Multi-stage sedimentation device for lithium salt production

Abstract

The utility model discloses a multistage sedimentation device for lithium salt production, which comprises an upper cylinder body (1) and a lower cylinder body (2) which are matched with each other, a sedimentation separation area (1a) is arranged in the upper cylinder body (1), a sediment collection area (2a) is arranged in the lower cylinder body (2), and baffles (5) in the upper cylinder body (1) divide the upper cylinder body (1) into five sedimentation areas (5a) with different heights from high to low. Feed liquid overflow between the adjacent settling areas (5a) is communicated, and the bottom of each settling area (5a) is connected with the lower barrel (2) through a sediment discharge port pipeline (6); a water washing and spraying device (8) is also arranged at the top of the upper barrel body (1); the main body of the sediment collecting area (2a) is in a cone shape, and the bottom of the sediment collecting area (2a) is connected with a sediment discharging pipeline (9) and a flushing discharging pipeline (10). The utility model has the advantages that the settling and filtering effects are improved, the product loss is reduced, the operation is simple and convenient, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sedimentation separation, and particularly relates to a multi-stage sedimentation device for lithium salt production. Background Art

[0002] During the production of lithium salts, generally, the filtrate after pressure filtration needs to be subjected to sedimentation separation treatment. The sedimentation tank can remove the particulate matter present in the filtrate through sedimentation, further purifying the filtrate. However, in this process, there are still a small amount of particulate matter entrained by the feed liquid, and at the same time, the sediment in the sedimentation tank is not easy to clean, causing pipeline blockage and long subsequent cleaning time. Therefore, it is necessary to improve this situation. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems of poor sedimentation effect of the existing filtrate, difficult cleaning of sediments, and time-consuming and laborious work. A multi-stage sedimentation device for lithium salt production is provided, which can not only improve the sedimentation and filtration effect, re-filter the feed liquid components, reduce product loss, but also quickly clean the sediments, prevent pipeline blockage, shorten the cleaning time, and improve work efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A multi-stage sedimentation device for lithium salt production includes a cooperating upper cylinder body and a lower cylinder body. A sedimentation separation area is provided inside the upper cylinder body, and a sediment collection area is provided inside the lower cylinder body. The bottom of the upper cylinder body is arranged directly opposite to the top of the lower cylinder body.

[0006] The upper part of the side wall of the upper cylinder body is connected with a material feed pipeline, and the lower part is connected with a material discharge pipeline. A group of uneven baffles are arranged inside the upper cylinder body. The baffles divide the upper cylinder body into five sedimentation areas with different heights from high to low. The feed liquid between adjacent sedimentation areas is overflow-connected. The bottom of each sedimentation area is connected with a sediment discharge port pipeline, and an electric valve is connected to the sediment discharge port pipeline.

[0007] A water flushing and spraying device is also provided at the top of the upper cylinder body. The water flushing and spraying device is arranged directly opposite to the sedimentation area for spraying and flushing the sedimentation area.

[0008] The lower cylinder body is connected with the sedimentation area of the upper cylinder body through the sediment discharge port pipeline. The main shape of the sediment collection area is a cone, and its bottom is respectively connected with a sediment discharge pipeline and a flushing discharge pipeline.

[0009] Furthermore, an end cover is connected to the top of the upper cylinder body. The water flushing and spraying device is arranged at the center of the top of the end cover, and the two are connected by a hose for opening, closing, and sealing the cylinder body.

[0010] Further, the water flushing and spraying device includes a connected inlet flushing pipeline and a nozzle. There are five nozzles, which are respectively arranged corresponding to different sedimentation areas.

[0011] Further, drain outlets are provided at the bottoms of the sedimentation areas. The drain outlets are funnel-shaped and are connected to the sediment discharge pipeline, so as to facilitate the discharge of sediments during flushing.

[0012] Further, a glass sight glass is provided on the side wall of the upper cylinder body. The glass sight glass is arranged facing the sedimentation area for observing the sedimentation height of the lithium salt.

