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1. Judging criteria and debugging methods for whether the cyclone working state is normal:
1. The thickness of the overflow meets the next step process conditions. This standard is the first standard, that is, the condition needs to be met first. The following is a brief description of how to adjust the status:
(1) The overflow concentration is small and the fineness is fine. At this time, it is necessary to reduce the pressure or adjust the concentration of the ore, or to replace the small sanding nozzle to meet the requirements.
(2) The overflow concentration is large and the fineness is coarse. At this point, it is possible to increase the pressure and adjust the concentration of the ore, or to replace the large sediment to meet the requirements. However, the above adjustments cannot be adjusted by only one method, because this may make the cyclone work not normal and stable.
2. The grit is discharged in an umbrella shape. The judgment is based on the angle of the grit between 10°-20°, and the concentration reaches about 75% for the best working condition. If the dispersing angle is too large, there are three reasons:
(1) The grit chamber is too large and the concentration of grit is too low. This can be adjusted by replacing the small sand sink.
(2) If the ore pressure is too small, the pumping pressure of the pump should be adjusted to meet the process conditions.
(3) The ore supply is too small and the concentration of the ore is too low. At this time, the amount of the ore and the number of the cyclone can be adjusted. In short, the concentration of grit directly affects the efficiency of the mill, affecting the grain size of the mill, which will affect the whole process.
3. Judging the mine pressure:
(1) The theoretical pressure regulation range of a cyclone group is 0.06-0.10Mpa. If the pressure is too high, it will cause relatively large wear on the cyclone.
(2) The theoretical pressure regulation range of the two-stage cyclone group is 0.08-0.16Mpa. If the pressure is too low, the concentration of the grit will be lowered, and the overflow concentration will become thicker, which will affect the process.
In short, in the pressure adjustment, it is necessary to ensure that the pressure of one cyclone group cannot be high, and the pressure of the two-stage cyclone group cannot be low.
2. Judgment and adjustment of the deterioration of the working condition of the cyclone:
1. There are more coarse particles in the overflow, and the grit is discharged in a column shape, which proves that the cyclone has a blockage, which should be eliminated in time, and adjusted according to the above adjustment.
2. The sand is discharged in a rope, which proves that the concentration of the ore is too high, and the concentration of the ore should be adjusted in time.
3. The cyclone has a long period of severe shaking, which proves that the cyclone is clogged, and it is necessary to reduce the pressure and the number of swirling units or replace the large sanding nozzle to eliminate.
3. Precautions in cyclone adjustment:
1. Any valve must not be half-open, only full or full.
2. Each method in the above adjustment should be used in combination, and the adjustment method should be used as much as possible.
3. When opening the cyclone, try to open diagonally.
4. The above operations should be adjusted according to the actual situation, and only have guiding significance.
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