Patent ID: 8919566
Filing Date: 2014-12-30
Classification: B03C,B07C

Abstract:
1. A method of sorting particulate matter comprising: creating an unconstrained monolayer feed stream of particulate matter moving with an initial trajectory in a gaseous medium, wherein the particulate matter comprises particles having an average maximum size to average minimum size ratio between 2:1 to 4:1; subjecting the monolayer feed stream while in the gaseous medium to a constant in time magnetic field of sufficient strength to influence the trajectory of at least some particles in the feed stream on the basis of the magnetic susceptibility of the particles to cause a spread of particle trajectories from the trajectory, wherein the magnetic field is arranged to influence the trajectory of the at least some particles in a manner to deflect the at least some particles upwardly with respect to the initial trajectory; and, sorting of the particles on the basis of their trajectories.