Effect of Temperature on Equilibria in Synthetic Sulfuric Acid Leaching Solution of Zinc Calcine

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In order to simulate the leaching of zinc calcine by sulfuric acid solutions, we prepared synthetic solutions with the composition ZnSO<SUB>4</SUB>-Fe<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>-Na<SUB>2</SUB>SO<SUB>4</SUB>-H<SUB>2</SUB>SO<SUB>4</SUB>-NaOH-H<SUB>2</SUB>O and measured the solution pH at various temperatures. The effect of temperature on the ionic equilibria of these solutions was analyzed by considering chemical equilibria, mass balance and charge balance equations. The activity coefficients of solutes and the activity of water were calculated by using the Pitzer equation. The mole fractions of iron species were greatly affected by the solution temperature and the concentration of Fe<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>. In the experimental ranges of ionic strength of solution up to 9 m, the pH values calculated in this study agreed well with those measured.

収録刊行物

  • Materials transactions

    Materials transactions 45(5), 1748-1753, 2004-05-20

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10013072017
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6951662
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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