CN209338627U - A kind of lithium metal slag recycling equipment - Google Patents
A kind of lithium metal slag recycling equipment Download PDFInfo
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- CN209338627U CN209338627U CN201821715478.2U CN201821715478U CN209338627U CN 209338627 U CN209338627 U CN 209338627U CN 201821715478 U CN201821715478 U CN 201821715478U CN 209338627 U CN209338627 U CN 209338627U
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- Prior art keywords
- lithium
- collecting tank
- slag
- pipeline
- valve
- Prior art date
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Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 201
- 239000002893 slag Substances 0.000 title claims abstract description 105
- 238000004064 recycling Methods 0.000 title claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000011084 recovery Methods 0.000 claims abstract description 63
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 abstract description 22
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 22
- 239000007789 gas Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 11
- 229910052786 argon Inorganic materials 0.000 description 11
- 239000011734 sodium Substances 0.000 description 11
- 229910052708 sodium Inorganic materials 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 230000000505 pernicious effect Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000004821 distillation Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 description 2
- 239000010814 metallic waste Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- -1 lithium metals Chemical class 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model provides a kind of lithium metal slag recycling equipment comprising: recovery furnace, the furnace chamber of recovery furnace is interior to be equipped with horizontal strainer, and furnace chamber is the slag trapping chamber on the upside of strainer and the collection lithium room on the downside of strainer by strainer；White oil collecting tank is equipped with the first pipeline for being connected to white oil collecting tank and slag trapping chamber between white oil collecting tank and slag trapping chamber, the second pipeline of the headspace for being connected to white oil collecting tank and collection lithium room is equipped between white oil collecting tank and the top of collection lithium room；Sodium potassium collecting tank is equipped with the third pipeline for being connected to the headspace of sodium potassium collecting tank sum aggregate lithium room between sodium potassium collecting tank and the top of collection lithium room；Lithium collecting tank is equipped with the 4th pipeline for being connected to the bottom space of lithium collecting tank sum aggregate lithium room between lithium collecting tank and the bottom of collection lithium room；Vacuum pump, vacuum pump are connected to white oil collecting tank and sodium potassium collecting tank respectively.It is not chemically reacted during the utility model processing lithium metal slag, entire treatment process is safely controllable, energy conservation and environmental protection.
Description
Technical field
The utility model relates to recycle the device and method of lithium metal from lithium metal slag, belong to energy and material technology neck
Domain.
Background technique
The oily refining stage of lithium metal in process of production can generate about 3% waste residue containing lithium, and in addition to containing in lithium slag
Outside the impurity such as white oil, lithium nitride, lithia, carbon, potassium sodium and its oxide, also contains and have more than 50% lithium metal.Due to lithium metal
Chemical property it is active, while including that sea surface oil slick can be gradually thinning in long-term place for the lithium slags of a large amount of lithium metals, and loses
The lithium metal slag for going oil film to protect can cause serious security risk to personnel, related facility, environment, only just occur within 2012
3 lithium metal waste residue auto-ignition events.In addition, lithium metal has very high economic value as a kind of precious metal.Therefore, to gold
The recycling of the safe handling and lithium metal that belong to lithium waste residue is of great significance.
Currently, the recovery method of lithium slag specifically includes that 1, directly lithium slag, which is added to the water, is hydrolyzed, by controlling lithium
The additional amount of slag controls the extent of reaction of hydrolysis.Since lithium slag reacts acutely in water, a large amount of heat and combustibility can be generated
Gas, it is therefore desirable to which the treating capacity of each lithium slag of strict control, process cycle are longer.2, gold is recycled by the method for hydrometallurgic recovery
Belong to lithium, technical process is responsible for, and energy consumption is higher, realizes that industrial applications are difficult.3, high temperature burning handling lithium metal waste residue and return
Lithium metal is received, one combust of lithium metal is easily caused, controls extremely difficult, risk factor height.
Utility model content
, energy consumption high, poor controllability the problems such as slow for rate existing for lithium slag recovery method in the prior art, this is practical
Method realization pair that is novel to propose a kind of lithium metal slag recycling equipment, using negative pressure filtration to combine with vacuum distillation
The direct recycling of lithium metal in lithium slag.Lithium slag is recycled using the utility model, any chemical reaction does not occur, does not discharge reaction
Heat does not generate hazardous gas, and entire technical process is safely controllable, energy conservation and environmental protection.
