耐火砂：nài huǒ shā 工程： refractory sand 包括黑碳化硅和绿碳化硅，其中：黑碳化硅是以石英砂，石油焦和优质硅石为主要原料，通过电阻炉高温冶炼而成。其硬度介于刚玉和金刚石之间，机械强度高于刚玉，性脆而锋利。绿碳化硅是以石油焦和优质硅石为主要原料，添加食盐作为添加剂，通过电阻炉高温冶炼而成。其硬度介于刚玉和金刚石之间，机械强度高于刚玉。
本文利用高岭土、石英砂、耐火材料废料、钾长石和碳酸钡为原料制备出了一种性能良好的耐酸砖。
The acidproof bricks with high performances were produced by using kaolin, quartz sand, refractory waste, K-feldspar and barium carbonate.
熔化合金钢和高铬合金铸铁等材质，已取得与人工石英砂粉相当的使用效果，显示出优良的抗侵蚀性能，是一种优良的廉价耐火材料。
Application results were equivalent to that of artificial silica flour, It exhibited good erosion resistance, and to be a good cheap refractory material.
白刚玉段砂、粒度砂、细粉、微粉在耐火材料、磨料磨具等不同行业具有广泛的用途。
White fused alumina products including section sand, grain-size sand; fine powder and micro powder are widely used in refractories, abrasives and other industries.
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