[0013] Further, a group of guide plates are provided on the inner wall of the sediment collection area. The guide plates are arranged along the generatrix of the cone, and a diversion groove is formed between adjacent two guide plates.

[0014] Compared with the prior art, the advantages of the technical solution of the present utility model are specifically as follows:

[0015] (1) The multi-stage sedimentation device of the present utility model can not only be used for the production of lithium hydroxide, but also for the production of lithium carbonate, including but not limited to the above two lithium salts; the applicable range is wide;

[0016] (2) The device of the present utility model utilizes the overflow of the liquid level difference between the baffles for multi-stage sedimentation to remove particulate matters in the filtrate. The sediment collection area can collect sediments for re-filtering of the feed liquid after recombination, reducing product loss;

[0017] (3) The water flushing and spraying device equipped with the present utility model can quickly clean the device and re-enter the next multi-stage sedimentation cycle, realizing fast and continuous multi-stage sedimentation treatment, improving the treatment efficiency and effect;

[0018] (4) The device of the present utility model has a small floor area, is convenient to operate, improves work efficiency, and shortens the cleaning time. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the multi-stage sedimentation device for lithium salt production in Embodiment 1 of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the multi-stage sedimentation device for lithium salt production in Embodiment 2 of the present utility model. Detailed Embodiments Embodiment 1

[0021] To make the present utility model clearer and more understandable, the following further describes a multi-stage sedimentation device for lithium salt production of the present utility model in conjunction with the drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] See Figure 1, A multi-stage sedimentation device for lithium salt production, characterized in that:

[0023] It includes a cooperating upper cylinder body 1 and a lower cylinder body 2. A sedimentation and separation area 1a is provided inside the upper cylinder body 1, and a sediment collection area 2a is provided inside the lower cylinder body 2;

[0024] The upper part of the side wall of the upper cylinder body 1 is connected with a material feed pipeline 3, and the lower part is connected with a material discharge pipeline 4. A group of uneven baffles 5 are arranged inside the upper cylinder body 1. The baffles 5 divide the upper cylinder body into five sedimentation areas 5a with different heights from high to low. The liquid in the adjacent sedimentation areas 5a overflows and communicates. The bottom of each sedimentation area 5a is connected with a sediment discharge port pipeline 6, and an electric valve 7 is connected to the sediment discharge port pipeline 6;

[0025] The top of the upper cylinder body 1 is also provided with an end cover 11. A water flushing and spraying device 8 is arranged at the center of the top of the end cover 11, and the two are connected by a hose. The water flushing and spraying device 8 includes a connected inlet flushing pipeline 8a and a nozzle 8b. The nozzle 8b is provided with five, which are respectively arranged corresponding to different sedimentation areas 5a for spraying and flushing the sedimentation areas;

[0026] The lower cylinder body 2 is connected with the sedimentation area 5a of the upper cylinder body 1 through the sediment discharge port pipeline 6. The main shape of the sediment collection area 2a is a cone. A group of guide plates 14 are arranged on the inner wall of the sediment collection area 2a. The guide plates 14 are arranged along the generatrix of the cone. A diversion groove 14a is formed between two adjacent guide plates 14. The bottom of the sediment collection area 2a is respectively connected with a sediment discharge pipeline 9 and a flushing discharge pipeline 10 to improve the effect of discharging sediment and flushing water.

[0027] In this embodiment, the filtrate enters the first sedimentation area from the material feed pipeline 3 for primary sedimentation. When the liquid level is higher than the baffle of the adjacent sedimentation area, it overflows into the next sedimentation area. When it flows to the last sedimentation area, it flows out through the material discharge pipeline 4; when it is necessary to discharge sediment, open the regulating valve of the sediment discharge port pipeline 6 and the valve of the sediment discharge pipeline. The sediment and the filtrate remaining in the device are jointly discharged from the device through the sediment discharge pipe, and are pumped to the front-end treatment. After discharging, close the valve of the sediment discharge pipeline, open the water flushing and spraying device 8 for flushing the device, and at the same time open the valve of the flushing discharge pipeline to transport the sewage to the sewage treatment.