The utility model aim is realized by following technical proposals:
A kind of lithium metal slag recycling equipment comprising:
Recovery furnace, is equipped with horizontal strainer in the furnace chamber of the recovery furnace, the strainer by the furnace chamber be positioned at
The top of slag trapping chamber on the upside of the strainer and the collection lithium room on the downside of the strainer, the recovery furnace is equipped with and the furnace chamber
The air inlet and feed opening of connection；
White oil collecting tank, between the white oil collecting tank and the slag trapping chamber be equipped with for be connected to the white oil collecting tank and
First pipeline of the slag trapping chamber, first pipeline are equipped with the first valve, the white oil collecting tank and the collection lithium room
The second pipeline of the headspace for being connected to the white oil collecting tank and the collection lithium room, second pipe are equipped between top
Road is equipped with the second valve；
Sodium potassium collecting tank is equipped between the sodium potassium collecting tank and the top of the collection lithium room and receives for being connected to the sodium potassium
Collect the third pipeline of the headspace of tank and the collection lithium room, the third pipeline is equipped with third valve；
Lithium collecting tank, the lithium collecting tank and it is described collection lithium room bottom between be equipped with for be connected to the lithium collecting tank and
4th pipeline of the bottom space of the collection lithium room, the 4th pipeline are equipped with the 4th valve；
Vacuum pump, the vacuum pump are connected to the white oil collecting tank and the sodium potassium collecting tank respectively.
It further include that setting exists as an a kind of specific embodiment of lithium metal slag recycling equipment of the utility model
Blender in the slag trapping chamber.
It further include being connected to as an a kind of specific embodiment of lithium metal slag recycling equipment of the utility model
The first vacuum measuring device and the second vacuum measuring device on the recovery furnace, in which: first vacuum measuring device is used
In detecting the vacuum degree in the slag trapping chamber, second vacuum measuring device is for detecting the indoor vacuum degree of the collection lithium.
It further include being connected to as an a kind of specific embodiment of lithium metal slag recycling equipment of the utility model
Thermometer on the recovery furnace, the thermometer are used to detect the temperature in the slag trapping chamber.
Compared with prior art, the direct recycling using the utility model to the lithium metal in lithium slag, does not occur any
Chemical reaction, does not discharge reaction heat, does not generate hazardous gas, entire technical process is safely controllable, energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of lithium metal slag recycling equipment provided by the utility model.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Due to lithium metal and its impurities the vapour pressure difference under liquidus temperature in lithium metal slag, as shown in table 1,
List the saturated vapor pressure of the main component in different temperatures in lithium metal slag.Therefore it can use the evaporation of heterogeneity
The physical difference of rate and condensing rate realizes the separation of lithium metal and other impurities using high-temperature pressure-reduction distillation technique, thus
Obtain the technical grade even lithium metal of LITHIUM BATTERY.
The saturated vapor pressure (Pa) of main component in 1 lithium slag of table
| Temperature/ | White oil | K | Na | Li | C | Li2O | Li3N |
| 300 | 70.92 | ~0 | ~0 | ~0 | ~0 | ~0 | ~0 |
| 400 | >>1.544×103 | 1.544×103 | 50 | 0.013 | ~0 | ~0 | ~0 |
| 440 | >>3.365×103 | 3.365×103 | 141.8 | 0.065 | ~0 | ~0 | ~0 |
| 480 | >>6.723×103 | 6.723×103 | 822.4 | 0.259 | ~0 | ~0 | ~0 |
The utility model proposes a kind of lithium metal slag recycling equipment and methods, below in conjunction with concrete principle and mistake
The lithium metal slag recycling equipment and method of the utility model is described in detail in journey:
A kind of lithium metal slag recycling equipment, as shown in Figure 1, the lithium metal slag recycling equipment includes recycling
Furnace, white oil collecting tank 11, sodium potassium collecting tank 12, lithium collecting tank 13 and vacuum pump 14.Wherein:
Horizontal strainer 3 is equipped in the furnace chamber of the recovery furnace, the furnace chamber of the recovery furnace is position by the strainer 3
In the slag trapping chamber 2 of 3 upside of strainer and positioned at the collection lithium room 4 of 3 downside of strainer, the top of the recovery furnace is equipped with and institute
State the air inlet 5 and feed opening 6 of furnace chamber connection.
