CN111261887A - Lithium thionyl chloride battery resource recovery method - Google Patents
Lithium thionyl chloride battery resource recovery method Download PDFInfo
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- CN111261887A CN111261887A CN202010287516.4A CN202010287516A CN111261887A CN 111261887 A CN111261887 A CN 111261887A CN 202010287516 A CN202010287516 A CN 202010287516A CN 111261887 A CN111261887 A CN 111261887A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/52—Reclaiming serviceable parts of waste cells or batteries, e.g. recycling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The invention discloses a lithium chloroidene battery resource recovery method, which comprises the following steps: splitting the lithium sub-battery, disassembling the metal sheets of the anode and the cathode at the top end and the bottom end of the lithium sub-battery, and then collecting and processing the metal sheets of the anode and the cathode in a centralized manner; collecting electrolyte, namely leaking the electrolyte in the lithium secondary battery main body, and collecting the electrolyte by using a utensil; precipitating lithium chloride, adding hydrochloric acid into the electrolyte to enable substances in the electrolyte to react with the hydrochloric acid to generate lithium chloride, and then heating the mixture of the electrolyte and the hydrochloric acid to enable water in the mixture to evaporate, so that lithium chloride crystals are precipitated; and (3) precipitating lithium carbonate, dissolving the precipitated lithium chloride crystals in purified water to form a lithium chloride solution, then adding a sodium carbonate solution into the lithium chloride solution, reacting the lithium chloride with the sodium carbonate to generate lithium carbonate, and filtering the mixed solution to obtain lithium carbonate crystals.
Description
Technical Field
The invention relates to a method for recovering battery resources, in particular to a method for recovering lithium chlorite battery resources, and belongs to the technical field of lithium batteries.
Background
The lithium battery is a primary battery using lithium metal or lithium alloy as a negative electrode material and using a non-aqueous electrolyte solution, unlike a lithium ion battery, which is a rechargeable battery, and a lithium ion polymer battery. The inventor of lithium batteries was edison. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, lithium batteries have not been used for a long time. With the development of microelectronic technology at the end of the twentieth century, miniaturized devices are increasing, and high requirements are made on power supplies. The lithium battery has then entered a large-scale practical stage.
At present, no reasonable method exists for recycling lithium battery resources, electrolyte of the lithium battery can only be discarded at will, and therefore not only is the environment polluted, but also resources are wasted. Therefore, a method for recovering lithium vinylidene chloride battery resources is proposed to solve the above problems.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for recovering a lithium vinylidene chloride battery resource.
The invention realizes the aim through the following technical scheme, and the method for recycling the lithium chlorite battery resource is characterized by comprising the following steps of: the method for recovering the lithium chlorite battery resource comprises the following steps:
(1) splitting the lithium sub-battery, fixedly clamping the lithium sub-battery on a clamp, disassembling the metal sheets of the positive and negative electrodes at the top end and the bottom end of the lithium sub-battery by using a pair of pliers, and then collecting the metal sheets of the positive and negative electrodes in a centralized manner;
(2) collecting electrolyte, leaking the electrolyte in the lithium secondary battery, collecting the electrolyte by using a vessel, and sealing the vessel by using a protective cover so as to seal and protect the electrolyte;
(3) precipitating lithium chloride, adding hydrochloric acid into the electrolyte to enable substances in the electrolyte to react with the hydrochloric acid to generate lithium chloride, and then heating the mixture of the electrolyte and the hydrochloric acid to enable water in the mixture to evaporate, so that lithium chloride crystals are precipitated;
(4) and (3) precipitating lithium carbonate, dissolving the precipitated lithium chloride crystals in purified water to form a lithium chloride solution, then adding a sodium carbonate solution into the lithium chloride solution, reacting the lithium chloride with the sodium carbonate to generate lithium carbonate, wherein the lithium carbonate is slightly soluble in water, and then the lithium carbonate is precipitated at the bottom of the solution, and then filtering the mixed solution to obtain lithium carbonate crystals.
Preferably, in the step (1), the taken-out positive and negative metal sheets are firstly cleaned by using organic oil, organic matters adhered to the positive and negative metal sheets are cleaned, so that the surfaces of the positive and negative metal sheets are clean, then the positive and negative metal sheets are placed in a drying box and dried, and the cleaning of the positive and negative metal sheets is completed.
