石炭中ホウ素の分布と化学形態に関する研究 Study on Boron Distribution and Chemical Form in Coal

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著者

    • 神原 信志 KAMBARA Shinji
    • 岐阜大学大学院工学研究科 環境エネルギーシステム専攻 Gifu University, Graduate School of Engineering, ERES
    • 守富 寛 MORITOMI Hiroshi
    • 岐阜大学大学院工学研究科 環境エネルギーシステム専攻 Gifu University, Graduate School of Engineering, ERES

抄録

To clear chemical forms of boron in coals and its origin, specific gravity separation tests for 4 coal samples were performed, and the boron concentration in each sample was measured. The boron concentration in coal has a high positive correlation with the vitrinite content in coal. Other maceral, exinite containing a large amount of resinite, indicates extremely low boron concentration. It is found that the boron concentration in coal decreases with increase of resinite content. In minerals such as quartz, kaolinite, montmollironite, illite, dolomite, and calcite, illite contains the highest concentration of boron. However, the boron concentration of illite does not affect on that of coal, because illite content in coals is very little (bellow about 1%). Since the boron concentration in minerals is low, consequently, it is difficult to remove boron in coal by the deashing operation. The origin and the chemical form of boron are discussed. It is seemed that boron in coal is consisted by water-soluble compounds and water-insoluble compounds. As the water-soluble compound, it is estimated some compounds such as boric acid and borate originated from immersion of seawater or ground water and biogenic fixation by plants. The water-insoluble compounds will probably borosilicate originated from flowing into sedimentary layer with ground water or seawater.

収録刊行物

  • 資源と素材 : 資源・素材学会誌  

    資源と素材 : 資源・素材学会誌 122(10), 497-503, 2006-11-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10018402115
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    8596171
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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