Study on fluoride fixation effect of Bayan Obo rare earth iron ore and three sodium agents under microwave irradiation

• Autorzy: Guo Jing , Wen Ming , Li Jie , Hong Xunhai , Zhang Wenhao , Wang Yonglun

Identyfikatory

DOI

10.37190/ppmp/144121

• Języki publikacji: EN

Abstrakty

EN

To investigate the fluorine fixation of Bayan Obo rare-earth iron ores in beneficiation and metallurgy processes, the effect of three sodium agents, namely, sodium hydroxide, sodium carbonate, and sodium bicarbonate, on fluorine fixation under the action of microwaves was investigated using Xray diffraction, chemical detection, and orthogonal experiments. The effects of different types of sodium, roasting temperatures, sodium ratios, and roasting times on the fluorine fixation rate were evaluated. Results show that compared with conventional roasting, the fluorine fixation efficiency of Bayan Obo rare-earth iron ore under the action of microwave is superior after the formulation of the sodium agent, which is crucial for the study. Among the three sodium agents, the fluorine fixation effect of NaHCO3 can be used as the preferred sodium agent. Orthogonal experiments showed that the factors influencing the magnitude of the fluorine fixation rate are the roasting temperature, sodium agent ratio, and roasting constant temperature time in the order of priority. The optimal conditions for the fluorine fixation process are the microwave roasting temperature of 973.15 K, sodium bicarbonate ratio of 40%, and roasting time of 60 min. The highest fluorine fixation rate of 86.72% can be obtained. The findings of this study can provide a reference for the development of green and economic recovery processes for Bayan Obo rare-earth iron ores.

Słowa kluczowe

EN

Bayan Obo rare earth iron ore; microwave roasting; sodium agent fluoride fixation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 1
• Strony: 63--76
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Guo Jing

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China
• JINGNENG Holding Group, Datong 037300, China

autor

Wen Ming

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China

autor

Li Jie

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China

autor

Hong Xunhai

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China

autor

Zhang Wenhao

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China

autor

Wang Yonglun

• Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology，Baotou 014010，China

Bibliografia

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