Lithium carbonate dissolving system

Abstract

The utility model relates to the technical field of lithium carbonate dissolving, in particular to a lithium carbonate dissolving system which comprises a lithium carbonate mixed liquid supply device, a gas supply device and a micro-nano bubble generator, the liquid inlet end and the gas inlet end of the micro-nano bubble generator are connected with the liquid supply end of the lithium carbonate mixed liquid supply device and the gas supply end of the gas supply device respectively, and the micro-nano bubble generator is used for enabling mixed liquid and gas entering the micro-nano bubble generator to form a micro-nano bubble solution in the working state of the micro-nano bubble generator; a carbon dioxide supply device for supplying carbon dioxide; a bubble liquid inlet end and a carbon dioxide inlet end of the reaction tank are respectively connected with a liquid outlet end of the micro-nano bubble generator and a gas supply end of the carbon dioxide supply device, so that lithium carbonate in the micro-nano bubble solution entering the reaction tank is subjected to carbonization reaction under the action of carbon dioxide to generate lithium bicarbonate; and dissolving in a micro-nano bubble solution. By applying the lithium carbonate dissolving system, the dissolving efficiency of lithium carbonate can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbonic acid lithium dissolving technical field, specifically related to a carbonic acid lithium dissolving system. BACKGROUND

[0002] Carbonic acid lithium is an important inorganic compound, at present, the common process flow steps mainly include dissolution, filtration and heating evaporation for the purification of carbonic acid lithium. For the dissolution link, the common method is to carbonize carbonic acid lithium into bicarbonate of lithium which is easier to dissolve by carbon dioxide, however, the method consumes large amount of carbon dioxide, resulting in rising cost, and the carbonization time is also long.

[0003] Therefore, there is an urgent need for a carbonic acid lithium dissolving system to effectively improve the dissolution efficiency of carbonic acid lithium. UTILITY MODEL CONTENT

[0004] The utility model discloses a carbonic acid lithium dissolving system to solve the problem of large amount of carbon dioxide consumption and long carbonization time in the prior art.

[0005] The technical scheme of the utility model is as follows:

[0006] A carbonic acid lithium dissolving system comprises a carbonic acid lithium mixed solution supply device for supplying a mixed solution of carbonic acid lithium and water;

[0007] A gas supply device for supplying gas;

[0008] A micro-nano bubble generator, whose liquid inlet end and gas inlet end are connected with the liquid supply end of the carbonic acid lithium mixed solution supply device and the gas supply end of the gas supply device respectively, is used to form a micro-nano bubble solution from the mixed solution and gas entering the inside of the micro-nano bubble generator under the working state of the micro-nano bubble generator;

[0009] A carbon dioxide supply device for supplying carbon dioxide;

[0010] A reaction tank, whose bubble liquid inlet end and carbon dioxide gas inlet end are connected with the liquid outlet end of the micro-nano bubble generator and the gas supply end of the carbon dioxide supply device respectively, is used to make the carbonic acid lithium in the micro-nano bubble solution entering the reaction tank carbonize to generate bicarbonate of lithium under the action of carbon dioxide, and dissolve in the micro-nano bubble solution.

[0011] Preferably, a liquid outlet pipe is connected to the liquid outlet end of the side wall of the reaction tank, and a transparent window and a liquid outlet pump are arranged on the liquid outlet pipe, so that the color of the solution in the liquid outlet pipe can be observed through the transparent window, and the solution can be transported to subsequent process treatment or recycled and dissolved by the lithium carbonate mixed solution supply device through the liquid outlet pump according to the color of the solution.

[0012] Preferably, at least one aeration head is arranged on the liquid outlet pipe.

[0013] Preferably, the lithium carbonate mixed solution supply device comprises a liquid storage tank, a liquid supply pipe, and a liquid supply pump installed on the liquid supply pipe, one end of the liquid supply pipe being in communication with the liquid storage tank, and the other end being in communication with the liquid inlet end of the micro-nano bubble generator.

[0014] Preferably, a filter is arranged on the liquid inlet pipe of the liquid storage tank.

[0015] Preferably, the gas supply device comprises a gas storage tank, a first gas supply pipe, and a first gas supply pump installed on the first gas supply pipe, one end of the first gas supply pipe being in communication with the gas storage tank, and the other end being in communication with the gas inlet end of the micro-nano bubble generator.

