A manufacturing method for a positive electrode active material precursor using a batch reactor according to the present invention comprises the steps of: (S1) producing nuclei of the precursor; (S2) growing the nuclei produced in step S1; (S3) further growing the precursor particles grown in step S2; and (S4) further growing the precursor particles grown in step S3, wherein the agitation speed in the batch reactor is 200-900rpm in step S2, 800rpm or less in step S3, and 700rpm or less in step S4, and when the batch reactor is full, the reaction solution is allowed to overflow.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
2.
MANUFACTURING METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR
A manufacturing method for a positive electrode active material precursor according to the present invention comprises: a first step of producing nuclei of the precursor; and a second step of growing the nuclei produced in the first step, wherein, in the first and second steps, the flow rate with which a transition metal compound solution is added into a batch-type reactor is 15-55mLA/min, and the agitation speed in the reactor is 200-875rpm in the first step and 475rpm or lower in the second step.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
A method for recovery of valuable metals according to the present invention comprises the steps of: (S1) leaching a sulfate solution from a waste battery material; (S2) adding a phosphorus-based compound to the sulfate solution to precipitate aluminum phosphate; and (S3) solid-liquid separating the aluminum phosphate from the sulfate solution, wherein the concentration of metal sulfate contained in the sulfate solution is 90 g/L or more.
One embodiment of the present invention discloses a method for recovery of nickel from a nickel matte in a sulfide form, comprising: an atmospheric pressure leaching process that leaches nickel matte in a sulfide form at atmospheric pressure; and a pressurized leaching process that leaches atmospheric pressure leaching residue of the nickel matte obtained in the atmospheric pressure leaching process at a pressure higher than the atmospheric pressure, wherein the acid concentration of a pressurized leaching solution of the nickel matte obtained in the pressurized leaching process is in a range of 10 g/L to 40 g/L.
The present invention relates to a method for manufacturing lithium hydroxide. Particularly, according to an embodiment of the present invention, a method for manufacturing lithium hydroxide may be provided, the method comprising: a solution preparation step in which a lithium hydroxide solution containing impurities and lithium ions is prepared; a bonding acidic solution passage step in which a bonding acidic solution is passed through a chelating resin so that hydrogen ions are bonded to the chelating resin; a distilled water passage step in which, to remove the acidic solution remaining in the chelating resin, distilled water is passed through the chelating resin; a lithium hydroxide passage step in which the lithium hydroxide solution is passed through the chelating resin so that ions included in the impurities are bonded to the chelating resin; and a separating acidic solution passage step in which a separating acidic solution is passed through the chelating resin to which the impurities are bonded, so that the impurities bonded to the chelating resin are separated from the chelating resin.
B01D 15/38 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups , e.g. affinity, ligand exchange or chiral chromatography
6.
ALL-IN-ONE NICKEL SMELTING METHOD FOR NICKEL RECOVERY FROM RAW MATERIALS CONTAINING NICKEL
The present invention provides a nickel smelting method comprising: (A-i) a reduction heat treatment step of heat treating a first raw material containing nickel and lithium; (B) a first leaching step of leaching the heat treatment product generated in the reduction heat treatment step; (A-ii) a roasting step of heat treating a second raw material containing nickel and sulfur; (C) a second leaching step of leaching the first leached residue generated in the first leaching step and the roasted ore generated in the roasting step; (D) a neutralization step of neutralizing the second leached solution generated in the second leaching step; and (E) a purification step of removing impurities contained in the neutralized solution generated in the neutralization step.
The present invention provides a method for preparing a nickel sulfate aqueous solution, the method comprising: (A-i) a reduction heat treatment step of heat-treating a first raw material containing nickel and lithium; (B) a first leaching step of leaching a heat treatment product generated through the reduction heat treatment step; (A-ii) a roasting step of heat-treating a second raw material containing nickel and sulfur; (C) a second leaching step of leaching first leaching residues generated through the first leaching step and roasted ore generated through the roasting step; (D) a neutralization step of neutralizing a second leachate generated through the second leaching step; and (E) a solvent extraction step of purifying nickel from a neutralized solution generated through the neutralization step.
