CN210419275U - Industrial grade lithium carbonate subsides extraction element - Google Patents

Abstract

The utility model relates to a technical field is made to the lithium carbonate, and discloses an industrial grade lithium carbonate subsides extraction element, including hydrogenation liquid reation kettle and centrifuge, centrifuge is located hydrogenation liquid reation kettle's right side, the feed inlet has been seted up at the left top of hydrogenation liquid reation kettle, hydrogenation liquid reation kettle's left side and the below fixedly connected with circulating pipe that is located the feed inlet. This extraction element is subsided to industrial-grade lithium carbonate, the filtration pore filters the mother liquor in with the first heating agitator tank through the second pipe bottom in the first return pipe, then open the water pump on the first return pipe, retrieve the recycle in leading-in hydrogenation liquid reation kettle with the mother liquor through water pump and first return pipe, then retrieve the recycle in leading-in hydrogenation liquid reation kettle with the wash water through second return pipe and water pump, thereby it is high to have reached the resource recovery rate, the purpose that energy resource consumption is lower.

Description

Industrial grade lithium carbonate subsides extraction element

Technical Field

The utility model relates to a technical field is made to the lithium carbonate, specifically is an extraction element is subsided to industrial-grade lithium carbonate.

Background

Lithium carbonate, an inorganic compound, the chemical formula of which is Li2CO3, is colorless monoclinic crystal or white powder, the density is 2.11g/cm3, the melting point is 618 ℃ (1.013 x 10^5Pa), the lithium carbonate is soluble in dilute acid, slightly soluble in water, relatively high in solubility in cold water and insoluble in alcohol and acetone, and can be used for preparing ceramics, medicines, catalysts and the like, and the lithium carbonate is a common lithium ion battery raw material; on the other hand, most of the resources of the global salt lake are high-magnesium low-lithium types, and the technical difficulty of the process for purifying and separating lithium carbonate from high-magnesium low-lithium old brine is high, so that the technologies are only mastered in a few foreign companies before, and the lithium carbonate industry has a technical barrier, so that the global oligopolism of the lithium carbonate industry is created.

The extraction of lithium carbonate is generally carried out by using a carbonization method, but the methods for preparing battery-grade lithium carbonate by using the carbonization method in the prior art are only limited to laboratory methods and small-scale production, are not suitable for large-scale industrial production, and the production equipment in the prior art has high energy consumption and is not beneficial to the promotion of environmental protection at present, so an industrial-grade lithium carbonate sedimentation extraction device is proposed at present to solve the problems.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides an extraction element is subsided to industrial-grade lithium carbonate possesses manufacturing efficiency and more increases, and energy resource consumption advantage such as lower has solved the carbonization method among the prior art and has prepared battery level lithium carbonate's method and all only limited to laboratory method and small-scale production, is not yet applicable to large-scale industrial production, and the higher problem of production facility energy resource consumption among the prior art.

For realizing above-mentioned manufacturing efficiency more heightening, purpose that energy consumption is lower, the utility model provides a following technical scheme: the utility model provides an industrial grade lithium carbonate subsides extraction element, includes hydrogenation liquid reation kettle and centrifuge, centrifuge is located hydrogenation liquid reation kettle's right side, the feed inlet has been seted up at the left top of hydrogenation liquid reation kettle, hydrogenation liquid reation kettle's left side is located the below fixedly connected with circulating pipe of feed inlet, the left one end fixed connection in hydrogenation liquid reation kettle's bottom is kept away from to the circulating pipe, the bottom fixedly connected with fluid-discharge tube of circulating pipe, hydrogenation liquid reation kettle's right side is provided with the precipitation retort, the one end fixed connection in precipitation retort left top of circulating pipe is kept away from to the fluid-discharge tube, the bottom fixedly connected with first pipe on precipitation retort right side, the right side of precipitation retort is provided with first heating agitator tank, the one end fixed connection in first heating agitator tank left top of precipitation retort is kept away from to first pipe, the first heating and stirring box is connected with the precipitation reaction tank through a first pipe, the top of the first heating and stirring box is fixedly provided with a first motor, the bottom of the first heating and stirring box is fixedly connected with a second pipe, the bottom of the second pipe is fixedly provided with a first water storage tank, the left side of the bottom of the first water storage tank is fixedly connected with a first return pipe, one end of the first return pipe, far away from the first water storage tank, is fixedly connected with the left side of the hydrogenation liquid reaction kettle, the right side of the first heating and stirring box is provided with a second heating and stirring box, one end of the second pipe, far away from the first heating and stirring box, is fixedly arranged at the top of the left side of the second heating and stirring box, the first heating and stirring box is connected with the second heating and stirring box through a second pipe, the top of the second heating and stirring box is fixedly provided with a second motor, and the bottom of the second heating and stirring box is fixedly, the bottom of third pipe fixed mounting has the second storage water tank, the left side fixedly connected with second back flow of second storage water tank bottom, the one end and the first back flow intercommunication of second storage water tank are kept away from to the second back flow, the third pipe is located centrifuge's top, the bottom of second storage water tank and centrifuge's top contact.

