The indirect heat rotary dryer design provides for heating under oxidizing, reducing, or inert atmospheric conditions. The rotary dryer design consists principally of a rotating cylinder that is enclosed in an electric heating along its active length. With heat transfer indirect and through the cylinder wall.
Applications that are appropriate for indirect heat rotary dryers involve a wide variety of fine powders, granular materials, pellets and extrudates that require product temperatures 200- 500°C, bed temperature profiling and special atmospheres.
In order to get maximum utilization of radiation heat transfer, the interior of the dryer cylinder is fitted with agitating flights or special internals to gently handle and promote even heat transfer to the process material.
Indirect Heat Rotary Dryer Features:
Automatic temperature, pressure and electrical controls with furnaces featuring electrical heating elements arranged in zones.
Available in sizes ranging from 600-4500mm in diameter with lengths from 8-35m.
Typical materials processed in indirect rotary dryers:
Alumina, Activated Carbon, Metallic Oxides, Rare Earth Compounds, Manganese Oxide, Catalysts, Coke, Coal, Ferrites, Nuclear Materials, Metal Scrap, Pigments
Indirect Heat Rotary Dryer Technical Details
| Type | Spec | Dia of Roll | Length of roll | Gradient | Speed(rpm) | Weight(t) | Motor Power(kw) | Heating Power (KW) |
| HY600 | φ 0.6× 8 | φ 600 | 8m | 3-5 | 8 | 5.1 | 4/6p | 45 |
| HY800 | φ 0.8× 10 | φ 800 | 10 m | 3-5 | 7.2 | 6.9 | 4/6p | 60 |
| HY1000 | φ 1.0× 10 | φ 1000 | 10m | 3-5 | 6.73 | 7.5 | 5.5/6p | 90 |
| HY1200 | φ 1.2× 12 | φ 1200 | 12m | 3-5 | 5.8 | 13.1 | 11/6p | 120 |
| HY1500 | φ 1.5× 12 | φ 1500 | 12m | 3-5 | 4.8 | 22.3 | 15/6p | 150 |
| HY2200 | φ 2.2× 14 | φ 2200 | 14m | 3-5 | 3.2 | 52.8 | 30 | 200 |
| HY2400 | φ 2.4× 18 | φ 2400 | 18m | 3-5 | 3 | 73.3 | 37 | 300 |
| HY2800 | φ 2.8× 24 | φ 2800 | 24m | 3-5 | 2.59 | 97 | 75 | 400 |
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