CN219093113U - Fluorine-removing device, intermittent operation and continuous operation lithium-dissolving fluorine-removing device - Google Patents

Abstract

The utility model discloses a fluorine-driving device which comprises a fluorine-driving groove, wherein an aeration component for blowing air into liquid in the fluorine-driving groove is arranged in the fluorine-driving groove, an exhaust port is arranged at the top of the fluorine-driving groove, and a fluorine-driving liquid inlet pipe, a fluorine-driving heating component for heating and preserving the liquid in the fluorine-driving groove and a fluorine-driving stirring component for driving the liquid in the fluorine-driving groove to flow are also arranged on the fluorine-driving groove. The utility model also provides an intermittent lithium-dissolving fluorine-removing device and a continuous lithium-dissolving fluorine-removing device. According to the fluorine-removing device, air is blown in through the aeration component, the temperature of liquid is controlled through the fluorine-removing heating component, and then fluorine ions in the solution can be removed through stirring of the stirring component, so that large-scale removal of fluorine ions in the lithium-containing solution can be realized, and the fluorine-removing effect is good.

Description

Fluorine-removing device, intermittent operation and continuous operation lithium-dissolving fluorine-removing device

Technical Field

The utility model belongs to the field of lithium-containing waste residue recovery treatment equipment, and particularly relates to a fluorine-removing device and a lithium-dissolving fluorine-removing device.

Background

The lithium-containing fluoride slag refers to lithium-containing fluoride-containing waste slag, mainly from waste slag generated by adding lithium fluoride in the process of removing calcium and magnesium from sodium fluoride and electrolyzing aluminum on a battery material wet treatment line, and the main components of the lithium-containing fluoride slag are lithium fluoride or a fluorine lithium compound.

The treatment mode of the lithium-containing fluoride slag can be generally to adopt water addition and slurry mixing, then acid treatment is added into the slurry to dissolve lithium to obtain a lithium-containing solution, meanwhile, hydrogen fluoride which is easy to dissolve in water can be generated in the acid dissolution process (see, for example, patent CN 109264749A), and fluorine ions remained in the lithium-containing solution can have a certain influence on the purity and the like of a final lithium-containing product. In the prior art, excessive attention is not paid to fluorine ions remained in the lithium-containing solution, so that the research and development of the lithium-dissolving fluorine-removing device aiming at the acid-dissolving treatment process of the lithium-containing fluoride slag is significant in reducing the fluorine ions in the lithium-containing solution.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings in the background art, and provides a fluorine-removing device with high fluorine-removing effect, a lithium-dissolving fluorine-removing device capable of being used for intermittent operation of lithium-containing fluoride residues, and a lithium-dissolving fluorine-removing device capable of being used for continuous operation of the lithium-containing fluoride residues. In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the utility model provides a fluorine device, includes drives the fluorine groove, it is used for to drive to be equipped with in the fluorine groove to be used for to the aeration subassembly of blowing in air in the liquid in the fluorine groove, the top of driving the fluorine groove is equipped with the gas vent, it still is equipped with on the fluorine groove to drive fluorine feed liquor pipe, is used for heating keep warm drive fluorine heating element and the drive that is used for driving of the flow of the liquid in the fluorine groove drives fluorine stirring subassembly.

In the fluorine-driving device, preferably, the aeration assembly is a compressed air coil pipe arranged along the inner wall of the fluorine-driving groove, a plurality of aeration holes are uniformly formed in the compressed air coil pipe, and a compressed air inlet pipe is connected to the compressed air coil pipe. According to the utility model, the coil pipe is arranged in the fluorine-driving groove, and the small holes are drilled on the coil pipe, so that compressed air is more uniformly introduced into the fluorine-driving groove, and the blowing-off of fluorine is accelerated.

In the above fluorine-driving device, preferably, the fluorine-driving heating component is a heating jacket arranged on the outer wall of the fluorine-driving groove, and a steam pipe is connected to the heating jacket; the fluorine-driving stirring assembly comprises a fluorine-driving stirring motor and a fluorine-driving stirring paddle extending into the fluorine-driving groove. By introducing steam into the jacket, a heat-preserving heat source can be provided for the fluorine-driving groove. The fluorine-driving stirring paddle can be composed of three layers of stirring paddles which are spiral blades, wherein the bottom paddles are 200-300mm away from the bottom, and the heights of the three paddles are evenly distributed.

In the above fluorine-driving device, preferably, a fluorine-driving liquid drain pipe is arranged at the bottom of the fluorine-driving groove, a fluorine-driving acid supplementing pipe is arranged on the fluorine-driving groove, and a plurality of flow blocking plates are uniformly arranged on the inner side wall of the fluorine-driving groove. The fluorine-driving liquid discharge pipe is used for discharging liquid in the fluorine-driving groove, the fluorine-driving acid-supplementing pipe supplements acid in the fluorine-driving process, the pH value of the reaction is controlled, and the flow baffle plate can change the movement direction of fluid in the groove and reduce waves in the groove.

