Improving gold recovery from refractory gold ores through biooxidation using iron-sulfur-oxidizing/sulfur-oxidizing mixotrophic bacteria
Sign Up to like & getrecommendations! Published in 2017 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2016.10.018
Abstract: Abstract The effect of biooxidation (BIOX) pre-treatment of refractory gold concentrates using mixotrophic and chemolithotrophic bacteria on the gold extraction during cyanidation of the concentrates at neutral pH was studied. A series of biooxidation and… read more here.
Keywords: sulfur oxidizing; biooxidation; refractory gold; mixotrophic bacteria ... See more keywords
Extraction of gold from refractory gold ore using bromate and ferric chloride solution
Sign Up to like & getrecommendations! Published in 2019 at "Minerals Engineering"
DOI: 10.1016/j.mineng.2019.02.037
Abstract: Abstract During gold extraction by cyanidation, fine gold particles encapsulated in sulfidic minerals are not readily extracted and carbonaceous matter can absorb aurocyanide complexes from the leaching solution. Therefore, high-sulfur and high-arsenic carbonaceous refractory gold… read more here.
Keywords: bromate ferric; refractory gold; gold ore; extraction ... See more keywords
Pore Evolution in Refractory Gold Ore Formed by Oxidation Roasting and the Effect on the Cyanide Leaching Process
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DOI: 10.1021/acsomega.1c06248
Abstract: Refractory gold ore is usually affected by the associated carbonaceous matter through the preg-robbing effect, which is eliminated by oxidation roasting, followed by leaching, to achieve a satisfactory gold leaching efficiency. Roasting–leaching experiments, pore structure… read more here.
Keywords: refractory gold; gold; oxidation roasting; evolution ... See more keywords
Redox potential measurement during pressure oxidation (POX) of a refractory gold ore
Sign Up to like & getrecommendations! Published in 2018 at "Canadian Metallurgical Quarterly"
DOI: 10.1080/00084433.2017.1386363
Abstract: ABSTRACT Pressure oxidation (POX) leaching has been commercially applied to refractory gold ores since the 1980s. In the process, sulphide material is oxidised and dissolved in order to release the gold encapsulated in the sulphide… read more here.
Keywords: redox potential; refractory gold; pox; gold ... See more keywords
Mineralogy and Pretreatment of a Refractory Gold Deposit in Zambia
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DOI: 10.3390/min9070406
Abstract: The technological mineralogy of a gold deposit located in North-Western province of Zambia was carried out by using X-ray fluorescence spectroscopy (XRF), X-ray diffraction spectroscopy (XRD), and scanning electron microscope (SEM). The results showed that… read more here.
Keywords: mineralogy; gold deposit; refractory gold; gold ... See more keywords