In this paper,the effects of the process flow of treating waste magnesite brick and the influence of equipment parameters on the recovery rate of the alloy are introduced and analysed.

The complete and mealy feed of the pet was extruded and pelletized by the dry-way extrusion with double-screw extruder, to research into the relationship between the bulk weight and the gelatinization of starch, the bulk weight and the hardness of the pelleted feed, and the same time to study the effects of the equipment parameter and the formula feature for the bulk weight of the pelleted feed.

To prove that the establishing plant parameter database is important to device condition monitor and fault diagnosis,through an example of fault diagnosis which has not completed.