Roller Dryer Mineral Powder Steel Slag Drying Equipment Mortar
Mechanism
Working Principle of Roller Dryer
1. The dry wet material is sent to the hopper by a belt conveyor or
bucket elevator, and then enters the feeding end through the
feeding pipe of the hopper feeder. The inclination of the feeding
pipe should be greater than the natural inclination of the material
so that the material can flow smoothly into the dryer. The dryer
cylinder is a rotating cylinder slightly inclined to the horizontal
line. The material is added from the higher end, and the heat
carrier enters from the lower end, and contacts with the material
in countercurrent. There are also heat carriers and materials that
flow into the cylinder together. As the cylinder rotates, the
material moves to the lower end under the action of gravity. During
the forward movement of the wet material in the cylinder, it
directly or indirectly obtains heat from the heat carrier, so that
the wet material can be dried, and then sent out at the discharge
end through a belt conveyor or a screw conveyor.
2. A shoveling plate is installed on the inner wall of the drum
dryer cylinder. Its function is to scoop up and scatter the
material, so that the contact surface between the material and the
airflow is increased to increase the drying rate and promote the
advancement of the material. The heat carrier is generally divided
into hot air, flue gas, etc. After the heat carrier passes through
the dryer, a cyclone dust collector is generally required to
capture the materials in the gas. If the dust content of the tail
gas needs to be further reduced, it should also pass through a bag
dust collector or a wet dust collector before being discharged.
Performance Characteristics of Roller Dryer
1. Adopting the downstream drying method, hot air and wet materials
enter the dryer from the same side, high-temperature air can be
used to obtain high evaporation intensity, low dryer outlet
temperature and high thermal efficiency;
2. Strong anti-overload ability, large processing capacity, low
fuel consumption and low drying cost;
3. Adopting new feeding and discharging devices, it eliminates
feeding blockage, discontinuity, unevenness and return of
materials, and reduces the load of dust removal system;
4. The operating parameters can be changed according to the
properties of different materials, so that the material can form a
stable full-section material curtain in the cylinder, and the mass
and heat exchange is more sufficient;
5. It realizes "zero horizontal thrust", greatly reduces the wear
of the support wheel, and the cylinder runs smoothly and reliably;
6. Adopting "self-aligning support wheel device", the support wheel
and the roller ring are always in linear contact, which greatly
reduces wear and power loss;
7. The moisture content of the product can be controlled according
to user requirements.
Roller Dryer Product Technical Parameters
| Specification(m) | Cylinder volume (m3) | Installation slope (%) | Temperature(℃) | Main motor(kw) | Total weight (t) |
| Φ1.2x10 | 11.3 | 3-5 | 700-800 | 7.5 | 11 |
| Φ1.5x15 | 26.5 | 3-5 | 700-800 | 15 | 20.5 |
| Φ1.8x14 | 35.6 | 3-5 | 700-800 | 18.5 | 23 |
| Φ2.2x16 | 60.8 | 3-5 | 700-800 | 22 | 38 |
| Φ2.4x18 | 81.4 | 3-5 | 700-800 | 37 | 49 |
| Φ2.4x22 | 99.5 | 3-5 | 700-800 | 45 | 58 |
| Φ2.6x24 | 127.4 | 3-5 | 700-800 | 55 | 73 |
| Φ3.0x20 | 141.3 | 3-5 | 700-800 | 75 | 85 |
| Φ3.0x25 | 176.6 | 3-5 | 700-800 | 75 | 95 |
| Φ3.2x25 | 201 | 3-5 | 700-800 | 90 | 110 |
| Φ3.6x28 | 285 | 3-5 | 700-800 | 160 | 135 |
