Spherical agglomeration used as a separation method is
based on differences in surface chemistry. Agitating the
particles in a liquid suspension and adding a second immiscible
liquid to act as a binding agent forms the agglomerates.
If there is a mixture of solid substances present and only one
is wetted by the liquid, then virtually pure agglomerates of
that solid can be produced at high recovery and with a high
degree of selectively.