Intelligent continuous impurity removal and precipitation device for lithium cobalt oxide

Abstract

The invention relates to the field of rare earth metal extraction, and discloses a lithium cobalt oxide intelligent continuous impurity removal and precipitation device which comprises a mother liquor pool, a manual valve is arranged on the right side of the mother liquor pool, a mortar pump is fixedly connected to the end, away from the mother liquor pool, of the manual valve, and an electromagnetic flowmeter is arranged at the position of a connecting pipeline of the mortar pump. And the tail end of the electromagnetic flowmeter connecting pipeline is fixedly connected with a mixing and depositing tank. Through continuous process design and intelligent control, the problem that the efficiency of a traditional intermittent process is low is thoroughly solved, mother liquor is stably conveyed at the flow of 416 m / h, three sets of mixed precipitation tanks connected in series operate according to the gradient logic of 120 rpm high-speed stirring and 40 rpm low-speed stirring, and real-time feedback of a PH meter and an electromagnetic flowmeter is matched, so that the removal rate of Al and Fe reaches 98% or above, and the cobalt recovery rate is increased to 95% or above; the single-batch treatment period is shortened to be within 2 hours from 6-8 hours, the capacity for producing 10000 m mother liquor per day stably reaches the standard, the production efficiency is improved by 30% compared with that of a traditional process, and the large-scale continuous production requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rare earth metal extraction, in particular to a lithium cobalt oxide intelligent continuous impurity removal and precipitation device. BACKGROUND

[0002] As a core positive electrode material of lithium ion batteries, the purity of lithium cobalt oxide directly determines the energy density and cycle life of the battery, and impurity removal and precipitation of the mother liquor is a key link in determining the purity of lithium cobalt oxide produced by the wet process. Referring to the current situation of "low intelligence level of rare earth mines, mostly original production process" mentioned in the "Mine Continuous Precipitation Design Book Universal Edition", the lithium cobalt oxide industry also faces the problem of mismatch between large-scale production and traditional process: with the surge in demand for lithium battery materials, the demand for 10000m³-level lithium cobalt oxide mother liquor treatment has become prominent, but the traditional process still mainly relies on "pool intermittent reaction", with a single batch processing cycle of 6-8 hours, which cannot meet the needs of continuous and high-load production, and intelligent devices that can adapt to large-scale fluid reactions are needed to fill the technical gap.

[0003] However, the traditional lithium cobalt oxide mother liquor impurity removal and precipitation process has multiple technical bottlenecks: first, the control precision is low, the PH value adjustment relies on manual sampling detection, and the dosage of reagents is set by experience, which easily leads to incomplete removal of impurities such as Al³⁺ and Fe³⁺ (residual amount exceeding 0.1g / L) or excessive precipitation of Co²⁺, with a cobalt recovery rate of only 93%-94%, which is highly similar to the problem of "rough data measurement by manual measurement in rare earth process" in the "Mine Continuous Precipitation Design Book Universal Edition"; second, the mixing reaction efficiency is low, and a single stirring tank is mostly used, lacking gradient reaction design, the mother liquor and reagents are not evenly mixed, and the alum flower is not fully formed, making it difficult to separate; third, the equipment is seriously scaled, the inner wall of the reaction tank is easily attached with calcium and magnesium precipitates, frequent shutdown for cleaning is required, and the effective operation time of the equipment is less than 85%, making it difficult to maintain stable production. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a lithium cobalt oxide intelligent continuous impurity removal and precipitation device, which solves the problem of low control precision and PH value adjustment relying on manual sampling detection.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: A lithium cobalt oxide intelligent continuous impurity removal and precipitation device, comprising a mother liquor tank, a manual valve is arranged on the right side of the mother liquor tank, a mortar pump is fixedly connected to the end of the manual valve away from the mother liquor tank, an electromagnetic flowmeter is arranged at the connecting pipeline of the mortar pump, a mixed precipitation tank is fixedly connected to the end of the electromagnetic flowmeter connecting pipeline, a quantitative feeder pump is fixedly connected to the upper surface of the electromagnetic flowmeter through a connecting pipeline, a one-way valve is arranged at the electromagnetic flowmeter and quantitative feeder pump connecting pipeline, a plurality of mixed precipitation tanks are arranged, the mixed precipitation tanks are connected through pipelines, the end of the mixed precipitation tank is connected with a thickener tank a through a pipeline, a precipitant preparation tank is fixedly connected to the end of the quantitative feeder pump away from the one-way valve, a filter press is connected to the bottom end of the thickener tank a through a pipeline, a pH meter is arranged at the discharge end of the mixed precipitation tank, a preparation agent supply pipe is fixedly connected to the outer wall of the precipitant preparation tank, the end of the preparation agent supply pipe away from the precipitant preparation tank is fixedly connected with a thickener tank b, and the top end of the thickener tank b is connected with a supernatant tank through a pipeline.

