Actual technology for the preparation of raw materials for the fabrication of tiles is based on wet technology. The different elements are inefficiently ground together in Mills by wet way because too much energy is used uselessly in grinding elements of different grindability. Afterwards they are granulated in an atomizer, equipment which uses big quantities of energy to generate hot gas. Besides it generates large quantities of carbon dioxide, responsible of the green house effect and subject to the regulation by the Kyoto protocol.
It is a process with a high energy cost.
To replace this process, ANIVI proposes two ways:
- Semidry way, where materials are ground separately, optimizing operation, being stored in silos and passing to a mixer by wet way to proceed to the paste preparation which is fed to the atomizer. In this process grinding is optimized.
- Dry way, being the same as above but instead of adding water, it is directly granulated in a equipment with much less water. If necessary, grains can be dried in a small rotary dryer prior to the press.