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Recovery Nickel-Ferrous Compound from Nickel-Bearing Secondary Resources

  • Qiuju LiEmail author
  • Songyan Liu
  • Caixiang Yu
  • Fanxi Yang
  • Ziyang Wang
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The stainless steel pickling sludge contained valuable metals such as Fe, Cr, and Ni and was a second Ni-bearing resource. It was essential to explore an economical technology for recovery metals from the low grade pickling sludge. The method of carbon thermal reduction–magnetic separation process was proposed to not only recover Fe, Cr, and Ni from the stainless steel sludge, but also dispose waste environmental friendly. The weight variety and phases change were characterized with TG-DSC and XRD. The influence of reduction temperature, the ratio of C/O (carbon/oxygen), the reaction time, and addition of pickling sludge were investigated. The experimental results showed that the best reduction condition was at temperature 1350 °C, with 1.0 C/O ratio. The recovery rate of Ni and Fe was reached up to 97.86 and 96.07%, respectively, under this condition. Meanwhile, the contents of Fe, Ni, and Cr of the tailings were 4.04, 0.06, and 0.09%.

Keywords

Stainless steel sludge Reduction magnetic separation Metals granular Laterite ore tailing 

Notes

Acknowledgements

This work was supported by the Joint Funds of the National Natural Science Foundation of China [Grant Number: 51974185; under Grant Number U1760109]. The authors acknowledge Instrumental Analysis & Research Center of Shanghai University.

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Qiuju Li
    • 1
    Email author
  • Songyan Liu
    • 2
  • Caixiang Yu
    • 3
  • Fanxi Yang
    • 1
  • Ziyang Wang
    • 2
  1. 1.State Key Laboratory of Advanced Special SteelsShanghai UniversityShanghaiChina
  2. 2.Shanghai Key Laboratory of Modern Metallurgy & Materials ProcessingShanghai UniversityShanghaiChina
  3. 3.School of Materials Science and EngineeringShanghai UniversityShanghaiChina

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