Water absorption of alumina ball

The adsorption performance of alumina microspheres is mainly to verify the quality of kaolin and the internal structure of alumina ceramic microspheres. In other words, the adsorption performance of alumina balls directly affects the quality of ceramic balls.

   

The water absorption of alumina ball is standard. The water absorption of medium aluminum ceramic ball is generally less than 0.5%, and that of high aluminum ceramic ball is generally more than 10%. The water absorption of high alumina ceramic ball is generally calculated according to the percentage of product weight after adding water. It can directly reflect the density of products and affect the quality of products.

The selection standard of domestic alumina ball adsorbent is the industry standard, and the detection method of water absorption is basically the same. Add 100g alumina ball into a beaker of 300ml water. The activated alumina ball is still waiting for complete absorption of water. After two hours, the alumina ball was separated from the water. Weigh the water loss of beaker and the total weight of activated alumina ball, and calculate the water absorption.

Generally speaking, the lower the water absorption, the better the quality of alumina ball. This is because the lower the water absorption, the higher the embryo density, the stronger the relative performance and the higher the hardness. The water absorption of various wear-resistant ceramic balls containing alumina will be damaged: if the water absorption is reduced, the water absorption of alumina balls will be reduced. Adsorption is divided into ordinary ceramic ball with water absorption ≤ 0.5%, medium aluminum ball with water absorption ≥ 0.5%, high aluminum ball with water absorption ≥ 3%, and high-performance alumina ball with water absorption ≥ 6%. Or equal to 10%, such as activated alumina ball.