Abstract: In order to improve the ore blending efficiency and resource utilization rate of an open-pit copper-cobalt mine，aiming at the problems of large fluctuation of ore grade，low efficiency of transportation scheduling and unscientific yard management in the existing ore blending process，the investigation and op‐ timization of production ore blending process are carried out.Through data collection and analysis，the key problems such as lack of connection between mining plan and production scheduling，uneven ore mixing and insufficient yard capacity are identified. In view of these problems，optimization measures such as ore classification management，intelligent transportation scheduling，layered stacking and automatic stacking and reclaiming technology are proposed.Through the implementation of ore grade database and intelligent transportation management system，the ore ratio and transportation efficiency are optimized. In terms of yard management，layered stacking and three-dimensional laser scanning technology are used to significantly im‐ prove the mixing uniformity of ore.In terms of mechanical equipment，the stability of equipment operation is improved by increasing maintenance frequency and online fault diagnosis.After the implementation of the op‐ timization scheme，the fluctuation of ore grade is controlled within ±3%，the transportation efficiency is in‐ creased by 25%，the ore accumulation standard deviation in the yard is reduced to 0.06%，and the produc‐ tion efficiency is increased by 12%. The optimized ore blending process effectively improves the recovery rate of mineral processing and the stability of product quality，which provides valuable experience for pro‐ duction and ore blending process optimization in similar mining areas，and has positive demonstration signif‐ icance.

Key words: open-pit copper-cobalt mine, production of ore blending, ore classification, intelligent scheduling, yard management