The present invention relates to a lithium compound manufacturing method comprising the steps of heat treatment of lithium-containing ore; roasting the heat-treated ore with sulfuric acid to prepare an acid product; mixing the acid product with leaching water to prepare a leachate; purifying the leachate; and adding a phosphorus supply material and a basic material to the purified leachate to obtain a solid lithium phosphate.

This invention discloses a method for extracting lithium from carbonate clay type lithium ore based on ion exchange, which belongs to the field of lithium extraction technologies. This method aims to, with iron salt as the extractant, extract lithium into the solution through exchange reaction with lithium ore, which mainly involves the following steps: have clay type lithium ores crushed and ground prior to high-temperature roasting activation, and then conduct iron exchange reaction by iron salt solution while heating, followed by solid-liquid separation by means of filtration. The filtrate obtained will be lithium-bearing solution, and the extraction rate of lithium can reach as high as over 90%.

This invention discloses a method for extracting lithium from carbonate clay type lithium ore based on ion exchange, which belongs to the field of lithium extraction technologies. This method aims to, with iron salt as the extractant, extract lithium into the solution through exchange reaction with lithium ore, which mainly involves the following steps: have clay type lithium ores crushed and ground prior to high-temperature roasting activation, and then conduct iron exchange reaction by iron salt solution while heating, followed by solid-liquid separation by means of filtration. The filtrate obtained will be lithium-bearing solution, and the extraction rate of lithium can reach as high as over 90%.

A waste lithium-ion battery roasting apparatus includes: a transport mechanism including a cylindrical body, the cylindrical body containing an internal atmosphere that is a reducing atmosphere or a low-oxygen atmosphere; a heating mechanism that heats an outer wall of the cylindrical body to increase an internal temperature of the cylindrical body, and controls heating temperatures individually at which the heating mechanism heats the outer wall at different respective positions in a transporting direction in which the transport mechanism transports a waste lithium-ion battery; and a controller that controls the heating temperatures, at which the heating mechanism heats the outer wall, in accordance with a transporting speed at which the transport mechanism transports the waste lithium-ion battery, such that a temperature increase rate of the waste lithium-ion battery transported inside the cylindrical body is a predetermined temperature increase rate.

Disclosed is an incomplete extraction method for recycling batteries, which may include: introducing a pretreatment gas into a device loaded with a waste battery powder, and bringing a gas outlet into communication with absorption liquid A and absorption liquid B in order; raising the temperature and introducing the pretreatment gas; reducing the temperature and introducing a reaction gas; raising the temperature, introducing the reaction gas, and then introducing the pretreatment gas; and reducing the temperature, and turning off the pretreatment gas; adding an extractant to absorption liquid A, mixing the mixture, taking organic phase A, adding a stripping agent, and taking aqueous phase A; and adjusting the pH to acidity, then adding an extractant, taking organic phase B, adding a stripping agent to obtain a stock solution enriched in Li, Mn, Ni and Co.

Disclosed is an incomplete extraction method for recycling batteries, which may include: introducing a pretreatment gas into a device loaded with a waste battery powder, and bringing a gas outlet into communication with absorption liquid A and absorption liquid B in order; raising the temperature and introducing the pretreatment gas; reducing the temperature and introducing a reaction gas; raising the temperature, introducing the reaction gas, and then introducing the pretreatment gas; and reducing the temperature, and turning off the pretreatment gas; adding an extractant to absorption liquid A, mixing the mixture, taking organic phase A, adding a stripping agent, and taking aqueous phase A; and adjusting the pH to acidity, then adding an extractant, taking organic phase B, adding a stripping agent to obtain a stock solution enriched in Li, Mn, Ni and Co.

There is provided a process for treating particulate scrap material. The process includes emplacing the particulate scrap material and a reagent material within a calcining zone with effect that a reactive process is effected such that a calcined metal material product is obtained, and carbonylating a carbonylation precusor material with effect that a carbonylated product is obtained, wherein the carbonylation precursor material is derived from the calcined metal material product.

Provided are: an alloy powder in which nickel and cobalt can be easily dissolved in an acid and stably leached with an acid; a manufacturing method with which an alloy powder that enables stable acid leaching can be obtained at low cost; and a method for recovering a valuable metal using the manufacturing method. An alloy powder according to the present invention includes copper (Cu), nickel (Ni), and cobalt (Co) as constituents, has a 50% cumulative diameter (D50) of 30 .Math.m to 85 .Math.m in the volume particle size distribution, and has an oxygen content of 0.01 mass% to 1.00 mass%.

Provided are: an alloy powder in which nickel and cobalt can be easily dissolved in an acid and stably leached with an acid; a manufacturing method with which an alloy powder that enables stable acid leaching can be obtained at low cost; and a method for recovering a valuable metal using the manufacturing method. An alloy powder according to the present invention includes copper (Cu), nickel (Ni), and cobalt (Co) as constituents, has a 50% cumulative diameter (D50) of 30 .Math.m to 85 .Math.m in the volume particle size distribution, and has an oxygen content of 0.01 mass% to 1.00 mass%.

A method for recovering at least cobalt of valuable metals, cobalt and nickel, from an acidic solution obtained by subjecting waste containing positive electrode materials for lithium ion secondary batteries to a wet process, the acidic solution comprising cobalt ions, nickel ions and impurities, the method including: a first extraction step for Co recovery, the first extraction step being for extracting cobalt ions by solvent extraction from the acidic solution and stripping the cobalt ions; and a second extraction step for Co recovery, the second extraction step being for extracting cobalt ions by solvent extraction from a stripped solution obtained in the first extraction step for Co recovery and stripping the cobalt ions, wherein the first extraction step for Co recovery includes: a solvent extraction process for extracting cobalt ions in the acidic solution into a solvent; a scrubbing process for scrubbing the solvent that has extracted the cobalt ions; and a stripping process for stripping the cobalt ions in the solvent after the scrubbing into a solution.