There are many factors affecting the operation of the shaker, including the structure, operation and ore properties of the shaker.

(1) The density, particle size and size of ore particles in shaker feeding have a great influence on the separation index. When the density difference between heavy minerals and light minerals is greater than 1.5, they can be separated smoothly in a shaking table. Similar spherical ore particles and coarse particles are easy to be washed away by water, so ore particles with small density difference can be sorted under the favorable conditions of spherical and particle size difference. Generally, the materials shall be graded according to the equal drop ratio, that is, hydraulic classification.

(2) The transverse slope and water consumption mainly affect the transverse movement speed of ore particles and the looseness of bed. Increasing the slope can increase the speed of water flow. Generally, when dealing with fine-grained materials, the slope should be smaller, and when dealing with coarse-grained materials, the slope should be larger. The slope can be adjusted in the range of 0-10. For the gradient of different materials, the following values can be used as a reference: 3.5-4 for coarse particle size less than 2mm; 2.5-3.5 for materials less than 0.5mm; Less than 0. 2-2.5 for 1mm fine material; For slime (0.074 mm), use about 2. It should be noted that the selection of slope should be well matched with the amount of water.

The water consumption of the shaker includes two parts: one is the ore feeding water fed with the raw ore, and the other is the flushing water directly fed to the bed surface. The transverse water flow shall be adjusted properly. On the one hand, the bed shall be loose enough and ensure that the light minerals in the upper layer can be washed away by the water flow. Therefore, the water layer on the bed surface must cover the bed. However, on the other hand, it must be ensured that the ore particles with high density can settle on the bed surface, so the transverse water velocity and water volume should not be too large.

The amount of flushing water is related to the cross slope of the bed. Within a certain range, "large slope and small water" and "small slope and large water" can obtain similar separation effects. When the slope increases, the flushing water consumption can be reduced, but the method of reducing the flushing water consumption and increasing the slope will narrow the mineral zoning of different densities. When the quality of heavy minerals is required to be high, the method of increasing flushing water with a small slope is generally adopted. The flushing water and bed slope are often adjusted during operation. When they are adjusted properly, there will be a stratified area on the bed surface, with uniform water distribution, no waves, no piles of ore sand, obvious separation zone, thin bandwidth, no mining area on the bed surface, and appropriate width.

(3) Stroke and flushing play an important role in the loose, layered and selective transportation of ore particles on the bed surface. Stroke and flushing are two important factors related to each other. When selecting fine materials, small stroke and high flushing should be used, but the opposite is true when selecting coarse materials. For coarse-grained materials (2.0-0.074mm), the stroke can be adjusted between 15-27mm, and the stroke can be adjusted between 250-280 times / min. For slime, the stroke is 11-13mm and the stroke is 350-360 times / min. However, the appropriate stroke times are generally determined through tests and are generally not adjusted during operation.

(4) The feed concentration and feed water, the dry ore fed to the shaking table and the feed concentration determine the feed slurry volume. The feed concentration and feed volume have a great influence on the separation of the shaking table. The feed concentration is too high, the pulp viscosity is high, the fluidity is bad, and many heavy minerals can not be layered and zoned; If the concentration is too thin, it will not only reduce the productivity of the shaker, but also cause the loss of fine concentrate to the tailings. The appropriate pulp concentration should ensure that the pulp has sufficient fluidity and the stratification and zoning of ore particles on the bed surface. The ore feeding concentration of shaking table is generally 15-30%.

The feed volume is also an important factor in the shaking table operation. If the feed concentration is too low and the pulp volume increases when the feed volume is certain, the beneficiation recovery will decrease. If the ore feeding amount is certain and the ore feeding concentration is too large, it will also reduce the beneficiation recovery. The size of ore feeding depends on the particle size of the treated ore.

(5) Productivity the productivity of the shaker depends on the density, particle size composition, operating conditions and product quality requirements of the treated materials. During rough separation, only coarse concentrate is required. The coarser the separation particle size, the higher the productivity, and vice versa. When the productivity of the selected ore shaker is appropriate, it can be seen that the ore particles move orderly on the bed surface, the ore particle zoning is clear, the discharge position of each product is appropriate, the bed surface is not piled with sand, there is no clear mining area, and there is no torrent on the bed surface. At this time, the separation effect of the shaker is relatively good.