The working principle of jigger is an energy-saving re-election equipment developed and improved on the basis of traditional jigger according to the theoretical stratification law of jigging bed, and its jigging pulsation curve is sawtooth waveform so that the rising water flow is faster than the descending water flow; the rising time is short and the descending time is long, which overcomes the defects of the rising and descending water flow and the action time of the same produced by sinusoidal pulsation curve jigger and strengthens the loosening degree of the bed layer and eases the inhalation effect, so that the heavy mineral particles in the minerals are fully settled, greatly improving the enrichment ratio and recovery rate of the equipment.

Jigger is a fixed screen type, suitable for separating metal ores, such as tungsten and gold-bearing alluvial ores, selected tin ore, etc. It can be used for both fine-grained materials and coarse materials, with a feed size of 6-8mm, but in the individual case of separating alluvial ores, the size of the jigger is 12mm.

Coal beneficiation history of the use of jigging machine has been more than 100 years, 1830 appeared is manual jigger, 10 years later (1840) appeared fixed screen jigger, 1848, the invention of continuous operation of the mechanical drive jigger, which is the prototype of the piston jigger. With the technological progress and the accumulation of production experience, the structure and performance of the piston jigger had a new development.