Separation of plastic particles in a fluid medium involves treating mixed plastic particles by moving the medium up and down relative to the mixed particles to be separated

摘要

Particles in a fluid medium are separated by feeding a mixture of particles into a separation chamber. The mixture of particles is treated by moving the medium up and down relative to the mixture of particles. A barrier is present above the mixture to restrain the particles. An Independent claim is also included for an apparatus for separating particles comprising (i) a separation chamber (2), having a supply opening (3) for particles to be separated, (ii) a sieve (4) provided above the supply opening for retention of particles, and (iii) a pump (5) for moving a fluid medium up and down relative to the particles to be separated.