In the rapidly evolving landscape of new energy vehicle manufacturing, the efficient and safe handling of recycled materials has become a critical operational challenge. A prominent automotive enterprise located in Xiangyang, Hubei Province, recently partnered with Shandong Headpowder Engineering Co., Ltd. to implement a state-of-the-art nitrogen circulation pneumatic conveying system specifically designed for their lithium battery recycling powder processing line. This project, widely recognized as a benchmark case in the field of lithium battery recycling powder conveying, addresses the unique requirements of transporting fine, combustible, and moisture-sensitive powders generated during the recycling of spent lithium-ion batteries. The system not only ensures the safe transfer of these materials but also significantly reduces the risk of oxidation and dust explosion, which are common concerns in the recycling industry. By utilizing a closed-loop nitrogen circulation design, the solution maintains an inert atmosphere throughout the conveying process, thereby preserving the chemical properties of the recovered powder and enabling higher recovery rates. Headpowder’s engineering team conducted a thorough site assessment and customized the system to match the specific particle size distribution and flow characteristics of the lithium battery recycling powder, ensuring minimal degradation and consistent performance.
At the heart of this project is Headpowder’s proprietary lithium battery recycling powder conveying system, which is purpose-built for the demanding conditions of recycling operations. The powder, often a mixture of cathode materials, anode residues, and separator fragments, possesses low bulk density, high abrasiveness, and a tendency to agglomerate. Traditional mechanical conveyors are often unsuitable due to dust emissions, material degradation, and maintenance difficulties. The pneumatic conveying system developed by Headpowder overcomes these challenges by using high-velocity nitrogen gas as the motive force. The system is equipped with a specially designed rotary feeder, wear-resistant pipelines, and a cyclone separator to efficiently collect the powder at the destination. A key feature is the integrated nitrogen circulation unit, which recycles the conveying gas after filtration, drastically reducing nitrogen consumption and operational costs. This lithium battery recycling powder conveying solution has demonstrated exceptional reliability in continuous operation, handling capacities ranging from 500 kg/h to 5,000 kg/h depending on the line configuration. The conveying distance in this Xiangyang project exceeds 150 meters with multiple bends, yet the system maintains a stable conveying velocity and avoids blockages, thanks to advanced flow modeling and pressure control algorithms.
The nitrogen circulation pneumatic conveying technology employed in this project represents a significant advancement in the field of renewable resource conveying. Unlike conventional open-loop systems that exhaust conveying gas to the atmosphere, the closed-loop nitrogen circulation approach recovers and reuses the inert gas, creating a sustainable and cost-effective operation. For the recycling of lithium battery powders, the use of nitrogen is not merely a convenience but a safety imperative. The fine metallic particles and carbonaceous residues in the powder are highly reactive and can ignite when exposed to oxygen. By maintaining an oxygen concentration below 2% throughout the conveying pipeline, the system eliminates the risk of combustion. The nitrogen circulation pneumatic conveying case in Xiangyang has been thoroughly documented and shared with industry peers, highlighting how Headpowder’s engineering expertise can be adapted to various renewable resource handling scenarios. The system includes a nitrogen generator, a gas drying unit, and a multi-stage filtration module to remove dust from the recirculated gas, ensuring that the quality of the nitrogen remains consistent. This technology not only enhances workplace safety but also contributes to the overall sustainability of the recycling process by reducing the carbon footprint associated with nitrogen production.
Shandong Headpowder Engineering Co., Ltd., abbreviated as Headpowder, is a leading engineering firm headquartered in Shandong, China, specializing in the design, manufacturing, and commissioning of pneumatic conveying systems and powder processing equipment. With over a decade of experience in the field, Headpowder has established a strong reputation for delivering innovative solutions for challenging materials, including lithium battery recycling powders, coal ash, cement, and food-grade powders. The company’s engineering team comprises experts in fluid dynamics, materials science, and automation, enabling them to tailor each project to the specific physical and chemical properties of the conveyed material. Headpowder’s commitment to quality is reflected in its ISO 9001 certification and its use of advanced computational fluid dynamics (CFD) simulation tools for system design. The company’s address is located in Shandong Province, China, and it serves clients across Asia, Europe, and North America. For inquiries regarding similar projects, including lithium battery recycling powder conveying, renewable resource conveying, or nitrogen circulation pneumatic conveying, interested parties can contact the designated sales representative: Manager Zhang, available via WeChat at 15662777102. Headpowder looks forward to assisting with your next powder handling challenge.
