Research on Optimization of Cut−off Grade in Polymetallic Mines Using Imperialist Competitive Algorithm

XU Qianqian; GUO Jinping; WANG Xiaolin; LIU Yaxiong; XUE Tao

doi:10.13779/j.cnki.issn1001-0076.2024.08.020

2025 Vol. 45, No. 1

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XU Qianqian, GUO Jinping, WANG Xiaolin, LIU Yaxiong, XUE Tao. Research on Optimization of Cut−off Grade in Polymetallic Mines Using Imperialist Competitive Algorithm[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 8-14. doi: 10.13779/j.cnki.issn1001-0076.2024.08.020

Citation:

XU Qianqian, GUO Jinping, WANG Xiaolin, LIU Yaxiong, XUE Tao. Research on Optimization of Cut−off Grade in Polymetallic Mines Using Imperialist Competitive Algorithm[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 8-14. doi: 10.13779/j.cnki.issn1001-0076.2024.08.020

Research on Optimization of Cut−off Grade in Polymetallic Mines Using Imperialist Competitive Algorithm

1.
School of Resources Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China
2.
Henan Fender Mining Co., LTD, Luoyang 471000, Henan, China

More Information

Corresponding authors: GUO Jinping, 414075711@qq.com ; WANG Xiaolin, 18706841567@163.com

Received Date: 07 June 2024

Publish Date: 15 February 2025

Abstract

Abstract

Cut−off grade is an important decision parameter in mining operations. In multi metal mining projects, determining a reasonable cut−off grade is the foundation for obtaining greater economic benefits for subsequent mining. Based on the maximum net present value method, a dynamic optimization model for the comprehensive cut−off grade of a polymetallic mine based on ICA algorithm was constructed for the two−stage production process of mining and selection. The optimal cut−off grade of a certain silver lead mine was dynamically determined. The example application shows that the model is suitable for determining the cut−off grade of polymetallic mines. During the lifespan of the mine, the optimal cut−off grade for a Pb−Au−Ag polymetallic material determined by the ICA algorithm was 2.619%, which later decreased to 1.331%. The total net present value of the mine was 1274.5753 million yuan; Compared with the Lane method, this model has global search ability and is more advantageous in dynamic optimization of cut−off grade indicators in the later stage of mining, providing new ideas for determining reasonable cut−off grade indicators in mines.
- polymetallic ore /
- imperialist competitive algorithm /
- comprehensive grade /
- maximum net present value method /
- cut−off grade

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References

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