The drum dryer is mainly used to dry materials with high moisture content and strict particle size requirements, such as slag, limestone, clay, river sand, quartz sand, and water slag. Its maximum capacity can reach 40 tons per hour, while the smallest rotary dryer can handle 0.5 tons per hour. It is highly efficient and fast.
Materials continuously tumble inside the dryer drum, ensuring thorough drying. It is more suitable for materials that do not require strict control over final shape, color, or odor. The rotary dryer is widely used in industries such as building materials, metallurgy, minerals, and chemicals.
Dans le sèche-linge, le matériau est continuellement projeté, retourné et laissé tomber sous l'action des lames rotatives à grande vitesse et du panneau de matériau, et en même temps, il a un contact suffisant avec l'air chaud à haute température pour effectuer fort échange thermique par convection, pour réaliser un séchage efficace des matériaux.
Introduction du séchoir à tambour
Le séchoir à tambour, également connu sous le nom de séchoir à rouleaux ou séchoir rotatif, est l'équipement de séchage le plus courant et le plus utilisé dans les équipements industriels. Le séchoir à tambour est un séchoir destiné au traitement de grandes quantités de matières premières largement utilisées dans la métallurgie, les matériaux de construction, l'industrie chimique, le charbon, l'industrie pharmaceutique et l'industrie minière. Les matériaux couramment utilisés pour sécher le sable, la poudre minérale, la conduite de charbon, le fumier de poulet, le fumier de vache, etc.
Composition du séchoir à tambour
The drum drying equipment is mainly composed of the rotating body, lifting plate, transmission device, supporting device, and sealing ring. It adopted the new type of material lifting plate device that has multiple functions, such as guidance, flow sharing, material lifting, etc. It can make the material distribute evenly in the radial section of the dryer, and the material curtain becomes thin, uniform, and complete. So that it can fully contact the hot gas flow to achieve the purpose of making full use of heat energy.
Rotating drum
The main cylinder, where materials rotate and dry.
Lifting plates
Specially designed to guide, spread, and lift materials evenly.
Drive system
Powers the drum to rotate.
Support system
Holds the drum steady during operation.
Sealing rings
Prevent material and heat from escaping, improving drying efficiency.
Combustion chamber
The core component that generates hot air for drying.
Principe du séchoir rotatif
The wet materials are sent to the hopper by the belt conveyor or bucket elevator, and then the material will enter the feeding end through the feeding pipe. The inclination of the feeding pipe should be bigger 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.
Under the rotation of the drum and the action of internal lifting plates, the materials continuously tumble and mix while exchanging heat with hot air or the heated drum wall. Moisture gradually evaporates, and the materials move forward along the drum, finally discharging as dried products from the outlet, achieving continuous and efficient drying.
Applications dans le séchoir industriel à tambour
Les séchoirs à tambour de l'usine de séchage Shuliy sont largement utilisés dans les matériaux de construction, la métallurgie, les minéraux, les produits chimiques, le ciment et d'autres industries. Ils sont principalement utilisés pour les scories, le calcaire, l'argile, le sable de rivière, le sable de quartz et les scories d'eau. Ils peuvent également être utilisés pour sécher le fumier animal et d'autres matériaux à forte humidité.
Exposition du séchoir à tambour
Caractéristiques du séchoir à rouleaux
- Technologie de séchage avancée, utilisant une technologie de séchage rapide à haute température, un coefficient de transfert de chaleur élevé, une efficacité thermique élevée et une résistance de séchage élevée ;
- The dryer has a high degree of automation and does not require too much manual operation. The system operation realizes automatic control and adjustment. Reducing production safety hazards and improving drying efficiency.
- A large fluctuation range is allowed in operation, easy to operate.
- With the direct contact between the hot gas flow and the material, the output can meet the needs of different users from 10 tons to 100 tons per hour under the condition of sufficient heat exchange.
- The drum dryer has strong expandability, and the design takes into account the production margin. Even if the output increases slightly, there is no need to replace the equipment.
Paramètre du séchoir à tambour
| Modèle (mm) | Vitesse de rotation (r/min) | Température initiale | Puissance (kw) | capacité (t/h) | Poids（t） |
| SL600*6000 | 3-8 | ≤700 | 3 | 0.5-1.5 | 2.9 |
| SL800*8000 | 3-8 | ≤700 | 4 | 0.8-2.0 | 3.5 |
| SL800*10000 | 3-8 | ≤700 | 4 | 0.8-2.5 | 4.5 |
| SL1000*10000 | 3-8 | ≤700 | 5.5 | 1.0-3.5 | 5.6 |
| SL1200*12000 | 3-8 | ≤700 | 7.5 | 1.8-5 | 14.5 |
| SL1200*12000 | 3-8 | ≤700 | 11 | 2-6 | 14.8 |
| SL1500*12000 | 2-6 | ≤800 | 15 | 3.5-9 | 17.8 |
| SL1800*12000 | 2-6 | ≤800 | 18 | 5-12 | 25 |
| SL2200*12000 | 1.5-6 | ≤800 | 18.5 | 6-15 | 33 |
| SL2200*18000 | 1.5-6 | ≤800 | 22 | 10-18 | 53.8 |
| SL2200*20000 | 1.5-6 | ≤800 | 30 | 12-20 | 56 |
| SL2400*20000 | 1.5-5 | ≤800 | 37 | 18-30 | 60 |
| SL3000*20000 | 1.5-5 | ≤800 | 55 | 25-35 | 78 |
| SL3000*25000 | 1.5-5 | ≤800 | 75 | 32-40 | 104.9 |
Comment un séchoir rotatif sèche-t-il le calcaire ?
The rotary dryer dries limestone by tumoring the material inside a rotating drum while it is heated by hot air or the drum wall. As the drum rotates, internal lifting plates lift and mix the limestone, ensuring uniform heat transfer. Moisture gradually evaporates, and the dried limestone moves forward along the drum to the discharge end, achieving continuous and efficient drying.
| Paramètre | Range/Value | Description |
|---|---|---|
| Feed moisture | 10–25% | Moisture content of raw limestone |
| Discharge moisture | 1–3% | Target moisture after drying |
| Drum length | 6–20 m | Selected according to capacity and drying requirements |
| Drum diameter | 1–3 m | Determines material retention time and tumbling effect |
| Drum inclination | 2–5° | Ensures smooth material movement |
| Drum rotation speed | 1–5 rpm | Controls drying time and material tumbling |
| Hot air temperature | 150–400 ℃ | Adjusted based on limestone particle size and moisture |
| Capacité | 5–50 t/h | Material handling capacity under continuous operation |
Key points for data analysis
- Moisture evaporation efficiency: Higher feed moisture requires higher hot air temperature and longer drum retention time.
- Material retention time: Drum length × inclination × rotation speed determines the drying time of limestone in the drum, directly affecting the uniformity of discharge moisture.
- Energy consumption analysis: Hot air temperature is directly related to output; optimizing drum speed and inclination can reduce energy consumption per ton of limestone.
- Uniform drying: Lifting plate design and drum tumbling ensure thorough heating, reducing over-dried or wet lumps.
The above is a simple data analysis for limestone drying. If you want to learn more or explore other drying solutions, please contact us through the pop-up chat.