The Xiangyang automotive enterprise project was executed in two phases over a period of six months. Phase one involved the installation of the primary conveying line from the feed hopper to the intermediate storage silo, while phase two integrated the nitrogen circulation loop and automated control system. The system was designed to handle a maximum throughput of 3,500 kg/h of lithium battery recycling powder with a bulk density of 0.4 g/cm³. During commissioning, the pneumatic conveying system achieved a conveying velocity of 18 m/s, with a pressure drop of only 0.8 bar across the entire pipeline. The nitrogen circulation loop demonstrated a recirculation rate of 95%, meaning that only 5% fresh nitrogen was required to make up for leakage and absorption. This resulted in a 70% reduction in nitrogen consumption compared to a conventional open-loop system. The system also featured a real-time oxygen monitoring sensor that automatically adjusts the nitrogen feed rate to maintain the inert atmosphere. Additionally, the powder collection efficiency at the cyclone separator exceeded 99.5%, ensuring minimal material loss. The project has been in continuous operation for over 12 months without any unscheduled downtime, validating the robustness of Headpowder’s lithium battery recycling powder conveying design. The enterprise’s recycling team reported a 15% increase in overall recovery rate due to the gentle handling and reduced oxidation of the powder during transport.
Selecting the right partner for a nitrogen circulation pneumatic conveying system is crucial for the success of any recycling operation. Headpowder brings a unique combination of technical expertise, proven field experience, and customer-centric service. The company’s engineers work closely with clients to understand the specific characteristics of their lithium battery recycling powder, including particle size distribution, moisture content, and chemical reactivity. This collaborative approach ensures that the conveying system is optimized for maximum efficiency and safety. Headpowder also provides comprehensive after-sales support, including training for operators, spare parts availability, and remote monitoring capabilities. For the Xiangyang project, Headpowder assigned a dedicated project manager who coordinated with the client’s team on a weekly basis. The company’s commitment to innovation is evident in its ongoing research into new materials and conveying methods, such as the use of low-pressure nitrogen for ultra-fine powders. If you are looking for a reliable solution for renewable resource conveying, especially for lithium battery recycling powder, do not hesitate to reach out to Headpowder. Contact Manager Zhang via WeChat at 15662777102 to discuss your project requirements and receive a preliminary engineering assessment. Headpowder is ready to deliver a customized nitrogen circulation pneumatic conveying case that meets your operational goals and safety standards.
This successful project in Xiangyang, Hubei Province, serves as a compelling example of how advanced pneumatic conveying technology can transform the lithium battery recycling industry. The use of nitrogen circulation not only guarantees safe handling of combustible powders but also reduces operational costs and environmental impact. The collaboration between the automotive enterprise and Shandong Headpowder Engineering Co., Ltd. has resulted in a system that is both efficient and sustainable. As the demand for electric vehicles continues to grow, the need for efficient recycling infrastructure will become even more critical. Headpowder is well-positioned to support this expansion with its proven expertise in lithium battery recycling powder conveying and renewable resource conveying. The company’s engineers are already developing next-generation systems that incorporate AI-driven predictive maintenance and adaptive flow control. For any organization involved in battery recycling, investing in a reliable nitrogen circulation pneumatic conveying system is a strategic decision that pays dividends in safety, productivity, and material recovery. To learn more about how Headpowder can assist with your specific needs, please contact Manager Zhang at WeChat 15662777102. Headpowder looks forward to becoming your trusted partner in powder handling technology.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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