Jigging is one of the more important re-election methods and is widely used in the selection of coarse materials.
The essence of the jigging process is to stratify the mixture of mineral particles of different specific gravity in a vertically moving variable-speed medium (water or air). The ore particles with a small specific gravity are located in the upper layer, and the larger ore particles are located in the lower layer, and then they are separated into products of different specific gravity by the action of mechanical action and water flow, and are respectively discharged.
The medium for jigging beneficiation can be water and air. The use of water as a jigging medium is called hydraulic jigging; the use of air as a jigging medium is called wind jigging. Hydraulic jigging is commonly used, and wind jigging is only used in dry areas where water is scarce.
2. What are the main types of jigs? What are the ore and particle size levels that are suitable for processing?
There are many types of jigs, mainly diaphragm jigs and trapezoidal jigs.
Separator jig main dip treatment of the crude ore beneficiation high efficiency, used for sorting of rare metals tungsten ore, tin ore metal ore particle size up to 16 mm and a minimum particle size of up to 0.5 mm. The ore must be screened and classified.
Trapezoid jigger larger handling capacity, processing a wider level, can handle 50-0.25 mm in size, it has tungsten, tin, iron ore processing plant in the country to promote the use.
3. What are the factors that affect the selection process of the jig?
Factors affecting the jigging selection are: 1) stroke and stroke. This is an important factor in the jigging process. Strokes and strokes determine the speed, acceleration and looseness of the water in the jig. Stroke and stroke are related to the particle size, specific gravity and thickness of the bed. The coarse-grained material should be selected with a large stroke and a small stroke. The fine-grained material should be washed with a small stroke.
(2) Water consumption. There are two aspects to the water consumption of the jig, that is, the water supplied from the sieve to the mine end and the water under the sieve. The larger the amount of water on the sieve, the faster the light product discharge rate and the larger the treatment volume, but the stratification is incomplete, and the light products are easily mixed into the larger specific gravity. The main function of the additional water under the sieve is to enhance the upper flushing flow and make the bed loose for sorting.
(3) Bed thickness. The thicker the bed, the longer the time required for the loose bed and the longer the delamination time.
When the difference in specific gravity between the large specific gravity particles and the small specific gravity particles is large, the bed layer may be thinner; when the specific gravity is small, the bed layer may be thicker. When the bed is thick, the quality of the heavy product is improved and the quality of the light product is lowered. When the bed is thin, the quality of the heavy product is lowered and the quality of the light product is improved.
At the same time, Yisu, which affects the jigging selection process, also has the area of ​​the jig screen surface, the size and shape of the sieve hole, the size and uniformity of the feed amount.
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