Study on Water Wettability Mechanism of Pyrite and Coal Surfaces Based on Density Functional Theory
Kuangchan zonghe liyong, 2022 Flotation is based on the difference of wettability of mineral surfaces. In order to study the water wettability mechanism of pyrite and coal surfaces, pyrite and perfect coal surface models were constructed. The adsorptions of water and oxygen molecules
Chengyong Wang +3 more
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Deep Underground Science and Engineering, EarlyView.Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
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Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2023 Two examples of contact twins in pyrite from Peru are described. The first one, from Pasto Bueno ore deposit, shows the pyritohedron {120} as principal form, accompanied by the {111} octahedron and {100} cube as secondary forms, giving a lenticular aspect.
Yves Moëlo +2 more
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Pyrite formation from FeS and H2S is mediated through microbial redox activity
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance Pyrite is the most abundant iron−sulfur mineral in sediments. Over geological times, its burial controlled oxygen levels in the atmosphere and sulfate concentrations in seawater.
Joana Thiel +4 more
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Developmental Dynamics, EarlyView.Abstract Background The dentigerous jawbones of a 423‐million‐year‐old stem chondrichthyan (ischnacanthid acanthodian) carry a characteristic combination of multi‐row non‐shedding white teeth with brownish overgrowing denticles. The color distinction makes it a good model for observing the interaction between two odontode lineages, but the nature of ...
Jia‐Cih Kang +3 more
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High‐Pressure Transformations and Stability of Ferromagnesite in the Earth's Mantle
Geophysical Monograph Series, Page 105-113., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Eglantine Boulard +2 more
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Arsenic substitution and galvanic coupling in pyrite trigger uranium mineralization in sandstone
Communications Earth & EnvironmentSandstone-hosted uranium (U) deposits account for the majority of global U production. In these deposits, pyrite is widely considered one of the most common reducing agents playing a crucial role in ore formation.
Huijie Yu +8 more
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The Scientific World Journal, 2013 Acidithiobacillus ferrooxidans (A. ferrooxidans) was applied in coal biodesulfurization and coal’s pyrite bioleaching. The result showed that A. ferrooxidans had significantly promoted the biodesulfurization of coal and bioleaching of coal’s pyrite ...
Fen-Fen Hong +5 more
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The effect of adsorbed lipid on pyrite oxidation under biotic conditions
Geochemical Transactions, 2006 The chemolithoautotrophic bacterium, Acidithiobacillus ferrooxidans, commonly occurs in acid mine drainage (AMD) environments where it is responsible for catalyzing the oxidation of pyrite and concomitant development of acidic conditions.
Strongin Daniel R +4 more
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ESTIMATION OF SULPHUR IN PYRITES. [PDF]
Journal of the American Chemical Society, 1895 n ...
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