At a lithium battery materials production base in Longyan, Fujian, a complete nitrogen sealed lithium battery powder transportation project was successfully put into operation. This project targets high-value, easily oxidized, and flammable lithium battery cathode and anode powders, adopting a fully sealed nitrogen protection and transportation solution, achieving dust-free, safe, and automated operations throughout the entire process from powder feeding to storage, thereby improving production line operational efficiency and safety.

Customer pain points

Lithium battery powder faces three major challenges during traditional open or semi-sealed transportation: First, the powder easily oxidizes when exposed to air, leading to a decline in material performance; Second, the dust from the workshop caused dust pollution, endangering the health of operators; Third, lithium battery powder is electrostatic sensitive and flammable, and conventional transportation methods pose explosion hazards. The customer urgently needed a system solution that could both isolate air while ensuring stable delivery and meeting explosion-proof requirements.

Solution

To address these pain points, Head Powder has designed a fully enclosed pneumatic conveying system using nitrogen as the carrier. The core of the system includes: nitrogen generator, sealed conveying pipelines, explosion-proof valves, intelligent control cabinets, and multi-stage dust removal devices. By precisely controlling nitrogen flow and pressure, powder is suspended and transported in closed pipelines, with no leakage or air mixing throughout. The system is equipped with online oxygen content monitoring and automatic nitrogen replenishment functions, helping to keep oxygen concentration in pipelines below safety thresholds, eliminating oxidation and explosion risks at the source. At the same time, modular design allows flexible expansion according to production capacity and integration with the factory's MES system to achieve digital operation and maintenance.

System highlights

• Fully sealed nitrogen protection: The conveying pipeline uses argon arc welding technology, with all flange joints equipped with sealing gaskets to prevent air from entering; Adjustable nitrogen purity to meet different powder protection requirements.
• Explosion-proof and safety design: All electrical components meet explosion-proof requirements. The pipeline is equipped with explosion vents and emergency shut-off valves, combined with a flame detection system to facilitate rapid response to abnormal situations.
• Intelligent control:P LC+ touchscreen control, real-time display of nitrogen flow, pipeline pressure, oxygen content, and other parameters, supports remote monitoring and fault alarms, and is easy to operate.
• Low energy consumption and energy saving: Utilizes high-efficiency vortex air pumps and intelligent variable frequency technology, saving about 20% energy compared to traditional Roots blowers, with high nitrogen recycling rates and reduced operating costs.