(under subclass 165) Processes which include some step to
prevent the solids in the gravitating bed from becoming nonuniformly distributed as to particle size over the horizontal cross-section of the bed.
(1) Note. The technique provided for in this subclass prevents sizing of the solids as might occur when solids are discharged onto the mass from a central point and the fines tend to sift downward to form a pile and coarser particles roll outward across the surface of the pile. A baffling of the flow, for example, will prevent this stratification of the different size particles.
