WO2024080754A1 - 유가 금속 회수용 리튬 화합물 및 이의 제조 방법 - Google Patents
유가 금속 회수용 리튬 화합물 및 이의 제조 방법 Download PDFInfo
- Publication number
- WO2024080754A1 WO2024080754A1 PCT/KR2023/015650 KR2023015650W WO2024080754A1 WO 2024080754 A1 WO2024080754 A1 WO 2024080754A1 KR 2023015650 W KR2023015650 W KR 2023015650W WO 2024080754 A1 WO2024080754 A1 WO 2024080754A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- less
- lithium compound
- recovering
- lithium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/043—Lithium aluminates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/04—Halides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/08—Carbonates; Bicarbonates
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
-
- 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
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
Definitions
- This relates to waste batteries, a lithium compound for recovering valuable metals recovered from waste battery recycling, and a method for producing the same.
- lithium secondary batteries which are the main raw materials for the waste batteries, organic solvents, explosive substances, and heavy metal substances such as Ni, Co, Mn, and Fe are contained.
- Ni, Co, Mn, and Li valuable metals are contained. It has great scarcity value, and the recovery and recycling process after lithium secondary batteries are discarded is emerging as an important research field.
- a lithium secondary battery is mainly comprised of copper and aluminum used as a current collector, oxides containing Li, Ni, Co, and Mn that make up the positive electrode material, and graphite used as a negative electrode material. It includes a separator that separates the negative electrode material and an electrolyte solution injected into the separator.
- the solvent (Solvent0) constituting the electrolyte solution and the solvent used as salt are mainly used as a mixture of carbonate organic substances such as Ethylene Carbonate and Propylene Carbonate, for example, LiPF 6 is used. there is.
- waste battery recycling process In order to utilize the waste batteries, there is growing interest in a waste battery recycling process that crushes the waste batteries to produce intermediate materials such as waste battery shreds or black powder and then recovers valuable metals through a post-process.
- the main components of waste batteries are composed of expensive and valuable metal elements such as Ni, Co, Mn, and Li.
- the waste battery is, for example, a battery that has reached the end of its life by using a secondary battery in a cycle of 5 to 10 years, and recycling the main components of the waste battery is essential from environmental and cost aspects.
- the waste battery undergoes normal crushing, grinding, or gravity sorting to produce a mixture of cathode material and cathode material in the form of black powder, which is an intermediate product.
- the valuable metals essential for battery production are recovered from the black powder produced in this way through wet processes such as leaching, solvent extraction, or crystallization. Through this, the supply of raw materials can be smoothened and battery manufacturing costs can be dramatically reduced.
- the batteries In order to recycle waste batteries, the batteries must be physically disassembled, and physical disassembly is a very dangerous task because it is linked to safety issues such as battery explosion or electric shock. After physical decomposition, a hole is drilled in the battery and discharge is performed in salt water. After the battery has been completely discharged, it is shredded and then subjected to high-temperature heat treatment to remove water and electrolyte.
- the salt used contains a large amount of impurities such as Na, K, Mg, and Ca, which are present together with the spent battery.
- impurities such as Na, K, Mg, and Ca
- Cl a certain portion is removed through high-temperature heat treatment, but black powder produced from shredded waste batteries or shredded materials contains impurities Na, K, and Mg.
- the shredded material is obtained by shredding the battery in the same manner as the battery, and the black powder is made by further processing the shredded material to remove Al, Cu, and part of the separator, and containing a mixture of oxides of Ni-Co-Mn-Li-O and C. It is in powder form.
- oxygen is removed from the oxide, and an alloy of Ni-Co-Mn-Cu, a compound containing lithium, carbon, and ash containing carbon are generated.
- the impurities included Na, K, and Mg act as impurities during wet treatment.
- Na, K, Mg, and Ca act as impurities for Li.
- a process such as causticization (NaOH) used in wet recovery it causes a process load, which increases processing time and costs.
- CaOH causticization
- the lithium compound for recovering valuable metals increases the operating efficiency of a wet process, reduces facility maintenance costs, and provides a lithium compound component with a low impurity content.
- a method for producing a lithium compound for valuable metal recovery provides a method for producing a lithium compound having the above-described advantages.
- the lithium compound is a lithium compound for recovering valuable metals recovered from waste batteries, and includes Li, Al, and impurities, and the impurities are Na: 1.8 wt% or less (0 wt% or less), K: 0.06 wt% or less (excluding 0 wt%), Ca: 0.62 wt% or less (0 wt% or less), and Mg: 0.47 wt% or less (excluding 0 wt%), and the formula below: 1 can be satisfied.
- the lithium compound may satisfy Equation 2 below.
- the lithium compound may satisfy Equation 3 below.
- a method for recovering a lithium compound for recovering valuable metals includes preparing a battery, freezing and forcibly discharging the battery, shredding the battery, and heating the shredded battery material.
- the heating step is performed in a temperature range of 1,100 to 1,400° C.
- the vacuum degree (LogP[atm]) in the heating step is performed in the range of -4 to 0, and the heating step is performed in the range of -4 to 0.
- the lithium compound recovered contains impurities, and the impurities are, in weight percentage, Na: 1.8 wt% or less (excluding 0 wt%), K: 0.06 wt% or less (excluding 0 wt%), Ca: 0.62 wt% or less. (0 wt% or less), and Mg: 0.47 wt% or less (excluding 0 wt%).
- the lithium compound recovered through the heating step may contain 13.0 wt% or more of lithium in weight percent.
- a method for recovering a lithium compound for recovering valuable metals may satisfy Equation 2 below.
- the step of heating the shredded battery shredded material may be performed in a gas atmosphere of at least one of inert gas, carbon dioxide, carbon monoxide, and hydrocarbon gas.
- the step of freezing and forcibly discharging the battery may be performed by cooling to -150 to -60 °C.
