Journal of Central South University

, Volume 22, Issue 10, pp 3745–3750 | Cite as

Comparison of deep desulfurization methods in alumina production process

  • Zhan-wei Liu (刘战伟)
  • Wang-xing Li (李旺兴)
  • Wen-hui Ma (马文会)
  • Zhong-lin Yin (尹中林)
  • Guo-bao Wu (武国宝)
Article
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Abstract

Several methods of deep desulfurization in alumina production process were studied, and the costs of these methods were compared. It is found that most of the S2−removed by adding sodium nitrate or hydrogen peroxide in digestion process, and in this way the effect of S2− on alumina product quality is eliminated. However, the removal efficiency of S2O 3 2− in sodium aluminate solution is very low by this method. Both S2− and S2O 3 2− in sodium aluminate solution can be removed completely by wet oxidation method in digestion process. The cost of desulfurization by wet oxidation is lower than by adding sodium nitrate or hydrogen peroxide. The results of this research reveal that wet oxidation is an economical and feasible method for the removal of sulfur in alumina production process to improve alumina quality, and provide valuable guidelines for alumina production by high-sulfur bauxite.

Keywords

high-sulfur bauxite alumina production desulfurization wet oxidation 
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References

  1. [1]
    CHEN Wan-kun, PENG Guan-cai. Intensified digestion technology of diasporic bauxite [M]. Beijing: Metallurgical Industry Press, 1998. (in Chinese) [2] YIN Jian-guo, XIA Wen-tang, HAN Ming-rong. Resource utilization of high-sulfur bauxite of low-median grade in Chongqing, China [J]. Light Metals, 2011: 19–22.Google Scholar
  2. [3]
    HU Xiao-lian, CHEN Wen-mi, XIE Qiao-lin. Sulfur phase and sulfur removal in high sulfur-containing bauxite [J]. Transactions of Nonferrous Metals Society of China, 2011, 21: 1641–1647.CrossRefGoogle Scholar
  3. [4]
    YIN Zhong-lin, WU Guo-bao, LI Xin-hua, LU Pei-qian, LIU Zhan-wei. Reaction behavior of sulphur existed in diasporic bauxite in bayer digestion process [J]. Light Metals, 2009: 69–73.Google Scholar
  4. [5]
    LU Guo-zhi, ZHANG Ting-an, BAO Li, DOU Zhi-he, ZHANG Wei-guang. Roasting pretreatment of high-sulfur bauxite [J]. Chinese Journal of Process Engineering, 2008, 8(5): 892–896. (in Chinese)Google Scholar
  5. [6]
    HU Xiao-lian, CHEN Wen-mi, XIE Qiao-lin. Desulfuration of high sulfur bauxite by oxidation roasting [J]. Journal of Central South University: Science and Technology, 2010, 41(3): 852–858. (in Chinese)Google Scholar
  6. [7]
    WANG Xiao-min, ZHANG Ting-an. Flotation desulfurization of high-sulfur bauxite with ethylthio carbamate as collector [J]. Advanced Materials Research, 2011: 239–242.Google Scholar
  7. [8]
    HU Si-chun, GUO Min, ZHAO Heng-qin, HE Run-de. Study on desulfurizing from sodium aluminate solution with barium aluminate [J]. Nonferrous Metals: Extractive Metallurgy, 2007(1): 11–13. (in Chinese)Google Scholar
  8. [9]
    HE Run-de. Sulphur removal with barium hydroxide from industrial sodium aluminate solution [J]. Nonferrous Metals, 1996, 48(4): 63–66. (in Chinese)Google Scholar
  9. [10]
    PADILLA R, VEGA D, RUIZ M C. Pressure leaching of sulfidized chalcopyrite in sulfuric acid-oxygen media [J]. Hydrometallurgy, 2007, 86: 80–88.CrossRefGoogle Scholar
  10. [11]
    EYER S L, BHARGAVA S, SUMICH M, TARDIO J, AKOLEKAR D, NYEBOER H. Removal of organics from Bayer liquor and wet oxidation [J]. Light Metals, 2000: 45–51.Google Scholar
  11. [12]
    LALLA A, ARPE R. 12 years of experience with wet oxidation [J]. Light Metals, 2002: 177–180.Google Scholar
  12. [13]
    LOH J, BRODIE G, POWER G, VERNON C. The effects of wet oxidation on hydrate yield inhibitors in alkaline aluminate solutions [J]. Light Metals, 2008: 181–186.Google Scholar
  13. [14]
    ANDERSON J, ARMSTRONG L, THOMAS D. Wet oxidation in QAL high temperature digestion for plant productivity improvement [J]. Light Metals, 2001: 121–126.Google Scholar
  14. [15]
    DONG J, TARDIO J, LOH J, POWER G, VERNON C, BHARGAVA S. Wet oxidation of bayer liquor organics: Reaction mechanisms [J]. Light Metals, 2010: 209–213.Google Scholar
  15. [16]
    SONG Chao, PENG Zhi-hong, WEI Xin-xin, QI Tian-gui. The reaction behavior of pyrite in process of bayer digestion [J]. Nonferrous Metals Science and Engineering, 2011, 2(5): 1–5. (in Chinese)Google Scholar
  16. [17]
    WANG Dao-long. Light metal metallurgical analysis [M]. Beijing: Metallurgical Industry Press, 1992. (in Chinese)Google Scholar
  17. [18]
    XIE Qiao-ling. Study on digestion behavior of high sulfur bauxite and reverse flotation desulfurization [D]. Changsha: Central South University, 2009. (in Chinese)Google Scholar

Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Zhan-wei Liu (刘战伟)
    • 1
    • 2
  • Wang-xing Li (李旺兴)
    • 3
  • Wen-hui Ma (马文会)
    • 1
    • 2
  • Zhong-lin Yin (尹中林)
    • 3
  • Guo-bao Wu (武国宝)
    • 3
  1. 1.Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingChina
  2. 2.State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province/The National Engineering Laboratory for Vacuum MetallurgyKunming University of Science and TechnologyKunmingChina
  3. 3.Zhengzhou Research Institute of CHALCOZhengzhouChina

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