Corrosion And Refractory Selection For The Throat Of The Glass Furnace

The throat is one of the important parts in the glass furnaces. All glass liquid flows through the throat into the work end. It is used in almost all glass furnaces to improve the quality of glass. 

In the melting process, since the unmelted sand and dross have lower density, they are suspended in the upper layer of the glass liquid. The throat can prevent the unmelted sand and dross into the work end and sort the glass liquid. 

 

The throat can increase the use area of the melting zone and improve the melting capacity of the furnace. It can also reduce or avoid the reflux of glass liquid from the cooling zone to melting zone. It can also reduce the temperature of the glass liquid. By adjusting its location, size and cooling degree, the temperature can be adjusted. 

 

The flowing speed in the throat is the biggest and the convection is serious, thus the throat bricks, especially the cover tiles, are subjected to severe wear and corrosion. Under the cover tiles is glass liquid. Bubbles cause vertical undercutting corrosion. Therefore, cover tiles are easily damaged and one of the weakest points of the furnaces. Fused cast AZS 41# WS is used here. In borosilicate glass furnaces, fused silica brick is used. 

 

Fused cast AZS 41# WS has compact microstructure and low blistering potential. Since the better corrosion resistance to molten glass. Since the shrinkage cavity part is cut, it has best corrosion resistance to molten glass among the AZS blocks. 

 

Zhengzhou Sunrise is a refractory material supplier from China, offering high quality refractory materials for glass furnaces, including fused cast AZS block, fused cast alumina block, fused cast high zirconia block, mullite brick, zircon brick, alumina bubble brick, magnesia brick, sillimanite brick, corundum brick, low porosity fireclay brick, high alumina brick, all kinds of glass furnace ramming masses, etc..