Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach
Publication type: Journal Article
Publication date: 2013-06-18
scimago Q1
wos Q1
SJR: 1.416
CiteScore: 12.2
Impact factor: 4.6
ISSN: 08827508, 15477401
General Chemistry
Mechanical Engineering
Geotechnical Engineering and Engineering Geology
Economic Geology
Abstract
A linear correlation between free energy and enthalpy for crystalline and soluble oxocompounds based in the Sverjensky–Molling equation is used to calculate the Gibbs free energies of formation of MnWO4 (−1172.48 ± 12.76 kJ mol−1), H2WO4 (−1006.91 ± 10.36 kJ mol−1), and Na2WO4 (−1455.39 ± 12.81 kJ mol−1). Using these data with the known thermodynamic data, the equilibrium constants for reactions of leaching of scheelite and wolframite in acidic and basic media were determined. The results show that the acid route based in relatively cheap inorganic acids is desirable for scheelite digestion, despite the diffusion problems concerned with tungstic acid developed on the solid particles. Meanwhile, wolframite may be operated under favorable thermodynamics conditions by alkaline and acid processes.
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Total citations:
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Citations from 2024:
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GOST
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Martins J. I. Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach // Mineral Processing and Extractive Metallurgy Review. 2013. Vol. 35. No. 1. pp. 23-43.
GOST all authors (up to 50)
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Martins J. I. Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach // Mineral Processing and Extractive Metallurgy Review. 2013. Vol. 35. No. 1. pp. 23-43.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1080/08827508.2012.757095
UR - https://doi.org/10.1080/08827508.2012.757095
TI - Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach
T2 - Mineral Processing and Extractive Metallurgy Review
AU - Martins, J I
PY - 2013
DA - 2013/06/18
PB - Taylor & Francis
SP - 23-43
IS - 1
VL - 35
SN - 0882-7508
SN - 1547-7401
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2013_Martins,
author = {J I Martins},
title = {Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach},
journal = {Mineral Processing and Extractive Metallurgy Review},
year = {2013},
volume = {35},
publisher = {Taylor & Francis},
month = {jun},
url = {https://doi.org/10.1080/08827508.2012.757095},
number = {1},
pages = {23--43},
doi = {10.1080/08827508.2012.757095}
}
Cite this
MLA
Copy
Martins, J. I.. “Leaching Systems of Wolframite and Scheelite: A Thermodynamic Approach.” Mineral Processing and Extractive Metallurgy Review, vol. 35, no. 1, Jun. 2013, pp. 23-43. https://doi.org/10.1080/08827508.2012.757095.