关键词: 低品位, 资源, 五环归一, 工程管理模式, 创新

Abstract: As basic metal minerals， there are less high-grade resources and more low-grade resources in China， so their overall endowment and development conditions are relatively poor. Based on the theory of economic geology， the management mode of "Five-process integration" project is to integrate the technology and process of five links of exploration， mining， mineral processing， metallurgy and environmental protection， which can maximize economic and social benefits； Through the innovation of technology and management system， the investment and cost have been greatly reduced. It plays an important rule in developing Zijinshan Gold and Copper Mine and many other mines， which makes recovery of low-grade resources more efficient. This mode owns a guiding significance for the economic and effective development of many low-grade refractory mineral resources in China.

Key words: Low grade, Resources, Five-process integration, Engineering management mode, Innovation