In the above fluorine-driving device, preferably, the fluorine-driving liquid inlet pipe is arranged at the bottom of the fluorine-driving groove, fluorine-driving overflow ports are arranged on the side wall above the fluorine-driving groove, a plurality of fluorine-driving grooves are connected in series, adjacent fluorine-driving grooves are connected through fluorine-driving drainage pipes, one end of each fluorine-driving drainage pipe is connected with the fluorine-driving overflow port of the previous fluorine-driving groove, and the other end of each fluorine-driving drainage pipe is connected with the fluorine-driving liquid inlet pipe of the next fluorine-driving groove. According to the utility model, through the serial connection of the fluorine-driving grooves, the high-efficiency removal of fluorine ions in the lithium-containing solution can be realized.

The utility model also provides an intermittent operation lithium-dissolving fluorine-removing device which comprises a lithium-dissolving tank, a filtering device and the fluorine-removing device, wherein a lithium-dissolving heating component for heating and preserving the liquid in the lithium-dissolving tank and a lithium-dissolving stirring component for driving the liquid in the lithium-dissolving tank to flow are arranged on the lithium-dissolving tank, a lithium-containing slurry feeding pipe and an acid liquid feeding pipe are arranged above the lithium-dissolving tank, a lithium-dissolving liquid discharging pipe (with a pollution discharge function) is arranged at the bottom of the lithium-dissolving tank, the lithium-dissolving tank is connected with an inlet of the filtering device through the lithium-dissolving liquid discharging pipe, and a filtrate outlet of the filtering device is connected with a fluorine-removing liquid inlet pipe of the fluorine-removing tank.

In the intermittent lithium dissolving and fluorine removing device, preferably, a rectifying cylinder is fixedly arranged in the lithium dissolving tank through a supporting frame, the rectifying cylinder is a round cylinder body, the distance between the bottom of the rectifying cylinder and the bottom of the lithium dissolving tank is 300-500mm, the height of the rectifying cylinder is 40-50% of the height of an inner cavity of the lithium dissolving tank, and the diameter of the rectifying cylinder is 28-33% of the diameter of the lithium dissolving tank (the inner cavity is round). The rectifying cylinder is used for controlling the flow direction of the fluid to help increase the stirring intensity. The support frame is a support bar for fixing the rectifying cylinder on the wall of the lithium dissolving tank.

In the intermittent operation lithium dissolving and fluorine removing device, preferably, the bottom of the lithium dissolving tank is provided with a special-shaped tank bottom assembly for avoiding slag accumulation, the special-shaped tank bottom assembly comprises a first tank bottom which is concave downwards and a second tank bottom which is convex upwards, the second tank bottom is positioned at the bottom center of the lithium dissolving tank, the first tank bottom is positioned between the second tank bottom and the side wall of the bottom of the lithium dissolving tank, the first tank bottom is in seamless connection with the second tank bottom, and the lithium dissolving liquid discharge pipe extends to the concave part of the first tank bottom in the lithium dissolving tank. The unique bottom structure for preventing the sinking adopted in the utility model is particularly a circular arc upper convex structure, so that the problem that slag accumulation is easy to occur in the stirring dead angles of the groove wall, the groove bottom and the center position of the stirring paddle of the lithium dissolving groove is avoided, the accumulation of materials at the dead angles of the bottom is effectively prevented, and slag discharge is also facilitated by enabling the lithium dissolving liquid discharge pipe to be arranged at the concave position of the first groove bottom.

In the intermittent operation lithium-dissolving fluorine-removing device, preferably, the lithium-dissolving heating component is a steam heating pipe which extends into the lithium-dissolving tank and can discharge hot steam, and the steam enters the lithium-dissolving tank to provide a heat source for the lithium-dissolving tank; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor and a lithium dissolving stirring paddle extending into the lithium dissolving tank, the stirring paddle stirs and drives liquid in the lithium dissolving tank to flow, the stirring paddles can be composed of three layers of stirring paddles and are spiral blades, the bottom paddles are 300-500mm away from the bottom, and the heights of the three paddles are evenly distributed.

The intermittent lithium dissolving and fluorine removing device of the utility model has the advantages that the lithium dissolving tank is a reaction tank with stirring and special bottom structure, the fluorine removing tank can be composed of three reaction tanks with stirring and compressed air coil pipes with the same structure, and then through the filtering equipment, the two reaction tanks are combined by the filtering equipment, so that the dissolution, solid-liquid separation and fluorine removal of the lithium-containing fluoride residues can be realized. Taking the example of treating the lithium-containing fluoride slag by oxalic acid, the working principle and working process of the lithium-dissolving fluorine-removing device disclosed by the utility model are briefly described as follows:

1. oxalic acid and fluorine-containing lithium slag enter a lithium dissolving tank from an acid liquid feeding pipe and a lithium-containing slurry feeding pipe respectively to carry out lithium dissolving reaction. 2. And discharging the reacted materials from the lithium dissolving liquid discharge pipe, pumping the materials to filtering equipment for solid-liquid separation, and directly flowing the liquid into the fluorine-removing groove. 3. Under the condition of continuous stirring of heat preservation and compressed air blowing, the liquid in the fluorine-driving groove drives fluorine in the liquid by controlling a lower pH value through a fluorine-driving acid supplementing pipe, and after the liquid passes through the 3-level fluorine-driving groove, the obtained fluorine-driving liquid has lower fluorine content in the lithium-containing solution at the moment and less impurity fluorine ions in the lithium-containing solution.