Preferably, a cooling water pipe is fixedly mounted on the surface of the circulating pipe, an air inlet is formed in the bottom of the circulating pipe and positioned on the left side of the liquid discharge pipe, and a circulating pump is fixedly mounted at the right end of the bottom of the circulating pipe.

Preferably, the top of the precipitation reaction tank is provided with a precipitator addition port, and the bottom of the precipitation reaction tank is provided with an impurity precipitation outlet.

Preferably, a neutralizer adding port is formed in the top of the first heating stirring box and located on the right side of the first motor, and a pure water adding port is formed in the top of the second heating stirring box and located on the right side of the second motor.

Preferably, the equal fixedly connected with stirring pivot of output of first motor and second motor, the bottom of stirring pivot extends to the inside of first heating agitator tank and second heating agitator tank respectively, the fixed surface of stirring pivot installs a plurality of align to grid's stirring vane, the equal fixed mounting of inner wall of first heating agitator tank and second heating agitator tank both sides has the heat conduction protection casing, the inner wall of first heating agitator tank and second heating agitator tank both sides and the inside that is located the heat conduction protection casing all are provided with the heater strip.

Preferably, the inside of centrifuge is provided with the centrifuge tank, the left side of centrifuge bottom is provided with the hole that leaks.

Preferably, valves are fixedly mounted on the surfaces of the first return pipe, the drain pipe, the first guide pipe, the second return pipe, the second guide pipe and the third guide pipe.

Preferably, the surfaces of the drain pipe, the first conduit and the first return pipe are all fixedly provided with a water pump.

Preferably, the bottom of the second conduit and the bottom of the third conduit are both provided with a plurality of filtering holes, the second conduit is communicated with the first water storage tank through the filtering holes, and the third conduit is communicated with the second water storage tank through the filtering holes.

Preferably, a plurality of drain holes are formed in the surface of the first guide pipe, which is located on one side inside the precipitation reaction tank, and a filter screen is fixedly mounted on the surface of the first guide pipe, which is located on one side inside the precipitation reaction tank and located on the outer side of the drain holes.

Compared with the prior art, the utility model provides an extraction element is subsided to industrial-grade lithium carbonate possesses following beneficial effect:

1. this extraction element is subsided to industrial-grade lithium carbonate, mother liquor through the filtration pore of crossing of second pipe bottom in with the first heating agitator tank filters first return pipe in, then open the water pump on the first return pipe, retrieve the recycle in leading-in hydrogenation liquid reation kettle with mother liquor through water pump and first return pipe, simultaneously when second heating agitator tank internal suction and lithium carbonate essence pass through the third pipe, filter the second storage water tank in with washing water through the filtration pore of crossing of third pipe bottom, then retrieve the recycle in leading-in hydrogenation liquid reation kettle with washing water through second return pipe and water pump, thereby it is high to have reached the rate of recovery of resources, the purpose that energy resource consumption is lower.

