Process Overview
Recycling
The composition of discarded mobile phone batteries and discarded laptops batteries consists of lithium cobalt oxide (31%), copper (17%), aluminum (8%), iron (5%), polyvinylidene fluoride (4%), electrolyte (10%), polyethylene (3%) and carbon (22%) (Jacoby 2019).
The mean average surface diameter of mobile phone batteries and laptop batteries is 92.885mm (Rhodes 2008). According to the structural characteristics of metals and non-metals of mobile batteries scrap an environmentally friendly process is adopted to extract valuable materials from mobile batteries scrap. The extracted materials are used to manufacture lithium ion battery cells.
Workflow
Raw Materials
Cathodic Extraction
The waste batteries are transported to the shredder by belt conveying and feeding device, and entered into the shredder and shredded to an average mean particle size of 6.084702mm.
The shredded particles are transported by a belt conveyor to the pyrolysis vessel at 343.15K so that the electrolyte(which consists of lithium hexafluoride, ethylene carbonate, dimethyl carbonate and diethyl carbonate in equal proportions) thermally decomposes to solid lithium fluoride, liquid trimethyl phosphate and gaseous fluoroethane which is collected by a pipe on top of the pyrolysis vessel (Kawamura T 2002).
After pyrolysis the pyrolysed particles are transported with conveyor belts to the crusher thus crushing the particles for the second time to mean particle size of 1.48mm and fine particles crushed of mean particle size of 660μm are transported by the pipes on top of the crusher to the hydrocyclone.
The crushed materials from the crusher enters the linear screening machine with an aperture size of 1.5mm via the conveyor belt and separates 92.6% lithium cobalt powder which is transported by conveyor belts to the dense medium separator with bromoform of specific gravity of 2.96 which separates 100% of copper and nickel in the 92.6% lithium cobalt powder thus transporting the separated copper and iron using conveyor belt to the storage hopper and transporting 98% lithium cobalt powder with mean particle size of 2mm using conveyor belt to the storage hopper.
The 98% lithium cobalt powder with mean particle size of 2mm is transported to a mixing vessel filled with water to dissolve the high soluble lithium hexafluoride and solvents such as ethylene carbonate, dimethyl carbonate trimethyl phosphate and partially low soluble diethyl carbonate.
Read our full technical proposal papers for recycling and purification process.
Metals and metal compounds
Through advanced refining processes, Relithia Energy offers a wide range of ultra-pure recycled metals, compounds, and alloys matching the quality of primary raw materials
Equipments Implemented
(Recycling Plant)
Processing volume: 200kg/h
Power: 124KW
Lithium battery manufacturing production line is used for the disassembly of lithium batteries, such as soft packaging batteries, mobile phone batteries, laptop batteries, surgical batteries, cylindrical batteries, etc. Valuable materials are extracted such as li. The final products are prismatic lithium cobalt oxide, iron, copper and aluminum.
Vibrating Feeder
The vibrating feeder delivers a uniform stream of a mixture of mobile batteries scrap to the conveyor belt. It is mainly made up of steel.
Belt conveyors
Developed for the transportation of waste batteries. The belt is made of green anti-static PVC belt with a thickness of 4.0mm, and the baffles are evenly distributed at 400mm intervals.
Pyrolysis
The equipment is used to incinerate mobile batteries scrap at an optimum temperature.
Hammer crusher
Hammer crusher is suitable for crushing shredded mobile batteries scrap into pellets, thereby reducing transportation costs and increasing the speed of reprocessing.
Mixing vessel
The equipment mixes particles of mobile batteries scrap with water.
Filter press
This equipment is used to separate solid particles in mobile batteries scrap from water.
Recycle Your Batteries Responsibly
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