WO2022224711A1 - 有価金属の製造方法 - Google Patents
有価金属の製造方法 Download PDFInfo
- Publication number
- WO2022224711A1 WO2022224711A1 PCT/JP2022/014648 JP2022014648W WO2022224711A1 WO 2022224711 A1 WO2022224711 A1 WO 2022224711A1 JP 2022014648 W JP2022014648 W JP 2022014648W WO 2022224711 A1 WO2022224711 A1 WO 2022224711A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cobalt
- slag
- alloy
- recovery rate
- melting
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 100
- 239000002184 metal Substances 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 87
- 239000010941 cobalt Substances 0.000 claims abstract description 87
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000002893 slag Substances 0.000 claims abstract description 78
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 56
- 239000000956 alloy Substances 0.000 claims abstract description 56
- 238000011084 recovery Methods 0.000 claims abstract description 56
- 239000011574 phosphorus Substances 0.000 claims abstract description 52
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 52
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 51
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 49
- 239000002699 waste material Substances 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims abstract description 41
- 230000008018 melting Effects 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000000155 melt Substances 0.000 claims abstract description 15
- 150000002739 metals Chemical class 0.000 claims description 40
- 239000002994 raw material Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 35
- 239000007858 starting material Substances 0.000 abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 19
- 239000010949 copper Substances 0.000 description 17
- 238000010309 melting process Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052799 carbon Inorganic materials 0.000 description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 15
- 239000003638 chemical reducing agent Substances 0.000 description 15
- 229910052802 copper Inorganic materials 0.000 description 14
- 229910052759 nickel Inorganic materials 0.000 description 13
- 239000012535 impurity Substances 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 238000010298 pulverizing process Methods 0.000 description 10
- 239000000292 calcium oxide Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000007800 oxidant agent Substances 0.000 description 9
- 230000009467 reduction Effects 0.000 description 9
- 230000004907 flux Effects 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 239000010926 waste battery Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000009853 pyrometallurgy Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical class [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical class [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003832 thermite Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- C22B7/001—Dry processes
- C22B7/004—Dry processes separating two or more metals by melting out (liquation), i.e. heating above the temperature of the lower melting metal component(s); by fractional crystallisation (controlled freezing)
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/043—Sulfurated acids or salts thereof
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- 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
- C22B7/001—Dry 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
- H01M10/54—Reclaiming serviceable parts of waste 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W30/20—Waste processing or separation
-
- 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
- the present invention relates to a method for producing valuable metals from raw materials including waste lithium ion batteries.
- lithium-ion batteries have become popular as lightweight, high-output secondary batteries.
- lithium-ion batteries One of the main uses of lithium-ion batteries is hybrid and electric vehicles, and it is expected that a large amount of lithium-ion batteries will be disposed of in the future along with the life cycle of the vehicle.
- Many proposals have been made to reuse such used batteries and defective products produced during manufacture (hereinafter referred to as "waste lithium ion batteries") as resources.
- waste lithium ion batteries a pyrometallurgical refining process has been proposed in which waste lithium ion batteries are completely melted in a high-temperature furnace.
- waste lithium-ion batteries in addition to valuable metals such as nickel (Ni), cobalt (Co), and copper (Cu), carbon (C), aluminum (Al), fluorine (F), phosphorus (P), etc. Contains impurities. Therefore, in recovering valuable metals from waste lithium ion batteries, it is necessary to remove these impurity components.
- Patent Document 1 proposes a process of putting waste lithium-ion batteries into a melting furnace and oxidizing them with oxygen as a dry method for recovering cobalt from waste lithium-ion batteries.
- cobalt can be recovered at a high recovery rate, there is no description of removal of phosphorus, and there is no disclosure of stable recovery of valuable metals and removal of phosphorus.
- Patent Document 2 when melting waste lithium ion batteries, SiO 2 and CaO are added to lower the melting point of slag to promote separation of metal and slag, and then metal after slag is separated.
- a process has been proposed in which a dephosphorization step is performed in which phosphorus is removed by adding CaO while blowing oxygen into the steel. Phosphorus can be removed by such a process, but in order to further reduce the production cost, an efficient process that does not require the dephosphorization step is desired.
- the present invention has been proposed in view of such circumstances, and in a method for producing valuable metals from raw materials including waste lithium ion batteries, it is possible to effectively obtain metals with a reduced phosphorus content.
