苦土橄欖岩電融体の組織に及ぼす還元剤の影響 : 苦土橄欖岩電融体の組織と性質に関する基礎的研究(第1報)

概要

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The refractories made from dunite shows usually the complicated change of microstructure during the furnace campaign due to the change of temperature and atmosphere. This may lead to the complete collaps of the whole structure, and is the very reason which has checked its practical use.R. L. Stone and also Ikenoue suggest that the iron, existing in the state of solid solution in the mineral, would be the main source of the occurence of such damage. The author has carried out the investigations for the purpose of improving the instability by taking away the iron through the electric melting under reducing condition.The present paper concerns the observation of the author on the process of remove of iron and silica by the electromelting of dunite from Fukushima prefecture. Especially on the influence of the reducing agent (carbon powder and the powder of pig iron) on the structure of electro-molten dunite is discussed. It was confirmed that the size of forsterite crystals in the mass obtained by electric melting reduced their size with the increasing amount of the reducing agent.Above all it would be worthy of noted that the separation of periclase crystals was observed in the mass reduced by iron, and the probable existence of close relation between the compositions of the dust and the ingot obtained by electro-melting was also noticed.
社団法人日本セラミックス協会の論文
1960-10-01