Bulletin of the Geological Society of Finland, 1986 Recent literature has produced much information on the thermal and compositional stability and on the natural occurrences and mineral associations of monoclinic pyrrhotite.
G. Kullerud
doaj +2 more sources
A review of flotation and selective separation of pyrrhotite: A perspective from crystal structures
International Journal of Mining Science and Technology, 2022 Pyrrhotite is an associated mineral that exists widely in sulfide ore. The presence of pyrrhotite will affect the recovery of platinum group minerals.
Ye Chen
exaly +3 more sources
Pyrrhotite Facilitates Growth and Cr Accumulation in Leersia hexandra Swartz for Effective Cr(VI) Removal in Constructed Wetlands [PDF]
ToxicsHexavalent chromium (Cr(VI)) is a hazardous pollutant frequently found in industrial wastewater. Constructed wetlands (CWs) provide an alternative for Cr(VI) removal, but their effective removal is essentially governed by the extent of Cr accumulation in
Xinyue Zhang +6 more
doaj +2 more sources
Activation Mechanism of Fe2+ in Pyrrhotite Flotation: Microflotation and DFT Calculations [PDF]
MoleculesIn industrial manufacturing, pyrrhotite(Fe1−xS), once depressed, is commonly activated for flotation. However, the replacement of CuSO4 is necessary due to the need for exact control over the dosage during the activation of pyrrhotite, which can pose ...
Qiang Song +7 more
doaj +2 more sources
Establishing a green biodesulfurization process for iron ore concentrates in stirred tank and leaching column bioreactors using Acidithiobacillus thiooxidans [PDF]
Frontiers in Bioengineering and Biotechnology, 2023 The presence of sulfur impurities in complex iron ores represents a significant challenge for the iron mining and steel-making industries as their removal often necessitates the use of hazardous chemicals and energy-intensive processes. Here, we examined
Roberto A. Bobadilla-Fazzini +1 more
doaj +2 more sources
Overexpression of sulfide:quinone reductase (SQR) in Acidithiobacillus ferrooxidans enhances sulfur, pyrite, and pyrrhotite oxidation [PDF]
Applied and Environmental MicrobiologyHydrogen sulfide is produced during the dissolution of some sulfidic minerals and during the microbial metabolism of reduced sulfur compounds. The sulfide:quinone reductase (SQR) enzyme is able to oxidize H2S, and the bioleaching cells Acidithiobacillus ...
Heejung Jung, Yuta Inaba, Scott Banta
doaj +2 more sources
The Low‐Temperature Besnus Magnetic Transition: Signals Due to Monoclinic and Hexagonal Pyrrhotite
Geochemistry, Geophysics, Geosystems, 2018 The low‐temperature magnetic properties of the many pyrrhotite varieties have not been studied extensively. Monoclinic pyrrhotite (Fe7S8) goes through the Besnus transition at ~30–34 K, which is used widely to diagnose its presence in bulk samples. Other
Chorng-Shern Horng, Andrew P Roberts
exaly +2 more sources
Pyrrhotite as a tracer for denudation of the Taiwan orogen
Geochemistry, Geophysics, Geosystems, 2012 The use of pyrrhotite as an index mineral to delineate metamorphic isograds has long been proposed. However, details of the occurrence of pyrrhotite in different metamorphic facies and its implications have rarely been explored.
Chorng-Shern Horng +2 more
exaly +2 more sources
International Journal of Mining Science and TechnologyThe electrochemical interaction between galena and monoclinic pyrrhotite was investigated to examine its impact on the physical and chemical properties of the mineral micro-surface.
Huashan Yan
exaly +3 more sources
Case Studies in Construction Materials, 2022 Extensive cracking in thousands of residential foundations in eastern Connecticut is found to be due to expansions from oxidation of pyrrhotite in crushed gneiss coarse aggregate in concrete.
Dipayan Jana
doaj +1 more source