Results 21 to 30 of about 3,405 (219)
Yankuang ceshi, 2022 BACKGROUND The composition of major and trace elements in arsenopyrite can be used to identify the occurrence of elements and explore the remobilization and migration behaviour of elements in different stages.
YUN Yuanjiao +7 more
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SPECIATION FEATURES OF GOLD IN ORES AND MINERALS OF THE NATALKINSKOE DEPOSIT (NORTH-EAST RUSSIA)
Геодинамика и тектонофизика, 2022 The distribution and speciation features of gold in ores and minerals of the Natalkinskoe gold deposit (North-East Russia) are studied using light microscopy (LM), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDX), X-ray ...
R. G. Kravtsova +4 more
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Hydrothermal Treatment of Arsenopyrite Particles with CuSO4 Solution [PDF]
Materials, 2021 The nature of the hydrothermal reaction between arsenopyrite particles (FeAsS) and copper sulfate solution (CuSO4) was investigated in this study. The effects of temperature (443–523 K), CuSO4 (0.08–0.96 mol/L) and H2SO4 (0.05–0.6 mol/L) concentrations, reaction time (1–120 min), stirring speed (40–100 rpm) and particle size (10–100 μm) on the FeAsS ...
Aleksei Kritskii, Stanislav Naboichenko
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New data on the mineralogy of the gold-sulfide ore type of the Karalveem deposit, Chukotka
Руды и металлы, 2022 In this paper, we present the results of a mineralogical study of the ores of the Karalveem deposit in the northeast of Russia (Central and Ruslovy areas). Gold mineralization is characterized by two types of ores: gold-quartz-arsenopyrite (quartz veins
Ruslan A. Maksarov +4 more
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Crystals, 2023 The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb ...
Ivana Jelić +5 more
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Role of Ag+ in the Bioleaching of Arsenopyrite by Acidithiobacillus ferrooxidans
Metals, 2020 Arsenopyrite (FeAsS) is often associated with gold, but pre-treatment is necessary prior to gold leaching, mainly due to the gold encapsulation in the matrix of FeAsS. Bio-oxidation is attractive and promising, largely due to its simplicity, low cost and
Yan Zhang, Qian Li, Xiaoliang Liu
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Investigation of gold content in the bio-oxidation process [PDF]
E3S Web of Conferences, 2023 In this study, the process of bio-oxidation of flotation concentrate from the flotation of gold-sulfide ores and sorption cyanidation of the bio-oxidation product were analyzed, and the content of dispersed gold in pyrite, arsenopyrite, and carbonaceous ...
Nurmurodov Tulkin +5 more
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Sedimentation of Fine Arsenopyrite with PEI and the Flotation Significance
, 2022 The flotation of fine mineral particles is always a difficult problem. The flotation of fine arsenopyrite particles (−20 μm) in a sodium butyl xanthate (SBX) system was studied by using polyethyleneimine (PEI) as a flocculant.
Fei Li +4 more
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Metals, 2023 The use of thiosulfate to extract gold from refractory ores is promising because of its non-toxicity and high selectivity. Sulfide minerals (i.e., pyrite, arsenopyrite, chalcopyrite), major gold carriers in refractory gold ores, however, hinder gold ...
Takunda Joseph Mhandu +6 more
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HETEROGENEOUS COMPOSITION OF GOLD-SULFIDE ORES FROM THE MAISKOE DEPOSIT, NORTHEAST RUSSIA [PDF]
Минералогия, 2019 The geological-technological mapping of gold-sulfide ores from the Maiskoe deposit (northeast Russia) has revealed significant heterogeneities of important technological characteristics of mineral composition: total Au and Sb contents, amount of major Au-
O.A. Tolkanov
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