[0016] Preferably, the carbon dioxide supply device comprises a gas supply bottle, a second gas supply pipe, and a second gas supply pump installed on the second gas supply pipe, one end of the second gas supply pipe being in communication with the gas supply bottle, and the other end being in communication with the reaction tank.

[0017] Preferably, a first check valve is installed on the second gas supply pipe.

[0018] Preferably, the liquid outlet end of the micro-nano bubble generator and the bubble liquid inlet end of the reaction tank are in communication through a bubble liquid pipe, and a high-pressure delivery pump is arranged on the bubble liquid pipe.

[0019] Preferably, a second check valve is installed on the bubble liquid pipe.

[0020] According to the above technical solution, based on the lithium carbonate dissolution system, by passing the gas and the mixed solution of lithium carbonate and water into the micro-nano bubble generator, a micro-nano bubble solution is formed, and then the micro-nano bubble solution and carbon dioxide gas are further passed into the reaction tank, the rate of carbonation reaction can be effectively improved based on the gas-liquid mass transfer characteristics of micro-nano bubbles, so as to improve the dissolution efficiency of lithium carbonate and reduce the use amount of carbon dioxide. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the lithium carbonate dissolution system in a specific embodiment.

[0022] REFERENCE NUMERALS

[0023] 1, carbon dioxide supply device; 2, gas supply device; 3, lithium carbonate mixed solution supply device; 4, micro-nano bubble generator; 5, reaction tank; 6, transparent window; 7, first three-way valve; 8, aeration head; 9, filter; 10, high-pressure delivery pump; 11, second check valve; 12, first check valve; 13, second three-way valve; 14, first electromagnetic valve; 15, second electromagnetic valve. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model will be described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model embodiments, and are not used to limit the utility model embodiments.

[0025] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating relative importance, or implying the number of the indicated technical features. Therefore, unless otherwise specified, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features; the meaning of "multiple" is two or more. The term "includes" and any variation thereof means non-exclusive inclusion, possible existence or addition of one or more other features, units, components and / or combinations thereof.

[0026] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The utility model provides a kind of lithium carbonate dissolving system, as shown in figure Figure 1 It includes lithium carbonate mixed solution supply device 3 for supplying the mixed solution of lithium carbonate and water;

[0028] Gas supply device 2 for supplying gas;

[0029] Micro-nano bubble generator 4, its liquid inlet end and gas inlet end are connected with the liquid supply end of the lithium carbonate mixed solution supply device 3 and the gas supply end of the gas supply device 2 respectively, for forming micro-nano bubble solution in the working state of the micro-nano bubble generator 4, the mixed solution and gas entering its inside;

[0030] Carbon dioxide supply device 1 for supplying carbon dioxide;

[0031] A reaction tank 5, whose bubble liquid inlet end and carbon dioxide gas inlet end are connected with the liquid outlet end of the micro-nano bubble generator 4 and the gas supply end of the carbon dioxide supply device 1 respectively, is used for making the lithium carbonate in the micro-nano bubble solution entering the reaction tank 5 to generate lithium bicarbonate through carbonation reaction under the action of carbon dioxide and to be dissolved in the micro-nano bubble solution.

[0032] According to the above technical scheme, based on the lithium carbonate dissolving system, by passing the gas and the mixed liquid of carbon dioxide, lithium carbonate and water into the micro-nano bubble generator, the micro-nano bubble solution is formed, and then the micro-nano bubble solution and carbon dioxide gas are further passed into the reaction tank, the rate of carbonation reaction can be effectively improved based on the gas-liquid mass transfer characteristics of the micro-nano bubble, so as to improve the dissolving efficiency of lithium carbonate and reduce the use amount of carbon dioxide.

[0033] In the lithium carbonate dissolving system, preferably, the liquid outlet end on the side wall of the reaction tank 5 is connected with a liquid outlet pipeline, and a transparent window 6 and a liquid outlet pump are arranged on the liquid outlet pipeline, which are used for observing the color of the solution in the liquid outlet pipeline through the transparent window 6 and conveying the solution to subsequent process treatment or to the lithium carbonate mixed liquid supply device 3 for recycling dissolution according to the color of the solution. Specifically, when the color of the solution is observed to be white or milky white through the transparent window 6, it indicates that the lithium carbonate has not been completely carbonated into lithium bicarbonate, and when the color of the solution is observed to be clear through the transparent window 6, it indicates that the lithium carbonate has been completely carbonated into lithium bicarbonate, at which time a first three-way valve 7 can be arranged, one end of which is connected with the liquid outlet pipeline, one end is connected with the pipeline connecting the subsequent process, and the other end is connected with the recycling pipeline connecting the lithium carbonate mixed liquid supply device 3, so that the first three-way valve 7 can be selectively conducted according to the observed color of the solution. Preferably, a high-definition camera can be arranged directly above the transparent window 6, so that the color of the solution in the liquid outlet pipeline can be intelligently judged based on image algorithm, and the first three-way valve 7 can be selectively conducted. Figure 1

