Quantifying hydrophobicity of pyrite after copper activation and DTPI addition under electrochemically controlled conditions

Autor:	Cahit Hicyilmaz, Zafir Ekmekçi, Gülsün Gökağaç, N. Emre Altun
Rok vydání:	2004
Předmět:	Mechanical Engineering Sodium Inorganic chemistry chemistry.chemical_element General Chemistry engineering.material Geotechnical Engineering and Engineering Geology Electrochemistry Copper Contact angle chemistry Control and Systems Engineering Reagent engineering Pyrite Wetting Cyclic voltammetry
Zdroj:	Minerals Engineering. 17:879-890
ISSN:	0892-6875
DOI:	10.1016/j.mineng.2004.02.007
Popis:	In this study, the response of the surface of pyrite to copper activation under electrochemically controlled conditions was investigated in the presence and absence of sodium diisobutyl dithiophosphinate (DTPI). The mechanism of interactions between the concerned reagents and pyrite was investigated using cyclic voltammetry in solutions of different pH. In addition, contact angle measurements were performed to determine the wetting behavior of the pyrite surface as a function of pulp potential and pH. The results of both the cyclic voltammetry and contact angle measurements were evaluated to identify the nature of the species formed at the pyrite surface and to explain the underlying mechanism. Both phases of the experiments confirmed that the mechanism of copper activation of pyrite occurred through certain electrochemical reactions, whereas the mutual interactions between DTPI-pyrite and Cu–DTPI couples relied on chemical means.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f5f3a4228b1b1daee3b6f2acc0428197 https://doi.org/10.1016/j.mineng.2004.02.007 Zobrazit plný text záznamu Full Text from ScienceDirect