Jig pulsion mechanism

A centrifugal jig comprising a container mounted for rotation about its longitudinal axis, the container having an axial region and a peripheral region which includes a plurality of hutch chambers each separated from the axial region by ragging, means for rotating said container, means for introducing feed material to the axial region, and dilating means for repetitively dilating the ragging by pulsating fluid in different ones of said hutch chambers at different times.

A method of separating components of a feed material on the basis of specific gravity in a container of a centrifugal jig which has an axial region and a peripheral region which includes at least one hutch chamber separated from the axial region by ragging, comprising the steps of rotating the container about its longitudinal axis, introducing the feed material to the axial region and repetitively dilating the ragging in a circumferential sequence.

A method of separating components of a feed material on the basis of specific gravity in a container of a centrifugal jig which has an axial region and a peripheral region which includes a plurality of hutch chambers each separated from the axial region by ragging, comprising the steps of rotating the container about its longitudinal axis, introducing the feed material to the axial region, and repetitively dilating the ragging by pulsating fluid in different ones of said hutch chambers at different times.