Device for producing lithium carbonate from brine

Abstract

The utility model relates to the technical field of lithium carbonate production, in particular to a device for producing lithium carbonate from brine, which comprises a tank body and a stirring device, an inclined screen is arranged in the tank body; the stirring device comprises a rotating shaft rotationally arranged in the tank body, a plurality of mounting rings linearly distributed on the rotating shaft, three first stirring rods distributed on the mounting rings in an annular array manner, first scraping plates arranged on the first stirring rods and slidably connected with the tank body, a connecting shaft coaxially arranged on the rotating shaft, and a mounting sleeve arranged on the connecting shaft; the second stirring rods are arranged on the mounting sleeve, the second scraping plates are arranged on the second stirring rods, and the driving assembly is arranged on the tank body; and the second scraping plate is in sliding connection with the tank body. According to the utility model, insoluble impurities in the brine can be pretreated, the heating uniformity in the process of separating lithium carbonate crystals from the brine can be improved, and the quality of produced lithium carbonate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium carbonate production technical field especially is concerned with a kind of lithium carbonate of brine production device. BACKGROUND

[0002] Brine production lithium carbonate is a process of extracting lithium element from salt lake brine and making lithium carbonate.The main role of brine production lithium carbonate is to extract lithium resources, and lithium carbonate is a basic compound in lithium chemical industry, which has multiple uses and can be widely used in medicine, battery and other fields.

[0003] Chinese patent with publication number CN213924062U discloses a device for extracting lithium carbonate from salt lake brine, which includes a drive assembly, a support plate, a bottom wall scraping assembly, a crystallization bin, a side wall scraping assembly, a fixed support frame, a support piece, a base plate, and a gear tooth. The support piece is provided on the base plate, and the support plate is provided on the base plate. The drive assembly is provided on the support plate. The crystallization bin is rotatably provided on the support piece. One end of the fixed support frame is provided on the support piece, and the other end of the fixed support frame is provided on the upper end of the crystallization bin. The bottom wall scraping assembly and the side wall scraping assembly are provided on the other end of the fixed support frame. The gear tooth is provided on the side wall of the crystallization bin and is close to the bottom wall. The gear tooth is engaged with the drive assembly.

[0004] However, the above technical solution has the following disadvantages: although the device can scrape the crystals adhering to the inner bottom wall of the crystallization bin, when the device directly heats and evaporates the brine, some insoluble impurities contained in the brine will mix in the lithium carbonate crystals, reducing the purity of the lithium carbonate crystals. At the same time, the heating effect of the device on the brine is poor, affecting the quality of the evaporation and crystallization of the brine. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the problems in the background art and provides a device for producing lithium carbonate from brine, which can not only pretreat insoluble impurities in the brine but also improve the uniformity of heating during the process of precipitating lithium carbonate crystals from the brine, ensuring the quality of the produced lithium carbonate.

[0006] The technical solution of the utility model provides a device for producing lithium carbonate from brine, which includes a tank body and a stirring device. The inside of the tank body is provided with an inclined screen. The stirring device includes a rotating shaft provided inside the tank body, a plurality of mounting rings linearly distributed on the rotating shaft, three first stirring rods arranged in a ring array on the mounting rings, a first scraping plate provided on the first stirring rods and slidingly connected with the tank body, a connecting shaft coaxially provided on the rotating shaft, a mounting sleeve provided on the connecting shaft, a plurality of second stirring rods provided on the mounting sleeve, a second scraping plate provided on the second stirring rods, and a drive assembly provided on the tank body. The second scraping plate is slidingly connected with the tank body.

[0007] Preferably, the tank body is provided with a liquid inlet pipe and a residue discharge pipe, the liquid inlet pipe and the residue discharge pipe are arranged at the top and the bottom of the screen, respectively, the liquid inlet pipe is provided with a first control valve, and the residue discharge pipe is threadedly connected with a sealing sleeve.

[0008] Preferably, the inside of the tank body is provided with a heat conduction plate, a cavity is arranged between the heat conduction plate and the tank body, and a heating pipe is arranged in the cavity.

[0009] Preferably, the second scraping plate is provided with a protruding portion, the protruding portion and the first scraping plate are in close contact with each other and are slidably connected with the tank body.

[0010] Preferably, the driving assembly comprises a motor arranged on the tank body, a first gear in driving connection with the motor, and a second gear coaxially arranged on the rotating shaft; the first gear and the second gear are in meshing connection.

[0011] Preferably, the rotating shaft is coaxially provided with two limiting rings arranged in an up-down manner, and the limiting rings are slidably connected with the tank body.

[0012] Preferably, the tank body is provided with an exhaust pipe and a discharge pipe, and the discharge pipe is provided with a second control valve.

