At the lithium battery material production base in Lu'an, Anhui, a well-known new energy company faced technical challenges such as the tendency of lithium battery powder materials to oxidize, absorb moisture, and cause caking during transportation. Traditional open or unprotected conveying methods result in unstable powder quality and large batch differences, directly affecting the coating consistency of lithium battery electrodes and the final cell performance. At the same time, safety hazards and raw material losses caused by static electricity and dust emissions have become core pain points that customers urgently need to address.

Targeted solutions

Head Powder designed a full-process inert gas protected pneumatic conveying system for this customer's special needs. The system uses high-purity nitrogen as the delivery medium, completing the entire process from raw material silos to intermediate silos and then to weighing and batching units within sealed pipelines. Online oxygen monitoring and automatic replenishment devices are installed at key locations, helping the system maintain internal oxygen concentration below the material's spontaneous combustion/oxidation threshold. At the same time, through multi-stage arch breaking, fluidized feeding, and low-flow conveying technology, powder deposition and particle damage on the pipe wall are avoided, achieving stable, safe, and high-quality material transfer.

Core values and results

After the project was put into operation, the oxygen increase in the customer's lithium battery cathode powder was controlled within 0.02%, moisture content reduced by more than 60%, and product batch uniformity improved. Since system operation, there have been no dust leaks, no equipment blockages, and no safety incidents, with annual maintenance costs reduced by about 35% compared to before the renovation. This project has become a mature example in the field of inert gas protective transportation for lithium battery powders, providing a reliable reference for the safe transport of similar highly active, high-value powder materials.