Crushing sorting and recycling technology of waste lithium batteries

With the wide application of lithium batteries in electric vehicles, electronic equipment, and other fields, the recycling of used lithium batteries has become an urgent problem. How to efficiently and environmentally friendly recovery of valuable resources in the waste lithium battery is the focus of the current technical research. In this paper, we will introduce the crushing and sorting of waste lithium batteries and resource recovery technology and its key equipment.

Crushing and sorting technology

Multi-stage crushing technology is to realize multiple crushing of waste lithium batteries through the synergistic effect of primary, secondary, and tertiary crushers, to improve the crushing effect. The primary crusher crushes the waste batteries into larger pieces, the secondary crusher further grinds these pieces, and the tertiary crusher crushes the material to the ideal particle size. Multi-stage crushing can effectively improve the crushing efficiency and effect, laying the foundation for the subsequent sorting process.

Lithium battery crushing and sorting technology

Shear crushing technology uses shear machinery to cut waste batteries into smaller particles. This method is suitable for processing larger waste battery packs and batteries. Shear crushing can reduce the size of the material and increase the specific surface area, which is conducive to subsequent material sorting and resource extraction.

Sorting technology and equipment

A vibrating screen is used for the preliminary sorting of crushed materials. Through the screening effect of a vibrating screen, it can separate materials with different particle sizes and initially realize the separation of metal and non-metal materials. The vibrating screen is characterized by simple structure and easy maintenance, which is one of the important equipment in the process of crushing and sorting.

The airflow sorting machine utilizes airflow to separate particles of different densities and shapes. The airflow sorter separates heavy particles from light particles by adjusting the speed and direction of the airflow. This equipment is especially suitable for handling mixed materials, which can effectively separate metal and non-metal materials and improve the sorting precision.

The electrostatic sorting machine further separates metal and non-metal in the crushed material by electrostatic force. The electrostatic sorting machine utilizes the difference in the chargeability of different materials in the electrostatic field to separate the charged particles. This equipment plays an important role in the resource recovery process and can improve the metal recovery rate and purity.

Oxygen-free Carbonization Recovery System

The Oxygen-free Carbonization Recovery System is designed with high efficiency, high safety, and high environmental protection as the design guideline and adopts the modular design concept. The system includes the following main steps:

Oxygen free Carbonization Recovery System

Crushing: Waste battery packs are crushed by a crusher to obtain materials with an outer diameter of one to two centimeters in size. The crushed material is smaller in size, which is conducive to the subsequent carbonization process.

Carbonization: The material enters into the carbonization furnace, which is electrically heated, and the temperature inside the furnace is designed to be 500-600℃ to realize the complete carbonization of the material. During the carbonization process, the organic materials in the waste battery are decomposed, leaving the metal and inorganic materials.

Sorting: Preliminary sorting of carbonized materials is carried out by vibrating screens and other equipment. The carbonized materials are separated from different particle sizes by vibrating screens, initially realizing the separation of metal and non-metal.

Through the synergistic effect of multi-stage crushing, shear crushing, vibrating screen, airflow sorter, electrostatic sorter, and oxygen-free carbonization recovery system and other equipment, it can realize the efficient and environmentally friendly treatment of waste lithium batteries. With the continuous progress of technology, waste lithium battery recycling technology will be more perfect, if you have more understanding of waste lithium battery recycling technology needs or consider investing in this field, please feel free to contact us. We will provide you with detailed technical support and solutions.