Preferably, in the step (2), a glass fiber reinforced plastic container is used for collection, and a label is adhered on the surface of the glass fiber reinforced plastic container for labeling.
Preferably, the mass fraction of the hydrochloric acid used in the step (3) is 10% -36%.
Preferably, the mass fraction of the sodium carbonate solution used in the step (4) is 10% -21%.
Preferably, after the sodium carbonate solution is added in the step (4), the mixed solution is stirred by using a glass rod to accelerate the reaction between the lithium chloride and the sodium carbonate, and then the mixed solution is placed in a higher temperature environment to stand for a period of time, so that the lithium carbonate is precipitated conveniently.
Preferably, after the hydrochloric acid solution is added in the step (3), the mixed solution is placed in a low-temperature environment for reaction, so that the phenomenon that hydrogen chloride gas is dispersed from hydrochloric acid due to overhigh ambient temperature and the concentration of hydrochloric acid is reduced, and incomplete precipitation of lithium chloride is avoided.
Preferably, the bottom end of the end cover in the step (2) is fixedly provided with a sealing ring, so that the outer side of the sealing ring is attached to the inner wall of the vessel, and impurities in the air are prevented from entering the vessel to pollute the electrolyte.
Preferably, in the step (4), the lithium carbonate crystals which are easy to mix in the medium and large particles are firstly filtered by using a filter screen, and then the lithium carbonate crystals which are easy to mix in the medium and large particles are filtered by using filter paper again.
Preferably, the filtered lithium carbonate crystals in the step (4) are placed in a ventilation position for air drying.
The invention has the beneficial effects that: according to the invention, the lithium subcell is disassembled, the metal sheets of the positive and negative electrodes at the top end and the bottom end of the lithium subcell are disassembled, then the metal sheets of the positive and negative electrodes are collected and processed in a centralized manner, the electrolyte in the lithium subcell is collected, hydrochloric acid is added, so that substances in the electrolyte react with the hydrochloric acid to generate lithium chloride, the mixture of the electrolyte and the hydrochloric acid is heated to separate out lithium chloride crystals, the separated lithium chloride crystals are dissolved in purified water, sodium carbonate solution is added into the lithium chloride solution to obtain lithium carbonate crystals, and the problems that no reasonable method exists for recycling lithium battery resources, the electrolyte of the lithium battery can only be discarded at any time, the environment is polluted, and resources are wasted are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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 technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The first embodiment is as follows:
a method for recycling lithium chlorite battery resources comprises the following steps:
(1) splitting the lithium sub-battery, fixedly clamping the lithium sub-battery on a clamp, disassembling the metal sheets of the positive and negative electrodes at the top end and the bottom end of the lithium sub-battery by using a pair of pliers, and then collecting the metal sheets of the positive and negative electrodes in a centralized manner;
(2) collecting electrolyte, leaking the electrolyte in the lithium secondary battery, collecting the electrolyte by using a vessel, and sealing the vessel by using a protective cover so as to seal and protect the electrolyte;
(3) precipitating lithium chloride, adding hydrochloric acid into the electrolyte to enable substances in the electrolyte to react with the hydrochloric acid to generate lithium chloride, and then heating the mixture of the electrolyte and the hydrochloric acid to enable water in the mixture to evaporate, so that lithium chloride crystals are precipitated;
(4) and (3) precipitating lithium carbonate, dissolving the precipitated lithium chloride crystals in purified water to form a lithium chloride solution, then adding a sodium carbonate solution into the lithium chloride solution, reacting the lithium chloride with the sodium carbonate to generate lithium carbonate, wherein the lithium carbonate is slightly soluble in water, and then the lithium carbonate is precipitated at the bottom of the solution, and then filtering the mixed solution to obtain lithium carbonate crystals.
Further, in the step (1), the taken-out positive and negative metal sheets are firstly cleaned by using organic oil, organic matters adhered to the positive and negative metal sheets are cleaned, so that the surfaces of the positive and negative metal sheets are clean, then the positive and negative metal sheets are placed in a drying box and dried, and the cleaning of the positive and negative metal sheets is completed.
Further, in the step (2), a glass fiber reinforced plastic container is used for collection, and a label is adhered to the surface of the glass fiber reinforced plastic container for labeling.