It is equipped between the white oil collecting tank 11 and the slag trapping chamber 2 for being connected to the white oil collecting tank 11 and the collection
First pipeline of grit chamber 2, first pipeline are equipped with the first valve 7, the top of the white oil collecting tank 11 and the collection lithium room 4
The second pipeline equipped with the headspace for being connected to the white oil collecting tank 11 and the collection lithium room 4 between portion, described second
Pipeline is equipped with the second valve 8.
The sodium potassium collecting tank 12 and it is described collection lithium room 4 top between be equipped with for be connected to the sodium potassium collecting tank 12 and
The third pipeline of the headspace of the collection lithium room 4, the third pipeline are equipped with third valve 9.
It is equipped between the lithium collecting tank 13 and the bottom of the collection lithium room 4 for being connected to the lithium collecting tank 13 and described
Collect the 4th pipeline of the bottom space of lithium room 4, the 4th pipeline is equipped with the 4th valve 10.
The vacuum pump 14 is connected to the white oil collecting tank 11 and the sodium potassium collecting tank 12 respectively.
In certain embodiments, the lithium metal slag recycling equipment further includes being arranged in the slag trapping chamber 2
Blender 1.
In certain embodiments, the lithium metal slag recycling equipment further includes being connected on the recovery furnace
First vacuum measuring device and the second vacuum measuring device, in which: first vacuum measuring device is for detecting the collection slag
Vacuum degree in room 2, second vacuum measuring device are used to detect the vacuum degree in the collection lithium room 4.
In certain embodiments, the lithium metal slag recycling equipment further includes being connected on the recovery furnace
Thermometer, the thermometer are used to detect the temperature in the slag trapping chamber.
On the other hand the utility model provides a kind of lithium metal slag recovery and treatment method, use above-mentioned lithium metal slag
Recycling equipment realizes the recovery processing to lithium metal slag, and the lithium metal slag recovery and treatment method includes:
Charging: lithium metal slag being added to the slag trapping chamber 2 of recovery furnace through the feed opening 6, closes feed opening 6.
Inert gas replacement: inert gas replacement is carried out to replace harmful gas in loss of sheet to the furnace atmosphere in recovery furnace
Body.
First stage distillation: opening the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve, opens true
Atmosphere in recovery furnace is heated to 300 DEG C and keeps 0.5h by sky pump 14 when the vacuum degree in recovery furnace is lower than 500Pa, this
In the process: the white oil in lithium metal slag is distilled out lithium metal slag, and flows into white oil collecting tank along the first pipeline, the second pipeline
In 11.
Second stage distillation: closing the first valve 7, the second valve 8 and the 4th valve 10, opens third valve 9, vacuum pump
14 continue to vacuumize until the vacuum degree in recovery furnace reaches 0.1-1Pa, while the atmosphere in recovery furnace is heated to 400-480
DEG C and keep 2-3h, during this: the lithium metal in lithium metal slag is constantly melted and is flowed into collection lithium room 4 through strainer 3, synchronous
, potassium, sodium in molten metal lithium are distilled out lithium metal and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Sky pump 14, through air inlet 5 by inert gas be passed through in recovery furnace to drive the molten metal lithium in collection lithium room 4 through the 4th pipe
Road enters to lithium collecting tank 13.
In certain embodiments, in the first stage filtering distillation and second stage filtering distilation steps,
Turn on agitator 1 carries out lithium metal slag to continue stirring, so that lithium metal slag is sufficiently heated to promote distilling effect.
In certain embodiments, employed in the inert gas replacement step and the export lithium metal step
Inert gas is argon gas.
It in certain embodiments, further include residue hydrolysis after the export lithium metal step, the residue hydrolysis
The residue remained in the slag trapping chamber 2 is taken out and is hydrolyzed by step.
