Selective Vanadium Separation from V-Bearing Roasted Ore

In this study, a cleaner process of water leaching was proposed to extract vanadium from V-bearing roasted ore with V 2 O 5 content of 1.06 wt.%, and the main mineral compositions of the roasted ore were quartz, gypsum, misenite and munirite. The effects of water leaching parameters such as leaching...

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Bibliographic Details
Published inJOM (1989) Vol. 75; no. 10; pp. 4376 - 4384
Main Authors Xiao, Junhui, Zhong, Nanlan, Zou, Kai, Cheng, Renju, Xiong, Wenliang
Format Journal Article
LanguageEnglish
Published New York Springer US 01.10.2023
Springer Nature B.V
Subjects
Calcification
Chemical reaction control
Chemical reactions
Chemistry/Food Science
Coal
Decomposition
Earth Sciences
Efficiency
Engineering
Environment
Gypsum
Investigations
Kinetic theory
Kinetics
Leaching
Oxidation
Particle size
Physics
Reaction control
Sodium
Stirring
Sulfuric acid
Technical Article
Vanadium pentoxide
Shaanxi China
Beijing China
China
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Summary:In this study, a cleaner process of water leaching was proposed to extract vanadium from V-bearing roasted ore with V 2 O 5 content of 1.06 wt.%, and the main mineral compositions of the roasted ore were quartz, gypsum, misenite and munirite. The effects of water leaching parameters such as leaching temperature, leaching time, liquid-solid ratio, leaching agents, stirring intensity and material particle size on vanadium recovery were thoroughly researched in the experimental procedure, as well as the vanadium leaching kinetics in the water leaching process. The results show that V 2 O 5 leaching efficiency can reach 91.29%, and V 2 O 5 content of leaching residue decreased to 0.08 wt.% under the following conditions: roasted ore particle size of − 0.1 mm, leaching temperature of 333 K, leaching time of 150 min, (NH 4 ) 6 Mo 7 O 24 ·4H 2 O dosage of 6 wt.%, liquid-solid ratio of 5:1 mL/g and stirring intensity of 200 rpm. The main findings of vanadium leaching kinetics show that diffusion and chemical reaction control vanadium’s action mode in the water leaching process. According to the kinetic model, the apparent activation energy was 32.74 kJ/mol and the frequency factor A  = 8.414 s − 1 , which was consistent with standard kinetic theory and experimental results.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-023-06060-6