... , the thermal efficiency can reach 60%. Working Principle Wood chips rotary dryer contains: heat furnace, feeding hole, ... following industries: straw press briquettes fuel, charcoal machinery, wood chip granule fuel, sawdust press blocks, farming and animal ... soybean straw, cotton straw, wheat straw, sorghum straw, wood chips, wood shaving, sawdust drying, ginkgo leaf drying and mulberry leaves drying ...