (3.14) are composed of multiple groups of blades that are uniformly inclined inward.
[0007] Preferably, the outer side of the first drying plate (3.11) is fixed to the inner wall of the dryer body (3.1) via a support rod and is located above the second drying plate (3.12). A small through hole is provided in the center of the first drying plate (3.11), and the output shaft of the motor (3.4) passes through the small through hole downward.
[0008] Preferably, the outer end of the second drying plate (3.12) is fixedly connected to the inner wall of the dryer body (3.1), and a large through hole is provided in the center of the second drying plate (3.12), and an annular material discharge cavity is formed between the output shaft of the motor (3.4) and the large through hole.
[0009] Preferably, the inner diameter of the large through hole is larger than the inner diameter of the small through hole.
[0010] The beneficial effects of the utility model are:
[0011] The utility model stably outputs the crude lithium carbonate from the centrifuge to the continuous dryer through a screw conveyor, starts the stirring of the dryer, controls the drying temperature to 130°C, and simultaneously turns on the dust collector. The moisture and dust in the dryer body are filtered and discharged through the dust collector by an exhaust fan, and the powder in the dust collector is recovered and reused. The moisture content of the high-purity lithium carbonate obtained by the continuous dryer can be controlled within 200ppm, and no secondary pollution is caused by intermittent operation, and the output is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a structural diagram of a continuous dryer;
[0014] Figure 3 It is a structural schematic diagram of the first drying plate;
[0015] Figure 4 It is a structural schematic diagram of the second drying plate;
[0016] In the figure above: centrifuge 1, screw conveyor 2, continuous dryer 3, dust collector 4, exhaust fan 5, steam inlet pipe 6, lithium carbonate continuous drying storage tank 7, steam condensate tank 8, dryer body 3.1, interlayer 3.2, support leg 3.3, motor 3.4, dust removal port 3.5, feed port 3.6, drain port 3.7, discharge port 3.8, first rake arm 3.9, second rake arm 3.10, first drying plate 3.11, second drying plate 3.12, outer rake blades 3.13, inner rake blades 3.14. Small through-hole a1, support rod a2, large through-hole b1. DETAILED DESCRIPTION
[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.
[0018] Example 1. A continuous drying equipment for a lithium carbonate purification device mentioned in the present invention, whose technical solution is: comprising a centrifuge 1, a screw conveyor 2, a continuous dryer 3, a dust collector 4, an exhaust fan 5, a steam inlet pipe 6, a lithium carbonate continuous drying storage tank 7, and a steam condensate tank 8, wherein the lower end outlet of the centrifuge 1 is connected to the feed port of the screw conveyor 2, and the discharge port of the screw conveyor 2 is connected to the upper feed port of the continuous dryer 3 through a pipeline; a dust removal pipeline is provided on the upper part of the continuous dryer 3, the other end of the dust removal pipeline is connected to the upper end of the dust collector 4, and the lower end of the dust collector 4 is connected to the exhaust fan 5 through a pipeline; the lower end discharge port of the continuous dryer 3 is connected to the lithium carbonate continuous drying storage tank 7 through a pipeline, and the middle and lower parts of the continuous dryer 3 are connected to the steam condensate tank 8 through a pipeline; the outer interlayer of the continuous dryer 3 is connected to the steam inlet pipe 6.
[0019] Preferably, the continuous dryer 3 comprises a dryer body 3.1, an interlayer 3.2, a supporting leg 3.3, a motor 3.4, a dust removal port 3.5, a feed port 3.6, a drain port 3.7, a discharge port 3.8, a first rake arm 3.9, a second rake arm 3.10, a first drying plate 3.11, a second drying plate 3.12, an outer rake blade 3.13, and an inner rake blade 3.14. The outer wall of the dryer body 3.1 is provided with an interlayer 3.2, and the outer side of the middle of the interlayer 3.2 is connected to the steam inlet pipe 6; the top of the dryer body 3.1 is provided with a A motor 3.4 is installed, the output shaft of which extends into the interior of the dryer body 3.1. Multiple sets of first rake arms 3.9 and second rake arms 3.10 are evenly distributed on the output shaft. The first rake arms 3.9 engage with a first drying plate 3.11 below, while the second rake arms 3.10 engage with a second drying plate 3.12. A feed port 3.6 and a dust removal port 3.5 are provided on the outside of the motor 3.4 at the top of the dryer body 3.1. A drain port 3.7 is provided in the lower middle portion of the dryer body 3.1. A discharge port 3.8 is provided at the bottom of the dryer body 3.1.
