mineral processing technology and mineral processing equipment

In a mineral processing plant individual pieces of comminution equipment are almost never used alone, but rather appropriate“stages” of size reduction are used in a plant to transform the material from the run-of-mine size to the final product size and then go to beneficiation stage such as flotation machine , gravity machine, magnetic equipment etc . The appropriate selection of equipment on a stage-by-stage basis is determined by feed size, ore type, tonnage, and final product size. Table 1 lists the size ranges within which various comminution methods operate most efficiently. The fact that the inherent efficiency of some devices is higher than others causes circuit designers to select equipment that produces a favorable overall efficiency. Table 1. Normal size range and approximate energy efficiencies for various devices In addition to taking into account inherent device efficiency in circuit design, the use of interstage size separation equipment will be shown in this ...

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 o...

The grinding equipment widely used in the mineral processing is the ball mill and the rod mill , At present, only the grid and the overflow type are used in the ball mill. The co ne ball mill is not manufactured because of its low productivity . Structure of grid ball mill The structure of the ball mill of all kinds of specifications is basically the same .Now we describe the structure through  the model MQG 2700x3600mm grid ball mill which manufacturered by sinonine . Fig 1 is the general layout of     MQG 2700x3600mm grid ball mill manufacturered by sinonine The barrel （ 1 ） of a ball mill is welded by a steel plate with a thickness of about 18-36 millimeters , Its ends are welded with steel flanges (2). T he end cover (7) and the hollow shaft neck end cover (12) are connected to the flange plate , the two must be precision processing and coordination, because the shaft neck of the weight of the mill is welded on the end cover. A manhole for repairing an...