Lithium battery recycling equipment sorting recycling copper and aluminum metal black powder
Release Time：2022-12-31 Source：Lithium battery recycling equipment Share：
Used lithium batteries contain cobalt, nickel, manganese, lithium, iron and aluminum and other metals and organic materials, the average content of lithium in ternary batteries is 1.9%, nickel is 9%, cobalt is 3%, manganese is 4%, copper is 13.3%, aluminum is 12.7%, etc.. If used lithium batteries are not recycled, it will cause great threat to the environment and pollution, and it is also a waste of resources. What are the steps of fully automatic physical recycling process and the advantages and features of lithium battery recycling equipment.
System and method of multi-stage crushing and sorting of waste lithium battery to recover copper and aluminum metal black powder, the system includes: disassembly system, crushing and screening system, primary pyrolysis system, sorting system, secondary pyrolysis system, condensation recovery system, exhaust gas treatment system, dust removal system, and inert gas system. The crushing and screening system is connected to the dismantling system and the primary pyrolysis system, the primary pyrolysis system is connected to the sorting system and the condensation recovery system, the sorting system is connected to the secondary pyrolysis system, and said dust removal system is connected to the crushing and screening system and the sorting system; the exhaust gas treatment system is connected to the condensation recovery system and the secondary pyrolysis system, respectively.
The dismantling system is used to dismantle the used lithium battery, separate the plastic and the shell, and obtain the module or the core.
The crushing and screening system includes primary crushing system, primary screening system, secondary crushing system and secondary screening system; said primary screening system is connected to the primary crushing system and secondary crushing system respectively, and the secondary screening system is connected to the secondary crushing system; the primary crushing system is used for crushing the module, the primary screening system is used for separating the plastic and the shell, the secondary crushing system is used for the material after the primary screening for Smaller particle size crushing, secondary screening system for further removal of plastic and shells
Step 1: Firstly, disassemble the used lithium battery by using the disassembly system to separate the plastic and shell to get the module or core.
Step 2: The module or core enters the crushing and screening system through the belt conveyor, the primary crushing system of the crushing and screening system is used for crushing the module, the material after primary crushing enters the primary screening system, the primary screening system is used to separate the plastic and shell; the material after primary screening enters the secondary crushing system to crush the incoming material with smaller particle size, and then goes through the secondary screening system to further remove the plastic and shells. If the one obtained in step 1 is an electric core, it directly enters the secondary crushing system; the material after the secondary screening enters the buffer box.
Step 3: The material after crushing and screening system is sent to the low-temperature pyrolysis furnace through a spiral conveyor, which is fully sealed. Materials in the low-temperature pyrolysis furnace in turn through the steps of drying, low-temperature evaporation and low-temperature pyrolysis. The inner parts of the low-temperature pyrolysis furnace are of special structure, which can make the materials evenly heated in the drying system, and at the same time, it is conducive to the shedding of black powder in the process of pyrolysis.
Step 4: The materials after primary pyrolysis are transported to the three screening devices by screw conveyor to separate out the heavy component and light component. The heavy component is separated from magnetic and non-magnetic materials by magnetic separation, and the non-magnetic materials are separated from copper and aluminum by eddy current separation. The light component enters the grinding device, and the inner parts of the grinding device are proprietary structure. In the grinding device, the black powder is stripped under the action of shear force, and the black powder and copper and aluminum mixture are separated by four times screening, and the copper and aluminum mixture is separated from copper, aluminum and a small amount of black powder by the air separation device.
Step 5: The black powder enters the secondary pyrolysis system to further remove the electrolyte and decompose the electrolyte.
Advantageous features of lithium battery recycling and processing equipment. (1) Small footprint.
(2) Mechanical stripping of black powder and binder is adopted; the recovery rate of black powder is improved and the recovery rate of black powder is >98%.
(3) The recovery rate of copper and aluminum is > 98%.
(4) Avoiding fire during the operation of the device.
(5)Electrolyte removal rate＞99%.
(6)Separate electrolyte under low temperature condition, reduce energy consumption and avoid generating large amount of exhaust gas.