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Development of an ion chromatographic system suitable for monitoring the gold cyanidation process

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Fagan, Peter Andrew (1998) Development of an ion chromatographic system suitable for monitoring the gold cyanidation process. PhD thesis, University of Tasmania.

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Abstract

This thesis reports the development of new ion chromatographic (IC) methodology
suitable for monitoring the gold cyanidation process. This project continues a series
of related investigations involving the development of IC techniques, based mainly
on reversed-phase ion interaction chromatography (RPIIC), for the speciation of
metallo-cyanide complexes formed during the cyanidation of auriferous ores [1-4].
The focus of this earlier work was concerned with the development of suitable
methodology for the analysis of the products of the cyanidation process, such as
those found in tailings dams and environmental samples.
In contrast to the previous investigations, this project has focused on the
determination of the various cyano species found during the extraction stage of the
gold cyanidation process. These cyano species include uncomplexed ('free') cyanide,
metallo-cyanide complexes, thiocyanate and cyanate. It should be noted that the
terms 'free' and uncomplexed cyanide are not strictly interchangeable, especially in
the presence of labile metallo-cyanide complexes. The change in emphasis from
environmental monitoring to process control was originally suggested by Metana
Minerals, as a means to improve the efficiency of their cyanide leaching operations.
It should be emphasised that cyanide (usually added as sodium or calcium cyanide)
is the most expensive reagent used during the extraction of gold from ore.

Item Type: Thesis (PhD)
Keywords: Cyanide process, Ion exchange chromatography
Copyright Holders: The Author
Copyright Information:

Copyright 1998 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

Thesis (Ph.D.)--University of Tasmania, 1999. Includes bibliographical references

Date Deposited: 09 Dec 2014 00:04
Last Modified: 11 Mar 2016 05:55
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