A method for recovering waste lithium battery materials, comprising: (1) performing cell-disassembling on a waste lithium battery to obtain battery powder, ammonia leaching the battery powder to obtain a mixture, and subjecting the mixture to solid-liquid separation to obtain a leached solution and a filter residue; (2) adding a fluorine-phosphorus precipitating agent to the leached solution to obtain a mixture, and subjecting the mixture to solid-liquid separation to obtain a filtrate; (3) subjecting the filtrate to ammonia distillation, subjecting a mixture obtained to solid-liquid separation to obtain a filtrate and a filter residue containing basic copper carbonate and lithium carbonate; (4) washing the filter residue with water, and separating the basic copper carbonate to obtain a washing water; (5) reducing and calcining the filter residue, washing the residue, adding the washing water to the residue to collect lithium by water leaching, and filtering a mixture to obtain a filtrate.

A method of recycling batteries includes steps of: shredding the batteries to generate a shredded battery feed material, wetting the shredded battery feed material with an ammonia carbonate lixiviant to generate a slurry, separating the battery feed material in the slurry into a relatively light fraction material slurry and a relatively heavy fraction material slurry, processing the relatively light fraction material slurry in a first counter current ammoniacal leaching and decanting circuit to produce a first pregnant leaching solution including a soluble lithium (Li) component, and processing the relatively heavy fraction material slurry in a second counter current ammoniacal leaching and decanting circuit to produce a second pregnant leaching solution including, if present in the batteries, soluble nickel (Ni), cobalt (Co), zinc (Zn) and copper (Cu) components and insoluble graphite, iron (Fe), aluminum (Al), manganese (Mn) and rare earth element (REEs) components

According to the present disclosure, a recovery efficiency of Li from a recovery object such as a used lithium ion secondary battery can be improved. The manufacture method disclosed herein includes a preparation step S11 of preparing a recovery object containing at least Li, and a chlorination heating step S12 of heating the recovery object together with a non-metal chlorine compound to produce LiCl. Since LiCl is soluble in water, Li can be easily recovered from the recovery object. That means, the technology disclosed herein makes it possible to separate Li from the recovery object immediately after the chlorination heating step S12, contributing to significant improvement of Li recovery efficiency.

An object of the present disclosure is to provide a method for producing a battery material with an improved recovery rate of valuable metals. The method for producing a battery material disclosed herein comprises: a preparation step of preparing a recovery target comprising at least one of Ni and Co; an acid leaching step of immersing the recovery target in an acid liquid to obtain an acid leaching liquid; a neutralization precipitation step of mixing the acid leaching liquid and a neutralizer to obtain a precipitate; a solid-liquid separation step of separating the precipitate into solid and liquid; and an ammonia leaching step of immersing the separated precipitate in an ammonia solution containing ammonium ions to obtain an ammonia leaching liquid containing at least one of the Ni and the Co.

THIS invention relates to a method and heap for recovering metal values from ore in a heap leach process. The method includes the steps of depositing and stacking crushed ore 16 on an impermeable pad 12 to form a heap, and enclosing the heap with a substantially impermeable coating 18 to both gas and liquid; to form a sealed heap. The sealed heap is irrigated with a leachant added inside the top of the heap, allowing the leachant to percolate through the heap and removing leachant at the base of the heap, either for recirculation or subsequent processing. Oxygen containing gas is added to the base of the sealed heap.

The purpose of the present invention is to provide a solution for use in the extraction of cobalt, whereby it becomes possible to extract cobalt at lower cost and more safely compared with a case in which a conventional one is used. The solution for use in the extraction of cobalt according to the present invention comprises: an ionic liquid containing a quaternary ammonium group; and an organic solvent which exists in such a state that the organic solvent is mixed with the ionic liquid and which has a kauri-butanol value of 60 or more.

The present invention relates to compositions and processes for the extraction of metals from solid material using non-aqueous solvents and oxidisers. The processes and compositions of the present invention are useful for selectively extracting metals from solid material, particularly electronic waste material.

The present invention discloses an inventive method for manufacturing a catalyst using alloy granules having a high-Ni content. The inventive method may include providing alloy granules comprising aluminum and nickel, and treating the alloy granules with an alkaline solution to form the catalyst. A content of the nickel in the alloy granules may be within a range of about 43 wt % to about 60 wt %. The alloy granules may have effective diameters within a range of about 1 mm to about 10 mm. The catalyst may have an attrition value of less than about 7.0%.

The present disclosure provides a new method capable of efficiently collecting Ni, Co, and Mn from battery waste containing Ni, Co, and Mn. A method for recycling a positive electrode material according to the present disclosure includes: a Mn leaching step of leaching Mn into an aqueous phase by performing ammonia leaching on battery waste containing Ni, Co, and Mn under a condition that a Mn leaching rate is 70% or more, and a ratio of the Mn leaching rate is 65% or more with respect to a total of a Ni leaching rate, a Co leaching rate, and the Mn leaching rate; and a Ni and Co leaching step of leaching Ni and Co into an aqueous phase by performing ammonia leaching on a solid residue obtained in the Mn leaching step under a condition that a Mn leaching rate is less than 1%.