Anhui Wuhu Lithium Battery PVDF Powder Conveying System Case

In the rapidly evolving lithium battery industry, the efficient and safe handling of specialty powders such as PVDF (polyvinylidene fluoride) is critical to maintaining production quality and operational safety. headpowder recently completed a PVDF powder conveying system for a leading battery manufacturer located in Wuhu, Anhui Province. This article examines the project's background, the specific challenges faced by the client, and the tailored solution delivered by headpowder.

Case Overview

A major lithium battery producer in Wuhu required a reliable, automated system to convey PVDF powder from bulk storage to multiple dosing points within their production facility. The client operates in a high-volume environment where consistency and cleanliness are paramount.

Client Challenges

The client encountered several operational difficulties with their previous manual handling method:

• Powder bridging and clogging: PVDF powder is hygroscopic and tends to form agglomerates, causing frequent blockages in traditional conveying lines.
• Inconsistent dosing accuracy: Manual weighing and transfer led to batch-to-batch variations, affecting final battery electrode quality.
• Dust and contamination risks: Open handling generated airborne fine particles, posing health hazards and risking cross-contamination.
• High maintenance downtime: Existing equipment required frequent cleaning and part replacement, reducing overall equipment effectiveness.

Solution & Advantages

headpowder designed and installed a dense-phase pneumatic conveying system specifically engineered for PVDF powder. Key aspects of the solution include:

• Closed-loop conveying: A fully sealed pipeline network eliminates dust emission and protects the powder from moisture absorption.
• Advanced flow control: Integrated load cells and variable-speed feeders ensure continuous, precise dosing within ±1% tolerance.
• Anti-clog design: Specially coated pipe interiors and air pulse jets prevent powder adhesion and bridging.
• Low-shear handling: Gentle conveying velocity preserves the particulate structure of PVDF, maintaining its functional properties.

As a result, the client achieved a 30% increase in line uptime, eliminated manual handling labor, and reduced material waste by over 15%. The system has been operating reliably for more than 12 months with minimal maintenance interventions.