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

• 佐々木 金一

  正会員　工博　秋田大学助教授　鉱山学部物質工学科

• 大塚 健治

  正会員　エヌ·ディ·ケー加工センター（株） （元　秋田大学助手　鉱山学部）

• 渡部 充

  工博　元　秋田大学教授　鉱山学部物質工学科

• 戸沢 一光

  正会員　工博　元　東北大学教授

書誌事項

タイトル別名

• Solubility of Sodium Jarosite in Sulphuric Acid Solution at Temperature Range of 70 to 110 .DEG.C..
• オンド 70 カラ 110ドC ニ オケル リュウサン ヨウエキ エ ノ ナト

抄録

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

  資源と素材 114 (2), 111-120, 1998

  一般社団法人 資源・素材学会

キーワード

• Solubility of Sodium Jarosite
• Hydrolysis
• Iron Removal

詳細情報

• CRID: 1390001206017116032
• NII論文ID: 10002467147
• NII書誌ID: AN10062646
• DOI: 10.2473/shigentosozai.114.111
• COI: 1:CAS:528:DyaK1cXhvFant7g%3D
• ISSN: 18806244
• ISSN: 09161740
• NDL書誌ID: 4424599
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4424599
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可