Re-election-jigging beneficiation basic principle and four types of jig

The jigging beneficiation is the function of the vertical alternating medium flow. The ore particles are loose, and then the density is differential. The light mineral is in the upper layer, called the light product; the heavy is in the lower layer, called the heavy product, so as to achieve the sorting. purpose. The density of the medium increases within a certain range, and the greater the density difference between the ore particles, the higher the sorting efficiency.

In the vertical ascending water flow of the jig, the light, heavy and different sizes of the ore have different movement speeds. The heavy minerals fall behind the light minerals when rising, and under the light ore particles at the end of the rise. . When the ore particles move in the opposite direction, in the static or descending water flow, the heavier ore particles will settle at a higher speed, resulting in the formation of light and heavy ore particles: the densely colored ore particles cling to the lower layer. The sieve plate of the machine is so that the stratification is clarified after repeated iterations, and then the light and heavy two layers of the ore are separated by an appropriate device, thereby obtaining two products: concentrate and tailings.

There are many types of jigs. According to the way that the water flow in the jig is increased and decreased, the jigs can be divided into the following four types:

Eccentric link jig (including piston jig and diaphragm jig), pistonless jig, hydraulic agitated jig, moving sieve jig, etc.

At present, the concentrator mainly uses a diaphragm jig. According to the different position of the diaphragm, it can be divided into: 1 upper diaphragm type jig (also known as dam type), its diaphragm chamber is located in the upper part of the body; 2 lower diaphragm cone jig, its diaphragm is located in the jump Under the chamber; 3 side-moving diaphragm jig, its diaphragm is located on one side of the jigging room, including trapezoidal jig, rectangular jig and so on.

In the non-piston jig, the water movement is not directly driven by the piston or the diaphragm, but the compressed air sent by the blower causes the water to move up and down. This jig general election in the coal industry applications.

The moving sieve jig uses a sieve to move up and down in the water, causing rising and falling water flow. The simple hand-cranking machines of some small factories in China belong to this type.

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