Case study: Low wind velocity anti-crushing conveying of lithium battery cathode powder in Wanzhou,

A new energy materials company located in Wanzhou, Chongqing, mainly engages in the production and processing of lithium battery cathode powders (such as nickel-cobalt-manganese oxide, lithium iron phosphate, etc.). During production, the company needs to transport cathode powder from the raw material silo to downstream equipment such as mixers and sintering furnaces. Due to the high brittleness of cathode powder particles and strict requirements for particle integrity, pollution prevention, and efficiency during conveying, enterprises urgently need a stable and reliable low-velocity anti-crushing pneumatic conveying system to address existing pain points.

Customer pain points

The company's original pneumatic conveying system used a high-velocity positive pressure dilute phase conveying method, which had the following core pain points:
1. Severe material breakage: High wind speed causes violent collisions between cathode powder particles and between particles and the tube wall, producing a large amount of fine powder that affects subsequent battery performance.
2. High system energy consumption: To maintain high wind speeds, fan power remains high, significantly increasing operating costs.
3. Pipeline wear and blockage: High-speed airflow accelerates wear on the inner wall of the pipeline, and fine powder tends to clump and block at elbows, requiring frequent shutdown and cleaning.
4. Dust Flying and Cross-contamination: Insufficient sealing in open conveying stages, cathode powder is prone to leakage, causing workshop environmental issues and cross-contamination risks between different batches.

Product advantages

To address customer pain points, Head Powder offers a customized low-wind velocity dense phase pneumatic conveying solution. The design core of this solution is "low air velocity, high concentration, and anti-breakage":
1. Low Air Velocity Conveying: By optimizing the pipe diameter and adopting fluidized transmission tank technology, the wind speed is controlled near the critical fluidization speed (usually 3~8 m/s), reducing particle collision energy and lowering the cathode powder crushing rate by over 90%.
2. Dense phase conveying: Materials flow inside pipelines in plug-type or continuous dense phase forms, with gas concentrations as high as 30~60 kg/kg, reducing gas consumption and reducing system energy consumption by 40% compared to traditional dilute phases.
3. Wear-resistant and anti-clogging design: The inner wall of the pipeline uses ceramic lining or wear-resistant coating, with anti-wear structures at elbows. Combined with intelligent purge and air knife, it effectively prevents pipe blockages.
4. Fully enclosed clean system: A fully sealed design from the sending tank to the receiving silo, combined with negative or positive pressure sealed circuits to prevent dust leakage, meeting the lithium battery industry's stringent requirements for cleanliness and cross-contamination prevention.

Head Powder, relying on its localized service team in Wanzhou, Chongqing and years of pneumatic conveying experience, has helped the company deliver stable, energy-saving, and high-quality lithium battery cathode powder, earning high customer recognition.