- the purpose is to provide a method.
- the inventors have made extensive studies to solve the above-mentioned problems. As a result, in the process of melting raw materials including waste lithium-ion batteries to obtain a melt, the recovery rate of cobalt from the raw materials was calculated, and it was confirmed that the cobalt recovery rate was within a specific range. ), a high-quality alloy with a phosphorus content of 0.1% by mass or less can be obtained, which led to the completion of the present invention.
- a first aspect of the present invention is a method for producing a valuable metal from a raw material including a waste lithium ion battery containing phosphorus, comprising: a melting step of melting the raw material to obtain a melt; and a slag separation step of separating slag from the material and recovering an alloy containing valuable metals, and confirming that the cobalt recovery rate from the raw material is 95.0% or more and 99.6% or less.
- the second aspect of the present invention is a method for producing valuable metals according to the first aspect, wherein the cobalt recovery rate is confirmed from the analysis result of the quality of cobalt in the slag produced in the melting step.
- a third aspect of the present invention is a valuable A metal manufacturing method.
- a fourth aspect of the present invention is the method for producing a valuable metal according to any one of the first to third aspects, wherein the raw material is melted at a heating temperature of 1300° C. or higher and 1500° C. or lower in the melting step. is.
- FIG. 4 is a graph showing the relationship between the recovery rate of cobalt and the grade of phosphorus in metal. It is process drawing which shows an example of the flow of the manufacturing method of a valuable metal. It is a graph showing the relationship between the quality of cobalt in slag and the recovery rate of cobalt.
- this embodiment An embodiment of the present invention (hereinafter referred to as “this embodiment") will be described below.
- the present invention is not limited to the following embodiments, and various modifications are possible without changing the gist of the present invention.
- the method for producing valuable metals according to the present embodiment is a method for separating and recovering valuable metals from raw materials including waste lithium ion batteries containing phosphorus. Therefore, it can also be called a recovery method for valuable metals.
- the method according to the present embodiment is mainly a method by a pyrometallurgical process, but may be composed of a pyrometallurgical process and a hydrometallurgical process.
- Waste lithium-ion batteries include not only used lithium-ion batteries, but also defective products generated in the manufacturing process of positive electrode materials, etc. that make up the battery, residues in the manufacturing process, generated scraps, and other lithium-ion battery manufacturing processes. It is a concept that includes waste materials within. Therefore, waste lithium ion batteries can also be called lithium ion battery waste materials.
- Valuable metals include nickel (Ni), cobalt (Co), copper (Cu), and combinations thereof. Nickel (Ni), cobalt (Co), copper (Cu), and At least one metal or alloy selected from the group consisting of combinations.
- the content of each valuable metal contained in the waste lithium ion battery is not particularly limited. For example, it may contain 10% by mass or more of copper.
- the method for producing valuable metals includes a melting step of melting raw materials including waste lithium ion batteries containing phosphorus to obtain a melt, separating slag from the melt, and producing valuable metals and a slag separation step of recovering an alloy containing
- the phosphorus content of the alloy is set to 0.1% by mass or less by recovering the alloy after confirming that the cobalt recovery rate from the raw material is within a specific range.
- the "cobalt recovery rate” refers to the percentage of the amount of cobalt in the recovered metal (alloy) with respect to the amount of cobalt in the raw materials including waste lithium-ion batteries.
- FIG. 1 is a graph showing the relationship between the cobalt recovery rate and the phosphorus grade in the metal. As shown in the graph of FIG. 1, when the cobalt recovery rate exceeds 99.6%, it can be seen that the phosphorus grade in the recovered metal rises sharply.
- the recovery rate of cobalt which is a valuable metal, is preferably 95.0% or more.
- the alloy is recovered after confirming that the cobalt recovery rate from the raw material is within the range of 95.0% or more and 99.6% or less.
- the phosphorus content in the alloy (metal) is set to 0.1% by mass or less.
- phosphorus can be removed effectively and efficiently while recovering cobalt at a high recovery rate without providing a step of performing a separate dephosphorization treatment after recovering the alloy.
- An alloy with reduced phosphorus content can be recovered.
- FIG. 2 is a process chart showing an example of the flow of the method for producing valuable metals according to the present embodiment.
