Comparative investigation on capture characteristics of chalcopyrite and hematite in PHGMS process

• Autorzy: Tao Mingyu , Chen Luzheng , Dai Pulin , Xue Zixing , Chen Hang

Identyfikatory

DOI

10.37190/ppmp/185334

• Języki publikacji: EN

Abstrakty

EN

Pulsating high-gradient magnetic separation (PHGMS) is a promising method of separating chalcopyrite from other minerals with similar floatability. However, the capture characteristics of chalcopyrite in the PHGMS process remain poorly understood. In this study, the difference in the capture capacity of chalcopyrite and hematite, a typical weak magnetic mineral, was theoretically compared. The effects of the key operating parameters, i.e., magnetic induction, slurry flow rate, and magnetic wire diameter, on the capture difference between chalcopyrite and hematite, were investigated through experimental verification. The comparison results showed that chalcopyrite shared a similar capture trend with hematite. The capture mass weight of the matrix decreased with an increase in the pulsating frequency, slurry flow rate, and magnetic wire diameter, but it increased with improved magnetic induction. However, chalcopyrite exhibited a smaller capture mass weight due to its lower susceptibility, which required a higher magnetic induction (1.4 T), slower flow rate (1.5 cm/s), lower pulsating frequency (150 rpm), and smaller matrix diameter (1 mm) for higher efficient recovery of chalcopyrite. As the magnetic induction increased from 0.8 T to 1.6 T, the chalcopyrite recovery improved from 65.84% to 75.80%. These findings provide valuable information for improving the utilization of chalcopyrite.

Słowa kluczowe

EN

pulsating high-gradient magnetic separation; static buildup model; chalcopyrite; hematite; matrix capture

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 1
• Strony: art. no. 185334
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Tao Mingyu

• Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China

autor

Chen Luzheng

• Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China

autor

Dai Pulin

• Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China

autor

Xue Zixing

• Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China

autor

Chen Hang

• Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China

Bibliografia

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