Pusher Tunnel Furnaces
Harper’s pusher furnaces and tunnel kilns are ideal for processes requiring precise control of temperature and atmosphere, for those with longer residence times that require exact control of the heat up rate of the product (temperature profile), and those with a lower gas/solid reaction. Our focus is on systems that offer the greatest operating life, lowest operating cost, and highest efficiency for the manufacturing of advanced materials.
Pusher Furnace Design Enhancements
- Advanced graphite pusher furnaces for high temperature applications incorporate strategic heating element placement to achieve optimal temperature uniformity and advanced insulation designs to reduce energy consumption
- Precise control of atmosphere dew point along the length of the furnace achieved through sophisticated gas distribution technology
- Optimized design for maintenance and replacement parts and minimization of field installation effort through modular construction
- Multiple independently controlled temperature zones (length and width)
Pusher Furnace Capabilities
- Temperatures to 2800°C
- Electric, gas, or dual-fuel fired systems
- Controlled atmospheres including flammables gases, as well as multiple atmospheres
- Process gas circulating and conditioning systems
- Defined residence times and capacity
- Automatic material handling and return systems
- Advanced seal design
- Automatic feed loading and product unloading
Typical Pusher Furnace Applications
- Sintering
- Calcination
- Oxide Reduction
- Carbonization
- Solid-solid reaction
- Gas-solid reaction
- Purification
- Metalizing
- Debinding
- Parts processing
