Rotary drying machine is divided into many types, for example, Limestone Dryer, Roller Dryer, Rotary Drum Dryer, Gypsum Dryer, Slag Dryer, Sand Dryer, Sawdust Dryer,Slime Dryer, Spray Dryer and so on. Drying equipment is widely used in building materials, metallurgy, chemical industry and cement industry and is broadly applied to dry the materials such as limestone, coal powder, slag and clay. It mainly consists of revolving part, raising stuff plate, driving device, supporting device and seal ring.

Working Principle of Drying Machine:

The wet materials are transported into the material hopper by the belt conveyor and bucket elevator, and gets into the feeding terminal through feeding pipe with the aid of feeder of material hopper. The pitch of the feeding pipe should be more than the natural pitch of materials in order to help the materials flow into the dryer machine successfully. The roller dryer is a rotary cylinder which is oblique slightly. The materials are fed from the relatively higher terminal, heat carrier comes in from the lower terminal, and sometimes the heat carrier and materials get into the cylinder together. Along with the revolving of cylinder, the materials move to the lower terminal due to the gravity. When the wet materials move forward, it receives the heat from the heat carrier directly or indirectly. As a result, the wet materials are dried, and discharged out by belt conveyor or screw conveyor on the outlet. There is shoveling plate inside the cylinder in order to shovel materials up and cast it out, to increase the connection surface, to promote drying efficiency, and accelerate the forward movement of materials. Generally, the heat carrier can be hot air and chimney flue.

Main Features of Dryer Machine:

1. High drying strength. Since the materials are highly dispersed in the air, so that the surface of the particles are all the effectively drying size.

2. Short drying time.

3. The structure of the air drying equipment is simple and covers a small size, so that it is easy to set up and maintain.

4. High processing quantity and high heating efficiency. When drying non-integrated water, the heat efficiency can reach 60%.

5. It realizes 'zero-level pushing force', thus greatly reducing the abrasion of the supporting wheel and the operation of the cylinder is stable and reliable.

6. This machine adopts " regulating mental supporting device" , so that the combination of the supporting wheel and the roller is always in a linear way, thus greatly reducing the abrasion and movement wear and tear.

Spec./m (Dia.×Length)	Shell Cubage (m3)	Capacity (t/h)	Installation Obliquity (%)	Highest Inlet Air Temperature (℃)	Main Motor (KW)	Weight (t)
Φ1.2×8.0	9.0	1.9 ~ 2.4	3 ~ 5	700 ~ 800	7.5	9
Φ1.2×10	11.3	2.4 ~ 3.0	3 ~ 5	700 ~ 800	7.5	11
Φ1.5×12	21.2	4.5 ~ 5.7	3 ~ 5	700 ~ 800	15	18.5
Φ1.5×14	24.7	5.3 ~ 6.6	3 ~ 5	700 ~ 800	15	19.7
Φ1.5×15	26.5	5.7 ~ 7.1	3 ~ 5	700 ~ 800	15	20.5
Φ1.8×12	30.5	6.5 ~ 8.1	3 ~ 5	700 ~ 800	18.5	21.5
Φ1.8×14	35.6	7.6 ~ 9.5	3 ~ 5	700 ~ 800	18.5	23
Φ2.2×12	45.6	9.7 ~ 12.2	3 ~ 5	700 ~ 800	22	33.5
Φ2.2×14	53.2	11.4 ~ 14.2	3 ~ 5	700 ~ 800	22	36
Φ2.2×16	60.8	13.0 ~ 16.2	3 ~ 5	700 ~ 800	22	38
Φ2.4×14	63.3	13.5 ~ 16.9	3 ~ 5	700 ~ 800	37	45
Φ2.4×18	81.4	17.4 ~ 21.7	3 ~ 5	700 ~ 800	37	49
Φ2.4×20	90.4	19.3 ~ 24.1	3 ~ 5	700 ~ 800	45	54
Φ2.4×22	99.5	21.2 ~ 26.5	3 ~ 5	700 ~ 800	45	58
Φ2.6×24	127.4	27.2 ~ 34.0	3 ~ 5	700 ~ 800	55	73
Φ3.0×20	141.3	30.1 ~ 37.7	3 ~ 5	700 ~ 800	75	85
Φ3.0×25	176.6	37.7 ~ 47.1	3 ~ 5	700 ~ 800	75	95
Φ3.2×25	201	42.9 ~ 53.6	3 ~ 5	700 ~ 800	90	110
Φ3.6×28	285	60.8 ~ 76.0	3 ~ 5	700 ~ 800	160	1350