Washing and dewatering equipment for lithium carbonate precipitate

Abstract

The utility model provides washing and dewatering equipment for lithium carbonate precipitates, which belongs to the technical field of washing equipment for lithium carbonate precipitates and is characterized in that a centrifugal barrel is arranged on a base, a stirrer is arranged in the centrifugal barrel, a centrifugal drum is arranged at the bottom of the centrifugal barrel, and a filter cloth bag with certain precision is integrated in the centrifugal drum; a first driving device is arranged on the base and is in driving connection with the centrifugal drum; an upper cover plate is arranged at the top of the centrifugal barrel, a feeding port, a water inlet / flushing port and an exhaust hole are formed in the upper cover plate, and the bottom of the centrifugal barrel is communicated with a liquid outlet. According to the utility model, stirring washing and centrifugal dewatering are combined, so that the volume is small, and washing and dewatering equipment does not need to be operated respectively at the same time; the washing effect on lithium carbonate is improved; the moisture of the washed material is reduced, so that the heat energy consumption in the drying process in the subsequent process is reduced; a pneumatic uncovering device is arranged, and a filter bag is arranged in the equipment, so that a worker can collect dehydrated lithium carbonate more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium carbonate precipitate washing equipment, in particular to a lithium carbonate precipitate washing and dehydration equipment which combines stirring washing and centrifugal dehydration. Background Art

[0002] Salt lake brine contains a large amount of suspended particles, colloids and other impurities. Lithium in salt lakes mainly exists in the form of lithium chloride, and there are also sodium chloride, potassium chloride, magnesium chloride, calcium chloride, boron and other substances. The general lithium extraction process on salt lakes includes pretreatment, adsorbent, reverse osmosis pre-concentration, nanofiltration salt separation, electrodialysis and evaporation system for high-fold concentration, lithium precipitation and other processes. Among them, the lithium precipitation system directly affects the purity of lithium carbonate extracted from lithium and the lithium yield of the overall system.

[0003] In the lithium carbonate production process of the lithium precipitation system, lithium carbonate has the characteristics of easy agglomeration and viscosity, so a certain amount of impurities exist in the lithium carbonate material, resulting in the difficulty and high cost of purifying the lithium carbonate product. Therefore, it is necessary to provide a washing method for efficiently purifying lithium carbonate precipitates.

[0004] The Chinese utility model patent with application number CN202322108196.3 discloses a lithium carbonate washing device, which can complete the washing of lithium carbonate. After washing, the lithium carbonate contains a large amount of water, which increases the heat energy consumption of subsequent drying and does not achieve energy-saving effect. In addition, the impurity content of the washed lithium carbonate is relatively high, and crude lithium carbonate is obtained. The Chinese utility model patent with application number CN202221143986.4 discloses a closed lithium carbonate washing and filtering device. After washing, the device controls the electric telescopic rod to shrink, thereby driving the filter screen to rise through the connecting rod, and the washing liquid in the raw material is drained under the action of gravity. This dehydration method is slightly worse than rapid centrifugal dehydration. Centrifugal dehydration can make the product have a lower water content.

[0005] In summary, the disadvantages of the existing technology are: most of the existing crude lithium carbonate washing equipment has separate washing and dehydration equipment, too many operating equipment, high investment cost and complicated operation; the existing washing centrifugal equipment has not summarized the best method for using the equipment, and the output can generally only reach crude lithium carbonate products. Utility Model Content

[0006] The utility model aims to provide a washing and dehydrating device for lithium carbonate precipitation to solve at least one technical problem existing in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a washing and dehydrating device for lithium carbonate precipitation, comprising:

[0009] A base; a centrifugal bucket is provided on the base; a stirrer is provided in the centrifugal bucket;

[0010] A centrifugal drum is provided at the bottom of the centrifugal barrel; a filter bag with a certain precision is integrated inside the centrifugal drum; a first driving device is provided on the base, and the first driving device is driven and connected to the centrifugal drum;

[0011] An upper cover plate is arranged on the top of the centrifugal bucket, and a feed inlet, a water inlet / flushing port and an exhaust hole are arranged on the upper cover plate; a liquid discharge port is connected to the bottom of the centrifugal bucket.

