Potash Feldspar rotary drum dryer capacity 3TPH-70TPH

1.Product Introduction Rotary drum dryer

The equipment features a horizontal inclined rotary drum structure, with dimensions customized to meet processing capacities of 3–70 TPH. The drum is set at an inclination of 2°–5°, features adjustable rotation speeds (3–8 rpm), and is equipped with an integrated multi-section lifting flight system.

The core design highlights include an anti-sticking internal lining and a downstream drying mode, which effectively solve the industry-wide challenge of potassium feldspar powder clumping and adhering to the drum walls under high temperatures. The system supports multiple heat sources—including coal, natural gas, and biomass—with a hot air temperature range of 300–600°C. Final moisture content is stably controlled below 0.5%, meeting the rigorous standards for high-purity raw materials.

2.Application Rotary drum dryer

• Ceramic Industry: Used as a flux for glazes and ceramic bodies; drying improves firing density and color stability while preventing glaze bubbles and cracking.

• Glass Manufacturing: Used for the pre-drying of glass batches to reduce melting energy consumption and enhance the homogeneity and transparency of the molten glass.

• Chemical Raw Material Preparation: Serves as a precursor for the production of potassium salts (e.g., potassium carbonate, potassium sulfate); drying facilitates subsequent acid leaching or calcination reactions.

• Non-Metallic Mineral Deep Processing: Suitable for dehydration treatment after the beneficiation of kaolin or quartz sand associated with potassium feldspar, improving product whiteness and purity.

3.Working Principle Rotary drum dryer

• Feeding System: Wet potassium feldspar powder is uniformly fed into the inlet via a screw conveyor or belt scale. A specialized anti-clogging feeding device prevents material "bridging."

• Drying Process: As the drum rotates slowly, the lifting flights repeatedly raise and shower the material, creating a uniform "material curtain." Hot air enters from the feeding end (co-current/downstream drying), making full contact with the wet material for efficient heat and mass transfer. The internal walls utilize a special wear-resistant coating and flow-guiding structure to completely eliminate material adhesion.

• Gas-Solid Separation: Evaporated moisture enters a cyclone separator + baghouse dust collection system with the exhaust gas. The dust recovery rate exceeds 99%, ensuring tail gas emissions meet environmental standards.

• Discharge Control: Dried material is discharged from the outlet and, after cooling and screening, proceeds directly to the milling or batching stage.

4.Advantages Rotary drum dryer

• Exceptional Anti-Sticking Performance: The combination of a specialized internal coating and a downstream (co-current) airflow design prevents the "wall-clinging" effect common with fine potassium feldspar powder, ensuring consistent flow and reducing downtime for cleaning.

• High Precision Moisture Control: The system can achieve ultra-low residual moisture (<0.5%). This level of precision is critical for the ceramics and glass industries, where even minor moisture fluctuations can compromise the quality of the final product.

• Large-Scale Production Stability: With a throughput range of 3–70 TPH, the equipment is built for heavy industrial use. The reinforced tire and roller assembly allows for high-load, continuous operation with minimal vibration.

• Optimized Thermal Efficiency: The multi-section lifting flight system ensures that the material is distributed across the entire cross-section of the drum, maximizing the heat exchange area and lowering energy consumption per ton of dried product.

• Eco-Friendly and High Recovery: By integrating high-efficiency cyclone and baghouse filtration, the system captures nearly all fine particles, preventing product loss and ensuring compliance with modern environmental air quality standards.

• Intelligent Operation: Advanced PLC-based control systems allow for real-time monitoring and adjustment of internal temperatures and rotation speeds, ensuring the equipment adapts automatically to variations in feedstock moisture.

5.Technical Specifications Rotary drum dryer

6.Our Solutions