Adsorption behaviour of xanthate and dithiophosphinate from their mixtures on chalcopyrite

Bagci, Esra, Ekmekci, Zafir and Bradshaw, Dee (2007) Adsorption behaviour of xanthate and dithiophosphinate from their mixtures on chalcopyrite. Minerals Engineering, 20 10: 1047-1053.


Author Bagci, Esra
Ekmekci, Zafir
Bradshaw, Dee
Title Adsorption behaviour of xanthate and dithiophosphinate from their mixtures on chalcopyrite
Journal name Minerals Engineering  (ERA 2012 Listed)    (ERA 2010 Rank A*)   Check publisher's open access policy
Publication date 2007-08
Sub-type Article
Year available 2007
DOI 10.1016/j.mineng.2007.04.011
Volume number 20
Issue number 10
ISSN 0892-6875; 1872-9444
Start page 1047
End page 1053
Total pages 7
Place of publication Oxford, London, U.K.
Publisher Pergamon
Collection year 2007
Language eng
Subject 09 Engineering
0914 Resources Engineering and Extractive Metallurgy
091405 Mining Engineering
Abstract The beneficial effects of the synergy between two or more reagents were realized long time ago. The purpose of using a mixture of collectors was to increase both the recovery and selectivity. In this work, two thiol collectors, isopropyl xanthate (SIPX) and di-isobutyl dithiophosphinate (DTPI), having different chemical and functional properties, were used. The adsorption behaviour of these collectors from their mixtures was investigated at various SIPX:DTPI ratios and sequence of addition by cyclic voltammetry and adsorption experiments at pH 9.2. The results showed that both the ratio of collectors in these mixtures, and sequence of addition were important. The amount of total collector (SIPX and DTPI) adsorbed on chalcopyrite was measured for these various reagent mixtures and for single collectors. Two maxima were found. One was found for the 30:70 DTPI:SIPX suite in which the DTPI was added first. A second was found with the 50:50 SIPX:DTPI suite when the collectors were added together. These results revealed that the maximum synergistic effect of using mixture of SIPX and DTPI was strongly influenced by the ratio of the collectors in the mixture and particularly sequence of addition.
Keyword Sulphide ores
Flotation collectors
Mixture of collectors
Adsorption
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Selected papers from Reagents ’06, Cape Town, South Africa, November 2006

 
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