2. This extraction element is subsided to industrial grade lithium carbonate carries out circulation hydrogenation through material in circulating pump and the circulating pipe in with hydrogenation liquid reation kettle, replaces the agitator in the existing equipment, and stirring strength is big, and the energy consumption is low to the purpose that work efficiency is higher has been reached.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the interior of the hydrogenation solution reactor of the present invention;

FIG. 3 is a sectional view of the interior of the precipitation reactor of the present invention;

FIG. 4 is a sectional view of the first heating and stirring tank of the present invention;

FIG. 5 is a sectional view of the second heating and stirring tank of the present invention;

fig. 6 is a cross-sectional view of the inside of the centrifuge of the present invention.

In the figure: 1. a hydrogenated liquid reaction kettle; 2. a pressure relief port; 3. a feed inlet; 4. a first return pipe; 5. a circulation pipe; 6. a cooling water pipe; 7. an air inlet; 8. a liquid discharge pipe; 9. a circulation pump; 10. a water pump; 11. an impurity precipitation outlet; 12. a precipitant addition port; 13. a precipitation reaction tank; 14. a first water storage tank; 15. a first conduit; 16. a first motor; 17. a neutralizer adding port; 18. a first heating and stirring box; 19. a second conduit; 20. a second motor; 21. a pure water addition port; 22. a second heating and stirring box; 23. a third conduit; 24. a second water storage tank; 25. a centrifuge; 26. a second return pipe; 27. a stirring rotating shaft; 28. a stirring blade; 29. a heat-conducting shield; 30. heating wires; 31. a filtration pore; 32. a centrifuge box; 33. and (4) water leakage holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, an industrial-grade lithium carbonate settling extraction device comprises a hydrogenation solution reaction kettle 1 and a centrifuge 25, wherein the centrifuge 25 is located on the right side of the hydrogenation solution reaction kettle 1, a feed inlet 3 is formed in the top of the left side of the hydrogenation solution reaction kettle 1, a circulation pipe 5 is fixedly connected to the left side of the hydrogenation solution reaction kettle 1 and below the feed inlet 3, one end of the circulation pipe 5, which is far away from the left side of the hydrogenation solution reaction kettle 1, is fixedly connected to the bottom of the hydrogenation solution reaction kettle 1, a drain pipe 8 is fixedly connected to the bottom of the circulation pipe 5, a precipitation reaction tank 13 is arranged on the right side of the hydrogenation solution reaction kettle 1, one end of the drain pipe 8, which is far away from the circulation pipe 5, is fixedly connected to the top of the left side of the precipitation reaction tank 13, a first guide pipe 15 is fixedly connected to the bottom of the right side of the precipitation reaction tank 13, a first heating and, the first heating and stirring box 18 is connected with the precipitation reaction tank 13 through a first conduit 15, a first motor 16 is fixedly installed at the top of the first heating and stirring box 18, a second conduit 19 is fixedly connected with the bottom of the first heating and stirring box 18, a first water storage tank 14 is fixedly installed at the bottom of the second conduit 19, a first return pipe 4 is fixedly connected with the left side of the bottom of the first water storage tank 14, one end of the first return pipe 4 far away from the first water storage tank 14 is fixedly connected with the left side of the hydrogenation liquid reaction kettle 1, a second heating and stirring box 22 is arranged at the right side of the first heating and stirring box 18, one end of the second conduit 19 far away from the first heating and stirring box 18 is fixedly installed at the top of the left side of the second heating and stirring box 22, the first heating and stirring box 18 is connected with the second heating and stirring box 22 through a second conduit 19, and a second motor 20 is fixedly installed at the top, a third conduit 23 is fixedly connected to the bottom of the second heating and stirring tank 22, when in use, a mixed solution of a carbonate type lithium source and one or more of pure water, mother liquor and washing water is added into the hydrogenation reaction kettle 1 through the feed inlet 3 for hydrogenation reaction to obtain a hydrogenation solution, then the hydrogenation solution is introduced into the precipitation reaction tank 13 through the liquid discharge pipe 8 for impurity removal, then the hydrogenation solution after impurity removal is introduced into the first heating and stirring tank 18 through the first conduit 15 for heating and stirring to obtain a crude lithium carbonate product, then the crude lithium carbonate product is introduced into the second heating and stirring tank 22 through the second conduit 19 for washing, finally the refined lithium carbonate product after washing is introduced into the centrifuge 25 through the third conduit 23 for centrifugation to obtain a finished product, a second water storage tank 24 is fixedly installed at the bottom of the third conduit 23, and a second return pipe 26 is fixedly connected to the left side of the bottom of the second water storage tank 24, one end of a second return pipe 26, which is far away from the second water storage tank 24, is communicated with the first return pipe 4, a third guide pipe 23 is positioned above the centrifuge 25, the bottom of the second water storage tank 24 is in contact with the top of the centrifuge 25, when crude lithium carbonate in the first heating and stirring tank 18 is guided into the second heating and stirring tank 22 through the second guide pipe 19, mother liquor in the first heating and stirring tank 18 is filtered into the first return pipe 4 through a filtering hole 31 at the bottom of the second guide pipe 19, then a water pump 10 on the first return pipe 4 is opened, the mother liquor is guided into the hydrogenation liquid reaction kettle 1 through the water pump 10 and the first return pipe 4 for recycling, when water absorbed by the second heating and stirring tank 22 and refined lithium carbonate pass through the third guide pipe 23, washing water is filtered into the second water storage tank 24 through the filtering hole 31 at the bottom of the third guide pipe 23, and then the washing water is guided into the hydrogenation liquid reaction kettle 1 through the second return pipe 26 and the water pump 10 for recycling, thereby achieving the purposes of high resource recovery rate and lower energy consumption.