- the method for producing valuable metals includes a waste battery pretreatment step S1 for removing the electrolytic solution and the outer can from the waste lithium ion battery, and a pulverization step S2 for pulverizing the contents of the battery into a pulverized product. and a preheating step (also referred to as "oxidizing roasting step”) S3 for preheating the pulverized material as necessary, and a melting process (also referred to as "reduction melting step”) S4 for melting the pulverized material to obtain a melt. and a slag separation step S5 for separating slag from the melt and recovering an alloy containing valuable metals.
- a waste battery pretreatment step S1 for removing the electrolytic solution and the outer can from the waste lithium ion battery
- a pulverization step S2 for pulverizing the contents of the battery into a pulverized product.
- the waste battery pretreatment step S1 is performed for the purpose of preventing the waste lithium ion battery from exploding or rendering it harmless, removing the outer can, etc., when recovering valuable metals from the waste lithium ion battery.
- waste lithium-ion batteries such as used lithium-ion batteries are closed systems and contain electrolytic solution, etc., so if pulverization is performed in that state, there is a risk of explosion and is dangerous. be. Therefore, it is necessary to perform discharge treatment and electrolyte removal treatment in some way.
- discharge treatment and electrolyte removal treatment By removing the electrolytic solution and the outer can in the waste battery pretreatment step S1 in this way, safety can be improved, and the recovery productivity of valuable metals such as copper, nickel, and cobalt can be improved.
- the specific pretreatment method is not particularly limited, but for example, by physically opening the battery with a needle-like cutting edge, the internal electrolyte can be drained and removed. Alternatively, the waste lithium ion battery may be heated as it is and the electrolyte may be burned to render it harmless.
- the exterior cans that make up the battery are often made of metals such as aluminum and iron. It is possible to For example, when recovering aluminum or iron contained in the outer can, the removed outer can can be pulverized and then sieved using a sieve shaker. In the case of aluminum, even light pulverization easily turns into powder and can be efficiently recovered. It is also possible to recover the iron contained in the outer can by magnetic sorting.
- the battery content obtained through the waste battery pretreatment step S1 is pulverized to obtain a pulverized product.
- the treatment in the pulverization step S2 is performed for the purpose of increasing the reaction efficiency in the pyrometallurgical process in the subsequent steps, and by increasing the reaction efficiency, the recovery rate of valuable metals such as copper, nickel, and cobalt can be increased. can be done.
- the method of pulverization is not particularly limited, but the contents of the battery can be pulverized using a conventionally known pulverizer such as a cutter mixer.
- a preheating step S3 can be provided as necessary for the pulverized waste lithium ion battery that has undergone the pulverizing step S2, and heat treatment (oxidizing roasting treatment) can be performed. By performing the heat treatment in the preheating step S3, impurities contained in the contents of the battery can be volatilized or thermally decomposed and removed.
- the preheating step S3 for example, it is preferable to perform heating at a temperature of 700°C or higher (preheating temperature).
- preheating temperature By setting the preheating temperature to 700° C. or higher, the efficiency of removing impurities contained in the battery can be increased.
- the upper limit of the preheating temperature is preferably 900° C. or less, which can reduce heat energy costs and improve processing efficiency.
- the heat treatment is preferably performed in the presence of an oxidizing agent.
- an oxidizing agent This makes it possible to oxidize and remove carbon among the impurities contained in the contents of the battery, and to oxidize aluminum.
- the molten fine particles of the valuable metal that are locally generated in the subsequent melting step S4 can be aggregated without being physically hindered by carbon, so the alloy obtained as a melt can be integrated to facilitate recovery.
- the main elements constituting the waste lithium-ion battery are easily oxidized in the order of aluminum>lithium>carbon>manganese>phosphorus>iron>cobalt>nickel>copper due to the difference in affinity with oxygen.
- the oxidizing agent is not particularly limited, it is preferable to use an oxygen-containing gas such as air, pure oxygen, oxygen-enriched gas, etc. from the viewpoint of ease of handling. Also, the amount of the oxidizing agent to be introduced can be, for example, about 1.2 times the chemical equivalent required for oxidizing each substance to be oxidized.
- the pulverized waste lithium-ion battery is melted together with the flux to obtain a melted material composed of an alloy containing valuable metals and slag.
