Characteristic analysis of aquatic feed extrusion machine

At present, most feed mills in China use ring die pelleting to produce aquatic feed. The hard pellet feed produced by ring die granulation sinks to the bottom of the water for 10~20min and then collapses, the feeding intake is poor, and some of it remains in the water environment, which is seriously polluted to water quality; The extruded feed is a high-quality and environmentally friendly feed with low pollution, less waste and high conversion rate after high temperature and high pressure. Therefore, aquatic extruded material has gradually replaced hard granular material to become the mainstream trend of aquatic feed.

The production process of aquatic extruded feed generally includes raw material crushing, mixing, secondary powder, extrusion and puffing, drying, cooling and other processes, in which extrusion extrusion has a very important position in the whole process, and has a great impact on the quality and production efficiency of feed. To this end, this paper discusses the working characteristics and reasonable selection of single and twin-screw aquatic feed extrusion extrusion machines, so as to provide a reference for manufacturers to correctly apply aquatic feed extrusion extrusion machines, so that the extrusion technology can really play a role in production, so as to increase production, reduce consumption, and improve nutrient digestibility and energy utilization efficiency during feeding.