REFRACTORY PRODUCT FOR A CHECKERWORK ELEMENT OF A GLASS FURNACE REGENERATOR

摘要

A smelted and cast refractory product has the following overall average chemical composition, as a percentage by weight on the basis of the oxides: (a) 0.4 less than MgO less than 2.5; (b) 0.2 less than SiO 2 less than 2.0; (c) CaO less than 0.4; (d) impurities less than 0.5; and (e) remainder Al 2O 3.