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1.dryer with cyclone and fan, 2.hot air current dryer, 3.one time could get dry effect, 4.high capacity: 800-1000kg/h - details see: https://www.machineto.com/high-capacity-wooden-sawdust-dryer-for-sale-10287141

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.

models: 1.Air-flow Drying Machine ( for low mositure raw material and low capacity

(1) introduction of the air-flow drying machine

Air-flow drying machine adopts airflow wink-dry principle and it has many advantages such as large drying intensity, short time, less consumption, simple operation and so on.

Airflow drying machine is suitable for starch, rice flour, food, chemical, medical industry and other fields for drying powder and thermal sensitivity materials.

Application materials: rice husk, saw dust, wood dust, wood shavings, wood chips, branches, etc. with the diameter less than 3mm and length less than 5mm. The temperature of drying machine ranges from 180°C-250°C.

(2) feature of the air-flow drying machine

• Large drying intensity. Because of the high speed airflow, drying machine can regard whole surface as active area. In this way, the drying area increases. At the same time, due to the dispersion and agitation, the surface of gasification updates constantly. Therefore, it has large drying intensity in the drying process.
• Short drying time. The contact time between material and air is very short. Generally speaking, drying time is 0.5-5 seconds.
• High efficiency. Airflow drying machine adopts parallel flow of material and gas. From first, material temperature and air temperature all have reasonable condition. So it has higher temperature and high efficiency.
• Airflow drying machine has wide application, large output, simple structure, less investment, etc.(3)Material requirement

sensitive particular material as saw dust,rice hull,milled wheat straw,ground wood chip,wood bits, etc. Size: less than 3*5mm

(4)Working principle

In the dryer, high-speed hot air stream sustain raw material in the suspending state, then the material is dried. Since air stream speed is very high, and materials suspending in air stream, the heat transfer surface between air and raw material is large, so the heat transfer rate is high.

(5)The specification of Sawdust Airflow Dryer/pipe dryer

Model	Power(KW)	Capacity(kg/h)	Dia. of materials	Gross Weight(kg)
HJ-4	4	100-300	<1mm & < 5mm	1100
HJ-6	7.5+0.75+0.75	400-600	<1mm & < 5mm	2260
HJ-8	11+0.75+0.75	700-800	<1mm & < 5mm	3080
HJ-9	15+0.75+0.75	900-1000	<1mm & < 5mm	3120

models 2:rotary drum Drying Machine(for high moisture raw material and high output)

Introduction:

Sawdust dryer is widely used to dry wood sawdust, wood chips, rice husk, sugar cane bagasse, etc. which isthe pre-processing for making pellet, briquette, biomass fuel, etc.

Rotary Dryer is special designed to dry the Wood material which combines the function of drying and cooling, so it can save 30-50% energy.Rotary type dryer shows the features of perfect drying effect, easy operation, high efficiency and easy control of drying. It takes advantage of the stability of roller and homogeneity of air

suitable for drying materials of moisture 30-60% It has the larger capacity , can meet the high capacity need

Working principle:

Rotary Dryer adopts direct flow type of heating with heat source from firing uint. The material to be dried is pushed back immediately by spiral board when enters the shell from feeding tank and feeding chute. Because the Rotary Dryer is installed in slope, material flows to the back end under gravity and rotation force, meanwhile, the Rotary Dryer lifted by board repeatedly and thrown down accordingly, which make the material from even curtain and exchange heat sufficiently with inner the heat flow. In the end, water in the material is dried by repeatedly scattering.

Technical Parameter:

Model	GT650	GT800	GT1000	GT-1200	GT1500
Capacity kg/h	600-800	800-1000	1200-1500	1500-2000	2000-2500
Main Power	5.5kw	7.5kw	7.5kw	11kw	15kw
Air lock power	1.1kw	1.5kw	2.2kw	2.2kw	2.2kw
Weight	2600kg	2800kg	3800kg	5800kg	6500kg
Diameter of roller	0.68m	0.8m	1m	1.2m	1.5m
Length of roller	9m	10m	10m	10m	10m

Structure

1, Fireplace is the place where the firewood, coal, gas or other material is burning for heat, there is a specially designed buffer which can make the hot air through but provent the fire in.

2, Loading place is beside the fireplace, thus the material can be dry at a early time.

3, Roller is running evenly to make the material drying and processing at the same time.

4, Discharging unit is installed with thermeter to control drying temperature. The temperature change of dryer's feeding end can be indicated by the thermometer to control the inner drier temperature ( generally 250-350°C)

5, The cyclone is for the discharging, whcih is more convenient and air lock for making the discharging little noise and no waste.