Cu-Pb-Zn sulfide ore ball mill

The lead-zinc ore ball machine is a special grinding equipment developed based on the melting point, boiling point, structure, etc. of lead-zinc ore. It has special structural structure and advanced accessories. For example, the lead-zinc ore ball mill uses grinding aids, which can achieve the purpose of improving the efficiency of grinding lead and zinc mineral materials and reducing powder power consumption. The rake does not require a large amount of equipment investment, and is a practical method with low investment and quick results. Technology plays a role in improving production capacity at work.

working principle

When the lead-zinc ore ball mill performs grinding operations, the lead-zinc ore is first fed into the first chamber of the mill from the feeding device through the feeding hollow shaft in a spiral and even manner. The cylinder rotates to produce a centrifugal force that brings the steel ball to a certain height and then falls, causing a heavy impact and grinding effect on the lead-zinc ore. After the lead-zinc ore reaches coarse grinding in the first chamber, it enters the second chamber through a single-layer partition board. This chamber is equipped with a flat lining plate and contains steel balls to further grind the materials. The powdery material is discharged through the discharge grate plate to complete the grinding operation and achieve the products required by the user.

Advantages of two-stage grinding of lead-zinc ore

The advantage of two-stage grinding of lead-zinc ore ball mill is that the ore can be coarsely ground and finely ground in different grinding sections. The two grinding sections can adopt different grinding conditions: during coarse grinding, larger steel balls are installed and a higher speed is used, which is beneficial to improving the grinding efficiency; during fine grinding, smaller steel balls are installed And using a lower rotation speed can also improve the grinding efficiency.

The two-stage grinding advantage of lead-zinc ore ball mill is that it is suitable for stage separation. When dealing with unevenly distributed ores and ores containing minerals with large specific gravity, the sorting operation is used in the grinding cycle; the minerals that have been separated into monomers can be sorted out in a timely manner to prevent over-crushing, which is beneficial to improve It is a quality indicator for lead-zinc ore beneficiation; at the same time, it can reduce the aggregation of lead-zinc ore minerals in the graded return sand and improve the classification efficiency of the classifier.

Scope of application for two-stage grinding of lead-zinc ore

Therefore, when medium-sized and large-scale mineral processing plants require grinding fineness less than 0.15mm, it is more economical to use two-stage grinding. At this time, less electricity is consumed for grinding each ton of lead-zinc ore; the particle size composition of the lead-zinc ore grinding products is relatively uniform, and there is less over-crushing, which can improve the separation index. The disadvantage of two-stage grinding is that the load of the two stages is difficult to balance and the operation is complicated.