The utility model further provides a continuous operation lithium dissolving and fluorine removing device, which comprises a lithium dissolving tank, a sedimentation tank and the fluorine removing device, wherein a lithium dissolving heating component for heating and preserving liquid in the lithium dissolving tank and a lithium dissolving stirring component for driving the liquid in the lithium dissolving tank to flow are arranged on the lithium dissolving tank, a lithium-containing slurry feeding pipe and an acid liquid feeding pipe are arranged above the lithium dissolving tank, a lithium dissolving overflow port is arranged on the side wall above the lithium dissolving tank, a sedimentation stirring component for driving the liquid in the sedimentation tank to flow is arranged on the sedimentation tank, a sedimentation liquid inlet pipe is arranged on one side above the side wall of the sedimentation tank, a sedimentation liquid outlet pipe is arranged on the other side of the sedimentation tank, and the lithium dissolving overflow port is communicated with the sedimentation liquid inlet pipe through a lithium dissolving drainage pipe and is connected with the fluorine removing liquid inlet pipe of the fluorine removing tank through a sedimentation drainage pipe.

In the lithium dissolving and fluorine removing device with continuous operation, preferably, a rectifying cylinder is fixedly arranged in the lithium dissolving tank through a supporting frame, the rectifying cylinder is a round cylinder body, the distance between the bottom of the rectifying cylinder and the bottom of the lithium dissolving tank is 300-500mm, the height of the rectifying cylinder is 40-50% of the height of an inner cavity of the lithium dissolving tank, and the diameter of the rectifying cylinder is 28-33% of the diameter of the lithium dissolving tank (the inner cavity is round). The rectifying cylinder is used for controlling the flow direction of the fluid to help increase the stirring intensity. The support frame is a support bar for fixing the rectifying cylinder on the wall of the lithium dissolving tank.

In the lithium dissolving and fluorine removing device with continuous operation, preferably, the bottom of the lithium dissolving tank is provided with a special-shaped tank bottom assembly for avoiding slag accumulation, the special-shaped tank bottom assembly comprises a first tank bottom which is concave downwards and a second tank bottom which is convex upwards, the second tank bottom is positioned at the bottom center of the lithium dissolving tank, the first tank bottom is positioned between the second tank bottom and the side wall of the bottom of the lithium dissolving tank, and the first tank bottom is in seamless connection with the second tank bottom.

In the above-mentioned continuous operation lithium-dissolving fluorine-removing device, preferably, a lithium-dissolving liquid drain pipe (also having a sewage draining function) is disposed at the bottom of the lithium-dissolving tank, and the lithium-dissolving liquid drain pipe extends into the lithium-dissolving tank to the recess of the first tank bottom.

The unique bottom structure for preventing the sinking adopted in the utility model is particularly a circular arc upper convex structure, so that the problem that slag accumulation is easy to occur in the stirring dead angles of the groove wall, the groove bottom and the center position of the stirring paddle of the lithium dissolving groove is avoided, the accumulation of materials at the dead angles of the bottom is effectively prevented, and slag discharge is also facilitated by enabling the lithium dissolving liquid discharge pipe to be arranged at the concave position of the first groove bottom.

In the above continuously operated lithium-dissolving fluorine-removing device, preferably, the lithium-dissolving heating component is a steam heating pipe which extends into the lithium-dissolving tank and can discharge hot steam, and the steam enters the lithium-dissolving tank to provide a heat source for the lithium-dissolving tank; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor and a lithium dissolving stirring paddle extending into the lithium dissolving tank, the stirring paddle stirs and drives liquid in the lithium dissolving tank to flow, the stirring paddles can be composed of three layers of stirring paddles and are spiral blades, the bottom paddles are 300-500mm away from the bottom, and the heights of the three paddles are evenly distributed.

In the lithium-dissolving fluorine-removing device with continuous operation, preferably, a sedimentation effusion groove for collecting supernatant in the sedimentation tank is arranged at the edge above the sedimentation tank, and the sedimentation liquid outlet pipe is connected with the sedimentation effusion groove. The sedimentation effusion ditch is an annular structure groove at the top of the sedimentation tank, and the supernatant liquid collecting groove.