[0012] Furthermore, the stirrer includes a second driving device arranged on the upper cover plate, and the second driving device drives a stirring rod connected to the inside of the centrifugal bucket, and the stirring rod is provided with a stirring rod.

[0013] Furthermore, a support frame is provided at the bottom of the centrifugal barrel, and the centrifugal drum is fixed on the support frame; a through hole is provided on the base at a position corresponding to the support frame, and one end of the centrifugal drum extends out of the through hole and is driven and connected to the first driving device.

[0014] Furthermore, an explosion-proof lamp is provided on the top of the second driving device.

[0015] Furthermore, the upper cover plate is pivotally connected to the top of the outer shell of the centrifugal bucket.

[0016] Furthermore, a cover opening device is connected to the outer shell of the centrifugal barrel, and the cover opening device is pivotally connected to the upper cover plate.

[0017] Furthermore, the cover opening device includes a pneumatic telescopic rod having one end connected to the shell and the other end pivotally connected to the upper cover plate.

[0018] Furthermore, a protective cover is provided on the outside of the first driving device.

[0019] Furthermore, the second driving device is connected to a retractable supporting shaft, and the supporting shaft is connected to the stirring rod.

[0020] Furthermore, the support shaft is an electric telescopic rod.

[0021] The utility model has the following beneficial effects: it combines stirring washing and centrifugal dehydration, and stirring washing and centrifugal dehydration can complete washing and dehydration successively in the same cavity of the equipment; this equipment is smaller in size than the separate type, which reduces the equipment investment cost and avoids the simultaneous operation of washing and dehydration equipment; after the material enters the equipment, stirring can be turned on first for stirring washing, which improves the mixing effect of lithium carbonate and water, and thus improves the washing effect of lithium carbonate; after washing is completed, the centrifugal dehydration function is turned on to fully dehydrate the material, reduce the moisture in the washed material, and thus reduce the heat energy consumption of the drying process in the subsequent process; by providing a pneumatic opening device and a filter bag inside the equipment, the staff can collect the dehydrated lithium carbonate more conveniently. The best washing method is summarized using the above-mentioned lithium carbonate washing and dehydration integrated equipment, and the purity of washed lithium carbonate is 98%-99.7%, reaching the battery-grade lithium carbonate purity.

[0022] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a structural diagram of the washing and dehydration equipment for lithium carbonate precipitate described in an embodiment of the utility model.

[0025] Figure 2 This is a top view of the structure of the washing and dehydration equipment for lithium carbonate precipitates described in an embodiment of the utility model.

[0026] Figure 3 This is a schematic diagram of a three-stage countercurrent washing method for the washing and dehydration equipment for lithium carbonate precipitates described in an embodiment of the utility model.

[0027] Figure 4 This is a schematic diagram of a three-stage countercurrent circulation three-time pure water washing method for the washing and dehydration equipment of lithium carbonate precipitate described in an embodiment of the utility model.

[0028] Figure 5 This is a schematic diagram of a three-stage countercurrent circulation five-time pure water washing method for the washing and dehydration equipment of lithium carbonate precipitate described in an embodiment of the utility model.

[0029] Figure 6This is a schematic diagram of a three-stage countercurrent circulation five-time mixed water washing method for the washing and dehydration equipment of lithium carbonate precipitate described in an embodiment of the utility model.

[0030] Among them: 1-base; 2-centrifugal barrel; 3-centrifugal drum; 4-first driving device; 5-upper cover; 6-feeding port; 7-water inlet / flushing port; 8-exhaust hole; 9-drainage port; 10-second driving device; 11-stirring rod; 12-stirring rod; 13-support frame; 14-through hole; 15-explosion-proof lamp; 16-cover opening device; 17-pneumatic telescopic rod; 18-protective cover; 19-support shaft; 20-driving wheel; 21-transmission belt; 22-driving wheel; 23-filter cloth; 24-stirrer. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0032] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as generally understood by those skilled in the art to which the present invention belongs.

