CN116212765A - Waste lithium material recovery method and system based on ammonium chloride circulation - Google Patents
Waste lithium material recovery method and system based on ammonium chloride circulation Download PDFInfo
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Abstract
The invention provides a waste lithium material recovery system based on ammonium chloride circulation, which comprises: the device comprises a waste lithium material leaching reaction tank, a pump, a waste lithium material leaching filter press, a impurity removal reaction tank, an impurity removal filter press, a pure lithium solution storage tank, a lithium carbonate synthesis reaction kettle, a centrifuge, a drying tower, a crusher, a reaction mother solution storage tank, a washing solution storage tank, an MVR evaporator, an evaporation mother solution storage tank, a solid reaction kettle, an ammonia storage tank, a carbon dioxide storage tank and waste gas absorption and treatment equipment; also provides a waste lithium material recovery method based on ammonium chloride circulation. The invention recycles the ammonium chloride in the system, the waste generated in the whole production process is less, the materials to be purchased are less, the quality of the produced lithium carbonate is high, the standard of the battery-grade lithium carbonate is reached, and the whole process flow is environment-friendly and the cost is low.
Description
Technical Field
The invention belongs to the field of battery manufacturing, and particularly relates to a method and a system for recycling waste lithium materials based on ammonium chloride circulation.
Background
At present, the lithium carbonate production mainly comes from two ways of ore lithium extraction preparation and salt lake brine lithium extraction preparation. Extracting lithium from ore. The raw material adopted by the process is spodumene or lepidolite. Spodumene has mature lithium extraction process, but spodumene mainly depends on import, the ore cost is controlled abroad, and the price is high. The lithium lepidolite has low content, high impurity content and complex lithium extraction process, and is suitable for the production of industrial grade lithium carbonate. Extracting lithium from salt lake brine. Salt lake is a dynamic mineral deposit of multiple mineral species, and is a geologic body formed by combining multiple sources and multiple factors, and the brine has high content of chemical substances such as potassium, boron, magnesium and the like and unstable raw material quality. The brine lithium extraction process is greatly restricted by natural environment and technology, and the production process is not easy to control, so that the fluctuation of yield and quality is large. So far, lithium carbonate produced by extracting lithium from domestic brine is industrial grade lithium carbonate, and the lithium carbonate can be battery grade lithium carbonate after further purification, but the production cost is higher than that of the battery grade lithium carbonate produced by extracting lithium from ores. The recovery and starting of lithium waste generated in the process of recovering nickel and cobalt from lithium ion batteries in chemical industry are relatively late.
Although the prior art discloses some related processes for recycling lithium waste lithium materials, the prior art has the problems that a large amount of industrial salt is generated and a large amount of auxiliary materials are required to be input in the process of recycling the lithium waste materials. In order to solve the problem, the invention circulates the ammonium chloride in the system in the process of recovering the waste lithium material, reduces the discharge of waste and reduces the outsourcing of the material.
Disclosure of Invention
The invention aims to provide a method and a system for recycling waste lithium materials based on ammonium chloride circulation, which recycle the ammonium chloride in the system, and have the advantages of less waste generated in the whole production process, less materials to be purchased, high quality of the produced lithium carbonate, meeting the standard of battery-grade lithium carbonate, environmental friendliness in the whole process flow and low cost.
