There are many names for alumina chemical filling balls. According to its application, we can call it filler balls or support balls. According to its chemical properties, it can be called inert ceramic balls. According to its chemical composition, it can be called alumina ceramic balls. All the inert alumina balls have good strength, high hardness, good wear resistance, good heat resistance, and resistance to reaction. The inert alumina ball is made of alumina powder as the main raw material, and is shaped after high temperature firing.

Inert alumina ceramic ball (catalyst proppant filler) is made of alumina powder with extremely low silicon content, and is a filler widely used as a catalyst carrier in the world. Because of its high purity, high strength, excellent stability, reliability, high mechanical strength and thermal shock resistance, this makes them an ideal choice to support all types of catalysts. Inert alumina balls are widely used in petroleum, chemical, fertilizer, natural gas and environmental protection industries as the covering support material and tower packing of the catalyst in the reactor. It has the characteristics of high temperature and pressure resistance, low water absorption and stable chemical properties. It can withstand the corrosion of acids, alkali and other organic solvents, and can withstand temperature changes during the production process. Its main function is to increase the gas or liquid distribution points, support and protect the active catalyst with low strength.

In addition, the technical indicators of the chemical composition of these inert alumina balls are:

　　1, water absorption rate ≤5%

　　2, alkali resistance ≥80~95%

　　3, heat-resistant temperature ≥1300~1700

The inert alumina chemical filling ball acts as catalyst covering, proppant, and protective agent in chemical process equipment. The inert alumina ball itself usually has no other changes. It is the chemical composition of the product itself that prevents its deposition. In the catalyst bed, the catalyst is blocked, burnt, and even poisons the catalyst.