A safe discharge method for waste lithium ion batteries includes steps of mixing the waste lithium ion batteries and conductive particles in a discharge chamber to make the waste lithium ion batteries to discharge, calculating an internal resistance of the discharge chamber according to pressurization pressure; calculating a discharge rate of the waste lithium ion batteries; dynamically adjusting the pressurization pressure to keep the discharge rate of the waste lithium ion batteries to be 0.1-3 C; monitoring an internal temperature of the discharge chamber in real time; when the internal temperature is greater than an early warning temperature, reducing the pressurization pressure by 20%-60%; when the internal temperature is greater than a warning temperature, relieving the pressurization pressure to 0 N, reducing the pressurization pressure by 60%-90% after the internal temperature drops below the early warning temperature, and re-compacting to discharge the waste lithium ion batteries.

The crushing and classifying device of the present disclosure includes a crushing chamber into which an electrode material is inserted, a rotating shaft, a striking body, and a screen. The rotating shaft is disposed in the crushing chamber and rotates under a driving force. The striking body has a rod shape or a chain shape, and is rotatably connected at one end to the rotating shaft, and rotates in the crushing chamber by receiving a centrifugal force associated with the rotating of the rotating shaft. The screen is provided on a wall surface of the crushing chamber, and classifies the crushed electrode material. The striking body includes, at least at its distal end, an edge portion rounded to have a radius of curvature greater than or equal to 1 mm and less than or equal to 9 mm. The screen has an opening that is equal to or less than 5 mm.

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 is a battery recycling process wherein an electrochemical flow cell reactor is used to regenerate a reducing agent in an efficient manner. The reactor is decoupled from a hydrometallurgical process in which the reducing agent is used to promote the leaching and reduction of used battery materials in a stirred-tank reactor, such that these two potentially continuous reactors can be operated at independent rates. Since the electrochemical reactor effectively employs forced convective flow, it enables operation at high conversion rates with minimal overpotential and can also be preferentially operated when electrical energy is readily available while the stirred-tank reactor can be operated essentially continuously at a relatively low rate, which enables this equipment to be sized for the desired average energy consumption rate. These features reduce the capital and operation costs relative to electrochemical-based hydrometallurgical process systems taught by others.

This disclosure belongs to the field of battery recycling technologies, and specifically, to a battery recycling method. An example battery recycling method is disclosed including: performing split processing on a battery to obtain a metal shell and an electrode assembly, where the electrode assembly includes a roll core or a lamination; and recycling the metal shell. According to the recycling method in various embodiments of this disclosure, the battery is not wholly crushed, but the battery is split to obtain the metal shell and the electrode assembly. In other words, the metal shell obtained through recycling by using the recycling method in this disclosure is not crushed, thereby ensuring reusability of the metal shell.

A method for extracting metals from the black mass of lithium-ion batteries, the black mass containing the anode and cathode materials of the batteries as well as some copper, and the cathode material comprising lithium and nickel. The method of extracting metals carried out by an arrangement that is suitable for use in the method.

This disclosure provides a waste battery thermal desorption treatment system. The waste battery thermal desorption treatment system includes: a rotary kiln, having a feed port, thermal desorption cavity, heating cavity, discharge port, and first exhaust port; a dust removal apparatus, including a housing with a gas inlet port and a second exhaust port, and a dust removal structure disposed in the housing configured to collect impurities in a gas exhausted from the first exhaust port; a condenser, in communication with the second exhaust port, to condense an electrolyte constituent; and an adsorption column having a defluorination agent for dry defluorination on remaining constituents in the gaseous exhaust. This disclosure resolves the problem of low recycling efficiency of waste lithium batteries in the prior art.

A method for extracting metals from the black mass of lithium-ion batteries, the black mass containing the anode and cathode materials of the batteries, and the cathode material including lithium and nickel. An arrangement is provided that is suitable for use in the method.

A system for initiating a recycling program of consumer electronic devices, wherein the system includes a collection device configured to collect a plurality of consumer electronic devices from users, a processing unit located within a permitted facility, communicatively connected to the collection device, wherein the processing unit is configured to disassemble each consumer electronic device of the plurality of consumer electronic devices into a plurality of base components through an electronic device disassembling process, wherein the plurality of base components includes a plurality of plastic components and at least a battery component, process the plurality of base components, wherein processing the plurality of base components includes disintegrating the plurality of plastic components into a plurality of granules and decomposing the at least one battery component into a plurality of electrochemical materials, and generate a recycled output using the processed plurality of base components.

A method for treating battery waste includes: a first heat treatment step of heating the battery waste in an atmosphere containing at least one selected from the group consisting of nitrogen, carbon dioxide and water vapor; and after the first heat treatment step, a second heat treatment step of changing the atmosphere in the first heat treatment step and heating the battery waste in an atmosphere which is different from the atmosphere in the first heat treatment step and which contains a larger amount of oxygen than that in the first heat treatment step.