Effect of adding moisture and wettability on granulation of iron ore

Takayuki Maeda, Chieko Fukumoto, Toshihide Matsumura, Koki Nishioka, Masakata Shimizu

    Research output: Contribution to journalArticlepeer-review

    31 Citations (Scopus)

    Abstract

    As the fundamental study for determining the optimum moisture content for granulated particle, the contact angle between iron oxide and water was measured by the sessile drop method using reagent hematite samples that have different porosity and five kinds of iron ores. The granulation experiment was conducted by using five kinds of iron ores and the effects of adding moisture and wettability on the granulation property were investigated. The contact angle of reagent hematite sample and iron ore became large as the surface roughens becomes large. Therefore, the wettability between iron oxide and water greatly influenced the surface roughness of iron oxide. When iron ore with high wettability was used for nuclei particles, it can be granulated under all conditions in this study. On the other hand, when iron ore with low wettability was used for the nuclei particles, it was remained some fine iron ore particles without granulating. Therefore, when iron ore with low wettability was used for the nuclei particles, it was necessary to increase the adding moisture in order to improve the granulation property of fine particles. The fracture strength increased with decreasing the contact angle without regard to the kind of iron ore using for nuclei particles. Consequently, It was necessary to increase the adding moisture in order to improve the fracture strength.

    Original languageEnglish
    Pages (from-to)477-484
    Number of pages8
    Journalisij international
    Volume45
    Issue number4
    DOIs
    Publication statusPublished - 2005

    All Science Journal Classification (ASJC) codes

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

    Fingerprint

    Dive into the research topics of 'Effect of adding moisture and wettability on granulation of iron ore'. Together they form a unique fingerprint.

    Cite this