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 ...

1. Classifier in grinding cycle In the grinding cycle, a classifier, a hydrocyclone or a screen are needed to connect with a mill to form a unit. The function of the grading equipment is similar to the effect of the sieves in the crushing process, such as pre grading and grading, and overflow control classification. 1.1. Spiral classifier The most commonly used classifier is a spiral classifier, which is divided into three kinds: high weir, low weir and sunk type. According to the number of spiral , it can be divided into single spiral and double spiral classifier. Spiral classifier with a sloping semi cylindrical trough 2, tank equipped with one or two spiral 3, it is the role of the sand pulp stirring and transported to the upper end of the chute. The spiral blade is connected with the hollow shaft, and the hollow shaft is supported in the bearings at both ends of the upper and lower sides. The transmission device is installed in the upper trough, the spiral bevel gear ...