In one aspect, the invention provides a waste lithium material recovery system based on ammonium chloride circulation, the recovery system comprising: the device comprises a leaching reaction tank, a filter press, a impurity removal reaction tank, an impurity removal filter press, a pure lithium solution storage tank, a lithium carbonate synthesis reaction kettle, a centrifuge, a drying tower, a crusher, a mother solution storage tank, a washing solution storage tank, an MVR evaporator, an evaporation mother solution storage tank, a solid reaction kettle, an ammonia storage tank, a carbon dioxide storage tank and waste gas absorption and treatment equipment;
the outlet of the leaching reaction tank is connected with the inlet of the filter press, the outlet of the filter press is connected with the inlet of the impurity removal reaction tank, the outlet of the impurity removal reaction tank is connected with the inlet of the impurity removal filter press, the outlet of the impurity removal filter press is connected with the inlet of the pure lithium solution storage tank, the outlet of the pure lithium solution storage tank is connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlets of the ammonia storage tank and the carbon dioxide storage tank are connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlet of the lithium carbonate synthesis reaction kettle is connected with the inlet of the centrifuge, the liquid outlet of the centrifuge is connected with the inlet of the mother liquor and the washing liquid storage tank, the outlet of the mother liquor and the washing liquid storage tank is connected with the inlet of the MVR evaporator, the liquid outlet of the MVR evaporator is connected with the inlet of the evaporation mother liquor storage tank, the evaporation mother liquor outlet is connected with the inlet of the impurity removal reaction tank, the solid outlet of the MVR evaporator is connected with the inlet of the solid reaction kettle, the gas outlet of the solid reaction kettle is connected with the ammonia storage tank, the solid outlet of the centrifuge is connected with the inlet of the drying tower, the outlet of the drying tower is connected with the inlet of the crusher, and the absorption inlet of the waste gas absorption and treatment equipment is the impurity removal reaction tank and the impurity removal filter press.
Preferably, a heating system is arranged in both the lithium carbonate synthesis reaction kettle and the solid reaction kettle.
Preferably, metering instruments are arranged between the pure lithium solution storage tank and the lithium carbonate synthesis reaction kettle, between the ammonia storage tank and the lithium carbonate synthesis reaction kettle, and between the carbon dioxide storage tank and the lithium carbonate kettle.
The invention further provides a waste lithium material recovery method based on ammonium chloride circulation, which comprises the following steps of:
step 1, pulping waste lithium materials and water in a leaching reaction tank according to a solid-to-liquid ratio of 1:2-1:10, adding calcium chloride for reaction, filtering by a filter press to obtain a lithium solution and calcium slag, and enabling the lithium solution to enter a impurity removal reaction tank;
step 2, adding ammonia gas into the impurity removal reaction tank to adjust the pH value of the lithium solution to 9-12, filtering by using an impurity removal filter press to obtain pure lithium solution, and enabling the pure lithium solution to enter a lithium carbonate synthesis reaction kettle;
step 3, adding pure lithium solution into a lithium carbonate synthesis reaction kettle, simultaneously introducing ammonia gas and carbon dioxide for reaction, and centrifuging to obtain lithium carbonate and mother liquor, wherein the mother liquor enters a mother liquor and washing liquor storage tank;
washing the lithium carbonate obtained in the step (4) by a centrifugal machine, drying by a drying tower and crushing by a crusher to obtain battery-grade lithium carbonate, and enabling washing water to enter a mother solution and a washing solution storage tank;
step 5, transferring the mother liquor obtained in the step 3 and the mother liquor and washing water obtained in the step 4 into an MVR evaporator through a mother liquor and washing liquid storage tank, and obtaining ammonium chloride crystals and evaporated mother liquor through evaporation and crystallization;
step 6, the evaporation mother liquor is conveyed to a impurity removal reaction tank through a pump, and the evaporation mother liquor returns to the step 2 for impurity removal;
and 7, adding ammonium chloride crystals into a solid reaction kettle, adding calcium hydroxide into the solid reaction kettle, uniformly mixing, heating for reaction, introducing the generated ammonia into an ammonia storage tank, returning to the step 2 and the step 3, and returning to the step 1.
Preferably, in step 1, the waste lithium material includes waste lithium fluoride, waste lithium phosphate and waste lithium carbonate.
Preferably, in step 1, the amount of the added substance of calcium chloride is 0.5 to 0.6 times the amount of the lithium substance, and the reaction is carried out for 1 to 10 hours.
Preferably, in step 3, ammonia and carbon dioxide are added to the pure lithium solution to react for 1-10 hours.
Preferably, in the step 7, ammonium chloride crystals and calcium hydroxide are added into a reaction kettle according to the mol ratio of 1:1, and are uniformly mixed, heated to 70-200 ℃ and reacted for 1-10h.