In the lithium-dissolving fluorine-removing device with continuous operation, preferably, the bottom of the settling tank is funnel-shaped, and a settling slag discharge pipe is arranged at the low point of the bottom of the settling tank. The funnel-shaped sedimentation tank is favorable for sedimentation of the solid obtained by sedimentation, and the solid can be discharged through the sedimentation slag discharging pipe.

In the lithium-dissolving fluorine-removing device with continuous operation, preferably, the sedimentation stirring assembly comprises a sedimentation stirring motor and a sedimentation stirring paddle extending into the sedimentation tank, wherein the lower end of the sedimentation stirring paddle extends downwards to the bottom low point of the sedimentation tank. The sedimentation stirring paddles are irregularly distributed, and the distance between the bottom paddle and the bottom of the sedimentation tank is 80-120mm. The rotating speed is 2-5 rpm.

The lithium dissolving and fluorine removing device for continuous operation of the utility model has the advantages that the lithium dissolving tank is a reaction tank with a stirring structure and a special bottom structure, the sedimentation tank adopts a conical reaction tank with a large diameter and a low stirring rotation speed, the fluorine removing tank can be composed of three reaction tanks with stirring structures and compressed air coils and the same structure, and the combination of the three reaction tanks can realize the dissolution, sedimentation and fluorine removal of lithium-containing fluoride residues, and the continuous operation can be realized, so that the productivity is large and the energy consumption is low. And natural sedimentation is adopted during continuous operation, so that the investment of solid-liquid separation process equipment is reduced, and the production cost is reduced. Taking oxalic acid for treating lithium-containing fluoride slag as an example, the working principle and working process of the lithium-dissolving fluorine-removing device of the utility model are briefly described as follows:

1. oxalic acid and fluorine-containing lithium slag enter a lithium dissolving tank from an acid liquid feeding pipe and a lithium-containing slurry feeding pipe respectively to carry out lithium dissolving reaction. When the reaction tank is continuously fed, the dissolved lithium flows out from the lithium overflow port and enters the sedimentation tank. 2. After the reacted materials flow into the settling tank, the solid materials naturally settle under the action of low stirring, the slag is heavier and can sink into the tank bottom, the water is clear and is collected by a settling effusion ditch at the upper part of the settling tank, the water flows into the fluorine-driving tank through a settling drainage tube, the slag at the bottom can be pumped into filtering equipment by a pump for solid-liquid separation, and the liquid directly flows into the fluorine-driving tank. 3. Under the condition of continuous stirring of heat preservation and compressed air blowing, the liquid in the fluorine-driving groove drives fluorine in the liquid by controlling a lower pH value through a fluorine-driving acid supplementing pipe, and after the liquid passes through the 3-level fluorine-driving groove, the obtained fluorine-driving liquid has lower fluorine content in the lithium-containing solution at the moment and less impurity fluorine ions in the lithium-containing solution.

Compared with the prior art, the utility model has the advantages that:

1. according to the fluorine-removing device, air is blown in through the aeration component, the temperature of liquid is controlled through the fluorine-removing heating component, and then fluorine ions in the solution can be removed through stirring of the stirring component, so that large-scale removal of fluorine ions in the lithium-containing solution can be realized, and the fluorine-removing effect is good.

2. According to the intermittent operation lithium-dissolving fluorine-removing device, the lithium-containing fluoride slag can be dissolved, subjected to solid-liquid separation and fluorine-removing operation through the cooperation of the lithium-dissolving device, the filtering device and the fluorine-removing device, the whole process is convenient to operate, the productivity is high, the energy consumption is low, and the fluorine-removing effect is good.

3. The lithium dissolving and fluorine removing device for continuous operation can realize the operations of dissolving, settling and removing fluorine of lithium-containing fluoride residues through the cooperation of the lithium dissolving device, the settling device and the fluorine removing device, and has the advantages of convenient operation in the whole process, high productivity, low energy consumption, good fluorine removing effect, continuous operation and good industrial application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a fluorine-driving device in embodiment 1.

FIG. 2 is a schematic cross-sectional view of the A-A surface of FIG. 1 (the fluorine-driving paddles are not shown).

Fig. 3 is a schematic structural diagram of a lithium-dissolving fluorine-driving device operated intermittently in example 2.

FIG. 4 is a schematic cross-sectional view of the side B-B of FIG. 3 (lithium-dissolving stirring paddles, lithium-containing slurry feed pipes, steam heating pipes, and acid feed pipes are not shown).

Fig. 5 is a schematic structural diagram of a lithium-dissolving fluorine-driving device operated continuously in example 3.

