Preconditioning for extrusion of aquafeed – Part 1

What is preconditioning and its benefits? This article, the first in a 2 part, explains. Preconditioning is a unit operation that has long been associated with extrusion processing (and with other feed processing methods such as pellet milling). Although a seemingly simple process, there are many design variants available. There are also a number of operational parameters that need to be given careful consideration when selecting and/or designing a process application. The following seeks to pr