The invention has the following beneficial effects:
the invention recycles the ammonium chloride in the system, the waste generated in the whole production process is less, the materials to be purchased are less, the quality of the produced lithium carbonate is high, the standard of the battery-grade lithium carbonate is reached, and the whole process flow is environment-friendly and the cost is low.
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For a clearer description of embodiments of the invention or of the solutions of the prior art, reference will be made to the accompanying drawings which are used in the description of embodiments or of the prior art, it being obvious to a person skilled in the art that other drawings can be obtained from these without inventive effort.
FIG. 1 is a schematic diagram of a recovery system of the present invention;
Detailed Description
The features and advantages of the present application will become more apparent and clear from the following detailed description of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left" and "right", etc. are based on the directions or positional relationships in the working state of the present application, are merely for convenience of description and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely in connection with the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
This embodiment provides a useless lithium material recovery system based on ammonium chloride circulation, recovery system includes: the device comprises a leaching reaction tank, a filter press, a impurity removal reaction tank, an impurity removal filter press, a pure lithium solution storage tank, a lithium carbonate synthesis reaction kettle, a centrifuge, a drying tower, a crusher, a mother solution storage tank, a washing solution storage tank, an MVR evaporator, an evaporation mother solution storage tank, a solid reaction kettle, an ammonia storage tank, a carbon dioxide storage tank and waste gas absorption and treatment equipment;
the outlet of the leaching reaction tank is connected with the inlet of the filter press, the outlet of the filter press is connected with the inlet of the impurity removal reaction tank, the outlet of the impurity removal reaction tank is connected with the inlet of the impurity removal filter press, the outlet of the impurity removal filter press is connected with the inlet of the pure lithium solution storage tank, the outlet of the pure lithium solution storage tank is connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlets of the ammonia storage tank and the carbon dioxide storage tank are connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlet of the lithium carbonate synthesis reaction kettle is connected with the inlet of the centrifuge, the liquid outlet of the centrifuge is connected with the inlet of the mother liquor and the washing liquid storage tank, the outlet of the mother liquor and the washing liquid storage tank is connected with the inlet of the MVR evaporator, the liquid outlet of the MVR evaporator is connected with the inlet of the evaporation mother liquor storage tank, the evaporation mother liquor outlet is connected with the inlet of the impurity removal reaction tank, the solid outlet of the MVR evaporator is connected with the inlet of the solid reaction kettle, the gas outlet of the solid reaction kettle is connected with the ammonia storage tank, the solid outlet of the centrifuge is connected with the inlet of the drying tower, the outlet of the drying tower is connected with the inlet of the crusher, and the absorption inlet of the waste gas absorption and treatment equipment is the impurity removal reaction tank and the impurity removal filter press.
In this embodiment, the heating system is provided in both the lithium carbonate synthesis reaction kettle and the solid reaction kettle.
In this embodiment, metering devices are installed between the pure lithium solution storage tank and the lithium carbonate synthesis reaction kettle, between the ammonia storage tank and the lithium carbonate synthesis reaction kettle, and between the carbon dioxide storage tank and the lithium carbonate kettle.
Example 1
A waste lithium material recovery method based on ammonium chloride circulation comprises the following steps:
step 1, pulping waste lithium materials and water in a leaching reaction tank according to a solid-to-liquid ratio of 1:2, adding calcium chloride for reaction, filtering by a filter press to obtain a lithium solution and calcium slag, and enabling the lithium solution to enter a impurity removal reaction tank;
step 2, adding ammonia gas into the impurity removal reaction tank to adjust the pH value of the lithium solution to 9, filtering by using an impurity removal filter press to obtain pure lithium solution, and enabling the pure lithium solution to enter a lithium carbonate synthesis reaction kettle;
step 3, adding pure lithium solution into a lithium carbonate synthesis reaction kettle, simultaneously introducing ammonia gas and carbon dioxide for reaction, and centrifuging to obtain lithium carbonate and mother liquor, wherein the mother liquor enters a mother liquor and washing liquor storage tank;
washing the lithium carbonate obtained in the step (4) by a centrifugal machine, drying by a drying tower and crushing by a crusher to obtain battery-grade lithium carbonate, and enabling washing water to enter a mother solution and a washing solution storage tank;
step 5, transferring the mother liquor obtained in the step 3 and the mother liquor and washing water obtained in the step 4 into an MVR evaporator through a mother liquor and washing liquid storage tank, and obtaining ammonium chloride crystals and evaporated mother liquor through evaporation and crystallization;
step 6, the evaporation mother liquor is conveyed to a impurity removal reaction tank through a pump, and the evaporation mother liquor returns to the step 2 for impurity removal;
and 7, adding ammonium chloride crystals into a solid reaction kettle, adding calcium hydroxide into the solid reaction kettle, uniformly mixing, heating for reaction, introducing the generated ammonia into an ammonia storage tank, returning to the step 2 and the step 3, and returning to the step 1.
