Roller Hearth Sintering Furnace for Halide Electrolytes
A high-performance roller hearth furnace designed specifically for the sintering of halide solid-state electrolytes, such as Li₃YCl₆, Li₃InCl₆, and other chloride-based compounds. The system enables continuous processing under inert or reducing atmospheres, with precise temperature control and corrosion-resistant construction, ensuring high material crystallinity and densification.
Compatible with powders, films, trays; continuous or batch operation
Flexible for various material forms and workflows
Analysis of Technical Specifications and Compatibility with Halide Electrolyte Sintering Process
Model: GWDL-700ZQLB Equipment Name: Roller Sintering Furnace for Halide Electrolyte Rated Temperature: Up to 700°C Power Supply: AC 380V, 10kW Effective Loading Volume: 330mm (L) × 330mm (W) × 100mm (H) External Dimensions: 1200mm (L) × 1000mm (W) × 1900mm (H) Max Load Capacity: ≤50 kg
1. Temperature Control Precision
Capability: Programmable temperature range from room temp to 700°C with ±1°C display precision, ±2°C uniformity during holding phase. Max heating rate 15°C/min; controlled cooling at 1–5°C/min.
Relevance: Chloride-based solid electrolytes are highly sensitive to over-sintering and require narrow thermal windows to achieve crystallization without decomposition. Precise heating/cooling ramps and tight uniformity are essential to avoid unwanted phase transitions.
2. Corrosion Resistance
Materials Used: Reaction-bonded SiC rollers, SUS316 chamber components, Al₂O₃ vacuum-formed insulation, hollow-sphere alumina boards at wear points.
Design: Fully sealed furnace with programmable gas inlet (mass flow controller), bottom-up N₂ injection, O₂ level control ≤30 ppm, pressure regulation via frequency-controlled fan and pressure sensors.
Relevance: Maintaining ultra-low oxygen and moisture levels is vital to prevent halide decomposition. Controlled atmosphere ensures material purity and consistent phase composition.
4. Furnace Structure & Thermal Insulation
Features: 3-layered ceramic insulation (≥200mm total thickness), layered composite firebrick structure for door and ceiling, SiC top/bottom heating elements.
Relevance: Prevents heat loss, ensures consistent chamber temperature, and minimizes surface hotspots. Maintains long-term thermal stability even during prolonged holding stages.
5. Roller & Loading Mechanism
System: Horizontally aligned SiC rollers for smooth tray handling; furnace door opens sideways (180°–360°), spring-locked.
Relevance: Allows stable, damage-free movement of fragile pellets or powder trays, especially during high-temperature operation. Side-door and roller design prevent gas leaks and heat loss.
6. Vacuum and Pressure Control
System: Integrated vacuum exhaust and overpressure protection; vacuum capacity to -0.1 MPa, leak rate <10 kPa per 24h.
Relevance: Partial vacuum is useful for pre-evacuation and pressure sintering. Maintains process pressure and ensures halide electrolyte densification without oxidation.
7. Advanced Controls & Data Logging
System: 30-segment programmable PID controller, touchscreen interface, full data acquisition (temperature, flow, pressure, power, alarms) with real-time export and remote monitoring.
Relevance: Enables high-fidelity process optimization and traceability, essential for scaling to pilot or production lines with strict material performance targets.
