Abstract: Discharge cone assembly adapted to be mounted inside a rotary grinding mill or the like is disclosed, in the preferred embodiment, including first and second holders, first and second wearable inserts, first and second cover plates, a wearable nosepiece, and first and second securing plates. The rotary grinding mill includes discharge assemblies having discharge chambers. The ground material from the mill flows into the discharge chambers through grates formed in the discharge assemblies. The holders are permanently mounted in the mill for receiving the wearable inserts. The preferred inserts are captured within the holders by the cover plates and are in ground material communication with the discharge chambers of the discharge assemblies. The nosepiece is in ground material communication with the first and second inserts and provides a unitary outlet therefore.

Abstract: Replaceable liner for the discharge assembly of a rotary grinding mill or the like is disclosed, in the preferred embodiment, as including first and second, self-supporting box members. The first box member includes closed sides, bottom, and second end, and includes an open top and first end. The second box member includes closed sides, top, and bottom, and includes open ends. When the grate is removed from the first discharge casting, the second box member can be inserted within the first discharge casting and moved into the second and third discharge castings. Then the first box member can be placed within the first discharge casting. Thus, when the grate is attached to the first discharge casting, the first and second box members will be captured within the first and second discharge castings. Reinforcing members are embedded in the box members for retaining their shape.