CN207793370U - Extraction tank reinforced mixing chamber for extracting lithium from salt lake brine by box-type extraction method - Google Patents

Abstract

The utility model discloses an extraction tank intensified mixing chamber for extracting lithium from salt lake brine by a box-type extraction method, which comprises a tank body, a motor and a stirring shaft, wherein the top end of the tank body is provided with a false bottom, the tank body is internally provided with a false bottom, the false bottom is provided with a liquid inlet, a mixing chamber is formed between the false top and the false bottom, the upper part of the mixing chamber is provided with a liquid outlet, a false bottom chamber is formed between the false bottom and the tank body, the false bottom chamber is internally provided with a water phase inlet pipe and an organic phase inlet pipe, the motor is fixed on the false top, the stirring shaft passes through the upper end of the false top and is fixedly connected with a rotating shaft of the motor, the lower end of the stirring shaft is positioned in the mixing chamber and is connected with a self-suction turbine stirrer, the stirring shaft is also provided with a radial flow stirring paddle, the outer baffle plate is provided with flow passing holes which are staggered with each other. The utility model discloses the operation is stable, enables aqueous phase and organic phase intensive mixing, and the mixing efficiency is high, mixes effectually.

Description

An extraction tank enhanced mixing chamber for extracting lithium from salt lake brine by box extraction method

technical field

The utility model relates to an extraction tank mixing chamber, in particular to an extraction tank intensified mixing chamber used for extracting lithium from salt lake brine by a box-type extraction method.

Background technique

Lithium is the lightest metal in nature and has extremely strong chemical activity. Its metals and compounds are important strategic resources in the national economy. The application of lithium and its compounds in traditional industries, new materials and other fields continues to expand, and the global demand for lithium continues to grow, which promotes the continuous progress of lithium extraction technology. Lithium resources in salt lakes account for more than 69% of the industrial reserves of lithium resources in the world, and lithium resources in salt lake brines in my country account for 85% of industrial reserves of lithium resources; using solvent extraction technology to extract lithium from salt lake brines is a promising method for extracting lithium. Solvent extraction, also known as liquid-liquid extraction, is an effective method for separating, enriching, and extracting useful substances from a solution. It uses the different distribution of solutes between two immiscible liquid phases to achieve separation. and enrichment purposes. High-efficiency extraction equipment is of great significance to achieve a good extraction process. It is not only related to whether the extraction process can be realized, but also greatly affects the economic benefits of the extraction plant.

In the extraction equipment, the box-type extraction equipment has the advantages of low cost, simple operation, reliable use, and high efficiency. The extraction tank is an important device for extracting lithium from salt lake brine by box extraction method. It includes a mixing chamber and a clarification chamber. The mixing chamber is used to make the lithium-containing salt lake brine (water phase) and extractant (organic phase) fully Liquid-liquid mixing is carried out so that lithium migrates from the salt lake brine to the extractant to achieve the separation and extraction of lithium.

The mixing chamber of the existing extraction tank includes a circular tank body and a stirring device (stirrer) located in the tank body. When the stirrer stirs, the mixed phase in the tank body will generate a circular motion along the tank wall. , so that the aqueous phase and the organic phase cannot be fully mixed, reducing the extraction efficiency and extraction effect.

Utility model content

The utility model aims to solve the above-mentioned technical problems existing in the mixing chamber of the extraction tank in the prior art, and provides a simple structure, stable operation, convenient maintenance, which can fully mix the water phase and the organic phase, and has high mixing efficiency and good mixing effect. Good extraction tank enhanced mixing chamber for lithium extraction from salt lake brine by box extraction method.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model relates to an extraction tank intensified mixing chamber for extracting lithium from salt lake brine by the box-type extraction method, comprising a circular tank body, a motor and a stirring shaft, a false top is provided on the top of the tank body, and a The bottom is provided with a false bottom, the false bottom is provided with a liquid inlet, the space between the false top and the false bottom forms a mixing chamber, the upper part of the mixing chamber is provided with a liquid outlet, and the space between the false bottom and the tank body is The space in the false bottom forms a false bottom chamber, and the water phase feed pipe and the organic phase feed pipe are arranged in the false bottom chamber. The outlet ends of the water phase feed pipe and the organic phase feed pipe are all located in the liquid inlet and connected to the liquid inlet. Seal fit between them, the motor is fixed on the false roof, the stirring shaft passes through the false roof, the upper end of the stirring shaft is fixedly connected with the rotating shaft of the motor, the lower end of the stirring shaft is located in the mixing chamber and connected with a self-priming turbine agitator, located in The outer circumference of the stirring shaft above the self-priming turbine agitator is provided with a radial flow stirring paddle, and a number of inner baffles are arranged at intervals on the inner wall of the tank. Arc-shaped inner baffles and outer baffles, the inner baffles and outer baffles are provided with flow holes, and the flow holes on the inner baffles and outer baffles are arranged alternately. In the utility model, the self-priming turbine agitator can suck and disperse the water phase and the organic phase, make it quickly mix to form a mixed phase, and make the mixed phase rise axially in the mixing chamber to generate upward flow, and the mixed phase is in the process of rising Interlaced with the mixed-phase runoff moving radially along the circumference under the action of the radial flow stirring paddle to form a three-dimensional cross-flow to accelerate the mixing of the aqueous phase and the organic phase, the formed three-dimensional cross-flow then passes through the inner baffle and the outer baffle in turn The flow hole on the upper part is dispersed for the second time, and the mixed phase between the inner baffle and the outer baffle, and between the outer baffle and the inner wall of the mixing chamber is interleaved with the mixed phase in the axial direction for the second runoff to reach the water phase. Fully and evenly mixed with the mixed phase, the lithium element in the water phase is fully and quickly transferred to the organic phase, and finally the mixed phase rises to the liquid outlet and overflows to the clarification chamber of the extraction tank for clarification and phase separation.