- impurity elements such as aluminum are included in the slag as oxides, and phosphorus is also taken into the flux and included in the slag.
- valuable metals such as copper, which are difficult to form oxides, can be melted and recovered from the melt as an integral alloy.
- An alloy in a molten state obtained from a melt is also referred to as a "fused alloy".
- the flux preferably contains an element that takes in impurity elements and forms a basic oxide with a low melting point.
- an element that takes in impurity elements and forms a basic oxide with a low melting point.
- Phosphorus which is an impurity element, becomes an acidic oxide when oxidized. Therefore, the more basic the slag formed by the melting treatment, the easier it is to be incorporated into the slag.
- calcium oxide or calcium carbonate can be added.
- the melting step S4 may be performed in the presence of an oxidizing agent or a reducing agent in order to appropriately adjust the degree of oxidation-reduction when melting the waste lithium ion batteries.
- a known oxidant can be used.
- a solid oxidant may be added, or a gaseous oxidant may be introduced into the furnace.
- a known reducing agent can be used, but a reducing agent containing carbon atoms is preferable.
- a specific example of a reducing agent containing carbon atoms is graphite, which can reduce 2 mols of valuable metal oxides such as copper oxides and nickel oxides with 1 mol of carbon.
- hydrocarbons capable of reducing 2 mol to 4 mol of valuable metal oxide per 1 mol, carbon monoxide capable of reducing 1 mol of valuable metal oxide per mol, etc. are used as carbon supply sources. It can also be added. Therefore, by performing the reduction melting treatment in the presence of carbon as a reducing agent, the valuable metal can be efficiently reduced, and an alloy containing the valuable metal can be obtained more effectively.
- the reduction treatment using carbon has the advantage of being extremely safe compared to the case of using the thermite reaction in which metal powder such as aluminum is used as a reducing agent.
- the heating temperature When heating in the melting process, it is necessary to maintain the heating temperature for, for example, 30 minutes or more because the fluidity of the molten material is low when the heating temperature is reached and there is unmelted residue. Finally, it is preferable to observe the inside of the crucible and check whether it is completely melted with an iron measuring rod. After melting, the molten alloy (melting alloy) with increased fluidity and the slag are separated in the crucible according to their specific gravities such that the lower layer is the metal and the upper layer is the slag. Also at this time, the supernatant slag is sampled using an iron measuring rod, and then cooled and pulverized.
- the method for producing a valuable metal by recovering the alloy (metal) after confirming that the cobalt recovery rate from the raw material is 95.0% or more and 99.6% or less,
- the alloy is characterized by having a phosphorus content of 0.1% by mass or less.
- the method for calculating the cobalt recovery rate is not particularly limited, it can be calculated, for example, based on the quality of cobalt in the slag produced by the melting process in the melting step S4. Specifically, slag produced by the melting process is used, and the quality of cobalt in the slag is quickly analyzed (for example, within 8 minutes) by an analysis device such as a fluorescent X-ray analyzer.
- FIG. 3 is a graph showing the relationship between the cobalt grade in slag and the cobalt recovery rate. As shown in the graph of FIG. 3, there is a proportional relationship between the quality of cobalt in slag and the recovery rate of cobalt.
- the amount of flux, such as calcium, to be added to the composition of the waste lithium ion battery as a raw material is determined as an appropriate amount for melting.
- the slope and intercept of the proportional relationship are also determined. Therefore, based on such a proportional relationship, the cobalt recovery rate can be effectively calculated from the analysis result of the cobalt quality in the slag.
- the amount of cobalt in the metal is obtained from the amount of cobalt in the slag obtained from the amount of cobalt in the waste lithium-ion battery that is the raw material that is input, the quality of cobalt in the slag generated by the melting process, and the amount of slag generated, From this, the cobalt recovery rate can be calculated.
- the amount of slag is calculated by subtracting nickel, cobalt, and copper from the amount of waste lithium-ion batteries that were put in, assuming that these are all distributed to metal, the remaining elements become oxides, and the added flux is added to the amount of slag as calcium oxide. It is obtained as an assumption of what is added.
