CN110980778A - Lithium carbonate impurity removing method and device - Google Patents
Lithium carbonate impurity removing method and device Download PDFInfo
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- CN110980778A CN110980778A CN201911369261.XA CN201911369261A CN110980778A CN 110980778 A CN110980778 A CN 110980778A CN 201911369261 A CN201911369261 A CN 201911369261A CN 110980778 A CN110980778 A CN 110980778A
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- 239000012535 impurity Substances 0.000 title claims abstract description 75
- 229910052808 lithium carbonate Inorganic materials 0.000 title claims abstract description 27
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 75
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- 238000005192 partition Methods 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims description 22
- 230000009471 action Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/08—Carbonates; Bicarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
- B01D36/006—Purge means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of lithium carbonate, and discloses a lithium carbonate impurity removing device which comprises a reaction cavity, wherein a fixed laminate is fixedly connected to the inner wall of the reaction cavity, a fixed partition plate is fixedly connected to the bottom end of the inner wall of the reaction cavity, a temperature regulator is fixedly installed at the top of the fixed partition plate, a supporting rod is fixedly connected to the top of the fixed partition plate and positioned on the right side of the temperature regulator, a temperature sensor is fixedly installed at the top of the fixed partition plate and positioned on the right side of the supporting rod, a bearing seat is fixedly connected to one end, far away from the fixed partition plate, of the supporting rod, a motor is fixedly installed at the top of the reaction cavity, and a movable rod. According to the lithium carbonate impurity removing method and device, the reaction liquid can be collected to the center through the inclined plane design at the top of the fixed laminate, the flowing speed of the reaction liquid is improved, the impurity removing efficiency is increased, and meanwhile blockage and mixing can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of lithium carbonate, in particular to a method and a device for removing impurities of lithium carbonate.
Background
Lithium carbonate, an inorganic compound of the formula Li2CO3Is colorless monoclinic crystal or white powder, has a density of 2.11g/cm and a melting point of 618 ℃ (1.013X 10)5Pa), is soluble in dilute acid, slightly soluble in water, has higher solubility in cold water than hot water, is insoluble in alcohol and acetone, and can be used for preparing ceramicsPorcelain, medicine, catalyst, etc., and is commonly used as a raw material of a lithium ion battery.
After the lithium sulfate solution is subjected to alkalization calcium removal operation, hydroxide or carbonate precipitates of insoluble impurities are required to be separated from the solution, and the formed hydroxide precipitates are colloidal substances, so that when the filtration pressure difference is increased, pore passages among particles can be narrowed, the phenomenon that the channels are blocked due to the excessively fine particles, the filtration speed is slow or the particles are mixed and the like sometimes occurs, and the separation effect is poor, so that the method and the device for removing the lithium carbonate impurities are provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a lithium carbonate impurity removing method and a lithium carbonate impurity removing device, which have the advantages of multi-stage impurity removal and high impurity removal efficiency, and solve the problems that due to the fact that formed hydroxide is precipitated into colloidal substances, when the filtering pressure difference is increased, pore channels among particles are possibly narrowed, the channels are sometimes blocked due to the fact that the particles are too fine, the filtering speed is low, the particles are mixed, and the like, and the separation effect is poor.
(II) technical scheme
In order to realize the multi-stage impurity removal and improve the impurity removal efficiency, the invention provides the following technical scheme: the lithium carbonate impurity removing device comprises a reaction chamber, wherein a fixed layer plate is fixedly connected to the inner wall of the reaction chamber, a fixed baffle plate is fixedly connected to the bottom end of the inner wall of the reaction chamber, a temperature regulator is fixedly mounted at the top of the fixed baffle plate, a supporting rod is fixedly connected to the top of the fixed baffle plate and positioned on the right side of the temperature regulator, a temperature sensor is fixedly mounted at the top of the fixed baffle plate and positioned on the right side of the supporting rod, a bearing seat is fixedly connected to one end, away from the fixed baffle plate, of the supporting rod, a motor is fixedly mounted at the top of the reaction chamber, a movable rod is fixedly connected to the outside of a motor driving shaft, a threaded sleeve is fixedly connected to the outside of the movable rod, a filter frame is fixedly connected to the outside of the threaded sleeve, a top cover, the top threaded connection of top cap has the set screw, the inside fixedly connected with sealing washer on reaction chamber left side top, the inside fixedly connected with feeding pipe of sealing washer, the inner chamber diapire fixedly connected with bottom plate of reaction chamber, the bottom fixedly connected with discharging pipe of reaction chamber, two one side fixed mounting that discharging pipe is relative has the edulcoration subassembly, the edulcoration subassembly includes adjustable shelf, mount, inner support frame, filter screen and bolt, the back fixedly connected with mount of adjustable shelf, the back of adjustable shelf just is located the inside fixedly connected with inner support frame of mount, inner support frame's inside fixed mounting has the filter screen.
