Method for drying, especially waste material, such as shrimp or crayfish shell, fish offal, etc.

Abstract From the Canadian patent

Offal material such as shrimp or crab shells, fish, offal etc. is dried to produce a fine-grained base material or additive for use in foodstuffs and animal fodder by subjecting a starting material in a chamber to a turbulent air current which accelerates the material lumps into various paths of movement. Hereby the material lumps continuously collide with each other, thereby constantly exposing new surfaces or rupture. The chamber is supplied with air having a, temperature which partly depends on the temperature of the starting material and partly depends on the comminution rate in an amount adjusted according to the amount of starting material introduced per time unit. Hereby it is …