Legend description:

201. a lithium dissolving tank; 202. a settling tank; 203. a fluorine-removing tank; 204. a lithium dissolving stirring motor; 205. a lithium-containing slurry feed tube; 206. a steam heating pipe; 207. an acid liquid feeding pipe; 208. a rectifying cylinder; 209. lithium dissolving stirring paddles; 210. a support frame; 211. a lithium dissolving drain pipe; 212. a special-shaped groove bottom assembly; 2121. a first groove bottom; 2122. a second groove bottom; 213. a lithium dissolving overflow port; 214. a lithium dissolving drainage tube; 215. sedimentation effusion ditch; 216. sedimentation stirring paddles; 217. a sedimentation stirring motor; 218. a sedimentation slag discharge pipe; 219. a sedimentation liquid outlet pipe; 220. sedimentation drainage tube; 221. an exhaust port; 222. a fluorine-driving stirring motor; 223. a heating jacket; 224. a flow baffle; 225. a compressed air coil; 226. a fluorine-expelling liquid discharge pipe; 227. fluorine-driving stirring paddles; 228. a fluorine-driving overflow port; 229. a fluorine-removing acid-supplementing pipe; 230. a compressed air inlet pipe; 231. a fluorine-expelling drainage tube; 232. a fluorine-driving liquid inlet pipe; 233. aeration holes; 234. sedimentation liquid inlet pipe; 235. and a filtering device.

Detailed Description

The present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the utility model, but the scope of the utility model is not limited to the specific embodiments shown.

Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present utility model.

Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present utility model are commercially available or may be prepared by existing methods.

Example 1:

as shown in fig. 1 and 2, the fluorine-driving device of this embodiment includes a fluorine-driving tank 203, an aeration assembly for blowing air into the liquid in the fluorine-driving tank 203 is disposed in the fluorine-driving tank 203, an exhaust port 221 is disposed at the top of the fluorine-driving tank 203, and a fluorine-driving liquid inlet pipe 232, a fluorine-driving heating assembly for heating the liquid in the heat-insulating fluorine-driving tank 203, and a fluorine-driving stirring assembly for driving the flow of the liquid in the fluorine-driving tank 203 are further disposed on the fluorine-driving tank 203.

In this embodiment, the aeration component is a compressed air coil 225 disposed along the inner wall of the fluorine-driving tank 203, a plurality of aeration holes 233 are uniformly formed in the compressed air coil 225, and a compressed air inlet pipe 230 is connected to the compressed air coil 225.

In the embodiment, the fluorine-driving heating component is a heating jacket 223 arranged on the outer wall of the fluorine-driving groove 203, and a steam pipe is connected to the heating jacket 223; the fluorine-driving stirring assembly comprises a fluorine-driving stirring motor 222 and a fluorine-driving stirring paddle 227 extending into the fluorine-driving tank 203. In this embodiment, the fluorine driving stirring motor 222 may be a conventional device. The fluorine-driving stirring paddle 227 can be composed of three layers of stirring paddles, wherein the stirring paddles are all helical blades, the bottom paddles are 200-300mm away from the bottom of the fluorine-driving groove 203 (the range is the range), and the heights of the three paddles are evenly distributed.

In this embodiment, a fluorine-driving liquid drain pipe 226 is disposed at the bottom of the fluorine-driving tank 203, a fluorine-driving acid supplementing pipe 229 is disposed on the fluorine-driving tank 203, and a plurality of baffle plates 224 (4 blocks are not shown in fig. 2) are uniformly disposed on the inner sidewall of the fluorine-driving tank 203.

In this embodiment, the fluorine-driving liquid inlet pipe 232 is disposed at the bottom of the fluorine-driving groove 203, the fluorine-driving overflow port 228 is disposed on the sidewall above the fluorine-driving groove 203, a plurality of fluorine-driving grooves 203 (3 fluorine-driving grooves are not shown in fig. 1) are serially connected, adjacent fluorine-driving grooves 203 are connected through the fluorine-driving drainage pipe 231, one end of the fluorine-driving drainage pipe 231 is connected with the fluorine-driving overflow port 228 of the preceding fluorine-driving groove 203, and the other end is connected with the fluorine-driving liquid inlet pipe 232 of the following fluorine-driving groove 203.

Example 2:

as shown in fig. 1-4, the intermittent operation lithium dissolving and fluorine removing device of the present embodiment includes a lithium dissolving tank 201, a filtering device 235 and a fluorine removing device in embodiment 1, a lithium dissolving heating component for heating and preserving the liquid in the lithium dissolving tank 201 and a lithium dissolving stirring component for driving the liquid in the lithium dissolving tank 201 to flow are disposed on the lithium dissolving tank 201, a lithium slurry feeding pipe 205 and an acid liquid feeding pipe 207 are disposed above the lithium dissolving tank 201, a lithium dissolving liquid discharging pipe 211 is disposed at the bottom of the lithium dissolving tank 201, the lithium dissolving tank 201 is connected with an inlet of the filtering device 235 through the lithium dissolving liquid discharging pipe 211, and a filtrate outlet of the filtering device 235 is connected with a fluorine removing liquid feeding pipe 232 of the fluorine removing tank 203.