Specifically, fixed surface of circulating pipe 5 installs condenser tube 6, and the bottom of circulating pipe 5 is provided with air inlet 7 on the left side that is located fluid-discharge tube 8, and the right-hand member fixed mounting of circulating pipe 5 bottom has circulating pump 9, and when using, the material through circulating pump 9 and circulating pipe 5 in with hydrogenation liquid reation kettle 1 carries out circulation hydrogenation, replaces the agitator in the existing equipment, and stirring strength is big, and the energy consumption is low to the purpose that work efficiency is higher has been reached.

Concretely, the top of precipitation retort 13 is provided with precipitant addition mouth 12, the bottom of precipitation retort 13 is provided with impurity precipitation export 11, add mouthful 12 through the precipitant and add in precipitation retort 13 with precipitant or complexing agent, impurity in the hydrogenation liquid that makes deposits or exists with stable water-soluble complex, then after the hydrogenation liquid after the edulcoration is accomplished is derived, deposit in the precipitation retort 13 is taken out through impurity precipitation export 11, thereby the purpose that work efficiency is higher has been reached.

Specifically, a neutralizer adding port 17 is formed in the top of the first heating and stirring box 18 and located on the right side of the first motor 16, a pure water adding port 21 is formed in the top of the second heating and stirring box 22 and located on the right side of the second motor 20, LIOH is added into the first heating and stirring box 18 through the neutralizer adding port 17 for stirring, so that a crude lithium carbonate product is obtained, and pure water is added into the second heating and stirring box 22 through the pure water adding port 21 for stirring, so that a fine lithium carbonate product is obtained.