[0034] Further preferably, at least one aeration head 8 is arranged on the liquid outlet pipeline. Specifically, a plurality of aeration heads 8 can be arranged on the liquid outlet pipeline at intervals, so as to improve the dispersibility of the micro-nano bubble solution.

[0035] ​In the lithium carbonate dissolving system, in a specific embodiment, the lithium carbonate mixed solution supply device 3 comprises a liquid storage tank, a liquid supply pipeline and a liquid supply pump installed on the liquid supply pipeline, one end of the liquid supply pipeline is communicated with the liquid storage tank, the other end is communicated with the liquid inlet end of the micro-nano bubble generator 4, so that the micro-nano bubble generator 4 can be supplied with the mixed solution with a set flow rate and flow rate according to actual needs. More specifically, a second electromagnetic valve 15 is also arranged on the liquid supply pipeline for conduction or closing according to the liquid supply needs. The lithium carbonate mixed solution supply device 3 further comprises a circulating liquid storage tank for storing the solution from the circulating pipeline and conveying the solution in the circulating liquid storage tank to the micro-nano bubble generator 4 for circulating treatment according to needs. Of course, the solution can also be directly conveyed to the micro-nano bubble generator 4 for circulating treatment through the circulating pipeline.

[0036] Preferably, a filter 9 is arranged on the liquid inlet pipeline of the liquid storage tank for filtering out impurities in the mixed solution. Specifically, the filter 9 can be, for example, a filter screen.

[0037] In another specific embodiment, the gas supply device 2 comprises a gas storage tank, a first gas supply pipeline and a first gas supply pump installed on the first gas supply pipeline, one end of the first gas supply pipeline is communicated with the gas storage tank, the other end is communicated with the gas inlet end of the micro-nano bubble generator 4, so that the micro-nano bubble generator 4 can be supplied with the gas with a set flow rate, flow rate and pressure according to actual needs. More specifically, a first electromagnetic valve 14 is also arranged on the first gas supply pipeline for conduction or closing according to the gas supply needs. The gas can be air and carbon dioxide gas, preferably carbon dioxide gas, so as to further improve the dissolution rate of lithium carbonate.

[0038] In another specific embodiment, the carbon dioxide supply device 1 comprises a gas supply bottle, a second gas supply pipeline and a second gas supply pump installed on the second gas supply pipeline, one end of the second gas supply pipeline is communicated with the gas supply bottle, the other end is communicated with the reaction tank 5, so that the reaction tank 5 can be supplied with carbon dioxide with a set flow rate and flow rate according to actual needs.

[0039] Preferably, as shown in the figure, a first check valve 12 is installed on the second gas supply pipeline for preventing material backflow. Figure 1

[0040] In another specific embodiment, the liquid outlet end of the micro-nano bubble generator 4 and the bubble liquid inlet end of the reaction tank 5 are communicated through a bubble liquid pipeline, a high-pressure delivery pump 10 is arranged on the bubble liquid pipeline, so as to deliver the micro-nano bubble solution to the reaction tank 5. A second check valve 11 is installed on the bubble liquid pipeline for preventing material backflow.​

[0041] In the lithium carbonate dissolving system, preferably, the top of the reaction tank 5 is connected with a gas recovery pipeline, the output end of the gas recovery pipeline is communicated with the gas storage tank of the gas supply device 2, and the carbon dioxide gas which is not completely carbonated is reused.

[0042] The utility model will be described in detail through examples below, but the protection scope of the utility model is not limited to this.

[0043] Example 1

[0044] The lithium carbonate dissolving system shown in the figure is adopted, and specifically, the lithium carbonate dissolving system comprises: Figure 1

[0045] The lithium carbonate mixed solution supply device 3 is used for supplying the mixed solution of lithium carbonate and water.

[0046] The gas supply device 2 is used for supplying gas.

[0047] The micro-nano bubble generator 4 is connected with the liquid supply end of the lithium carbonate mixed solution supply device 3 and the gas supply end of the gas supply device 2 respectively, is used for forming the micro-nano bubble solution of the mixed solution and gas entering the inside under the working state of the micro-nano bubble generator 4.

