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Journal of Material Cycles and Waste Management

, Volume 20, Issue 1, pp 193–200 | Cite as

Sb release characteristics of the solid waste produced in antimony mining smelting process

  • Bozhi Ren
  • Yalin Zhou
  • Hongpu Ma
  • Renjian Deng
  • Peng Zhang
  • Baolin Hou
ORIGINAL ARTICLE

Abstract

Sb release characteristics of blast furnace slag, mining waste rock and tailing sand were investigated in static immersion and dynamic leaching test. These three kinds of waste samples were collected from the antimony mine in Lengshuijiang, China, produced in mining smelting process. Effects of solid/liquid ratio, sample size and pH of leaching solution on Sb release characteristics were inspected based on the analysis of scanning electron microscope, pH and EC of leachate. The optimal parameters for Sb leaching of each sample were analyzed. For blast furnace slag and mining waste rock, Sb release contents increased along with the decline of solid/liquid ratio. The maximum accumulative release contents were 42.13, 34.26 mg/kg at the solid/liquid ratio of 1:20. While Sb release content for tailing sand decreased first and then increased with the reduction of solid/liquid ratio. When the solid/liquid ratio was 1:5, the accumulative Sb release content reached the most (24.30 mg/kg). Sb release content of mining waste rock increased with the drop of leaching solution pH, with the highest accumulative release content of 26.01 mg/kg at pH 2.0. Sb release contents of blast furnace slag and tailing sand showed positive correlation with the variation of leaching solution pH. The maximum accumulative release contents of these two samples were 215.91 and 147.83 mg/kg, respectively, when leaching solution pH was 7.0. In summary, Sb release capacity of the three samples in descending order was tailing sand, blast furnace slag and mining waste rock. pH and EC of the leachate in dynamic test varied independently with the initial pH of leaching solution while showing close relationship with mineral hydrolysis in the waste.

Keywords

Antimony (Sb) Antimony mine Solid waste Release characteristics Leaching 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 41472328 and 41672350).

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Copyright information

© Springer Japan 2016

Authors and Affiliations

  • Bozhi Ren
    • 1
  • Yalin Zhou
    • 1
  • Hongpu Ma
    • 1
  • Renjian Deng
    • 1
  • Peng Zhang
    • 1
  • Baolin Hou
    • 1
  1. 1.Hunan Provincial Key Laboratory of Shale Gas Resource UtilizationHunan University of Science and TechnologyXiangtanChina

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