Energy Saving Power Plant Equipment Water Cooled / Air Cooled Slag Cooler

The slag cooler is a core auxiliary equipment specially designed for circulating fluidized bed boilers, thermal power plants, chemical plants and metallurgical industries. It is applied to continuously cool high-temperature boiler slag (up to 1100℃) to below 100℃, realizing automatic slag discharging, waste heat recovery, closed dust suppression and resource recycling of slag.

We provide drum type water-cooled slag cooler and air-cooled slag cooler two mainstream models, adapting to different water resource conditions and on-site layout demands, featuring stable continuous operation, low energy consumption and minimal maintenance.

High-temperature slag enters the rotating drum from the feeding inlet. Through combined heat transfer of conduction, convection and radiation between the double-layer drum, internal spiral heat exchange fins and cooling medium (circulating water or forced air), the slag is cooled evenly while being pushed forward slowly. The whole process operates in a fully sealed structure, avoiding dust leakage and splash; the recovered waste heat can be recycled into the boiler system to improve overall energy efficiency.

• Feeding & Discharging Assembly: Anti-blocking and anti-slag-spraying design, smooth feeding without material accumulation.
• Double-layer Rotary Drum: Made of wear-resistant and high-temperature resistant alloy steel; embedded continuous spiral heat transfer sheets for enlarged heat exchange area.
• Drive System: Low-speed stable drive, low noise, low power consumption and long service life.
• Cooling System: Water cooling / air cooling optional; supports ordinary industrial circulating water without softening treatment.
• Sealing & Electric Control System: Advanced mechanical sealing for zero leakage; intelligent PLC automatic control, realizing unattended operation and over-temperature/over-load protection.

• High Cooling Efficiency: Uniform heat exchange, stable discharge temperature below 100℃, large processing capacity (customizable 5–50 t/h).
• Energy & Cost Saving: Low water and power consumption; waste heat recovery reduces boiler energy loss; cooled slag can be directly used as cement raw material for additional economic benefits.
• Anti-blocking & Durable: No relative motion between spiral blades and drum, effectively preventing slag jamming; wear-resistant lining extends service life with low replacement cost.
• Eco-friendly & Safe: Fully closed structure eliminates dust pollution; complies with industrial environmental protection standards; equipped with multiple safety interlock protection devices.
• Wide Adaptability: Water-cooled type for conventional power plants; air-cooled type for water-scarce areas; compact structure, small floor space and easy installation.

Thermal power plants, CFB boiler supporting, chemical industry, metallurgy, garbage incineration plants, cement plants and other industries needing high-temperature slag treatment and cooling.

We support customized design according to customer’s boiler parameters, slag handling capacity, site space and cooling method requirements. Provide one-stop service including solution design, manufacturing, on-site installation, commissioning and lifelong after-sales maintenance.