- the cobalt recovery rate is confirmed from the analysis results of the generated slag. Specifically, as shown in the graph of FIG. 1, it is confirmed whether the cobalt recovery rate is in the range of 95.0% or more and 99.6% or less. Then, when it is confirmed that the cobalt recovery rate is in the range of 95.0% or more and 99.6% or less, the melting process is terminated, and the alloy is recovered in the next slag separation step S5, so that the phosphorus content of the recovered alloy The amount can be 0.1% by weight or less.
- the cobalt recovery rate is more preferably in the range of 95.0% or more and 98.0% or less. After confirming that the cobalt recovery rate of the alloy is within such a range, the melting process is terminated, and the alloy is recovered, thereby recovering a higher quality alloy having a phosphorus content of 0.01% by mass or less. can be done.
- the cobalt recovery rate calculated from the analysis results of the cobalt grade in the slag is outside the range of 95.0% or more and 99.6% or less, or 95. Even within the range of 0% or more and 99.6% or less, if there is a deviation from the predetermined target value, if the grade of cobalt in the slag is low, an oxidizing agent can be added as necessary to reduce the cobalt content in the metal. Phosphorus in the metal can be distributed to the slag, although some of the cobalt will be distributed to the slag.
- the oxidizing agent used at this time it is preferable to use a gas containing oxygen such as air, pure oxygen, oxygen-enriched gas, or the like.
- the addition amount (input amount) is 2P+5/2O 2 ⁇ P 2 O 5 (holding time of 20 minutes or more and 30 minutes or less) with respect to phosphorus in the metal, because of the oxidation reaction of cobalt in the metal.
- the amount is preferably such that the reaction efficiency is 50% or more and 90% or less.
- the reducing agent it is preferable to use a reducing agent containing carbon atoms, as described above.
- the amount of addition (input amount) is preferably an amount such that the reaction efficiency of 2CoO+C ⁇ 2Co+CO 2 is 30% or more and 70% or less because phosphorus in the slag is also reduced.
- the heating temperature (melting temperature) in the melting treatment is not particularly limited, but is preferably 1300°C or higher, more preferably 1350°C or higher.
- the melting treatment is performed at a temperature of 1300° C. or higher, valuable metals such as copper, cobalt, and nickel are efficiently melted, and a molten metal is formed in a state of sufficiently enhanced fluidity. Therefore, it is possible to improve the separation efficiency between the valuable metal and the impurity component in the slag separation step S5, which will be described later. If the heating temperature is less than 1300° C., the separation efficiency between valuable metals and impurities may be insufficient.
- the upper limit of the heating temperature in the melting process is preferably 1500°C or less. If the heating temperature exceeds 1500° C., thermal energy is wasted and refractories such as crucibles and furnace walls are consumed rapidly, possibly reducing productivity.
- the cobalt recovery rate is calculated from the cobalt grade in the slag, and the cobalt recovery rate is 95.0% or more and 99.6% or less.
- the melting process is finished, and then the alloy (metal) is recovered by separating from the slag in the slag separation step S5.
- an alloy with an effectively reduced phosphorus content specifically, an alloy with a phosphorus content of 0.1% by mass or less can be recovered.
- the treatment in the smelting process when producing each valuable metal from an alloy containing valuable metals can be performed by a known method such as neutralization treatment or solvent extraction treatment, and is not particularly limited.
- a known method such as neutralization treatment or solvent extraction treatment
- the valuable metal is leached with an acid such as sulfuric acid (leaching step)
- an acid such as sulfuric acid
- copper is extracted by solvent extraction (extraction step)
- the remaining nickel The solution of cobalt and cobalt can be used by paying out to the positive electrode active material manufacturing process in the battery manufacturing process.
- an alloy containing valuable metals from which phosphorus has been effectively removed can be obtained.
- the heating temperature was set to 1350 ° C., 1400 ° C., and 1450 ° C. for each 500 g of the pulverized material after heat treatment obtained through the preheating step, and the following A test of melting treatment under the conditions was conducted.
- the slag amount was defined as the oxidized amount of the total amount, and 5% of the same amount of manganese contained in the slag, that is, 20 g of silicon dioxide was added to the slag amount.
- 10 g of graphite powder was added as a reducing agent, mixed, and charged into an alumina crucible.
- each material was heated to a heating temperature in a resistance heating furnace, and after confirming that it was in a molten state with a measuring rod, it was held in a molten state for 40 minutes. After that, the slag was sampled every 10 minutes and the quality of cobalt in the slag was analyzed using a fluorescent X-ray analyzer.
