92% 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 65-70 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:

Items Proportion Items Proportion
Al2O3 ≥92% SiO2 3.81%
Fe2O3 0.06% MgO 0.80%
CaO 1.09% TiO2 0.02%
K2O 0.08% Na2O 0.56%
Spec.(mm) Volume(cm3) Weight(g/pc)
Φ30 14 ± 1.5 43 ± 2
Φ40 25 ± 1.5 126 ± 2
Φ50 39 ± 2 242 ± 2
Φ60 58 ± 2 407 ± 2

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