Roasting device for preparing lithium carbonate

Abstract

The utility model relates to the technical field of lithium carbonate preparation, and discloses a roasting device for preparing lithium carbonate, which comprises an ash collecting barrel and supporting seats symmetrically arranged on a support, a roasting furnace is arranged between the two supporting seats, and a feeding pipe and a discharging pipe are respectively arranged on the two supporting seats. The ash collecting barrel is arranged in the roasting furnace, the multiple ash inlet mechanisms are arranged on the ash collecting barrel, the ash discharging pipe is connected to one end of the ash collecting barrel, dust particles falling on the ash collecting barrel enter the ash collecting barrel through the outer ash inlet pipes and the multiple inner ash inlet pipes of the ash inlet mechanisms and then are discharged through the ash discharging pipe, and accumulation of the dust particles is prevented.

Description

Technical Field

[0001] This utility model relates to the field of lithium carbonate preparation technology, specifically a roasting apparatus for preparing lithium carbonate. Background Technology

[0002] The preparation of lithium carbonate requires the use of a roasting method. The roasting of lithium carbonate refers to the process of physicochemical transformation of crude lithium carbonate through high-temperature heat treatment, and the roasting of lithium carbonate requires the use of a roasting device for preparing lithium carbonate.

[0003] Currently, some roasting devices for preparing lithium carbonate on the market include, for example, a utility model patent with authorization announcement number CN221685191U that discloses a roasting device for preparing lithium carbonate. This device inputs high-temperature gas into the heating channel through an air inlet pipe, thereby heating the raw material from the inside, so that the heat of the high-temperature gas can be fully absorbed, thereby improving the utilization rate of thermal energy. In addition, the heating channel is driven by a motor to rotate, thereby tumbling the raw material in the roasting channel to achieve uniform heating. However, due to the decomposition, tumbling and collision of materials during the roasting process, a large number of dust particles are generated. The accumulation of these dust particles will affect the roasting efficiency and product quality.

[0004] Therefore, we propose a calcination apparatus for preparing lithium carbonate in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to solve the problem that some current lithium carbonate roasting devices generate a large amount of dust particles during the roasting process due to the decomposition, tumbling and collision of materials. The accumulation of these dust particles affects the roasting efficiency and product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a calcination apparatus for preparing lithium carbonate, comprising: support seats symmetrically arranged on a support frame, and a calcination furnace disposed between the two support seats;

[0007] An ash collection cylinder is installed inside a calcining furnace. The ash collection cylinder is equipped with multiple ash inlet mechanisms, and one end of the ash collection cylinder is connected to an ash discharge pipe.

[0008] The two support bases are respectively equipped with a feed pipe and a discharge pipe.

[0009] Furthermore, the ash inlet mechanism includes an external ash inlet pipe and multiple internal ash inlet pipes, as well as connecting bolts and connecting nuts. The external ash inlet pipe and multiple internal ash inlet pipes are all configured as tapered pipe structures, and the external ash inlet pipe includes multiple branch pipes, each of which is connected to a first connecting plate. The internal ash inlet pipe includes a tapered pipe body, which is connected to a second connecting plate. The multiple internal ash inlet pipes are all located inside the external ash inlet pipe. The first connecting plate and the second connecting nut are connected and fixed together by connecting bolts and connecting nuts.

[0010] Furthermore, a baffle screen is installed inside the external ash inlet pipe.

[0011] Furthermore, a heating shell is provided on the outside of the roasting furnace, and a heat insulation layer is provided on the inner wall of the heating shell. An air inlet pipe and an air outlet pipe are respectively provided on the heating shell near both ends.

[0012] Furthermore, the roasting furnace is tilted, and the tilt angle of the roasting furnace is 5-10°.

[0013] Furthermore, the inner wall of the roasting furnace is provided with multiple uniformly distributed material lifting plates.

[0014] Furthermore, a gear ring is fitted onto the roasting furnace, and a drive device that cooperates with the gear ring is provided on the support.

