Abstract: Difficulties are met with in the operation of the plant’s flotation circuit because of the excessively high feed load. To tackle this problem,a technically feasible flotation scheme has been worked out through improvement and perfection of the flotation regime. Practice shows that the scheme adopted provides a strong guarantee for the smooth operation of the flotation system. At the moment,the flotation system is operating with a remarkable performance. Both the east and west flotation circuits are now in smooth operation with an aggregate pulp throughput of around 1 700 m³/ h,an ash of concentrate of 10. 00%~11. 00%,a tailings ash of over 55. 00% and a consumption of flotation agent for each ton of concentrate produced rated at 0. 38 kg and even 0. 33 kg. This brings about a favorable economic result for the plant.