The present invention relates to an improved process for the drying of wet cake and condensed thick stillage in a grain based distillery particularly obtained from Broken Rice as feed substrate, using two stage drying. The two stage drying includes steam tube bundle rotary drying followed by spin flash dryer/ pin mill type Attritor flash drying. The Dried Distillers Grain Soluble so obtained has particle size of 600-2000 microns substantially free from large agglomerates and 10-12% moisture content suitable for animal feed supplement/fish feed. The present invention also relates to the dryer/ equipments wherein the process of the invention may be carried out.
