Optimized process and operating parameters raise thermal efficiency to about 50–60%: lifting plates improve heat utilization by 20–30%, cutting coal and electricity use by 30–70% versus conventional dryers while lifting hourly output by 50–85%.
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The single-cylinder dryer is a rotary drying device that removes moisture from bulk materials through direct contact with high-temperature air inside a rotating drum. Internal lifting plates continuously lift and scatter the material as the drum turns, ensuring full heat exchange, uniform drying and rapid moisture evaporation.
With a simple structure, large internal space utilization and reliable sealing, it delivers high thermal efficiency (about 50–60%) and low operating cost — coal and electricity consumption are 30–70% below conventional dryers, while hourly output rises 50–85%. It can be integrated with crushing, grinding and screening equipment to form a complete drying production line.
Cement drying
Gypsum powder drying
Tailings drying
Slag drying
- Ores: iron ore concentrate, copper ore, gold ore, quartz sand, etc.
- Coal: washed coal, coal slime (moisture ≤30%)
- Building materials: clay, limestone, gypsum, river sand
- Industrial residues: tailings, slag, leaching residues
Not recommended: highly viscous materials (e.g. sludge) and heat-sensitive materials that easily decompose or burn.
- By capacity: small units (0.5–5 t/h, Φ600–Φ1000) for labs and small production; medium (5–20 t/h, Φ1200–Φ1800) for small-to-medium mines; large (20–50+ t/h, Φ2000–Φ3200) for large processing plants.
- By moisture: feed moisture generally 10–40%; higher moisture or sticky material requires extended drum length or special lifting-plate design.
- By feed size: feed particle size <10 mm is ideal.
- Heat source: choose coal (most economical), gas, oil or electric heating according to site conditions and environmental requirements.
The cylinder body of the dryer is made of steel material, which has the characteristics of high hardness and high toughness; and compared with other materials, its wear resistance is higher.
Due to the high air velocity, the material is well dispersed in the gas phase, and the entire surface of the material can be used as the effective drying area, so the limited drying area is greatly increased.
The dryer system has good sealing performance and is equipped with a complete dust removal device so that the dust is small and the operating environment is good.
The new internal structure strengthens the cleaning and heat conduction of the dispersed materials.
A heat source (hot air furnace or burner) generates high-temperature air that enters the drum and contacts the wet material directly; moisture evaporates quickly and is carried away by the airflow.
The motor-driven drum rotates, and internal lifting plates continuously lift and scatter the material, keeping it in full contact with the hot air while preventing buildup and agglomeration for even heating.
The inclined drum uses gravity to move the material steadily toward the discharge end, controlling residence time so it is fully dried.
| Specification(m) | Volume(m3) | Capacity(t/h) | Inclined Angle(%) | Temperature(℃) | Main Motor(kw) |
| Φ1.2×10 | 11.3 | 2.4-3.0 | 3-5 | 700-800 | 7.5 |
| Φ1.2×12 | 13.5 | 2.4-4.5 | 3-5 | 700-800 | 7.5 |
| Φ1.5×12 | 21.2 | 4.5-5.7 | 3-5 | 700-800 | 15 |
| Φ1.5×15 | 26.5 | 5.7-7.1 | 3-5 | 700-800 | 15 |
| Φ1.8×14 | 35.6 | 7.6-9.7 | 3-5 | 700-800 | 18.5 |
| Φ1.8×20 | 50.8 | 9-12.5 | 3-5 | 700-800 | 22 |
| Φ2.0×16 | 50.24 | 9.5-13 | 3-5 | 700-800 | 18.5 |
| Φ2.0×20 | 62.8 | 9.5-13 | 3-5 | 700-800 | 30 |
| Φ2.2×12 | 45.6 | 9.7-12.2 | 3-5 | 700-800 | 22 |
| Φ2.2×16 | 60.8 | 13.0-16.2 | 3-5 | 700-800 | 22 |
| Φ2.4×18 | 81.4 | 17.4-21.7 | 3-5 | 700-800 | 37 |
| Φ2.4×20 | 90.4 | 19.3-24.1 | 3-5 | 700-800 | 45 |
| Φ2.4×22 | 99.5 | 21.2-26.5 | 3-5 | 700-800 | 45 |
| Φ2.6×24 | 127.4 | 27.2-34.0 | 3-5 | 700-800 | 55 |
| Φ3.0×20 | 141.3 | 30.1-37.7 | 3-5 | 700-800 | 75 |
| Φ3.0×25 | 176.6 | 37.7-47.1 | 3-5 | 700-800 | 75 |
Ores (iron concentrate, copper, gold, quartz sand), coal (washed coal, coal slime with moisture ≤30%), building materials (clay, limestone, gypsum), and industrial residues (tailings, slag). Not recommended: highly viscous materials (e.g. sludge) and heat-sensitive materials that decompose or burn.
From 0.5 t/h for small lab or pilot units up to 50+ t/h for large plants. Roughly: small 5–20 t/h, medium 20–100 t/h, large 100–500 t/h. Actual output depends on the material, feed size and moisture.
The heat source can be coal (most common), gas, oil or electric. Thermal efficiency is about 50–60%, and power consumption is roughly 5–15 kWh per ton, depending on material moisture and system design.
Daily: check bearing lubrication, gear wear and lifting-plate fixation. Weekly: clean residual material from the drum to prevent buildup. Monthly: inspect the refractory lining and hot-air duct. Annually: replace severely worn support rollers, gears and seals.
The single-drum unit has lower thermal efficiency (~50–60% vs. higher for three-drum) but lower equipment cost, simpler operation and easier maintenance — a cost-effective choice when investment budget is limited and space is available.
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