What are the key features of a multiple hearth furnace?
A multiple hearth furnace features a series of vertically stacked hearths that create separate processing zones within one compact unit. Material moves continuously from hearth to hearth using a rotating center shaft, rabble arms, and teeth, allowing precise control over temperature, atmosphere, and residence time. Key benefits include efficient thermal processing, high production capacity, a relatively small footprint, low maintenance requirements, and the ability to handle processes such as drying, calcining, oxidation, and reduction.
Learn more about the design, operation, and benefits in our Multiple Hearth Furnace 101 guide.
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