Specifically, the output ends of the first motor 16 and the second motor 20 are both fixedly connected with a stirring rotating shaft 27, the bottom ends of the stirring rotating shaft 27 respectively extend into the first heating and stirring box 18 and the second heating and stirring box 22, a plurality of stirring blades 28 which are uniformly arranged are fixedly installed on the surface of the stirring rotating shaft 27, heat-conducting protective covers 29 are fixedly installed on the inner walls of the two sides of the first heating and stirring box 18 and the second heating and stirring box 22, heating wires 30 are respectively arranged on the inner walls of the two sides of the first heating and stirring box 18 and the second heating and stirring box 22 and inside the heat-conducting protective cover 29, the inside of the first heating and stirring box 18 is stirred by the first motor 16, the stirring rotating shaft 27 and the stirring blades 28, meanwhile, the inside of the first heating and stirring box 18 is heated by the heating wires 30, at the moment, the heating wires 30 are protected by the heat-conducting protective cover 29, and damage caused by the, thereby reached the higher purpose of work efficiency, then stirred the inside of second heating agitator tank 22 through second motor 20, stirring pivot 27 and stirring vane 28, heated in second heating agitator tank 22 through heater strip 30 simultaneously, protected heater strip 30 through heat conduction protection casing 29 this moment, avoided heater strip 30 and liquid direct contact to lead to its damage to the higher purpose of work efficiency has been reached.

Specifically, centrifuge 25's inside is provided with centrifuge tank 32, and the left side of centrifuge 25 bottom is provided with the hole 33 that leaks, carries out centrifugal separation to the lithium carbonate essence through centrifuge 25 and centrifuge tank 32, then derives the liquid that separates through the hole 33 that leaks to the purpose that work efficiency is higher has been reached.

Specifically, valves are fixedly mounted on the surfaces of the first return pipe 4, the liquid discharge pipe 8, the first conduit 15, the second return pipe 26, the second conduit 19 and the third conduit 23, and the first return pipe 4, the liquid discharge pipe 8, the first conduit 15, the second return pipe 26, the second conduit 19 and the third conduit 23 are controlled by the valves, so that the valves are more convenient to open and close.

Specifically, the surface of the drain pipe 8, the first guide pipe 15 and the first return pipe 4 are fixedly provided with the water pump 10, and the flow guide of the drain pipe 8, the first guide pipe 15 and the first return pipe 4 is more efficient through the water pump 10, so that the purpose of higher working efficiency is achieved.

Specifically, a plurality of filtering holes 31 are formed in the bottoms of the second conduit 19 and the third conduit 23, the second conduit 19 is communicated with the first water storage tank 14 through the filtering holes 31, the third conduit 23 is communicated with the second water storage tank 24 through the filtering holes 31, when crude lithium carbonate in the first heating stirring tank 18 is guided into the second heating stirring tank 22 through the second conduit 19, mother liquor in the first heating stirring tank 18 is filtered into the first return pipe 4 through the filtering holes 31 in the bottom of the second conduit 19, and when water and fine lithium carbonate in the second heating stirring tank 22 pass through the third conduit 23, washing water is filtered into the second water storage tank 24 through the filtering holes 31 in the bottom of the third conduit 23, so that the purpose of resource recycling is achieved.

Specifically, a plurality of wash port has been seted up on the surface that first pipe 15 is located the inside one side of precipitation retort 13, and first pipe 15 is located the surface of the inside one side of precipitation retort 13 and is located the outside fixed mounting of wash port and has the filter screen, draws water through water pump 10 to precipitation retort 13 inside, and the hydrogenated liquid in precipitation retort 13 is taken out through the wash port this moment, avoids sediment and the complex in precipitation retort 13 to block up the wash port through the filter screen simultaneously.

