Why do inert ceramic balls emphasize the level of aluminium content?

Whether we are doing wholesale business, purchasing or looking for suppliers or manufacturers of inert ceramic balls, we will always be informed of the level of aluminium oxide content. Then why do inert ceramic balls need to highlight this technical parameter?

Main reasons

1. Impact on physical properties: Hardness and wear resistance: The higher the aluminum content, the usually higher the hardness of inert ceramic balls. The high hardness enables the ceramic balls to better resist wear caused by friction, collision, etc. during use. In the role of grinding media or in environments with high-speed fluid scouring, the surface wear and peeling are less likely to occur, thereby extending the service life. Compressive strength: The higher aluminum content helps to enhance the compressive strength of inert ceramic balls. This makes the ceramic balls less likely to crack or deform when bearing the pressure from catalysts and materials in the reactor, as well as when bearing the weight and fluid pressure in equipment such as towers, ensuring the stable operation of the equipment.

2. Impact on chemical stability: Corrosion resistance: Aluminum elements can promote the formation of denser and more stable crystal structures in ceramic balls, enhancing their ability to resist corrosion from acidic and alkaline media. In industries such as petrochemicals and environmental protection, many reaction systems involve corrosive substances such as strong acids and strong bases. In such environments, inert ceramic balls with high aluminum content can maintain chemical stability and not be corroded, effectively protecting catalysts and equipment. Oxidation resistance: In some high-temperature aerobic environments, high aluminum content helps to improve the oxidation resistance of inert ceramic balls, making them less prone to oxidation and maintaining good performance.

3. Impact on thermal stability: High-temperature resistance: With the increase in aluminum content, the high-temperature resistance of inert ceramic balls significantly improves. They can withstand higher temperatures without softening, deforming or cracking, ensuring the stable existence of ceramic balls in high-temperature reaction processes, such as in petroleum cracking and chemical synthesis processes with high temperatures, providing reliable support and protection for catalysts. Thermal shock resistance: In the case of rapid temperature changes, inert ceramic balls with high aluminum content have better thermal shock resistance. They can withstand frequent heating and cooling processes, less likely to develop cracks or damage due to thermal stress, ensuring service life in environments with large temperature fluctuations.

4. Impact on catalytic performance: Porosity structure and specific surface area: Appropriate aluminum content is conducive to forming a uniform distribution of micropores, increasing the specific surface area of inert ceramic balls. The larger specific surface area provides more attachment points for catalyst active components, increasing the loading capacity and utilization efficiency of the catalyst, thereby promoting chemical reactions, improving reaction rate and product selectivity. Inert to reactions: Reasonable control of aluminum content ensures that ceramic balls remain in good inertness in the reaction system, not undergoing unnecessary chemical reactions with reaction raw materials, products or catalysts, ensuring that reactions proceed as expected and do not affect product quality and purity.