- the step of freezing and forcibly discharging the battery may be performed by cooling to -60 to -20 °C under vacuum atmosphere conditions of 1000 torr or less. In one embodiment, the step of freezing and forcibly discharging the battery may satisfy Equation 4 below.
- freezing and force discharging the battery may be performed at a discharge rate of less than 0.04 V/min.
- the lithium compound for recovering valuable metals is a lithium compound with a low content of impurities such as Na, K, Mg, and Ca by controlling the temperature and pressure in the heat treatment step in the valuable metal recovery method.
- a method for producing a lithium compound for recovering valuable metals provides a method for recovering valuable metals for producing a lithium compound having the above-described advantages.
- 1 is a graph of minimum cooling time, according to one embodiment of the present invention.
- Figure 2 is a graph showing the relationship between battery weight, external cooling temperature, and cooling time, according to an embodiment of the present invention.
- Figures 3A and 3B are photos of a fire occurring when shredded after freezing for less than the minimum cooling time according to the comparative example of the present invention
- Figures 3c and 3d are pictures showing the fire occurring when shredded after freezing for longer than the minimum cooling time according to the embodiment of the present invention. This is a photo of an example in which a fire did not occur.
- Figure 4 is a photograph of an evaluation of the amount of expansion according to the discharge rate of a battery cell, according to an embodiment of the present invention.
- Figure 5 shows the results of XRD analysis of a lithium compound produced after high-temperature heat treatment according to an embodiment of the present invention.
- 6A to 6D are graphs showing the correlation between temperature and pressure for removing impurities according to an embodiment of the present invention.
- first, second, and third are used to describe, but are not limited to, various parts, components, regions, layers, and/or sections. These terms are used only to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, the first part, component, region, layer or section described below may be referred to as the second part, component, region, layer or section without departing from the scope of the present invention.
- the lithium compound for recovering valuable metals is a lithium compound for recovering valuable metals recovered from a waste battery, and includes Li, Al, and impurities.
- the impurities may include Na, K, Ca, and Mg.
- the lithium compound for recovering valuable metals may satisfy Equation 1 below.
- Equation 1 above refers to the molar ratio of aluminum to lithium. Equation 1 above may satisfy 1.30 or less, specifically, 0.61 or less. By satisfying Equation 1, there is an advantage that the variation in Li recovery rate is minimized by recovering Li in the form of stable aluminate such as LiAlO 2 or Li 5 AlO 4. Equation 1 covers the above-mentioned range. If not satisfied, Li is recovered in the form of alumina such as Al 2 O 3 rather than in the form of aluminate, which increases the process cost for removing Al impurities.
- the lithium compound may satisfy Equation 2 below.
- Equation 2 above is a relational expression for the ratio of the content of impurities and can be used as a measure of the impurity removal concentration.
- Na and K are impurities that are relatively easy to remove, but Mg and Ca can be removed only when the temperature is high and the vacuum degree is low. Therefore, through Equation 2, impurities, specifically Na and K It can be used as a measure of whether the removal has been sufficient.
- Equation 2 may satisfy the range of 3.6 or less, specifically, 2.0 to 3.6, and more specifically, 2.2 to 3.2. If Equation 2 is outside the above-mentioned range, there is a problem in which impurities cannot be properly removed.
- the lithium compound may satisfy Equation 3 below.
- Equation 3 it was confirmed that elements with strong oxidizing power at high temperatures, such as Li and Al, produce reaction products such as LiAlO 2 or Li 5 AlO 4 that are stable at high temperatures.
- the reaction of Li in the Al cover or Al current collector of the LiB battery and the cathode material occurs stably according to the above relational equation, and by satisfying the above equation 3, the Li recovery rate can be improved. It was confirmed that there was an advantage.
- a method of recovering a lithium compound for recovering valuable metals includes preparing a battery, freezing and forcibly discharging the battery, shredding the battery, and heating the shredded battery material. Includes steps. By going through the step of heating the battery shredded material, various types of lithium compounds can be generated or recovered from the lithium oxide (Li 2 O) contained in the cathode material.
- the step of preparing the battery is a step of preparing by crushing the material that becomes the base material of the battery shredder, or preparing the shredded material itself.
- the base material of the battery shredded material may include batteries that have reached the end of their life, waste batteries, and waste materials generated during the manufacturing process of lithium ion batteries.
- the waste battery may include positive electrode materials such as scrap, jelly roll, and slurry that constitute the waste battery, defective products generated during the manufacturing process, residues within the manufacturing process, and generated debris.
- the shredded material itself may be a shredded product such as black powder. In this way, by recycling waste batteries, there is an environmentally friendly and economical advantage of manufacturing shredded batteries.
- the step of freezing and forcibly discharging the battery may be performed by cooling the battery to a temperature ranging from -150 to -60°C. If the temperature exceeds the upper limit of the temperature range, the voltage remaining inside the battery does not drop to 0 V, which may cause a battery reaction due to a short circuit, and there may be a problem in which the electrolyte is not completely frozen.
- the step of freezing and forcibly discharging the battery may be performed by cooling to -60 to -20 °C under vacuum atmosphere conditions of 1000 torr or less.
- the step of freezing and force discharging the battery is performed at a temperature sufficient to freeze the electrolyte contained in the battery.
- the steps of freezing and force discharging the battery may be performed in a temperature range of, for example, -150 to -20°C. More specifically, the temperature range may be -150 to -50°C, more specifically, -80 to -60°C.
- the slightly remaining voltage inside the battery for example, about 2 V to 3 V, decreases close to 0 V, resulting in a short circuit in which the positive and negative electrodes are in direct contact. Even if it occurs, since a battery reaction does not occur, the battery temperature does not increase, and gas generation and combustion of the electrolyte do not occur.
- the electrolyte is in a frozen state or a state in which evaporation is suppressed, the mobility of lithium ions is very low, and the current conduction characteristics due to the movement of lithium ions may be significantly reduced, and since evaporation of the electrolyte solution does not occur, ethylene ion , propylene, and hydrogen may not be generated.