[0033] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with that in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0034] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or groups thereof.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0036] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of this specification, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present technology.

[0038] Unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0039] To facilitate the understanding of the present invention, the present invention is further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0040] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0041] Example 1

[0042] like Figures 1 to 6As shown, this embodiment provides a washing and dehydration device for lithium carbonate precipitate, comprising: a base 1; a centrifugal barrel 2 is provided on the base 1; a stirrer is provided in the centrifugal barrel 2; a centrifugal drum 3 is provided at the bottom of the centrifugal barrel 2; a filter cloth 23 with a certain precision is integrated inside the centrifugal drum 3; the filter cloth 23 covers the bottom and inner wall of the centrifugal barrel; a first driving device 4 is provided on the base 1, and the first driving device 4 is driven and connected to the centrifugal drum 3; an upper cover plate 5 is provided on the top of the centrifugal barrel 2, and a feed port 6, a water inlet / flushing port 7 and an exhaust hole 8 are provided on the upper cover plate 5; the bottom of the centrifugal barrel 2 is connected to a drain port 9.

[0043] The stirrer includes a second driving device 10 disposed on the upper cover plate 5, and the second driving device 10 drives a stirring rod 11 connected to the inside of the centrifugal bucket 2, and a stirring rod 12 is disposed on the stirring rod 11. A support frame 13 is disposed at the bottom of the centrifugal bucket 2, and the centrifugal drum 3 is fixedly disposed on the support frame 13; a through hole 14 is disposed on the base 1 at a position corresponding to the support frame 13, and one end of the centrifugal drum 3 extends out of the through hole 14 and is drivingly connected to the first driving device 4. The second driving device 10 may be a driving motor.

[0044] The upper cover plate 5 is provided with an explosion-proof lamp 15. The upper cover plate 5 is pivotally connected to the top of the outer shell of the centrifugal bucket 2. A cover opening device 16 is connected to the outer shell of the centrifugal bucket 2, and the cover opening device 16 is pivotally connected to the upper cover plate 5. Wherein, the cover opening device 16 includes a pneumatic telescopic rod 17 connected to the outer shell at one end and pivotally connected to the upper cover plate 5 at the other end. When the telescopic rod 17 is started to extend, the upper cover plate 5 is opened, and the pneumatic telescopic rod 17 is retracted, and the upper cover plate is closed. Wherein, a protective cover 18 is provided on the outside of the first driving device 4. The first driving device 4 can be a driving motor, and the driving end of the driving motor extends out of the bottom of the base to drive and connect the driving wheel 20, and the driving wheel 20 is connected to the driving wheel 22 of the centrifugal drum 3 through a transmission belt 21. The second driving device 10 is connected to a retractable support shaft 19, and the support shaft 19 is connected to the stirring rod 11. Wherein, the support shaft 19 can be an electric telescopic rod.

[0045] like Figure 1 and Figure 2As shown, when the lithium carbonate washing centrifugal device described in this embodiment is in use, the staff first opens the feed and water inlet valves, and injects the lithium carbonate liquid and water into the centrifugal barrel device through the feed port 6 and the pure water inlet / rinsing port 7 according to the mass ratio of the washing water volume to the filter cake of 8:1 to 2:1. At this time, the staff starts the agitator, and the drive motor of the agitator drives the support shaft 19 and the stirring rod 11 to rotate, and starts to fully mix and stir the lithium carbonate liquid and water of a certain concentration. This function can improve the mixing effect of lithium carbonate and water, and then improve the washing effect of lithium carbonate products. After the washing is completed, the agitator is turned off, the support shaft 19 of the agitator is retracted upward and moved to the top position of the device, and then the drive motor of the centrifugal drum 3 is turned on, and the device starts to centrifugally dehydrate, and the liquid passes through the filter cloth 23 on the inner wall of the device and discharges the device from the drain port 9. After the dehydration is completed, the drive motor of the centrifugal drum is turned off, and the cover plate 5 on the device is opened using the cover opening device 16, and the filter cloth 23 is taken out to collect lithium carbonate.

