The washing system is mainly used for extraction of refined starch milk, removing of contained soluble and insoluble proteins and the possible small fiber.

Principles: Starch milk and wash water was the upstream way through the washing system, referring main flow chart of multi-stage cyclone separator system (Figure 8).
Washing system usually consists of 6 to 12 stages .and each cyclone consists of several parallel-connected hydro-cyclone tubes.