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Article
Metallurgy & Metallurgical Engineering
Longjie Liu et al.
Summary: This research investigated the water leaching of roasted vanadium slag and studied the effects of leaching parameters on the process. It also explored the purification of the vanadium solution obtained from the leaching process. The results showed that vanadium can be effectively recovered from the slag with a high recovery efficiency of 96.9% under optimal leaching conditions. Additionally, silicon can be precipitated to low levels without significant vanadium loss during solution purification, and the precipitation of ammonium vanadate achieved a high efficiency of >99%.
Article
Engineering, Chemical
Xinran Zhu et al.
Summary: In this study, a combination of oxidation roasting (without salt) and acid leaching was used to extract vanadium from V-bearing shale. Pilot scale testwork confirmed that the process achieved over 85% vanadium extraction. The phase transformation and microstructure evolution during oxidation roasting were found to have significant effects on the subsequent leach process.
MINERALS ENGINEERING
(2023)
Review
Engineering, Environmental
Yarui An et al.
Summary: This paper reviews the sources and characteristics of vanadium slag, and comprehensively compares and discusses various treatment methods. The roasting assisted leaching process is found to be the most effective way to extract vanadium from vanadium slag.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Materials Science, Multidisciplinary
Zhixiang Wang et al.
Summary: A new method of sulfuric acid cyclic leaching was proposed to selectively leach vanadium from vanadium titanomagnetite pellets. Cyclic leaching yielded higher vanadium leaching rates and lower iron and titanium leaching rates compared to conventional heap leaching. Under optimal cyclic leaching conditions, the leaching rates of vanadium, iron, and titanium were 80.28%, 1.39%, and 1.72% respectively. The study also analyzed the valence states of vanadium and iron in the pellets before and after leaching, as well as the main phases in the pellets.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Yuting Xiong et al.
Summary: This study optimized the leaching conditions of converter vanadium slag by response surface methodology and investigated the direct sulfuric acid leaching kinetics of vanadium from the slag. The experimental results showed that the optimal leaching conditions were an initial sulfuric acid concentration of 4 mol/L, a reaction temperature of 90°C, a reaction duration of 8 h, and a liquid to solid ratio of 8 mL/g with a particle size of vanadium slag below 20 μm. Under the optimum conditions, the vanadium leaching efficiency was 86.09%. The kinetics analysis revealed that both the chemical reaction and inner diffusion controlled the leaching process, with an apparent activation energy of 17.63 kJ/mol and a reaction order of sulfuric acid of 0.78.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Maxwell Drexler et al.
Summary: This article investigates the nanoscale distribution patterns of vanadium in phyllosilicates and how they affect leaching recoveries. The presence of nanoscale vanadium oxide phases within the phyllosilicate lattice correlates with higher leach recovery, while crystallographic substitutions without oxide intercalations result in negligible leaching recoveries. The findings shed light on the variability in leaching behavior of ore minerals and the difficulty in predicting process outcomes based on geological inputs.
MINERALS ENGINEERING
(2023)
Review
Metallurgy & Metallurgical Engineering
Feng Gao et al.
Summary: This review discusses the production, clean production, and current status of the vanadium industry, providing important information for researchers.
The sustainable development of the vanadium industry has significant impacts on multiple industries.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Engineering, Chemical
Ziyang Chen et al.
Summary: A novel process of no-grinding and no-roasting direct activated acid leaching under atmospheric pressure was proposed for clay vanadium ore. The addition of new activator MF improved the leaching efficiency of vanadium. The study investigated the effects of main factors on vanadium leaching and found optimal conditions for high leaching efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Molly R. Radwany et al.
Summary: This article explores the geometallurgy and process mineralogy of sandstone-hosted ore deposits in the Paradox Basin in the United States. Despite their importance as major resources of uranium and vanadium, these deposits have received little study. The study reveals that uranium is mainly locked within insoluble minerals, while poor solubility of vanadium-rich phyllosilicates is the main barrier to optimal recovery. This research has implications for the recovery of vanadium from other ore deposit types as well.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
Xujie Hui et al.
Summary: The calcification roasting process for vanadium extraction offers advantages in terms of environmental protection, cost-effectiveness of roasting additives, and the reutilization of tailings. Carbonation leaching and sulfuric acid leaching are both effective methods for extracting vanadium from the calcification roasted slag, but they differ in terms of efficiency, parameters, and kinetics.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Jae-chun Lee et al.
Summary: This article provides a comprehensive review on the metallurgical treatments of vanadium bearing slags, highlighting the importance of developing sustainable metallurgical processes. The research discusses traditional and modern methods for treating vanadium bearing slags, as well as promising technologies for future focus. Recommendations are made for separating vanadium from interfering elements in leach solutions and advancing extractive metallurgy techniques.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Zihui Dong et al.
Summary: A cleaner process for co-extracting vanadium, titanium, and chromium from vanadium slag using oxalic acid hydrothermal leaching with the synergy of Fe powder was proposed in this paper. The process not only effectively leaches the three metals, but also simplifies the treatment process significantly and reduces energy consumption.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2021)
Article
Engineering, Environmental
Wang Li et al.
Summary: Selective leaching of vanadium and separation of iron from red mud using oxalic acid and sodium sulfite were studied, showing that over 90% of vanadium could be selectively leached under suitable conditions. The leaching mechanism was analyzed with XRD, SEM-EDS, thermodynamic theory, and leaching kinetics, demonstrating controlled diffusion and chemical reaction processes for vanadium and iron leaching, respectively. The apparent activation energy of vanadium and iron were determined and the presence of stable complexes in the leaching solution was identified.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Xuexin Chen et al.
Article
Engineering, Chemical
Baijun Yan et al.
MINERALS ENGINEERING
(2018)
Review
Environmental Sciences
Muhammad Imtiaz et al.
ENVIRONMENT INTERNATIONAL
(2015)
Article
Materials Science, Multidisciplinary
Yang-jia Hu et al.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2012)
Article
Metallurgy & Metallurgical Engineering
Yi-Min Zhang et al.
Article
Engineering, Environmental
A. A. Nayl et al.
JOURNAL OF HAZARDOUS MATERIALS
(2009)
Article
Engineering, Environmental
Zafar Iqbal Zafar et al.
CHEMICAL ENGINEERING JOURNAL
(2007)
Article
Metallurgy & Metallurgical Engineering
M Ashraf et al.
Review
Engineering, Chemical
RR Moskalyk et al.
MINERALS ENGINEERING
(2003)
