Refractory plate assembly for a sliding closure unit

摘要

A refractory plate assembly for use in a sliding closure unit includes a sheet metal shell including a base portion and an integral peripheral portion. A refractory plate member having a sliding surface is positioned within the shell. Positioning or support structure locates the plate member within the interior of the shell, and fiber or granular thermal insulation material is positioned within the shell between the base portion thereof and the refractory plate member.