Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants

The flotation response of malachite, calcite and quartz to bis (2-ethylhexyl) phosphate (DEHPA), dibutyl phosphate (DBP) and tributyl phosphate (TBP) was evaluated by micro-flotation experiments. The results showed that DEHPA exhibited an impressive flotation selectivity for malachite against calcit...

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Main Authors:	Hongli Fan, Jingqin Qin, Jun Liu, Guangyi Liu, Xianglin Yang
Format:	Article
Language:	English
Published:	Elsevier 2019-11-01
Series:	Journal of Materials Research and Technology
Online Access:	http://www.sciencedirect.com/science/article/pii/S2238785419309937

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spelling	doaj-0d0c44c19a47444392295cbd1a9068ce2020-11-25T03:42:10ZengElsevierJournal of Materials Research and Technology2238-78542019-11-018651405148Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactantsHongli Fan0Jingqin Qin1Jun Liu2Guangyi Liu3Xianglin Yang4College of Chemistry and Chemical engineering, Central South University, Changsha, 410083, ChinaCollege of Chemistry and Chemical engineering, Central South University, Changsha, 410083, ChinaCollege of Chemistry and Chemical engineering, Central South University, Changsha, 410083, ChinaCorresponding author.; College of Chemistry and Chemical engineering, Central South University, Changsha, 410083, ChinaCollege of Chemistry and Chemical engineering, Central South University, Changsha, 410083, ChinaThe flotation response of malachite, calcite and quartz to bis (2-ethylhexyl) phosphate (DEHPA), dibutyl phosphate (DBP) and tributyl phosphate (TBP) was evaluated by micro-flotation experiments. The results showed that DEHPA exhibited an impressive flotation selectivity for malachite against calcite/quartz in the pH range of 6.0–9.0 and achieved superior malachite flotation recovery over DBP and TBP. The flotation mechanism of DEHPA to malachite was farther investigated through adsorption, contact angle, zeta potential, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The findings inferred that DEHPA reacted with the surface copper atom of malachite via its O atoms of POH and PO to form the hydrophobic surface complexes of Cu(II)-DEHPA. The double active center of the P(O)OH group might be contributed to the stronger affinity of DEHPA and DBP to malachite than that of TBP with the single active center of the PO group. TBP returned the lowest malachite recovery among the three phosphate surfactants, even it has more hydrophobic-carbon atoms than those of DBP. Keywords: Bis (2-ethylhexyl) phosphate, Malachite, Flotation, Adsorptionhttp://www.sciencedirect.com/science/article/pii/S2238785419309937
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hongli Fan Jingqin Qin Jun Liu Guangyi Liu Xianglin Yang
spellingShingle	Hongli Fan Jingqin Qin Jun Liu Guangyi Liu Xianglin Yang Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants Journal of Materials Research and Technology
author_facet	Hongli Fan Jingqin Qin Jun Liu Guangyi Liu Xianglin Yang
author_sort	Hongli Fan
title	Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
title_short	Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
title_full	Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
title_fullStr	Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
title_full_unstemmed	Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
title_sort	investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants
publisher	Elsevier
series	Journal of Materials Research and Technology
issn	2238-7854
publishDate	2019-11-01
description	The flotation response of malachite, calcite and quartz to bis (2-ethylhexyl) phosphate (DEHPA), dibutyl phosphate (DBP) and tributyl phosphate (TBP) was evaluated by micro-flotation experiments. The results showed that DEHPA exhibited an impressive flotation selectivity for malachite against calcite/quartz in the pH range of 6.0–9.0 and achieved superior malachite flotation recovery over DBP and TBP. The flotation mechanism of DEHPA to malachite was farther investigated through adsorption, contact angle, zeta potential, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The findings inferred that DEHPA reacted with the surface copper atom of malachite via its O atoms of POH and PO to form the hydrophobic surface complexes of Cu(II)-DEHPA. The double active center of the P(O)OH group might be contributed to the stronger affinity of DEHPA and DBP to malachite than that of TBP with the single active center of the PO group. TBP returned the lowest malachite recovery among the three phosphate surfactants, even it has more hydrophobic-carbon atoms than those of DBP. Keywords: Bis (2-ethylhexyl) phosphate, Malachite, Flotation, Adsorption
url	http://www.sciencedirect.com/science/article/pii/S2238785419309937
work_keys_str_mv	AT honglifan investigationintotheflotationofmalachitecalciteandquartzwiththreephosphatesurfactants AT jingqinqin investigationintotheflotationofmalachitecalciteandquartzwiththreephosphatesurfactants AT junliu investigationintotheflotationofmalachitecalciteandquartzwiththreephosphatesurfactants AT guangyiliu investigationintotheflotationofmalachitecalciteandquartzwiththreephosphatesurfactants AT xianglinyang investigationintotheflotationofmalachitecalciteandquartzwiththreephosphatesurfactants
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Investigation into the flotation of malachite, calcite and quartz with three phosphate surfactants

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