[0006] Preferably, an inner wall of the top end of the mixed precipitation tank is provided with a mixing and stirring mechanism.

[0007] The mixing and stirring mechanism is used for fully mixing the preparation agent and the mother liquor added into the mixed precipitation tank.

[0008] Preferably, the mixing and stirring mechanism comprises a support, an inner side wall of the top end of the support is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a gear a, an outer wall of the gear a is engaged with a gear b, a rotating sleeve is penetrated and fixedly connected at the central shaft of the gear b, a plurality of connecting seats are fixedly connected to the outer arc surface of the rotating sleeve, an inner side wall of the connecting seat is penetrated and slidingly connected with a stirring rod, the connecting rods are fixedly connected between the stirring rods, a stirring blade is fixedly connected to the outer side wall of the connecting rod, and a scraper is fixedly connected to the end of the stirring blade away from the connecting rod.

[0009] Preferably, an inner side wall of the top end of the rotating sleeve is movably connected with a rotating plate, the bottom end of the rotating plate is elastically connected with a fixed plate through a return spring, an inner wall of the fixed plate is penetrated and slidingly connected with a vertical rod, the top end of the vertical rod is fixedly connected with a contact ball, a guide block is fixedly connected to the side wall of the top end of the vertical rod, and a hinged rod is hinged to the inner wall of the bottom end of the vertical rod.

[0010] Preferably, the bottom end of the precipitant preparation tank is connected with the connecting pipelines between the mixed precipitation tanks through two groups of connecting pipelines.

[0011] Preferably, the support is fixedly connected to the upper surface of the mixing and precipitation tank, the gear a is rotatably connected to the upper surface of the mixing and precipitation tank, and the gear b is rotatably connected to the center of the upper surface of the mixing and precipitation tank.

[0012] Preferably, the rotating sleeve is penetratingly and rotatably connected to the inner wall of the top end of the mixing and precipitation tank, and the stirring rod is penetratingly and slidingly connected to the inner wall of the rotating sleeve.

[0013] Preferably, the stirring rod is penetratingly and slidingly connected to the inner wall of the connecting seat, the connecting shaft rod is penetratingly and slidingly connected to the surface of the plurality of connecting seats, and the scraper is in contact with the inner side wall of the mixing and precipitation tank at the end away from the stirring blade.

[0014] Preferably, the rotating plate is slidingly connected to the inner side wall of the top end of the rotating sleeve, one end of the reset spring is fixedly connected to the lower surface of the rotating plate, the other end of the reset spring is fixedly connected to the upper surface of the fixed plate, and the spherical surface at the top end of the contact ball is in contact with the bottom end of the contact ring seat.

[0015] Preferably, the fixed plate is fixedly connected to the inner side wall of the rotating sleeve, the inner side wall of the rotating sleeve is provided with a guide groove, the guide block is slidingly connected to the inner side wall of the rotating sleeve, and the hinged rod is hinged to the inner side wall of the rear end of the stirring rod at the end away from the vertical rod.

[0016] The present application provides a lithium cobalt oxide intelligent continuous impurity removal and precipitation device.

[0017] 1. The present application solves the problem of low efficiency of traditional batch process through continuous process design and intelligent control: the mother liquor is stably conveyed at a flow rate of 416 m³ / h, three groups of series-connected mixing and precipitation tanks are operated at a gradient logic of fast stirring at 120 rpm and slow stirring at 40 rpm, and real-time feedback of a pH meter and an electromagnetic flowmeter is provided, so that the removal rate of Al³⁺ and Fe³⁺ is more than 98%, the cobalt recovery rate is increased to more than 95%, the processing period of a single batch is shortened from 6-8 hours to 2 hours, the production capacity of 10000 m³ of mother liquor per day is stable and meets the standard, the production efficiency is increased by 30% compared with the traditional process, and the demand for large-scale continuous production is met.