- the battery processing method has the advantage of preventing the risk of fire that may occur during the battery shredding process by including the step of freezing the battery, such as a lithium secondary battery, before shredding.
- the step of freezing and force discharging the battery is performed under conditions of supplying inert gas, carbon dioxide, nitrogen, water, or a combination thereof. Alternatively, it can be carried out under vacuum atmosphere conditions of 100 torr or less.
- the battery freezing process is carried out by cooling in a temperature range of -60 to -20 °C, if carried out under the above-mentioned conditions, the supply of oxygen can be suppressed to prevent the electrolyte from reacting with oxygen. This can prevent explosions and suppress evaporation of the electrolyte, preventing the generation of flammable gases such as ethylene, propylene, or hydrogen.
- the step of freezing and force discharging the battery may satisfy Equation 4 below.
- the minimum cooling time in Equation 4 refers to the weight of the battery, for example, the weight of a battery pack, a single battery, or a combination thereof.
- the minimum cooling time is an external cooling temperature that is the cooling temperature applied to the battery, and means, for example, a target temperature for cooling the electrolyte in the battery.
- the step of freezing and forcibly discharging the battery has the advantage of allowing the electrolyte inside the battery to cool and stably perform subsequent processes by performing the minimum cooling time or longer.
- the step of freezing and force discharging the battery there is a problem that if the battery is frozen for a time less than the minimum cooling time, the electrolyte is not cooled and a risk of fire may occur during shredding.
- freezing and force discharging the battery may be performed at a discharge rate of less than 0.04 V/min.
- the forced discharge may be performed at a discharge rate of 0.03 V/min. If the discharge rate is outside the range, the expansion amount of the battery increases and stability deteriorates.
- the step of shredding the battery may mean a process of applying shock or pressure to the battery so that a part of the battery falls off.
- the step of shredding the battery may mean a process of crushing the battery, a process of cutting the battery, a process of compressing the battery, and a combination thereof.
- the shredding step may include all processes that can destroy the battery and obtain small-sized shredded products.
- the step of shredding the battery may include compressing the frozen and discharged battery or destroying the battery by applying an external force such as shear force or tensile force.
- the step of shredding the battery can be performed, for example, using a shredder.
- the step of shredding the battery may be performed at least once.
- the crushing step may be performed continuously or discontinuously at least once.
- the step of shredding the battery may be performed so that the maximum size of the shredded battery is 100 mm or less.
- the size of the battery shredded material may be 50 mm or less.
- the exothermic temperature generated due to instability as the battery shredded material is shredded increases to the 120 °C temperature range, which is the average vaporization temperature of the electrolyte, causing stability problems such as fire occurrence. Problems may arise.
- the shredded battery material can be raised to a temperature above the melting point by putting the shredded battery material into a heating furnace capable of raising the temperature to a high temperature.
- the step of heating the crushed material may involve heat treatment conditions that perform a high-temperature reduction reaction without going through the melting step.
- the step of heating the shredded battery material may be performed in the range of 1,100 to 1,400 °C. Specifically, the above range may be carried out in the range of 1,200 to 1,400°C.
- the reduction reaction can be performed with minimal carbon dioxide generation by burning the carbon in the battery shredded material to a minimum. If the temperature range is outside the upper limit of the above range, there is a problem of loss of lithium due to evaporation. If the temperature range is outside the lower limit of the above range, there is a problem in which sintering and reduction of the alloy elements cannot proceed.
- the step of heating the shredded battery material may be performed in a vacuum degree (LogP[atm]) in the range of -4.0 to 0.
- the vacuum degree may be in the range of -4.0 to -1.0, more specifically -3.6 to -1.0.
- the vacuum degree means the logarithmic value of the pressure (P) in the heating furnace.
- the concentration of impurities Na, K, Ca, and Mg is reduced. If the vacuum degree is outside the upper limit of the above range, there is a problem in which impurities cannot be removed because Na, K, Ca, and Mg are not vaporized, and if the vacuum degree is outside the lower limit of the above range, the vaporization of Li may occur. There is a problem that the Li real number decreases.
- the step of heating the shredded battery shredded material may be performed in a gas atmosphere of at least one of inert gas, carbon dioxide, carbon monoxide, and hydrocarbon gas.
- the inert gas may include at least one of argon and nitrogen.
- the lithium compound recovered through the heating step may include at least one of lithium aluminate (LiAlO 2 ), lithium carbonate (LiCO 3 ), lithium fluoride (LiF), and lithium chloride (LiCl).
- LiAlO 2 lithium aluminate
- LiCO 3 lithium carbonate
- LiF lithium fluoride
- LiCl lithium chloride
- Li 2 O(s) + AlO 3 (s) 2LiAlO 2 (s)
- Li 2 O in the cathode material may generate LiAlO 2 by Al, which is a current collector, or Al cover material, and can be generated by combining the cathode material carbon with the cathode material oxygen or oxygen in the atmosphere.
- Li 2 CO 3 can be generated through, and Li 2 O can react with fluorine contained in the electrolyte to generate LiF.
- the content of impurities such as Na, K, Ca, and Mg can be reduced. Specifically, the impurity may be dissolved in a small amount in the crystalline lithium compound.
- the lithium compound includes impurities, and the impurities are, in weight percent, Na: 1.8 wt% or less (excluding 0 wt%), K: 0.06 wt% or less (excluding 0 wt%), Ca: 0.62 wt% or less (0 wt% or less), and Mg: 0.47 wt% or less (excluding 0 wt%).
- Sodium (Na) is a homologous element in the post-process of recovering valuable metals from the battery shredded material. In the process of forming lithium hydroxide, sodium partially reacts to form sodium hydroxide, thereby lowering the recovery of lithium or reducing the cost in the causticization process. There are side effects that increase .
- the lithium compound may contain 1.8% by weight or less of sodium. Specifically, the sodium may be included in an amount of 1.0 wt% or less, more specifically, 0.3 wt% or less.
