Study on the Separation and Recovery of Re(Ⅶ) from Molybdenum Concentrate Oxygen-pressure Leaching Solution by D201 Resin

FU Zhongqiao; HOU Yanrui; HUANG Jiahao; CHENG De; LI Guanghui

doi:10.13779/j.cnki.issn1001-0076.2022.06.015

2022 Vol. 42, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(6): 115-122

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FU Zhongqiao, HOU Yanrui, HUANG Jiahao, CHENG De, LI Guanghui. Study on the Separation and Recovery of Re(Ⅶ) from Molybdenum Concentrate Oxygen-pressure Leaching Solution by D201 Resin[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 115-122. doi: 10.13779/j.cnki.issn1001-0076.2022.06.015

Citation:

FU Zhongqiao, HOU Yanrui, HUANG Jiahao, CHENG De, LI Guanghui. Study on the Separation and Recovery of Re(Ⅶ) from Molybdenum Concentrate Oxygen-pressure Leaching Solution by D201 Resin[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 115-122. doi: 10.13779/j.cnki.issn1001-0076.2022.06.015

Study on the Separation and Recovery of Re(Ⅶ) from Molybdenum Concentrate Oxygen-pressure Leaching Solution by D201 Resin

School of Minerals Processing and Bioengineering, Central South University, Changsha 410012, Hunan, China

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Corresponding author: LI Guanghui, liguanghuigroup@outlook.com

Received Date: 07 June 2022

Publish Date: 26 December 2022

Abstract

Abstract

In order to develop a low-cost and environmentally friendly ion exchange process to recover rhenium, a modified D201 anion exchange resin was used to separate and recover rhenium (Ⅶ) from the oxygen-pressure leaching solution of molybdenum concentrate based on the difference in ionic forms of molybdenum-rhenium ions in acidic systems. The effects of initial pH, rotating speed, resin relative dosage, adsorption temperature and adsorption time on the recovery of rhenium were investigated, and the leachate and modified resin were characterized and analyzed by Raman, FTIR and SEM. The results showed that under the conditions of initial pH=1.70, speed 300 r/min, adsorption temperature of 20 ℃, adsorption time of 60 min and resin dosage of 0.002 g/mL, the adsorption rate of rhenium reached 98.81%, while the adsorption rates of molybdenum, iron and cerium were only 0.44%, 1.04% and 1.25%, respectively. The maximum separation coefficients of rhenium from molybdenum, iron and cerium were 262.25, 104.60 and 89.02, respectively. In the actual oxygen pressure leaching solution, molybdenum, iron and cerium mainly exist in the form of cations such as MoO₂²⁺, Fe³⁺ and Ce³⁺, and rhenium exists in the form of ReO₄^- anion. The modified D201 anion exchange resin selectively adsorbs on rhenium ions through electrostatic attraction and chelation to achieve effective separation of rhenium from molybdenum, iron and cerium.
- rhenium /
- molybdenum /
- molybdenum-rhenium separation /
- adsorption /
- anion exchange /
- D201 resin

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References

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