A method of manufacturing feed pellets and plant for use in the implementation of the method

摘要

A method of manufacturing feed pellets, and a plant for the implementation of this method have been described. A method of manufacturing feed pellets having a relatively high fat content which, during manufacturing, are processed in an atmosphere exhibiting a pressure lower than ambient pressure, wherein a pressure reduction is put on immediately subsequently to a pellet excursion process, within a pellet chamber (3) at the downstream side of the pellet extruder's (1) discharge nozzle, in order to cause the pellet material to expand and bring about an increase in pore volume rendering possible a high fat content in the finishing feed pellets and wherein the pellets are subjected to a drying process. This method assists in controlling the porosity of porous pellets. The pellets come from a pelletizing machine (1) into a pellet chamber (3) which is kept at a pressure lower than the ambient pressure. From the chamber (3) the pellets are passed through an outlet (5) having a gate lock body (6) into an oil tank (8).