... be reduced to below 5% 2.coal, oil, gas can be used rotary dryer introduction 1. Technical Parameter: type(mm ... , metallurgical, building materials industries.4. Working principle of rotary drierIts principle of operation: the raw material plate which is ... materials would be dried.5. Whole set rotary dryer equipmentsfeeder, bucket elevator, rotary dryer,dust collector, heat resourceIf any preference ...