Common specifications and technical parameters of alumina ceramic balls
2025-06-05 14:56:54
Alumina ceramic balls, as an inorganic non-metallic material with excellent performance, are widely used in petroleum, chemical, environmental protection, electronics, metallurgy and other industries, mainly used in catalyst carriers, grinding media and tower fillers. This article will introduce the common technical indicators of alumina ceramic balls in detail from the perspectives of specifications, technical parameters, classification standards, etc., to help users be more professional and accurate when selecting and purchasing.
1. Basic definition of alumina ceramic balls
Alumina ceramic balls (Alumina Ceramic Ball) are spherical ceramic materials made of high-purity alumina (Al?O?) as the main raw material and sintered at high temperature. According to different uses, they can be divided into inert ceramic balls, high-aluminum grinding balls and active catalytic ceramic balls.
2. Common specifications and sizes
Alumina ceramic balls have various sizes and specifications depending on the application field. The common diameters are as follows:
Common specifications (diameter) Applicable scenarios
1mm - 5mm Electronic ceramics, fine grinding
6mm - 13mm Precision grinding, filter filler
20mm - 30mm Catalyst carrier, adsorption tower
40mm - 60mm Tower filler, buffer layer in the petrochemical industry
Special-shaped balls (hollow, perforated balls, etc.) and special diameters (such as 75mm, 80mm, etc.) can be customized according to customer needs.
3. Main technical parameters
Different types of alumina ceramic balls have slightly different key performance indicators, but the following core parameters should usually be paid attention to:
1. Alumina content (Al?O? content)
Medium aluminum ceramic balls: content is about 65%~75%
High aluminum ceramic balls: content ≥ 90%
High purity ceramic balls: content can reach more than 99% (such as grinding balls)
The higher the alumina content, the better its wear resistance, corrosion resistance and compressive strength.
2. Bulk density
Common range: 2.3 - 3.6 g/cm³
High-density balls are more impact-resistant and compressive-resistant, and are suitable for heavy-duty industrial tower beds.
3. Water absorption
Usually ≤ 0.5%
The lower the water absorption, the denser the ceramic ball structure and the better the chemical stability.
4. Crushing Strength
Small ball (less than 10mm): usually ≥ 1KN
Large ball (≥25mm): can reach ≥ 10KN, or even higher
Compressive strength directly determines its service life under high load conditions.
5. Heat resistance and working temperature
The operating temperature range is wide, and it can generally withstand high temperatures up to about 1400℃
Strong thermal shock stability, suitable for frequent temperature change conditions
6. Chemical stability
It can withstand corrosion from a variety of acid and alkali solutions, and is particularly suitable for use in strong acid and alkali environments
The pH adaptability range is wide, and it generally remains stable between 1 and 14
IV. Common standard classification
In industrial applications, alumina ceramic balls can also be divided into the following categories according to different standards or characteristics:
Classification method Main types
According to alumina content Medium aluminum balls, high aluminum balls, high purity ceramic balls
According to application functions Inert ceramic balls, grinding ceramic balls, filler balls
According to sintering methods Ordinary sintered balls, active ceramic balls
According to structural morphology Solid balls, hollow balls, perforated balls
V. Conclusion
When selecting alumina ceramic balls, not only should the size specifications and alumina content be determined according to the use environment and process requirements, but also technical parameters such as density, temperature resistance, and compressive strength should be comprehensively considered. High-quality ceramic balls can not only extend the service life of equipment, but also improve system efficiency and reduce maintenance costs.
If you need to customize special specifications or learn more about product parameters, please contact professional ceramic ball manufacturers to obtain samples and technical support.