In this embodiment, as shown in fig. 4, a rectifying cylinder 208 is fixedly arranged in the lithium dissolution tank 201 through a supporting frame 210, the rectifying cylinder 208 is a circular cylinder, the distance between the bottom of the rectifying cylinder 208 and the bottom of the lithium dissolution tank 201 is 300-500mm (all the above ranges), the height of the rectifying cylinder 208 is 40-50% of the height of the inner cavity of the lithium dissolution tank 201 (all the above ranges), and the diameter of the rectifying cylinder 208 is 28-33% of the diameter of the lithium dissolution tank 201 (all the above ranges).

In this embodiment, the bottom of the lithium dissolution tank 201 is provided with a special-shaped tank bottom assembly 212 for avoiding slag accumulation, the special-shaped tank bottom assembly 212 includes a first tank bottom 2121 recessed downward and a second tank bottom 2122 protruding upward, the second tank bottom 2122 is located at the bottom center of the lithium dissolution tank 201, the first tank bottom 2121 is located between the second tank bottom 2122 and the bottom sidewall of the lithium dissolution tank 201, the first tank bottom 2121 is seamlessly connected with the second tank bottom 2122, and the lithium dissolution drain tube 211 extends into the lithium dissolution tank 201 to the recess of the first tank bottom 2121.

In this embodiment, the lithium dissolution heating component is a steam heating pipe 206 extending into the lithium dissolution tank 201 and capable of discharging hot steam; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor 204 and a lithium dissolving stirring paddle 209 extending into the lithium dissolving tank 201. The lithium dissolving stirring paddle 209 can be composed of three layers of stirring paddles, which are all helical blades, wherein the bottom paddles are 300-500mm (the range can be all the above) away from the bottom of the lithium dissolving tank 201, and the heights of the three paddles are evenly distributed.

In this embodiment, the filter 235 may be a conventional filter such as a plate and frame filter.

Example 3:

as shown in fig. 1-2 and fig. 4-5, the continuously operated lithium-dissolving fluorine-removing device of the present embodiment includes a lithium-dissolving tank 201, a sedimentation tank 202 and a fluorine-removing device of embodiment 1, a lithium-dissolving heating component for heating and insulating the liquid in the lithium-dissolving tank 201 and a lithium-dissolving stirring component for driving the liquid in the lithium-dissolving tank 201 to flow are disposed on the lithium-dissolving tank 201, a lithium-containing slurry feed pipe 205 and an acid liquid feed pipe 207 are disposed above the lithium-dissolving tank 201, a lithium-dissolving overflow port 213 is disposed on the side wall above the lithium-dissolving tank 201, a sedimentation stirring component for driving the liquid in the sedimentation tank 202 to flow is disposed on the sedimentation tank 202, a sedimentation liquid feed pipe 234 is disposed on one side above the side wall of the sedimentation tank 202, a sedimentation liquid outlet 219 is disposed on the other side, the lithium-dissolving overflow port 213 is communicated with the sedimentation liquid feed pipe 234 via a lithium-dissolving drain pipe 214, and the sedimentation liquid outlet 219 is connected with the fluorine-removing liquid feed pipe 232 of the fluorine-removing tank 203 via a sedimentation drain pipe 220.

In this embodiment, as shown in fig. 4, a rectifying cylinder 208 is fixedly arranged in the lithium dissolution tank 201 through a supporting frame 210, the rectifying cylinder 208 is a circular cylinder, the distance between the bottom of the rectifying cylinder 208 and the bottom of the lithium dissolution tank 201 is 300-500mm (all the above ranges), the height of the rectifying cylinder 208 is 40-50% of the height of the inner cavity of the lithium dissolution tank 201 (all the above ranges), and the diameter of the rectifying cylinder 208 is 28-33% of the diameter of the lithium dissolution tank 201 (all the above ranges).

In this embodiment, a special-shaped tank bottom assembly 212 for avoiding slag accumulation is arranged at the bottom of the lithium dissolution tank 201, the special-shaped tank bottom assembly 212 comprises a first tank bottom 2121 which is concave downwards and a second tank bottom 2122 which is convex upwards, the second tank bottom 2122 is positioned at the bottom center of the lithium dissolution tank 201, the first tank bottom 2121 is positioned between the second tank bottom 2122 and the bottom side wall of the lithium dissolution tank 201, and the first tank bottom 2121 is in seamless connection with the second tank bottom 2122; the bottom of the lithium dissolution tank 201 is provided with a lithium dissolution liquid discharge pipe 211, and the lithium dissolution liquid discharge pipe 211 extends into the lithium dissolution tank 201 to a concave position of the first tank bottom 2121.

In this embodiment, the lithium dissolution heating component is a steam heating pipe 206 extending into the lithium dissolution tank 201 and capable of discharging hot steam; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor 204 and a lithium dissolving stirring paddle 209 extending into the lithium dissolving tank 201. The lithium dissolving stirring paddle 209 can be composed of three layers of stirring paddles, which are all helical blades, wherein the bottom paddles are 300-500mm (the range can be all the above) away from the bottom of the lithium dissolving tank 201, and the heights of the three paddles are evenly distributed.

