Centrifugal separator with fluid injection openings formed in a separate strip insert

The centrifuge bowl according to claim 23 wherein there are at least two recess insert members arranged at axially spaced locations where one defines the lower side wall of a recess and a second defines the upper side wall of a recess.

The centrifuge bowl according claim 23 wherein the recess insert member is shaped to define an upper side wall of one recess and a lower wall of a next adjacent recess with a slurry engaging surface of a rib therebetween.

The centrifuge bowl according to claim 23 wherein the recess insert member includes a layer of a material attached thereto at the surface which is of increased wear resistance relative to a main material from which the recess insert member is formed.

The centrifuge bowl claim 23 wherein the peripheral wall of the bowl has attached thereto for the or each recess insert member a mounting member attached to the wall and extending inwardly from the wall for engaging an abutment member on the recess insert member.

The replacement insert member according to claim 23 wherein the liquid supply of the fluidizing liquid injection system for fluidizing the materials in the respective recess includes a channel defined between an exterior of the at least one recess insert member and an interior of the peripheral wall.

The centrifuge bowl according to claim 23 wherein the face portion includes a side portion arranged to be located radially inwardly of a rib on a respective side of the recess and at least partly covering the rib so as to prevent the slurry from contacting the rib and causing wear to the rib.

A centrifuge bowl for use in an apparatus for separating intermixed particulate materials of different specific gravity in a slurry where the apparatus includes a feed duct for feeding the slurry into the bowl during rotation of the bowl so that during rotation of the bowl the intermixed particulate materials flow over a peripheral wall of the bowl for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth and a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth, the bowl comprising

• a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
• the peripheral wall of the bowl having attached thereto a plurality of axially spaced annular bands each arranged for mounting thereon an abutment member of a respective one of a plurality of recess insert members, the abutment element and the annular band being arranged such that the recess insert member is readily removable and replaceable.