The present invention provides a nickel smelting method which includes: (A-i) a reduction heat treatment process of heat-treating a first raw material containing nickel and lithium; (B) a first leaching process of leaching a heat treatment product generated by the reduction heat treatment process; (A-ii) a roasting process of heat-treating a second raw material containing nickel and sulfur; (C) a second leaching process of leaching a first leaching residue generated by the first leaching process and a calcine generated by the roasting process; (D) a neutralization process of neutralizing a second leached solution generated by the second leaching process; (E) a purification process of removing impurities contained in a neutralized solution generated by the neutralization process; and (F) a precipitation process of performing a precipitation method for recovering nickel from a purified solution generated by the purification process, wherein nickel hydroxide is recovered by the precipitation process.
The present invention provides a nickel smelting method comprising: (A-i) a reduction heat treatment step for heat-treating a first raw material containing nickel and lithium; (B) a first leaching step for leaching a heat-treated product produced by the reduction heat treatment step; (A-ii) a roasting step for heat-treating a second raw material containing nickel and sulfur; (C) a second leaching step for leaching a first leaching residue produced by the first leaching step and a roasted ore produced by the roasting step; (D) a neutralization step for neutralizing a second leachate produced by the second leaching step; (E) a purification step for removing impurities contained in a neutralized solution produced by the neutralization step; and (F) a reduction step for performing hydrogen reduction on a purified solution produced by the purification step to recover nickel from the purified solution.
The present invention provides a nickel smelting method comprising: (A-i) a reduction heat treatment process for heat-treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product generated in the reduction heat treatment process; (A-ii) a first roasting process for heat-treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue generated in the first leaching process and the roasted ore generated in the first roasting process; (D) a neutralization process for neutralizing the second leachate generated in the second leaching process; (E) a purification process for removing impurities contained in the post-neutralization solution generated in the neutralization process; (F) a precipitation process for performing precipitation on the post-purification solution generated in the purification process; and (G) a second roasting process for recovering nickel from the precipitated residue by roasting the precipitated residue generated in the precipitation process.
A nickel recovering method includes: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a first roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the first roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process; (F) a precipitation process for performing precipitation on the purified solution produced by the purification process; and (G) a second roasting process for roasting the precipitated residue produced by the precipitation process to recover nickel.
Provided herein is a nickel recovering method, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process; and (F) a precipitation process of performing a precipitation method to recover nickel from the purified solution produced by the purification process, and a nickel hydroxide is recovered by the precipitation process.
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
Provided herein is a nickel recovering method, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; and (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process.
Provided herein is a method for preparing a nickel sulfate aqueous solution, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and the calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leached solution produced by the second leaching process; and (E) a solvent extraction process for refining nickel in the neutralized solution produced by the neutralization process.
Provided herein is a nickel recovering method, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process; and (F) a reduction process for performing a hydrogen reduction method on the purified solution produced by the purification process to recover nickel from the purified solution.
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
A treatment method of a waste battery according to the present invention comprises: a discharge process for discharging waste batteries; a disassembly process for disassembling the discharged waste batteries into individual cells; a crushing process for crushing the disassembled waste batteries; a firing process for firing the waste batteries crushed into the individual cells; a grinding process for grinding the fired waste batteries; and a wet process for extracting and collecting metal from the ground waste batteries.
A method for producing manganese sulfate solution using a sulfur dioxide gas reduction leaching method according to an embodiment of the present invention comprises: a raw material preparation step for preparing a manganese-containing by-product containing manganese and impurities; a pulverizing step and a cleaning step for pulverizing and cleaning the manganese-containing by-product; a reduction leaching step for leaching the manganese-containing by-product pulverized by the pulverizing step and the cleaning step; a neutralization step for neutralizing the leached solution produced through the reduction leaching step; a first purification step for purifying the neutralized solution produced through the neutralization step; and a second purification step for further purifying the first purified solution produced through the first purification step, wherein the reduction leaching step is performed using inorganic acid and sulfur dioxide gas.
The present invention relates to a method for recovering lithium. Provided according to an embodiment of the present invention may be a method for recovering lithium, the method comprising the steps of: preparing a lithium-containing solution containing lithium ions; exchanging the lithium ions with the ions included in the chelate resin so that the lithium ions are bonded to the chelate resin while the lithium-containing solution passes through the chelate resin; and passing an acidic solution through the chelate resin to which the lithium ions are bonded so that the lithium ions are separated from the chelate resin.
C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
19.
METHOD FOR PRODUCING NICKEL SULFATE SOLUTION FOR SECONDARY BATTERY FROM NICKEL CATHODE
A method for producing a nickel sulfate solution includes a leaching step of leaching a nickel cathode in sulfuric acid under a high temperature and a high pressure to produce a leachate, a neutralization step of neutralizing the leachate produced in the leaching step to produce a neutralized solution, and a filtration step of filtering the neutralized solution produced in the neutralization step to produce a filtrate.
A method for producing an aqueous solution containing nickel, cobalt and manganese, includes: a leaching process including a pressure-leaching process of leaching a raw material under pressure to form a leachate containing nickel, cobalt, manganese and impurities; an impurity removal process of removing the impurities from the leachate; a target substance precipitation process of precipitating a mixed hydroxide precipitate containing nickel, cobalt and manganese by introducing a neutralizing agent into a filtrate from which the impurities are removed; and a dissolution process. The pressure-leaching process includes a first-stage pressure-leaching process and a second-stage pressure-leaching process of pressure-leaching a residue of the first-stage pressure-leaching process with an acidity higher than an acidity in the first-stage pressure-leaching process. The impurity removal process includes a first-stage solvent extraction process of selectively extracting zinc from the impurities and a second-stage solvent extraction process of selectively extracting magnesium from the impurities.
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
A method for producing a nickel sulfate solution includes a leaching step of leaching a nickel cathode in sulfuric acid under a high temperature and a high pressure to produce a leachate, a neutralization step of neutralizing the leachate produced in the leaching step to produce a neutralized solution, and a filtration step of filtering the neutralized solution produced in the neutralization step to produce a filtrate.
B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
The embodiments disclosed herein relates to a method for producing a secondary battery material from black mass. The method for producing a secondary battery material from black mass according to one embodiment includes a roasting step of roasting black mass, a pre-extraction step of leaching a roasted black mass roasted in the roasting step with water to separate a lithium solution and a cake, a first evaporation concentration step of producing lithium carbonate crystals by evaporating and concentrating the lithium solution produced in the pre-extraction step, a leaching step of leaching the cake separated in the pre-extraction step, a first purification step of removing copper and aluminum from the leaching solution produced in the leaching step, a post-extraction step of neutralizing the solution prepared in the first purification step and separating the solution into a lithium solution and a cake containing Ni, Co, and Mn (NCM cake), a feeding step of feeding the lithium carbonate crystals produced in the first evaporation concentration step and the lithium solution prepared in the post-extraction step to a lithium hydroxide production step.
A method for producing an aqueous solution containing nickel or cobalt includes: (A) a leaching step, which includes a first atmospheric pressure heating leaching step and a second atmospheric pressure heating leaching step, in which a raw material is heated and leached under an atmospheric pressure to form a leachate solution containing nickel, cobalt, and impurities; (B) a first extraction step of separating the leachate solution into a first filtrate containing nickel and impurities and a first organic layer containing cobalt and impurities by adding a first solvent extractant to the leachate solution; (C-i) a precipitation removal step of precipitating and removing impurities including magnesium, calcium, or a mixture thereof by adding a precipitating agent to the first filtrate; and (D-i) a target material precipitation step of selectively precipitating a nickel cake containing nickel by adding a neutralizing agent to the first filtrate.
The embodiments disclosed herein relates to a method for producing a secondary battery material from black mass. The method for producing a secondary battery material from black mass according to one embodiment includes a roasting step of roasting black mass, a pre-extraction step of leaching a roasted black mass roasted in the roasting step with water to separate a lithium solution and a cake, a first evaporation concentration step of producing lithium carbonate crystals by evaporating and concentrating the lithium solution produced in the pre-extraction step, a leaching step of leaching the cake separated in the pre-extraction step, a first purification step of removing copper and aluminum from the leaching solution produced in the leaching step, a post-extraction step of neutralizing the solution prepared in the first purification step and separating the solution into a lithium solution and a cake containing Ni, Co, and Mn (NCM cake), a feeding step of feeding the lithium carbonate crystals produced in the first evaporation concentration step and the lithium solution prepared in the post-extraction step to a lithium hydroxide production step.