In this embodiment, in step 1, the waste lithium material includes waste lithium fluoride, waste lithium phosphate and waste lithium carbonate.
In this example, in step 1, the amount of the added substance of calcium chloride was 0.5 times the amount of the lithium substance, and the reaction was carried out for 10 hours.
In this example, ammonia and carbon dioxide were added to the pure lithium solution in step 3 to react for 10 hours.
In the embodiment, in the step 7, ammonium chloride crystal and calcium hydroxide are added into a reaction kettle according to the mol ratio of 1:1, and are uniformly mixed, heated to 70 ℃ and reacted for 10 hours.
Example 2
A waste lithium material recovery method based on ammonium chloride circulation comprises the following steps:
step 1, pulping waste lithium materials and water in a leaching reaction tank according to a solid-to-liquid ratio of 1:10, adding calcium chloride for reaction, filtering by a filter press to obtain a lithium solution and calcium slag, and enabling the lithium solution to enter a impurity removal reaction tank;
step 2, adding ammonia gas into the impurity removal reaction tank to adjust the pH value of the lithium solution to 12, filtering by using an impurity removal filter press to obtain pure lithium solution, and enabling the pure lithium solution to enter a lithium carbonate synthesis reaction kettle;
step 3, adding pure lithium solution into a lithium carbonate synthesis reaction kettle, simultaneously introducing ammonia gas and carbon dioxide for reaction, and centrifuging to obtain lithium carbonate and mother liquor, wherein the mother liquor enters a mother liquor and washing liquor storage tank;
washing the lithium carbonate obtained in the step (4) by a centrifugal machine, drying by a drying tower and crushing by a crusher to obtain battery-grade lithium carbonate, and enabling washing water to enter a mother solution and a washing solution storage tank;
step 5, transferring the mother liquor obtained in the step 3 and the mother liquor and washing water obtained in the step 4 into an MVR evaporator through a mother liquor and washing liquid storage tank, and obtaining ammonium chloride crystals and evaporated mother liquor through evaporation and crystallization;
step 6, the evaporation mother liquor is conveyed to a impurity removal reaction tank through a pump, and the evaporation mother liquor returns to the step 2 for impurity removal;
and 7, adding ammonium chloride crystals into a solid reaction kettle, adding calcium hydroxide into the solid reaction kettle, uniformly mixing, heating for reaction, introducing the generated ammonia into an ammonia storage tank, returning to the step 2 and the step 3, and returning to the step 1.
In this embodiment, in step 1, the waste lithium material includes waste lithium fluoride, waste lithium phosphate and waste lithium carbonate.
In this example, in step 1, the amount of the added substance of calcium chloride was 0.6 times the amount of the lithium substance, and the reaction was carried out for 1 hour.
In this example, in step 3, ammonia and carbon dioxide were added to the pure lithium solution to react for 1h.
In the embodiment, in the step 7, ammonium chloride crystal and calcium hydroxide are added into a reaction kettle according to the mol ratio of 1:1, and are uniformly mixed, heated to 200 ℃ and reacted for 1h.
