Quantitative property-property relationship (QPPR) approach in predicting flotation efficiency of chelating agents as mineral collectors |
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| Authors: | R. Natarajan I. Nirdosh P. Venuvanalingam M. Ramalingam |
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| Affiliation: | 1. Department of Chemistry , Campion School , Tiruchirappalli , Tamil Nadu , 620 001 , India;2. Department of Chemical Engineering , Lakehead University , Thunder Bay , Ont. , P7B 5E1 , Canada;3. Department of Chemistry , Bharathidasan University , Tiruchirappalli , 620 024 , India;4. Department of Chemistry , Rajah Serfoji Government College , Thanjavur , 613 005 , India |
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| Abstract: | ![]()
The QPPR approach has been used to model cupferrons as mineral collectors. Separation efficiencies (Es) of these chelating agents have been correlated with property parameters namely, log P , log K oc , substituent-constant σ , Mullikan and ESP derived charges using multiple regression analysis. Es of substituted-cupferrons in the flotation of a uranium ore could be predicted within experimental error either by log P or log K oc and an electronic parameter. However, when a halo , methoxy or phenyl substituent was in para to the chelating group, experimental Es was greater than the predicted values. Inclusion of a Boolean type indicative parameter improved significantly the predictability power. This approach has been extended to 2-aminothiophenols that were used to float a zinc ore and the correlations were found to be reasonably good. |
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| Keywords: | Qppr Flotation Efficiency Chelating Agents Mineral Collectors |
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