Processes for separating whole stillage

A process for recovering an oil product, a protein meal product, and a corn fiber product from corn pieces comprising:

• introducing the corn pieces into an ethanol production process to produce a whole stillage;
• introducing the whole stillage into a filtration device comprising a flexible screen and a mechanical agitation mechanism to produce a filtrate and a fibrous solid stream;
• introducing the filtrate into a three-phase centrifuge to produce the oil product, a high protein solids stream, and a solubles stream;
• dewatering the fibrous solid stream to produce a wet fibrous stream;
• drying the high protein solids stream to produce the protein meal product;
• evaporating the solubles stream to produce a condensed solubles stream;
• mixing the wet fibrous stream and the condensed solubles stream to produce a mixture;
• drying the mixture to produce the corn fiber with solubles product;
• and
• recycling at least a portion of the filtrate to the whole stillage.