[0028] In this embodiment, for the convenience of installation, five pedestals can be fixed outside the bottom of the upper cylinder body to support the corresponding five sedimentation areas.

[0029] In this embodiment, the cylinder body is a circular cylinder body, and the cone is a conical body, but the shape is not limited and can be adjusted according to requirements. Embodiment 2

[0030] In this embodiment, on the basis of Embodiment 1, a drain port 12 is additionally provided at the bottom of the sedimentation area 5a. The drain port 12 is funnel-shaped and is connected to the sediment drain pipe 6. A glass sight glass 13 is provided on the side wall of the upper cylinder 1. The glass sight glass 13 is arranged facing the sedimentation area 5a for observing the sedimentation height of the lithium salt.

[0031] The device of the present utility model utilizes the overflow of the liquid level difference between the baffles for multi-stage sedimentation to remove particulate matter in the filtrate. The sediment collection area can collect sediments for reconstituting the feed liquid and then filtering again, reducing product loss. The equipped water flushing and spraying device can quickly clean the device and re-enter the next multi-stage sedimentation cycle, realizing fast and continuous multi-stage sedimentation treatment. At the same time, the device has a small floor area and is convenient to operate.

[0032] In addition to the above embodiments, the present utility model can also have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A multi-stage sedimentation device for lithium salt production, characterized in that: It comprises an upper cylinder (1) and a lower cylinder (2) which cooperate with each other, the upper cylinder (1) is provided with a sedimentation separation area (1a), the lower cylinder (2) is provided with a sediment collection area (2a), and the bottom of the upper cylinder (1) is arranged opposite to the top of the lower cylinder (2); The upper part of the side wall of the upper cylinder (1) is connected to a material feed pipe (3), and the lower part is connected to a material discharge pipe (4). A group of uneven baffles (5) are arranged inside the upper cylinder (1). The baffles (5) divide the upper cylinder (1) into five sedimentation zones (5a) of different heights from high to low. The material liquid overflows between adjacent sedimentation zones (5a). The bottom of each sedimentation zone (5a) is connected to a sediment discharge pipe (6), and the sediment discharge pipe (6) is connected to an electric valve (7); A water flushing spray device (8) is also provided on the top of the upper cylinder (1), and the water flushing spray device (8) is arranged facing the sedimentation area (5a); The lower cylinder (2) is connected to the settling area (5a) of the upper cylinder (1) via a sediment discharge pipe (6); the main body of the sediment collection area (2a) is in the shape of a cone, and its bottom is respectively connected to a sediment discharge pipe (9) and a flushing discharge pipe (10).

2. The multi-stage sedimentation device for lithium salt production according to claim 1, characterized in that: The top of the upper cylinder (1) is connected to an end cover (11), and a water flushing spray device (8) is arranged at the top center of the end cover (11), and the two are connected by a hose.

3. The multi-stage sedimentation device for lithium salt production according to claim 1 or 2, characterized in that: The water flushing spray device (8) comprises a connected water inlet flushing pipe (8a) and a nozzle (8b), and the nozzle (8b) is provided in five forms, which are respectively provided in correspondence with different settling areas (5a).

4. The multi-stage sedimentation device for lithium salt production according to claim 1 or 2, characterized in that: The bottom of each of the sedimentation areas (5a) is provided with a discharge port (12), which is funnel-shaped and connected to a sediment discharge pipe (6).

5. The multi-stage sedimentation device for lithium salt production according to claim 1 or 2, characterized in that: A glass sight glass (13) is provided on the side wall of the upper cylinder (1), and the glass sight glass (13) is arranged facing the sedimentation area (5a).

6. The multi-stage sedimentation device for lithium salt production according to claim 1 or 2, characterized in that: A group of guide plates (14) are provided on the inner wall of the sediment collection area (2a); the guide plates (14) are arranged along the generatrix of the cone, and a guide groove (14a) is formed between two adjacent guide plates (14).

Images