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Removing and stabilizing as from copper refining circuits by hydrothermal processing

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  • Handing As In Cu Processing
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Abstract

Experimental testwork has shown that arsenic can be removed from arsenic-bearing solutions by hydrothermal precipitation at temperatures in the 170–200°C range. The presence of Fe(III) is required for combination with As(V) to form the crystalline hydrated ferric arsenate known as scorodite (FeAsO4·2H2O). The contained arsenic is effectively immobilized by incorporation into a crystalline, low-solubility compound. Process options are suggested for disposing of arsenic in copper electrorefinery bleed liquors.

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References

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Authors and Affiliations

  1. the Imperial College of Science, Technology and Medicine, Royal School of Mines, USA

    A. J. Monhemius & P. M. Swash

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  1. A. J. Monhemius
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  2. P. M. Swash
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Additional information

For more information, contact A. J. Monhemius, Imperial College of Science, Technology and Medicine, Royal School of Mines, Prince Consort Road, London SW7 2BP, United Kingdom; telephone 44-171-594-7329; fax 44-171-594-7444; e-mail j.monhemius@ic.ac.uk.

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Monhemius, A.J., Swash, P.M. Removing and stabilizing as from copper refining circuits by hydrothermal processing. JOM 51, 30–33 (1999). https://doi.org/10.1007/s11837-999-0155-y

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  • DOI: https://doi.org/10.1007/s11837-999-0155-y

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