Kaolin Powder Wet Grinding Machine Ball Mill

Kaolin (china clay) is a critical mineral in industries like ceramics, paper, paints, and cosmetics—demanding ultra-fine, uniform powder (200–2000 mesh) with high whiteness and low impurities. For achieving this, the kaolin powder wet grinding machine ball mill stands out as a trusted tool: it uses a wet grinding process (mixing kaolin with water) to avoid dry grinding’s dust pollution and ensure finer, more consistent particle sizes.

What is a Kaolin Ball Mill?​

A kaolin wet grinding ball mill is a specialized rotating cylinder device engineered for wet-process grinding of kaolin ore into fine slurry (kaolin + water). Its key components are tailored to kaolin’s needs:​
● Grinding Chamber: A horizontal cylinder lined with wear-resistant materials (rubber or alumina bricks) to prevent kaolin contamination (critical for white ceramics/paper).​
● Grinding Media: Small-diameter balls (5–20mm) made of alumina, zirconia, or high-chromium steel—chosen to avoid adding impurities to kaolin.​
● Slurry System: Inlets for kaolin ore and water (typically 1:1.5–1:2 kaolin-to-water ratio) and outlets for the finished kaolin slurry.​
● Drive Unit: A low-speed motor (15–25 RPM) to ensure gentle grinding—avoiding overheating that could damage kaolin’s mineral structure.​

Key specs for industrial use:​

● Capacity: 1–50 TPH (tons of dry kaolin per hour), matching small to large processing plants.​
● Fineness: Adjustable from 200 mesh (74μm) to 2000 mesh (7μm)—suited for paper fillers (325 mesh) or ceramic glazes (1000+ mesh).​
● Material Compatibility: Designed for soft kaolin (Mohs hardness 1–2), ensuring efficient grinding without excessive media wear.

How Does It Work for Kaolin Wet Grinding?​

The process is simple yet precise, focusing on uniform particle size and impurity control:​

● Slurry Preparation: Raw kaolin ore (crushed to ≤10mm) is mixed with water in a pre-mixer to form a slurry (solid content 40–50%). This avoids dry grinding’s dust and ensures even grinding.​
● Feeding: The slurry is pumped into the ball mill’s grinding chamber, where it’s lifted by the chamber’s internal liners as the cylinder rotates.​
● Grinding: As the chamber spins, the grinding media (e.g., alumina balls) fall and roll, applying compressive and shear force to break kaolin particles into finer sizes. The low rotation speed prevents media from crushing kaolin into uneven flakes.​
● Classification & Discharge: Finished slurry (meeting target fineness) flows out through the mill’s discharge grid. Oversized particles remain in the chamber for re-grinding, ensuring uniform output.​
● Post-Processing: The slurry is sent to a filter press for dewatering (if dry powder is needed) or directly to downstream processes (e.g., ceramic slip casting, paper coating).

If you want to know more details about right ball mill for your kaolin capacity (1–50 TPH) or target fineness (200–2000 mesh), share your processing goals—we’ll recommend a customized wet grinding solution, including media selection and slurry system design. Please click on the online consultation to get solution and price now. Baichy Machinery is dedicated to serving you 24 hours a day!