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Quantitative property-property relationship (QPPR) approach in predicting flotation efficiency of chelating agents as mineral collectors.
Natarajan, R; Nirdosh, I; Venuvanalingam, P; Ramalingam, M.
Afiliação
  • Natarajan R; Department of Chemistry, Campion School, Tiruchirappalli, Tamil Nadu, India. rnat@eth.net
SAR QSAR Environ Res ; 13(5): 499-508, 2002 Jul.
Article em En | MEDLINE | ID: mdl-12442767
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 Koc, substituent-constant sigma, 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 Koc 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.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quelantes / Minerais / Modelos Químicos Tipo de estudo: Prognostic_studies / Risk_factors_studies Idioma: En Ano de publicação: 2002 Tipo de documento: Article
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quelantes / Minerais / Modelos Químicos Tipo de estudo: Prognostic_studies / Risk_factors_studies Idioma: En Ano de publicação: 2002 Tipo de documento: Article