[0048] The carbon dioxide supply device 1 is used for supplying carbon dioxide.

[0049] The reaction tank 5 is connected with the liquid outlet end of the micro-nano bubble generator 4 and the gas supply end of the carbon dioxide supply device 1 respectively, is used for making the lithium carbonate in the micro-nano bubble solution entering the reaction tank 5 to generate lithium bicarbonate by carbonation under the action of carbon dioxide and to be dissolved in the micro-nano bubble solution.

[0050] ​Specifically, the lithium carbonate mixed solution supply device 3 comprises a storage tank, a liquid supply pipeline and a liquid supply pump installed on the liquid supply pipeline, one end of the liquid supply pipeline is communicated with the storage tank, and the other end is communicated with a liquid inlet end of the micro-nano bubble generator 4; a second electromagnetic valve 15 is further arranged on the liquid supply pipeline; a filter 9 is arranged on a liquid inlet pipeline of the storage tank; the gas supply device 2 comprises a gas storage tank, a first gas supply pipeline and a first gas supply pump installed on the first gas supply pipeline, one end of the first gas supply pipeline is communicated with the gas storage tank, and the other end is communicated with a gas inlet end of the micro-nano bubble generator 4; a first electromagnetic valve 14 is further arranged on the first gas supply pipeline; the carbon dioxide supply device 1 comprises a gas supply bottle, a second gas supply pipeline and a second gas supply pump installed on the second gas supply pipeline, one end of the second gas supply pipeline is communicated with the gas supply bottle, and the other end is communicated with the reaction tank 5 through a second three-way valve 13; a first check valve 12 is installed on the second gas supply pipeline; a bubble liquid pipeline is communicated between a liquid outlet end of the micro-nano bubble generator 4 and a bubble liquid inlet end of the reaction tank 5, and a high-pressure delivery pump 10 is arranged on the bubble liquid pipeline; a second check valve 11 is installed on the bubble liquid pipeline; the bubble liquid pipeline is communicated with the bubble liquid inlet end of the reaction tank 5 through the second three-way valve 13.

[0051] In actual application, first, the first electromagnetic valve 14 and the second electromagnetic valve 15 are opened, and the gas and the mixed solution are delivered into the micro-nano bubble generator 4 through the gas supply device 2 and the lithium carbonate mixed solution supply device 3, then the micro-nano bubble generator 4 forms a micro-nano bubble solution in a working state, the bubble liquid passage of the second three-way valve 13 is opened, and the micro-nano bubble solution is delivered into the reaction tank 5 through the high-pressure delivery pump 10, then after the micro-nano bubble solution is delivered into the reaction tank 5, the carbon dioxide passage of the second three-way valve 13 is opened, and the carbon dioxide is delivered into the reaction tank 5, so that the lithium carbonate in the micro-nano bubble solution entering the reaction tank 5 reacts with the carbon dioxide to generate lithium bicarbonate and is dissolved in the micro-nano bubble solution.

[0052] Compared with the scheme of directly carbonizing lithium carbonate by carbon dioxide in the prior art, the lithium carbonate dissolving system can effectively improve the dissolving efficiency of lithium carbonate and reduce the use amount of carbon dioxide.

[0053] Example 2

[0054] With reference to the embodiment 1, the difference is that the liquid outlet pipe is connected to the liquid outlet end on the side wall of the reaction tank 5, the transparent window 6 and the liquid outlet pump are arranged on the liquid outlet pipe, the solution color in the liquid outlet pipe is observed through the transparent window 6, and the solution is transported to the subsequent process treatment or the lithium carbonate mixed solution supply device 3 for recycling dissolution through the liquid outlet pump according to the solution color; at least one aeration head 8 is arranged on the liquid outlet pipe.

[0055] In actual application, when the color of the solution observed through the transparent window 6 is white, it indicates that the lithium carbonate has not been completely carbonated into lithium bicarbonate, and the part of the solution is transported to the lithium carbonate mixed solution supply device 3 for recycling dissolution through the liquid outlet pump; when the color of the solution observed through the transparent window 6 is clear, it indicates that the lithium carbonate has been completely carbonated into lithium bicarbonate, and the solution is transported to the subsequent process treatment through the liquid outlet pump.