Further, the mass fraction of hydrochloric acid used in the step (3) is 10%.
Further, the mass fraction of the sodium carbonate solution used in the step (4) is 10%.
Further, after the sodium carbonate solution is added in the step (4), the mixed solution is stirred by using a glass rod to accelerate the reaction of the lithium chloride and the sodium carbonate, and then the mixed solution is placed in a higher-temperature environment to stand for a period of time, so that the lithium carbonate is precipitated conveniently.
Further, after the hydrochloric acid solution is added in the step (3), the mixed solution is placed in a low-temperature environment for reaction, so that the phenomenon that hydrogen chloride gas is dispersed from hydrochloric acid due to overhigh ambient temperature, the concentration of the hydrochloric acid is reduced, and the lithium chloride is incompletely separated out is avoided.
Further, the bottom end of the end cover in the step (2) is fixedly provided with a sealing ring, so that the outer side of the sealing ring is attached to the inner wall of the vessel, and impurities in the air are prevented from entering the interior of the vessel to pollute the electrolyte.
Further, in the step (4), the lithium carbonate crystals which are easy to mix in the medium and large particles are firstly filtered out by using a filter screen, and then the lithium carbonate crystals which are easy to mix in the medium and large particles are filtered out by using filter paper again.
Further, in the step (4), the filtered lithium carbonate crystals are placed in a ventilation position for air drying.
The method is suitable for the battery resource recycling method with long electrolyte service time in old batteries.
Example two:
a method for recycling lithium chlorite battery resources comprises the following steps:
(1) splitting the lithium sub-battery, fixedly clamping the lithium sub-battery on a clamp, disassembling the metal sheets of the positive and negative electrodes at the top end and the bottom end of the lithium sub-battery by using a pair of pliers, and then collecting the metal sheets of the positive and negative electrodes in a centralized manner;
(2) collecting electrolyte, leaking the electrolyte in the lithium secondary battery, collecting the electrolyte by using a vessel, and sealing the vessel by using a protective cover so as to seal and protect the electrolyte;
(3) precipitating lithium chloride, adding hydrochloric acid into the electrolyte to enable substances in the electrolyte to react with the hydrochloric acid to generate lithium chloride, and then heating the mixture of the electrolyte and the hydrochloric acid to enable water in the mixture to evaporate, so that lithium chloride crystals are precipitated;
(4) and (3) precipitating lithium carbonate, dissolving the precipitated lithium chloride crystals in purified water to form a lithium chloride solution, then adding a sodium carbonate solution into the lithium chloride solution, reacting the lithium chloride with the sodium carbonate to generate lithium carbonate, wherein the lithium carbonate is slightly soluble in water, and then the lithium carbonate is precipitated at the bottom of the solution, and then filtering the mixed solution to obtain lithium carbonate crystals.
Further, in the step (1), the taken-out positive and negative metal sheets are firstly cleaned by using organic oil, organic matters adhered to the positive and negative metal sheets are cleaned, so that the surfaces of the positive and negative metal sheets are clean, then the positive and negative metal sheets are placed in a drying box and dried, and the cleaning of the positive and negative metal sheets is completed.
Further, in the step (2), a glass fiber reinforced plastic container is used for collection, and a label is adhered to the surface of the glass fiber reinforced plastic container for labeling.
Further, the mass fraction of hydrochloric acid used in the step (3) is 36%.
Further, the mass fraction of the sodium carbonate solution used in the step (4) is 21%.
Further, after the sodium carbonate solution is added in the step (4), the mixed solution is stirred by using a glass rod to accelerate the reaction of the lithium chloride and the sodium carbonate, and then the mixed solution is placed in a higher-temperature environment to stand for a period of time, so that the lithium carbonate is precipitated conveniently.
Further, after the hydrochloric acid solution is added in the step (3), the mixed solution is placed in a low-temperature environment for reaction, so that the phenomenon that hydrogen chloride gas is dispersed from hydrochloric acid due to overhigh ambient temperature, the concentration of the hydrochloric acid is reduced, and the lithium chloride is incompletely separated out is avoided.
Further, the bottom end of the end cover in the step (2) is fixedly provided with a sealing ring, so that the outer side of the sealing ring is attached to the inner wall of the vessel, and impurities in the air are prevented from entering the interior of the vessel to pollute the electrolyte.
