Abstract: A process is described for separating particles based on differences in mass after the selective attachment of air bubbles to reduce the density of one or more of the components of the feed. A novel feature of this process is aeration of a hindered-bed of solids in a fluidized-bed separator to create particle/bubble agglomerates that can be separated based on the principal of gravity. This approach offers an improvement in process efficiency that cannot be achieved by other processes. Air and water are mixed in a shear device before the aerated fluidized water is introduced to the separation chamber.

Abstract: An action toy in which a spinner is provided having two wheels joined with a magnetized axle which rotates along a single flat elongated wand. The wand has a return at each end so that the spinner will rotate along a first side of the wand and then along a second side as a player moves the wand from hand to hand. A pendant may be provided attached to an extension of the axle and having a magnet at its distal end for picking up various objects adding additional play value. The wand may be provided in a variety of shapes to present an interesting path for the spinner. A ramp may be provided which is readily attachable to the wand at a return to permit the passage of the spinner off of or onto the wand.