Fluidized Bed Cooling System for Material Temperature Control

The FTB Fluidized Bed Cooler is a high-efficiency, energy-saving, and eco-friendly sand cooling system based on the fluidization principle, specifically designed for rapid cooling of hot resin sand, reclaimed sand, or coated sand in foundries. Clean cold air passes upward through a perforated plate, suspending sand particles in a "boiling" state within the bed, enabling full, uniform, and efficient heat exchange between sand and air. It rapidly cools sand from 100–120°C down to ≤45°C, meeting process requirements for subsequent mixing, molding, or storage.

The fully enclosed design combined with a pulse cartridge dust collector prevents dust leakage during cooling—ensuring compliance with national emission standards (≤5 mg/m³). The cooled sand exhibits stable temperature, uniform moisture, and excellent flowability, significantly improving mixing quality and molding efficiency. It is a core cooling component in the sand handling system of modern green foundries.

Feeding Stage

 Hot sand enters the fluidized bed via feed chute or pneumatic conveying, with sand layer thickness controlled by an automatic adjustable weir to ensure uniform distribution.

High-pressure cold air, driven by a centrifugal fan + air filter, enters the plenum chamber and passes through a perforated distributor plate (or ceramic plate), suspending sand particles in a fluidized "boiling" state. Full contact between sand and air enables efficient heat transfer, with heat carried away by the air.

 Cooled sand continuously discharges via overflow weir or adjustable gate to downstream conveyors or silos. Dust-laden exhaust gas is purified through an upper dust chamber + cartridge filter before emission, with dust recovery >99.5%.

 Equipped with temperature sensors (inlet/outlet) + differential pressure sensors + VFD-controlled fan, enabling automatic airflow adjustment for stable, controllable sand temperature and energy efficiency.

High Cooling Efficiency, Rapid Temperature Drop
Cooling capacity: 2–30 t/h; cooling time: 2–5 minutes; temperature drop: 60–80°C—significantly improving production rhythm.

Uniform Cooling, Stable Sand Quality
Fluidization ensures every sand grain contacts cold air—no "hot/cold pockets"; post-cooling temperature variation ≤±2°C, minimal moisture loss, excellent flowability.

Fully Enclosed, Dust-Free & Eco-Friendly
Enclosed design + high-efficiency cartridge filter; dust emission ≤5 mg/m³, noise ≤80 dB(A)—compliant with GB 16297, GB 12348.

Energy-Saving, Low Operating Cost
VFD fan + optional heat recovery system saves 30–50% energy compared to rotary drum coolers—adjustable airflow prevents waste.

Wear-Resistant, Easy Maintenance
Distributor plate, liners, and discharge areas use ceramic, polyurethane, or NM400 alloy steel; modular design allows easy inspection and long service life.

Intelligent Control, Remote Monitoring
Optional PLC + HMI touchscreen + remote monitoring for automatic control of temperature, airflow, alarms, and data logging—supports MES integration.

Sand temperature regulation before resin sand mixers

Rapid cooling of hot reclaimed sand after reclamation

Cooling and screening of coated sand (shell sand) in production lines

Integrated with central sand supply and automated molding lines for precise temperature control

Cooling and drying of powders in chemical, food, and pharmaceutical industries

Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery equipment. It mainly manufactures equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam casting, sodium silicate sand, etc. It can undertake various turnkey projects, including the design, manufacturing, installation and commissioning of mechanical sand processing. Our factory has strong technical strength and advanced processing equipment. We have long-term and close technical cooperation with many senior experts and scholars from domestic universities and research institutions. We can provide users with high-performance, reliable products and satisfactory services.
Our company adheres to the principles of promoting enterprise development through technology, prioritizing quality, continuous improvement and customer satisfaction. We are willing to sincerely cooperate with friends from all walks of life to achieve common prosperity.
Our company mainly undertakes the following projects:
20-180t/h mechanized clay sand processing production line and single machine equipment turnkey project.
Annual production of 1000 to 20,000 tons of consolidated resin sand casting mechanized production line and single machine equipment turnkey project.
Annual production of 3,000 to 10,000 tons of hot processing coated sand complete equipment and single machine equipment turnkey project.
Annual production of 3,000 to 7,000 tons of hot coating sand regeneration complete equipment and single machine equipment turnkey project.
5-15t/h sodium silicate mechanical production line and single machine equipment turnkey project.
5-30t/h three-stage sand drying equipment and single machine equipment turnkey project.
5-40t/h lost foam casting complete equipment and single machine equipment turnkey project and other types of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, environmental protection dust removal equipment.
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