[0046] In this embodiment, the washing method of lithium carbonate precipitate using the above-mentioned washing and centrifugation integrated equipment comprises the following steps:

[0047] S1, adding a certain amount of sodium carbonate to the lithium-rich liquid phase material, performing aging treatment for a period of time, and performing solid-liquid separation on the aged liquid;

[0048] S2, using the above-mentioned integrated washing and centrifugal equipment, a three-stage countercurrent washing method is selected to stir, wash and centrifuge the lithium carbonate liquid for dehydration, the washing method is as follows Figure 3 As shown;

[0049] S3. Drying the washed lithium carbonate solution, and determining the washing purity and lithium yield of the lithium carbonate after acid dissolution and precipitation.

[0050] Wherein, in step S1, the aging operating conditions include: the amount of sodium carbonate added is 110% to 150% of the theoretical amount, the feeding rate is 8 to 15 mL / min, the stirring rate is 100 to 500 r / min, the reaction time is 40 to 100 min, and the reaction temperature is 85 to 95° C.; preferably, the amount of sodium carbonate added is 110-130% of the theoretical amount, the feeding rate is 12 to 15 mL / min, the stirring rate is 300 to 500 r / min, the reaction time is 60 to 80 min, and the reaction temperature is 90 to 92° C.

[0051] In step S2, the washing treatment conditions include: the temperature of the washing water is 85-95°C, and the mass ratio of the washing water to the filter cake is 6:1-15:1. Preferably, the temperature of the washing water is 90-92°C, and the mass ratio of the washing water to the filter cake is 8:1-12:1.

[0052] In step S2, the washing supplement water is pure water or mixed water, and the pure water washing method is as follows: Figure 4 and 5 As shown; the mixed water is a mixture of washing water and pure water, such as Figure 6 as shown in .

[0053] In step S2, the three-stage washing cycle is repeated 3 to 5 times. The three-stage washing cycle is repeated 3 times. Figure 4 As shown; the three-stage washing cycle is 5 times as shown Figure 5 and 6 shown.

[0054] In step S3, the treatment conditions of the acid-soluble precipitation are 2-12 mol / L hydrochloric acid, and the volume of the hydrochloric acid solution is 25 mL; preferably 2.5-5 mol / L hydrochloric acid.

[0055] In summary, the washing and dehydration equipment for lithium carbonate precipitates provided in this embodiment integrates washing and dehydration in a special design. Centrifugal dehydration can be completed after stirring. Stirring makes the washing effect better, and efficient centrifugal dehydration is performed after sufficient washing, avoiding the simultaneous operation of multiple devices and reducing washing costs. After the washing is completed, the device centrifugally discharges the washing liquid, and the lithium carbonate product contains less water. This equipment is suitable for washing lithium carbonate-rich liquid in a better way. The purity of washed lithium carbonate is 98%-99.7%, reaching the battery-grade purity of lithium carbonate, which proves that the equipment can complete the efficient impurity removal and dehydration functions of lithium carbonate-rich liquid.

[0056] Example 2

[0057] In this Example 2, another method for washing lithium carbonate precipitation using the equipment described in Example 1 is provided, and the ion concentrations of each lithium-rich solution are: lithium ion is 2.5 g / L, potassium ion is 0.96 g / L, sodium ion is 25.9 g / L, calcium ion is 0.074 g / L, magnesium ion is 0.074 g / L, boron ion is 1.18 g / L, sulfate ion is 0.57 g / L, and chloride ion is 167.58 g / L.

[0058] The washing supplementary water is pure water, and the three-stage countercurrent circulation 3-time washing method is selected, such as Figure 4 shown.

