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Ferrites - To serve a broadening array of applications, Harper offers a full range of thermal processing equipment for the calcination and sintering of hard and soft ferrite materials. We can also engineer complete systems.

Harper's versatile, indirect-heated rotary tube furnaces, using electric heating elements or fossil fuel combustion, are widely employed for calcining of soft ferrites. Design features developed over years of experience in the ferrite industry optimize retort and element life while minimizing investment requirements.

Other Harper equipment for sintering of soft ferrite materials includes split-atmosphere tunnel kilns and multi-stack periodic elevator kilns offering precise, automatic control of temperature and oxygen content in the heating chamber.

We also offer custom designed double-channel tunnel kilns and roller hearth kilns for sintering hard ferrite materials.

Harper ferrite kilns and systems are widely used for applications such as calcining and sintering materials for power, entertainment, electromagnetic interference suppression, and many newly emerging product areas. Our industry specialists assess each application and propose the optimum system.

Harper now serves the international ferrite market through offices in Europe and Asia, and a worldwide network of representatives and technical service organizations.