Improvement of Exhaust System in Screw Type Scrap Dryer

The natural exhaust system in screw type dryer often resulted in higher and fluctuated moisture content in dried scraps,therefore it was replaced by a mechanical exhaust system.After improving,the daily values of average,maximum and minimum moisture content of dried scraps were within the range specified by the technology norm(11%-13%),and the daily absolute moisture content difference was not over 1.2%.The moisture exhaust ability of the screw drier was enhanced by the mechanical exhaust system,moreover,it did not affected by environmental conditions,and the drying quality of scraps was improved.