The present invention provides a method for producing an aqueous solution containing nickel or cobalt, the method comprising: (A) a leaching step for leaching a raw material under atmospheric pressure to form a leachate containing nickel, cobalt, and impurities, the leaching step including a first atmospheric pressure heated leaching step and a second atmospheric pressure heated leaching step; (B) a first extraction step for introducing a first solvent extractant to the leachate to separate the leachate into a first filtrate, containing nickel and impurities, and a first organic layer, containing cobalt and impurities; (C-i) a precipitation removal step for introducing a precipitant to the first filtrate to precipitate and remove impurities including magnesium, calcium, or a mixture thereof; and (D-i) a target material precipitation step for selectively precipitating a nickel cake containing nickel by introducing a neutralizing agent to the first filtrate that has had the impurities precipitated and removed.
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
26.
METHOD FOR PRODUCING NICKEL SULFATE SOLUTION FOR SECONDARY BATTERY FROM NICKEL CATHODE
The present invention provides a method for producing a nickel sulfate solution, the method comprising: a leaching step for leaching a nickel cathode in sulfuric acid at high temperature and high pressure; a neutralization step for neutralizing a leachate from the leaching step; and a filtration step for filtering a neutralized solution obtained from the neutralization step, and thereby producing a filtrate.
The present invention provides a method for producing an aqueous solution containing nickel, cobalt, and manganese, the method comprising: a leaching step including a pressure leaching step for forming a leachate containing nickel, cobalt, manganese, and impurities by pressure leaching a raw material; an impurity removal step for removing the impurities from the leachate; a target material precipitation step for precipitating a mixed hydroxide precipitate containing nickel, cobalt, and manganese by introducing a neutralizing agent to the leachate that has had the impurities removed; and a dissolution step for dissolving the mixed hydroxide precipitate in an acid, wherein the pressure leaching step includes a first-stage pressure leaching step and a second-stage-pressure leaching step for pressure leaching residue from the first-stage pressure leaching step at a higher acidity than the first-stage pressure leaching step, and the impurity removal step includes a first-stage solvent extraction step, in which a first solvent extractant is added to selectively extract zinc from the impurities, and a second-stage solvent extraction step, in which a second solvent extractant is added to selectively extract magnesium from the impurities.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
28.
METHOD FOR PREPARING SECONDARY BATTERY MATERIAL FROM BLACK MASS
Embodiments of the present disclosure relate to a method for preparing a secondary battery material from black mass. The method for preparing a secondary battery material from black mass, according to one embodiment, comprises: a firing step of firing black mass; a pre-extraction step of dissolving, in water, the black mass fired in the firing step, thereby separating same into a lithium solution and a cake; a first evaporation concentration step of evaporating and concentrating the lithium solution produced in the pre-extraction step, thereby preparing a lithium carbonate crystal; a leaching step of leaching the cake separated out in the pre-extraction step; a first purification step of removing copper and aluminum from the leaching solution produced by means of the leaching step; a post-extraction step of neutralizing the solution obtained from the first purification step, thereby separating same into a lithium solution and a cake (NCM cake) comprising Ni, Co and Mn; and a transfer step of transferring, to a lithium hydroxide preparation step, the lithium carbonate crystal produced by means of the first evaporation concentration step and the lithium solution separated out by means of the post-extraction step.
The embodiments disclosed herein relates to a method for producing a secondary battery material from black mass. The method for producing a secondary battery material from black mass according to one embodiment includes a roasting step of roasting black mass, a pre-extraction step of leaching a roasted black mass roasted in the roasting step with water to separate a lithium solution and a cake, a first evaporation concentration step of producing lithium carbonate crystals by evaporating and concentrating the lithium solution produced in the pre-extraction step, a leaching step of leaching the cake separated in the pre-extraction step, a first purification step of removing copper and aluminum from the leaching solution produced in the leaching step, a post-extraction step of neutralizing the solution prepared in the first purification step and separating the solution into a lithium solution and a cake containing Ni, Co, and Mn (NCM cake), a feeding step of feeding the lithium carbonate crystals produced in the first evaporation concentration step and the lithium solution prepared in the post-extraction step to a lithium hydroxide production step.
