Abstract Basic insulating refractories were fabricated by the pressing route using dead-burned magnesia, pure calcined alumina, expanded perlite, and calcined waste serpentine as starting raw materials in four compositions from F1 to F4. Periclase and forsterite were major phases in F1 and F2 compositions, while spinel was also detected in the XRD patterns of F3 and F4 samples. Quantitative phase analysis showed that F4 sample sintered at 1450 °C has the highest forsterite content among all other samples. On the other hand, it has lower thermal conductivity compared to F1 to F3, and even lower than aluminosilicate IFBs with the same bulk density. It is concluded that forsterite is a highly insulating material, compared to periclase, corundum, periclase-spinel, aluminosilicates, such as mullite, etc.

中文翻译：

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废蛇纹石对碱性隔热耐火材料性能的影响

摘要 以重烧氧化镁、纯煅烧氧化铝、膨胀珍珠岩和煅烧废蛇纹石为原料，按F1～F4四种成分，采用压制工艺制备碱性绝热耐火材料。方镁石和镁橄榄石是 F1 和 F2 组合物中的主要相，而在 F3 和 F4 样品的 XRD 图中也检测到尖晶石。定量相分析表明，在所有其他样品中，在 1450 °C 烧结的 F4 样品具有最高的镁橄榄石含量。另一方面，与 F1 至 F3 相比，它具有更低的热导率，甚至低于具有相同体积密度的铝硅酸盐 IFB。结论是，与方镁石、刚玉、方镁石-尖晶石、铝硅酸盐（如莫来石）等相比，镁橄榄石是一种高度绝缘的材料。