Development of Separation Technique for the Production of Vanadium from Domestic Vanadium Titanomagnetite Ore

Go, Byung-Hun; Han, Yosep; Jeong, Dohyun; Kim, Seong–Min; Lee, Sujeong; Jeon, Ho-Seok

doi:10.32390/ksmer.2021.58.1.002

Cited by 9 publications

(2 citation statements)

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“…A concentration process, including crushing, grinding, and magnetic separation, was rst applied to produce a vanadium concentrate 31 . The chemical composition of the vanadium concentrate was determined by using X-ray uorescence (XRF-1800; Shimadzu, Kyoto, Japan ).…”

Section: Methodsmentioning

confidence: 99%

Vanadium Extraction from Korean Vanadiferous Titanomagnetite Ore Using Alkali Roasting: Evaluation of Optimal Conditions and Leaching Rate

kim

Yoo²,

Park

et al. 2021

Preprint

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The extraction process of vanadium from vanadiferous titanomagnetite ore deposited in Korea was investigated by combining alkali roasting and water leaching processes. The effect of Na2CO3 addition on the efficiency with which the vanadium could be leached was investigated along with an X-ray diffraction analysis. When more than 30-wt% Na2CO3 was added at 1273 K, a vanadium leaching efficiency of approximately 70% was achieved. The minimum alkali-roasting temperature was determined to be 1273 K with the addition of 30-wt% Na2CO3. Thermodynamic calculations revealed that the formation of the liquidus phase of Na2CO3 enhanced the reaction between the vanadium in the concentrate and sodium, resulting in a higher leaching efficiency for vanadium being attained. The thermodynamic calculation results were indirectly supported by the characteristic temperature determination through hot-stage microscope analysis. After 30 min of thermal treatment, a leaching efficiency for vanadium of 75% was achieved, which remained constant as the thermal treatment time was increased. Finally, the effects of the leaching time and temperature on the efficiency with which vanadium and other impurities, namely, aluminum, silicon, and sodium, could be leached was analyzed by varying the leaching time. A higher leaching efficiency was attained at higher temperatures. The leaching rate of vanadium decreased considerably after 10–20 min and subsequently remained almost constant.

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Section: Methodsmentioning

confidence: 99%

Vanadium Extraction from Korean Vanadiferous Titanomagnetite Ore Using Alkali Roasting: Evaluation of Optimal Conditions and Leaching Rate

kim

Yoo²,

Park

et al. 2021

Preprint

Self Cite

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show abstract

“…Vanadium is widely used not only in alloys but also for specialized industrial applications. Recently, a vanadium redox ow battery has emerged as a next-generation large-capacity energy storage device that will replace the existing lithium-ion battery, and the demand for vanadium is expected to increase further (Kim and Jeon 2019;Ko et al 2021). However, most of the world's reserves are stored in three countries, China, Russia, and South Africa, and more than 90% of the world's production is concentrated in these countries.…”

Section: Introductionmentioning

confidence: 99%

Establishment of Geochemical Thresholds for Vanadium Throughout Korea and at Potential Development Sites Using Geochemical Map Data

Ahn

Youm

Cho

et al. 2021

Preprint

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Geochemical maps can be used for a variety of purposes, one of which is to establish regional or local geochemical thresholds for the analyzed elements. In the case of vanadium, as industrial demand and use increases, it is necessary to expand the development of vanadium in Korea. However, the environmental management standards are insufficient. Therefore, in this study, using geochemical data, we derived geochemical threshold values for the entire country and areas with potential for the development of vanadium deposits. The regional (country-wide) threshold value was derived using logarithmic transformation of raw data (N = 23,548) of the first- and second-order stream sediments collected across the country in the late 1990s and the early 2000s. The median + 2 median absolute deviation (MAD) and Tukey inner fence (TIF) values were 116 mg/kg and 200 mg/kg, respectively. Of these, the TIF standard, which showed 0.6% of data exceeding the threshold, was judged to be appropriate for distinguishing clear enrichment or contamination of vanadium. In the case of the Geumsan and Pocheon, areas with potential for vanadium development, the TIF and median + 2 MAD values of 259 mg/kg and 218 mg/kg, respectively, can be used as the criteria for evaluating the impact of environmental pollution before and after deposit development. Likewise, by deriving threshold values of the target elements using geochemical map data, it is possible to provide basic environmental information for geochemical evaluation and follow-up management in advance during large-scale site development.

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Establishment of geochemical thresholds for vanadium throughout Korea and at potential development sites using geochemical map data

Ahn

Youm

Cho

et al. 2022

Environ Geochem Health

View full text Add to dashboard Cite

Geochemical maps can be used for a variety of purposes, one of which is to establish regional or local geochemical thresholds for the analyzed elements. In the case of vanadium, as industrial demand and use increases, it is necessary to expand the development of vanadium in Korea. However, the environmental management standards are insu cient. Therefore, in this study, using geochemical data, we derived geochemical threshold values for the entire country and areas with potential for the development of vanadium deposits. The regional (country-wide) threshold value was derived using logarithmic transformation of raw data (N = 23,548) of the rst-and second-order stream sediments collected across the country in the late 1990s and the early 2000s. The median + 2 median absolute deviation (MAD) and Tukey inner fence (TIF) values were 116 mg/kg and 200 mg/kg, respectively. Of these, the TIF standard, which showed 0.6% of data exceeding the threshold, was judged to be appropriate for distinguishing clear enrichment or contamination of vanadium. In the case of the Geumsan and Pocheon, areas with potential for vanadium development, the TIF and median + 2 MAD values of 259 mg/kg and 218 mg/kg, respectively, can be used as the criteria for evaluating the impact of environmental pollution before and after deposit development. Likewise, by deriving threshold values of the target elements using geochemical map data, it is possible to provide basic environmental information for geochemical evaluation and follow-up management in advance during large-scale site development.

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Development of Separation Technique for the Production of Vanadium from Domestic Vanadium Titanomagnetite Ore

Cited by 9 publications

References 0 publications

Vanadium Extraction from Korean Vanadiferous Titanomagnetite Ore Using Alkali Roasting: Evaluation of Optimal Conditions and Leaching Rate

Vanadium Extraction from Korean Vanadiferous Titanomagnetite Ore Using Alkali Roasting: Evaluation of Optimal Conditions and Leaching Rate

Establishment of Geochemical Thresholds for Vanadium Throughout Korea and at Potential Development Sites Using Geochemical Map Data

Establishment of geochemical thresholds for vanadium throughout Korea and at potential development sites using geochemical map data

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