Lithium-ion battery recycling

Process Brief Description

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The battery enters the continuous sealed feeding system to prevent the entry of oxygen and then enters the dual shredding system for anaerobic shredding. The shredding system uses spindle differential technology to ensure the shredding effect.

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After being shredded, it enters the anaerobic cracking system to remove the electrolyte and binder. The completely cracked materials enter the sorting system, where copper, aluminum and black powder are sorted. The qualified black powder enters the wet process.

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Exhaust gas system: The fully cracked exhaust gas passes through the secondary combustion chamber, quench tower, desulfurization tower, and catalytic absorption before being discharged to the standard.

Process Advantages

Rotary sealed feeding system

Has stable sealing and insulation performance

The feeding system adopts a new rotary seal
design made of composite insulation materials.

Efficient shredding system

With strong crushing capacity

Independently developed special shredder for lithium batteries,hazardous waste water level sealing design,multi-layer labyrinth sealing at the bearing position,main machine using enhanced shearing technology,spindle differential technology, double fixed knife structure

Pyrolysis system

High temperature roasting in pyrolysis system is safe and reliable

The high-temperature roasting kiln uses a special combined sealed multi-temperature zone control method for the lithium battery crushed material rotary kiln.

Sorting system

Has good screening effect

Independently developed variable-speed powder removal equipment, finely sorting copper and aluminum, the purity of copper and aluminum above 98%

Key Technologies

01

We adopt a new rotary sealed feeding system. All areas in contact with the battery during the entire process from the battery entering the feeding conveyor to the rotary sealed feeding system are made of composite insulating materials to ensure that the battery and the equipment will not form a short circuit. At the same time, the loading conveyor and the rotating feeding system adopt precise coordination to ensure that each battery can be independently fed into the shredding system after entering the sealed feeding system, without causing contact short circuit and ignition between batteries.

02

Waste lithium batteries contain a large amount of flexible materials (diaphragm materials). The traditional single fixed knife can easily cause material return and winding in the shredder. The new double fixed knife structure can effectively avoid the winding and material return of the pole piece.

03

The rotary kiln adopts a special combined sealing form to ensure stable oxygen content in the rotary kiln. The rotary kiln is large in size and has a certain buffer space. The requirements for oxygen content are not as stringent as low-temperature drying furnaces; it adopts a multi-temperature zone control method. , the temperature control accuracy is high, each temperature zone can control the operating temperature independently, and operates according to a certain temperature curve, making it safe and reliable during operation.

04

We use self-developed variable-speed depulverizing equipment. The structure is different from traditional blade crushers and grinders. It can reduce the degree of damage to copper and aluminum during the depulverizing process. Our company uses fine separation of copper and aluminum. After the aluminum particles are of the same size, they are sorted. The purity of the copper and aluminum products obtained is higher, and the purity of copper and aluminum is both above 98%.

05

Deep purification and dust removal system: Each section of the sorting system will generate a certain amount of dust during the sorting process. Through the combined sealing and negative pressure exhaust of the dust removal system, each dust point will be dusted under negative pressure to prevent the escape of pollutants and reduce the production process. leakage of medium dust.