The type of furnace employed for calcining is dependent entirely upon the product to be processed and whilst traditional furnaces for calcining are continuous pusher, plate type conveyor, rotary retort etc., alternative calcining furnaces similar to that depicted, which is a mesh belt furnace, may be employed to suit the specific application.

The unit illustrated is a continuous mesh belt conveyor unit suitable for processing 1800 parts per hour of components and utilises a rapid heat transfer system for the first two zones with the latter two zones employed to finalise the calcining process. The unit incorporates energy saving features wherein the fresh air intake is preheated by the outgoing contaminants.

Standard units have programmable microprocessor based controls and strategically positioned high velocity excess air burners to regulate heat input that surrounds and penetrates the load to provide close temperature control and uniformity. An energy efficient, low thermal mass fibre lining allows for rapid heating and cooling.

This is especially important when production needs are variable, and range from dense, tightly packed small items to large, heavy parts which require complicated heating schedules or quick turnaround.

Prestige Thermal Equipment belt furnaces and ovens are the reliable and economic way to carry out continuous heat processing of ceramic, glass or metal materials. These continuous belt systems are available in wide ranges of length, width, conveyor speeds and temperature zone configuration to suit individual process requirements.

Units with widths up to 3 meters and lengths of 30 meters or more allow selection of the right size system for the best combination of production cost and energy efficiency. Choices of electric or fuel fired models are available with conveyors designed for process temperatures up to 1035°C in various atmospheres.

CERAMICS: Ferrites, titantes, steatites, alumina, substrates,
porcelain, abrasives, glass.

METALS: Ferrous, non-ferrous, brazing, annealing, hardening,
sintering, heat treatment.

Exterior - Modular construction consisting of heavy gauge steel, welded and reinforced with structural steel members and outer cladding plates to form integral units.

Interior - Standard linings of energy saving multi-layer fiber insulation. Other linings are available for special process requirements.

Conveyor - Conveyor materials selected to meet process conditions. Positive tracking conveyor guides and support members amply distributed through the load zones. Drive mechanism and idlers provided with variable speed, positive traction and tensioning adjustments.

Process Zones - Designed to meet specific process requirements for pre-heating, soak, cooling and atmosphere. Electric or fuel fired systems for radiant, recirculating, direct or indirect operation are available.

• Various belt widths, working heights above conveyors, zonal lengths, heat input ratings and conveyor speeds. Special alloy conveyors.
• Door - Power operated door closures and zone partitions. Powered exhaust and recirculation systems.
• High velocity jets for controlling flow of gases within chamber.
• Cooling - Variety of techniques to match product and atmosphere
  requirements.
• Special interior linings - zone separation, adjustable baffles for zone separation when product height varies.
• Instrumentation ranging from basic on-off to full proportioning automatic temperature control.
• Conveyor controls ranging from push button to fully automatic sequenced and interlocked systems.