[0013] Preferably, a base is arranged below the discharge pipe, a collecting box is arranged above the base, a fan is arranged in the collecting box, and a dustproof net is arranged on both sides of the fan.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] 1、The screen and the residue discharge pipe arranged in the utility model can filter the insoluble impurities contained in the brine, avoid affecting the purity of the lithium carbonate crystals precipitated, and make the brine be heated fully and uniformly through the stirring device arranged, accelerate the extraction of lithium carbonate, and the first scraping plate and the second scraping plate can scrape the side surface of the tank body and the inclined surface at the bottom, so that the lithium carbonate crystals precipitated are not easily collected due to the adhesion to the inner wall.

[0016] 2、The fan arranged in the utility model can perform cold air action on the lithium carbonate crystals discharged, part of the water remaining on the surface of the crystals is taken away through the air, so that the lithium carbonate crystals are dried more quickly, and the caking phenomenon is prevented, and the production quality of the lithium carbonate is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is an inside structure schematic view of the tank body of the utility model;

[0019] Figure 3Part structure schematic view of the stirring device of the utility model.

[0020] Figure 4 Structure sectional view of the utility model embodiment.

[0021] Reference signs: 1, tank body;2, liquid inlet pipe;3, first control valve;4, residue discharge pipe;5, sealing sleeve;6, screen;7, cavity;8, heating pipe;9, heat conduction plate;10, rotating shaft;11, mounting ring;12, first stirring rod;13, first scraping plate;14, connecting shaft;15, mounting sleeve;16, second stirring rod;17, second scraping plate;18, protruding portion;19, motor;20, first gear;21, second gear;22, limiting ring;23, exhaust pipe;24, discharge pipe;25, second control valve;26, base;27, collection box;28, dust screen;29, fan. Specific implementation

[0022] Example one

[0023] As Figures 1-4 shown, the device for producing lithium carbonate from brine of the embodiment includes a tank body 1 and a stirring device;The tank body 1 is provided with a liquid inlet pipe 2 and a residue discharge pipe 4, the liquid inlet pipe 2 and the residue discharge pipe 4 are arranged at the top and bottom of the screen 6 respectively, the liquid inlet pipe 2 is provided with a first control valve 3, the residue discharge pipe 4 is threadedly connected with a sealing sleeve 5, the inside of the tank body 1 is provided with an inclined screen 6, the liquid inlet pipe 2 and the first control valve 3 can be arranged to control the brine into the inside of the tank body 1, when the brine falls on the screen 6, the insoluble impurities contained in the brine cannot pass through the screen 6 and roll to the bottom along the screen 6, the impurities can be taken out of the tank body 1 by opening the sealing sleeve 5, so as to realize the pretreatment of the brine.

[0024] As Figure 2 and Figure 3 shown, the stirring device includes a rotating shaft 10 rotatably arranged in the inside of the tank body 1, a plurality of mounting rings 11 linearly arranged on the rotating shaft 10, three first stirring rods 12 arranged in an annular array on the mounting rings 11, first scraping plates 13 arranged on the first stirring rods 12 and slidably connected with the tank body 1, a connecting shaft 14 coaxially arranged on the rotating shaft 10, a mounting sleeve 15 arranged on the connecting shaft 14, a plurality of second stirring rods 16 arranged on the mounting sleeve 15, second scraping plates 17 arranged on the second stirring rods 16, and a driving assembly arranged on the tank body 1;The second scraping plates 17 are slidably connected with the tank body 1, the second scraping plates 17 are provided with protruding portions 18, the protruding portions 18 and the first scraping plates 13 are mutually adhered and combined with the tank body 1, the protruding portions 18 can fill the gap between the first scraping plates 13 and the second scraping plates 17, so as to avoid the existence of the gap which is not scraped.

[0025] The driving assembly comprises a motor 19 arranged on the tank body 1, a first gear 20 in driving connection with the motor 19, and a second gear 21 coaxially arranged on the rotating shaft 10; the first gear 20 and the second gear 21 are in meshing connection, two limiting rings 22 distributed above and below are coaxially arranged on the rotating shaft 10, the limiting rings 22 are in sliding connection with the tank body 1, the limiting rings 22 are used for limiting the position of the rotating shaft 10 in the tank body 1, a heat-conducting plate 9 is arranged in the tank body 1, a cavity 7 is arranged between the heat-conducting plate 9 and the tank body 1, and a heating pipe 8 is arranged in the cavity 7.