In the embodiment, a sedimentation effusion groove 215 for collecting supernatant in the sedimentation tank 202 is arranged at the upper edge of the sedimentation tank 202, and a sedimentation liquid outlet pipe 219 is connected with the sedimentation effusion groove 215; the bottom of the sedimentation tank 202 is funnel-shaped, and a sedimentation slag discharging pipe 218 is arranged at the lower point of the bottom of the sedimentation tank 202; the sedimentation agitation assembly includes a sedimentation agitation motor 217 and a sedimentation agitation paddle 216 extending into the sedimentation tank 202, the lower end of the sedimentation agitation paddle 216 extending downward to a bottom low point of the sedimentation tank 202. In this embodiment, the sedimentation stirring paddles 216 are irregularly distributed, and the bottom paddles are spaced 80-120mm from the bottom of the sedimentation tank 202, and the stirring speed is low, for example, 2-5 rpm.

When the device in the embodiment is used for treating the lithium-containing fluoride slag, the fluorine-removing device in the embodiment 1 can be used for removing fluorine in a lithium-containing solution obtained by acid dissolution of the lithium-containing fluoride slag, the intermittent operation lithium-dissolving fluorine-removing device in the embodiment 2 can realize acid dissolution, solid-liquid separation and fluorine removal of the lithium-containing fluoride slag, the continuous operation lithium-dissolving fluorine-removing device in the embodiment 3 can realize acid dissolution, sedimentation and fluorine removal of the lithium-containing fluoride slag, the device in each embodiment has good effect, high productivity and low energy consumption, and can select continuous or intermittent operation, thereby having wide market application prospect. Of course, the size mixing and classifying device of the embodiment can also be used for acid dissolution and fluorine removal of other fluorine-containing materials.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a fluorine device, its characterized in that, including driving fluorine groove (203), be equipped with in driving fluorine groove (203) be used for to blow in the aeration component of air in driving fluorine groove (203), the top of driving fluorine groove (203) is equipped with gas vent (221), still be equipped with on driving fluorine groove (203) and drive fluorine feed liquor pipe (232), be used for heating and keep warm driving fluorine heating element and being used for driving the flow of driving the interior liquid of fluorine groove (203) drives fluorine stirring subassembly.

2. The fluorine-driving device according to claim 1, wherein the aeration component is a compressed air coil (225) arranged along the inner wall of the fluorine-driving groove (203), a plurality of aeration holes (233) are uniformly formed in the compressed air coil (225), and a compressed air inlet pipe (230) is connected to the compressed air coil (225).

3. The fluorine-driving device according to claim 1, wherein the fluorine-driving heating component is a heating jacket (223) arranged on the outer wall of the fluorine-driving groove (203), and a steam pipe is connected to the heating jacket (223); the fluorine-driving stirring assembly comprises a fluorine-driving stirring motor (222) and a fluorine-driving stirring paddle (227) extending into the fluorine-driving groove (203).

4. The fluorine driving device according to claim 1, wherein a fluorine driving liquid drain pipe (226) is arranged at the bottom of the fluorine driving groove (203), a fluorine driving acid supplementing pipe (229) is arranged on the fluorine driving groove (203), and a plurality of baffle plates (224) are uniformly arranged on the inner side wall of the fluorine driving groove (203).

5. The fluorine device according to any one of claims 1-4, wherein the fluorine-driving liquid inlet pipe (232) is arranged at the bottom of the fluorine-driving groove (203), fluorine-driving overflow ports (228) are arranged on the side wall above the fluorine-driving groove (203), a plurality of fluorine-driving grooves (203) are connected in series, adjacent fluorine-driving grooves (203) are connected through fluorine-driving drainage pipes (231), one end of each fluorine-driving drainage pipe (231) is connected with the fluorine-driving overflow port (228) of the previous fluorine-driving groove (203), and the other end of each fluorine-driving drainage pipe is connected with the fluorine-driving liquid inlet pipe (232) of the next fluorine-driving groove (203).

6. The utility model provides a dissolve lithium fluorine device that intermittent type was operated, its characterized in that includes dissolves lithium groove (201), filter equipment (235) and the fluorine device of any one of claims 1-5, dissolve and be equipped with on lithium groove (201) and be used for heating and keep warm dissolve lithium heating element of liquid in lithium groove (201) and be used for driving dissolve lithium stirring subassembly that dissolves the flow of liquid in lithium groove (201), dissolve lithium groove (201) top and be equipped with contain lithium thick liquid inlet pipe (205) and acidizing fluid inlet pipe (207), dissolve lithium groove (201) bottom and be equipped with dissolve lithium drain pipe (211), dissolve lithium groove (201) through dissolve the entry linkage of lithium drain pipe (211) with filter equipment (235), the filtrate outlet of filter equipment (235) with the fluorine feed pipe (232) that drives of fluorine groove (203).

