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RFB - Rotating Fluidized Bed Roaster
The RFB is a batch roaster. The complete system consists of a roasting and cooling section, both operate separately from each other. The main aggregates - the roasting and cooling chamber - are geometrically of identical shape. It is the shape of the chambers which leads to what is described as a rotating fluidized bed. The bottom of the chambers are differently perforated plates through which the heating or cooling medium enters the chambers forming a fludized bed with the coffee beans. The coffee batch is lifted and box-like conveyed from one side of the chamber to the other where it slides back to the borrom plate thus rotating around an imaginary axel.

RFB in action
RFB Flow Diagram

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