Double drum dryer is operated for producing pregelatinized maize starches using feed starch slurries of different solids(7, 10 and13 g/100 g )content.Steam pressure (2,3,and pentair hose 4 bar), the level of pool between the drums (4,7,and 10 cm) , and speed of drums rotation (3,4,and 6 rpm) are varied together with the feed solids here content in a practical range of values.The response of the dryer is registered by measuring several output variables, i.
e.external drum temperature, product moisture content, mass flow rate.