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Alumina grinding ball has been widely used in ball mills as abrasive media for ceramic raw materals and glaze materials in ceramic factors, cement factories, enamel factories and glasswork owing to the extraordinarily high density, high hardness, high wear resistance.During the abrasive/grinding processes, ceramic aballs will not be broken, it will not comtaminate the materials to be grinded.
Type: 65 Alumina ball, 75 Alumina ball, 90 Alumina ball, 92 Alumina ball, 95 Alumina ball, 99 Alumina ball etc
XINGFENG Grinding Balls are suitable for grinding medium used in ball grinding machines.
Alumina grinding ball has been widely used in ball mills as abrasive media for ceramic raw materals and glaze materials in ceramic factors, cement factories, enamel factories and glasswork owing to the extraordinarily high density, high hardness, high wear resistance.During the abrasive/grinding processes, ceramic aballs will not be broken, it will not comtaminate the materials to be grinded.
Typical Characteristics
Specification
65Alumina Ball
75Alumina Ball
90Alumina Ball
92Alumina Ball
95Alumina Ball
99Alumina Ball
Al2O3(%)
≥65
≥75
≥90
≥92
≥95
≥99
Fe2O3(%)
≤0.5
≤0.5
≤0.1
≤0.1
≤0.1
≤0.1
Moh’s Hardness
8
8~9
9
9
9
9
Water Adsorption (%)
≤0.05
≤0.05
≤0.02
≤0.02
≤0.02
≤0.01
Density (g/cm3)
≥2.95
≥3.25
≥3.55
≥3.60
≥3.65
≥3.8
Crush Strength (MPa)
≥1650
≥1700
≥1900
≥2000
≥2250
≥2500
Abrasion Loss (%)
≤0.03
≤0.02
≤0.01
≤0.01
≤0.01
≤0.01
Appearance Demand
High Alumina Grinding Balls
Medium Alumina Grinding Balls
Carbonized Alumina Grinding Balls
Color
White
White
Ash-black
Crack
Not Permission
Not Permission
Not Permission
Impurity
Not Permission
Not Permission
Not Permission
Foam hole
Above ф1mm not permission, size in ф0.5mm permit 3 balls
Flaw
Max. size in ф0.3mm permit 3 balls
Advantage
(1) High wear-resistance:
The alumina balls’ wear-resistance is higher than the common alumina balls’. When it is working, the ball won’t pollute the grinding materials, so it can keep the purity and improve the stability of grinded materials especially the ceramic glaze.
(2) High density
High density, high hardness and the high grinding characters save the grinding time, enlarge the smashing room. So it can improve the grinding efficiency.