Preferably, the radial flow stirring blade includes a first radial stirring blade and a second radial stirring blade, and the first radial stirring blade and the second radial stirring blade form a "V" shape structure , the first radial stirring blade is provided with dispersion holes. The second radial stirring blade in the radial flow stirring blade plays the role of horizontal stirring, causing the mixed phase to move radially along the circumference. The first radial stirring blade is provided with dispersion holes, which can mix the mixed phase. The water phase and the organic phase in the phase form small droplets respectively, which increases the contact area between the water phase and the organic phase, so that the lithium element in the water phase is quickly transferred to the organic phase, and the kinetics of mass transfer of the lithium element is improved.

Preferably, the first radial stirring blade and the second radial stirring blade are homogeneous and integral structures.

As a preference, a liquid distribution plate is provided in the liquid inlet, a liquid distribution hole is provided on the liquid distribution plate, and the outlet ends of the aqueous phase feed pipe and the organic phase feed pipe are located in the liquid inlet and connected to the cloth The liquid plates are offset. The liquid distribution plate can disperse the water phase and the organic phase, so that the mixing chamber can be mixed quickly and uniformly, which is beneficial to improve the mixing efficiency.

Preferably, the liquid distribution hole is a tapered hole with a small top and a large bottom. The liquid distribution hole is a tapered hole with a small top and a large bottom, which can act as a deceleration, so that the water phase and the organic phase can be sucked by the self-priming turbine agitator.

Therefore, the utility model has the following beneficial effects: utilizing the cooperation between the self-priming turbine agitator, the radial flow stirring paddle, the inner baffle, the inner baffle and the outer baffle, the water phase and the organic phase can be In the mixing chamber, realize multiple dispersion and multiple runoff interlacing, increase the contact area between the water phase and the organic phase, so that the water phase and the organic phase can be fully and uniformly mixed, so that the lithium element in the water phase can be fully and quickly transferred to the organic phase Not only the mixing efficiency is high, but also the mixing effect is good.

Description of drawings

Fig. 1 is a kind of structure sectional view of the utility model.

Fig. 2 is a cross-sectional view along A-A direction in Fig. 1 .

In the figure: tank body 1, motor 2, stirring shaft 3, false top 4, false bottom 5, liquid inlet 6, mixing chamber 7, liquid outlet 8, false bottom chamber 9, water phase feed pipe 10, organic phase Feed pipe 11, self-priming turbine agitator 12, radial flow agitating paddle 13, inner baffle 14, inner baffle 15, outer baffle 16, flow hole 17, first radial agitating blade 18, the second radial stirring paddle 19, the dispersion hole 20, the liquid distribution plate 21, and the liquid distribution hole 22.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

As shown in Figure 1 and Figure 2, an extraction tank enhanced mixing chamber for extracting lithium from salt lake brine by the box-type extraction method includes a circular tank body 1, a motor 2 and a stirring shaft 3, and the top of the tank body is fixed. False roof 4, the bottom of the tank body is fixed with a false bottom 5, the space between the false top and false bottom forms a mixing chamber 7, the upper part of the mixing chamber is opened with a liquid outlet 8, and the false bottom is opened with a liquid inlet 6, the liquid inlet A liquid distribution plate 21 is fixed inside the mouth, and a liquid distribution hole 22 is opened on the liquid distribution plate. The liquid distribution hole is a tapered hole with a small upper part and a larger lower part. The space between the false bottom and the tank body forms a false bottom chamber 9, and the false bottom chamber A water phase feed pipe 10 and an organic phase feed pipe 11 are provided. After the outlet ends of the water phase feed pipe and the organic phase feed pipe are bent upwards, they are both located in the liquid inlet and offset against the bottom surface of the liquid distribution plate. The material pipe and the organic phase feed pipe are sealed and matched with the liquid inlet, the motor is fixed on the false top, the stirring shaft passes through the false top, the upper end of the stirring shaft is fixedly connected with the rotating shaft of the motor, and the lower end of the stirring shaft is located in the mixing chamber and connected with The self-priming turbine agitator 12 has a radial flow stirring paddle 13 fixed on the outer circumference of the stirring shaft above the self-priming turbine agitator, and the radial flow stirring paddle includes a first radial stirring paddle of a homogeneous integral structure 18 and the second radial stirring paddle 19, the first radial stirring paddle and the second radial stirring paddle form a "V" shape structure, between the first radial stirring paddle and the second radial stirring paddle The outer corners of the outer knuckles are fixedly connected with the stirring shaft, the first radial stirring blade is provided with dispersion holes 20, and a number of inner baffles 14 are arranged at intervals on the inner wall of the tank, and the inner baffles are radially spaced with uniform Arc-shaped inner baffles 15 and outer baffles 16 are provided with flow holes 17 on the inner baffles and outer baffles, and the flow holes on the inner baffles and outer baffles are arranged alternately.

