... without shrinking hole, avoid the loss of glass products.3.Fine erosion stability of glass liquid, high alkali corrosion resistance. ... life. Application:1.Kiln crown, hanging screen, rangette, roof parts of the glass furnace.2.Firing combustion chamber, channel, paving, and ... 90>90Softening temperature under load(T0.6,°C )>1650>1600Resistance of glass liquid erosion(soda-silica glass,1300°C×24hr) ...