Evaluation of flotation results using rubidium ion exchange

Hidekazu Fujimoto, Masahiko Matsukata, Korekazu Ueyama

    研究成果: Article

    1 引用 (Scopus)

    抄録

    Coal particles contain oxygen functional groups such as hydroxyl, carbonyl, and carboxyl, and mineral matters that contribute surface hydrophilicity. The occurrence of them varies considerably from coal to coal, hence the characteristics of column flotation changes from coal to coal. We expected that the characteristics of column flotation could be simply evaluated by using the area fraction of oxygen functional group sites on the exterior surface of the coal particles. In this work, we conducted column flotation for Shanxi (anthracite), Tyanfu (bituminous), Blair Athol (bituminous), Datong (bituminous), and Illinois (brown coal). The order of carbonaceous materials recovery was found to be Tyanfu > Shanxi > Blair Athol > Datong > Illinois. We also evaluated the area fraction of hydroxyl group on the exterior surface of the coal particles, αex-OH, and that in the coal particles, αin-OH. For Datong coal, the value of αex-OH was larger than that of αex-OH. It means that Datong coal was slightly oxidized. The order of carbonaceous materials recovery was inconsistent with that of αex-OH for the three kinds of bituminous coal. For Shanxi anthracite coal, the notability is evaluated by considering the wettability of the hydrophobic sites as well as the hydrophilic sites.

    元の言語English
    ページ(範囲)204-210
    ページ数7
    ジャーナルJournal of Chemical Engineering of Japan
    32
    発行部数2
    出版物ステータスPublished - 1999

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    Rubidium
    Coal
    Flotation
    Ion exchange
    Anthracite
    Functional groups
    Hydroxyl Radical
    Recovery
    Oxygen
    Bituminous coal
    Hydrophilicity
    Lignite
    Wetting
    Minerals

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    これを引用

    Evaluation of flotation results using rubidium ion exchange. / Fujimoto, Hidekazu; Matsukata, Masahiko; Ueyama, Korekazu.

    :: Journal of Chemical Engineering of Japan, 巻 32, 番号 2, 1999, p. 204-210.

    研究成果: Article

    Fujimoto, Hidekazu ; Matsukata, Masahiko ; Ueyama, Korekazu. / Evaluation of flotation results using rubidium ion exchange. :: Journal of Chemical Engineering of Japan. 1999 ; 巻 32, 番号 2. pp. 204-210.
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