7. The intermittent lithium dissolving and fluorine removing device according to claim 6, wherein a rectifying cylinder (208) is fixedly arranged in the lithium dissolving tank (201) through a supporting frame (210), the rectifying cylinder (208) is a round cylinder, the distance between the bottom of the rectifying cylinder (208) and the bottom of the lithium dissolving tank (201) is 300-500mm, and the height of the rectifying cylinder (208) is 40-50% of the height of an inner cavity of the lithium dissolving tank (201);

the bottom of the lithium dissolving tank (201) is provided with a special-shaped tank bottom assembly (212) for avoiding slag accumulation, the special-shaped tank bottom assembly (212) comprises a first tank bottom (2121) which is concave downwards and a second tank bottom (2122) which is convex upwards, the second tank bottom (2122) is positioned at the center of the bottom of the lithium dissolving tank (201), the first tank bottom (2121) is positioned between the second tank bottom (2122) and the side wall of the bottom of the lithium dissolving tank (201), the first tank bottom (2121) is in seamless connection with the second tank bottom (2122), and the lithium dissolving drain pipe (211) extends into the lithium dissolving tank (201) to the concave part of the first tank bottom (2121);

the lithium dissolving heating component is a steam heating pipe (206) which extends into the lithium dissolving tank (201) and can discharge hot steam; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor (204) and a lithium dissolving stirring paddle (209) extending into the lithium dissolving tank (201).

8. The utility model provides a fluorine device is driven to lithium dissolving of serialization operation, its characterized in that includes lithium dissolving tank (201), subsider (202) and the fluorine device of driving of any one of claims 1-5, be equipped with on lithium dissolving tank (201) and be used for heating and keep warm lithium dissolving heating element of liquid in lithium dissolving tank (201) and be used for driving lithium dissolving tank (201) internal liquid's mobile lithium dissolving stirring subassembly, lithium dissolving tank (201) top is equipped with lithium-containing thick liquid inlet pipe (205) and acidizing fluid inlet pipe (207), be equipped with lithium dissolving overflow mouth (213) on lithium dissolving tank (201) top lateral wall, be equipped with on subsider (202) and be used for driving the sedimentation stirring subassembly of the internal liquid's of subsider (202) mobile, one side is equipped with sedimentation feed liquor pipe (234) above the lateral wall of subsider (202), and the opposite side is equipped with sedimentation drain pipe (219), lithium dissolving mouth (213) are through a lithium dissolving overflow mouth (214) with sedimentation feed liquor pipe (234) intercommunication, sedimentation liquor pipe (219) through a drainage tube (220) and fluorine drive fluid (203) and drive liquor (232).

9. The continuously operated lithium dissolving and fluorine driving device according to claim 8, wherein a rectifying cylinder (208) is fixedly arranged in the lithium dissolving tank (201) through a supporting frame (210), the rectifying cylinder (208) is a round cylinder, the distance from the bottom of the rectifying cylinder (208) to the bottom of the lithium dissolving tank (201) is 300-500mm, and the height of the rectifying cylinder (208) is 40-50% of the height of an inner cavity of the lithium dissolving tank (201);

the bottom of the lithium dissolving tank (201) is provided with a special-shaped tank bottom assembly (212) for avoiding slag accumulation, the special-shaped tank bottom assembly (212) comprises a first tank bottom (2121) which is concave downwards and a second tank bottom (2122) which is convex upwards, the second tank bottom (2122) is positioned at the center of the bottom of the lithium dissolving tank (201), the first tank bottom (2121) is positioned between the second tank bottom (2122) and the side wall of the bottom of the lithium dissolving tank (201), and the first tank bottom (2121) is in seamless connection with the second tank bottom (2122);

a lithium dissolving drain pipe (211) is arranged at the bottom of the lithium dissolving tank (201), and the lithium dissolving drain pipe (211) extends into the lithium dissolving tank (201) to the concave part of the first tank bottom (2121);

the lithium dissolving heating component is a steam heating pipe (206) which extends into the lithium dissolving tank (201) and can discharge hot steam; the lithium dissolving stirring assembly comprises a lithium dissolving stirring motor (204) and a lithium dissolving stirring paddle (209) extending into the lithium dissolving tank (201).

10. The continuously operated lithium-dissolved fluorine-removing device according to claim 8 or 9, wherein a sedimentation effusion channel (215) for collecting supernatant in the sedimentation tank (202) is arranged at the upper edge of the sedimentation tank (202), and the sedimentation liquid outlet pipe (219) is connected with the sedimentation effusion channel (215);

the bottom of the sedimentation tank (202) is funnel-shaped, and a sedimentation slag discharging pipe (218) is arranged at the bottom low point of the sedimentation tank (202);

the sedimentation stirring assembly comprises a sedimentation stirring motor (217) and a sedimentation stirring paddle (216) extending into the sedimentation tank (202), wherein the lower end of the sedimentation stirring paddle (216) extends downwards to the bottom low point of the sedimentation tank (202).

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