Influence of Distribution of Al Additive on Properties of MgO-C Refractories

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Other Title
  • MgO－C系耐火物の特性に及ぼすAl添加剤の分布の影響
  • MgO Cケイ タイカブツ ノ トクセイ ニ オヨボス Al テンカザイ ノ ブンプ ノ エイキョウ

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Description

Various kinds of Metal are added to carbon-containing refractory as antioxidant. The degree of the effect of metal is different by kind, quantity and distribution in the refractory. In this study, the most effective and ideal method of the Al distribution in the refractory was examined. As a result, when Al metals distributed among graphite grains, pore size of the refractory became smaller and its decreasing of strength was restrained after heating. Moreover, densification of the refractory was promoted because of formation of spinel crystals among the graphite grains. On the other hand, when Al grains are on the surface of MgO grains, pore size became lager and the strength decreased. From the above-mentioned results, it is desirable to distribute Al grains among graphite grains during process of mixing raw materials of the refractory.

Journal

  • Taikabutsu

    Taikabutsu 62 (7), 339-345, 2010-07-01

    The Technical Association of Refractoreies,Japan

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