[0015] The beneficial effects of this utility model are as follows: By setting up an ash collection cylinder in the calcining furnace, setting up multiple ash inlet mechanisms on the ash collection cylinder, and connecting an ash discharge pipe to one end of the ash collection cylinder, the dust particles falling on the ash collection cylinder enter the ash collection cylinder through the outer ash inlet pipe and multiple inner ash inlet pipes of the ash inlet mechanism, and are then discharged through the ash discharge pipe, thus preventing the accumulation of dust particles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the calcination apparatus for preparing lithium carbonate according to this utility model;

[0017] Figure 2 This is a first cross-sectional view of the calcination apparatus for preparing lithium carbonate according to this utility model;

[0018] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the local structure A;

[0019] Figure 4 This is a second cross-sectional view of the calcination apparatus for preparing lithium carbonate according to this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the calcination apparatus for preparing lithium carbonate according to this utility model;

[0021] Figure 6 This is a schematic diagram of the ash inlet mechanism of the calcination apparatus for preparing lithium carbonate according to this utility model.

[0022] The names corresponding to each mark in the diagram:

[0023] 1. Bracket; 2. Support base; 3. Roasting furnace; 4. Ash collection cylinder; 5. Ash feeding mechanism; 51. External ash inlet pipe; 511. Branch pipe body; 512. First connecting plate; 52. Internal ash inlet pipe; 521. Conical pipe body; 522. Second connecting plate; 53. Connecting bolt; 54. Connecting nut; 55. Fixing bolt; 6. Ash discharge pipe; 7. Feed pipe; 8. Discharge pipe; 9. Material blocking screen; 10. Heating shell; 11. Thermal insulation layer; 12. Air inlet pipe; 13. Air outlet pipe; 14. Material lifting plate; 15. Gear ring; 16. Drive motor; 17. Drive gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0025] Embodiments of this utility model:

[0026] like Figures 1-6 As shown, this utility model provides a calcination apparatus for preparing lithium carbonate, including an ash collection cylinder 4 and support seats 2 symmetrically arranged on a support 1. A calcination furnace 3 is arranged between the two support seats 2. A feed pipe 7 and a discharge pipe 8 are respectively arranged on the two support seats 2. A gear ring 15 is sleeved on the calcination furnace 3. A drive device that cooperates with the gear ring 15 is arranged on the support. The drive device includes a drive motor 16. One end of the output shaft of the drive motor 16 is connected to a drive gear 17. The drive gear 17 meshes with the gear ring 15.

[0027] like Figures 1-5 As shown, the ash collection cylinder 4 is installed inside the calcining furnace 3. Multiple ash inlet mechanisms 5 are installed on the ash collection cylinder 4. Multiple connecting rods are installed between the ash collection cylinder 4 and the inner wall of the calcining furnace 3. One end of the ash collection cylinder 4 is connected to the ash discharge pipe 6, which can discharge the dust particles in the ash collection cylinder 4 through the ash discharge pipe 6.

[0028] like Figures 1-6As shown, the ash inlet mechanism 5 includes an external ash inlet pipe 51 and multiple internal ash inlet pipes 52, as well as connecting bolts 53 and connecting nuts 54. Both the external ash inlet pipe 51 and the multiple internal ash inlet pipes 52 are designed as tapered pipe structures with gradually decreasing diameters. Through a screening effect, dust particles are intercepted within the ash collection cylinder 4. The external ash inlet pipe 51 includes multiple branch pipes 511, each branch pipe 511 being connected to a first connecting plate 512. The internal ash inlet pipes 52 include tapered pipes 521, each tapered pipe 521 being connected to a second connecting plate 522. Multiple internal ash inlet pipes 52 are provided inside the external ash inlet pipes 51. The first connecting plate 512 and the second connecting nut 54 are connected and fixed by connecting bolts 53 and connecting nuts 54. Multiple fixing bolts 55 are provided at the contact position between the first connecting plate 512 and the ash collection cylinder 4. The first connecting plate 512 and the ash collection cylinder 4 are connected and fixed by fixing bolts 55. Through the cooperation of the external ash inlet pipes 51 and multiple internal ash inlet pipes 52, a multi-stage conical pipe structure is formed, which can better intercept dust particles.

[0029] like Figures 2-6 As shown, a baffle screen 9 is installed inside the external ash inlet pipe 51, which can block the material and prevent it from clogging the ash inlet mechanism 5.

