Abstract: A classifying fluid bed granulator includes a granulation chamber including a fluidizing air chamber (7) with a bed floor (10), a ceiling (3c), an end wall (3d), and a feed inlet (5), a seed inlet (6), an air outlet (4) defined by walls (3a, 3b) and an outlet (9) for produced granules. The granulation chamber is divided into an agglomeration and seed control section (1) and a granulation and classification section (2), and the section (2) includes one or more consecutive compartments having an asymmetric design.

Abstract: In order to separate a carbon-containing fraction as completely as possible from a residue, for example a pyrolysis residue, a combustible constituent is first separated from a non-combustible constituent. A carbon-containing light fraction is subsequently separated from a small-fragment fraction of the non-combustible constituent. For this purpose, in a preferred embodiment, a combination of a facility for the separation of wire with a heavy-fragment separator following the latter is provided for a continuous separation operation. The carbon-containing fraction thus obtained is preferably supplied for further utilization to a combustion chamber of a pyrolysis plant.

Abstract: An air concentrator for dry separation of gold and other heavy minerals from alluvial deposits comprises a housing having a number of open-topped chambers arranged in a ring-like configuration and surmounted by a screen having rings thereon forming annular arms radiating from a hub sweeps over the screen beds. Air under pressure is fed sequentially and cyclically to the chambers by a rotary valve located centrally of the ring of chambers. The deposit is fed over the hub and is swept outwardly over the beds on the screen by the wiper arms, where it is fluidized by pulses of air from the subjacent chambers enabling particles of gold and heavy minerals to settle down to the bottom of the beds by gravitational stratification, and if sufficiently small, pass through the screen for collection through spigots in the bottom of the chambers.

Abstract: Fluidized particulate material in an elongated fluidizing bed is separated by means of paddles, on an endless chain running around sprockets, urging at least an upper portion of the fluidized bed towards one end of the bed to enrich that end with lighter particles and the other end with heavier particles. The particles thus separated are removed from the ends of the bed by, for example, flowing over weirs. In one embodiment only the paddles passing along the underside of the chain dip into the fluidized bed while in another embodiment the whole chain and all of the paddles are immersed in the fluidized bed.