[0059] Weigh three portions of the specified mass of precipitate into a 200 mL beaker and label them as precipitate 1, precipitate 2, and precipitate 3. Add deionized water to precipitate 1 according to the specified water-to-solid ratio, place the beaker in a magnetic stirring water tank, start stirring, and time 15 minutes. After the timer is up, filter and retain the filtrate. Wash the residue with secondary water in the same way. Use the secondary water washing liquid of precipitate 1 for the primary water washing of precipitate 2, and so on. Figure 2Collect the final c water and detect the content of each ion in the water washing liquid, dissolve the precipitate with acid to detect the content of each ion in the precipitate, and calculate the recovery rate and purity of lithium carbonate precipitate.

[0060] In this Example 4, the washed lithium carbonate was dissolved using 2.5 mol / L hydrochloric acid, and the lithium carbonate ratio was measured to be 88.65-96.21%, and the lithium yield was 86.44-89.34%. In addition, the data of the three-stage countercurrent circulation three-time washing method fluctuated greatly.

[0061] Example 3

[0062] In this embodiment 3, another method for washing lithium carbonate precipitation using the equipment described in embodiment 1 is provided. Since the data fluctuation of the three-stage countercurrent circulation three-time washing method is large, the three-stage countercurrent circulation five-time washing method is selected, and the washing supplementary water is pure water, such as Figure 5 shown.

[0063] The concentration of each ion in each lithium-rich solution is the same as in Example 1. Weigh five portions of the specified mass of precipitate into a 200mL beaker and mark them as Precipitation 1, Precipitation 2, Precipitation 3, Precipitation 4, and Precipitation 5. Add deionized water to Precipitation 1 according to the specified water-to-solid ratio, place the beaker in a magnetic stirring water bath, start stirring and time for 15 minutes. After the timing is over, filter and retain the filtrate. Wash the residue with secondary water, and operate the same as above. Use the secondary water wash of Precipitation 1 for the primary water wash of Precipitation 2, and so on. Figure 3 Collect the final six streams of water, a, b, c, d, e, f & g (f and g mixed), and detect the content of each ion in the water wash, dissolve the precipitate with acid to detect the content of each ion in the precipitate, and calculate the recovery rate and purity of lithium carbonate precipitate.

[0064] In this embodiment, the washed lithium carbonate is dissolved using 2.5 mol / L hydrochloric acid, and the lithium carbonate ratio is measured to be 88.8-94.72%, and the lithium yield is 67.99-73.56%. In addition, the data of the three-stage countercurrent cycle 5-time washing method is relatively stable.

[0065] Example 4

[0066] In this embodiment 4, another method for washing lithium carbonate precipitate using the equipment described in embodiment 1 is provided, using a three-stage countercurrent cycle 5-time washing method, and the washing supplementary water is mixed water, such as Figure 6 shown.

[0067] The concentration of each ion in each lithium-rich solution is the same as in Implementation Example 1. Five portions of the specified mass of precipitate are weighed into a 200mL beaker and marked as Precipitation 1, Precipitation 2, Precipitation 3, Precipitation 4 and Precipitation 5. Deionized water is added to Precipitation 1 according to the specified water-to-solid ratio, the beaker is placed in a magnetic stirring water bath, stirring is turned on and the timing is 15 minutes. After the timing is over, filter and retain the filtrate, and perform secondary water washing on the filter residue, and the operation is the same as above. The secondary water washing liquid of Precipitation 1 is used for the primary water washing of Precipitation 2, and the mixed water of the tertiary water washing of Precipitation 1 and pure water is used as the secondary washing water and tertiary washing water of Precipitation 2, and so on. Figure 4 Collect the final six streams of water, namely a, b, mixed c, mixed d, mixed e, mixed f1 & mixed f2 (mixed f1 and mixed f2), and detect the content of each ion in the water wash, dissolve the precipitate with acid to detect the content of each ion in the precipitate, and calculate the recovery rate and purity of lithium carbonate precipitate.

[0068] In this embodiment, the washed lithium carbonate is dissolved using 2.5 mol / L hydrochloric acid, and the lithium carbonate ratio is measured to be 98.61-99.72%, and the lithium yield is 78.49-84.25%. In addition, the data of the three-stage countercurrent cycle 5-time washing method is relatively stable.

