High-Temperature Baghouse Dust Collector for Medium-Frequency Furnace
Medium-frequency furnaces (MFFs) are widely used in steel foundries, metal recycling, and precision casting. However, the smelting process produces large amounts of high-temperature dust and fumes, which pose significant threats to both environmental compliance and worker safety.
The high-temperature baghouse dust collector is specifically designed to handle these harsh conditions. With filtration efficiency ≥ 99%, it effectively captures fine and submicron particulates and ensures clean gas discharge—often below 30 mg/m³.
2️⃣ Casting operations with intermittent or continuous smelting
3️⃣ Enclosed fume capture systems requiring high-temperature resistance
4️⃣ Industrial kiln tail gas dust control
📊 Technical Parameters (Example Range)
Filtration Efficiency
≥ 99%
Outlet Dust Concentration
≤ 30 mg/m³
Operating Temperature
Up to 240°C (can be customized)
Air Volume Capacity
From a few thousand to 50,000+ m³/h
Filter Bag Material Options
Fiberglass, PTFE (Teflon), P84
Cleaning Method
Pulse-jet with PLC programmable controller
Structural Design
Modular, insulated steel housing
Control System
PLC with remote wireless operation
🧰 Recommended Filter Bag Materials
Fiberglass
~260°C
Cost-effective, moderate resistance
PTFE
~260°C
Excellent chemical & temperature resistance
P84 (Polyimide)
~260–280°C
Superior performance in fluctuating temperatures
These materials ensure long service life and high filtration performance in MFF conditions.
✅ Advantages Over Electrostatic and Wet Collectors
High Efficiency for Fine Dust Captures even submicron particles better than ESPs or cyclones.
Broad Capacity Range Scalable from small foundries to large-scale industrial smelting.
Lower Cost Than Electrostatic Precipitators More economical with similar or better filtration results.
Dust-Type Compatibility Not sensitive to particle resistivity or shape.
Smart Control System Features PLC-based automated cleaning, real-time dust level monitoring, and wireless control for charging cars and ladle cars.
🔧 Furnace Fume Control System Overview
The complete gas treatment setup typically includes:
Low-position mobile fume hood
Charging system + tapping system
Main ducting + settling chamber
Cooling air injection
ID fan + high-temperature baghouse + exhaust stack
All smelting operations (charging, melting, tapping) occur under the moving fume hood, capturing fumes efficiently from all directions. Unlike local fixed hoods, this system prevents leakage during tapping and improves occupational air quality.
🔒 Corrosion & Condensation Control Measures
To prevent corrosion caused by dew point condensation, the following strategies are used:
Reduce Moisture Content in the Furnace Gas Keep gas temperature ≥ 30°C above the dew point.
Minimize Air Leakage in the Dust Collector Use positive pressure systems and optimize sealing (e.g., dual manhole doors with silicone gaskets).
Enhance System Sealing Full welds on casing, improved duct and manhole design.
Limit Start/Stop Cycles Frequent shutdowns lower internal temperatures below the dew point; plan fewer interruptions and ensure residual heat retention.
Improve Thermal Insulation Use thick, high-quality insulation with aluminum or steel cladding. Poor insulation can lead to external condensation and structural corrosion.