- Na is the same group 1 element as Li during the crystallization of Li dissolved in the solvent after the leaching process and the solvent extraction process, and the actual yield in the process required to produce lithium carbonate is There is a problem of deterioration.
- the lithium compound may contain 0.62 wt% or less of calcium, specifically, 0.61 wt% or less of calcium, and more specifically, 0.3 wt% or less of calcium.
- the calcium contains more than the above range, there is a problem that the actual yield and process time increase during the solid-liquid separation process, which is an impurity purification process after the leaching process.
- the calcium content is excessively high, when nickel, cobalt, manganese hydroxide, and lithium hydroxide in the precursor state are synthesized to produce a positive electrode material, Li[NiCoMn] 1-x Ca x )]O 2 is synthesized.
- the potassium forms the oxide structure of the cathode material, which hinders the movement of lithium ions, thereby reducing the capacity of the battery.
- Magnesium (Mg) is an element that makes it difficult to separate solid and liquid phases during acid leaching in the valuable metal recovery process.
- the lithium compound may contain magnesium in an amount of 0.47% by weight or less, specifically, 0.46% by weight or less, and more specifically, 0.3% by weight or less.
- the amount of magnesium exceeds the above range, there is a problem of putting a load on the recovery process of nickel, cobalt, lithium, etc.
- the content of magnesium is excessively high, when producing a cathode material by synthesizing it with the precursor states of nickel, cobalt, manganese hydroxide, and lithium hydroxide, it is synthesized as Li[NiCoMn] 1-x Mg x )]O 2 , There is a problem that the capacity of the battery is reduced by forming an oxide structure in the cathode material, which hinders the movement of lithium ions.
- Potassium (K) is also a similar element to lithium and is an element that interferes with the formation of lithium into a hydroxide compound.
- the lithium compound may contain 0.06% by weight or less of potassium, specifically, 0.05% by weight, and more specifically 0.01% by weight or less.
- the battery pack used in the examples was shredded using the same shredder as in the examples without freezing. As shown in Figures 3a and 3b, during the crushing process, a flame occurred due to a short circuit.
- FIG 1 shows the change in battery voltage according to cooling temperature, according to an embodiment of the present invention.
- the battery pack shows almost the same voltage at a high temperature of about 40 °C, at room temperature, and up to -60 °C, so it can be confirmed that the battery characteristics are not lost. there is.
- the temperature decreases from -60°C to -70°C, the voltage drops rapidly, and the voltage becomes 0 below -70°C. In this way, it was confirmed that a short circuit did not occur when the battery was frozen at -60 to -150°C.
- Figure 2 is a graph showing the relationship between battery weight, external cooling temperature, and cooling time, according to an embodiment of the present invention.
- the battery processing method can derive the minimum cooling time for cooling the battery in the step of freezing the battery.
- the minimum cooling time is related to battery weight, external cooling temperature, and target temperature.
- the target temperature is set to -70 °C and the battery weights are 2.5 kg (A), 10 kg (B), 20 kg (C), and 50 kg (D), respectively.
- the external cooling temperature and minimum shows the cooling time.
- the electrolyte of the battery begins to cool after a predetermined period of time and the voltage becomes 0. Through this, it can be confirmed that when cooling the battery, a minimum maintenance time is required to sufficiently cool the interior, specifically the electrolyte.
- the weight of the battery and the time required for cooling are required.
- the minimum time required for cooling can be confirmed by using the external cooling temperature for freezing, the target temperature, and the weight of the battery.
- Table 1 below lists the minimum cooling time according to battery weight and external cooling temperature.
- FIGS. 3C and 3D an experiment was conducted on the fire occurrence of shredded material when the battery was frozen beyond the minimum freezing time required for cooling.
- the same battery weight, external cooling temperature, and minimum freezing time as in FIGS. 3A and 3B were set to 7 hours or more.
- Table 2 compares the fire occurrence states of Examples and Comparative Examples according to 3a to 3d, with the same battery weight, external cooling temperature, and minimum freezing time. The determination of the fire occurrence state was "O” if fire occurrence was observed after the battery was destroyed, and "X" otherwise.
- the discharge rate (V/min) is set to 5 V per minute or less per pack.
- pack-unit batteries have a voltage of about 500 V, but this varies depending on the state of charge, number of uses, and vehicle conditions. Therefore, the test was conducted on a battery cell basis, which is the smallest unit in the battery, and the battery cell has a maximum voltage of 4.2 V.
- Table 3 below shows the behavior of cell-level battery expansion according to discharge rate and temperature.
- Figure 4 is a photograph of an evaluation of the expansion amount according to the discharge rate of a battery cell according to an embodiment of the present invention. Looking at Table 3 and Figure 4 above, during forced discharge, a discharge of 0.04 V/min or more is performed on a cell basis. When this happens, the chemical structure within the battery rapidly collapses and the battery becomes very unstable, and it was confirmed that the amount of expansion increases due to phenomena such as vaporization of the anode material and electrolyte inside the battery.
- Table 4 compares the impurity components such as Na, K, Mg, and Ca in the battery shredded material produced by shredding the battery after saline discharge and the battery shredded material produced after forced discharge and freeze shredding.
- Table 5 shows the components and contents of the products and lithium compounds produced when the crushed material of the example containing the impurities in Table 4 was subjected to high temperature heat treatment at 1300°C.
- the LiAlO 2 composition may include at least one of 20.5 to 21.5 °, 29.0 to 29.5 °, 31.5 to 32.0 °, 32.2 to 33.0 °, 60.5 to 61.5 °, and 70.0 to 72.0 ° as XRD peaks.
- the Li 5 AlO 4 composition may include at least one of 19.5 to 20.2 ° and 21.6 to 22.2 ° as an XRD peak.
- the LiF composition may include at least one of 37.5 to 40.2 °, 43.9 to 46.5 °, and 64.5 to 66.5 ° as XRD peaks.