Example 3
A waste lithium material recovery method based on ammonium chloride circulation comprises the following steps:
step 1, pulping waste lithium materials and water in a leaching reaction tank according to a solid-to-liquid ratio of 1:5, adding calcium chloride for reaction, filtering by a filter press to obtain a lithium solution and calcium slag, and enabling the lithium solution to enter a impurity removal reaction tank;
step 2, adding ammonia gas into the impurity removal reaction tank to adjust the pH value of the lithium solution to 10, filtering by using an impurity removal filter press to obtain pure lithium solution, and enabling the pure lithium solution to enter a lithium carbonate synthesis reaction kettle;
step 3, adding pure lithium solution into a lithium carbonate synthesis reaction kettle, simultaneously introducing ammonia gas and carbon dioxide for reaction, and centrifuging to obtain lithium carbonate and mother liquor, wherein the mother liquor enters a mother liquor and washing liquor storage tank;
washing the lithium carbonate obtained in the step (4) by a centrifugal machine, drying by a drying tower and crushing by a crusher to obtain battery-grade lithium carbonate, and enabling washing water to enter a mother solution and a washing solution storage tank;
step 5, transferring the mother liquor obtained in the step 3 and the mother liquor and washing water obtained in the step 4 into an MVR evaporator through a mother liquor and washing liquid storage tank, and obtaining ammonium chloride crystals and evaporated mother liquor through evaporation and crystallization;
step 6, the evaporation mother liquor is conveyed to a impurity removal reaction tank through a pump, and the evaporation mother liquor returns to the step 2 for impurity removal;
and 7, adding ammonium chloride crystals into a solid reaction kettle, adding calcium hydroxide into the solid reaction kettle, uniformly mixing, heating for reaction, introducing the generated ammonia into an ammonia storage tank, returning to the step 2 and the step 3, and returning to the step 1.
In this embodiment, in step 1, the waste lithium material includes waste lithium fluoride, waste lithium phosphate and waste lithium carbonate.
In this example, in step 1, the amount of the added substance of calcium chloride was 0.5 times the amount of the lithium substance, and the reaction was carried out for 5 hours.
In this example, in step 3, ammonia and carbon dioxide were added to the pure lithium solution to react for 5 hours.
In the embodiment, in the step 7, ammonium chloride crystal and calcium hydroxide are added into a reaction kettle according to the mol ratio of 1:1, and are uniformly mixed, heated to 100 ℃ and reacted for 5 hours.
The foregoing detailed description has been provided for the purposes of illustration in connection with specific embodiments and exemplary examples, but such description is not to be construed as limiting the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications and improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of the application is defined by the appended claims.
Claims (8)
1. Waste lithium material recovery system based on ammonium chloride circulation, its characterized in that: the recovery system includes: the device comprises a leaching reaction tank, a filter press, a impurity removal reaction tank, an impurity removal filter press, a pure lithium solution storage tank, a lithium carbonate synthesis reaction kettle, a centrifuge, a drying tower, a crusher, a mother solution storage tank, a washing solution storage tank, an MVR evaporator, an evaporation mother solution storage tank, a solid reaction kettle, an ammonia storage tank, a carbon dioxide storage tank and waste gas absorption and treatment equipment;
the outlet of the leaching reaction tank is connected with the inlet of the filter press, the outlet of the filter press is connected with the inlet of the impurity removal reaction tank, the outlet of the impurity removal reaction tank is connected with the inlet of the impurity removal filter press, the outlet of the impurity removal filter press is connected with the inlet of the pure lithium solution storage tank, the outlet of the pure lithium solution storage tank is connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlets of the ammonia storage tank and the carbon dioxide storage tank are connected with the inlet of the lithium carbonate synthesis reaction kettle, the outlet of the lithium carbonate synthesis reaction kettle is connected with the inlet of the centrifuge, the liquid outlet of the centrifuge is connected with the inlet of the mother liquor and the washing liquid storage tank, the outlet of the mother liquor and the washing liquid storage tank is connected with the inlet of the MVR evaporator, the liquid outlet of the MVR evaporator is connected with the inlet of the evaporation mother liquor storage tank, the evaporation mother liquor outlet is connected with the inlet of the impurity removal reaction tank, the solid outlet of the MVR evaporator is connected with the inlet of the solid reaction kettle, the gas outlet of the solid reaction kettle is connected with the ammonia storage tank, the solid outlet of the centrifuge is connected with the inlet of the drying tower, the outlet of the drying tower is connected with the inlet of the crusher, and the absorption inlet of the waste gas absorption and treatment equipment is the impurity removal reaction tank and the impurity removal filter press.
