Grinding and sizing

Ceramic components are integrated as wear protection at the critical points of the processes

Powder technology consists mainly of the following factors; grinding, mixing, preparation, and transport. Each of these process steps, depending on the material to be ground and the energy input, is accompanied by more or less pronounced abrasive wear of the equipment. Ceramic components are integrated as wear protection at the critical points of the processes. At the same time, contamination of the ground material is prevented. This is effective for both classic sliding wear and the more critical impact wear. 

Typical applications:

• Dust collectors/cyclones are effectively protected against abrasion by lining them with ceramics at problem zones, thus significantly extending service life.
• Mills are lined with plates, mosaics or molded parts. Aluminium oxide is the material of choice here because of its good wear resistance. Depending on the grinding process, the hardness of the material can also contribute positively to the grinding effect of the mill. 
• Rotary valves seal the grinding chamber from the environment, but allow the material to flow through. Good dimensional stability is required here. 
• Grinding media can be designed as loose grinding balls or as fixed grinding discs. The decisive factor is a high wear resistance, which increases the service life of the grinding media and prevents contamination of the material to be ground. Another aspect is a high grinding effect with low energy input. 
• Classifiers are aggregates for classifying the powder. The high kinetic energy input required in this process stresses the components by causing severe abrasion. This effect can be controlled by using ceramic materials