A kind of lithium metal slag recycling equipment of the utility model and method are carried out into one below by specific embodiment
Step illustrates.
Example one
Lithium metal slag is added to the slag trapping chamber 2 of recovery furnace through feed opening 6, feed opening 6 is closed and recovery furnace is sealed.
Argon gas three times is carried out to the furnace atmosphere in recovery furnace to replace to replace the pernicious gas in loss of sheet.
It opens the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve 10, open vacuum pump 14, when returning
When receiving the vacuum degree in furnace and being lower than 500Pa, the atmosphere in recovery furnace is heated to 300 DEG C, keeps 0.5h, during this: metal
White oil in lithium slag is distilled out lithium metal slag, and flows into white oil collecting tank 11 along the first pipeline, the second pipeline.
The first valve 7, the second valve 8 and the 4th valve 10 are closed, third valve 9 is opened, vacuum pump 14 continues to vacuumize
Until the vacuum degree in recovery furnace reaches 1Pa, while the atmosphere in recovery furnace is heated to 400 DEG C and keeps 2h, during this:
Negative pressure is formed between slag trapping chamber 2 and collection lithium room 4, the lithium metal in lithium metal slag constantly melts and flows into collection lithium room 4 through strainer 3
It is interior, synchronous, potassium, sodium in lithium metal liquid are distilled off and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Sky pump 14, through air inlet 5 by argon gas be passed through in recovery furnace to drive the lithium metal liquid in collection lithium room 4 to enter to through the 4th pipeline
Lithium collecting tank 13.
By the lithium metal liquid place to go in lithium collecting tank 13 and solid metallic lithium is poured into, through detecting, purity reaches
99.94%, sodium content 0.016%.The residue taken out in slag trapping chamber 2 is detected, and the lithium content in residue is 3.3%.
Example two
Lithium metal slag is added to the slag trapping chamber 2 of recovery furnace through feed opening 6, feed opening 6 is closed and recovery furnace is sealed.
Argon gas three times is carried out to the furnace atmosphere in recovery furnace to replace to replace the pernicious gas in loss of sheet.
It opens the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve 10, open vacuum pump 14, when returning
When receiving the vacuum degree in furnace and being lower than 500Pa, the atmosphere in recovery furnace is heated to 300 DEG C and keeps 0.5h, during this: metal
White oil in lithium slag is distilled out lithium metal slag, and flows into white oil collecting tank 11 along the first pipeline, the second pipeline.
The first valve 7, the second valve 8 and the 4th valve 10 are closed, third valve 9 is opened, vacuum pump 14 continues to vacuumize
Until the vacuum degree in recovery furnace reaches 1Pa, while the atmosphere in recovery furnace is heated to 400 DEG C and keeps 3h, during this:
Negative pressure is formed between slag trapping chamber 2 and collection lithium room 4, the lithium metal in lithium metal slag constantly melts and flows into collection lithium room 4 through strainer 3
It is interior, synchronous, potassium, sodium in lithium metal liquid are distilled off and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Sky pump 14, through air inlet 5 by argon gas be passed through in recovery furnace to drive the lithium metal liquid in collection lithium room 4 to enter to through the 4th pipeline
Lithium collecting tank 13.
By the lithium metal liquid place to go in lithium collecting tank 13 and solid metallic lithium is poured into, through detecting, purity reaches
99.95%, sodium content 0.012%.The residue taken out in slag trapping chamber 2 is detected, and the lithium content in residue is 3.2%.
Example three
Lithium metal slag is added to the slag trapping chamber 2 of recovery furnace through feed opening 6, feed opening 6 is closed and recovery furnace is sealed.
Argon gas three times is carried out to the furnace atmosphere in recovery furnace to replace to replace the pernicious gas in loss of sheet.
It opens the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve 10, open vacuum pump 14, when returning
When receiving the vacuum degree in furnace and being lower than 500Pa, the atmosphere in recovery furnace is heated to 300 DEG C and keeps 0.5h, during this: metal
White oil in lithium slag is distilled out lithium metal slag, and flows into white oil collecting tank 11 along the first pipeline, the second pipeline.
