Fluidized Bed Calcination Furnace for Powder and Fine Particle Materials

High-Efficiency Thermal Processing System with Precise Temperature Control

Introduction

The ZYLAB Fluidized Bed Calcination Furnace is an advanced thermal processing system designed for the calcination, decomposition, oxidation, and heat treatment of powder and fine particle materials. Based on fluidization technology, the furnace uses high-speed hot airflow to suspend materials in a fluidized “boiling” state, achieving extremely efficient gas-solid heat transfer and uniform thermal processing.

The system is widely used in laboratories, research institutes, pilot-scale production, and advanced material development applications.

Working Principle

The fluidized bed calcination furnace introduces powder or fine granular materials into a high-temperature airflow environment. The particles are suspended and fully dispersed by the gas stream, greatly increasing the contact area between gas and solids for rapid heat transfer and reaction efficiency.

The system mainly consists of:

• Multi-stage suspension preheater
• Fluidized calcination chamber
• Cyclone separator
• Cooling system
• Air supply and combustion system

Process Flow

Material Preheating

Materials pass through multi-stage cyclone preheaters and exchange heat counter-currently with high-temperature exhaust gas for rapid heating.

Fluidized Calcination

Preheated materials enter the calcination chamber and remain suspended in high-temperature airflow (600–1280°C), where decomposition, oxidation, and thermal reactions are completed efficiently.

Separation and Cooling

The reacted material is separated from exhaust gas through a cyclone separator and cooled to obtain the final product.

Heat Recovery

High-temperature exhaust gas is recycled back into the preheating system to maximize thermal efficiency and reduce energy consumption.

Features of Fluidized Bed Calcination Furnace

High Heat Transfer Efficiency

• Extremely large gas-solid contact area
• Thermal efficiency above 80%
• Fast heat transfer and reaction speed
• 30–50% lower energy consumption compared with traditional rotary kilns

Uniform and Stable Product Quality

• Uniform heating without dead zones
• No local overheating or underheating
• Precise control of temperature, atmosphere, and processing time
• Stable chemical composition and material activity

Excellent Environmental Performance

• Fully enclosed system with minimal dust leakage
• Low NOₓ generation
• Supports coordinated desulfurization processes

Strong Material Adaptability

• Ideal for powders and fine particles below 1 mm
• Suitable for fine ores, tailings, waste slag, and catalyst materials
• Effective for materials difficult to process in rotary kilns or shaft kilns

Compact Structure and High Automation

• Vertical compact structure saves installation space
• Continuous automatic operation
• Stable performance and simplified maintenance

Typical Applications

• Catalyst calcination
• Battery material processing
• Powder metallurgy
• Ceramic powder heat treatment
• Rare earth material processing
• Fine chemical materials
• Mineral roasting and decomposition
• Waste residue recycling
• New material research laboratories

Technical Specifications

Intelligent Control System

Multiple Programmable Process Recipes

• Multiple heating curves can be preset and stored
• Supports process optimization and repeatability
• Suitable for laboratory and research applications

Scheduled Operation

• Supports unattended scheduled calcination
• Improves equipment utilization efficiency
• Reduces sample preparation waiting time

Real-Time Data Recording

• Real-time display of temperature, voltage, and power
• Automatic process data recording
• Exportable digital records for paperless management

Remote Monitoring and Control

Users can remotely monitor and control the furnace through computers or mobile devices, including:

• Temperature monitoring
• Pressure monitoring
• Heating rate adjustment
• Remote start/pause control

Nonlinear Temperature Correction

Advanced algorithms automatically compensate for temperature deviation between the control point and actual sample position, improving temperature consistency and experimental accuracy.

Pressure Measurement System

Mechanical pressure gauges with airtight housing provide:

• High-temperature resistance
• Corrosion resistance
• Stable long-term monitoring performance

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Fluidized Bed Technology

The Differences Between Calcination and Sintering Processes

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