In the field of ultrafine powder processing, air flow classification is an important means to obtain narrow distribution and ultrafine particles. The design and manufacture of classifying wheel is the core technology of the classifier. The air classifier of German alpai enjoys a good reputation in the world, and is the designated equipment of some powder manufacturers which require strict particle size distribution. There are usually two kinds of classifying wheels: metal and ceramics. For some materials sensitive to magnetic pollution, ceramic classifying wheels must be used.

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Main material execution:

• silicon carbide (SiC);
• silicon nitride (Si3N4);
• aluminum oxide (Al2O3)
• Zironia(ZrO2)

Ceramics classifying wheels have excellent mechanical properties and machinability, high temperature resistance, corrosion resistance, wear resistance, high strength, anti adhesion, low density, small friction coefficient and self lubrication, etc. the ceramic classifying wheel is widely used in powder refining and grading industry.