The beneficiation method of lead-zinc ore mainly includes the following stages

The beneficiation method of lead-zinc ore mainly includes the following stages:

1. Crushing and screening stage: In this stage, a three-stage and one closed-circuit crushing process is usually adopted. The equipment used includes jaw crusher, spring cone crusher and DZS linear vibrating screen.

2. Grinding stage: The design of this stage will be determined according to the nature, origin, structure and structure of different processing plants and lead-zinc ores. Small concentrators may choose a simple grinding process, while large concentrators may need to compare multiple options to select a suitable grinding process. The energy saving of the grinding machine is also the focus of attention at this stage. The energy-saving ball mill produced by Xinhai can be used to save energy by 20%-30%. In addition, it also includes straight energy-saving overflow ball mills, wet rod mills and high-efficiency autogenous grinders.

3. Ore dressing stage: In this stage, flotation process is mostly used. This is because the mineral composition elements of lead-zinc ore are more and the floatability is significantly different. Flotation can effectively obtain lead and zinc minerals. According to the different degrees of oxidation, lead-zinc ores can be divided into lead-zinc sulfide ores, lead-zinc oxide ores and mixed lead-zinc ores, and their selected flotation processes are different. For example, lead-zinc sulfide ores can use preferential flotation, mixed flotation, etc., while lead-zinc ores can use sodium oxide sulfide flotation, sulfur sulfide flotation, etc.
To sum up, the beneficiation method of lead-zinc ore mainly includes three stages: crushing and screening, grinding and flotation. The specific processes and methods used depend on the specific characteristics of the ore.