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Metals
Volume 15
Issue 2
10.3390/met15020133
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Article

Phase Evolution of Molybdenum Concentrate During the Vacuum Distillation Process

by
Haoguang Mi
1,2,3,
Qian Ren
1,2,3 and
Fei Wang
1,2,3,*
1
Yunnan Provincial Key Laboratory of Nonferrous Vacuum Metallurgy, Kunming 650093, China
2
National Engineering Research Center of Vacuum Metallurgy, Kunming 650093, China
3
Faulty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
*
Author to whom correspondence should be addressed.
Metals 2025, 15(2), 133; https://doi.org/10.3390/met15020133
Submission received: 6 January 2025 / Revised: 26 January 2025 / Accepted: 27 January 2025 / Published: 28 January 2025
(This article belongs to the Special Issue Separation, Purification and Extraction of Metals from Primary and Secondary Resources)
Versions Notes

Abstract

This paper presents a method for purifying molybdenum concentrate through vacuum distillation and examines the phase evolution of MoS₂ during the process. First, the forms in which impurities exist in molybdenum concentrate and the feasibility of their volatilization are analyzed, while the structural changes of MoS₂ in a vacuum environment are discussed and verified through theoretical calculations. Next, experiments are conducted to study the effects of holding temperature, holding time, and other influencing factors on the transformation process of the molybdenum concentrate. The feasibility of impurity volatilization and the structural evolution of MoS₂ are further evaluated through experimental analysis of the condensates and residues in the temperature interval of 1273 K–1623 K. The results demonstrate that impurities can be effectively removed without compromising the natural structure of MoS₂.
Keywords: molybdenum concentrate; vacuum distillation; metal sulfide molybdenum concentrate; vacuum distillation; metal sulfide

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MDPI and ACS Style

Mi, H.; Ren, Q.; Wang, F. Phase Evolution of Molybdenum Concentrate During the Vacuum Distillation Process. Metals 2025, 15, 133. https://doi.org/10.3390/met15020133

AMA Style

Mi H, Ren Q, Wang F. Phase Evolution of Molybdenum Concentrate During the Vacuum Distillation Process. Metals. 2025; 15(2):133. https://doi.org/10.3390/met15020133

Chicago/Turabian Style

Mi, Haoguang, Qian Ren, and Fei Wang. 2025. "Phase Evolution of Molybdenum Concentrate During the Vacuum Distillation Process" Metals 15, no. 2: 133. https://doi.org/10.3390/met15020133

APA Style

Mi, H., Ren, Q., & Wang, F. (2025). Phase Evolution of Molybdenum Concentrate During the Vacuum Distillation Process. Metals, 15(2), 133. https://doi.org/10.3390/met15020133

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