... 3 mm, length≤ 5 mm) like rice husk,wood sawdust and crushed branches, pieces, etc. by direct ... for relatively smaller industrial workshop. The humid wood sawdust and high temperature air flow concurrently and ... applied in a myriad of industrial fields such as wood pellet, food, feed, chemistry, drugs and mining ... hot air sources: oil stove, gas stove, coal stove or vapor heat exchange. If need or ...