- the sampling method was to collect slag by inserting an iron measuring rod, pulverize the collected slag with a small vibration mill and analyze it with a fluorescent X-ray spectrometer to measure the quality of cobalt in the slag.
- the cobalt recovery rate distributed to the metal was calculated based on the cobalt quality, and it was confirmed that the cobalt recovery rate was 95.0% or more. After confirmation, the melting process was completed. After that, the crucible was taken out and the metal was poured out, cooled, and collected (slag separation step).
- Example 1 based on the sampling results, when the cobalt recovery rate was less than 95.0%, a reducing agent was added to adjust the degree of reduction, and the melting treatment was continued.
- the amount of the reducing agent charged was 0.30 g (after the first sampling in Example 1), 0.24 g (after the second sampling in Example 1), and 0.41 g (after the first sampling in Example 2). , 0.52 g (after the first sampling of Example 3).
- Comparative Example 1 the melting temperature was 1400°C, the holding time was 25 minutes, and slag sampling was not performed. In Comparative Example 2, the holding time was set to 80 minutes, and slag sampling was not performed.
- the slag after recovering the alloy was subjected to elemental analysis using an ICP analyzer (Agilent5100SUDV, manufactured by Agilent Technologies), and the amounts of cobalt and phosphorus were determined as a ratio (% by mass) to the total mass of the slag. .
- the alloy after separating the slag was also subjected to elemental analysis using an ICP analyzer (Agilent5100SUDV, manufactured by Agilent Technologies) to measure the amounts of cobalt and phosphorus, and the cobalt recovery rate from the battery contents. and the phosphorus grade in the alloy was obtained.
- ICP analyzer Align5100SUDV, manufactured by Agilent Technologies
- Table 2 shows the measurement results of the cobalt recovery rate from the battery contents and the phosphorus content in the alloy with respect to the total mass of slag.
- the alloys obtained in Examples 1 to 3 have a recovery rate of cobalt, which is a valuable metal contained in the battery, of 95% or more, and the phosphorus grade in the obtained alloy is 0. A favorable result of 0.02% by mass or less was obtained. In this way, in the course of the melting process, the cobalt recovery rate is calculated, the melting process is performed while adjusting the degree of reduction based on the result, and the alloy is recovered after confirming that the cobalt recovery rate is 95% or more. It was found that by doing so, a metal with a reduced phosphorus grade can be obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Secondary Cells (AREA)
Abstract
Description
本実施の形態に係る有価金属の製造方法は、リンを含有する廃リチウムイオン電池を含む原料から有価金属を分離回収する方法である。したがって、有価金属の回収方法とも言い換えることができる。本実施の形態係る方法は、主として乾式製錬プロセスによる方法であるが、乾式製錬プロセスと湿式製錬プロセスとから構成されていてもよい。