The first valve 7, the second valve 8 and the 4th valve 10 are closed, third valve 9 is opened, vacuum pump 14 continues to vacuumize
Until the vacuum degree in recovery furnace reaches 0.1Pa, while the atmosphere in recovery furnace is heated to 400 DEG C and keeps 3h, this process
In: negative pressure is formed between slag trapping chamber 2 and collection lithium room 4, the lithium metal in lithium metal slag constantly melts and flows into collection lithium room through strainer 3
In 4, synchronous, potassium, sodium in lithium metal liquid are distilled off and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Argon gas, is passed through to recovery furnace by sky pump 14 through air inlet 5, to drive the lithium metal liquid in collection lithium room 4 to enter through the 4th pipeline
To lithium collecting tank 13.
By the lithium metal liquid place to go in lithium collecting tank 13 and solid metallic lithium is poured into, through detecting, purity reaches
99.97%, sodium content 0.007%.The residue taken out in slag trapping chamber 2 is detected, and the lithium content in residue is 2.26%.
Example four
Lithium metal slag is added to the slag trapping chamber 2 of recovery furnace through feed opening 6, feed opening 6 is closed and recovery furnace is sealed.
Argon gas three times is carried out to the furnace atmosphere in recovery furnace to replace to replace the pernicious gas in loss of sheet.
It opens the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve 10, open vacuum pump 14, when returning
When receiving the vacuum degree in furnace and being lower than 500Pa, the atmosphere in recovery furnace is heated to 300 DEG C and keeps 0.5h, during this: metal
White oil in lithium slag is distilled out lithium metal slag, and flows into white oil collecting tank 11 along the first pipeline, the second pipeline.
The first valve 7, the second valve 8 and the 4th valve 10 are closed, third valve 9 is opened, vacuum pump 14 continues to vacuumize
Until the vacuum degree in recovery furnace reaches 0.1Pa, while the atmosphere in recovery furnace is heated to 440 DEG C and keeps 3h, this process
In: negative pressure is formed between slag trapping chamber 2 and collection lithium room 4, the lithium metal in lithium metal slag constantly melts and flows into collection lithium room through strainer 3
In 4, synchronous, potassium, sodium in lithium metal liquid are distilled off and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Sky pump 14, through air inlet 5 by argon gas be passed through in recovery furnace to drive the lithium metal liquid in collection lithium room 4 to enter to through the 4th pipeline
Lithium collecting tank 13.
By the lithium metal liquid place to go in lithium collecting tank 13 and solid metallic lithium is poured into, through detecting, purity reaches
99.98%, sodium content 0.005%.The residue taken out in slag trapping chamber 2 is detected, and the lithium content in residue is 2.06%.
Example five
Lithium metal slag is added to the slag trapping chamber 2 of recovery furnace through feed opening 6, feed opening 6 is closed and recovery furnace is sealed.
Argon gas three times is carried out to the furnace atmosphere in recovery furnace to replace to replace the pernicious gas in loss of sheet.
It opens the first valve 7 and the second valve 8, closes third valve 9 and the 4th valve 10, open vacuum pump 14, when returning
When receiving the vacuum degree in furnace and being lower than 500Pa, the atmosphere in recovery furnace is heated to 300 DEG C and keeps 0.5h, during this: metal
White oil in lithium slag is distilled out lithium metal slag, and flows into white oil collecting tank 11 along the first pipeline, the second pipeline.
The first valve 7, the second valve 8 and the 4th valve 10 are closed, third valve 9 is opened, vacuum pump 14 continues to vacuumize
Until the vacuum degree in recovery furnace reaches 0.1Pa, while the atmosphere in recovery furnace is heated to 480 DEG C and keeps 3h, this process
In: negative pressure is formed between slag trapping chamber 2 and collection lithium room 4, the lithium metal in lithium metal slag constantly melts and flows into collection lithium room through strainer 3
In 4, synchronous, potassium, sodium in lithium metal liquid are distilled off and flow into sodium potassium collecting tank 12 along third pipeline.
It exports lithium metal: closing the first valve 7, the second valve 8 and third valve 9, open the 4th valve 10, and close true
Argon gas, is passed through to recovery furnace by sky pump 14 through air inlet 5, to drive the lithium metal liquid in collection lithium room 4 to enter through the 4th pipeline
To lithium collecting tank 13.