The working principle is as follows: when in use, a carbonate type lithium source and one or more of pure water, mother liquor and washing water are added into a hydrogenation solution reaction kettle 1 through a feed inlet 3 for hydrogenation reaction, materials in the hydrogenation solution reaction kettle 1 are circularly hydrogenated through a circulating pump 9 and a circulating pipe 5, instead of a stirrer in the existing equipment, the stirring intensity is high, the energy consumption is low, then the hydrogenation solution is introduced into a precipitation reaction tank 13 through a liquid discharge pipe 8 for impurity removal, a precipitator or a complexing agent is added into a precipitation reaction tank 13 through a precipitator adding port 12, so that impurities in the hydrogenation solution are precipitated or exist as stable water-soluble complexes, then the hydrogenation solution after impurity removal is led out, precipitates in the precipitation reaction tank 13 are taken out through an impurity precipitation outlet 11, then the hydrogenation solution after impurity removal is introduced into a first heating stirring tank 18 through a first conduit 15 for heating and stirring to obtain a crude lithium carbonate product, stirring the inside of the first heating and stirring box 18 by the first motor 16, the stirring rotating shaft 27 and the stirring blade 28, heating the inside of the first heating and stirring box 18 by the heating wire 30, adding LIOH into the first heating and stirring box 18 through the neutralizer adding port 17 for stirring to obtain a crude lithium carbonate product, then introducing the crude lithium carbonate product into the second heating and stirring box 22 through the second conduit 19 for washing, adding pure water into the second heating and stirring box 22 through the pure water adding port 21, stirring the inside of the second heating and stirring box 22 by the second motor 20, the stirring rotating shaft 27 and the stirring blade 28, heating the inside of the second heating and stirring box 22 by the heating wire 30 to obtain a refined lithium carbonate product, finally introducing the washed refined lithium carbonate product into the centrifuge 25 through the third conduit 23 for centrifuging, and centrifugally separating the refined lithium carbonate by the centrifuge 25 and the centrifuge box 32, then the separated liquid is led out through the water leakage hole 33, when crude lithium carbonate in the first heating stirring box 18 is led into the second heating stirring box 22 through the second guide pipe 19, the mother liquor in the first heating stirring box 18 is filtered into the first return pipe 4 through the filtering hole 31 at the bottom of the second guide pipe 19, then the water pump 10 on the first return pipe 4 is opened, the mother liquor is led into the hydrogenation reaction kettle 1 through the water pump 10 and the first return pipe 4 for recycling, and when the water and the refined lithium carbonate in the second heating stirring box 22 pass through the third guide pipe 23, the washing water is filtered into the second water storage tank 24 through the filtering hole 31 at the bottom of the third guide pipe 23, and then the washing water is led into the hydrogenation reaction kettle 1 through the second return pipe 26 and the water pump 10 for recycling.

In summary, in the industrial-grade lithium carbonate sedimentation extraction device, the mother liquor in the first heating and stirring tank 18 is filtered into the first return pipe 4 through the filtering hole 31 at the bottom of the second conduit 19, then the water pump 10 on the first return pipe 4 is opened, the mother liquor is introduced into the hydrogenation reaction kettle 1 through the water pump 10 and the first return pipe 4 for recycling, and meanwhile, when the water absorbed in the second heating and stirring tank 22 and the refined lithium carbonate product pass through the third conduit 23, the washing water is filtered into the second water storage tank 24 through the filtering hole 31 at the bottom of the third conduit 23, and then the washing water is introduced into the hydrogenation reaction kettle 1 through the second return pipe 26 and the water pump 10 for recycling, so as to achieve the purposes of high resource recovery rate and lower energy consumption.