Preferably, the number of the fixed layer plates is three, the three fixed layer plates are distributed on the inner wall of the reaction chamber at equal intervals, the tops of the fixed layer plates are inclined planes, material passing holes are formed in the bottoms of the fixed layer plates, and the movable frame is fixedly connected with the fixed frame through bolts.
Preferably, the fixed partition plate is a circular plate, round through holes are formed in the top of the fixed partition plate at equal intervals, and the temperature regulator, the temperature sensor and the motor are electrically connected.
Preferably, the movable rod and the threaded sleeve are integrated, the number of the support rods is six, and the six support rods are equidistantly distributed outside the bearing seat.
Preferably, the front of mount has seted up the arc recess, it is box-like to filter the frame, and the opening has been seted up at the top, and the surface equidistance of filtering the frame has seted up the filtration hole, the one end that the motor was kept away from to the movable rod and the inside swing joint of bearing frame.
Another technical problem to be solved by the present invention is to provide a lithium carbonate impurity removal method, which includes the following steps:
1) the raw materials after reaction are led into a reaction cavity through a feeding guide pipe, a motor is started while reaction liquid is led into a reactor, the motor drives a movable rod to move in a bearing seat, a fixed layer plate at the topmost end can converge the reaction liquid entering the reaction cavity to the middle part and flow into a filter frame at the topmost end, the reaction liquid in the filter frame can flow out from a filter hole under the action of centrifugal force, a part of impurities in the reaction liquid can be left in the filter frame, the reaction liquid flowing out from the filter hole is converged by the fixed layer plate at the middle part again and flows into the filter frame at the middle part, the reaction liquid is filtered under the action of the centrifugal force, the impurities in the reaction liquid are filtered repeatedly for three times, and the purity of the reaction liquid is improved;
2) the reaction liquid after the third filtering operation enters the bottom of the reaction cavity through a circular through hole formed in the top of a fixed partition plate, a temperature sensor detects the temperature of the reaction liquid in the reaction cavity, then a temperature regulator is started to continuously heat the reaction liquid in the reaction cavity to 100 ℃, the temperature of 100-120 ℃ lasts for 20-30 minutes, then the temperature regulator is used for cooling the reaction liquid, a discharging conduit is opened to enable the reaction liquid in the reaction cavity to flow outwards through an impurity removal assembly, and a filter screen in the impurity removal assembly is used for removing impurities of the reaction liquid for the second time;
3) when the impurities in the filter frame are excessive, the movable rod is pulled out of the bearing seat, the positioning screw is rotated, the filter frame, the top cover and the bottom cover are sequentially taken down, then the filter frame is cleaned, and when the impurities on the filter screen are excessive, the bolt is unscrewed to separate the movable frame from the fixed frame, so that the filter screen is cleaned.
(III) advantageous effects
Compared with the prior art, the invention provides a lithium carbonate impurity removing method and device, which have the following beneficial effects:
1. according to the lithium carbonate impurity removing method and device, the inclined plane design at the top of the fixing layer plate enables the reaction liquid to be collected to the center, the flowing speed of the reaction liquid is improved, impurity removing efficiency is increased, the four supporting rods are used for fixing the bearing seats, the movable rods are guaranteed not to deviate in the moving process, and loss of the device is reduced.
2. According to the lithium carbonate impurity removing method and the lithium carbonate impurity removing device, the top cover is sleeved outside the movable rod, then the filter frame is sleeved, finally the bottom cover is sleeved, the ejector rod, the filter frame, the threaded sleeve and the bottom cover are fixed together by the aid of the positioning screws, so that the filter frame is prevented from being deviated or loosened in the moving process of the movable rod, meanwhile, blockage and mixing can be effectively avoided, and impurity removing efficiency of reaction liquid is improved.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the trash removal assembly of the present invention.
