Effective Extraction of Vanadium from Bauxite-Type Vanadium Ore Using Roasting and Leaching

A new bauxite-type vanadium ore with a grade of 0.96% V2O5 was found in Hanzhong, China, having quartz, illite, and calcite as the main mineral constituents and vanadium that mainly occurs in the aluminosilicate lattice of illite by replacing Al3+ with V3+ in isomorphism form. In this study, a novel...

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Published inMetals (Basel ) Vol. 11; no. 9; p. 1342
Main Authors Zou, Kai, Xiao, Junhui, Liang, Guanjie, Huang, Wenxiao, Xiong, Wenliang
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2021
Subjects
Additives
Aluminosilicates
Aluminum silicates
Ammonium molybdate
Bauxite
bauxite-type vanadium ore
Bayer process
Calcification
Calcite
Coal
Curing
Efficiency
Gases
Gibbs free energy
High temperature
Illite
Isomorphism
Laboratories
Leaching
Low temperature
Particle size
Phase transitions
Pollution
Roasting
Salt
Sodium
Sulfation
Sulfation roasting
Sulfuric acid
Vanadium
China
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Abstract A new bauxite-type vanadium ore with a grade of 0.96% V2O5 was found in Hanzhong, China, having quartz, illite, and calcite as the main mineral constituents and vanadium that mainly occurs in the aluminosilicate lattice of illite by replacing Al3+ with V3+ in isomorphism form. In this study, a novel process of low-temperature sulfating roasting–water leaching is presented to extract vanadium from the bauxite-type vanadium ore. Addition of sulfuric acid enhanced the conversion of vanadium to NaVO3 in the sulfating roasting process, and addition of ammonium molybdate improved the leaching efficiency in water leaching. The results showed that a leaching efficiency of 90.33% was obtained under optimal test conditions. The calculation results of standard Gibbs free energy (ΔrGθ) further verified that the formation of NaVO3 is feasible.
AbstractList A new bauxite-type vanadium ore with a grade of 0.96% V2O5 was found in Hanzhong, China, having quartz, illite, and calcite as the main mineral constituents and vanadium that mainly occurs in the aluminosilicate lattice of illite by replacing Al3+ with V3+ in isomorphism form. In this study, a novel process of low-temperature sulfating roasting–water leaching is presented to extract vanadium from the bauxite-type vanadium ore. Addition of sulfuric acid enhanced the conversion of vanadium to NaVO3 in the sulfating roasting process, and addition of ammonium molybdate improved the leaching efficiency in water leaching. The results showed that a leaching efficiency of 90.33% was obtained under optimal test conditions. The calculation results of standard Gibbs free energy (ΔrGθ) further verified that the formation of NaVO3 is feasible.
Author Xiao, Junhui
Liang, Guanjie
Huang, Wenxiao
Xiong, Wenliang
Zou, Kai
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Snippet A new bauxite-type vanadium ore with a grade of 0.96% V2O5 was found in Hanzhong, China, having quartz, illite, and calcite as the main mineral constituents...
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StartPage 1342
SubjectTerms Additives
Aluminosilicates
Aluminum silicates
Ammonium molybdate
Bauxite
bauxite-type vanadium ore
Bayer process
Calcification
Calcite
Coal
Curing
Efficiency
Gases
Gibbs free energy
High temperature
Illite
Isomorphism
Laboratories
Leaching
Low temperature
Particle size
Phase transitions
Pollution
Roasting
Salt
Sodium
Sulfation
Sulfation roasting
Sulfuric acid
Vanadium
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Title Effective Extraction of Vanadium from Bauxite-Type Vanadium Ore Using Roasting and Leaching
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