To provide an apparatus which desorbs deposits adhered onto particulates effectively by the use of superheated steam.

The apparatus for desorption of deposits adhered onto particulates has a particulate holding container for sealing of particulates having a large number of holes which particulates cannot pass through, a sealed oven sealing the particulate holding container in a nearly sealed state, a rotation supporting section supporting the particulate holding container in a rotatable way, a rotation driving means of rotating the particulate holding container, and a steam introduction means of introducing superheated steam into the closed oven.

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