In the figure: the device comprises a reaction cavity 1, a fixed laminate 2, a fixed partition 3, a temperature regulator 4, a temperature sensor 5, a support rod 6, a bearing seat 7, a motor 8, a movable rod 9, a threaded sleeve 10, a filter frame 11, a top cover 12, a bottom cover 13, a set screw 14, a seal ring 15, a feed conduit 16, a bottom plate 17, a discharge conduit 18, an impurity removal assembly 19, a movable frame 191, a fixed frame 192, a support frame 193, a filter screen 194 and bolts 195.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: a lithium carbonate impurity removal method comprises the following steps:
1) the raw materials after reaction are led into a reaction chamber 1 through a feeding conduit 16, a motor 8 is started while reaction liquid is led into a reactor 1, the motor 8 drives a movable rod 9 to move in a bearing seat 7, a fixed layer plate 2 at the topmost end can converge the reaction liquid entering the reaction chamber 1 to the middle and flow into a filter frame 11 at the topmost end, the reaction liquid in the filter frame 11 can flow out from a filter hole under the action of centrifugal force, a part of impurities in the reaction liquid can remain in the filter frame 11, the reaction liquid flowing out from the filter hole is converged by the fixed layer plate 2 at the middle again and flows into the filter frame 11 at the middle, the filtration is carried out under the action of the centrifugal force, the impurities in the reaction liquid are filtered repeatedly for three times, and the purity of the reaction liquid is improved;
2) the reaction liquid after the third filtering operation enters the bottom of the reaction cavity 1 through a circular through hole formed in the top of the fixed partition plate 3, the temperature sensor 5 detects the temperature of the reaction liquid in the reaction cavity 1, then the temperature regulator 4 is started to continuously heat the reaction liquid in the reaction cavity 1 to 100 ℃, the temperature of 100 ℃ lasts for 20 minutes, then the temperature regulator 4 is used for cooling the reaction liquid, the discharging conduit 18 is opened to enable the reaction liquid in the reaction cavity 1 to flow outwards through the impurity removing assembly 19, and the filter screen 194 in the impurity removing assembly 19 is used for carrying out secondary impurity removal on the reaction liquid;
3) when the impurities in the filter frame 11 are excessive, the movable rod 9 is pulled out of the bearing seat 7, the positioning screw 14 is rotated, the filter frame 11, the top cover 12 and the bottom cover 13 are sequentially taken down, then the filter frame 11 is cleaned, and when the impurities on the filter screen 194 are excessive, the bolt 195 is unscrewed to separate the movable frame 191 from the fixed frame 192, so that the filter screen 194 is cleaned.
After the triple filtration, the temperature of the reaction solution was set to 100 ℃ for 20 minutes, and a small amount of impurities were floated on the surface of the reaction solution, and impurities were removed by the filtration of the filter screen 194.
Example two: a lithium carbonate impurity removal method comprises the following steps:
1) the raw materials after reaction are led into a reaction chamber 1 through a feeding conduit 16, a motor 8 is started while reaction liquid is led into a reactor 1, the motor 8 drives a movable rod 9 to move in a bearing seat 7, a fixed layer plate 2 at the topmost end can converge the reaction liquid entering the reaction chamber 1 to the middle and flow into a filter frame 11 at the topmost end, the reaction liquid in the filter frame 11 can flow out from a filter hole under the action of centrifugal force, a part of impurities in the reaction liquid can remain in the filter frame 11, the reaction liquid flowing out from the filter hole is converged by the fixed layer plate 2 at the middle again and flows into the filter frame 11 at the middle, the filtration is carried out under the action of the centrifugal force, the impurities in the reaction liquid are filtered repeatedly for three times, and the purity of the reaction liquid is improved;
2) the reaction liquid after the third filtering operation enters the bottom of the reaction cavity 1 through a circular through hole formed in the top of the fixed partition plate 3, the temperature sensor 5 detects the temperature of the reaction liquid in the reaction cavity 1, then the temperature regulator 4 is started to continuously heat the reaction liquid in the reaction cavity 1 to 100 ℃, the temperature of 115 ℃ lasts for 25 minutes, then the temperature regulator 4 is used for cooling the reaction liquid, the discharging conduit 18 is opened to enable the reaction liquid in the reaction cavity 1 to flow outwards through the impurity removing assembly 19, and the filter screen 194 in the impurity removing assembly 19 is used for carrying out secondary impurity removal on the reaction liquid;
3) when the impurities in the filter frame 11 are excessive, the movable rod 9 is pulled out of the bearing seat 7, the positioning screw 14 is rotated, the filter frame 11, the top cover 12 and the bottom cover 13 are sequentially taken down, then the filter frame 11 is cleaned, and when the impurities on the filter screen 194 are excessive, the bolt 195 is unscrewed to separate the movable frame 191 from the fixed frame 192, so that the filter screen 194 is cleaned.
