| 摘要 |
In the present invention there is disclosed a refractory periclase-forsterite-spinel building material formed by a mixture containing 2 to 11 percent by weight of Ali2Oi3, further 2 to 13 percent by weight of SiOi2 and the balance being MgO, whereby this mixture is defined by a mutual ratio of the two basic materials ensuring a desired composition of the mixture, and namely 5 to 40 percent by weight of a sintered material containing 19 to 27 percent by weight of Ali2Oi3, 22 to 32 percent by weight of SiOi2, 44 to 55 percent by weight of MgO and 60 to 95 percent by weight of sintered magnesia of extreme purity containing at least 97 percent by weight of MgO. |