[0026] In the embodiment, when the filtered brine passes through the screen 6, the heating pipe 8 generates heat, and the temperature in the tank body 1 is increased under the heat conduction of the heat-conducting plate 9 to heat and evaporate the brine; meanwhile, the motor 19 is started to drive the first gear 20 to rotate, the first gear 20 and the second gear 21 are in meshing transmission, the second gear 21 drives the rotating shaft 10 to rotate together with the connecting shaft 14, and then the plurality of first stirring rods 12 and the second stirring rods 16 are driven to rotate, so that the brine rotates under the stirring action, the brine is heated sufficiently and uniformly, the extraction of lithium carbonate is accelerated, and the lithium carbonate is scraped from the side surface and the inclined bottom surface of the tank body 1 by the first scraping plate 13 and the second scraping plate 17, so that the lithium carbonate crystals are not easily collected due to adhesion to the inner wall, and the device has good practicability.

[0027] Embodiment two

[0028] As shown in Figure 1 and Figure 4 , the device for producing lithium carbonate from brine in the embodiment is provided, compared with the first embodiment, the tank body 1 is provided with an exhaust pipe 23 and a discharge pipe 24, the discharge pipe 24 is provided with a second control valve 25, the bottom of the discharge pipe 24 is provided with a base 26, the top of the base 26 is provided with a collection box 27, the inside of the collection box 27 is provided with a fan 29, and the two sides of the fan 29 are provided with dustproof nets 28, which are used for isolating dust.

[0029] In the embodiment, the exhaust pipe 23 is used to ensure the stability of the air pressure when the tank body 1 is heated, the discharge pipe 24 and the second control valve 25 are used to discharge the precipitated lithium carbonate crystals from the tank body 1 and transport them into the collection box 27 below, the fan 29 cools the lithium carbonate crystals during the falling process, part of the water on the surface of the crystals is taken away by air, so that the lithium carbonate crystals are dried faster, and the caking phenomenon is prevented, so as to ensure the production quality of the lithium carbonate.

[0030] The embodiment of the utility model has been explained in detail in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. An apparatus for producing lithium carbonate from brine, characterized by, The utility model relates to a kind of slurry concentration and separation device, including: Tank (1), inside is provided with obliquely placed screen (6); Stirring device, including rotation setting in tank (1) interior rotating shaft (10), multiple linear distribution is installed ring (11) on rotating shaft (10), three annular array distribution is first stirring rod (12) on installed ring (11), first scraping plate (13) is set on first stirring rod (12) and and tank (1) sliding connection, coaxially setting connecting shaft (14) on rotating shaft (10), setting mounting sleeve (15) on connecting shaft (14), multiple second stirring rod (16) are set on mounting sleeve (15), second scraping plate (17) is set on second stirring rod (16), and drive assembly is set on tank (1);Second scraping plate (17) and tank (1) sliding connection.

2. A device for producing lithium carbonate from brine according to claim 1, characterized in that, Tank (1) is provided with liquid inlet pipe (2) and residue discharge pipe (4), and liquid inlet pipe (2) and residue discharge pipe (4) are respectively set at the top and bottom of screen (6), first control valve (3) is set on liquid inlet pipe (2), and sealing sleeve (5) is threadedly connected on residue discharge pipe (4).

3. The apparatus for producing lithium carbonate from brine as claimed in claim 1, wherein, The inside of tank (1) is provided with a heat conducting plate (9), and a cavity (7) is provided between the heat conducting plate (9) and the tank (1). The cavity (7) is provided with a heating pipe (8) inside.

4. The apparatus for producing lithium carbonate from brine as claimed in claim 1, wherein, The second scraping plate (17) is provided with a protruding part (18), which is in close contact with the first scraping plate (13) and is in sliding connection with the tank (1).

5. The apparatus for producing lithium carbonate from brine as claimed in claim 1, wherein, The drive assembly includes a motor (19) provided on the tank (1), a first gear (20) drivingly connected to the motor (19), and a second gear (21) coaxially provided on the rotating shaft (10). The first gear (20) and the second gear (21) are in meshing connection.

6. A device for producing lithium carbonate from brine according to claim 5, characterized in that, The rotating shaft (10) is coaxially provided with two limiting rings (22) distributed above and below, and the limiting rings (22) are in sliding connection with the tank (1).

7. The apparatus for producing lithium carbonate from brine as claimed in claim 1, wherein, The tank (1) is provided with an exhaust pipe (23) and a discharge pipe (24), and the discharge pipe (24) is provided with a second control valve (25).

8. A device for producing lithium carbonate from brine according to claim 7, characterized in that, A base (26) is provided below the discharge pipe (24), and a collection box (27) is provided above the base (26). The inside of the collection box (27) is provided with a fan (29), and dustproof nets (28) are provided on both sides of the fan (29).

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