After the triple filtration, the temperature of the reaction solution was set to 115 ℃ for 25 minutes, and a small amount of impurities were floated on the surface of the reaction solution, and impurities were removed by the filtration of the filter screen 194.
Example three: a lithium carbonate impurity removal method comprises the following steps:
1) the raw materials after reaction are led into a reaction chamber 1 through a feeding conduit 16, a motor 8 is started while reaction liquid is led into a reactor 1, the motor 8 drives a movable rod 9 to move in a bearing seat 7, a fixed layer plate 2 at the topmost end can converge the reaction liquid entering the reaction chamber 1 to the middle and flow into a filter frame 11 at the topmost end, the reaction liquid in the filter frame 11 can flow out from a filter hole under the action of centrifugal force, a part of impurities in the reaction liquid can remain in the filter frame 11, the reaction liquid flowing out from the filter hole is converged by the fixed layer plate 2 at the middle again and flows into the filter frame 11 at the middle, the filtration is carried out under the action of the centrifugal force, the impurities in the reaction liquid are filtered repeatedly for three times, and the purity of the reaction liquid is improved;
2) the reaction liquid after the third filtering operation enters the bottom of the reaction cavity 1 through a circular through hole formed in the top of the fixed partition plate 3, the temperature sensor 5 detects the temperature of the reaction liquid in the reaction cavity 1, then the temperature regulator 4 is started to continuously heat the reaction liquid in the reaction cavity 1 to 100 ℃, the temperature of 120 ℃ lasts for 30 minutes, then the temperature regulator 4 is used for cooling the reaction liquid, the discharging conduit 18 is opened to enable the reaction liquid in the reaction cavity 1 to flow outwards through the impurity removing assembly 19, and the filter screen 194 in the impurity removing assembly 19 is used for removing impurities for the reaction liquid for the second time;
3) when the impurities in the filter frame 11 are excessive, the movable rod 9 is pulled out of the bearing seat 7, the positioning screw 14 is rotated, the filter frame 11, the top cover 12 and the bottom cover 13 are sequentially taken down, then the filter frame 11 is cleaned, and when the impurities on the filter screen 194 are excessive, the bolt 195 is unscrewed to separate the movable frame 191 from the fixed frame 192, so that the filter screen 194 is cleaned.
After the triple filtration, the temperature of the reaction solution was set to 120 ℃ for 30 minutes, and a small amount of impurities were floated on the surface of the reaction solution, and impurities were removed by the filtration of the filter screen 194.
The invention has the beneficial effects that: the reaction liquid can be converged to the center through the inclined surface design at the top of the fixed laminate 2, the flow speed of the reaction liquid is improved, the impurity removal efficiency is improved, the bearing seat 7 is fixed by the four support rods 6, the movable rod 9 is ensured not to deviate in the movement process, the loss of the device is reduced, the top cover 12 is firstly sleeved outside the movable rod 9 during the installation, then the filter frame 11 is sleeved in the bottom cover 13, and finally the top rod 12, the filter frame 11, the threaded sleeve 10 and the bottom cover 13 are fixed together by the positioning screws 14, so that the filter frame 11 is ensured not to deviate or loosen in the movement process of the movable rod 9, the blockage and the mixing can be effectively avoided, the impurity removal efficiency of the reaction liquid is improved, the problem that the formed hydroxide is precipitated into colloidal substances is solved, when the filtration pressure difference is increased, the pore passages among particles can be narrowed, and sometimes the passages can be blocked because the particles are, slow filtration speed or mixing, and poor separation effect.
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 (6)
1. The utility model provides a lithium carbonate impurity remove device, includes reaction chamber (1), its characterized in that: the inner wall of the reaction chamber (1) is fixedly connected with a fixed layer plate (2), the bottom of the inner wall of the reaction chamber (1) is fixedly connected with a fixed baffle plate (3), the top of the fixed baffle plate (3) is fixedly provided with a temperature regulator (4), the top of the fixed baffle plate (3) is fixedly connected with a support rod (6) which is positioned at the right side of the temperature regulator (4), the top of the fixed baffle plate (3) is fixedly provided with a temperature sensor (5) which is positioned at the right side of the support rod (6), one end of the support rod (6) far away from the fixed baffle plate (3) is fixedly connected with a bearing seat (7), the top of the reaction chamber (1) is fixedly provided with a motor (8), the outer part of a drive shaft of the motor (8) is fixedly connected with a movable rod (9), the outer part of the movable rod (9) is fixedly connected with a threaded sleeve (10), the, the top fixedly connected with top cap (12) of filter frame (11), the bottom fixedly connected with bottom (13) of filter frame (11), the top threaded connection of top cap (12) has set screw (14), the inside fixedly connected with sealing washer (15) on reaction chamber (1) left side top, the inside fixedly connected with feeding pipe (16) of sealing washer (15), the inner chamber diapire fixedly connected with bottom plate (17) of reaction chamber (1), the bottom fixedly connected with discharging pipe (18) of reaction chamber (1), two one side fixedly mounted that discharging pipe (18) is relative has edulcoration subassembly (19), edulcoration subassembly (19) include adjustable shelf (191), mount (192), inner support frame (193), filter screen (194) and bolt (195), the back fixedly connected with mount (192) of adjustable shelf (191), the back of the movable frame (191) is located inside the fixed frame (192) and is fixedly connected with an inner support frame (193), and a filter screen (194) is fixedly installed inside the inner support frame (193).