図2は、本実施の形態に係る有価金属の製造方法の流れの一例を示す工程図である。図2に示すように、有価金属の製造方法は、廃リチウムイオン電池の電解液及び外装缶を除去する廃電池前処理工程S1と、電池の内容物を粉砕して粉砕物とする粉砕工程S2と、粉砕物を必要に応じて予備加熱する予備加熱工程(「酸化焙焼工程」ともよぶ)S3と、粉砕物を熔融して熔融物を得る熔融工程(「還元熔融工程」ともよぶ)S4と、熔融物からスラグを分離して有価金属を含む合金を回収するスラグ分離工程S5と、を有する。
廃電池前処理工程S1は、廃リチウムイオン電池から有価金属を回収するにあたり、廃リチウムイオン電池の爆発防止又は無害化、外装缶除去等を目的として行われる。
粉砕工程S2では、廃電池前処理工程S1を経て得られた電池内容物を粉砕して粉砕物を得る。粉砕工程S2における処理は、次工程以降の乾式製錬プロセスでの反応効率を高めることを目的として行われ、反応効率を高めることで、銅、ニッケル、コバルト等の有価金属の回収率を高めることができる。
粉砕工程S2を経た廃リチウムイオン電池の粉砕物に対して、必要に応じて予備加熱工程S3を設けて加熱処理(酸化焙焼処理)を行うことができる。予備加熱工程S3において加熱処理を行うことで、電池の内容物に含まれる不純物を揮発させ、又は熱分解させて除去することができる。
熔融工程(還元熔融工程)S4では、廃リチウムイオン電池の粉砕物を、フラックスと共に熔融して、有価金属を含む合金とスラグとからなる熔融物を得る。これにより、アルミニウム等の不純物元素は酸化物としてスラグに含まれるようになり、リンもフラックスに取り込まれてスラグに含まれるようになる。他方で、酸化物を形成し難い銅等の有価金属は熔融し、熔融物から一体化した合金として回収することができる。なお、熔融物から得られる熔融状態の合金を「熔融合金」ともいう。
スラグ分離工程S5では、熔融工程S4において得られる熔融物を固化した後、固化した熔融物からスラグを分離して有価金属を含む合金を回収する。固化した熔融物に含まれるスラグと合金とは、その比重の違いにより分離しているため、スラグと合金とをそれぞれ回収することができる。
(廃電池前処理工程)
先ず、廃リチウムイオン電池として、18650型円筒型電池、車載用の角形電池の使用済み電池、及び電池製造工程で回収した不良品を用意した。そして、この廃リチウムイオン電池をまとめて塩水中に浸漬して放電させた後、水分を飛ばし、260℃の温度で大気中にて焙焼して電解液及び外装缶を分解除去し、電池内容物を得た。電池内容物の主要元素組成は、以下の表1に示されるとおりであった。
次に、電池内容物を粉砕機(グッドカッター、株式会社氏家製作所製)により粉砕し、粉砕物を得た。
次に、得られた粉砕物をロータリーキルンに投入し、大気中において、800℃の予備加熱温度で180分間の予備加熱を行った。
実施例1~3では、予備加熱工程を経て得られた加熱処理後の粉砕物、それぞれ500gに対して、加熱温度(還元温度)をそれぞれ1350℃、1400℃、1450℃に設定し、以下の条件で熔融処理する試験を行った。
熔融処理を行った後の熔融物について、比重の違いを利用して、鋳型に鋳込んだ後、メタルとスラグに分かれて固化した熔融物からスラグを分離し、合金を回収した。
下記表2に、スラグの全質量に対する、電池内容物からのコバルトの回収率と、合金中のリン品位の測定結果を示す。
Claims (4)
- リンを含有する廃リチウムイオン電池を含む原料からの有価金属の製造方法であって、
前記原料を熔融して熔融物を得る熔融工程と、
前記熔融物からスラグを分離し、有価金属を含む合金を回収するスラグ分離工程と、
を有し、
前記原料からのコバルト回収率が95.0%以上99.6%以下であることを確認して前記合金を回収することによって、該合金のリン含有量を0.1質量%以下とする、
有価金属の製造方法。 - 前記熔融工程において、生成したスラグ中のコバルト品位の分析結果から前記コバルト回収率を確認する、
請求項1に記載の有価金属の製造方法。 - 前記コバルト回収率が95.0%以上98.0%以下であることを確認して前記合金を回収する、
請求項1又は2に記載の有価金属の製造方法。 - 前記熔融工程では、1300℃以上1500℃以下の加熱温度で前記原料を熔融する、
請求項1乃至3のいずれかに記載の有価金属の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3216016A CA3216016A1 (en) | 2021-04-23 | 2022-03-25 | Method for producing valuable metal |
CN202280029501.5A CN117178067A (zh) | 2021-04-23 | 2022-03-25 | 有价金属的制造方法 |
KR1020237035476A KR20230157476A (ko) | 2021-04-23 | 2022-03-25 | 유가 금속의 제조 방법 |
EP22791486.8A EP4328339A1 (en) | 2021-04-23 | 2022-03-25 | Method for producing valuable metal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-073229 | 2021-04-23 | ||
JP2021073229A JP7124923B1 (ja) | 2021-04-23 | 2021-04-23 | 有価金属の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022224711A1 true WO2022224711A1 (ja) | 2022-10-27 |
Family
ID=83004353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/014648 WO2022224711A1 (ja) | 2021-04-23 | 2022-03-25 | 有価金属の製造方法 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4328339A1 (ja) |
JP (1) | JP7124923B1 (ja) |
KR (1) | KR20230157476A (ja) |
CN (1) | CN117178067A (ja) |
CA (1) | CA3216016A1 (ja) |
WO (1) | WO2022224711A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012172175A (ja) * | 2011-02-18 | 2012-09-10 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2012224876A (ja) * | 2011-04-15 | 2012-11-15 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2013091826A (ja) | 2011-10-25 | 2013-05-16 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2018197385A (ja) * | 2017-05-24 | 2018-12-13 | 住友金属鉱山株式会社 | リンの除去方法、有価金属の回収方法 |
