Identification and geochemical modeling of processes controlling leaching of Cr(VI) and other major elements from chromite ore processing residue

@inproceedings{Geelhoed2002IdentificationAG,
  title={Identification and geochemical modeling of processes controlling leaching of Cr(VI) and other major elements from chromite ore processing residue},
  author={Jeanine S. Geelhoed and J. J. Meeussen and Stephen Hillier and David G. Lumsdon and Rhodri P. Thomas and John G. Farmer and Eric Paterson},
  year={2002}
}
Abstract Chromite ore processing residue (COPR) contains very high levels of chromium as Cr(III) and Cr(VI) and has a pH of ∼11.5 to 12. Millions of tonnes of COPR have in the past been deposited in urban areas. We have studied the factors that control leaching of Cr(VI), Ca, Al, Si, and Mg from COPR by means of batch experiments, mineralogical characterization of COPR via X-ray powder diffraction and scanning electron microscopy, and chemical equilibrium modeling. Batch experiments at a range… CONTINUE READING

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