... 3.high thernak efficiency 4.compact structure Tumble dryer machine:Main purposes: tumble dryer machine is used dry humidity particle materials, ... to heatHeat transfer directlySource of heatCoal, oil, electricity, gas, biofuelRev4-10r/minDrive of power5.5 KW11 KW15 KW22 ... , dedusting machine, induced draft fan and so on Tumble dryer machine features:the outer canister can keep thermal insulation ...