Study on Vanadium Extraction from Leachate of Low Grade Vanadium Ore by Ion Exchange Method

ZHAO Xiaoyi; CHENG Qian; WANG Wangbo; NING Xinxia; CHENG Wenkang; CAO Huan; KANG Min; WANG Yong

doi:10.13779/j.cnki.issn1001-0076.2022.03.010

2022 Vol. 42, No. 3

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(3): 69-74

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ZHAO Xiaoyi, CHENG Qian, WANG Wangbo, NING Xinxia, CHENG Wenkang, CAO Huan, KANG Min, WANG Yong. Study on Vanadium Extraction from Leachate of Low Grade Vanadium Ore by Ion Exchange Method[J]. Conservation and Utilization of Mineral Resources, 2022, 42(3): 69-74. doi: 10.13779/j.cnki.issn1001-0076.2022.03.010

Citation:

ZHAO Xiaoyi, CHENG Qian, WANG Wangbo, NING Xinxia, CHENG Wenkang, CAO Huan, KANG Min, WANG Yong. Study on Vanadium Extraction from Leachate of Low Grade Vanadium Ore by Ion Exchange Method[J]. Conservation and Utilization of Mineral Resources, 2022, 42(3): 69-74. doi: 10.13779/j.cnki.issn1001-0076.2022.03.010

Study on Vanadium Extraction from Leachate of Low Grade Vanadium Ore by Ion Exchange Method

1.
Xi'an Northwest Geological Institute of Nonferrous Metals Co. Ltd., Xi'an 710054, China
2.
Engineering & Technology Center for Comprehensive Utilization of Mineral Resource of Shaanxi Province, Xi'an 710054, China

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Corresponding author: CHENG Qian

Received Date: 01 January 2022

Publish Date: 25 June 2022

Abstract

Abstract

The ion exchange method was used to study the extraction process of vanadium from the leaching solution of stone coal vanadium ore obtained by mixing acid, heat preservation, maturation and heap leaching. The influence of resin type, pH value of solution and dynamic adsorption on vanadium adsorption rate was mainly investigated. The experimental results showed that the vanadium-containing leaching solution was neutralized and oxidized to obtain the pre-exchange solution by adjusting pH=1.88, and the anion exchange resin D201 with better adsorption performance was selected for dynamic adsorption. The saturated adsorption capacity of V₂O₅ was 217.66 mg/mL wet resin. The dynamic desorption of D201 was carried out with 4%NaOH + 4%NaCl. The maximum content of V₂O₅ in the desorption solution was 119.49 g/L. When the volume ratio of desorption solution (mL) to wet resin (mL) was 3.7, the desorption rate of resin was over 99%. The obtained analytical solution was prepared by one-step precipitation of vanadium with acidic ammonium salt to obtain high-purity V₂O₅ products with a grade of over 98%. This experiment provides a convenient operation and low cost of vanadium extraction process. The resin D201 has the advantages of large adsorption capacity, high adsorption rate and large treatment capacity for vanadium. The vanadium-rich analytical solution does not need purification treatment. The ammonium salt one-step precipitation method is used to obtain qualified products, and the difficulty of wastewater treatment caused by the extraction process is avoided. The process is highly adaptable.
- stone coal vanadium ore /
- ion exchange method /
- anion exchange resin D201

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References

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