Brief Introduction
Ceramic grinding balls are key media in the field of industrial grinding, mainly used for ultrafine grinding and dispersion of powder materials. Rongsheng Factory mainly produces alumina ceramic balls and zirconia ceramic balls.
Physical And Chemical Indicators Of Alumina Ceramic Ball
Alumina ceramic balls: With alumina (AL2O₃) as the main component, they have high hardness and strong wear resistance, and are suitable for medium and low intensity grinding scenarios, such as the processing of ceramic and glass powders. Common specifications are 0.3-70mm, with an alumina content of 92% and 95%. Suitable for sand mills and ball mills for material grinding, and also used in precision instruments.
| Performance Indicator | 92 Series | 95 Series |
| Al2O3 (%) | 92 | 95 |
| Fe2O3 (%) | ≤0.02 | ≤0.02 |
| Hardness (Mohs) | 9 | 9 |
| Water Absorption (%) | ≤0.01 | ≤0.01 |
| Bulk Density (g/cm3) | ≥3.60 | ≥3.70 |
| Compressive Strength （Mpa） | ≥2000 | ≥2250 |
| Abrasion (%) | ≤0.10 | ≤0.08 |
| Color | White | White |
Physical And Chemical Indicators Of 95% Zirconia Ceramic Ball
Zirconia ceramic balls: With zirconium oxide (ZrO₂) as the base material, they have both high toughness and wear resistance, and are widely used in sand mills, ball mills and other equipment, especially suitable for ultrafine grinding of metal/non-metal powders.
| Item | Unit | 95 Zirconia Ball |
| Content | wt% | 94.6% ZrO2 |
| 5.2%Y2O3 | ||
| Packing density | Kg/L | 3.5 (Ф5mm) |
| Density | g/cm3 | 6 |
| Hardness(HV) | GPa | ≥1200 |
| Elastic modulus | GPa | 200 |
| Thermal conductivity | W/m·K | 3 |
| Coefficient Of Thermal Expansion | 10×10-6/℃ (20 to 400℃) | 9.6 |
| Crush Strength | KN | ≥120(Ф1.5mm) |
| Bending Toughness | MPam1/2 | 8 |
| Size | 0.8,1.0,1.2,1.4,2,3,5,6.5,7,8.5,10,12,15,20,25,30mm; Customized according to customer requirements. | |
Physical And Chemical Indicators Of 65% Zirconium Silicate Ball
Zirconium silicate ball is a high-performance grinding medium. Its main chemical components are zirconium dioxide (ZrO2) and silicon dioxide (SiO2), usually with a content of 65% and 35% respectively.
| Composition | ZrO2 65%; SiO2 35% |
| Real Density | 4.0g/cm3 |
| Bulk Density | 2.5g/cm3 |
| Moh’s Hardness | 8 |
| Wear Rate Per Ton | 0.03kg/h |
| Color | Milky White |