Results 21 to 30 of about 976 (183)
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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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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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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A STUDY OF THE CHEMICAL BEHAVIOR OF ARSENOPYRITE. [PDF]
Journal of the American Chemical Society, 1894 n ...
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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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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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Transactions of Nonferrous Metals Society of China, 2008 Abstract Oxidation of arsenopyrite with Acidithiobacillus ferrooxidans was studied. The electrochemical results show that arsenopyrite is firstly oxidized to As 2 S 2 at the potential of 0.2−0.3 V (vs SHE) and As 2 S 2 covers the electrode and retards the process continuously.
Tao JIANG +4 more
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Results in EngineeringArsenopyrite is an important gold-bearing sulfide mineral, and pretreatment is essential before gold extraction to maximize gold recovery. Bioleaching, with its advantages of simple operation and environmental friendliness, has received widespread ...
Baojun Yang +8 more
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