The Grinding Ceramic Ball, primarily composed of high-purity alpha-alumina, is an advanced grinding and milling medium designed for various industrial ball mills. Manufactured through advanced isostatic pressing or rolling processes and sintered at ultra-high temperatures, these high-density alumina balls deliver exceptional kinetic energy during the milling process. They drastically improve grinding efficiency while ensuring that the processed materials remain completely uncontaminated, preserving their original purity and color.
Product Highlights
Superior Wear Resistance: Features an incredibly low wear loss rate, significantly extending the service life of the grinding media and reducing long-term operational and replacement costs.
High Density & Hardness: With a Mohs hardness of 9, the high specific gravity delivers maximum impact and crushing force, dramatically improving ball mill grinding efficiency and reducing processing time.
Zero Material Contamination: Highly pure alumina composition ensures that no undesirable colors, impurities, or metallic particles are introduced into the milled materials, which is essential for high-grade ceramics, glass, and white cement.
Excellent Chemical Stability: Highly resistant to corrosion from strong acids and alkalis, allowing for both wet and dry grinding operations in harsh chemical environments without degradation.
Perfectly Spheroidized Shape: The smooth, perfectly round surface minimizes internal friction and prevents damage or excessive wear to the inner lining of the milling equipment.
Typical Applications
Grinding media for continuous and batch ball mills in the advanced ceramic, tile, and sanitary ware industries. Milling and dispersion of high-purity materials in the paint, coating, pigment, and ink industries. Ultra-fine grinding in the white cement, chemical, pharmaceutical, and mining mineral processing sectors.
Technical Specifications
| Property |
92% Alumina Ball |
95% Alumina Ball |
99% Alumina Ball |
| Al2O3 Content (%) |
>= 92 |
>= 95 |
>= 99 |
| Density (g/cm³) |
>= 3.60 |
>= 3.65 |
>= 3.90 |
| Hardness (Mohs) |
9 |
9 |
9 |
| Wear Loss (%) |
<= 0.015 |
<= 0.010 |
<= 0.008 |
| Water Absorption (%) |
<= 0.01 |
<= 0.01 |
<= 0.01 |
| Compressive Strength (MPa) |
>= 2000 |
>= 2200 |
>= 2500 |
| Available Sizes (mm) |
10, 20, 30, 40, 50, 60, 70 |
0.5 - 60 |
0.5 - 30 |
Product Overview & Scenarios
Frequently Asked Questions
What are grinding ceramic balls mainly used for?
They are primarily used as grinding media in ball mills for ultra-fine processing and dispersion across ceramics, white cement, mineral processing, coatings, pigments, and chemical industries.
How do alumina ceramic balls compare to traditional steel grinding balls?
Unlike steel balls, alumina ceramic balls prevent iron contamination, feature excellent acid and alkali corrosion resistance, offer lower wear rates, and preserve the original purity and color of the processed material.
What alumina purity grades are available?
Standard grades include 92%, 95%, and 99% Al2O3 contents, designed to meet different crushing intensity, purity requirements, and budget specifications.
Can these ceramic balls be used in both wet and dry milling?
Yes, their superior chemical stability, low water absorption (≤ 0.01%), and exceptional mechanical strength make them fully suitable for both dry and wet milling applications.
How does high specific density affect grinding performance?
Higher specific gravity (ranging from 3.60 to 3.90 g/cm³) provides greater kinetic impact energy, significantly speeding up particle breakdown and shortening grinding cycle times.