A method for producing an aqueous solution containing nickel or cobalt includes: (A) a leaching step, which includes a first atmospheric pressure heating leaching step and a second atmospheric pressure heating leaching step, in which a raw material is heated and leached under an atmospheric pressure to form a leachate solution containing nickel, cobalt, and impurities; (B) a first extraction step of separating the leachate solution into a first filtrate containing nickel and impurities and a first organic layer containing cobalt and impurities by adding a first solvent extractant to the leachate solution; (C-i) a precipitation removal step of precipitating and removing impurities including magnesium, calcium, or a mixture thereof by adding a precipitating agent to the first filtrate; and (D-i) a target material precipitation step of selectively precipitating a nickel cake containing nickel by adding a neutralizing agent to the first filtrate.
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
A method for recovering lithium includes: preparing a lithium-containing solution containing lithium ions; exchanging the lithium ions with ions contained in a chelate resin so that the lithium ions are bonded to the chelate resin while the lithium-containing solution passes through the chelate resin; and allowing an acidic solution to pass through the chelate resin to which the lithium ions are bonded, so that the lithium ions are separated from the chelate resin.
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
A waste battery processing method includes a discharging process of discharging a waste battery, a dismantling process of dismantling the discharged waste battery into battery cell units, a shredding process of shredding the dismantled waste battery, a roasting process of roasting the shredded waste battery, a pulverizing process of pulverizing the fired waste battery, and a hydrometallurgical process of extracting and recovering metals from the pulverized waste battery.
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
38.
METHOD FOR PRODUCING NICKEL SULFATE SOLUTION FOR SECONDARY BATTERY FROM NICKEL CATHODE
A method for producing a nickel sulfate solution includes a leaching step of leaching a nickel cathode in sulfuric acid under a temperature of 170 degrees C to 200 degrees C and a pressure of 8.5 bar to 16 bar to produce a leachate, a neutralization step of neutralizing the leachate produced in the leaching step to produce a neutralized solution, and a filtration step of filtering the neutralized solution produced in the neutralization step to produce a filtrate, wherein a nickel concentration in the neutralized solution after the neutralization step is 120 to 140 g/L.
A method for producing an aqueous solution containing nickel, cobalt and manganese, includes: a leaching process including a pressure-leaching process of leaching a raw material under pressure to form a leachate containing nickel, cobalt, manganese and impurities; an impurity removal process of removing the impurities from the leachate; a target substance precipitation process of precipitating a mixed hydroxide precipitate containing nickel, cobalt and manganese by introducing a neutralizing agent into a filtrate from which the impurities are removed; and a dissolution process. The pressure-leaching process includes a first-stage pressure-leaching process and a second-stage pressure-leaching process of pressure-leaching a residue of the first-stage pressure-leaching process with an acidity higher than an acidity in the first-stage pressure-leaching process. The impurity removal process includes a first-stage solvent extraction process of selectively extracting zinc from the impurities and a second-stage solvent extraction process of selectively extracting magnesium from the impurities.
C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
Provided herein is a nickel recovering method, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; and (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process.
A method for producing an aqueous manganese sulfate solution using a sulfur dioxide gas reduction leaching method includes: a raw material preparation process of preparing a manganese-containing by-product containing manganese and impurities; a pulverizing and washing process of pulverizing and washing the manganese-containing by-product; a reduction leaching process of leaching a pulverized manganese-containing by-product obtained by the pulverizing and washing process; a neutralization process of neutralizing a leached liquid produced in the reduction leaching process; a first purification process of purifying a neutralized liquid produced in the neutralization process; and a second purification process of further purifying a first-purified liquid produced in the first purification process. The reduction leaching process is performed using an inorganic acid and a sulfur dioxide gas.
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
patents
