Separation and purification of light rare earth elements from chloride media using P204 and Cyanex272 in sulfonated kerosene under non-saponification conditions

• Autorzy: Fan Peiqiang , Zhang Wenjie , Tong Xiong , Xie Xian , Xie Ruiqi , Song Qiang , Du Yunpeng , Cao Yang

Identyfikatory

DOI

10.37190/ppmp/172444

• Języki publikacji: EN

Abstrakty

EN

The extraction of light rare earths (Pr and Nd) from chloride medium was investigated using a mixture of di(2-ethylhexyl) phosphoric acid (P204) and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272) in sulfonated kerosene. The P204+Cyanex272 system exerted a synergistic effect on the separation of light rare earths, and the separation coefficient was higher than when P204 and Cyanex272 were used as extractants alone. The separation coefficient of Pr and Nd in the extraction system reached 1.75 when the pH of the aqueous phase material solution was approximately 2.5, and 1.5 mol/L hydrochloric acid as a stripping agent effectively eluted the rare earth ions in the loaded organic phase. Combining the slope method, infrared spectroscopy, and nuclear magnetic resonance spectroscopy, we explored the mechanism of the extracted Nd and Pr into the organic phase complex, and finally entered the organic phase with Re(HA₂)₂B. The P-O-H bond and P=O bond in the extractant P204 and Cyanex272 formed a coordination bond with Re³⁺. Therefore, this extraction method also provides a reference for a more environmentally friendly and efficient procedure for separation and purification of light rare earth elements Pr and Nd.

Słowa kluczowe

EN

P 204; Cyanex 272; light rare earths; extraction; mechanism

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 6
• Strony: art. no. 172444
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Fan Peiqiang

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Zhang Wenjie

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Tong Xiong

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Xie Xian

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Xie Ruiqi

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Song Qiang

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Du Yunpeng

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
• Yunnan Engineering Research Center for Metal Tailings Resource Utilization, Kunming 650093, Yunnan, China

autor

Cao Yang

• School of Chemistry and Resources Engineering, Honghe University, Mengzi 661199, China

Bibliografia

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