- the Li 2 CO 3 composition may include at least one of 24.0 to 26.0 °, 27.0 to 29.0 °, 34.0 to 36.0 °, and 37.0 to 39.0 ° as an XRD peak.
- Table 6 below compares the alloy and lithium compound components separated by the product and external force after high temperature heat treatment.
- the impurity content in the lithium compound subjected to high-temperature heat treatment after brine discharge is about 2 to 11 times higher than that of frozen crushing.
- the content of impurities is high, and a process for removing impurities may be added for lithium recovery during the wet process, which may lead to a process load. Therefore, by performing cryogenic freezing crushing and forced discharge followed by high-temperature heat treatment, the impurities of Na, K, Mg, and Ca can be controlled within 0.3%, 0.1%, 0.3%, and 0.5%, respectively.
- 6A to 6D are graphs showing the correlation between temperature and pressure for removing impurities according to an embodiment of the present invention.
- FIGS. 6A to 6D it is a graph showing the correlation between temperature and pressure for removing impurities Na, K, Ca, and Mg, respectively.
- impurities such as volatile substances such as Ca, Mg, Na, and K can be removed while suppressing the volatilization reaction of Li by controlling the temperature and vacuum level.
- the temperature may be adjusted within a temperature range of 300 to 1400° C. and the vacuum degree logP(atm) may be adjusted within the range of -4 to 0.
- Na, K, Ca, and Mg can be removed through the following reaction equation.
- reaction temperature 94.58 ⁇ logP(atm) + 801.28
- reaction temperature 68.425 ⁇ logP(atm) + 623.35
- reaction temperature 119.26 ⁇ logP(atm) + 1557.9
- reaction temperature 140.25 ⁇ logP(atm) + 1805.1
- Table 7 below shows the amount of change in Na, K, Ca, and Mg components after applying high-temperature heat treatment according to temperature and vacuum degree.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Geochemistry & Mineralogy (AREA)
- Secondary Cells (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
| 배터리 무게[Kg] | 외부 냉각 온도[℃] | 목표 온도 [℃] |
최소 냉각 시간[h] | |
| A_1 | 2.5 | -120 | -70 | 1.9 |
| A_2 | 2.5 | -100 | -70 | 2.9 |
| A_3 | 2.5 | -80 | -70 | 4.4 |
| B_1 | 10 | -120 | -70 | 3.1 |
| B_2 | 10 | -100 | -70 | 4.6 |
| B_3 | 10 | -80 | -70 | 7.0 |
| C_1 | 20 | -120 | -70 | 3.9 |
| C_2 | 20 | -100 | -70 | 5.8 |
| C_3 | 20 | -80 | -70 | 8.8 |
| D_1 | 50 | -120 | -70 | 5.3 |
| D_2 | 50 | -100 | -70 | 7.9 |
| D_3 | 50 | -80 | -70 | 11.9 |
| 배터리 무게[Kg] | 외부 냉각 온도[℃] | 목표 온도 [℃] |
식 4 | 실제 냉각 시간[h] | 화재 발생 | |
| 비교예 | 25 | - 95 | - 70 | 7.0 | 5 | O |
| 실시예 | 25 | - 95 | - 70 | 7.0 | 7 | X |
| 방전 속도 [V/min] |
0.01 | 0.02 | 0.03 | 0.04 | 0.05 | 0.1 | 0.2 | 0.5 |
| 상온 팽창량 [mm] |
0.5 이내 | 0.7 | 0.7 | 2 | 10 이상 | 테스트 불가 | ||
| 저온 (-20 ℃) 팽창량 |
0.5 이내 | 0.5 이내 | 0.5 이내 | 0.8 | 1.0 | 1.1 | 1.3 | 2.0 이상 |
| 구분 | Na [%] |
K [%] |
Mg [%] |
Ca [%] |
비고 |
| 염수 방전 | 0.830 | 0.027 | 0.049 | 0.034 | 비교예 |
