Working Principle of Industrial Rotary Dryer<\/strong><\/h2>\n\n\n\nThe operation of an industrial rotary dryer<\/strong> is based on thermal conduction and mass transfer<\/strong>. The process can be summarized in the following steps:<\/p>\n\n\n\n\n- Feeding:<\/strong> Wet material enters the rotating drum via a conveyor or feeder.<\/li>\n\n\n\n
- Heating:<\/strong> Hot air flows through the drum, either in the same direction (co-current) or opposite direction (counter-current) to the material.<\/li>\n\n\n\n
- Drying:<\/strong> As the drum rotates, internal lifters lift and shower the material through the hot air stream, enhancing contact and moisture evaporation.<\/li>\n\n\n\n
- Moisture Evaporation:<\/strong> Water is vaporized and carried away with the exhaust gas.<\/li>\n\n\n\n
- Discharging:<\/strong> Dried material exits the drum through the discharge outlet and is collected for packaging or further processing.<\/li>\n<\/ol>\n\n\n\n
This continuous drying mechanism ensures uniform drying, high thermal efficiency<\/strong>, and minimal material degradation.<\/p>\n\n\n\n
<\/figure>\n\n\n\nTypes of Industrial Rotary Dryers<\/strong><\/h2>\n\n\n\n1. Direct Rotary Dryer<\/strong><\/h3>\n\n\n\nThe most common design, suitable for non-sensitive materials like minerals, sand, and fertilizers. Hot gases directly contact the feed material.<\/p>\n\n\n\n
2. Indirect Rotary Dryer<\/strong><\/h3>\n\n\n\nUses a heat exchanger or external shell heating. Ideal for powders, chemicals, or materials that must not contact combustion gases.<\/p>\n\n\n\n
3. Triple-Pass Rotary Dryer<\/strong><\/h3>\n\n\n\nA high-efficiency version that uses three concentric drums to increase residence time and improve thermal utilization.<\/p>\n\n\n\n
4. Vacuum Rotary Dryer<\/strong><\/h3>\n\n\n\nOperates under reduced pressure to lower the drying temperature, used for heat-sensitive and solvent-based materials.<\/p>\n\n\n\n
Key Features and Advantages<\/strong><\/h2>\n\n\n\n1. High Thermal Efficiency<\/strong><\/h3>\n\n\n\nRotary dryers utilize direct heat transfer and tumbling motion, achieving high evaporation rates with minimal energy loss.<\/p>\n\n\n\n
2. Continuous Operation<\/strong><\/h3>\n\n\n\nCapable of running 24\/7, suitable for large-scale production lines in industrial plants.<\/p>\n\n\n\n
3. Versatile Application<\/strong><\/h3>\n\n\n\nAdaptable to various materials\u2014such as sand, limestone, clay, coal, biomass, and fertilizer<\/strong>\u2014by modifying the drum configuration and drying temperature.<\/p>\n\n\n\n4. Adjustable Parameters<\/strong><\/h3>\n\n\n\nDrum speed, air temperature, and residence time can be precisely controlled to meet specific moisture targets.<\/p>\n\n\n\n