2. The system for recycling waste lithium materials based on ammonium chloride cycle according to claim 1, wherein: and a heating system is arranged in both the lithium carbonate synthesis reaction kettle and the solid reaction kettle.
3. The system for recycling waste lithium materials based on ammonium chloride cycle according to claim 1, wherein: metering instruments are arranged between the pure lithium solution storage tank and the lithium carbonate synthesis reaction kettle, between the ammonia storage tank and the lithium carbonate synthesis reaction kettle, and between the carbon dioxide storage tank and the lithium carbonate kettle.
4. A method for recycling waste lithium materials based on ammonium chloride circulation is characterized by comprising the following steps: the method comprises the following steps:
step 1, pulping waste lithium materials and water in a leaching reaction tank according to a solid-to-liquid ratio of 1:2-1:10, adding calcium chloride for reaction, filtering by a filter press to obtain a lithium solution and calcium slag, and enabling the lithium solution to enter a impurity removal reaction tank;
step 2, adding ammonia gas into the impurity removal reaction tank to adjust the pH value of the lithium solution to 9-12, filtering by using an impurity removal filter press to obtain pure lithium solution, and enabling the pure lithium solution to enter a lithium carbonate synthesis reaction kettle;
step 3, adding pure lithium solution into a lithium carbonate synthesis reaction kettle, simultaneously introducing ammonia gas and carbon dioxide for reaction, and centrifuging to obtain lithium carbonate and mother liquor, wherein the mother liquor enters a mother liquor and washing liquor storage tank;
washing the lithium carbonate obtained in the step (4) by a centrifugal machine, drying by a drying tower and crushing by a crusher to obtain battery-grade lithium carbonate, and enabling washing water to enter a mother solution and a washing solution storage tank;
step 5, transferring the mother liquor obtained in the step 3 and the mother liquor and washing water obtained in the step 4 into an MVR evaporator through a mother liquor and washing liquid storage tank, and obtaining ammonium chloride crystals and evaporated mother liquor through evaporation and crystallization;
step 6, the evaporation mother liquor is conveyed to a impurity removal reaction tank through a pump, and the evaporation mother liquor returns to the step 2 for impurity removal;
and 7, adding ammonium chloride crystals into a solid reaction kettle, adding calcium hydroxide into the solid reaction kettle, uniformly mixing, heating for reaction, introducing the generated ammonia into an ammonia storage tank, returning to the step 2 and the step 3, and returning to the step 1.
5. The method for recycling waste lithium materials based on ammonium chloride circulation according to claim 1, wherein the method comprises the following steps: in the step 1, the waste lithium material comprises waste lithium fluoride, waste lithium phosphate and waste lithium carbonate.
6. The method for recycling waste lithium materials based on ammonium chloride circulation according to claim 1, wherein the method comprises the following steps: in the step 1, the added substance amount of the calcium chloride is 0.5-0.6 times of the lithium substance amount, and the reaction is carried out for 1-10h.
7. The method for recycling waste lithium materials based on ammonium chloride circulation according to claim 1, wherein the method comprises the following steps: in the step 3, ammonia and carbon dioxide are added into the pure lithium solution to react for 1-10h.
8. The method for recycling waste lithium materials based on ammonium chloride circulation according to claim 1, wherein the method comprises the following steps: in the step 7, ammonium chloride crystal and calcium hydroxide are added into a reaction kettle according to the mol ratio of 1:1, and are uniformly mixed, heated to 70-200 ℃ and reacted for 1-10h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116845410A (en) * | 2023-07-25 | 2023-10-03 | 湖南德景源科技有限公司 | Method for recycling valuable metals from waste ternary lithium battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116845410A (en) * | 2023-07-25 | 2023-10-03 | 湖南德景源科技有限公司 | Method for recycling valuable metals from waste ternary lithium battery |
| CN116845410B (en) * | 2023-07-25 | 2024-03-15 | 湖南德景源科技有限公司 | Method for recycling valuable metals from waste ternary lithium battery |
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