在使用刚玉骨料的试验中，采用高铁棕刚玉的试样的体积密度和强度均最高。
In the experiment using corundum aggregate, the specimens prepared with high ferric oxide brown corundum aggregate has the highest bulk density and strength.
铁沟料是以铝碳复合材料为主，通过添加刚玉、碳化硅等不同类型碳质原料，使其具有抗侵蚀及冲刷等优点的高级耐火材料。
Material for iron runner is primarily based on aluminum-carbon compound material. It is a high-grade refractory with good resistance to corrosion and scouring by addition of boule and silicon carbide.
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