Specialized Airflow Pulverizer Classifier for Sodium Ion Cathode Materials

Specialized Airflow Crusher and Classifier for Sodium-Ion Cathode Materials

In the cathode materials of sodium-ion batteries (Na-ion Batteries), layered oxides represent a significant category. Their structure is similar to that of layered oxides in lithium batteries (such as LiCoO₂), but their composition is adjusted to accommodate the transport characteristics of sodium ions. Layered oxides in sodium-ion battery cathode materials often require ultrafine grinding and precise classification to enhance their electrochemical performance (e.g., tap density, particle morphology consistency). Below is key information about specialized airflow crusher classifiers suitable for layered oxides in sodium-ion battery cathodes:

1. Equipment Type

Fluidized Bed Airflow Crusher Classifier: Utilizes supersonic airflow impact crushing, with built-in or external classification systems, suitable for fine grinding of brittle materials (such as oxides).

2. Core Features

Feature Description

Grinding Fineness: Adjustable from 0.5-100 μm, suitable for cathode materials with varying particle size requirements.

Classification Precision : Turbine classification technology ensures a narrow particle size distribution (controllable D90).

Particle Shaping : Optimizes the morphology of layered oxide particles (e.g., spheroidization) to enhance battery performance.

Inert Gas Protection : Prevents oxidation of Na⁺ active materials, suitable for air-sensitive materials.

Low Contamination/Low Loss : Ceramic lining reduces metal contamination, with finished product purity ≥99.5%.

Automated Control : Frequency conversion speed regulation, one-key start/stop, and support for remote monitoring.

3. Typical Application Cases

Material Types:

Cathode Materials: Ultrafine grinding and classification of layered oxides such as NaFeO₂, NaNi₁/₃Mn₁/₃Fe₁/₃O₂, etc.

Other Sodium Battery Materials: Sodium iron phosphate (NaFePO₄), Prussian blue analogs, etc.

Industry Applications:

Sodium-ion battery cathode material production lines.

Laboratory small-scale/pilot-scale ultrafine powder preparation.

4. Selection Recommendations

Requires particle shaping functionality (to improve tap density).

The fineness adjustment range must match material requirements (e.g., sodium battery cathodes typically require D50=5-20 μm).

Low-wear design (ceramic/wear-resistant lining) to ensure material purity.