Low grade lead-zinc ore is usually beneficiated using flotation method. Because the grade of low-grade lead-zinc ore is generally below 5%, the ore content is relatively low. If traditional physical beneficiation methods such as gravity and magnetic separation are used, a large amount of tailings will be generated, and the efficiency is not high and the cost is high. Therefore, flotation method has become the main method for low-grade lead-zinc ore beneficiation.
The flotation of low-grade lead-zinc ore is mainly to make use of the difference in physical and chemical properties between lead-zinc ore and water and reagents to form foam in the flotation machine, so as to realize the separation of lead-zinc ore and impurities. During the flotation process, appropriate reagents need to be selected for adjustment based on the properties of the ore. Commonly used flotation agents include collectors, foam agents, regulators, etc.
In the flotation process of low-grade lead-zinc ore, the following points need to be noted:
Select appropriate flotation reagents and adjust according to the properties of the ore to improve flotation efficiency and grade.
Control the working conditions of the flotation machine, such as gas flow rate and stirring speed, to ensure the flotation effect.
Conduct reasonable flotation circuit design, including pre, intermediate, coarse, and beneficiation processes, to improve the recovery rate and grade of lead zinc ore.
In short, the flotation of low-grade lead-zinc ore is a technically challenging task that requires scientific and reasonable process flow and operational techniques to ensure beneficiation efficiency and quality.
