The basic structure of the overflow ball mill is shown below.
The structure of the overflow type ball mill and the lattice type ball mill are basically the same, and it is also composed of six parts. The difference is that the discharge part has no discharge grid plate device, which is simpler than the lattice type ball mill.
The overflow ball mill appears earlier than the lattice type, and the inner diameter of the hollow shaft of the discharge end is larger than that of the ore end, thus causing the slurry to overflow from the discharge end. Due to the outflow of the ore at the end of the ore discharge, the ore surface of the ore discharge end is lower, and the liquid level difference is formed inside the mill, which promotes the flow of the slurry from the feed end to the discharge end, which can improve the productivity of the mill and improve the grinding product. quality. In order to prevent the grinding medium and the coarse-grained ore block from being discharged together with the slurry, a self-returning spiral is applied in the hollow shaft of the discharge end.
Compared with the lattice ball mill, the overflow ball mill has a slow discharge rate, is suitable for fine grinding, is sensitive to changes in external factors, and needs to be adjusted in time. The overflow ball mill has a simple structure and is easy to manage and overhaul.
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