JP2019135321A (ja) * | 2018-02-05 | 2019-08-15 | 住友金属鉱山株式会社 | 廃リチウムイオン電池からの有価金属の回収方法 |
WO2020013293A1 (ja) * | 2018-07-12 | 2020-01-16 | 住友金属鉱山株式会社 | 合金粉及びその製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI520410B (zh) | 2009-09-25 | 2016-02-01 | 烏明克公司 | 自鋰離子電池回收再用(valorization)金屬的方法 |
-
2021
- 2021-04-23 JP JP2021073229A patent/JP7124923B1/ja active Active
-
2022
- 2022-03-25 CN CN202280029501.5A patent/CN117178067A/zh active Pending
- 2022-03-25 EP EP22791486.8A patent/EP4328339A1/en active Pending
- 2022-03-25 WO PCT/JP2022/014648 patent/WO2022224711A1/ja active Application Filing
- 2022-03-25 CA CA3216016A patent/CA3216016A1/en active Pending
- 2022-03-25 KR KR1020237035476A patent/KR20230157476A/ko unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012172175A (ja) * | 2011-02-18 | 2012-09-10 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2012224876A (ja) * | 2011-04-15 | 2012-11-15 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2013091826A (ja) | 2011-10-25 | 2013-05-16 | Sumitomo Metal Mining Co Ltd | 有価金属回収方法 |
JP2018197385A (ja) * | 2017-05-24 | 2018-12-13 | 住友金属鉱山株式会社 | リンの除去方法、有価金属の回収方法 |
JP2019135321A (ja) * | 2018-02-05 | 2019-08-15 | 住友金属鉱山株式会社 | 廃リチウムイオン電池からの有価金属の回収方法 |
WO2020013293A1 (ja) * | 2018-07-12 | 2020-01-16 | 住友金属鉱山株式会社 | 合金粉及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2022167445A (ja) | 2022-11-04 |
CA3216016A1 (en) | 2022-10-27 |
JP7124923B1 (ja) | 2022-08-24 |
KR20230157476A (ko) | 2023-11-16 |
CN117178067A (zh) | 2023-12-05 |
EP4328339A1 (en) | 2024-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6819827B2 (ja) | 廃リチウムイオン電池からの有価金属の回収方法 | |
JP7226404B2 (ja) | 有価金属を回収する方法 | |
JP7354903B2 (ja) | 廃リチウムイオン電池からの有価金属の回収方法 | |
WO2021205903A1 (ja) | 有価金属を回収する方法 | |
WO2022009656A1 (ja) | 有価金属を回収する方法 | |
JP7359062B2 (ja) | 廃リチウムイオン電池からの有価金属の回収方法 | |
JP7124923B1 (ja) | 有価金属の製造方法 | |
JP7238939B2 (ja) | 有価金属の製造方法 | |
WO2022224719A1 (ja) | 有価金属の製造方法 | |
JP7215517B2 (ja) | 有価金属の製造方法 | |
JP7220840B2 (ja) | 有価金属の製造方法 | |
JP7342989B2 (ja) | 有価金属の製造方法 | |
JP7276361B2 (ja) | 有価金属を回収する方法 | |
WO2022009742A1 (ja) | 有価金属を回収する方法 | |
KR20240038763A (ko) | 유가 금속의 회수 방법 | |
CN117222766A (zh) | 有价金属的制造方法 | |
CA3222003A1 (en) | Method for producing valuable metal | |
JP2023121702A (ja) | 有価金属の製造方法 | |
WO2023228537A1 (ja) | リチウム含有スラグ、並びに有価金属の製造方法 |
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: 22791486 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20237035476 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18287251 Country of ref document: US Ref document number: 1020237035476 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3216016 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022791486 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: 2022791486 Country of ref document: EP Effective date: 20231123 |