Recovery of Fe and V via selective reduction–magnetic separation of vanadium-titanium magnetite concentrate

• Autorzy: Liu Liwei , Li Guofeng , Zhao Libing , Li Jinpeng , Li Yanfeng

Identyfikatory

DOI

10.37190/ppmp/144059

• Języki publikacji: EN

Abstrakty

EN

With the aim of separating Fe and V, a vanadium-titanium magnetite concentrate was selectively reduced, followed by magnetic separation. The processes accompanying reduction of the vanadium-titanium magnetite concentrate were investigated using thermodynamic simulation, experiments, scanning electron microscopy, and electron probe microanalysis. Appropriate reduction conditions and controlling the amount of CaCO3 promoted the reduction of Fe-containing minerals to metallic Fe. V was released from magnetite, ilmenite, and titanomagnetite, and was inhibited to reduce to metallic V, leading to V enrichment in the non-magnetic products in the form of oxides. Moreover, the Fe particles wrapped the slag phase when the amount of CaCO3 exceeded 8%, which is unfavourable for the magnetic separation of Fe and V. Magnetic products with an Fe content of 87.19%, Fe recovery of 82.62%, V content of 0.09% and non-magnetic products with a V content of 1.00% and a V recovery of 85.49% were obtained when the vanadium-titanium magnetite concentrate was reduced for 100 min at 1623 K with a C/O molar ratio of 2.5 and 8% CaCO3, followed by separating at a magnetic field strength of 85 mT.

Słowa kluczowe

EN

vanadium-titanium magnetite concentrate; selective reduction; magnetic separation; Fe separation; V separation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 1
• Strony: 50--62
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Liu Liwei

• College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, China

• https://orcid.org/0000-0002-6237-9859

autor

Li Guofeng

• College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, China
• [e-mail]

• https://orcid.org/0000-0003-1430-3750

autor

Zhao Libing

• College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, China

autor

Li Jinpeng

• Mine Design Co., Ltd. of HBIS, Tangshan 063700, China

autor

Li Yanfeng

• College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, China

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