2. The lithium carbonate impurity removing device according to claim 1, wherein the number of the fixed layer plates (2) is three, the three fixed layer plates (2) are distributed on the inner wall of the reaction chamber (1) at equal intervals, the top of each fixed layer plate (2) is an inclined surface, the bottom of each fixed layer plate (2) is provided with a material passing hole, and the movable frame (191) is fixedly connected with the fixed frame (192) through bolts (195).
3. The lithium carbonate impurity removing device according to claim 1, wherein the fixed partition plate (3) is a circular plate, circular through holes are formed in the top of the fixed partition plate (3) at equal intervals, and the temperature regulator (4), the temperature sensor (5) and the motor (8) are electrically connected.
4. The lithium carbonate impurity removing device according to claim 1, wherein the movable rod (9) and the threaded sleeve (10) are integrated, the number of the support rods (6) is six, and the six support rods (6) are equidistantly distributed outside the bearing seat (7).
5. The lithium carbonate impurity removing device according to claim 1, wherein the front surface of the fixing frame (192) is provided with an arc-shaped groove, the filter frame (11) is box-shaped, the top of the filter frame is provided with an opening, the outer surface of the filter frame (11) is provided with filter holes at equal intervals, and one end of the movable rod (9) far away from the motor (8) is movably connected with the inside of the bearing seat (7).
6. The method for removing impurities in lithium carbonate is characterized by comprising the following steps of:
1) the reacted raw materials are led into the reaction cavity (1) through a feeding conduit (16), the motor (8) is started while the reaction liquid is led into the reactor (1), so that the motor (8) drives the movable rod (9) to move in the bearing seat (7), the fixed laminate (2) at the topmost end can converge the reaction liquid entering the reaction cavity (1) to the middle part and flow into the filter frame (11) at the topmost end, under the action of centrifugal force, reaction liquid in the filter rack (11) flows out from the filter holes, a part of impurities in the reaction liquid are left in the filter rack (11), the reaction liquid flowing out from the filter holes is gathered by the middle fixing laminate (2) again and flows into the middle filter rack (11), the reaction liquid is filtered under the action of the centrifugal force, and the impurities in the reaction liquid are filtered repeatedly for three times, so that the purity of the reaction liquid is improved;
2) the reaction liquid after the third filtering operation enters the bottom of the reaction cavity (1) through a circular through hole formed in the top of the fixed partition plate (3), a temperature sensor (5) detects the temperature of the reaction liquid in the reaction cavity (1), then a temperature regulator (4) is started to continuously heat the reaction liquid in the reaction cavity (1) to 100 ℃, the temperature of 100-120 ℃ lasts for 20-30 minutes, then the temperature regulator (4) is used for cooling the reaction liquid, a discharge conduit (18) is opened to enable the reaction liquid in the reaction cavity (1) to flow out through an impurity removal assembly (19), and a filter screen (194) in the impurity removal assembly (19) is used for removing impurities for the reaction liquid for the second time;
3) when the impurities in the filter frame (11) are excessive, the movable rod (9) is pulled out of the bearing seat (7), the positioning screw (14) is rotated, the filter frame (11), the top cover (12) and the bottom cover (13) are sequentially taken down, then the filter frame (11) is cleaned, and when the impurities on the filter screen (194) are excessive, the bolt (195) is unscrewed to separate the movable frame (191) from the fixed frame (192), so that the filter screen (194) is cleaned.
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| CN201911369261.XA CN110980778A (en) | 2019-12-26 | 2019-12-26 | Lithium carbonate impurity removing method and device |
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| CN201911369261.XA CN110980778A (en) | 2019-12-26 | 2019-12-26 | Lithium carbonate impurity removing method and device |
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Application publication date: 20200410 |