92% Alumina Ceramic Grinding Ball – Key Features

Material Composition
- 92% Al₂O₃ (Alumina) + additives (e.g., SiO₂, MgO) for enhanced strength and wear resistance.
- High purity ensures chemical inertness and corrosion resistance.
Properties
- High Hardness (Mohs hardness ~9) – Superior to steel balls in wear resistance.
- Low Abrasion Loss – Extends service life in grinding applications.
- High Density (~3.6 g/cm³) – Improves grinding efficiency.
- Thermal Stability – Withstands temperatures up to 1,600°C.
- Acid/Alkali Resistance – Ideal for harsh chemical environments.
Applications
- Ball Mills (for cement, minerals, ceramics, paints).
- Grinding & Dispersion (e.g., pigments, electronic materials).
- Wet/Dry Processing – Non-contaminating for food/pharma industries.
Advantages Over Steel Balls
- No rust or metal contamination.
- Lower energy consumption (due to reduced weight vs. steel).
- Longer lifespan (2–5x longer than steel in abrasive conditions).
Common Sizes
- Diameter: 1mm–90mm (standard sizes: 5mm, 10mm, 20mm, 30mm, etc.).
Standards
- Meets ISO 9001, ASTM, or industry-specific certifications.

Product	Al2O3 %	Bulk density g/cm2	Water absorption		Mohs hardness scale	Abrasion loss %	Color
High alumina grinding balls	92	3.65	0.01		9	0.011	White
Medium alumina grinding balls	65-70	2.93	0.01		8	0.01	Yellow-White
Appearance demand
	High alumina grinding balls			Medium alumina grinding balls
Crack	Not permission			Not permission
Impurity	Not permission			Not permission
Foam hole	Above 1mm not permission, size in 0.5mm permit 3 balls.
Flaw	Max. size in 0.3mm permit 3 balls.
Advantage	a) High alumina content
	b) High density
	c) High hardness
	d) High wearing feature
Warranty	a) By national standard HG/T 3683.1-2000
	b) Offer lifetime consultation on problems occurred

Typical chemical compositions:

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