Rotary drum dryer is also famous as rotary kiln, which is mainly applied to cut down or minimize the moisture content of agro-forestry wastes like  sawdust for further pelletizing process. The rotary drum dryer consists of a large rotating cylindrical tube. The rotary drum dryer is a special design to dry the wood materials together with other biomass material powders up to 40% moisture content to 15%, which is needed to make pellets. A complete drying system consists of two main parts: furnace which is providing heat source for drying raw material; dryer which is rotoried and dried the materials to 15% moisture content by the hot air from the furnace.

Different Layers of Rotary Drum Dryers:



Technical Parameters:

Model	Diameter(mm)	Length(m)	Power(kw)	Speed rotation(r/min)
HZG6	600	4,5,6,7,8	3-5.5	3-20 adjustment
HZG8	800	4,6,7,8,9,10	5.5-7.5	3-20 adjustment
HZG10	1000	6,7,8,9,10,11,12	5.5-7.5	3-20 adjustment
HZG12	1200	6,8,10,12,14,16	7.5-11	3-20 adjustment
HZG15	1500	8,10,12,14,16,18	11-15	3-20 adjustment
HZG18	1800	8,10,12,14,16,18,20	15-18.5	3-20 adjustment
HZG22	2200	10,12,14,16,18,20,22,25	18.5-22	3-20 adjustment
HZG24	2400	12,14,16,18,20,22,25	22-30	3-20 adjustment

What kinds of raw materials need to be dried by rotary drum dryer?
Usually, the rotary drum dryer process the raw materials including agro-forestry wastes, sawdust, animal wastes and animal feeds in pellet mill plant or feed pellet production line.

Our dryer features single and multi-layers technology that moves materials through the drum in an air stream made by the dryer induced-draft fan. The multiple layers are mechanically interlocked to rotate at the same speed. As the drum rotates, the material is repeatedly showed into the dryer hot gas.