A method for recovering valuable metals from a spent secondary battery includes a pre-processing process of pre-processing the spent secondary battery, a melting process of heating the pre-processed spent secondary battery to generate a molten solution, and a recovery process of recovering the valuable metals from the molten solution. In the melting process, a chlorinating agent is added, and, in the recovery process, lithium is recovered in a form of lithium dust.

Disclosed is a method for repairing a waste silicon-carbon material which relates to the technical field of secondary batteries. The method for repairing a waste silicon-carbon material includes the following steps: (1) pretreating the waste silicon-carbon material to obtain a powdery mixture; (2) mixing the powdery mixture obtained in step (1) with an metal-organic framework compound, and washing and drying the mixture to obtain a black powder; and (3) mixing the black powder obtained in step (2) with graphite, calcining the mixture in an acetylene atmosphere, and subjecting the calcined product to vapor deposition, cooling, washing and drying to obtain a silicon-carbon material.

Disclosed are solutions for the recovery of elemental metals at industrial scales without smelting including, for example, the recovery of near-pure lead from recycled LABs via specialized electrolytic processing. Further disclosed are new processes, innovative electrolyzer designs, and/or novel utilization of supplemental chemicals necessary for successful electrolysis of pure metal from impure forms (e.g., pure lead from lead oxides), and especially applicable for solid-state electrolysis of mixtures comprising lead paste, electrolyte, and supplemental chemicals. With particular regard to recovering near-pure lead during LAB recycling, solid-state electrolysis of mixtures comprising impure lead (e.g., lead paste) is made possible by electrolytic processing using supplemental chemicals, and made scalable to industrial levels via utilization of a vertically-arranged series of horizontal bipolar cathodes in an electrolyzer assembly.

An automated battery disassembly system according to one embodiment includes: a workstation including a first worktable, a second worktable, a third worktable, and a discharging worktable; a discharging device; a robot device; a transfer device; and a controller electrically connected to the robot device and the transfer device. The controller is configured to control the robot device to: when a battery pack is disposed on the first worktable, separate an upper cover from the battery pack; when the battery pack is disposed on the discharging worktable, discharge the battery pack by connecting the battery pack to the discharging device; when the discharged battery pack is disposed on the second worktable, separate a battery module from the discharged battery pack; and when the battery module is disposed on the third worktable, separate battery cells from the battery module.

A method to recycle graphite from lithium and sodium-ion batteries. Graphite from the batteries first is treated in an aqueous solution of strong base at a temperature range between about 100? C. and about 250? C., a pressure range between about 0.9 bar and about 20 bar, at a solid-to-liquid ratio of from about 1-to-1 to about 1-to-4. The treated graphite is then washed, filtered, and then treated with a mineral acid (e.g., hydrochloric acid). The purified graphite is then coated with amorphous carbon at a weight percentage range between 0.5 wt % and about 20 wt %. The recycled graphite yielded by the method routinely achieves a purity >99.9%, a specific area of less than or equal to about 10 m.sup.2/g.

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.

The present disclosure provides a lithium-ion battery cathode material recovery system and a lithium-ion battery cathode material recovery method, wherein the lithium-ion battery cathode material recovery system includes a crusher, a dryer, a first separator, a first vibrating screen, a second separator, a second vibrating screen and an eddy current separator, and a dust collector for recovering dust generated in the first separator, the second separator, the first vibrating screen, and the second vibrating screen, and wherein the crusher, the dryer, the first separator, the first vibrating screen, the second separator, the second vibrating screen, the eddy current separator, and the dust collector are sealed to prevent the inflow of external air, and are operated in an inert gas environment.

The method for recovering lithium hydroxide from a lithium secondary battery allows a powder comprising lithium and valuable metals to be prepared from the lithium secondary battery. The powder is reduced to form a preliminary precursor mixture including a preliminary lithium precursor and valuable metal-containing particles. The preliminary precursor mixture is primarily washed with water (H.sub.2O) to generate a lithium precursor aqueous solution and a precipitate. The lithium precursor is recovered through solid-liquid separation of the lithium precursor aqueous solution and the precipitate. The lithium precursor is recovered, through additional washing and solid-liquid separation, from the precipitate obtained through the solid-liquid separation. A calcium compound is added in the primary washing operation or the additional washing operation. Therefore, a highly-pure lithium precursor can be obtained without a complex leaching process and additional processes resulting from a wet process of an acid solution.

The present invention discloses an apparatus for disassembling a pouch type battery that performs a pouch type battery separation process. The apparatus for disassembling a pouch type battery includes a pouch type battery disassembling unit configured to perform a process of transferring and disassembling the pouch type battery; and a controller configured to monitor an operating state of the pouch type battery disassembling unit and control the process of disassembling the pouch type battery by controlling an operation of the pouch type battery disassembling unit. The pouch type battery disassembling unit includes a battery input unit configured to check residual voltages of each of a plurality of input batteries, and divide the batteries on which the residual voltages have been checked into disassembly unsuitable batteries whose measured residual voltages are a predetermined allowable value or more and disassembly suitable batteries whose measured residual voltages are less than the predetermined allowable value, then discharge the disassembly unsuitable batteries to an outside; a pouch removal unit configured to remove a pouch of the disassembly suitable battery; and a 3-stage separation unit configured to separate the battery from which the pouch is removed into a separation membrane, an anode material, and a cathode material, respectively.

Disclosed is a disassembling mechanism for a waste battery module, including a substrate; the substrate is provided with a clamping mechanism, a cutting mechanism, a placement platform, a storage box, a traction mechanism and a linkage mechanism at a top portion; the linkage mechanism includes a sliding rod, a sliding block, a linkage rack and a gear box; and the traction mechanism is fixed at one end of the clamping mechanism far away from the placement platform, and one end of a traction member of the traction mechanism is connected with the cutting mechanism, and the other end of the traction member is connected with the sliding block.