The coal slime dryer is a critical industrial device for processing high-viscosity coal slime. It adopts advanced high-efficiency heat exchange technology to reduce moisture content, enabling the recycling of coal slime. With its energy-saving, environmentally friendly features and strong adaptability, it has become a preferred choice in industrial drying applications.
Basic Information
Specially designed for sticky materials like coal slime, the Zhenjieneng Rotary Rake Flying Three-Stage Multi-Loop Dryer offers exceptional performance:
- Self-aligning riding wheel structure minimizes power loss.
- Pre-dispersing device ensures uniform material fragmentation.
- Segmented drying process (consisting of a feeding zone, cleaning zone, inclined lifting plate zone, and discharge zone) maximizes thermal efficiency.
Field Test Results: Effectively reduces the moisture content of wet coal slime from 25-40% to approximately 12%, meeting stringent industrial dehydration requirements.
Features & Advantages
- High Efficiency & Energy Saving: Boosts thermal efficiency by over 30% and cuts fuel consumption by 20% compared to conventional equipment.
- Strong Adaptability: High-temperature resistant design handles diverse operating conditions; special materials prevent sticky materials from adhering to the inner wall.
- Environmental Compliance: Equipped with a wet desulfurization and dust removal system, ensuring dust emission concentration is below 50mg/m³.
- Modular Expansion: Increase capacity by adding drying units without replacing the entire system.
- Stable & Durable: Self-aligning riding wheel structure ensures stable cylinder operation, reducing annual maintenance costs by 15%.
Applications
- Coal Industry: Dried coal slime achieves a calorific value of over 3,000 kcal/kg, suitable for direct use as fuel in power plants.
- Building Materials: Processes raw materials such as quartz sand, maintaining a stable moisture content of ≤ 0.5%.
- Mineral Processing: Dries metal concentrates to a moisture content of ≤ 8%, meeting smelting standards.
- Chemical Production: Ensures precise temperature control (±5℃) for drying non-thermal sensitive materials.
- Solid Waste Utilization: Dried coal slime serves as a cement raw material, with a blending ratio of 15-20%.
Process Flow
- Preprocessing: A plate chain feeder delivers crushed materials, with a processing capacity of 10-50 tons per hour.
- Guided Feeding & Drying: 650℃ hot air rapidly evaporates surface moisture; large-inclination lifters prevent sticking.
- Crushing & Cleaning: A rotating cleaning device breaks up agglomerates, improving heat exchange efficiency by 40%.
- Stepwise Drying: A three-stage loop design gradually reduces moisture content (20% → 15% → 12%).
- Discharging & Cooling: A star-shaped discharger combined with cyclone dust removal ensures the discharge temperature is ≤ 60℃.
When employing the low-temperature four-stage drying process (600℃ → 450℃ → 300℃ → 100℃), the pulverized coal burnout rate is controlled below 0.3%, achieving an additional 25% energy savings. The equipment’s motor power ranges from 55kW to 132kW, making it suitable for production lines of various scales.