[0018] 2. The purified clear liquid stored in the supernatant pool is reused to the precipitant preparation tank through the preparation agent supply pipe, the water resource utilization rate is increased by 30%, 100,000 m³ of water is saved per year, the dosage of the medicament is accurately controlled by the quantitative feeder pump, the gradient reaction design is combined, the consumption of the medicament is saved by 10%, and the purchase cost is reduced by 500,000 yuan per year; the equipment occupies only 15 mu, the construction investment is 1500-1700 yuan, the core equipment can be disassembled and migrated, and is repeatedly used in multiple factory areas, so that the conversion cost is further reduced.

[0019] 3、The present application adopts the design of rotary and telescopic composite stirring through the mixing stirring mechanism, cooperates with the flow guide air slot on the surface of the stirring blade, and the contact area between the mother liquor and the precipitant is increased by more than 40% compared with the traditional single rotary stirring, the mixing uniformity is significantly improved, and meanwhile, the scraper of the mechanism is in close contact with the inner wall of the mixing and precipitation tank, and can clean the calcium and magnesium precipitates, impurity residues and other scaling substances attached to the tank wall in real time during the stirring process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall working plan view of the present application;

[0021] Figure 2 It is the partial sectional view schematic diagram of the mixing and precipitation tank of the present application;

[0022] Figure 3 It is the three-dimensional schematic diagram of the mixing stirring mechanism of the present application;

[0023] Figure 4 It is the partial sectional view schematic diagram of the rotating sleeve of the present application;

[0024] Figure 5 It is the partial sectional view schematic diagram of the rotating sleeve of the present application and the separated state diagram of the connecting seat.

[0025] Among them, 1, mother liquor pool;2, manual valve;3, mortar pump;4, electromagnetic flowmeter;5, check valve;6, quantitative feeder pump;7, precipitant preparation tank;8, PH meter;9, mixing and precipitation tank;10, filter press;11, preparation agent supply pipe;12, supernatant pool;13, mixing and stirring mechanism;1301, support;1302, motor;1303, gear a;1304, contact ring seat;1305, gear b;1306, rotating sleeve;1307, connecting seat;1308, return spring;1309, rotating plate;1310, vertical rod;1311, contact ball;1312, hinged rod;1313, stirring rod;1314, connecting shaft;1315, stirring blade;1316, scraper;1317, fixed plate;1318, guide block;14, thickener tank b;15, thickener tank a. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] Embodiment:

[0028] Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 5The embodiment of the present application provides a kind of lithium cobaltate intelligent continuous impurity removal and precipitation device, including mother liquor pool 1, mother liquor pool 1 volume 1800m 3, it is welded with Q235B steel plate and inner wall is sprayed epoxy resin anticorrosion, for storing the lithium cobaltate crude mother liquor containing Fe 3+, Al 3+, Ca 2+ And other impurities, in-pool is equipped with on-line liquid level sensor to real-time feedback inventory, the right side of mother liquor pool 1 is provided with manual valve 2, manual valve 2 is type DN200, material 316L stainless steel, as emergency shutdown component when automatic system fails, the end of manual valve 2 away from mother liquor pool 1 It is fixedly connected with mortar pump 3, mortar pump 3 is used as horizontal centrifugal pump, power 55kW, lift 60m, material is acid-resistant hastelloy, flow 416m 3 / h to match 10000m 3 Daily production processing needs, pump body is equipped with temperature, vibration sensor, the connecting pipeline of mortar pump 3 is provided with electromagnetic flowmeter 4, by setting up electromagnetic flowmeter 4 measurement range 0-500m 3 / h, accuracy ±0.5%, material 316L stainless steel, real-time acquisition flow data and transmission to intelligent control unit, the end of electromagnetic flowmeter 4 connecting pipeline is fixedly connected with mixed precipitation tank 9, the upper surface of electromagnetic flowmeter 4 is fixedly connected with quantitative feeder pump 6 by connecting pipeline, by setting up quantitative feeder pump 6, and using plunger type metering pump, flow range 0-50m 3 / h, accuracy ±1%, is equipped with variable frequency motor to link adjustment dosage.

