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Product classification

Alumina Grinding Ball

Alumina Ceramic Ball

Activated alumina balls are small, spherical beads made of a highly porous form of aluminum oxide (Al₂O₃). They are "activated" through a process of thermal dehydration, which removes water and creates an incredibly large surface area within a network of microscopic pores.

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Product Description

Ultra-Low Wear Grinding Media

Alumina Grinding Ball / High-Density Ceramic Media

Name: Alumina Grinding Ball
SKU: 0

High-Density Wear-Resistant Ceramic Balls for Ball Mills & Ultrafine Grinding

Isostatic Pressing | High Sphericity | Smooth Surface Finish

Key Advantages

✔ Ultra-Low Wear Rate: Significantly reduces grinding cost and prevents raw material contamination.
✔ High Density & Hardness: High grinding efficiency; dramatically reduces milling process time.
✔ Chemical Inertness: Resistant to strong acids, alkalis, and high temperatures up to 1500°C.

Technical Data Sheet (TDS)

Property	92% Series	95% Series
Al₂O₃ Content (%)	≥ 92.0%	≥ 95.0%
Bulk Density (g/cm³)	≥ 3.60	≥ 3.68
Mohs Hardness	9.0	9.0
Water Absorption (%)	≤ 0.01%	≤ 0.01%
Self-Wear Rate (%/h)	≤ 0.015%	≤ 0.008%
Color	White	White

Available Sizes (Diameter)

ø 0.5 - 3 mm (Micro Beads) ø 10 mm ø 15 mm ø 20 mm ø 30 mm ø 40 mm ø 50 mm ø 60 mm

Custom Ball Ratio Optimization for Ball Mills

Applications & Industries

Ceramics & Glaze

Ultrafine grinding of ceramic raw materials, body clays, and high-gloss glazes.

Paints & Coatings

Dispersing and milling of high-grade pigments, printing inks, and electronic pastes.

Non-Metallic Minerals

Deep processing of quartz, zircon sand, GCC, and kaolin in sand/ball mills.

Request Wear-Resistance Testing & Mill Loading Calculation

Free ball ratio optimization advice and custom packaging available.

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