| 강제 방전 & 냉동 파쇄 | 0.054 | 0.0065 | 0.0101 | 0.02 | 실시예 |
| 구분 [wt%] |
Li | Al | C | F | Na | K | Mg | Ca | gram |
| 생성물 | 1.91 | 4.68 | 4.78 | 1.69 | 0.05 | 0.01 | 0.01 | 0.02 | 50.0 |
| 리튬 화합물 | 13.50 | 32.44 | 2.72 | 3.56 | 0.09 | 0.01 | 0.07 | 0.14 | 6.0 |
| 구분 [wt%] |
Li | Al | C | F | Na | K | Mg | Ca | |
| 염수 방전 |
리튬 화합물 |
13.6 | 30.08 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 |
| 저온 냉동 파쇄 |
14.15 | 31.29 | 2.54 | 3.33 | 0.15 | 0.02 | 0.14 | 0.39 | |
| 구분 | 온도 [℃] |
진공도 logP [atm] |
Li [wt%] |
Li [moles] |
Al [wt%] |
Al [moles] |
C [wt%] |
F [wt%] |
Na [wt%] |
K [wt%] |
Mg [wt%] |
Ca [wt%] |
([Na]+ [K]+ [Mg]) /[Ca] |
<Al>/<Li> | 비고 |
| 실험예 | 1000 | -5 | 13.2 | 0.317 | 30.25 | 1.874 | 2.62 | 3.34 | 0.81 | 0.04 | 0.42 | 0.63 | 2.0 | 5.914 | 비교예 |
| 실험예 | -4 | 13.3 | 0.620 | 30.18 | 1.810 | 2.12 | 3.31 | 0.971 | 0.041 | 0.42 | 0.62 | 2.3 | 2.922 | 비교예 | |
| 실험예 | -3 | 13.1 | 0.735 | 30.11 | 1.766 | 2.34 | 3.21 | 1.213 | 0.046 | 0.44 | 0.63 | 2.7 | 2.404 | 비교예 | |
| 실험예 | -2 | 13.6 | 0.807 | 30.21 | 1.739 | 2.28 | 3.29 | 1.419 | 0.053 | 0.43 | 0.61 | 3.1 | 2.156 | 비교예 | |
| 실험예 | -1 | 13.4 | 0.922 | 30.14 | 1.705 | 2.31 | 3.17 | 1.61 | 0.057 | 0.45 | 0.62 | 3.4 | 1.849 | 비교예 | |
| 실험예 | 0 | 13.6 | 1.037 | 30.08 | 1.667 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 1.607 | 비교예 | |
| 실험예 | 1100 | -5 | 12.9 | 0.936 | 30.78 | 1.719 | 2.71 | 3.02 | 0.62 | 0.024 | 0.36 | 0.38 | 2.6 | 1.836 | 비교예 |
| 실험예 | -4 | 13.4 | 1.931 | 30.31 | 1.123 | 2.24 | 3.12 | 0.83 | 0.028 | 0.41 | 0.46 | 2.8 | 0.582 | 실시예 | |
| 실험예 | -3 | 13.6 | 1.959 | 30.32 | 1.124 | 2.41 | 3.38 | 0.88 | 0.029 | 0.42 | 0.58 | 2.3 | 0.574 | 실시예 | |
| 실험예 | -2 | 13.6 | 1.959 | 30.28 | 1.122 | 2.12 | 3.19 | 1.32 | 0.031 | 0.43 | 0.62 | 2.9 | 0.573 | 실시예 | |
| 실험예 | -1 | 13.5 | 1.945 | 30.13 | 1.117 | 2.24 | 3.22 | 1.48 | 0.045 | 0.43 | 0.61 | 3.2 | 0.574 | 실시예 | |
| 실험예 | 0 | 13.6 | 1.959 | 30.08 | 1.115 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 0.569 | 실시예 | |
| 실험예 | 1200 | -5 | 12.2 | 0.879 | 31.02 | 1.752 | 2.88 | 2.7 | 0.51 | 0.021 | 0.31 | 0.22 | 3.8 | 1.993 | 실시예 |
| 실험예 | -4 | 13.4 | 1.931 | 30.67 | 1.137 | 2.92 | 3.12 | 0.83 | 0.028 | 0.41 | 0.46 | 2.8 | 0.589 | 실시예 | |
| 실험예 | -3 | 13.6 | 1.959 | 30.22 | 1.120 | 2.71 | 3.08 | 0.88 | 0.029 | 0.42 | 0.58 | 2.3 | 0.572 | 실시예 | |
| 실험예 | -2 | 13.6 | 1.959 | 30.09 | 1.115 | 2.58 | 3.31 | 1.32 | 0.031 | 0.43 | 0.62 | 2.9 | 0.569 | 실시예 | |
| 실험예 | -1 | 13.5 | 1.945 | 30.19 | 1.119 | 2.31 | 3.12 | 1.48 | 0.045 | 0.43 | 0.61 | 3.2 | 0.575 | 실시예 | |
| 실험예 | 0 | 13.6 | 1.959 | 30.08 | 1.115 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 0.569 | 실시예 | |
| 실험예 | 1300 | -5 | 10.4 | 0.475 | 31.72 | 1.888 | 2.82 | 2.1 | 0.42 | 0.018 | 0.22 | 0.18 | 3.7 | 3.971 | 비교예 |
| 실험예 | -4 | 13.2 | 1.902 | 31.02 | 1.150 | 2.76 | 2.91 | 0.52 | 0.031 | 0.28 | 0.33 | 2.5 | 0.605 | 실시예 | |
| 실험예 | -3 | 13.4 | 1.931 | 30.77 | 1.140 | 2.44 | 3.17 | 0.78 | 0.042 | 0.33 | 0.51 | 2.3 | 0.591 | 실시예 | |
| 실험예 | -2 | 13.4 | 1.931 | 30.06 | 1.114 | 2.58 | 3.32 | 0.82 | 0.051 | 0.46 | 0.61 | 2.2 | 0.577 | 실시예 | |