[0056] Compared with the scheme in the embodiment 1, the lithium carbonate dissolution system can timely transport the lithium carbonate in the reaction tank to the subsequent process treatment when the carbonation of the lithium carbonate in the reaction tank is completed, and can effectively avoid that the lithium carbonate in the reaction tank is transported to the subsequent process treatment before being completely carbonated into lithium bicarbonate.

[0057] The lithium carbonate dissolution system provided by the utility model can pass the gas and the mixed solution of lithium carbonate and water into the micro-nano bubble generator to form a micro-nano bubble solution, and then pass the micro-nano bubble solution and carbon dioxide gas into the reaction tank, so that the rate of carbonation reaction can be effectively improved based on the gas-liquid mass transfer characteristics of the micro-nano bubbles, the dissolution efficiency of the lithium carbonate is improved, and the use amount of carbon dioxide is reduced.

[0058] The above describes the preferred embodiments of the utility model, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical scheme of the utility model can be variously simply modified, and in order to avoid unnecessary repetition, the utility model will not be described again for various possible combination modes. However, these simple modifications and combinations should also be regarded as the disclosed contents of the utility model, and all belong to the protection range of the utility model.

Claims

1. A lithium carbonate dissolution system, characterized by, The lithium carbonate dissolving system comprises: a lithium carbonate mixed solution supply device (3) for supplying a mixed solution of lithium carbonate and water; a gas supply device (2) for supplying gas; a micro-nano bubble generator (4) having a liquid inlet end and a gas inlet end connected to a liquid supply end of the lithium carbonate mixed solution supply device (3) and a gas supply end of the gas supply device (2) respectively, for forming micro-nano bubble solution from the mixed solution and the gas entering the micro-nano bubble generator (4) under the working condition of the micro-nano bubble generator (4); a carbon dioxide supply device (1) for supplying carbon dioxide; a reaction tank (5) having a bubble solution inlet end and a carbon dioxide gas inlet end connected to a liquid outlet end of the micro-nano bubble generator (4) and a gas supply end of the carbon dioxide supply device (1) respectively, for allowing lithium carbonate in the micro-nano bubble solution entering the reaction tank (5) to react with carbon dioxide to generate lithium bicarbonate and dissolve in the micro-nano bubble solution.

2. The lithium carbonate dissolution system of claim 1, wherein, The liquid outlet end of the side wall of the reaction tank (5) is connected to a liquid outlet pipeline, and a transparent window (6) and a liquid outlet pump are arranged on the liquid outlet pipeline, for observing the color of the solution in the liquid outlet pipeline through the transparent window (6) and transporting the solution to subsequent process treatment or the lithium carbonate mixed solution supply device (3) for recycling dissolution according to the color of the solution through the liquid outlet pump.

3. The lithium carbonate dissolution system of claim 2, wherein, At least one aeration head (8) is arranged on the liquid outlet pipeline.

4. The lithium carbonate dissolution system of claim 1, wherein, The lithium carbonate mixed solution supply device (3) comprises a liquid storage tank, a liquid supply pipeline and a liquid supply pump installed on the liquid supply pipeline, one end of the liquid supply pipeline being in communication with the liquid storage tank, and the other end being in communication with the liquid inlet end of the micro-nano bubble generator (4).

5. The lithium carbonate dissolution system of claim 4, wherein, A filter (9) is arranged on the liquid inlet pipeline of the liquid storage tank.

6. The lithium carbonate dissolution system of claim 1, wherein, The gas supply device (2) comprises a gas storage tank, a first gas supply pipeline and a first gas supply pump installed on the first gas supply pipeline, one end of the first gas supply pipeline being in communication with the gas storage tank, and the other end being in communication with the gas inlet end of the micro-nano bubble generator (4).

7. The lithium carbonate dissolution system of claim 1, wherein, The carbon dioxide supply device (1) comprises a gas supply bottle, a second gas supply pipeline and a second gas supply pump installed on the second gas supply pipeline, one end of the second gas supply pipeline being in communication with the gas supply bottle, and the other end being in communication with the reaction tank (5).

8. The lithium carbonate dissolution system of claim 7, wherein, A first check valve (12) is installed on the second gas supply pipeline.

9. The lithium carbonate dissolution system of claim 1, wherein, The liquid outlet end of the micro-nano bubble generator (4) and the bubble solution inlet end of the reaction tank (5) are communicated through a bubble solution pipeline, and a high-pressure delivery pump (10) is arranged on the bubble solution pipeline.

10. The lithium carbonate dissolution system of claim 9, wherein, A second check valve (11) is installed on the bubble solution pipeline.

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