HZG-Rotary drum dryer
working principle
After the wet material is put into the dryer from one end, the material is evenly distributed and dispersed in the dryer under the turning of a plate picker evenly distributed in the inner cylinder, and is fully in contact with the hot air flowing in parallel (countercurrent), accelerating the drying heat transfer and transmitting to the driving force. During the drying process, the material is controllably moved to the star-shaped discharge valve in another section of the dryer to discharge the finished product under the action of the tilting plate and hot air flow.
Adapt materials
◎ Large particles in chemical, mining, metallurgy and other industries are drier than major materials, such as mining, blast furnace slag, coal, metal powder, phosphate fertilizer, and ammonium sulfate.
◎ Drying powder and granular materials with special requirements, such as HP foaming agent, distiller's grains residue, light calcium carbonate, activated clay, magnetic powder, graphite, and dregs.
◎ Materials that require low-temperature drying and require large quantities of continuous drying.
performance characteristics
◎ The rotary dryer has a high degree of mechanization and a large production capacity.
◎ The resistance of fluid passing through the cylinder is small and the functional consumption is low.
◎ Strong adaptability to material characteristics.
◎ Stable operation, low operating costs, and good uniformity of product drying.
schematic structural diagram
technical specifications
| model | Direct heating downstream | Direct heating downstream | Direct heating countercurrent | Direct heating countercurrent | composite heating | composite heating |
| Material type | ore | HP blowing agent | blast furnace slag | ammonium sulfate | phosphate fertilizer | coal |
| Handling capacity (kg/h) | 1000 | 466 | 15000 | 20000 | 12000 | 5000 |
| Moisture content (%) | 30 | 13 | 6 | 1.5 | 5 | 6.5 |
| Final water content (%) | 15 | 0.3 | 1 | 0.1 | 0.1 | 0.1 |
| Average particle size (mm) | 6.5 | 0.05 | 4.7 | 0.5-1.7 | 0.5 | 5 |
| Material stacking weight (kg/m3) | 770 | 800 | 1890 | 1100 | 1500 | 750 |
| Hot air volume (kg/h) | 3900 | 5400 | 10750 | 9800 | 6500 | 16000 |
| Inlet gas temperature (oC) | 600 | 165 | 500 | 180 | 650 | 570 |
| Material outlet temperature (oC) | 42 | 100 | 70 | 80 | 75 | |
| heating method | gas | steam electric heating | heavy oil | coal hot air furnace | heavy oil | heavy oil |
| loading coefficient | 6.3 | 7 | 7.5 | 7.8 | 18 | |
| Speed (rpm) | 4 | 4 | 3.5 | 3 | 4 | 2 |
| inclination | 0.04 | 0.005 | 0.03 | 0.05 | 0.05 | 0.043 |
| Number of copied boards | 12 | 24 | 12 | 22 | Inner cylinder outer 8 Outer side of inner cylinder 16 |
6 12 |
| Drier diameter (m) | 2.0 | 1.5 | 2 | 2.3 | outer cylinder 2 Inner cylinder 0.84 |
Outer cylinder 2.4 Inner cylinder 0.95 |
| Dryer length (m) | 20 | 12 | 17 | 15 | 10 | 16 |
| Driving power (kw) | 22 | 7.5 | 15 | 11 | 11 | 15 |

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