| 실험예 | -1 | 13.5 | 1.945 | 30.13 | 1.117 | 2.41 | 3.11 | 1.18 | 0.058 | 0.44 | 0.6 | 2.8 | 0.574 | 실시예 | |
| 실험예 | 0 | 13.6 | 1.959 | 30.08 | 1.115 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 0.569 | 실시예 | |
| 실험예 | 1400 | -5 | 8.5 | 0.360 | 31.53 | 1.920 | 3.1 | 1.9 | 0.38 | 0.014 | 0.19 | 0.12 | 4.9 | 5.331 | 비교예 |
| 실험예 | -4 | 13.1 | 1.887 | 30.88 | 1.145 | 2.98 | 2.81 | 0.52 | 0.022 | 0.21 | 0.26 | 2.9 | 0.606 | 실시예 | |
| 실험예 | -3 | 13.3 | 1.916 | 30.72 | 1.139 | 3.12 | 3.19 | 0.64 | 0.029 | 0.31 | 0.42 | 2.3 | 0.594 | 실시예 | |
| 실험예 | -2 | 13.6 | 1.959 | 30.45 | 1.129 | 2.67 | 3.11 | 0.82 | 0.042 | 0.44 | 0.59 | 2.2 | 0.576 | 실시예 | |
| 실험예 | -1 | 13.6 | 1.959 | 30.09 | 1.115 | 2.61 | 3.28 | 1.29 | 0.055 | 0.47 | 0.61 | 3.0 | 0.569 | 실시예 | |
| 실험예 | 0 | 13.6 | 1.959 | 30.08 | 1.115 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 0.569 | 실시예 | |
| 실험예 | 1500 | -5 | 4.1 | 0.173 | 32.12 | 2.007 | 3.31 | 0.8 | 0.26 | 0.012 | 0.16 | 0.11 | 3.9 | 11.609 | 비교예 |
| 실험예 | -4 | 10.2 | 0.403 | 31.82 | 1.885 | 3.08 | 2.41 | 0.41 | 0.025 | 0.19 | 0.22 | 2.8 | 4.674 | 비교예 | |
| 실험예 | -3 | 12.6 | 0.591 | 31.02 | 1.809 | 2.91 | 2.91 | 0.55 | 0.028 | 0.29 | 0.39 | 2.2 | 3.063 | 비교예 | |
| 실험예 | -2 | 13.1 | 0.908 | 30.41 | 1.702 | 2.96 | 3.09 | 0.77 | 0.035 | 0.41 | 0.52 | 2.3 | 1.875 | 비교예 | |
| 실험예 | -1 | 13.4 | 1.066 | 30.22 | 1.652 | 2.51 | 3.31 | 1.12 | 0.047 | 0.47 | 0.57 | 2.9 | 1.549 | 비교예 | |
| 실험예 | 0 | 13.6 | 1.181 | 30.08 | 1.607 | 2.44 | 3.2 | 1.67 | 0.06 | 0.45 | 0.61 | 3.6 | 1.361 | 비교예 |
Claims (11)
- 폐배터리로부터 회수된 유가 금속 회수용 리튬 화합물로서,Li, Al, 및 불순물을 포함하고,상기 불순물은 중량%로서, Na: 1.8 wt% 이하(0 wt% 제외), K: 0.06 wt% 이하(0 wt% 제외), Ca: 0.62 wt% 이하(0 wt% 이하), 및 Mg: 0.47 wt% 이하(0 wt% 제외)를 포함하고,하기 식 1을 만족하는 리튬 화합물.<식 1><Al>/<Li> ≤ 1.30(<Al> 및 <Li>는 각각 Al 및 Li의 Moles를 의미한다)
- 제1 항에 있어서,하기 식 2를 만족하는 리튬 화합물.<식 2>([Na] + [K] + [Mg])/[Ca] ≤ 3.6([Na], [K], [Mg], 및 [Ca]는 각각 Na, K, Mg, 및 Ca의 중량%를 의미한다)
- 제1 항에 있어서,하기 식 3을 만족하는 리튬 화합물.<식 3><Al> = 0.3702 × <Li> + 0.0832 ± 0.5(<Al> 및 <Li>은 각각 Al 및 Li의 몰수(Moles)를 의미한다)
- 배터리를 준비하는 단계;상기 배터리를 냉동 및 강제 방전하는 단계;상기 배터리를 파쇄하는 단계; 및파쇄된 배터리 파쇄물을 가열하는 단계를 포함하고,상기 가열하는 단계는 1,100 내지 1,400 ℃의 온도 범위에서 수행되고,상기 가열하는 단계에서 진공도(LogP[atm])는 - 4 내지 0 인 범위에서 수행되며,상기 가열하는 단계를 통해 회수된 리튬 화합물은 불순물을 포함하며, 상기 불순물은 중량%로서, Na: 1.8 wt% 이하(0 wt% 제외), K: 0.06 wt% 이하(0 wt% 제외), Ca: 0.62 wt% 이하(0 wt% 이하), 및 Mg: 0.47 wt% 이하(0 wt% 제외)를 포함하는 유가 금속 회수용 리튬 화합물의 회수 방법.
- 제4 항에 있어서,상기 가열하는 단계를 통해 회수된 리튬 화합물에서, 리튬은 중량%로서, 13.0 wt% 이상을 포함하는 유가 금속 회수용 리튬 화합물의 회수 방법.
- 제4 항에 있어서,하기 식 2를 만족하는 유가 금속 회수용 리튬 화합물의 회수 방법.<식 2>([Na] + [K] + [Mg])/[Ca] ≤ 3.6([Na], [K], [Mg], 및 [Ca]는 각각 Na, K, Mg, 및 Ca의 중량%를 의미한다)
- 제4 항에 있어서,상기 파쇄된 배터리 파쇄물을 가열하는 단계는 불활성 가스, 이산화탄소, 일산화탄소, 및 탄화수소가스 중 적어도 하나의 가스 분위기에서 수행되는 유가 금속 회수용 리튬 화합물의 회수 방법.
- 제4 항에 있어서,상기 배터리를 냉동 및 강제 방전하는 단계는 - 150 내지 - 60 ℃로 냉각하여 실시하는 유가 금속 회수용 리튬 화합물의 회수 방법.
- 제4 항에 있어서,상기 배터리를 냉동 및 강제 방전하는 단계는 1000 torr 이하의 진공 분위기 조건 하에서, - 60 내지 - 20 ℃로 냉각하여 실시하는 유가 금속 회수용 리튬 화합물의 회수 방법.
