Common using quantity of fused zirconium corundum bricks in glass furnaces

Common using quantity of fused zirconium corundum bricks in glass furnaces

How to use zirconium corundum brick? This is an issue of great concern to people in the industry. Electric fused bricks have excellent resistance to the erosion of glass liquid and alkali steam erosion, and are the furnace building materials for key parts of the furnace. Commonly used varieties include AI2O3–ZrO2–SiO2 series fused zirconium corundum bricks containing 33%, 36%, and 41% ZrO2 and AI2O3 series α, β alumina bricks and β alumina bricks. There are two melting processes: oxidation method and reduction method. The reduction method has been gradually eliminated in our country.

The main casting methods for fused zirconium corundum bricks include ordinary casting (PT), tilt casting (QX), quasi-shrinkage-free casting (ZWS) and shrinkage-free casting (WS). In addition to the general physical and chemical performance indicators of this type of fused bricks, their important performance indicators include resistance to glass liquid erosion, bubble precipitation rate and glass phase seepage temperature. Fused zirconium AZS bricks comply with the technical requirements specified in the current standards of JC493 and JC494.

The following table summarizes several common fused zirconium corundum bricks and their usage in different furnaces:

The above data and content are for reference only.