平炉にしようされたクロマグ煉瓦のX線的研究 : 平炉にしようされた耐火物に関する研究 (第8報)

概要

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Microscopical and chemical studies on the mechanism of corrosion of chrome-magnesia refractories used in an open-hearth furnace were reported in previous papers, and the present one contains the results of X-ray studies on the constitutional minerals (spinel periclase and matrix minerals) in every zones of the burned chrome-magnesia brick from the front wall and the unburned brick from the zebra roof of basic open-hearth furnace.The lattice constants of original chromite spinel separated from the lowest temperature (unaltered) zone, magnetite spinel in the working face of the burned brick and that embeded in a silicious glass matrix in the unburned brick from zebra roof were 8.21, 8.35 and 8.40 Å respectively. This expansion of the spinel due to the variation of its chemical composition is connected with the bursting phenomenon of the brick.Augite is a predominant constitutional mineral of matrix in the hottest face, and forsterite and monticellite are principal matrix minerals in the middle zone of the brick.
社団法人日本セラミックス協会の論文
1960-01-01