The Challenge: Sedimentation Bottlenecks in Battery pCAM Production
In 2016, a leading Chinese tungsten company (Shanghai-listed, SHA: 600549) faced dual challenges in its battery pCAM (precursor cathode active material) production line.
- Primitive sedimentation equipment constrained both product quality—producing irregular particle morphology and inconsistent PSD—and production capacity.
- Existing technology could not meet growing demands for high-performance lithium-ion battery materials, particularly NCM811-grade pCAM.
The Solution: Pioneering Automated Concentrator
Dongou developed a first-of-its-kind automated concentrator for battery pCAM slurry processing, featuring:
- Self-regenerating filter array with grouped backflush — ensures continuous production without manual intervention
- Integrated PLC control — pressure-flow-stirring interlock for stable, repeatable operation
- Pioneering field test — Dongou deployed its first industrial prototype pro bono, validating performance under real production conditions
- Patent-protected innovation — proprietary technology designed specifically for pCAM filtration and concentration
Measurable Results: Higher Throughput, Tighter PSD
The pilot deployment delivered immediate and quantifiable improvements:
- more than 20% production throughput
- 15% tighter particle distribution (D90data)
- Optimized morphology uniformity meeting NCM811 standards
Industry-Wide Adoption: From Single Pilot to Market Standard
Following the successful pilot, the technology gained rapid industry acceptance:
- Adopted by 98% of China’s precursor producers
- Implemented in 5+ countries’ battery supply chains
- Enabled industry-wide 20-30% efficiency gains
Today, the Dongou Concentrator is recognized as a National First Major Technical Equipment and continues to set the standard for battery pCAM filtration and concentration in the Chinese market.