5. Durable Construction<\/strong><\/h3>\n\n\n\nBuilt with high-quality steel and wear-resistant linings for long service life under harsh industrial conditions.<\/p>\n\n\n\n
6. Easy Maintenance<\/strong><\/h3>\n\n\n\nSimple mechanical design with few moving parts ensures low downtime and easy repair.<\/p>\n\n\n\n
<\/figure>\n<\/div>\n<\/div>\n\n\n\nIndustrial rotary dryer Parameter<\/strong><\/h2>\n\n\n\n <\/strong>Mod\u00e8le<\/strong><\/td>Cylinder diameter<\/strong>(<\/strong>m<\/strong>m)<\/strong><\/td>Cylinder length<\/strong>(<\/strong>m<\/strong>m)<\/strong><\/td>Cylinder volume<\/strong>(m3)<\/strong><\/td>Cylinder <\/strong>rotary speed (r\/min)<\/strong><\/td>Puissance<\/strong>(<\/strong>k<\/strong>W)<\/strong><\/td>Weight<\/strong>(t)<\/strong><\/td><\/tr>| 0.6\u00d75.8<\/td> | 600<\/td> | 5800<\/td> | 1.7<\/td> | 1-8<\/td> | 3<\/td> | 2.9<\/td><\/tr> | | 0.8\u00d78<\/td> | 800<\/td> | 8000<\/td> | 4<\/td> | 1-8<\/td> | 4<\/td> | 3.5<\/td><\/tr> | | 1\u00d710<\/td> | 1000<\/td> | 10000<\/td> | 7.9<\/td> | 1-8<\/td> | 5.5<\/td> | 6.8<\/td><\/tr> | | 1.2\u00d75.8<\/td> | 1200<\/td> | 5800<\/td> | 6.8<\/td> | 1-6<\/td> | 5.5<\/td> | 6.7<\/td><\/tr> | | 1.2\u00d78<\/td> | 1200<\/td> | 8000<\/td> | 9<\/td> | 1-6<\/td> | 5.5<\/td> | 8.5<\/td><\/tr> | | 1.2\u00d710<\/td> | 1200<\/td> | 10000<\/td> | 11<\/td> | 1-6<\/td> | 7.5<\/td> | 10.7<\/td><\/tr> | | 1.2\u00d711.8<\/td> | 1200<\/td> | 11800<\/td> | 13<\/td> | 1-6<\/td> | 7.5<\/td> | 12.3<\/td><\/tr> | | 1.5\u00d78<\/td> | 1500<\/td> | 8000<\/td> | 14<\/td> | 1-5<\/td> | 11<\/td> | 14.8<\/td><\/tr> | | 1.5\u00d710<\/td> | 1500<\/td> | 10000<\/td> | 17.7<\/td> | 1-5<\/td> | 11<\/td> | 16<\/td><\/tr> | | 1.5\u00d711.8<\/td> | 1500<\/td> | 11800<\/td> | 21<\/td> | 1-5<\/td> | 15<\/td> | 17.5<\/td><\/tr> | | 1.5\u00d715<\/td> | 1500<\/td> | 15000<\/td> | 26.5<\/td> | 1-5<\/td> | 15<\/td> | 19.2<\/td><\/tr> | | 1.8\u00d710<\/td> | 1800<\/td> | 10000<\/td> | 25.5<\/td> | 1-5<\/td> | 15<\/td> | 18.1<\/td><\/tr> | | 1.8\u00d711.8<\/td> | 1800<\/td> | 11800<\/td> | 30<\/td> | 1-5<\/td> | 18.5<\/td> | 20.7<\/td><\/tr> | | 1.8\u00d715<\/td> | 1800<\/td> | 15000<\/td> | 38<\/td> | 1-5<\/td> | 18.5<\/td> | 26.3<\/td><\/tr> | | 1.8\u00d718<\/td> | 1800<\/td> | 18000<\/td> | 45.8<\/td> | 1-5<\/td> | 22<\/td> | 31.2<\/td><\/tr> | | 2\u00d711.8<\/td> | 2000<\/td> | 