[0069] In summary, the washing and dehydration equipment for lithium carbonate precipitate described in the embodiment of the utility model aims at the problem that the existing washing and dehydration effects of crude lithium carbonate washing equipment are poor. The washing and dehydration are designed in one equipment cavity, and the stirring can be completed first and then the centrifugal dehydration; stirring makes the washing effect better, and efficient centrifugal dehydration is carried out after sufficient washing, avoiding the simultaneous operation of multiple equipments and reducing the washing cost; after the washing is completed, the device centrifugally discharges the washing liquid, and the lithium carbonate product has less water content, reducing the heat consumed by the lithium carbonate product in the next drying process; in addition, the output of the existing washing equipment can generally only reach crude lithium carbonate, the purity is not high, and the washing effect is not good. A washing method suitable for the washing and dehydration equipment of lithium carbonate precipitate is proposed for lithium carbonate rich lithium liquid. The purity of washed lithium carbonate is 98%-99.7%, reaching the purity of battery-grade lithium carbonate, which proves that the equipment can complete the efficient impurity removal and dehydration functions of lithium carbonate rich lithium liquid, and has great promotion significance.

[0070] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution disclosed in the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work should be included in the scope of protection of the utility model.

Claims

1. A washing and dehydration device for lithium carbonate precipitation, characterized in that: include: A base (1); a centrifugal bucket (2) is provided on the base (1); a stirrer is provided in the centrifugal bucket (2); A centrifugal drum (3) is provided at the bottom of the centrifugal barrel (2); a filter bag with a certain precision is integrated inside the centrifugal drum (3); a first driving device (4) is provided on the base (1), and the first driving device (4) is driven and connected to the centrifugal drum (3); The top of the centrifugal bucket (2) is provided with an upper cover plate (5), and the upper cover plate (5) is provided with a feed port (6), a water inlet / flushing port (7) and an exhaust hole (8); the bottom of the centrifugal bucket (2) is connected to a liquid discharge port (9).

2. The washing and dehydrating device for lithium carbonate precipitation according to claim 1, characterized in that: The stirrer comprises a second driving device (10) arranged on the upper cover plate (5), wherein the second driving device (10) drives a stirring rod (11) connected to the inside of the centrifugal bucket (2), and a stirring rod (12) is arranged on the stirring rod (11).

3. The washing and dehydrating equipment for lithium carbonate precipitation according to claim 1, characterized in that: A support frame (13) is provided at the bottom of the centrifugal barrel (2), and the centrifugal drum (3) is fixedly arranged on the support frame (13); a through hole (14) is provided on the base (1) at a position corresponding to the support frame (13), and one end of the centrifugal drum (3) extends out of the through hole (14) to be drivingly connected to the first driving device (4).

4. The washing and dehydrating device for lithium carbonate precipitation according to claim 2, characterized in that: An explosion-proof lamp (15) is provided on the top of the upper cover plate (5).

5. The washing and dehydrating equipment for lithium carbonate precipitation according to claim 1, characterized in that: The upper cover plate (5) is pivotally connected to the top of the outer shell of the centrifugal bucket (2).

6. The washing and dehydrating device for lithium carbonate precipitation according to claim 5, characterized in that: A cover opening device (16) is connected to the outer shell of the centrifugal barrel (2), and the cover opening device (16) is pivotally connected to the upper cover plate (5).

7. The washing and dehydrating device for lithium carbonate precipitation according to claim 6, characterized in that: The cover opening device (16) comprises a pneumatic telescopic rod (17) having one end connected to the housing and the other end pivotally connected to the upper cover plate (5).

8. The washing and dehydrating device for lithium carbonate precipitation according to claim 1, characterized in that: A protective cover (18) is provided outside the first driving device (4).

9. The washing and dehydrating device for lithium carbonate precipitation according to claim 2, characterized in that: The second driving device (10) is connected to a retractable support shaft (19), and the support shaft (19) is connected to the stirring rod (11).

10. The washing and dehydrating device for lithium carbonate precipitation according to claim 9, characterized in that: The support shaft (19) is an electric telescopic rod.

Images