Explosion-ProofPneumaticConveyingofLi-SiPowderinDavao

Explosion-Proof Pneumatic Conveying of Li-Si Powder in Davao

Headpowder, officially Shandong Headpowder Engineering Co., Ltd., has successfully delivered an explosion-proof pneumatic conveying system for lithium-silicon (Li-Si) powder in Davao, Philippines. This project represents one of the most demanding pneumatic conveying cases in Southeast Asia, fully demonstrating Headpowder's expertise in handling combustible fine powders with advanced inert gas technology.

Li-Si powder is a high-capacity anode material used in lithium-ion batteries, but it is extremely reactive when exposed to oxygen or moisture. In traditional mechanical conveying, friction and dust leaks can create dangerous conditions. To guarantee safety, the Davao production facility required a closed and fully enclosed conveying method that could transport powder without any risk of ignition or explosion. After comparing several technologies and evaluating local operating conditions, the customer selected Headpowder's dense-phase pneumatic conveying system specially designed for explosion-proof operation.

Headpowder performed a comprehensive hazard analysis of the Davao facility. Based on the dust explosion characteristics of Li-Si powder, the engineering team set the maximum conveying velocity below the minimum ignition energy level. The system is equipped with explosion venting panels and a fast-acting nitrogen injection valve that can inert the entire conveying line within milliseconds. In addition, all filters are made of conductive material and properly grounded, effectively eliminating the build-up of static charge. These safety measures comply with international explosion protection standards such as ATEX and NFPA, ensuring the highest possible level of operational safety.

The core solution uses high-purity nitrogen as the conveying gas. Inside the pipeline, the oxygen content is continuously monitored and maintained below the limiting oxygen concentration (LOC). A PLC-based controller automatically adjusts nitrogen purge and supply valves to keep the system inert. If any abnormal condition is detected, the control system triggers an emergency shutdown and performs a full nitrogen flush. All electrical components are housed in ATEX-certified explosion-proof enclosures, and the entire pipeline network is grounded to prevent static discharge, which is a common ignition source for powder explosions.

The conveying line includes a pressure vessel feeder, stainless steel pipes, divert valves, an automated reverse-pulse bag filter, and a dust collector. The system operates at a low gas velocity with a high solid-to-gas ratio, which minimizes particle breakage and preserves the quality of the Li-Si powder. This dense-phase design also reduces nitrogen consumption, making the process more economical over time. Real-time sensors for pressure, flow, temperature, and oxygen concentration provide full data visibility for plant operators, and alarms are fully integrated with the existing safety network of the customer's facility.

Installation and commissioning in Davao were carried out smoothly by Headpowder's experienced engineering team. Because Davao has a tropical marine climate with high humidity and salt air, all equipment and instruments were specially treated or selected with corrosion-resistant coatings. Electrical cabinets meet the IP66 protection rating, ensuring reliable outdoor operation under extreme weather conditions. Headpowder also trained local operators and maintenance staff to monitor the PLC system, replace bag filters, and conduct routine inspection procedures. This strong after-sales support has earned high praise from the customer and further strengthens long-term cooperation.

This successful project proves that Headpowder can deliver safe, reliable, and highly efficient pneumatic conveying solutions even for the most hazardous powders. It also reinforces Headpowder's position in the Southeast Asian market, where the demand for battery material production is growing rapidly. As a leading engineering company in China, Headpowder combines innovative design, premium material quality, and strict safety standards in every project, ensuring that each system performs reliably under the most demanding conditions.

For inquiries related to pneumatic conveying cases, Southeast Asia pneumatic conveying systems, or explosion-proof pneumatic conveying equipment, please contact Headpowder. The company is headquartered in Shandong, China. Sales Manager Zhang is available for consultation and project discussion via WeChat: 15662777102. Headpowder welcomes partners and customers around the world to cooperate in developing green energy solutions and safe powder handling systems.

Keywords: pneumatic conveying case, Southeast Asia pneumatic conveying, explosion-proof pneumatic conveying.