Further, in the step (4), the lithium carbonate crystals which are easy to mix in the medium and large particles are firstly filtered out by using a filter screen, and then the lithium carbonate crystals which are easy to mix in the medium and large particles are filtered out by using filter paper again.
Further, in the step (4), the filtered lithium carbonate crystals are placed in a ventilation position for air drying.
The method is suitable for the battery resource recovery method with short electrolyte service time in the new battery
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for recycling lithium chlorite battery resources is characterized by comprising the following steps: the method for recovering the lithium chlorite battery resource comprises the following steps:
(1) splitting the lithium sub-battery, fixedly clamping the lithium sub-battery on a clamp, disassembling the metal sheets of the positive and negative electrodes at the top end and the bottom end of the lithium sub-battery by using a pair of pliers, and then collecting the metal sheets of the positive and negative electrodes in a centralized manner;
(2) collecting electrolyte, leaking the electrolyte in the lithium secondary battery, collecting the electrolyte by using a vessel, and sealing the vessel by using a protective cover so as to seal and protect the electrolyte;
(3) precipitating lithium chloride, adding hydrochloric acid into the electrolyte to enable substances in the electrolyte to react with the hydrochloric acid to generate lithium chloride, and then heating the mixture of the electrolyte and the hydrochloric acid to enable water in the mixture to evaporate, so that lithium chloride crystals are precipitated;
(4) and (3) precipitating lithium carbonate, dissolving the precipitated lithium chloride crystals in purified water to form a lithium chloride solution, then adding a sodium carbonate solution into the lithium chloride solution, reacting the lithium chloride with the sodium carbonate to generate lithium carbonate, wherein the lithium carbonate is slightly soluble in water, and then the lithium carbonate is precipitated at the bottom of the solution, and then filtering the mixed solution to obtain lithium carbonate crystals.
2. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: in the step (1), the taken-out positive and negative metal sheets are firstly cleaned by using organic oil, organic matters adhered to the positive and negative metal sheets are cleaned, so that the surfaces of the positive and negative metal sheets are clean, then the positive and negative metal sheets are placed in a drying box and dried, and the positive and negative metal sheets are cleaned.
3. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: and (3) collecting by using a glass fiber reinforced plastic container in the step (2), and pasting a label on the surface of the glass fiber reinforced plastic container for labeling.
4. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: the mass fraction of the hydrochloric acid used in the step (3) is 10-36%.
5. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: the mass fraction of the sodium carbonate solution used in the step (4) is 10-21%.
6. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: and (4) stirring the mixed solution by using a glass rod after adding the sodium carbonate solution in the step (4), accelerating the reaction of the lithium chloride and the sodium carbonate, and then standing the mixed solution in a higher temperature environment for a period of time, so that the lithium carbonate can be separated out conveniently.
7. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: after the hydrochloric acid solution is added in the step (3), the mixed solution is placed in a low-temperature environment for reaction, so that the phenomenon that hydrogen chloride gas is dispersed from hydrochloric acid due to overhigh ambient temperature is avoided, the concentration of the hydrochloric acid is reduced, and the lithium chloride is not completely separated out.
8. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: and (3) fixedly mounting a sealing ring at the bottom end of the end cover in the step (2), so that the outer side of the sealing ring is attached to the inner wall of the vessel, and impurities in the air are prevented from entering the interior of the vessel to pollute the electrolyte.
9. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: in the step (4), the lithium carbonate crystals which are easy to mix in the medium and large particles are firstly filtered by using a filter screen, and then the lithium carbonate crystals which are easy to mix in the medium and large particles are filtered again by using filter paper, so that the lithium carbonate crystals with small particles are filtered.
10. The method for recycling a lithium vinylidene chloride battery resource according to claim 1, wherein: and (4) placing the filtered lithium carbonate crystals in a ventilation position for air drying.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113707899A (en) * | 2021-08-24 | 2021-11-26 | 深圳市泰力废旧电池回收技术有限公司 | Method for recycling waste lithium thionyl chloride battery resources |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113707899A (en) * | 2021-08-24 | 2021-11-26 | 深圳市泰力废旧电池回收技术有限公司 | Method for recycling waste lithium thionyl chloride battery resources |
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