Structure of overflow ball mill and rod mill

The structure of the overflow ball mill is shown in Figure 1. It can be seen from the drawing that its structure is simpler than grid ball mill, and the other is similar to the grid type ball mill in addition to the discharge end. The overflow ball mill spilt from the lower edge of the hollow shaft of the pulp, and it does not need to install a heavy grid plate. In addition, in order to prevent the steel ball and coarse grained ore in the ball mill from being discharged with the pulp, the inner surface of the hollow axle neck bushing is inlaid with a reverse spiral blade.

Fig 1. MQY2700x3600 overflow ball mill

At present, the rod mill used in the beneficiation is only two kinds of overflow and opening, the former is more common. The structure of the rod mill is roughly the same as that of the overflow ball mill. The grinding medium is round. The structure should be slightly different from the ball mill in order to ensure that the rod is flexed without hitting each other when there is a regular movement and falling in the rod mill. The cone shape end cap curvature of the rod mill is smaller, the inner side is lined with smooth lining, and the non smooth lining plate is used on the cylinder. The diameter of the hollow shaft is generally larger than that of the same size ball mill, and the rest part is basically the same as the same type ball mill. The structure of the overflow rod mill is as shown in Figure 2. The figure shows that the diameter of the hollow shaft neck of the ore drain is much larger than that of the overflow ball mill with the same specifications, which is to reduce the pulp level and speed up the slurry passing through the rod mill. The outlet of a large rod mill can reach 1200mm. 

Fig 2 overflow rod mill 

1. barrel, 2. end covers, 3. transmission gears, 4. main bearings, 5. cylinder liner, 6 end cover liner, 7. feeder, 8. feeder port, 9. discharge port, 10. flange, 11. inspection hole.

Structural characteristics of open type rod mill, there is a large aperture in the outer edge of the horn shaped opening in the overflow discharge end cover of the central, in order to avoid pulp splashing and rod slip from the rod mill, the port of discharge with a conical cover block, the lid is hinged on the single pole, the pulp horn the annular space between the lid and overflow . The end of the barrel is provided with a ring supported on two rollers. The structure of an open rod mill is shown in Figure 3.

Fig 3 open rod mill

Bll mills are main parts of any Beneficiation Plants and usually combine with flotation machines, Jaw crusher and other mining machines for lead-zinc mining and other kinds of mineral processing plant, such as goldmining equipment or other non-ferrous metal, black metal mining equipment. Sinonine provide customers with high efficiency, low cost of ores mine enrichment solution.

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sinonine can also provide sand washing plant epc.