WorldCat Identities

Buckley, A. N. (Alan N.)

Overview
Works: 9 works in 12 publications in 1 language and 25 library holdings
Genres: Conference papers and proceedings  Academic theses 
Roles: Author, Other
Publication Timeline
.
Most widely held works by A. N Buckley
Application of surface science to advancing flotation technology : selected papers from the Engineering Foundation conference, 11-16 August, 1997, Naantali Spa Hotel, Naantali, Finland by Engineering Foundation Conference( Book )

4 editions published in 1997 in English and held by 15 WorldCat member libraries worldwide

Can sulfide minerals oxidize water to hydrogen peroxide during grinding in the absence of dissolved oxygen? by A. N Buckley( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

Pentlandite sulfur core electron binding energies by Siew Wei Goh( )

1 edition published in 2006 in English and held by 2 WorldCat member libraries worldwide

A Mössbauer effect investigation of some paramagnetic iron compounds by A. N Buckley( )

1 edition published in 1971 in English and held by 1 WorldCat member library worldwide

Metals from Sulfide Minerals: The Role of Adsorption of Organic Reagents in Processing Technologies by A. N Buckley( )

1 edition published in 2003 in Undetermined and held by 1 WorldCat member library worldwide

Yes
Interaction of thiol collectors with pre-oxidised sulfide minerals by A. N Buckley( )

1 edition published in 2003 in Undetermined and held by 1 WorldCat member library worldwide

In order to determine whether pre-oxidation results in a change in the identity of the products of the interaction of sulfide minerals with flotation collectors, chalcocite or galena surfaces that had been exposed to air were treated with diethyl dithiophosphate (DTP) or iso-butyl xanthate (BX), respectively, in a borate buffer solution of pH 9.2. The resulting surfaces were studied by means of X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (ToF-SIMS). The metal oxidation products formed on each mineral surface during the exposure to air were removed by immersion in water or the buffer solution alone and, to avoid this happening in collector solutions, most experiments were carried out with solutions saturated with the ion of the metal component of the mineral. Immersion of chalcocite surfaces in copper-saturated 10 5 mol dm 3 dithiophosphate solution for 40 s, or of galena surfaces in lead-saturated 10 4 mol dm 3 xanthate solution for 8 min, resulted in the formation of chemisorbed DTP or BX. Immersion of chalcocite or galena in similar DTP or BX solutions for longer periods gave rise to CuDTP or Pb(OH)BX, respectively, in addition to the chemisorbed collector. In each case, the products of interaction of the mineral with the collector were the same for freshly exposed and pre-oxidised surfaces. The results indicate that the mechanism for the formation of the chemisorbed layer on the pre-oxidised surfaces would have been ion exchange with copper oxygen or lead oxygen species followed by reorganisation adjacent to the mineral surface, rather than dissolution of the metal oxygen species in the aqueous medium followed by chemisorption of the collector at the oxide-free surface
Interaction of cuprite with dialkyl dithiophosphates by A. N Buckley( )

1 edition published in 2009 in Undetermined and held by 1 WorldCat member library worldwide

Yes
Mechanism of mixed dithiophosphate and mercaptobenzothiazole collectors for Cu sulfide ore minerals( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Highlights: Cu sulfide ore minerals conditioned in BDTP-MBT blends were investigated by XPS. In low concentrations of a BDTP-predominant blend, BDTP adsorption prevailed. In high concentrations of the blend, only MBT species adsorbed unless pH below 7. Both BDTP and MBT species adsorbed following sequential conditioning. No evidence obtained for surface chemical synergism between the two collectors. Abstract: The species adsorbed on Cu sulfide ore minerals from alkaline or near neutral solutions of blends of the flotation collectors dibutyl dithiophosphate (BDTP) and 2-mercaptobenzothiazole (MBT) have been established by X-ray photoelectron spectroscopy. Adsorption on air-exposed Cu metal, cuprite, chalcocite, covellite, chalcopyrite and pyrite was investigated from relatively high concentration solutions to simulate processing of variably oxidised ores or slug addition of collector under plant conditions, as well as from solutions of lower concentration. For air-exposed Cu metal, it was found that for a typical BDTP-MBT blend in which di- n -butyl DTP predominated, negligible BDTP was adsorbed at high concentration unless the pH was below 7. By contrast, at low concentrations but under non-starvation conditions, BDTP adsorption predominated even in the alkaline pH range. Both BDTP and MBT species were adsorbed following sequential conditioning in the two collectors. The dithiolate (MBT)2 was not adsorbed from high concentrations of the blend, whereas it was adsorbed from similar concentrations of MBT collector alone. Most of the observed behaviour can be explained by collector solution species reactivity with Cu decreasing in the order MBT − > BDTP − > HMBT. There was no evidence to suggest any surface chemical synergism between the two collectors. For the minerals, competitive chemisorption broadly similar to that for Cu metal was observed, but the formation and adsorption of multilayer molecular CuBDTP or CuMBT was lower, and that of (MBT)2 and HMBT was higher, when the surface availability of Cu was lower than at a native oxide layer. Open circuit potentials for Cu metal, chalcocite and covellite electrodes in 10 −3 M solution of the collector blend were lower than for the corresponding values in MBT collector alone. For all concentrations in the alkaline pH range, surfaces conditioned in either BDTP alone or the blend were obviously hydrophobic, whereas surfaces conditioned in high concentrations of MBT were not obviously hydrophobic. Some surfaces conditioned sequentially in the two collectors, or in high concentrations of the blend at a pH below 7, were only moderately hydrophobic. Thus, depending on the collector concentration and pH, direct (albeit ex-situ ) surface chemical characterisation established the adsorption of different species from a BDTP-MBT blend compared with sequential conditioning in the individual collectors, and hence potentially different hydrophobicities
The interaction of sodium mercaptobenzothiazole with gold electrode and nanorod surfaces( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

 
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.81 (from 0.64 for Pentlandit ... to 0.97 for Pentlandit ...)

Alternative Names
Buckley, Alan N.

Languages