Formation rate of calcium ferrite melt focusing on SiO2 and Al2O3 component

Takayuki Maeda, Koki Nishioka, Kunihiko Nakashima, Masakata Shimizu

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    The effect of the particle size of hematite on the formation rate of calcium ferrite melt and the dissolution rate of solid hematite into molten calcium ferrite were investigated. Without regard to the particle size of hematite, the addition of SiO2 was more effective than the addition of Al2O3 for increasing the melting rate and reducing the melt formation temperature in calcium ferrite system. On the other hand, the addition of Al2O3 was more effective than the addition of SiO2 for increasing the dissolution rate of solid hematite into the generated molten ternary calcium ferrite. The amount of dissolved hematite into molten calcium ferrite increased linearly with increasing the immersion time. The dissolution rate of solid hematite into molten calcium ferrite was mostly determined by Δ(mol%Fe2O3) that was considered to be the driving force of the dissolution and the effect of the revolution speed on the amount of dissolved hematite can be negligible. Therefore, the dissolution reaction of solid hematite at the reaction interface was the rate-controlling step under the condition of this study.

    Original languageEnglish
    Pages (from-to)2046-2051
    Number of pages6
    Journalisij international
    Volume44
    Issue number12
    DOIs
    Publication statusPublished - 2004

    All Science Journal Classification (ASJC) codes

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

    Fingerprint

    Dive into the research topics of 'Formation rate of calcium ferrite melt focusing on SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> component'. Together they form a unique fingerprint.

    Cite this