Oil Expeller is also known as screw oil press. Continuous screw pressing can deal with almost all kinds of oilseeds and nuts (soybean, cotton seed, copra, rice bran, palm kernel). Oil pressing line usually including oil pre-treatment and oil pressing two parts. Different oil seeds materials for oil pressing plants are pre-treatment in different ways, which usually includes cleaning, de-stoning, cracking, cooking, faking before going through the expander/expeller. Next is the Mechanical Oil Pressing process. The cake is sent to the extractor/press/expeller for pressing oil, then flitered via vibrating sieve or filter press to get clean & clear crude oil.