カルシウム系廃棄物からの炭酸化抽出液の生成と脱硫特性 Calcium Extraction from Calcium-Based Waste by Carbonation Reaction and Its SO_2 Absorption Characteristics

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For the purpose of recovering calcium resource, an attempt was made to extract Ca<SUP>2+</SUP> by carbonation reaction from the calcium-based wastes such as limestone slurry, concrete waste and steel slag, and then the desulfurization characteristics of the Ca<SUP>2+</SUP> extracts obtained from these calcium-based wastes were investigated. The Ca<SUP>2+</SUP> extraction experiment was carried out in a hermetic vessel under the CO<SUB>2</SUB> pressure range of 0.10-2.00 MPa at the temperature range of 280-333 K.<BR>As a result, it was found that Ca<SUP>2+</SUP> extraction behaviors of limestone sludge and concrete waste were similar to that of limestone. However, the rate of Ca<SUP>2+</SUP> extraction from steel slag was about one-third of those from the other calcium-based wastes. By introducing SO<SUB>2</SUB> gas (1000 cm<SUP>3</SUP>·m<SUP>-3</SUP>) into the Ca<SUP>2+</SUP> extract, it was found that SO<SUB>2</SUB> absorption performance of the Ca<SUP>2+</SUP> extract of the calcium-based waste employed was almost the same to that of limestone slurry.

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  • Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学  

    Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学 14(326), 10-16, 2007-01-01 

    The Society of Inorganic Materials, Japan

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各種コード

  • NII論文ID(NAID)
    10018284718
  • NII書誌ID(NCID)
    AA11416367
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13453769
  • NDL 記事登録ID
    8643273
  • NDL 雑誌分類
    ZP9(科学技術--化学・化学工業--無機化学・無機化学工業--セラミックス・窯業)
  • NDL 請求記号
    Z17-B79
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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