Coupling effect between magnetic wires and its influence on high gradient magnetic separation performance

• Autorzy: Jiang Yaxiong , Zeng Jianwu , Cao Mengbing , Yu Weijun , Xie Enlong , Chen Luzheng

Identyfikatory

DOI

10.37190/ppmp/183620

• Języki publikacji: EN

Abstrakty

EN

High gradient magnetic separation (HGMS) is effective for the separation of weakly magnetic minerals, and this method is achieved through the use of matrix, which is made of huge numbers of rod wires. So that the coupling effect of magnetic field and flow field between wires has a marked effect on the HGMS performance. In the investigation, the coupling effect between magnetic wires and its influence on high gradient magnetic separation performance were theoretically described and simulated using COMSOL Multiphysics. It is found that the magnetic field round a wire would be affected by the neighboring wires, and then a coupling effect of magnetic field between wires was produced, increasing the magnetic induction intensity on the upstream and downstream of wire surface. And the coupling effect of flow field could increase the slurry velocity at the regions of the wire surface with azimuth angles of 0° and 90°, which is beneficial for the selective capture of wire. These simulated results were basically validated with the experimental separation, using an innovative Magnetic Capture Analysis Method. It is found that the wire spacing has significant effect on the coupling effect of magnetic wires, and a critical spacing for wires could achieve an excellent coupling effect, which is beneficial for the improvement of HGMS performance. This investigation contributes to improve HGMS performance in concentrating fine weakly magnetic ores.

Słowa kluczowe

EN

high gradient magnetic separation; matrix; coupling effect; weakly magnetic particles

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 1
• Strony: art. no. 183620
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Jiang Yaxiong

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

autor

Zeng Jianwu

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

autor

Cao Mengbing

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

autor

Yu Weijun

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

autor

Xie Enlong

• Yunnan Gold Mining Group Co., Ltd

autor

Chen Luzheng

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

Bibliografia

• BEDESCU, V., MURARIU, V., ROTARIU, O., REZLEACU, N., 1996. A new molding of the initial buildup evolution on a wire in an axial HGMS filter. J. Magn. Magn. Mater. 163, 225–231.
• CHEN, L. Z., DING, L., ZHANG, H. F., HUANG, J. X., 2014. Slice matrix analysis for combinatorial optimization of rod matrix in PHGMS. Miner. Eng. 58, 104-107.
• CHEN, L., LIU, W., ZENG, J.; REN, P., 2017. Quantitative investigation on magnetic capture of single wires in pulsating HGMS. Powder Technol. 313, 54–59.
• CHEN, L. Z., YANG, R. Y., GUANG, C. P., ZENG, J. W., SHAO, Y. H., HUANG, L. Y., 2016. Enhanced pulsating HGMS of fine hematite with combinative rod matrix. Sep. Sci. Technol. 51, 564-568.
• Hu, Z. C., Lu, D. F., Zheng, X. Y., Wang, Y. H., Xue, Z. X., Xu, S. H., 2023. Development of a high-gradient magnetic separator for enhancing selective separation: A review. Powder Technol. 421, 118435
• LI, W.B., HAN, Y.X., XIE, R.Q., GONG, E.P., 2018. A preliminary investigation into separating performance and magnetic field characteristic analysis based on a novel matrix. Minerals 8(3), 94.
• PADMANABHAN, N., SREENIVAS, T., 2011. Process parametric study for the recovery of very fine size uranium values on super-conducting high gradient magnetic separator. Adv. Powder Technol. 22, 131–137.
• XIONG, D.H., 2011. Review and prospect of SLon magnetic separators on raising ilmenite recovery. Metal Mine. 424 (10), 1–8 (in Chinese).
• ZENG, J. W., TONG, X., REN, P., CHEN, L. Z., 2019a. Theoretical description on size matching for magnetic element to independent particle in high gradient magnetic separation. Miner. Eng. 135, 74-82.
• ZENG, J. W., TONG, X., YI, F., CHEN, L. Z., 2019b. Selective Capture of Magnetic Wires to Particles in High Gradient Magnetic Separation. Minerals, 9(9), 509.
• ZHENG, X., WANG, Y., LU, D., 2015. Study on capture radius and efficiency of fine weakly magnetic minerals in high gradient magnetic field. Miner. Eng. 74, 79–85.