Drying is important before briquetting process. To get the superior quality of biomass briquettes with high density, it is necessary to control the moisture of material at 8-12% exactly. The selection of drying plant models depends on the original moisture content of raw materials.

Wood dryer is suitable for drying materials like sawdust, rice hull, milling wheat straw, corn stalks and so on. The moisture of wet materials is at 20-60%. The wood dryer is equipped one fuel boiler, inlet, steel pipe, exhaust blower (fan), cyclone. Wet materials are input into the hopper. The fuel boiler generates hot air which mixes with wet materials and then is sucked into the pipes by the exhaust blower (fan) quickly. And then hot air is flowing and going though the curving pipes and buffer (drying chamber) of dryer, thus wet materials is finished to dry, and the dried materials are expelled out by the exhaust blower (fan). This wood dryer reduces the moisture to 8-12% with the advantages of lower cost consumption and high efficiency.

Model	HJ-I	HJ-II	HJ-III	HJ-IV
Number of motors	1	3	3	3
Power	4	7.5+0.75+0.75	11+0.75+0.75	15+0.75+0.75
Capacity	300-400	500-600	700-800	1000-1200
Diameter of materials	<1mm & < 5mm	<1mm & < 5mm	<1mm & < 5mm	<1mm & < 5mm
Gross Weight(kg)	1100	2260	3080	3120
Consumption of wood waste(kg/h)	10-15	15-20	20-30	25-35
Overall dimension( m )(length*width*height) (space required)	7*2*4	9*2*4	12*2.5*4	12*2.5*4
Shipping size(m3)	(2 pcs) 1.5*1.06*1.1 2.44*1.22*1.55	(3 pcs) 1.23*1.24*1.73 1.5*1.06*1.1 2.44*1.22*2.1	(3 pcs) 1.23*1.24*1.73 1.45*1.42*1.41 2.45*1.72*1.91	(3 pcs) 1.38*1.3*1.8 1.6*1.5*1.5 2.53*1.8*2.0
Working Temperature	400 ℃	400 ℃	400 ℃	400 ℃
No need to use other gauges fitted