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.


92% Alumina Grinding Balls


Key Features of 92% Alumina Grinding Balls

  1. High Hardness:

    • 92% alumina balls have a Mohs hardness of 9, making them suitable for grinding extremely hard materials.

  2. Exceptional Wear Resistance:

    • Excellent wear resistance ensures long service life and minimal contamination of the ground material.

  3. Chemical Stability:

    • Resistant to acids, alkalis, and solvents, making them suitable for a wide range of applications.

  4. High Density:

    • Density of approximately 3.6-3.8 g/cm³ provides efficient grinding and impact force.

  5. Smooth Surface:

    • The smooth surface minimizes friction and wear during grinding.

  6. High Purity:

    • 92% alumina content ensures minimal contamination and high performance in demanding applications.


Applications of 92% Alumina Grinding Balls


  1. Ceramics Industry:

    • Used for grinding raw materials like feldspar, quartz, and clay in ceramic production.

  2. Minerals Processing:

    • Applied in the grinding of ores and minerals to achieve fine particle sizes.

  3. Paints and Coatings:

    • Used in ball mills for grinding and dispersing pigments and fillers.

  4. Cement Industry:

    • Used for grinding clinker and other raw materials in cement production.

  5. Chemical Industry:

    • Ideal for grinding and mixing chemicals and catalysts.

  6. Pharmaceuticals:

    • Used for fine grinding and homogenization of active pharmaceutical ingredients (APIs).


Advantages of 92% Alumina Balls

  • High Grinding Efficiency:

    • Provides excellent grinding and dispersion due to its high density and hardness.

  • Long Service Life:

    • Resistant to wear, reducing the frequency of media replacement.

  • Minimal Contamination:

    • High chemical stability ensures minimal contamination of the ground material.

  • Versatility:

    • Suitable for a wide range of applications and materials.

  • Cost-Effective:

    • Offers a balance between performance and cost, making it a popular choice for many industries.


Comparison with Other Grinding Media


Property92% Alumina Balls80% Alumina BallsYSZ Grinding Media
Material92% Aluminum Oxide (Al₂O₃)80% Aluminum Oxide (Al₂O₃)Yttria-Stabilized Zirconia (YSZ)
Hardness9 (Mohs)8-9 (Mohs)9 (Mohs)
Density3.6-3.8 g/cm³3.4-3.5 g/cm³6.0 g/cm³
Wear ResistanceExcellentExcellentExcellent
CostModerate to highModerateHigh
ApplicationsHigh-performance grindingGeneral-purpose grindingHigh-performance grinding and dispersion


Technical Specification of Grinding Ball

ProductAl2O3 %Bulk density g/cm2Water absorptionMohs hardness scaleAbrasion loss %Color
High alumina grinding balls923.650.0190.011White
Medium alumina grinding balls65-702.930.0180.01Yellow-White
Appearance demand

High alumina grinding ballsMedium alumina grinding balls
CrackNot permissionNot permission
ImpurityNot permissionNot permission
Foam holeAbove 1mm not permission, size in 0.5mm permit 3 balls.
FlawMax. size in 0.3mm permit 3 balls.
Advantagea) High alumina content
b) High density
c) High hardness
d) High wearing feature
Warrantya) By national standard HG/T 3683.1-2000
b) Offer lifetime consultation on problems occurred


Typical chemical compositions:

ItemsProportionItemsProportion
Al2O3≥92%SiO23.81%
Fe2O30.06%MgO0.80%
CaO1.09%TiO20.02%
K2O0.08%Na2O0.56%
Spec.(mm)Volume(cm3)Weight(g/pc)
Φ3014 ± 1.543 ± 2
Φ4025 ± 1.5126 ± 2
Φ5039 ± 2242 ± 2
Φ6058 ± 2407 ± 2


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