The molybdenum wall is used in basins of melting tanks in the area after the hot spot to separate the melting part from the refining part and thus prevent a short-circuit flow. It acts as a flow barrier, forcing the bottom glass to rise into the hot area of the hot spot, where it dissolves the last relics from the batch to refine bubbles in the glass. This ensures a better quality of the molten glass with a comparable energy input and/or a higher melting capacity with the same glass quality.

The Mo-Wall is characterised by the fact that its function remains unrestricted until the end of the furnace journey. It is suitable for all standard glass types and all fossil-heated furnaces with and without boosting.