On studying different types of pelletizing system for fish feed

Abstract

Feeding pellets is advantageous to both aquatic animal and its cultivators which distribute the required nutrients to fishes. The form of pellet feed includes proper provision of nutrient to the animals and minimizes the feed wastage. Pelletizer is a mechanical device operated via manually or electrically, which is used to create a pellet by the process of compression as well as molding. The machine operations are: grinding, mixing and extrusion. The differing characteristics are subjected to the pelleting flow processes of heat, moisture, and pressure of feed ingredients. This study addresses the different type of pelletizers. Here, we discuss the revolving type and screw type pelletizers that have potential to produce feeds in the field of fisheries, poultries and so on. The energy transmission of the pelletizer depends on pelleting efficiency, percentage recovery and throughout capacity of the machine. The size of the pellets is based on the cross section of the various types of dies that are discussed.