Black Mass Roasting System (Pyrolysis)

The Black Mass Roasting Unit is a horizontal cylindrical reactor designed for the advanced thermal processing of black mass materials recovered from end-of-life lithium-ion batteries. It is equipped with an internal helical blade system that ensures continuous mixing and controlled movement of the material from top feeding to bottom discharge. The unit operates under an inert gas atmosphere and pyrolytic conditions, with the black mass being heated between 550°C and 650°C. This allows for the removal of organic binders and electrolyte residues, the controlled decomposition of polymers such as PVDF, the reduction of lithium metal oxides to their metallic or more easily leachable forms, and the structural ordering of graphite to optimize downstream separation processes.

The roasting process effectively removes organic components like PVDF binders, electrolyte residues, and plastic separators, facilitating the separation and recovery of metal oxides and graphite. The partial reduction of lithium metal oxides improves the efficiency of subsequent hydrometallurgical extraction, while the thermal treatment enhances the crystallinity of graphite, supporting more effective separation and reuse. Controlled processing conditions also minimize the formation of hazardous emissions, contributing to safer and more efficient recycling operations.

Designed to operate across a wide temperature range from 400°C to 900°C, the Black Mass Roasting Unit ensures uniform thermal exposure through its integrated helical agitation system while maintaining a stable inert environment. The horizontal cylindrical configuration and internal blade mechanism enhance heat transfer efficiency, promote material homogenization, and ensure smooth material flow throughout the process. Energy released during the decomposition of organic materials further contributes to the system’s overall thermal efficiency. Constructed from corrosion- and high-temperature-resistant alloy steels, the unit offers exceptional operational durability. By optimizing material purity and improving recovery yields, the Black Mass Roasting Unit provides a sustainable and economically viable solution for lithium-ion battery recycling.