A Study on the Oxidation Reaction of Iron (II) Sulfate by Dry and Wet Process

황산제1철의 乾濕式에 의한 酸化反應에 對한 硏究

  • Soo Duk Suhl (Department of Industrial Chemistry, College of Engineering, Dong A University) ;
  • Joo Kyung Sung (Department of Industrial Chemistry, College of Engineering, Dong A University) ;
  • Yong Kil Whang (Department of Industrial Chemistry, College of Engineering, Dong A University)
  • 설수덕 (동아대학교 공과대학 공업화학과) ;
  • 성주경 (동아대학교 공과대학 공업화학과) ;
  • 황용길 (동아대학교 공과대학 공업화학과)
  • Published : 1977.04.30

Abstract

A study on the formation of black iron oxide was carried in differents of Fe(III), Fe(II) ion in the aqueous solution that iron(II) sulfate was calcined under various temperature and leached in water. The results obtained was follows; (1) It was found that the sample calcined in an electric muffle furnace maintained at $500^{\circ}C$ for 1 hour and leached in water was equivalent mole (Fe(III) /Fe(II) = 1) in 20% aqueous solution. (2) When the above mentioned solution was hydrolyzed at pH range of 7 to 8 for 2 hours at $100^{\circ}C$, 93% and over of iron was recovered in the form of ${\alpha}-Fe_3O_4$ with a black colour.

황산제 1철을 전기로내에서 하소(瑕燒)시키고, 물에 침출시켜 몰비(Fe(III)/Fe(II))를 변화시킨 각각의 수용액을 가수분해하여 산화철 생성반응을 검토하였다. 하소온도가 증가함에 따라 소광(燒鑛)중의 Fe(III)/Fe(II)비가 증가하였고, $500^{\circ}C$에서 1시간 가량 하소시킨 시료가 등몰이 됨을 알았다. 등몰로 형성된 시료를 20% 수용액으로 만든 다음 pH 7 ∼ 8로 조절하고 반응온도 $100^{\circ}C$, 가압솥내 압력 3기압 및 반응시간 2시간으로 하여 가수분해 하였더니 진한흑색의 산화철이 93% 이상 생성되었다.

Keywords

References

  1. 特許公報 粉末磁性酸化銑の裝製适迲 병河守
  2. 特許公報 硫酸第 1 銖, 硫酸第 2 銖, 硫酸アルミニウム及ぴ遊離硫酸を含む鉉工業廢涉の列理法 舛尾開藏
  3. I. E. C. v.53 W. A. Lloyd(et al.)
  4. A. I. ch. E. J. v.8 N. J. Themelis(et al.)
  5. Tetsu-to-hangane v.58 M. Ozawa(et al.)
  6. 特許公報 ガストシデジレアヒレカイマソ, $Fe_2O_3{\cdot}nH_2O$粉末を${\gamma}-Fe_2O_3$ に連繞的に轉換する方法
  7. 대한화학회지 v.19 成周廳;薛秀德;黃龍吉
  8. 曰本土水田土壤肥料字維誌 v.32 no.2 水田土壤中珽紋について 岩佐安;喝下寬
  9. J. Soil. Sci. v.10 R. M. Taylor
  10. Gmelin's Handb. anorg. Chem., System no. 59 (Iron)
  11. Gmelin's Handb. anorg. Chem., System no. 59 (Iron)
  12. Ullmans Encyklopadie der Technischen Chemie v.6
  13. Inorg. Syn. v.1 Baudisch;Hartung
  14. 曰本土壤肥料字維誌 v.32 no.6 人工の非晶質第二銖酸化物の色とその晶結化 小島道也