so as to loosen them, e.g. to form a fluidised bed

Drying solid materials or objects by processes involving the application of heat > by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air > the gas or vapour flowing through the materials or objects to be dried > so as to loosen them, e.g. to form a fluidised bed

Drying solid materials or objects by processes involving the application of heat (in specific machines or apparatus F26B9/00 - F26B19/00) > by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air > the gas or vapour flowing through the materials or objects to be dried (F26B3/14 takes precedence) > so as to loosen them, e.g. to form a fluidised bed