Common Ramming Mass for Glass Kiln

Common Ramming mass for glass kiln？
1）zircon sand ramming mass
Composition(quality/%) : ZrO2 62%、SO2 32%、Al2O3 2%、Fe2O3 0.5%. Bulk density＞3g/cm3, Refractoriness＞1790℃, Max granularity 0.5mm. aluminium dihydrogen phosphate as adhesive ，high strength， high temperature resistant，air drying and easy to harden，can not be stored for a long time, corrosive to skin and difficult to use.
2）fused alumina zirconia ramming mass(French brand is ERSOL）
Waste of AZS brick as material  and also used as sealant, material-mud.
3）Low shrink AZSC ramming mass
It is produced by adding chrome containing material to basic AZS material. Bulk density:＞2.9g/cm3, corrosion resistance to glass better than ramming mass above .