温度70から110℃における硫酸溶液へのナトリウムジャロサイトの溶解度 Solubility of Sodium Jarosite in Sulphuric Acid Solution at Temperature Range of 70 to 110 ℃

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An appropriate amount of sodium hydroxide solution was added into a ferric sulphate solution kept at a temperature of approximately 90 °C in order to have the resultant solution ajusted pH of about 2.0. The solution was maintained at this temperature for 240 hours kept agitated, and the hydrolysis reaction was allowed to be made. The hydrolysis product was single phase and it was estimated to be sodium jarosite-type compound of Nax(H3O)1-x[Fe3(SO4)2(OH)6] in which H3O is being combined in the form of the solid solution. Since it was conceived that (H3O)[Fe3(SO4)2(OH)6] was possible to dissolve easily into a high temperature sulphuric acid solution, a 75 g of the compound thus obtained was added into the solution containing sulphuric acid of 50 g/l kept at a temperature of approximately 90 °C. After the extracting treatment of the compound for 48 hours, sodium jarosite was obtained in the close to pure form containing the decreased amount of H3O[Fe3(SO4)2(OH)6] . The solubility measurements of sodium jarosite prepared by the above procedure in sulphuric acid solution of various concentrations were carried out at temperatures of 70, 80, 90, 100 and 110 °C.The results obtained were as follows:1. with the individual temperatures, the ferric ion concentration increased with increasing the sulphuric acid concentration in the solution.2. The concentration of the ferric ion dissolved into a sulphuric acid solution with the same concentration decreased with increasing temperature.3. The relationship between the sulphuric acid concentration and the ferric ion concentration at temperatures of 70, 80, 90, 100, and 110 °C is expressed with the empirical formulas.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(2), 111-120, 1998-02-25

    The Mining and Materials Processing Institute of Japan

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  • 温度70から110℃における硫酸溶液へのゲ-サイトの溶解度

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  • NII論文ID(NAID)
    10002467147
  • 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
    4424599
  • 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
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