Abstract: The present invention provides an apparatus useful in a cast lining process. In the cast lining process, a mandrel is positioned inside a vessel to be lined, so as to form a casting space, and a castable is delivered into the casting space to produce the cast lining. The novel apparatus of the present invention includes a rotatable and horizontally movable belt conveyor arranged above the casting space. The preferred apparatus also includes a contractable and expandable mandrel. Also provided by the present invention is an improved cast lining process.