Results 91 to 100 of about 3,405 (219)

Characterisation of pyrite and arsenopyrite surface species in aqueous systems for selective flotation

, 2021
Data source: , Available on requestIn most auriferous hydrothermal deposits, gold is preferentially associated with pyrite and arsenopyrite minerals, with higher economic gold values noted for the latter and arsenian pyriteminerals.
Xu, S., Skinner, W., Forson, P., Zanin, M., Asamoah, R.   +4 more
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Quantitative determination of elemental sulfur at the arsenopyrite surface after oxidation by ferric iron: mechanistic implications

Geochemical Transactions, 2001
The elemental sulfur formed at the arsenopyrite surface after oxidation by ferric iron was quantitatively measured by extraction in perchloroethylene and subsequent quantitative analysis by HPLC.
Hamers Robert J, Banfield Jillian F, McGuire Molly M   +2 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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Chemical Oxidative Kinetic Study of Arsenopyrite Dissolved by Iron Solution

, 2013
To extract the Au efficiently, the kinetic experiments were performed in a 1000 mL-glass bulbs which were made by us to determine the oxidative dissolution of arsenopyrite by iron solution.
Wu Zengling, Ruan Renman, Zhong Shuiping, Huang Zhongsheng, Zou Gang, Wu Zhi   +5 more
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Arsenopyrite

Photographed by Ron Wolf.Striated metallic grey-bronze crystals of arsenopyrite, Yaoganxian, Hunan Province ...
Wolf, Ron
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Flotation of Sulphide Minerals Using Organosolv Lignin as Collector—Pilot-Scale Trials

Materials Proceedings
The 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, Georgios Anastassakis, Nikolaos Kountouris, Maria Taxiarchou, Effrosyni Koutsotheodorou, Tilemachos Pefkos, Vasileios Klepkos, Christina Samara, Giorgos Mprokos   +8 more
doaj   +1 more source

The Au-Hosting Minerals and Process of Formation of the Carlin-Type Bojitian Deposit, Southwestern China

Geofluids, 2017
The recently discovered middle-sized Bojitian Carlin-type Au deposit is located in southwestern Guizhou Province, China, near the well-known Shuiyindong super-large-sized deposit.
Kai Hu, Moucheng Pan, Jian Cao, Yin Liu, Shanchu Han   +4 more
doaj   +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.
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Arsenopyrite-pyrite association in an orogenic gold ore: tracing mineralization history from textures and trace elements

, 2013
Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) spot analysis and element mapping coupled with high-resolution focused ion beam-scanning electron microscopy (FIB-SEM) imaging has been performed on Au-hosting sulfides from a ...
Wade, B., Cook, N., Meria, D., Silcock, D., Ciobanu, C.   +4 more
core   +1 more source

Enhanced Recovery of an Arsenopyrite-Type Gold Ore: Flotation Surface Chemistry and Kinetics of Blended Collector W8 with ADD

Colloids and Interfaces
This study investigated the flotation performance of W8, a blended xanthate collector containing ethyl, butyl, propyl, and amyl xanthates, combined with ammonium dibutyl dithiophosphate (ADD) for treating low-grade arsenopyrite-type gold ore from Golmud,
Qingqing Xing, Fei Li, Pingtian Ming, Zhen Wang   +3 more
doaj   +1 more source