1150℃ Large Double Quartz Tube Rotary Calcination Furnace – GWDL-1150QDR
Product Overview
The GWDL-1150QDR is a high-performance rotary calcination furnace designed for powder, ceramics, glass, refractory materials, and high-purity material processing. Built with dual long quartz tubes and an advanced automation system, it achieves uniform heating, efficient cooling, and stable continuous production. Its design emphasizes energy efficiency, durability, and environmental protection, making it an ideal choice for large-scale industrial applications.
Technical Specifications
- Design Max. Temperature: 1050℃
- Operating Temperature: 100–1000℃
- Quartz Tube Size: Ø420×Ø404×7500 mm × 2 pcs
- Heating Zone Length: 6000 mm × 2 pcs
- Cooling Zone Length: 5000 mm × 1 pc
- Heating Elements: SiC heating rods (Model: 1600 type)
- Temperature Control: Intelligent PID + SCR power control, fully automatic
- Surface Temperature: ≤50℃
- Heating Zones: 3 independent zones (front/middle/rear)
- Temperature Accuracy: ±1℃
- Tube Rotation Speed: 0–5 rpm, continuously adjustable by inverter
- Tube Inclination Angle: 0–3° adjustable
- Capacity: 25–33 kg/h (reference)
- Power Rating: 180 kW, heating rate 10–20℃/min, auto power adjustment
- Power Supply: 380V, 50Hz, 3P+N
- Cooling Method: Water spray cooling system
- Sealing: Stainless steel dual dust-proof sealing covers at tube inlet/outlet
- Feeding System: Variable-pitch screw feeder with 0.75 kW motor, SUS304 stainless steel body
- Discharge System: Butterfly valve with DN150 flange + dual 50L containers
- Vacuum Loader: 7.5 kW twin-stage pump, capacity up to 400 L/h
- Control System: Siemens S7-1500 PLC, touch screen, remote monitoring, fault alarm, curve storage
- Temperature Measurement: NiCr-NiSi (K-type) thermocouples, 5 control points + 4 monitoring points
- Refractory Material: High-purity alumina fiber insulation modules
Design Features & Workflow
Rotary Quartz Tube Heating
- Dual long quartz tubes (7.5 m each) with external heating.
- Internal baffles increase material dispersion, enhancing uniform thermal exposure.
- Smooth rotation ensures homogeneous heating across the batch.
Independent Heating Zones
- 3 separate heating zones with PID-controlled SiC elements.
- ±1℃ precision ensures stable calcination quality.
- Over-temperature alarms and interlock protection safeguard equipment.
Cooling System
- Spray-water jacket cooling section (5 m length).
- Rapid temperature reduction prevents thermal stress damage.
- Integrated DN30 inlet & DN80 outlet for circulation water, flow rate 20–40 m³/h.
Feeding & Discharge System
- Variable-pitch screw feeder prevents bridging and ensures continuous flow.
- Connected to vacuum loader for automated raw material supply.
- Flexible discharge via butterfly valve and interchangeable collection bins.
Sealing & Dust Collection
- Dual-layer stainless steel sealing covers at both ends prevent leakage.
- Integrated bag dust collector (300 m³/h) ensures eco-friendly operation.
Drive & Support System
- Chain drive with frequency-controlled motors (2.2 kW for heating section, 1.1 kW for cooling section).
- Adjustable support rollers extend tube service life and reduce mechanical wear.
Intelligent Automation
- Siemens S7-1500 PLC with touch screen interface.
- Full automation of heating, cooling, feeding, and discharging.
- Remote control, curve storage, fault alarms, and real-time monitoring.
Performance Highlights
- Energy Efficiency: Modular insulation reduces energy use by >20% compared with conventional kilns.
- Low Surface Temperature: ≤50℃ exterior improves workplace safety and comfort.
- Smart Control: Full automation with real-time data collection, alarms, and flexible programming.
- Enhanced Safety: Over-current, over-voltage, over-temperature, and thermocouple failure protection.
- Reliable Sealing: Dual sealing prevents material leakage and ensures clean operation.
- Easy Maintenance: Modular design simplifies disassembly and inspection.
- Anti-Bridging Feeding: Screw + rotor design prevents material blockage.
- Durability: Oil trap prevents contamination around support rollers.
Application Fields
- Glass Industry – Quartz and specialty glass calcination.
- Ceramics – Sintering of structural and electronic ceramics.
- Powder Metallurgy – High-purity powder thermal treatment.
- New Materials – Functional and energy storage materials.
- Refractories & Chemicals – Thermal processing of advanced compounds.
