Abstract: The selection of metallic mine expansion scheme is directly related to the mine future economic benefit of production.Therefore, the expansion scheme selection and optimization is of important and far-reaching significance to mining enterprises.Based on the basic principles of the expansion scheme selection for metallic mines, and in light of the production status of a sample mine, an evaluation indexing system for design schemes was constructed.An optimal expansion scheme for the sample mine under a production scale of 5 000 t/d was selected by ideal-point method and then optimized, and its financial indexes were analyzed, providing a reference to the decision-making people in mine expansion.

Key words: Metallic mine, Expansion, Ideal point method, Financial evaluation