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  • Multiple Hearth Furnace

    This furnace type has reached a very high level of sophistication based on three decades of experience in the design, installation and operation of multiple hearth furnaces. Today Polysius/RCE is market leader in the supply of these furnaces for the calcination of raw materials used for refractory applications.

    Fields of application

    Calcination of industrial minerals, e.g. magnesite, dolomite, limestone, clay.

    • Calcination of flotation concentrates and filter cakes from synthetic MgO processes.
    • Thermal treatment of ores, minerals, earths and sands.
    • Thermal treatment of residual materials. 

    The Multiple Hearth Furnace is able to process very small raw material grain sizes and allows the adjustment of an accurate temperature profile.