[0020] Preferably, outer rake blades 3.13 are installed below the first rake arm 3.9, and inner rake blades 3.14 are installed below the second rake arm 3.10. The outer rake blades 3.13 are composed of multiple groups of blades uniformly inclined outward; the inner rake blades 3.14 are composed of multiple groups of blades uniformly inclined inward.
[0021] Preferably, the outer side of the first drying plate 3.11 is fixed to the inner wall of the dryer body 3.1 by a support rod a2 and is located above the second drying plate 3.12. A small through hole a1 is provided in the center of the first drying plate 3.11, and the output shaft of the motor 3.4 passes through the small through hole a1 downward.
[0022] Preferably, the outer end of the second drying plate 3.12 is fixedly connected to the inner wall of the dryer body 3.1, and a large through hole b1 is provided in the center of the second drying plate 3.12, and an annular feeding cavity is formed between the output shaft of the motor 3.4 and the large through hole b1.
[0023] Preferably, the inner diameter of the large through hole b1 is larger than the inner diameter of the small through hole a1, and the outer diameter of the second drying plate 3.12 is larger than the outer diameter of the first drying plate 3.11.
[0024] When the utility model is used,
[0025] 1. The crude lithium carbonate obtained from centrifuge 1 is quantitatively and continuously conveyed to the feed port of the continuous dryer via a screw conveyor;
[0026] Second, crude lithium carbonate is continuously added to the first drying plate 3.11 at the top of the dryer 3. First rake arm 3.9 with outer rake blades 3.13 rotates, causing the outer rake blades 3.13 to continuously tumble the material. The material moves along the surface of the first drying plate 3.11, is transferred to the outer edge of the first drying plate 3.11, and falls to the outer edge of the second drying plate 3.12 below. The material on the second drying plate 3.12 moves inward and falls from the central annular discharge cavity to the first drying plate of the next layer. 3.11; the first drying tray 3.11 and the second drying tray 3.12 are arranged alternately up and down, allowing the material to flow continuously through the entire dryer body. In addition, steam is introduced to heat and dry the dryer body until it is finally discharged from the discharge port 3.8 at the lower end of the dryer body 3.1 and then sent to the lithium carbonate continuous drying tank 7. The dust in the dryer body 3.1 is continuously extracted by the bag dust collector 4 and the exhaust fan 5. If steam condensation is formed in the dryer body 3.1, it is discharged through the drain port 3.7.
[0027] Example 2. A continuous drying equipment for a lithium carbonate purification device mentioned in the present invention, whose technical solution is: comprising a centrifuge 1, a screw conveyor 2, a continuous dryer 3, a dust collector 4, an exhaust fan 5, a steam inlet pipe 6, a lithium carbonate continuous drying storage tank 7, and a steam condensate tank 8. The lower end outlet of the centrifuge 1 is connected to the feed port of the screw conveyor 2, and the discharge port of the screw conveyor 2 is connected to the upper feed port of the continuous dryer 3 through a pipeline. The upper part of the continuous dryer 3 is provided with a dust removal pipeline, the other end of the dust removal pipeline is connected to the upper end of the dust collector 4, and the lower end of the dust collector 4 is connected to the exhaust fan 5 through a pipeline; the lower end discharge port of the continuous dryer 3 is connected to the lithium carbonate continuous drying storage tank 7 through a pipeline, and the middle and lower parts of the continuous dryer 3 are connected to the steam condensate tank 8 through a pipeline; the outer interlayer of the continuous dryer 3 is connected to the steam inlet pipe 6.
[0028] The continuous dryer 3 comprises a dryer body 3.1, an interlayer 3.2, supporting legs 3.3, a motor 3.4, a dust removal port 3.5, a feed port 3.6, a drain port 3.7, a discharge port 3.8, a first rake arm 3.9, a second rake arm 3.10, a first drying plate 3.11, a second drying plate 3.12, outer rake blades 3.13, and inner rake blades 3.14. The outer wall of the dryer body 3.1 is provided with an interlayer 3.2, and the outer side of the middle of the interlayer 3.2 is connected to the steam inlet pipe 6; the top of the dryer body 3.1 is provided with an electric motor. The output shaft of the motor 3.4 extends into the inner cavity of the dryer body 3.1, and multiple sets of first rake arms 3.9 and second rake arms 3.10 are evenly distributed on the output shaft. The first rake arms 3.9 engage with the first drying plate 3.11 below, and the second rake arms 3.10 engage with the second drying plate 3.12. A feed port 3.6 and a dust removal port 3.5 are provided on the outside of the motor 3.4 at the top of the dryer body 3.1. A drain port 3.7 is provided in the lower middle portion of the dryer body 3.1. A discharge port 3.8 is provided at the bottom of the dryer body 3.1.