[0029] Specifically, the electromagnetic flowmeter 4 is provided with a one-way valve 5 at the connecting pipe of the quantitative feed pump 6, the one-way valve 5 is of DN100 type and made of 316L stainless steel, which prevents the precipitant from flowing back to the mother liquor pipe. The mixed precipitation tank 9 is provided with multiple groups, and the multiple groups of mixed precipitation tanks 9 are connected through pipes. Usually, three groups are connected in series, the rotating speed of the front group is 120 rpm, the G value is 300 s-1, and the residence time is 20 min to promote the formation of impurity flocculation, the rotating speed of the rear group is 40 rpm, the G value is 50 s-1, and the residence time is 30 min to avoid the breakage of flocculation, and the end of the mixed precipitation tank 9 is connected with the thickener tank a 15 through a pipe. The thickener tank a 15 and the thickener tank b 14 are both of 4 m in diameter and 8 m in height, made of Q235B+epoxy resin corrosion resistant material, and are provided with a central transmission mud scraper to realize the solid-liquid separation of the reaction liquid. The quantitative feed pump 6 is fixedly connected with the precipitant preparation tank 7 at the end away from the one-way valve 5. The precipitant preparation tank 7 is provided to prepare a 10-15% concentration of precipitant solution, has a volume of 20 m³, is made of 316L stainless steel, and is provided with a propeller stirring paddle in the tank with a rotating speed of 60 rpm and a power of 5.5 kW. The bottom end of the precipitant preparation tank 7 is connected with the connecting pipes between the multiple groups of mixed precipitation tanks 9 through two groups of connecting pipes, and the two groups of pipes correspond to the impurity removal stage and the precipitation stage respectively. The front group adds 70% precipitant to remove Al³⁺ and Fe³⁺, and the rear group adds 30% precipitant to ensure complete precipitation of Co²⁺. The bottom end of the thickener tank a 15 is connected with the filter press 10 through a pipe. The filter press 10 is a chamber filter press with a filtering area of 200 m², a filtering pressure of 0.6 MPa, and a power of 15 kW, which is used to dewater the underflow to a water content of less than 20%. The discharge end of the multiple groups of mixed precipitation tanks 9 is provided with a pH meter 8. The pH meter 8 is provided with a polytetrafluoroethylene probe with a measuring range of 0-14 and an accuracy of ±0.01, which is used to monitor the pH value in real time to stabilize the reaction interval. The outer wall of the precipitant preparation tank 7 is fixedly connected with the preparation agent supply pipe 11. The preparation agent supply pipe 11 is of DN150 pipe diameter and made of 316L stainless steel, which is used to transport dilution medium to realize water resource recycling. The end of the preparation agent supply pipe 11 away from the precipitant preparation tank 7 is fixedly connected with the thickener tank b 14. The top end of the thickener tank b 14 is connected with the supernatant tank 12 through a pipe. The supernatant tank 12 has a volume of 500 m³ and is made of Q235B+epoxy resin corrosion resistant material, which is used to store supernatant and realize water resource closed loop recycling.

[0030] Further, the inner wall of the top end of the mixed precipitation tank 9 is provided with a mixed stirring mechanism 13. The mixed stirring mechanism 13 is used to fully mix the precipitant and the mother liquor added into the mixed precipitation tank 9.

[0031] Specifically, the mixing and stirring mechanism 13 comprises a support 1301 fixedly connected to the upper surface of the mixing and precipitation tank 9, a gear a 1303 rotatably connected to the upper surface of the mixing and precipitation tank 9, the gear a 1303 being able to rotate only in the circumferential direction of the upper surface of the mixing and precipitation tank 9, a gear b 1305 rotatably connected to the center of the upper surface of the mixing and precipitation tank 9, an inner side wall at the top end of the support 1301 being fixedly connected with a motor 1302, the output shaft of the motor 1302 being fixedly connected with the gear a 1303, the motor 1302 being started to drive the gear a 1303 to rotate, thereby synchronously rotating the gear b 1305, the outer wall of the gear a 1303 being engaged with the gear b 1305, the central shaft of the gear b 1305 being penetrated and fixedly connected with a rotating sleeve 1306, a cavity matching the rotating sleeve 1306 being formed in the center of the gear b 1305, the gear b 1305 being driven to rotate by the gear a 1303 to synchronously rotate the gear b 1305 and the rotating sleeve 1306.

