Clay is a fundamental raw material in the ceramic, paper, rubber, paint, drilling mud, and building materials industries. Common clays include kaolin, bentonite, ball clay, and fire clay. Natural clay ore has a moisture content as high as 15%-35%, with some wet-mined clays reaching 40%-50%. High-moisture clay not only increases transportation costs but also significantly affects downstream processing (grinding, screening, pelletizing) efficiency, and is highly prone to clumping, wall sticking, and equipment blockages.
Our Clay Single-Drum Rotary Dryer is specifically designed for high-viscosity, high-moisture clay materials. Utilizing rotary drum drying technology combined with a patented powerful breaking device, anti-sticking self-cleaning lifting plate system, and low-temperature high-air-volume process, it rapidly reduces clay moisture from 15%-40% down to 5%-10%, preserving clay crystal structure and whiteness while ensuring product quality.
Compared with triple-pass dryers, the single-drum rotary dryer features a simpler structure, lower capital investment, and easier maintenance—making it particularly suitable for small to medium-scale clay processing projects. Whether for ceramic plants, paper mills, or bentonite processing plants, one system can meet the drying needs of various clays.
The Clay Dryer is widely used for the following clay types:
| Clay Category | Typical Materials | Post-Drying Applications | Value Proposition |
|---|---|---|---|
| Kaolin | Washed kaolin, calcined kaolin raw ore | Paper fillers, ceramic raw materials, paints, rubber fillers | Control moisture, improve whiteness and plasticity |
| Bentonite | Sodium bentonite, calcium bentonite | Drilling muds, foundry binders, cat litter, geosynthetic clay liners | Dewater, maintain swelling properties and activity |
| Ball Clay | Ball clay raw ore | High-grade ceramics, sanitary ware, insulation materials | Reduce moisture, improve binding strength and plasticity |
| Fire Clay | Hard clay, soft clay | Refractory bricks, castables, kiln furniture | Remove moisture, improve refractoriness |
| Common Clay | Red clay, yellow clay | Bricks, cement raw materials, ceramsite | Drying facilitates crushing and forming |
Core Value After Drying:
30%-50% Weight Reduction: Significantly lowers transportation costs
Improved Processing Performance: Easier grinding, screening, and pelletizing after drying
Prevents Clumping & Blockage: Completely solves wall sticking and ring formation
Preserves Whiteness & Activity: Low-temperature drying retains natural whiteness and swelling properties
Long-Term Storage: Moisture reduced to 5%-10%, enabling 12-24 months of safe storage
This Clay Single-Drum Rotary Dryer utilizes a co-current rotary drying process, specially optimized for the high-moisture, high-viscosity, and easily clumping characteristics of clay:
Step 1: Powerful Breaking & Uniform Feeding
Wet clay (15%-40% moisture) is fed into the dryer inlet via a belt or screw conveyor. Clay is extremely sticky and prone to clumping and blockages. The feed inlet is equipped with a patented heavy-duty powerful breaking device, consisting of high-speed rotating shafts and specially shaped blades, which instantly breaks agglomerated wet clay into fine particles or flocculent form, preventing feed inlet blockages and laying the foundation for uniform drying.
Step 2: Anti-Sticking Self-Cleaning Heat Exchange
The broken material enters the rotating cylinder. The cylinder rotates at a set speed, and the interior features a segmented anti-sticking self-cleaning lifting plate system. The specially designed curvature and arrangement of the lifting plates continuously lift, drop, and disperse the material during rotation, forming a uniform "material curtain" that maximizes heat exchange area, while utilizing the material's own gravity and inertia to automatically scrape off adhered wet clay from the plate surfaces—completely solving the worldwide problem of "wall sticking and ring formation."
A hot air furnace generates 150°C-350°C low-temperature hot air (temperature precisely adjustable based on clay thermal sensitivity), which flows co-currently with the material inside the cylinder. The high-air-volume design ensures rapid moisture evaporation while preventing high-temperature damage to clay whiteness or crystal structure.
Step 3: Co-Current Drying & Dewatering
Hot air and material flow in the same direction. High-temperature air first contacts the highest-moisture material, rapidly evaporating surface free water. As the material moves toward the discharge end, the air temperature gradually decreases, enabling gentle deep dewatering that removes bound moisture from within the clay. The entire process takes approximately 20-35 minutes, reducing moisture from 15%-40% to 5%-10%.
Step 4: Gas-Solid Separation & Exhaust Treatment
Dried clay is discharged via a discharger, proceeding to subsequent grinding, classification, or packaging processes. The dust-laden, humid exhaust gas enters a high-efficiency pulse baghouse filter for purification before being safely discharged. Recovered fine powder can be remixed into the final product, achieving zero loss.
| Model | Cylinder Dia. (m) | Cylinder Length (m) | Capacity (t/h) | Initial Moisture | Final Moisture | Power (kW) |
|---|---|---|---|---|---|---|
| CD-1.2×10 | 1.2 | 10 | 2-6 | 15%-35% | 5%-10% | 22 |
| CD-1.5×12 | 1.5 | 12 | 4-10 | 15%-35% | 5%-10% | 37 |
| CD-1.8×14 | 1.8 | 14 | 7-16 | 15%-35% | 5%-10% | 55 |
| CD-2.0×16 | 2.0 | 16 | 10-22 | 15%-35% | 5%-10% | 75 |
| CD-2.2×18 | 2.2 | 18 | 15-30 | 15%-35% | 5%-10% | 90 |
| CD-2.4×20 | 2.4 | 20 | 20-40 | 15%-35% | 5%-10% | 110 |
| CD-2.6×22 | 2.6 | 22 | 28-55 | 15%-35% | 5%-10% | 132 |
Designed for Clay Processing: We deeply understand the high viscosity, high moisture, and easy clumping characteristics of clay. From the powerful breaking device to anti-sticking self-cleaning lifting plates, from low-temperature processes to temperature control strategies, every aspect is optimized for clay, ensuring whiteness and activity remain unaffected after drying.
Increase Product Value: Through low-temperature drying, we preserve the natural whiteness of kaolin (maintaining over 90%) and the swelling properties of bentonite (swelling index retention over 90%), enabling your products to command higher prices in ceramic, paper, drilling mud, and other markets.
Completely Solve Wall Sticking & Blockage: The biggest pain point of traditional clay dryers is wall sticking and ring formation. Our anti-sticking self-cleaning lifting plate system automatically scrapes off adhered material during rotation, enabling hundreds of hours of continuous operation without cleaning—significantly improving equipment utilization.
Lower Capital Investment, Shorter Payback Period: The single-drum rotary structure is simple and reliable, reducing equipment investment by 30%-40% compared to triple-pass dryers, with lower maintenance costs—making it the most cost-effective choice for clay processing projects.
Global Service Network: With over 20 years of experience serving the global non-metallic mineral industry, our products have been exported to over 50 countries and regions including the US, Germany, India, Turkey, Brazil, Mexico, Vietnam, and Indonesia. We dispatch engineers for overseas installation and commissioning, providing bilingual technical support.
EPC Turnkey Capability: From material testing, process design, and equipment manufacturing to installation, commissioning, and personnel training—complete turnkey engineering services.
Upgrade your clay from "high-moisture raw material" to "high-value product"! If you are struggling with low drying efficiency, wall sticking, blockages, or inconsistent quality, contact us today to get a clay drying solution tailored to your specific material.
Get Your Customized Solution:
Request a Quote → Tell us your capacity, clay type, heat source availability, and site conditions, and we will respond within 24 hours
Schedule a Technical Discussion → Speak one-on-one with our non-metallic mineral drying engineer
