High Content 4MM Alumina Ceramic Balls For Lined Ball Mill Factory
Alumina grinding balls refer to materials such as bauxite, roller powder, industrial alumina powder, high temperature calcined alpha alumina powder, etc., after batching, grinding, milling (pulping, mud making), forming, drying In the process of firing, etc., it is a ball which is widely used as a grinding medium. According to different alumina content, it can be divided into medium aluminum ball, medium high aluminum ball and high aluminum ball.Generally, we classify 60%-65% alumina content as medium aluminum ball, 75%-80% alumina content as medium-high aluminum ball, and 90% or more alumina content as high-aluminum ball.
High aluminum ball has excellent characteristics such as high strength, high hardness, high wear resistance, large specific gravity, small volume, high temperature resistance, corrosion resistance and no pollution.
Item | Unit | Si3N4 | ZrO2 | SiC | Al2O3 |
Materials | - | Sintered Si3N4 | ZrO2 | Sintered SiC | 99.5%Al2O3 |
Density | g/cm3 | 3.2 | 6.0 | 3.15 | 3.95 |
Color | - | Black, Grey | White | Black | White, Ivory |
Young's | Gpa | 300-320 | 210 | 350 | 380 |
Hardness | Hv | 1400-1700 | 1100-1300 | 2000-2500 | 1800 |
Hardness | HRC | 75-80 | 70-50 | 85-90 | 80 |
Bending Strength | MPa | 800-1200 | 950-1200 | 400-500 | 300-500 |
Fracture | Mpam½ | 5.0-7.0 | 8.0-10.0 | 3.0-4.0 | 3.0-4.0 |
Max.Working Temperature | ℃ | 1000 | 700 | 1400 |
1100 |
1.For high strength and high toughness products: widely used in bearing and valve industry
2.For prevention of pollution: food, cosmetics
3.For wear and corrosion resistant products: coatings, textiles, pigments, printing and dyeing
4.For ceramics: electronic ceramics, refractory ceramics, structural ceramics