The normality of bed movement is one of the important factors determining the sorting index. The loose performance of the normal bed is: the bed pulsation is loose and stable, and when inserted by hand, the resistance is not large and it is easy to insert. Check the bed layer, the ore particles are layered according to the specific gravity, the tailings do not run through the organism, and the concentrate grade and recovery rate are higher.
The bed movement is not normal, there are several phenomena, the performance characteristics and their causes are shown in the table below.
Characteristics and causes of abnormal movement of bed in the table
phenomenon | Performance characteristics | the reason |
The bed is too tight | The bed should not be loose, it is difficult to insert by hand, when the water flow drops, the bed is even exposed to the water surface, the ore moves slowly, the tailings run through the body, and even the monomer minerals appear. | 1) The amount of ore is large, the particle size is coarse, and the stroke and the amount of water under the sieve are small; 2) The screen surface is generally blocked or the artificial bed layer is too thick, the specific gravity is too large, and the particle size is too thick; 3) Rushing for too long. |
The bed is too loose | The horizontal movement is not stable, and even the water surface oscillates left and right. The hand insertion does not feel resistance, the bed movement is fast, the tailings run monomer or continuous body, the grade of the concentrate on the sieve is high, and the grade of the concentrate under the sieve is low. | 1) The stroke is too large; 2) The water under the sieve is too large; 3) The bed and bottom sand are too thin or too fine. |
Bed disorder | The bed is turned over, the beds are loose and uneven, and the water flow is unstable. Inserting the bed by hand can make the parts feel loose and there are continuum and monomer in the tailings. | 1) the screen surface is worn or clogged, or the screen surface is not flat or partially loose; 2) The concentration of the ore is too small; 3) The distribution of the ore is uneven. |
It should be noted that the phenomena and causes of bed changes are complex. Therefore, we should fully consider various factors and pay attention to analyzing the relationship between various factors. When the jig is operated, in addition to observing and adjusting the bed, it is necessary to control the emissions to ensure the quality and quantity of the products.
A8 Iron Ore Pellet Detection Device
A8 Iron Ore Pellet Detection Device,Hydraulic System Control Pellet Press,Automatic Pellet Press,Hydraulic System Pellet Press
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