高温におけるＡｌ２（ＳＯ４）３溶液の加水分解ならびにＦｅ２（ＳＯ４）３溶液の加水分解に及ぼすＡｌ２（ＳＯ４）３の影響　　高温におけるＦｅ２（ＳＯ４）３溶液の加水分解に関する湿式冶金学的研究　（第５報）

DOI Web Site 参考文献15件
  • 佐々木 金一
    正会員　工博　秋田大学教授　工学資源学部材料工学科
  • 越智 俊一
    正会員　古河機械金属（株）金属本部足尾事業所技術課（元秋田大学大学院鉱山学研究科冶金学専攻）
  • 渡部 充
    工博　元秋田大学教授　工学資源学部材料工学科

書誌事項

タイトル別名
  • Hydrolysis Reaction of Aluminium Sulphate Solutions and Effect of Addition of Aluminium Sulphate on Hydrolysis Reaction of Ferric Sulphate Solutions at Elevated Temperatures. Hydrometallurgical studies on hydrolysis reaction of ferric sulphate solutions at elevated temperatures. (5th Report).
  • コウオン ニ オケル Al2 SO4 3 ヨウエキ ノ カスイ ブンカイ ナラビニ Fe2 SO4 3 ヨウエキ ノ カスイ ブンカイ ニ オヨボス Al2 SO4 3 ノ エイキョウ コウオン ニ オケル Fe2 SO4 3 ヨウエキ ノ カスイ ブンカイ ニ カンスル シッシキ ヤキンガクテキ ケンキュウ ダイ5ホウ

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抄録

Hydrolysis reaction of aluminium sulphate solutions of various concentrations and hydrolysis reaction of ferric sulphate solutions of various concentrations with the addition of aluminium sulphate have been investigated in an autoclave at 185゜C and 200゜C. The results indicate that Al3+ ion concentration increases with an increase in the sulphuric acid concentration in the solutiions when the hydrolysis reaction of the aluminium sulphate solutions proceeds to completion. Al3+ ion concentration is higher at 185゜C than 200゜C at the same sulphuric acid concentration in the solutions. A plot of logarithmic value of Al3+ ion concentration against logarithmic value of the sulphuric acid concentration shows a linear relationship which can be expressed by an empirical formula. The H2O corners of the equilibrium diagrams of Al2O3 - SO3-H2O system at 185゜C and 200゜C are established from the experimental data. Fe2O3 precipitates at lower sulphuric acid concentration region and Fe (OH) SO4 precipitates at higher sulphuric acid concentration region when the hydrolysis reaction of the ferric sulphate solutions proceeds to completion. However, the sulphuric acid concentration at which Fe2O3 begins to precipitate with the addition of aluminium sulphate is lower than without aluminium sulphate. Fe3+ ion concentration increases with an increse of the sulphuric acid concentration, and with an increase of the amount of aluminium sulphate at the same sulphuric acid concentration. Moreover, Fe3+ ion concentration is higher at 185゜C than 200゜C. A plot of logarithmic value of Fe3+ ion concentration against logarithmic value of the sulphuric acid concentration in the region where Fe2O3 precipitates, or in the region where Fe (OH) SO4 precipitates can be expressed by an empirical formula. The H2O corners of the equilibrium diagrams of Fe2O3-SO3-H2O system in the presence of aluminium sulphate at 185゜C and 200゜C are established from the experimental data.

収録刊行物

  • 資源と素材

    資源と素材 115 (10), 763-773, 1999

    一般社団法人 資源・素材学会

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