And materials in the hydrogenation liquid reaction kettle 1 are circularly hydrogenated through the circulating pump 9 and the circulating pipe 5, so that a stirrer in the existing equipment is replaced, the stirring intensity is high, the energy consumption is low, and the aim of higher working efficiency is fulfilled.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides an extraction element is subsided to industrial grade lithium carbonate, includes hydrogenation liquid reation kettle (1) and centrifuge (25), its characterized in that: centrifuge (25) is located the right side of hydrogenation liquid reation kettle (1), feed inlet (3) have been seted up at the left top of hydrogenation liquid reation kettle (1), the left side of hydrogenation liquid reation kettle (1) is located below fixedly connected with circulating pipe (5) of feed inlet (3), the left one end fixed connection in the bottom of hydrogenation liquid reation kettle (1) is kept away from to circulating pipe (5), the bottom fixedly connected with fluid-discharge tube (8) of circulating pipe (5), the right side of hydrogenation liquid reation kettle (1) is provided with precipitation retort (13), the one end fixed connection in the left top of precipitation retort (13) of circulating pipe (5) is kept away from to fluid-discharge tube (8), bottom fixedly connected with first pipe (15) on precipitation retort (13) right side, the right side of precipitation retort (13) is provided with first heating agitator tank (18), one end of the first pipe (15) far away from the precipitation reaction tank (13) is fixedly connected to the left top of the first heating stirring tank (18), the first heating stirring tank (18) is connected with the precipitation reaction tank (13) through the first pipe (15), the top of the first heating stirring tank (18) is fixedly provided with a first motor (16), the bottom of the first heating stirring tank (18) is fixedly connected with a second pipe (19), the bottom of the second pipe (19) is fixedly provided with a first water storage tank (14), the left side of the bottom of the first water storage tank (14) is fixedly connected with a first return pipe (4), one end of the first return pipe (4) far away from the first water storage tank (14) is fixedly connected to the left side of the hydrogenation reaction kettle (1), the right side of the first heating stirring tank (18) is provided with a second heating stirring tank (22), one end of the second conduit (19) far away from the first heating and stirring box (18) is fixedly arranged at the top of the left side of the second heating and stirring box (22), the first heating stirring box (18) is connected with the second heating stirring box (22) through a second conduit (19), a second motor (20) is fixedly arranged at the top of the second heating and stirring box (22), the bottom of the second heating and stirring box (22) is fixedly connected with a third conduit (23), a second water storage tank (24) is fixedly arranged at the bottom of the third conduit (23), a second return pipe (26) is fixedly connected to the left side of the bottom of the second water storage tank (24), one end of the second return pipe (26) far away from the second water storage tank (24) is communicated with the first return pipe (4), the third conduit (23) is located above the centrifuge (25), and the bottom of the second water storage tank (24) is in contact with the top of the centrifuge (25).

2. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: the surface fixed mounting of circulating pipe (5) has cooling water pipe (6), the bottom of circulating pipe (5) is located the left side of fluid-discharge tube (8) and is provided with air inlet (7), the right-hand member fixed mounting in circulating pipe (5) bottom has circulating pump (9).

3. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: the top of the precipitation reaction tank (13) is provided with a precipitant addition port (12), and the bottom of the precipitation reaction tank (13) is provided with an impurity precipitation outlet (11).

4. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: and a neutralizer adding port (17) is formed in the top of the first heating stirring box (18) and positioned on the right side of the first motor (16), and a pure water adding port (21) is formed in the top of the second heating stirring box (22) and positioned on the right side of the second motor (20).

5. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: the equal fixedly connected with stirring pivot (27) of output of first motor (16) and second motor (20), the bottom of stirring pivot (27) extends to the inside of first heating agitator tank (18) and second heating agitator tank (22) respectively, the fixed surface of stirring pivot (27) installs a plurality of align to grid's stirring vane (28), the equal fixed mounting of inner wall of first heating agitator tank (18) and second heating agitator tank (22) both sides has heat conduction protection casing (29), the inside that first heating agitator tank (18) and second heating agitator tank (22) both sides are located heat conduction protection casing (29) all is provided with heater strip (30).

6. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: the inside of centrifuge (25) is provided with centrifugal box (32), the left side of centrifuge (25) bottom is provided with hole (33) that leaks.

7. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: and valves are fixedly arranged on the surfaces of the first return pipe (4), the liquid discharge pipe (8), the first guide pipe (15), the second return pipe (26), the second guide pipe (19) and the third guide pipe (23).

8. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: and the surfaces of the liquid discharge pipe (8), the first guide pipe (15) and the first return pipe (4) are fixedly provided with a water pump (10).

9. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: the bottom of the second guide pipe (19) and the bottom of the third guide pipe (23) are respectively provided with a plurality of filtering holes (31), the second guide pipe (19) is communicated with the first water storage tank (14) through the filtering holes (31), and the third guide pipe (23) is communicated with the second water storage tank (24) through the filtering holes (31).

10. The technical grade lithium carbonate sedimentation extraction device according to claim 1, wherein: a plurality of drain holes are formed in the surface of one side, located inside the precipitation reaction tank (13), of the first guide pipe (15), and a filter screen is fixedly mounted on the surface, located on one side inside the precipitation reaction tank (13), of the first guide pipe (15) and located on the outer side of the drain holes.

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