Continuous monitoring of EDTA extractable iron from mineral slurries using a microfluidic chip
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Date
2022
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Yang, D.
Shallan, A.I.
Breadmore, M.C.
Greet, C.
Priest, C.
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Canadian Journal of Chemical Engineering, 2022; 101(2):1-9
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In mineral processing, iron oxidation species formed on the mineral surface play a dominant role in depressing mineral flotation and must be monitored. Current analytical methods rely on off-line sample preparation followed by conventional analytical techniques, which are labour intensive and time delayed. This paper reports the successful application of an open microfluidic chip for real-time continuous monitoring of ethylenediaminetetra acetic acid (EDTA) extractable iron (derived from iron oxidation species) in mineral slurries. A detailed mineralogical study of the mineral ore before and after leaching by EDTA has been undertaken to understand the leaching behaviour of the EDTA-slurry extraction system, showing good agreement with solution analysis.
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Copyright 2021 Canadian Society for Chemical Engineering