Bottom loading furnaces are ideal when you need a furnace to achieve a variety of heating-cooling cycles, without sacrificing temperature uniformity or product quality.  Keith may not have invented the bottom loading furnace, but today Keith is recognized as one of the most successful builders of this type furnace.  Each furnace is individually designed to meet the exacting requirements of a specific process heating application. If you have a process that needs to be heated to 1800 C/3272 F, find out how you may use this type furnace for development work as well as for high volume production.

Combining 50 plus years of furnace building experience with the latest technology and quality materials enables Keith to deliver advanced furnace technology at competitive prices.  These furnaces are well suited for calcining, firing, and sintering oxide ceramic parts (alumina, zirconia, etc.), technical ceramics, co-fired substrate materials, capacitors, filters, thermistors, ferrites, powdered metal parts, and more.    

Operational Benefits

• Compact design saves floor space
• Heating system delivers more uniform process heat
• Energy efficient and durable refractory construction
• Cars facilitate loading and unloading
• Highly reliable automatic process control systems
• Ease of operation and maintenance

• Temperatures to 1650 C/3000 F with gas, and 1800 C/3272 F with electric heating
• Wire, rod overbend, silicon carbide, or molybdenum disilicide heating elements
• Chamber volumes up to 6 m3 (200 ft3)
• Single or multiple zones of temperature control
• Cars, venting, and controlled atmosphere systems
• Integration with material handling automation
• PID, PC or PLC control systems
• Designed to any available voltage

Construction

Insulation systems of brick, ceramic fiber, or a combination of both provide the right balance of durability, rapid heating and cooling, and energy efficiency.  The loading platform may be fixed on the elevator, or on a rolling car.  Electro-mechanical elevator systems provide safe, reliable and user-friendly operation for many years. 

Controls

Highly accurate microprocessor-based programmable temperature controls are standard on all systems, with integrated sequencing and alarm annunciation.  Controls are mounted either in a free standing or wall-mounted enclosure, depending on the size of the system.   Remote monitoring and data-logging via computer is a popular option.

Contact a Keith specialist to review your specific needs and explore equipment alternatives.