安定化ドロマイド・クリンカーの鉱物組成ならびに性質について

概要

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This is a report on an investigation about the chemical composition, mineralogical structure and physical properties of the stabilized dolomite clinkers which are to be used as basic refractories. SiO_2, Fe_2O_3, Al_2O_3 are added to dolomite ore as stabilizers and burnt at 1520℃. These materials are analysed by a chemical and mineralogical method. These stable clinkers consist of periclase and tricalcium silicate, and a dicalcium ferrite is produced with some amount of Fe_2O_3, Al_2O_3 also produces tricalcium aluminate. Both dicalcium ferrite and tricalcium aluminate have a low melting point and accelerate sintering properties. In consequence of this effect, apparent porosity decreases and compressive strength at room temperature increases. As the compressive strength extremely decreases above 1200℃, they are not suited for refractories. Material 5~9, 12 in Table 4 have excellent properties and suited for long storage. We suppose this effect is caused by existing tricalcium silicate and periclase.
社団法人日本材料学会の論文
1962-02-15