Reference number : GC-2017-Q4-00492, amendment number : , agreement type : G, recipient legal name : Donkor, Kingsley (Thompson Rivers University), recipient country : CA, recipient province : nan, recipient city : British Columbia|Colombie-Britannique, recipient postal code : nan, program name english : Engage Plus Grants for universities, program name french : Subvention d'engagement partenarial Plus pour les universités, program purpose english : Xanthates are compounds used to aid froth flotation in the mining industry to improve metal extraction of_x000D_
sulphide minerals by selectively separating hydrophobic and hydrophilic minerals. We recently completed an_x000D_
NSERC Engage project with New Afton Mine (New Gold Inc.) in which we successfully developed a capillary_x000D_
electrophoresis (CE) method for separating the xanthates - amyl, isobutyl, isopropyl, and ethyl. The developed_x000D_
method enables us to separate and quantify the different xanthates. In the Engage work, a good detection limit_x000D_
was achieved in the lower part-per-million (ppm) range. However, we would like to improve upon this_x000D_
detection limit to enable the quantification of even lower concentrations of xanthates which may be present in_x000D_
the tailings samples. Thus, in the Engage Plus work efforts will be made to attain a detection limit in the_x000D_
part-per-billion (ppb) range. Accurate testing of xanthates in this ppb range will help to understand ways of_x000D_
improving the use of potassium amyl xanthate (PAX) in the circuit and limit its overuse so that the mill circuit_x000D_
is not wasting xanthate nor starving the circuit. Liquid chromatography-mass spectrometry (LC/MS) will also_x000D_
be developed to verify the accuracy of the CE results. We would also study the degradation process of various_x000D_
xanthates using gas chromatography-mass spectrometry (GC/MS). This will allow for quantification of the_x000D_
volatile degradation products evolved from each of the xanthates under varying conditions. The findings from_x000D_
this method would provide ideas on the method best suited for an on-stream analyzer and steps will be taken to_x000D_
understand the limitations of such an application. Benefits from development of an on-stream analyzer have_x000D_
huge implications in the mining industry. Mill management is particularly interested in examining the potential_x000D_
on-stream analyzer application of the developed methods. A comprehensive understanding of the degradation_x000D_
process is expected from this work and can then be applied to flotation circuits to improve flotation efficiency_x000D_
and minimize degradation of product, thus providing extensive monetary and industrial benefit., program purpose french : Xanthates are compounds used to aid froth flotation in the mining industry to improve metal extraction of_x000D_
sulphide minerals by selectively separating hydrophobic and hydrophilic minerals. We recently completed an_x000D_
NSERC Engage project with New Afton Mine (New Gold Inc.) in which we successfully developed a capillary_x000D_
electrophoresis (CE) method for separating the xanthates - amyl, isobutyl, isopropyl, and ethyl. The developed_x000D_
method enables us to separate and quantify the different xanthates. In the Engage work, a good detection limit_x000D_
was achieved in the lower part-per-million (ppm) range. However, we would like to improve upon this_x000D_
detection limit to enable the quantification of even lower concentrations of xanthates which may be present in_x000D_
the tailings samples. Thus, in the Engage Plus work efforts will be made to attain a detection limit in the_x000D_
part-per-billion (ppb) range. Accurate testing of xanthates in this ppb range will help to understand ways of_x000D_
improving the use of potassium amyl xanthate (PAX) in the circuit and limit its overuse so that the mill circuit_x000D_
is not wasting xanthate nor starving the circuit. Liquid chromatography-mass spectrometry (LC/MS) will also_x000D_
be developed to verify the accuracy of the CE results. We would also study the degradation process of various_x000D_
xanthates using gas chromatography-mass spectrometry (GC/MS). This will allow for quantification of the_x000D_
volatile degradation products evolved from each of the xanthates under varying conditions. The findings from_x000D_
this method would provide ideas on the method best suited for an on-stream analyzer and steps will be taken to_x000D_
understand the limitations of such an application. Benefits from development of an on-stream analyzer have_x000D_
huge implications in the mining industry. Mill management is particularly interested in examining the potential_x000D_
on-stream analyzer application of the developed methods. A comprehensive understanding of the degradation_x000D_
process is expected from this work and can then be applied to flotation circuits to improve flotation efficiency_x000D_
and minimize degradation of product, thus providing extensive monetary and industrial benefit., agreement title english : Characterization and degradation studies of xanthates in mining waters, agreement title french : Characterization and degradation studies of xanthates in mining waters, agreement number : EGP2, agreement value : 12490.0, agreement start date : 2018-02-07, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada