Dephosphorization of a High−phosphorus Iron Ore by Magnetic Roasting−leaching Process

WANG Shaoxing; NING Guodong; LIU Yingzhi; LI Yanjun

doi:10.13779/j.cnki.issn1001-0076.2024.01.011

2024 Vol. 44, No. 1

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WANG Shaoxing, NING Guodong, LIU Yingzhi, LI Yanjun. Dephosphorization of a High−phosphorus Iron Ore by Magnetic Roasting−leaching Process[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 82-88. doi: 10.13779/j.cnki.issn1001-0076.2024.01.011

Citation:

WANG Shaoxing, NING Guodong, LIU Yingzhi, LI Yanjun. Dephosphorization of a High−phosphorus Iron Ore by Magnetic Roasting−leaching Process[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 82-88. doi: 10.13779/j.cnki.issn1001-0076.2024.01.011

Dephosphorization of a High−phosphorus Iron Ore by Magnetic Roasting−leaching Process

1.
Shanghai Milestone Technology Co., Ltd., Shang Hai 201600, China
2.
School of Resources and Civil Engineering, Northeast University, Shenyang 110819, China
3.
National−local Joint Engineering Research Center of High−efficient Exploitation Technology for Refractory Iron Ore Resources, Shenyang 110819, China

More Information

Corresponding author: LIU Yingzhi, 1369269452@qq.com

Received Date: 08 August 2023

Publish Date: 15 February 2024

Abstract

Abstract

In response to the characteristics of high-phosphorus iron ore, which the complex symbiotic relationship between iron minerals and phosphate minerals in high-phosphorus iron ore and the difficulty in efficient utilization through conventional beneficiation methods. The roasting -leaching technology for iron extraction and phosphorus reduction was proposed with a view to achieving efficient utilization of high-phosphorus iron ore. This paper investigated a high-phosphorus certain iron ore with a TFe grade 60.81%, FeO content14.92%, and P content 0.71% extracted from Algeria. The experimental study on iron extraction and dephosphorization was carried out by oxidizing roasting-magnetization roasting-magnetic separation-leaching process. The magnetic roasting process conditions of oxidation temperature 1 050 °C, reduction temperature 520 °C, reduction time 25 min and H₂ concentration 50% were determined. The iron concentrate indexes of total Fe grade 65.50%, total Fe recovery 96.31% and P content 0.16% were obtained, which 77.46% of P removed. The experimental results offer guidance for iron extraction and dephosphorization of iron ore in Algeria.
- high−phosphorus iron ore /
- oxidizing roasting /
- magnetic roasting /
- leaching

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References

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