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Alumina Dry Grinding Ball

Alumina Dry Grinding Ball

Alumina Dry Grinding Balls are high-density ceramic balls that are used as grinding media in various types of mills for dry grinding applications. These balls are made from high-purity alumina powder that is sintered at high temperatures to form a dense, hard, and wear-resistant ceramic material.

The high-density and hardness of alumina dry grinding balls make them ideal for use in high-energy milling applications, such as ball mills, vibratory mills, and stirred media mills. They are also suitable for use in horizontal and vertical bead mills and attrition mills.

One of the key advantages of alumina dry grinding balls is their ability to withstand high temperatures, making them ideal for use in high-temperature applications. They are also highly resistant to abrasion, which ensures longer service life and reduced downtime for maintenance and replacement.

In addition, alumina dry grinding balls have a low wear rate, which ensures consistent performance and minimal contamination of the material being ground. This is particularly important in applications where high-purity materials are required, such as in the production of advanced ceramics and electronic components.

Overall, alumina dry grinding balls are a reliable and high-performance grinding media that can be used in a wide range of dry grinding applications. Their superior mechanical properties and resistance to wear and abrasion make them a popular choice in many industrial and scientific applications.

Catalog No. CERAMICS
Size Customized
Material Al2O3
Purity 95% 99% 99.7%
Density 3.8~3.9 g/cm3


At CG Material, we offer high quality Alumina Dry Grinding Ball with exceptional purity and precision in terms of size. Our products range in diameter from 1mm to 100mm and have a purity level of up to 99.8%. We also provide custom manufacturing options for special shapes to meet specific needs.

Alumina Dry Grinding Ball Specifications

Al2O3(%) >75 >92 >95
Bulk Density (g/cm3) >3.20 >3.60 >3.65
Hardness (mohs) 7.5 9 9
Wear Loss(%) <0.015 <0.015 <0.012
Size 3-90mm (or customized)

Alumina Dry Grinding Ball Features

This is high-quality alumina grinding balls product that’s lighter than steel balls, and at the same time, much harder than them (Rockwell hardness for normal alumina balls is as high as 78). Alumina balls is a small, non-magnetic electrical insulator that easily overcomes heat (up to 1000°C), acid, alkali, corrosion, abrasion, rust, and unlubricated rolls. In addition, alumina balls keep the ball mills from harm by elevating their utilizable volume, which extends their lifespan considerably.

Alumina Dry Grinding Ball Applications

Alumina grinding balls are widely used in the grinding and processing of raw materials in industries such as white cement, minerals, ceramics, electronic materials, magnetics materials, and coatings and paints. Alumina ball is a high-quality grinding medium. In the building ceramic industry, the wear efficiency of alumina ceramic grinding balls is higher than that of natural flint and pebbles.


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


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