Waste Battery

Pretreatment Process

Waste battery recycling pretreatment process

Collecting black mass in which valuable metals such as Ni, Co, and Mn are concentrated from waste batteries (NCM series waste secondary batteries, scrap, etc.) through processes such as shredding, and grinding, drying and sorting.

DJ MEX's waste battery pretreatment process largely consists of the ‘shredding-drying’ process and the ‘grinding-sorting’process.

A recycling process is being operated at a plant measuring approximately 400 pyeong in the Chungju High-Tech Industrial Complex.

pretreatment-process
Proces-flow
Shredding

Shredding

  • Input into shredder, through quantitative feeding device, conveyor belt.
  • Shredding waste batteries to facilitate drying.

    • Drying

    Drying

  • Purpose of removing organic substances, such as moisture and electrolyte, and some separators in waste batteries.
  • It consists of 4-stage dryer.

    • Cooling

    Cooling & Conveying

  • It consists of 1st scrap C/V, screw C/V, forward/reverse screw C/V, 2nd scrap C/V.
  • 1st scrap C/V and screw C/V are equipped with cooling function.
  • Dry goods can be collected through forward/reverse screw C/V.

    • Introduction to the shredding-drying process
    Grinding1 Grinding2 Grinding3

    Grinding #1-3

  • Grinding to increase black mass sorting efficiency

    • Drum separation

    Drum Separation

  • Sorting black mass from dried LIB scrap using a drum sorter
  • Highest amount of black mass collected during the process
  • A facility that forms a perforated network in a large cylinder and sorts the input materials according to particle size.

    • Cyclone Cyclone

    Cyclone Separation

  • Equipment that sorts large-sized particles using centrifugal force and gravitational sedimentation.
  • Selective collection of black mass with small particle size.

    • Introduction to the grinding-sorting process
    Vibratory Vibratory

    Vibratory Screen Separation #1-3

  • It separates materials according to particle size using a vibrating screen sorter(or circular sorter).
  • It consists of three sieves. Large particles are separated by Al/Cu/separator, small particles are separated by Black Mass, and medium particles are input into the grinding process.

    • Drum separation

    Vibratory Separation

  • It separates materials according to particle size and specific gravity using a vibrating sorter.
  • It separates Al and Cu using specific gravity difference and collects remaining Black Mass through a dust collector.
  • It consists of 2 vibrating sorters.