[0032] The outer arc surface of the rotating sleeve 1306 is fixedly connected with a plurality of connecting seats 1307, the inner side walls of the plurality of connecting seats 1307 being penetrated and slidably connected with stirring rods 1313, the stirring rods 1313 being able to reciprocally slide in the inner walls of the connecting seats 1307 to be opened, thereby fully stirring and mixing the mother liquor in the mixing and precipitation tank 9, the rotating sleeve 1306 being penetrated and rotatably connected to the inner wall at the top end of the mixing and precipitation tank 9, the stirring rods 1313 being penetrated and slidably connected to the inner wall of the rotating sleeve 1306, the plurality of stirring rods 1313 being fixedly connected with a connecting shaft 1314, the stirring rods 1313 being penetrated and slidably connected to the inner walls of the plurality of connecting seats 1307, the connecting shaft 1314 being penetrated and slidably connected to the surfaces of the plurality of connecting seats 1307, the connecting shaft 1314 being connected between the plurality of stirring rods 1313 to synchronously move the plurality of stirring rods 1313, the end of the scraper 1316 away from the stirring blade 1315 being in contact with the inner side wall of the mixing and precipitation tank 9, the outer side wall of the connecting shaft 1314 being fixedly connected with the stirring blade 1315, a plurality of flow guide grooves being formed in the surface of the stirring blade 1315 to fully mix the coagulant with the mother liquor, the end of the stirring blade 1315 away from the connecting shaft 1314 being fixedly connected with the scraper 1316, the connecting shaft 1314 being reciprocally moved to synchronously move the stirring blade 1315 and the scraper 1316 outward, thereby fully mixing and stirring the impurities adsorbed on the inner wall of the mixing and precipitation tank 9.

[0033] Further, the inner side wall of the top end of the rotating sleeve 1306 is rotationally connected with a rotating plate 1309, the rotating plate 1309 can only move up and down on the inner side wall of the top end of the rotating sleeve 1306, the bottom end of the rotating plate 1309 is elastically connected with a fixed plate 1317 through a return spring 1308, one end of the return spring 1308 is fixedly connected to the lower surface of the rotating plate 1309, the other end of the return spring 1308 is fixedly connected to the upper surface of the fixed plate 1317, the return spring 1308 serves to automatically reset the position of the contact ball 1311 after the contact ball 1311 is lowered and drives the vertical rod 1310 and the rotating plate 1309 to be lowered, the inner wall of the fixed plate 1317 penetrates and slidably connects with the vertical rod 1310, the fixed plate 1317 is arranged to guide the descent of the vertical rod 1310, and also elastically supports the return spring 1308, the top end of the vertical rod 1310 is fixedly connected with the contact ball 1311, the spherical surface of the top end of the contact ball 1311 is in contact with the bottom end of the contact ring seat 1304, the contact ring seat 1304 is composed of a group of semi-ring-shaped trapezoidal increasing height and connecting support frames, the side wall of the top end of the vertical rod 1310 is fixedly connected with a guide block 1318,

[0034] Specifically, the inner wall of the bottom end of the vertical rod 1310 is hingedly connected with a hinge rod 1312, the fixed plate 1317 is fixedly connected to the inner side wall of the rotating sleeve 1306, when the rotating sleeve 1306 rotates, the fixed plate 1317 rotates synchronously, the inner side wall of the rotating sleeve 1306 is provided with a guide groove, the guide block 1318 is slidably connected to the inner side wall of the rotating sleeve 1306, by providing the guide groove in the interior of the rotating sleeve 1306, the movement of the guide block 1318 is guided, and the descent of the vertical rod 1310 is also guided, the end of the hinge rod 1312 away from the vertical rod 1310 is hingedly connected to the inner side wall of the rear end of the stirring rod 1313, when the contact ball 1311 at the top end of the vertical rod 1310 is pressed to descend by the contact ring seat 1304, the hinge rod 1312 pushes the stirring rod 1313 to periodically move outward on the inner wall of the rotating sleeve 1306 and the connecting seat 1307, so as to achieve reciprocating stirring, so that the mixing effect of the internal mother liquor is better.

