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Shaking table is a kind of high-efficiency gravity separator widely used in the minerals with fine particle size and different density. In the process of using the shaker, the mineral separation is realized under the joint action of bed surface and transverse water flow.
In order to reduce faults and improve the separation efficiency, the shaking table operators need to be good at the daily operation skills and maintenance of the shaking table.
Here we're going to introduce some accessible 7 daily operation skills and 5 maintenance methods of shaking table to you.
Let's drive right in!
When operating the shaking table, it is necessary to carefully observe the partition of the shaking table bed surface and control the appropriate vertical and horizontal slope of the bed surface. In addition, it is also necessary to consider other factors, such as the feeding size, the feeding amount, feeding concentration, flushing water, stroke,frequency.
Next, we will introduce 7 operation skills of the shaking table from the above aspects:
The bed surface is divided into concentrate area, middlings area, tailing area and slime area. Under the normal conditions,the width of the slime zone is 0.9 ~ 1.4m. The ore flow in the tailing area should be stable and without rapids, the thickness of the ore layer should be appropriate and covered by water. Tailing area can be controlled by adjusting the feeding concentration and sand hole of feeding groove. The middlings area is the area that separates the middlings, which is mainly regulated by adjusting the flushing water and transverse slope. The concentrate are are quires the obvious zoning of various specific gravity minerals, that means to form a stable and clear boundary between the concentrate area and primary separation area. This area is controlled by adjusting the flushing water and transverse slope.
The inclination angle of the bed surface should be controlled. In the actual operation of the shaking table, it is necessary to control the vertical and horizontal slope of the bed surface. Generally,if the mineral particles are coarse, the vertical slope of the shaking table bed surface should be appropriately raised. Conversely, if the mineral particles are fine, the shaking table bed surface needs to be lower.
The feeding size should be appropriate,which should not exceed 2~3mm, but larger than 0.037mm. In order to ensure that the uniform grade size of shaking table and keep the feeding size is within the appropriate range, it is necessary to observe the concentrate area, middlings area and inspect the tailings by washing.
The amount of ore feeding is related to the grain size of ore feeding. If the ore is coarse, the amount of ore feeding should be larger. However, if the amount of ore feeding is too large, the zoning problem will be caused. In this case, it is necessary to move the concentrate interceptor plate, increase the flushing water and the transverse slope of the shaking table bed surface. Please note that the feeding process needs to be continuous and uniform once the accurate feeding amount is confirmed.
It is necessary to ensure the appropriate ore feeding concentration in the separation process. Generally, the feeding concentration of coarse and fine mineral is 20% ~ 30% and 15%~25% respectively.When the surface of the shaking table has the problem of pulling furrow, the feeding concentration can be appropriately increased. On the contrary, if the sand pile occurs, the feeding concentration needs to be reduced. The feeding concentration can be controlled by adjusting the amount of feeding water.
Flushing water includes feeding water and washing water. If the concentrate area becomes narrow and the concentrate enters to the middlings When operating the shaking table, the amount of flushing water needs to be reduced. On the contrary, if the bed surface of the shaking table shows anhydrous film, it is necessary to increase the amount of flushing water appropriately. When controlling the flushing water, it is necessary to carefully observe the slurry velocity and the width of the concentrate area.
The stroke and frequency are mainly affected by the feed grain size, load of the shaking table and the ore density.The large stroke and small frequency should be used when selecting the material with coarse grain and thick bed layer. On the contrary, the small stroke and large frequency should be used. In case of failure, it is necessary to check whether the stroke and frequency are appropriate. If there is any abnormality,it is necessary to adjust the stroke and frequency of shaking table in time.
including the bed surface, head and frame of the shaking table. First, check the bed surface whether contact the non-shaking parts, the tilt degree of the bed surface. if the bed surface of shaking table is damaged, resin filling wear-resistant agent can be prepared to repair it.
When it is found that the wear condition of the components is very serious, it should be replaced in time.
The spring is damaged the position of the pull rod, the slide surface of the shaking table is good. If there is abnormal sound, it should be found and eliminated in time.
Do not expose it to the sun or rain, which may cause moisture of the shaking table.
When stopping, wash the bed surface of the shaking table in order to avoid the oxidation and scaling of impurities.
In order to improve the work efficiency of the shaking table, reduce the various problems in the separation process, Xinhai suggests that the shaking table operator should run the shaking table correctly by referring the above operation skills and maintenance points of shaking table.
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