[0030] like Figures 1-6 As shown, a heating shell 10 is provided on the outside of the roasting furnace 3. A heat insulation layer 11 is provided on the inner wall of the heating shell 10. An air inlet pipe 12 and an air outlet pipe 13 are respectively provided on the heating shell 10 near both ends. High-temperature hot air is introduced into the heating shell 10 through the inlet pipe to provide heat for the roasting operation.

[0031] like Figures 1-2 As shown, the roasting furnace 3 is set at an inclination angle of 5-10°. This setting allows the material to move within the roasting furnace 3 due to gravity, making it easier to discharge.

[0032] like Figures 1-5 As shown, the inner wall of the roasting furnace 3 is provided with multiple evenly distributed material lifting plates 14. With this arrangement, when the roasting furnace 3 rotates, the material lifting plates 14 lift the material to a certain height and then drop it in a waterfall shape. This process disperses the originally accumulated material, greatly increases the contact area between the material and the high-temperature airflow of the roasting furnace 3, improves the heat transfer efficiency, and the dropped dust particles are more likely to come into contact with the ash collection cylinder 4, and then enter the ash collection cylinder 4 through the ash inlet mechanism 5 and be discharged.

[0033] Specifically, the material is introduced into the roasting furnace 3 through the feed pipe 7, and high-temperature hot air is introduced into the heating shell 10 through the air inlet pipe 12 to raise the temperature inside the roasting furnace 3 and carry out the roasting of the material. The dust particles generated during the roasting process fall onto the ash collection cylinder 4 and enter the ash collection cylinder 4 through the outer ash inlet pipe 51 and multiple inner ash inlet pipes 52 of the ash inlet mechanism 5. Then, they are discharged through the ash discharge pipe 6. The material after roasting is discharged through the discharge pipe 8.

Claims

1. A calcination apparatus for preparing lithium carbonate, characterized in that, include: A support base (2) is symmetrically arranged on the bracket (1), and a roasting furnace (3) is arranged between the two support bases (2). An ash collection cylinder (4) is installed inside a calcining furnace (3). The ash collection cylinder (4) is equipped with multiple ash inlet mechanisms (5), and one end of the ash collection cylinder (4) is connected to an ash discharge pipe (6). The two support bases (2) are respectively provided with a feed pipe (7) and a discharge pipe (8).

2. The calcination apparatus for preparing lithium carbonate according to claim 1, characterized in that: The ash inlet mechanism (5) includes an external ash inlet pipe (51) and multiple internal ash inlet pipes (52), as well as connecting bolts (53) and connecting nuts (54). The external ash inlet pipe (51) and multiple internal ash inlet pipes (52) are both set as tapered pipe structures. The external ash inlet pipe (51) includes multiple branch pipe bodies (511). Each branch pipe body (511) is connected to a first connecting plate (512). The internal ash inlet pipe (52) includes a tapered pipe body (521). The tapered pipe body (521) is connected to a second connecting plate (522). The multiple internal ash inlet pipes (52) are all located inside the external ash inlet pipe (51). The first connecting plate (512) and the second connecting nut (54) are connected and fixed by connecting bolts (53) and connecting nuts (54).

3. The calcination apparatus for preparing lithium carbonate according to claim 2, characterized in that: The external ash inlet pipe (51) is equipped with a baffle screen (9).

4. The calcination apparatus for preparing lithium carbonate according to claim 1, characterized in that: The roasting furnace (3) is provided with a heating shell (10) on the outside. The inner wall of the heating shell (10) is provided with a heat insulation layer (11), and an air inlet pipe (12) and an air outlet pipe (13) are respectively provided on the heating shell (10) near both ends.

5. The calcination apparatus for preparing lithium carbonate according to claim 1, characterized in that: The roasting furnace (3) is tilted, and the tilt angle of the roasting furnace (3) is 5-10°.

6. The calcination apparatus for preparing lithium carbonate according to claim 1, characterized in that: The inner wall of the roasting furnace (3) is provided with multiple uniformly distributed material lifting plates (14).

7. The calcination apparatus for preparing lithium carbonate according to claim 1, characterized in that: The roasting furnace (3) is fitted with a gear ring (15), and the support (1) is provided with a drive device that cooperates with the gear ring (15).

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