[0035] Work away: after the device is started, the lithium cobalt oxide crude mother liquor stored in the mother liquor pool 1 enters the mortar pump 3 through the manual valve 2 under the premise of real-time feedback of the inventory of the liquid level sensor. The mortar pump adopts horizontal centrifugal pump design to stably deliver the mother liquor at a flow rate of 416 m³ / h. The pump body is equipped with temperature and vibration sensors to monitor the operating state in real time and trigger a stop alarm in case of abnormality. When the mother liquor flows through the electromagnetic flowmeter 4, the flow data is transmitted to the PLC+SCADA intelligent control unit in real time. The control unit adjusts the dosage of the reagent feeding pump 6 according to the data feedback; at the same time, the one-way valve 5 between the electromagnetic flowmeter 4 and the quantitative feeding pump 6 prevents the backflow of the precipitant to pollute the mother liquor, ensuring that the precipitant is accurately injected into the mother liquor pipeline according to the flow rate and demand, laying a dosage foundation for the subsequent reaction

[0036] The mother liquor carrying the precise dosage of the precipitant enters a plurality of mixed precipitation tanks 9 connected in series, and the mixing and stirring mechanism 13 starts to work at the same time: the motor 1302 drives the gear a1303 to rotate, the meshing gear b1305 drives the rotating sleeve 1306 to rotate synchronously; when the rotating sleeve 1306 rotates, the contact ball 1311 at the top end of the rotating sleeve 1306 rises and falls periodically along the contact ring seat 1304, and through the vertical rod 1310, the articulated rod 1312 pushes the stirring rod 1313 to reciprocate in the connecting seat 1307, synchronously linking the shaft rod 1314 and the stirring blade 1315 to realize rotary and telescopic stirring, and the scraper 1316 cleans the impurities adhering to the tank wall in real time. In this process, the three groups of mixed precipitation tanks operate according to the gradient reaction logic: the front group of tanks is stirred at a speed of 120 rpm and a G value of 300 s⁻¹ for 20 min to promote the reaction of Al³⁺, Fe³⁺ and 70% of the precipitant to form small flocs, and the rear group of tanks is stirred at a speed of 40 rpm and a G value of 50 s⁻¹ for 30 min to avoid the breakage of the flocs and promote the reaction of Co²⁺ and the remaining 30% of the precipitant; at the same time, the pH meter 8 at the discharge end of each tank monitors the pH value of the reaction liquid in real time and feeds back to the intelligent control unit to stabilize the pH value in the range of 8.5-9.5, ensuring the directional removal of impurities and the complete precipitation of cobalt ions.

[0037] The mixed liquid after the reaction enters the thickener a15, and solid-liquid separation is realized by gravity sedimentation: the clear liquid has a solid content of <0.1%, and the underflow is a mixture of cobalt precipitate and impurity residue. The underflow is transported to the filter press 10 through the pipeline, and the filter cake has a water content of <20% after dewatering, and the filtrate is returned to the mother liquor pool 1 for reprocessing to improve the recovery rate; the clear liquid of the thickener a15 and the washing water of the filter press 10 are jointly fed into the thickener b14 for secondary purification, and the supernatant after purification is stored in the supernatant pool 12, part of which is transported to the precipitant preparation tank 7 through the preparation agent supply pipe 11 as a dilution medium, replacing fresh water to realize water resource closed loop circulation, and the other part is used for upstream ore leaching solution preparation, finally completing the continuous process closed loop of mother liquor treatment, product output and resource recycling.

[0038] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A lithium cobalt oxide intelligent continuous impurity removal and precipitation device, comprising a mother liquor tank (1), characterized in that, The right side of the mother liquor tank (1) is provided with a manual valve (2), one end of the manual valve (2) away from the mother liquor tank (1) is fixedly connected with a mortar pump (3), the connecting pipeline of the mortar pump (3) is provided with an electromagnetic flowmeter (4), the tail end of the electromagnetic flowmeter (4) connecting pipeline is fixedly connected with a mixed sedimentation tank (9), the upper surface of the electromagnetic flowmeter (4) is fixedly connected with a quantitative feeder pump (6) through a connecting pipeline, the electromagnetic flowmeter (4) and the quantitative feeder pump (6) are provided with a check valve (5) at the connecting pipeline, the mixed sedimentation tank (9) is provided with a plurality of groups, a plurality of groups of the mixed sedimentation tank (9) are connected through pipelines, the tail end of the mixed sedimentation tank (9) is connected with a thickener tank a (15) through a pipeline, one end of the quantitative feeder pump (6) away from the check valve (5) is fixedly connected with a precipitant preparation tank (7), the bottom end of the thickener tank a (15) is connected with a filter press (10) through a pipeline, the discharge end of the mixed sedimentation tank (9) is provided with a PH meter (8), the outer wall of the precipitant preparation tank (7) is fixedly connected with a preparation agent supply pipe (11), one end of the preparation agent supply pipe (11) away from the precipitant preparation tank (7) is fixedly connected with a thickener tank b (14), the top end of the thickener tank b (14) is connected with a supernatant tank (12) through a pipeline.

2. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 1, characterized in that, The inner wall of the top end of the mixed sedimentation tank (9) is provided with a mixing and stirring mechanism (13); The mixing and stirring mechanism (13) is used for fully mixing the preparation agent and the mother liquor added into the mixed sedimentation tank (9).

3. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 2, characterized in that, The mixing and stirring mechanism (13) comprises a support (1301), the inner side wall of the top end of the support (1301) is fixedly connected with a motor (1302), the output shaft of the motor (1302) is fixedly connected with a gear a (1303), the outer wall of the gear a (1303) is engaged with a gear b (1305), the central shaft of the gear b (1305) penetrates and is fixedly connected with a rotating sleeve (1306), the outer arc surface of the rotating sleeve (1306) is fixedly connected with a plurality of connecting seats (1307), the inner side wall of the plurality of connecting seats (1307) penetrates and is slidingly connected with a stirring rod (1313), the plurality of stirring rods (1313) are fixedly connected with a connecting shaft (1314), the outer side wall of the connecting shaft (1314) is fixedly connected with a stirring blade (1315), one end of the stirring blade (1315) away from the connecting shaft (1314) is fixedly connected with a scraper (1316).

4. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 3, characterized in that, The inner side wall of the top end of the rotating sleeve (1306) movably connects with a rotating plate (1309), the bottom end of the rotating plate (1309) elastically connects with a fixed plate (1317) through a reset spring (1308), the inner wall of the fixed plate (1317) penetrates and slidably connects with a vertical rod (1310), the top end of the vertical rod (1310) fixedly connects with a contact ball (1311), the side wall of the top end of the vertical rod (1310) fixedly connects with a guide block (1318), and the inner wall of the bottom end of the vertical rod (1310) is hingedly connected with a hinged rod (1312).

5. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 2, characterized in that, The bottom end of the precipitator preparation tank (7) is connected with the connecting pipelines between the groups of mixed precipitation tanks (9) through two groups of connecting pipelines.

6. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 3, characterized in that, The support (1301) is fixedly connected to the upper surface of the mixed precipitation tank (9), the gear a (1303) is rotatably connected to the upper surface of the mixed precipitation tank (9), and the gear b (1305) is rotatably connected to the center of the upper surface of the mixed precipitation tank (9).

7. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 3, characterized in that, The rotating sleeve (1306) penetrates and rotatably connects to the inner wall of the top end of the mixed precipitation tank (9), and the stirring rod (1313) penetrates and slidably connects to the inner wall of the rotating sleeve (1306).

8. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 4, characterized in that, The stirring rod (1313) penetrates and slidably connects to the inner wall of the connecting seat (1307), the connecting shaft rod (1314) penetrates and slidably connects to the surface of the groups of connecting seats (1307), and the scraper (1316) away from the stirring blade (1315) is in contact with the inner side wall of the mixed precipitation tank (9).

9. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 4, characterized in that, The rotating plate (1309) slidably connects to the inner side wall of the top end of the rotating sleeve (1306), one end of the reset spring (1308) is fixedly connected to the lower surface of the rotating plate (1309), the other end of the reset spring (1308) is fixedly connected to the upper surface of the fixed plate (1317), and the spherical surface of the top end of the contact ball (1311) is in contact with the bottom end of the contact ring seat (1304).

10. The lithium cobalt oxide intelligent continuous impurity removal and precipitation device according to claim 4, characterized in that, The fixed plate (1317) is fixedly connected to the inner side wall of the rotating sleeve (1306), the inner side wall of the rotating sleeve (1306) is provided with a guide groove, the guide block (1318) slidably connects to the inner side wall of the rotating sleeve (1306), and the end of the hinged rod (1312) away from the vertical rod (1310) is hingedly connected to the inner side wall of the rear end of the stirring rod (1313).

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