Improvement of High Gradient Magnetic Separator with Horizontal Magnetic Field and Its Application for Ilmenite in Panxi Region

LIU Jian Guo; DAI Huixin; YU Lili; FENG Jiaying; WANG Zaihua

doi:10.13779/j.cnki.issn1001-0076.2024.03.012

2024 Vol. 44, No. 3

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Article navigation > Conservation and Utilization of Mineral Resources > 2024 > 44(3): 109-116

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LIU Jian Guo, DAI Huixin, YU Lili, FENG Jiaying, WANG Zaihua. Improvement of High Gradient Magnetic Separator with Horizontal Magnetic Field and Its Application for Ilmenite in Panxi Region[J]. Conservation and Utilization of Mineral Resources, 2024, 44(3): 109-116. doi: 10.13779/j.cnki.issn1001-0076.2024.03.012

Citation:

LIU Jian Guo, DAI Huixin, YU Lili, FENG Jiaying, WANG Zaihua. Improvement of High Gradient Magnetic Separator with Horizontal Magnetic Field and Its Application for Ilmenite in Panxi Region[J]. Conservation and Utilization of Mineral Resources, 2024, 44(3): 109-116. doi: 10.13779/j.cnki.issn1001-0076.2024.03.012

Improvement of High Gradient Magnetic Separator with Horizontal Magnetic Field and Its Application for Ilmenite in Panxi Region

1.
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, Guangdong, China
3.
State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals, Guangzhou 510650, Guangdong, China
4.
Guangdong Key Laboratory of Mineral Resources Development and Comprehensive Utilization, Guangzhou 510650, Guangdong, China

More Information

Corresponding author: DAI Huixin, dhx6688@sina.com

Received Date: 15 March 2024

Publish Date: 15 June 2024

Abstract

Abstract

The High Gradient Magnetic Separator (HGMS) with a horizontal magnetic field has many characteristics, including resistance to corrosion of the magnetic system and a low propensity for the magnetic medium to become blocked. Consequently, the HGMS has a significant effect on the rough separation of ilmenite. However, the limited spacing of the magnetic system, the narrow width of the sorting ring, and the small volume of the magnetic medium result in low processing capacity and high energy consumption. Therefore, equipment improvements are necessary to enhance the processing capacity and reduce energy consumption. Based on the SSS−II−2750 horizontal magnetic field HGMS, the separation ring system was enhanced. The thickness of the separation ring was increased in the height direction of the magnetic system, and the inner and outer double rings were divided. The medium box equipped with a coarse medium rod in the inner ring adsorbed coarse grain and strong magnetic target minerals, while the medium box with a fine medium rod in the outer ring adsorbed fine grain and micro−fine grain with weak magnetic target minerals, achieving cascade sorting. At the same time, both inner and outer rings were equipped with ore unloading devices to realize layered ore unloading, effectively improving the ore unloading rate of the target minerals. The effect of the first stage roughing process of ilmenite in a titanium separation plant in the Panxi area was investigated. The improved HGMS with a horizontal magnetic field yielded titanium crude concentrates with a TiO₂ grade of 18.55% and a recovery of 85.78%, under conditions of a magnetic field strength of 0.45 T, vertical ring speed of 6.2 r/min, stroke length of 10 mm, stroke frequency of 120 r/min, ore feed rate of 160 t/h, and raw ore TiO₂ grade of 10.42%. Compared with the pre−improvement and vertical magnetic field, the improved HGMS achieved a similar titanium crude concentrate grade but increased the recovery rate by 8.43 and 13.63 percentage points, respectively. The improved HGMS with a horizontal magnetic field demonstrated a good sorting effect, and the lowest excitation energy consumption among the three devices (0.49 kWh/t). The research indicated that the improved equipment has a large processing capacity and low energy consumption, achieving the objective of equipment enhancement.
- horizontal magnetic field /
- HGMS /
- ilmenite /
- magnetic separation

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References

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