Results 81 to 90 of about 4,445 (173)
Engineering ProceedingsBacterial leaching is a well-known green technology proposed for the extraction of valuable metals into solution. However, this biotechnology has some “bottle neck” problems too.
Tatiana Abashina +3 more
doaj +1 more source
Известия высших учебных заведений: Геология и разведка, 2018 The distribution of rare-earth elements (REE) in ores of gold deposits of East Transbaikalia has shown that the ore-bearing magma chambers have different depths and degrees of differentiation.
B. N. Abramov
doaj +1 more source
An XPS and XANES Study on the Bioleaching of Arsenopyrite with or without Pyrite
, 2017 In the present study, we investigated the bioleaching of arsenopyrite with or without pyrite by moderate thermophiles. In both chemical leaching and bioleaching, the addition of pyrite decreased the leaching rate of arsenopyrite.
Wei Hua Liu +5 more
core +2 more sources
Influence of pulp aeration on flotation separation of arsenopyrite from pyrite
, 2021 Data source: Yes, Upon request, contact author(s).Arsenopyrite, often associated with pyrite as the two most important hosts of gold in auriferous complex sulphide deposits, preferentially concentrates more gold than pyrite.
Skinner, W. +3 more
core
Enriching auriferous flotation concentrate through selective arsenopyrite flotation
, 2021 Data source: Yes, Upon request, contact authorsAuriferous concentrate from a processing plant predominantly made up of pyrite and arsenopyriteas the main gold-bearing sulphides was subjected to selective flotation using isopropyl-N-ethylthionocarbamate ...
Skinner, W. +3 more
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Stability and solubility of arsenopyrite, FeAsS, in crustal fluids.
, 2002 The stability and solubility of natural arsenopyrite (FeAsS) in pure water and moderately acid to slightly basic aqueous solutions buffered or not with H2 and/or H2S were studied at temperatures from 300 to 450°C and pressures from 100 to 1000 bar.
Kara, Sami +2 more
core +1 more source
Flotation of Sulphide Minerals Using Organosolv Lignin as Collector—Pilot-Scale Trials
Materials ProceedingsThe use of toxic chemicals as flotation reagents raises concerns about the sustainability of the process and its environmental impact. Xanthates are a family of efficient collectors that find application in the selective recovery of lead, gold and zinc ...
Panagiotis M. Angelopoulos +8 more
doaj +1 more source
Kinetics of Arsenopyrite Oxidative Dissolution by Oxygen
, 2004 The objective of this study is to use a mixed flow reactor system to determine the dissolution rate and infer potential mechanisms of arsenopyrite (FeAsS) oxidation by dissolved oxygen at 25°C and circumneutral pH.
Walker, Forest P.
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Selective Flotation of Pyrite from Arsenopyrite by Low Temperature Oxygen Plasma Pre-Treatment
, 2018 In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals.
Baoxu Song +4 more
core +1 more source
Distribution and agglomeration of gold in arsenopyrite and pyrite.
, 1995 The form and location of gold in the structure of arsenopyrite and pyrite minerals, and the mechanisms for the mobility agglomeration of gold in arsenopyrite during thermal treatment, have been studied using a combination of Rietveld X-ray diffraction ...
Aylmore, Mark G.
core +1 more source