11800<\/td> | 37<\/td> | 1-4<\/td> | 18.5<\/td> | 28.2<\/td><\/tr> | | 2\u00d715<\/td> | 2000<\/td> | 15000<\/td> | 47<\/td> | 1-4<\/td> | 22<\/td> | 33.2<\/td><\/tr> | | 2\u00d718<\/td> | 2000<\/td> | 18000<\/td> | 56.5<\/td> | 1-4<\/td> | 22<\/td> | 39.7<\/td><\/tr> | | 2\u00d720<\/td> | 2000<\/td> | 20000<\/td> | 62.8<\/td> | 1-4<\/td> | 22<\/td> | 44.9<\/td><\/tr> | | 2.2\u00d711.8<\/td> | 2200<\/td> | 11800<\/td> | 44.8<\/td> | 1-4<\/td> | 22<\/td> | 30.5<\/td><\/tr> | | 2.2\u00d715<\/td> | 2200<\/td> | 15000<\/td> | 53<\/td> | 1-4<\/td> | 30<\/td> | 36.2<\/td><\/tr> | | 2.2\u00d718<\/td> | 2200<\/td> | 18000<\/td> | 68<\/td> | 1-4<\/td> | 30<\/td> | 43.3<\/td><\/tr> | | 2.2\u00d720<\/td> | 2200<\/td> | 20000<\/td> | 76<\/td> | 1-4<\/td> | 30<\/td> | 48.8<\/td><\/tr> | | 2.4\u00d715<\/td> | 2400<\/td> | 15000<\/td> | 68<\/td> | 1-4<\/td> | 30<\/td> | 43.7<\/td><\/tr> | | 2.4\u00d718<\/td> | 2400<\/td> | 18000<\/td> | 81<\/td> | 1-4<\/td> | 37<\/td> | 53<\/td><\/tr> | | 2.4\u00d720<\/td> | 2400<\/td> | 20000<\/td> | 91<\/td> | 1-4<\/td> | 37<\/td> | 60.5<\/td><\/tr> | | 2.4\u00d723.6<\/td> | 2400<\/td> | 23600<\/td> | 109<\/td> | 1-4<\/td> | 45<\/td> | 69.8<\/td><\/tr> | | 2.8\u00d718<\/td> | 2800<\/td> | 18000<\/td> | 111<\/td> | 1-3<\/td> | 45<\/td> | 62<\/td><\/tr> | | 2.8\u00d720<\/td> | 2800<\/td> | 20000<\/td> | 123<\/td> | 1-3<\/td> | 55<\/td> | 65<\/td><\/tr> | | 2.8\u00d723.6<\/td> | 2800<\/td> | 23600<\/td> | 148<\/td> | 1-3<\/td> | 55<\/td> | 70<\/td><\/tr> | | 2.8\u00d728<\/td> | 2800<\/td> | 28000<\/td> | 172<\/td> | 1-3<\/td> | 75<\/td> | 75<\/td><\/tr> | | 3\u00d720<\/td> | 3000<\/td> | 20000<\/td> | 14<\/td> | 1-3<\/td> | 55<\/td> | 75<\/td><\/tr> | | 3\u00d723.6<\/td> | 3000<\/td> | 23600<\/td> | 170<\/td> | 1-3<\/td> | 75<\/td> | 85<\/td><\/tr> | | 3\u00d728<\/td> | 3000<\/td> | 28000<\/td> | 198<\/td> | 1-3<\/td> | 90<\/td> | 91<\/td><\/tr> | | 3.2\u00d723.6<\/td> | 3200<\/td> | 23600<\/td> | 193<\/td> | 1-3<\/td> | 90<\/td> | 112<\/td><\/tr> | | 3.2\u00d732<\/td> | 3200<\/td> | 32000<\/td> | 257<\/td> | 1-3<\/td> | 110<\/td> | 129<\/td><\/tr> | | 3.6\u00d736<\/td> | 3600<\/td> | 36000<\/td> | 366<\/td> | 1-3<\/td> | 132<\/td> | 164<\/td><\/tr> | | 3.8\u00d736<\/td> | 3800<\/td> | 36000<\/td> | 408<\/td> | 1-3<\/td> | 160<\/td> | 187<\/td><\/tr> | | 4\u00d736<\/td> | 4000<\/td> | 36000<\/td> | 452<\/td> | 1-3<\/td> | 160<\/td> | 195<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Industrial rotary dryer<\/strong><\/strong> Video<\/strong><\/p>\n\n\n\n | | | | | | | |