Jig working principle
A jig is a product that uses pulse motion to stratify materials in a sorting medium and then separate the separated layers. As early as the 18th century, the jig appeared. With the gradual development of science and technology, the jig has undergone several historical developments. Next we will understand the working principle of the jig in the future.
The working principle of the jig is basically stratified according to the specific gravity (density) of the mineral, and then the light and heavy minerals are discharged separately. However, it can be seen from the comments of various jigging hypotheses that there is no complete and unified jigging theory. Therefore, according to various hypotheses and China's production practice experience, the essence of the jigging process can be summarized as follows:
(1) The ore particles are mainly layered by specific gravity in the jig. The jig can not only sort the narrow grade of ore, but also effectively sort the wide and non-graded ore.
(2) In the jigging process, the higher the specific gravity of the medium, the greater the difference in specific gravity between the ore particles, the higher the sorting efficiency.
(3) Maintaining the bed with the necessary looseness is a prerequisite for stratification. If the bed is not loose enough, the ore particles are difficult to transfer to each other and thus the possibility of delamination is lost. Therefore, in the jigging process, the bed is in a loose state as much as possible to improve the processing capacity of the jig and improve the sorting effect.
(4) The influence of the size and shape of the ore particles on the stratification mainly occurs during the period of relative movement between the ore particles and the medium. Therefore, when sorting non-grading materials, the period of relatively large moving speed should be shortened as much as possible during the jigging period and the period of relative motion speed should be extended to keep the bed tight.
(5) The rising water flow should have a large positive acceleration and a small negative acceleration; the descending water flow should have a small positive acceleration and a large negative acceleration.
(6) The inhalation effect of the descending water flow is an aspect of the jigging layer, which can improve the jigging effect of the narrow-level and non-graded ore particles, but the strength and duration of the inhalation action should be selected according to the nature of the raw material.
(7) When hopping fine-grained ore, increasing the frequency of water flow movement in the jig can improve the sorting effect.
(8) Adding some high-specific gravity fine ore particles to the bed layer can improve the jigging effect of the non-classified ore, but the jig must be re-adjusted to enhance the inhalation.
Through the above analysis of the working principle of the jig, the working state of the jig is also progressive. Maintenance of the machine is extremely important and regular work. In order to make the life of the jig longer, it is necessary to understand the working principle of the jig.
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