- 제4 항에 있어서,상기 배터리를 냉동 및 강제 방전하는 단계는 하기 식 1을 만족하는 유가 금속 회수용 리튬 화합물의 회수 방법.<식 4>최소 냉각 시간(Hr)=A × (W0.33)(A = 4 × e(-0.02×dT), W = 배터리 무게(Kg), dT= │외부 냉각 온도 - 목표 온도│, ││는 절대값을 의미한다)
- 제4 항에 있어서,상기 배터리를 냉동 및 강제 방전하는 단계는 0.04 V/min 미만의 방전 속도에서 강제 방전되는 유가 금속 회수용 리튬 화합물의 회수 방법.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380062259.6A CN119816471A (zh) | 2022-10-12 | 2023-10-11 | 有价金属回收用锂化合物及其制造方法 |
| JP2025512146A JP2025529108A (ja) | 2022-10-12 | 2023-10-11 | 有価金属回収用リチウム化合物およびその製造方法 |
| EP23877677.7A EP4603458A1 (en) | 2022-10-12 | 2023-10-11 | Lithium compound for valuable metal recovery and method for preparing same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220130772A KR20240050863A (ko) | 2022-10-12 | 2022-10-12 | 유가 금속 회수용 리튬 화합물 및 이의 제조 방법 |
| KR10-2022-0130772 | 2022-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024080754A1 true WO2024080754A1 (ko) | 2024-04-18 |
Family
ID=90669945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/015650 Ceased WO2024080754A1 (ko) | 2022-10-12 | 2023-10-11 | 유가 금속 회수용 리튬 화합물 및 이의 제조 방법 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4603458A1 (ko) |
| JP (1) | JP2025529108A (ko) |
| KR (1) | KR20240050863A (ko) |
| CN (1) | CN119816471A (ko) |
| WO (1) | WO2024080754A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523516A (en) * | 1995-04-07 | 1996-06-04 | National Technical Systems, Inc | Method for recycling lithium batteries |
| KR101883100B1 (ko) * | 2017-04-04 | 2018-07-27 | 연세대학교 산학협력단 | 폐전지로부터 유가금속을 회수하는 방법 및 유가금속 회수 시스템 |
| CN114606386A (zh) * | 2022-03-31 | 2022-06-10 | 东北大学 | 一种废弃锂电池磨浸回收钴和锂的工艺 |
| KR20220135176A (ko) * | 2021-03-29 | 2022-10-06 | 주식회사 포스코 | 폐전지 재사용을 위한 처리 방법 |
| KR102452645B1 (ko) * | 2022-03-28 | 2022-10-07 | 권기창 | 건식 공정을 이용한 리튬 이온 배터리의 재활용 방법 |
-
2022
- 2022-10-12 KR KR1020220130772A patent/KR20240050863A/ko active Pending
-
2023
- 2023-10-11 WO PCT/KR2023/015650 patent/WO2024080754A1/ko not_active Ceased
- 2023-10-11 JP JP2025512146A patent/JP2025529108A/ja active Pending
- 2023-10-11 EP EP23877677.7A patent/EP4603458A1/en active Pending
- 2023-10-11 CN CN202380062259.6A patent/CN119816471A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523516A (en) * | 1995-04-07 | 1996-06-04 | National Technical Systems, Inc | Method for recycling lithium batteries |
| KR101883100B1 (ko) * | 2017-04-04 | 2018-07-27 | 연세대학교 산학협력단 | 폐전지로부터 유가금속을 회수하는 방법 및 유가금속 회수 시스템 |
| KR20220135176A (ko) * | 2021-03-29 | 2022-10-06 | 주식회사 포스코 | 폐전지 재사용을 위한 처리 방법 |
| KR102452645B1 (ko) * | 2022-03-28 | 2022-10-07 | 권기창 | 건식 공정을 이용한 리튬 이온 배터리의 재활용 방법 |
| CN114606386A (zh) * | 2022-03-31 | 2022-06-10 | 东北大学 | 一种废弃锂电池磨浸回收钴和锂的工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240050863A (ko) | 2024-04-19 |
| JP2025529108A (ja) | 2025-09-04 |
| EP4603458A1 (en) | 2025-08-20 |
| CN119816471A (zh) | 2025-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023121058A1 (ko) | 유가 금속 회수 합금, 유가 금속 회수 조성물, 및 유가 금속 회수 방법 | |
| WO2023017910A1 (en) | Recycling method of positive electrode material for secondary batteries and device using the same | |
| WO2022080657A1 (ko) | 양극 스크랩을 이용한 활물질 재사용 방법 | |
| WO2023027436A1 (ko) | 양극 활물질 재사용 방법 | |
| WO2024080754A1 (ko) | 유가 금속 회수용 리튬 화합물 및 이의 제조 방법 | |
| WO2024080753A1 (ko) | 리튬 함유 화합물을 포함하는 조성물 및 배터리 처리 방법 | |
| WO2024072147A1 (ko) | 단위 배터리 파쇄물, 이를 포함하는 배터리 파쇄물 및 배터리 처리 방법 | |
| WO2025135672A1 (ko) | 리튬을 함유하는 황산 수용액 및 이의 제조 방법 | |
| WO2024136237A1 (ko) | 폐배터리 처리 방법 | |
| WO2025135682A1 (ko) | 단위 배터리 파쇄물, 이를 포함하는 배터리 파쇄물, 및 배터리 처리 방법 | |
| WO2024262972A1 (ko) | 유가 금속 회수 조성물 및 유가 금속 회수 방법 | |
| WO2022211446A1 (ko) | 폐전지 재사용을 위한 처리 방법 | |
| WO2024123058A1 (ko) | 유가 금속 반응물, 유가 금속 파쇄물, 및 유가 금속 회수 방법 | |
| WO2025105909A1 (ko) | 유가 금속 반응물, 유가 금속 파쇄물, 및 유가 금속 회수 방법 | |
| WO2025135424A1 (ko) | 리튬 화합물 회수용 조성물 및 배터리 처리 방법 | |
| WO2025135678A1 (ko) | 유가 금속 회수 합금 및 유가 금속 회수 방법 | |
| WO2025127777A1 (ko) | 유가 금속의 재활용 방법, 이를 이용하여 회수된 유가 금속 회수 합금 입자 및 황산염 용액 | |
| WO2025135677A1 (ko) | 배터리 파쇄물 및 배터리 처리 방법 | |
| WO2025127687A1 (ko) | 유가 금속 회수 조성물 및 유가 금속 회수 방법 | |
| WO2025135713A1 (ko) | 배터리 안정화 장치 및 배터리 안정화 시스템 | |
| WO2025135676A1 (ko) | 배터리 처리 방법 | |
| KR20240177222A (ko) | 리튬 함유 화합물을 포함하는 조성물 | |
| WO2024262876A1 (ko) | 원통형 배터리의 재활용 방법 | |
| WO2025170334A1 (ko) | 사용후 인산철 배터리로부터 인산철 배터리 소재의 회수방법 및 인산철 배터리 불능화 방법 | |
| WO2025135683A1 (ko) | 배터리 파쇄물 및 배터리 처리 방법 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23877677 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025512146 Country of ref document: JP Ref document number: 202380062259.6 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517024076 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380062259.6 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202517024076 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023877677 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023877677 Country of ref document: EP Effective date: 20250512 |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023877677 Country of ref document: EP |