The operating principle of the utility model is: the water phase material and the organic phase material output from the water phase feed pipe and the organic phase feed pipe enter the mixing chamber after being dispersed by the liquid distribution plate, and the self-priming turbine agitator sucks and disperses the water Phase and organic phase, make it quickly mix to form a mixed phase and make the mixed phase rise axially in the mixing chamber to generate an upward flow, and the mixed phase is dispersed by the first radial stirring blade in the radial flow stirring impeller during the rising process Finally, under the action of the second radial stirring blade, it moves radially along the circumference, and intersects with the mixed-phase runoff rising in the axial direction to form a three-dimensional cross-flow, thereby accelerating the mixing of the water phase and the organic phase, and the formed three-dimensional cross-flow is again The secondary dispersion is carried out through the flow holes on the inner baffle and the outer baffle in turn, and the axially rising between the inner baffle and the outer baffle, and between the outer baffle and the inner wall of the mixing chamber. The mixed phase is interleaved with secondary runoff to achieve full and uniform mixing of the water phase and the mixed phase, and the lithium element in the water phase is fully and quickly transferred to the organic phase. Finally, the mixed phase rises to the liquid outlet and overflows to the extraction tank Clarification and phase separation are carried out in the clarification chamber.

The utility model utilizes the cooperation between the self-priming turbine agitator, the radial flow stirring paddle, the inner baffle, the inner baffle and the outer baffle, so that the water phase and the organic phase can be dispersed multiple times in the mixing chamber. And the interlacing of multiple runoffs increases the contact area between the water phase and the organic phase, so that the water phase and the organic phase can be fully and uniformly mixed, so as to achieve the purpose of fully and quickly transferring the lithium element in the water phase to the organic phase, and not only the mixing efficiency is high , and the mixing effect is good.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to The scope of protection of the technical solution of the utility model.

Claims (5)

1. a kind of extraction tank carrying lithium from salt lake bittern for box extraction strengthens mixing chamber, which is characterized in that including being in round Groove body (1), motor (2) and the agitating shaft (3) of shape, the groove body top are equipped with false top (4), and the bottom in groove body is equipped with false bottom (5), the false bottom is equipped with inlet (6), and the space between the false top and false bottom forms mixing chamber (7), the mixing chamber Top is equipped with liquid outlet (8), and the space between false bottom and groove body forms false bottom compartment (9), and being equipped with water phase in the vacation bottom compartment feeds Manage (10) and organic phase feed pipe (11), the outlet end of water phase feed pipe and organic phase feed pipe be respectively positioned in inlet and with into Cooperation is sealed between liquid mouth, the motor is fixed on vacation top, and the agitating shaft is pushed up across false, turn of agitating shaft upper end and motor Axis is fixedly connected, and agitating shaft lower end is located in mixing chamber and is connected with self-priming turbine stirrer (12), is located at self-priming turbine Agitating shaft outer circumference surface above blender is equipped with radial flow agitating paddle (13), and several inside foldings are equipped at intervals on groove body inner wall Flowing plate (14), it is radially spaced between the inside baffle plate to be equipped with arc-shaped interior flow-stopping plate (15) and outer flow-stopping plate (16), the interior flow-stopping plate, outer flow-stopping plate are equipped with flowing hole (17), and the flowing hole on interior flow-stopping plate, outer flow-stopping plate is staggeredly set It sets.

2. a kind of extraction tank carrying lithium from salt lake bittern for box extraction according to claim 1 strengthens mixing chamber, It is characterized in that, the radial flow agitating paddle includes the first radial stirrer paddle (18) and the second radial stirrer paddle (19), institute It states the first radial stirrer paddle and the second radial stirrer paddle constitutes " V " character form structure, set on the described first radial stirrer paddle There is dispersion hole (20).

3. a kind of extraction tank carrying lithium from salt lake bittern for box extraction according to claim 2 strengthens mixing chamber, It is characterized in that, the described first radial stirrer paddle and the second radial stirrer paddle are homogeneity integral structure.

4. a kind of extraction tank carrying lithium from salt lake bittern for box extraction according to claim 1 strengthens mixing chamber, It is characterized in that, being equipped with liquid distribution plate (21) in the inlet, the liquid distribution plate is equipped with liquid distributing hole (22), the water phase charging It offsets in the outlet end of pipe and organic phase feed pipe is located in the liquid inlet and with liquid distribution plate.

5. a kind of extraction tank carrying lithium from salt lake bittern for box extraction according to claim 4 strengthens mixing chamber, It is characterized in that, the liquid distributing hole is up-small and down-big bellmouth.