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Everything You Need to Know About Alumina Grinding Balls
1. What Are Alumina Grinding Balls Made Of? Alumina grinding balls are ceramic spheres used …
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80% Alumina Ball for Ball Mill High Alumina Ceramic Grinding Ball
Alumina grinding ceramic balls Description
Alumina ceramic balls use bauxite, roller powder, industrial alumina powder, high-temperature calcined alumina powder and other materials as raw materials, through batching, grinding, powdering (pulping, mud making), molding, drying, firing, etc. Possessed with high density, high hardness, low wear, good seismic stability and good corrosion resistance, the products are the most ideal medium for grinding glaze, blank and mineral powder processing, and are used as the grinding medium of ball mill in ceramics, cement, paint, refractory, inorganic mineral powder and other industries.
Technical Specification of Grinding Ball
| 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 | 65-80 | 2.93~3.3 | 0.01 | 8 | 0.012 | 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:
| Items | Proportion | Items | Proportion | ||||
| Al2O3 | ≥80% | SiO2 | 16.81% | ||||
| Fe2O3 | 0.06% | MgO | 0.80% | ||||
| CaO | 1.09% | TiO2 | 0.02% | ||||
| K2O | 0.08% | Na2O | 0.56% |
