U screw conveyor is suitable for conveying various powder, granulated and small lump materials, such as flour, corn, sand pulverized coal, cement, and all kinds of small pieces of coal and rock, etc.

The effects of screw speed, salt (0 ~ 3%) and sugar (0 ~ 8%) contents on the extrusion of rice flour using a corotating, fully intermeshing twin-screw extruder were studied.