Mixing & drying silo is mainly used to mix and dry plastic flakes, granules, etc. Working principle: Raw material is elevated from the bottom of the barrel to the top, because the screw does the high-speed rotary motion, then the material is cast and scatter in the form of an umbrella, finally the material will get back to the bottom, and the heater will heat the air and blow it into the inside of the silo barrel for drying. So a large quantity of material will finish well-proportioned mixing and drying in a short time.