Against the booming demand of ternary lithium batteries and cobalt-based functional materials, the pretreatment of cobalt tetroxide powder has long been plagued by low granulation efficiency and unstable particle size. Traditional granulation lines often produce widely scattered particles requiring repeated screening, while long processing cycles restrict overall production throughput. Recently, relying on long-term R&D of new energy powder processing equipment, AKW has completed field verification on cobalt tetroxide granulation process with ideal test results.

Raw cobalt tetroxide ultrafine powder was adopted during the validation test. Under standard operating parameters, the machine steadily forms dense 1–2mm granules. The whole mixing and granulation process finishes within 6 minutes for each batch. Produced granules feature good sphericity and concentrated particle distribution, significantly improving powder flowability and mitigating segregation and dust generation in subsequent sintering procedures.

The AKW powder granulator adopts integrated 3D counter-current intensive mixing & granulation technology. Mixing and granulation are finished inside one chamber without material transfer. Considering the high hardness and oxidation risk of cobalt tetroxide, wear-resistant and anti-corrosion lining and mixing tools are equipped to minimize foreign metal contamination. The fully sealed structure reduces powder loss and meets strict cleanliness standards of lithium battery material production.

Conventional segmented granulation systems usually take 12–20 minutes per batch due to separated feeding, mixing, granulating and discharging steps. The integrated AKW solution shortens cycle time to 6 minutes. Under equal output capacity, manufacturers can save workshop space and cut investment on auxiliary conveying equipment. Target particle size is adjustable online, clients can tune the granular range within 1–2mm according to pressing and sintering requirements.

Models cover laboratory R&D, pilot lines and large-scale mass production plants. After parameter calibration, the machine is also compatible with cobalt oxide, NCM precursors and multiple metal oxide wet granulation. AKW supplies customized process packages including on-site commissioning, parameter optimization and operator training based on production capacity, powder moisture and binder formulas.

An engineer from AKW Technology Center commented: Cobalt cathode materials demand higher consistency of powder granules. Many manufacturers pursue stable particle size together with shorter cycle time. After dozens of powder tests to optimize rotor speed, chamber inclination and liquid spraying sequence, we successfully realize qualified 1–2mm cobalt tetroxide granules within 6 minutes. The technology has been trialed stably at multiple new energy material factories.

Key Features

• Target particle size: Stable 1–2mm cobalt tetroxide granules, narrow size distribution
• High efficiency: Full batch cycle completed in 6 minutes
• One-chamber integrated process: Avoid contamination caused by material transfer
• Material oriented design: Optimized for cobalt tetroxide and cobalt-based oxide powder
• Adjustable parameters: Flexible tuning of particle size, rotation speed and liquid feeding
• Clean production: Closed structure with anti-abrasion lining to reduce impurity pollution

FAQ

Q1: Why control cobalt tetroxide granule size at 1–2mm?

A: 1–2mm granules balance flowability and air permeability during sintering, prevent fine powder agglomeration and improve uniformity inside sintering kilns.

Q2: Does the 6-minute cycle include discharging?

A: 6 minutes refers to the full mixing and granulation period after feeding, excluding manual discharging. Automatic discharging system can further shorten circulation time.

Q3: Can this granulator run continuously for cobalt tetroxide mass production?

A: The anti-wear chamber structure is optimized for abrasive cobalt oxide powder, supporting continuous operation. It can connect with vacuum feeding and auto discharging for fully automatic production lines.

Q4: What other lithium battery powders can be processed?

A: Suitable for cobalt oxide, NCM precursors, manganese oxides and other metal oxide powders. Process parameters can be adjusted for different raw materials.

Conclusion

Competition among upstream new energy material manufacturers focuses on refined processing besides production capacity. AKW keeps developing specialized mixing and granulating equipment for cobalt, nickel and manganese cathode precursors. The successful application of 6-minute rapid granulation for 1–2mm cobalt tetroxide offers a practical way to optimize production rhythm and stabilize granule quality, delivering advanced equipment options for intelligent cobalt-based material production lines. Contact AKW for sample testing and process proposal.