[0029] The difference from Example 1 is:
[0030] Reference Figure 3 and Figure 4 The upper surface of the first drying plate 3.11 is thick in the middle and thin at the outer edge, which facilitates the outward movement of the lithium carbonate material; while the upper surface of the second drying plate 3.12 is thin in the middle and thick at the outer edge, which facilitates the inward movement of the lithium carbonate material.
[0031] The above description is merely a preferred embodiment of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modifications or equivalent transformations based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A continuous drying device for a lithium carbonate purification device, characterized in that: The invention comprises a centrifuge (1), a screw conveyor (2), a continuous dryer (3), a dust collector (4), an exhaust fan (5), a steam inlet pipe (6), a lithium carbonate continuous drying storage tank (7), and a steam condensate tank (8), wherein the lower outlet of the centrifuge (1) is connected to the feed port of the screw conveyor (2), the discharge port of the screw conveyor (2) is connected to the upper feed port of the continuous dryer (3) through a pipeline, the upper part of the continuous dryer (3) is provided with a dust removal pipeline, the other end of the dust removal pipeline is connected to the upper end of the dust collector (4), and the lower end of the dust collector (4) is connected to the exhaust fan (5) through a pipeline; the lower discharge port of the continuous dryer (3) is connected to the lithium carbonate continuous drying storage tank (7) through a pipeline, and the middle and lower part of the continuous dryer (3) is connected to the steam condensate tank (8) through a pipeline; the outer interlayer of the continuous dryer (3) is connected to the steam inlet pipe (6).
2. The continuous drying device for lithium carbonate purification device according to claim 1, wherein: The continuous dryer (3) comprises a dryer body (3.1), an interlayer (3.2), a support leg (3.3), a motor (3.4), a dust removal port (3.5), a feed port (3.6), a drain port (3.7), a discharge port (3.8), a first rake arm (3.9), a second rake arm (3.10), a first drying plate (3.11), a second drying plate (3.12), an outer rake blade (3.13), and an inner rake blade (3.14). The outer wall of the dryer body (3.1) is provided with an interlayer (3.2), and the outer side of the middle of the interlayer (3.2) is connected to a steam inlet pipe (6); the top of the dryer body (3.1) is provided with a steam inlet pipe (6); A motor (3.4) is installed, the output shaft of the motor (3.4) extends into the inner cavity of the dryer body (3.1), and a plurality of first rake arms (3.9) and second rake arms (3.10) are evenly distributed on the output shaft, the first rake arms (3.9) cooperate with the first drying plate (3.11) below, and the second rake arms (3.10) cooperate with the second drying plate (3.12); a feed port (3.6) and a dust removal port (3.5) are provided on the outside of the motor (3.4) at the top of the dryer body (3.1), a drain port (3.7) is provided in the middle and lower part of the dryer body (3.1), and a discharge port (3.8) is provided at the bottom of the dryer body (3.1).
3. The continuous drying device for lithium carbonate purification device according to claim 2, wherein: An outer rake blade (3.13) is installed below the first rake arm (3.9), and an inner rake blade (3.14) is installed below the second rake arm (3.10). The outer rake blade (3.13) is composed of multiple groups of blades that are evenly inclined outward; and the inner rake blade (3.14) is composed of multiple groups of blades that are evenly inclined inward.
4. The continuous drying device for lithium carbonate purification device according to claim 3, wherein: The outer side of the first drying plate (3.11) is fixed to the inner wall of the dryer body (3.1) via a support rod (a2) and is located above the second drying plate (3.12). A small through hole (a1) is provided in the center of the first drying plate (3.11), and the output shaft of the motor (3.4) passes through the small through hole (a1) downward.
5. The continuous drying device for lithium carbonate purification device according to claim 4, wherein: The outer end of the second drying plate (3.12) is fixedly connected to the inner wall of the dryer body (3.1), and a large through hole (b1) is provided at the center of the second drying plate (3.12), and an annular material discharge cavity is formed between the output shaft of the motor (3.4) and the large through hole (b1).
6. The continuous drying device for lithium carbonate purification device according to claim 5, wherein: The inner diameter of the large through hole (b1) is larger than the inner diameter of the small through hole (a1).