There have silica mortar , zirconia ramming mass and hot patching refractory for glass furnace repair. Specification. Unshaped Refractories For Glass Furnace: Silica mortar: Zirconia ramming mass: Hot patching refractory: LBGN-94: LBGN-95: LBGN-96: Although it varies according to the capacity and heating model of the glass melting furnace, the furnace is generally heated up to 800 degrees Celsius under the supervision of our expert personnel during the heating up process. After reaching 800 degrees, dilatation, that is, the closure of the expansion gaps, takes place.Jan 09, 1991 · a process of forming a porous refractory mass on a surface is characterized in that an oxidizing gas is projected against that surface together with a powder mixture which Refractories are used to line furnaces and acidic linings. They are used as kiln lining materials and as insulation to withstand high temperatures. Alpha-alumina, silicon dioxide bricks, aluminium oxide bricks, calcined alumina, white fused alumina, brown fused alumina, and other refractory materials are also used.