By the lithium metal liquid place to go in lithium collecting tank 13 and solid metallic lithium is poured into, through detecting, purity reaches
99.98%, sodium content 0.007%.The residue taken out in slag trapping chamber 2 is detected, and the lithium content in residue is 1.98%.
The description with certain particularity detailed enough has been carried out to the utility model above.It is common in the field
It is to be understood by the skilled artisans that the description in embodiment is only exemplary, without departing from the utility model true spirit and
All changes are made under the premise of range all should belong to the protection scope of the utility model.The utility model is claimed
Range is to be defined by described claims, rather than limited by the foregoing description in embodiment.
Claims (4)
1. a kind of lithium metal slag recycling equipment, characterized in that it comprises:
Recovery furnace, the furnace chamber of the recovery furnace is interior to be equipped with horizontal strainer, and the furnace chamber is positioned at described by the strainer
Slag trapping chamber on the upside of strainer and the collection lithium room on the downside of the strainer, the top of the recovery furnace is equipped with to be connected to the furnace chamber
Air inlet and feed opening；
White oil collecting tank is equipped between the white oil collecting tank and the slag trapping chamber for being connected to the white oil collecting tank and described
First pipeline of slag trapping chamber, first pipeline are equipped with the first valve, the top of the white oil collecting tank and the collection lithium room
Between be equipped with the second pipeline of headspace for being connected to the white oil collecting tank and the collection lithium room, on second pipeline
Equipped with the second valve；
Sodium potassium collecting tank is equipped between the sodium potassium collecting tank and the top of the collection lithium room for being connected to the sodium potassium collecting tank
With the third pipeline of the headspace of the collection lithium room, the third pipeline is equipped with third valve；
Lithium collecting tank is equipped between the lithium collecting tank and the bottom of the collection lithium room for being connected to the lithium collecting tank and described
Collect the 4th pipeline of the bottom space of lithium room, the 4th pipeline is equipped with the 4th valve；
Vacuum pump, the vacuum pump are connected to the white oil collecting tank and the sodium potassium collecting tank respectively.
2. lithium metal slag recycling equipment as described in claim 1, which is characterized in that it further includes being arranged in the collection slag
Indoor blender.
3. lithium metal slag recycling equipment as described in claim 1, it is characterised in that: it further includes being connected to the recycling
The first vacuum measuring device and the second vacuum measuring device on furnace, in which: first vacuum measuring device is for detecting institute
The vacuum degree in slag trapping chamber is stated, second vacuum measuring device is for detecting the indoor vacuum degree of the collection lithium.
4. lithium metal slag recycling equipment as described in claim 1, it is characterised in that: it further includes being connected to the recycling
Thermometer on furnace, the thermometer are used to detect the temperature in the slag trapping chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715478.2U CN209338627U (en) | 2018-10-23 | 2018-10-23 | A kind of lithium metal slag recycling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715478.2U CN209338627U (en) | 2018-10-23 | 2018-10-23 | A kind of lithium metal slag recycling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209338627U true CN209338627U (en) | 2019-09-03 |
Family
ID=67745818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821715478.2U Withdrawn - After Issue CN209338627U (en) | 2018-10-23 | 2018-10-23 | A kind of lithium metal slag recycling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209338627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371240A (en) * | 2018-10-23 | 2019-02-22 | 天齐锂业（江苏）有限公司 | A kind of lithium metal slag recycling equipment and method |
| CN113839114A (en) * | 2020-06-24 | 2021-12-24 | 天津中能锂业有限公司 | Lithium metal negative electrode recovery |
-
2018
- 2018-10-23 CN CN201821715478.2U patent/CN209338627U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371240A (en) * | 2018-10-23 | 2019-02-22 | 天齐锂业（江苏）有限公司 | A kind of lithium metal slag recycling equipment and method |
| CN109371240B (en) * | 2018-10-23 | 2024-04-30 | 天齐锂业（江苏）有限公司 | Metal lithium slag recycling equipment and method |
| CN113839114A (en) * | 2020-06-24 | 2021-12-24 | 天津中能锂业有限公司 | Lithium metal negative electrode recovery |
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