Copper-lead sulfide ore is a relatively difficult ore in the separation of copper-lead-zinc minerals. At present, the main beneficiation method for copper-lead sulfide ore is flotation. The common flotation separation processes are priority flotation, mixed flotation tailings-mixed concentrate priority flotation, equal flotation and potential control flotation separation Craft.

1. The preferential flotation separation process of copper-lead ore
The priority flotation separation process of copper and lead is based on the floatability of copper, lead and other sulfide minerals in the ore, and adopts a targeted reagent system to flotate them from the ore slurry in turn to obtain separate concentrates and wastes. Tailings.

The priority flotation copper concentrate is of high quality and easy to control on site. However, the structure of the process is more complicated, there are many types of flotation reagents, and the consumption of reagents is large.
2. Copper-lead mixed flotation-mixed concentrate separation process
The copper and lead mixed flotation-mixed concentrate separation process is to first mix and float the copper and lead mixed concentrate, and then perform full or partial separation of the mixed concentrate after de-drugging. Generally, lead-inhibited floating copper is used to float again. Lead method. This process is mainly suitable for treating copper-lead sulfide ore in which useful minerals are unevenly distributed, or densely coexisted with each other, or one useful mineral is fine-grained in another useful mineral.

3. Flotation separation process such as copper and lead
The flotation separation process of copper, lead, etc. is to select useful minerals with similar flotability into the mixed concentrate, and then perform separation and flotation according to the difference in the flotability of the ore. This kind of process is suitable for processing complex polymetallic copper-lead sulfide ore that contains both hard-to-float and easy-to-float parts in metallic minerals.

4. Copper-lead potential control flotation separation process
The essence of the copper-lead potential control flotation separation process is to control, adjust and match the pH-potential system in the slurry to enhance the hydrophobicity of the copper sulfide mineral surface and the hydrophilicity of the lead sulfide mineral surface, so that the copper-lead flotation separation. The flotation process is mainly suitable for processing low-grade copper-lead sulfide ore.