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Click to add WeChatThe flotation machine is the main equipment in the flotation operation. In the flotation operation, the grinding fineness, slurry concentration, chemicals, etc. are strictly controlled. Otherwise, the flotation machine will have abnormal phenomena. Therefore, it is required Operators often check the flotation status during the operation of the flotation machine.
Below we will summarize some common abnormal phenomena during the flotation process of the flotation machine and see what methods can be used to solve these phenomena.
This situation may be caused by the grinding fineness of the materials in the flotation machine not reaching the standard or the dosage problem of the flotation reagent. If the grinding fineness cannot reach the target, the grinding fineness should be appropriately increased, and the number of grinding sections can be increased, or the grinding method can be implemented in stages.
If there is a problem with the dosage of flotation reagents, the flotation reagents should be tested and the dosage and indicators of flotation reagents should be re-determined. For example, in a copper oxide cobalt mine in Congo, the main copper-containing mineral is malachite, and the cobalt mineral is hydrocobaltite. In order to improve the flotation effect, after experiments, a 1:1 mixture of sodium hydrosulfide and ammonium sulfide was used to improve the flotation effect. flotation effect.
When large foam appears in the tank of the flotation machine, When reflection occurs on the surface, the possible reason is that too much flotation reagent is added. At this time, the operator should appropriately adjust the dosage of flotation reagent and observe whether the flotation foam condition is improved.
If the liquid level of a single flotation tank of the flotation machine is too high, the reason is mostly that the suction pipe is blocked. At this time, the operator needs to stop and clean the suction pipe.
There are four possible reasons for this situation. One is that the overflow concentration is too thin, and the other is the position of the liquid level adjustment plate. If it is too high, the third reason is that the overflow concentration of the slurry is too concentrated, which will also lead to coarse running and severe sand settling. The fourth reason is that the dosage of inhibitors and adjusters is too large, which makes it impossible to produce an appropriate amount of foam. When this happens, the operator should first observe the situation, control the concentration and fineness of the slurry, and also pay attention to controlling the dosage of adjusters and inhibitors.
The rutting phenomenon in the liquid level of the flotation machine tank indicates that the slurry foam layer is unstable. It is possible that the cover plate is installed unevenly, resulting in uneven gaps. One side is larger and the other is smaller. The side with the larger gap will produce knurling. It is also possible that the stator has fallen off, causing the incomplete slurry to flow unbalanced at the bottom. The final possibility is a loose pipe joint. These three situations are all caused by the failure of the flotation machine, and the operator needs to notify the machine for repair in time.
During the operation of the flotation machine, the slurry liquid level drops. Possible reasons include: too coarse grinding fineness, increased processing capacity, Or the dosage of medicine is insufficient. Operators can solve the problem by adjusting the grinding classification, reducing the amount of ore, or appropriately adjusting the dosage of chemicals.
Generally speaking, there are several reasons for this situation: the ore feed volume of the flotation machine is too large, the aeration volume is too high There are blockages in the middle box and the liquid level adjustment plate, the suction tank has insufficient slurry suction capacity, and the flushing water pressure is too small. In these cases, the blockage of the liquid level adjusting plate is easy to cause sand settling. The liquid level adjusting plate should be lowered first to clear the blockage. If necessary, the bottom flow valve can be opened to allow the slurry to circulate. Check the aeration amount and whether the acid pipe is blocked. If there is a blockage, the ore feed volume and overflow concentration should be ascertained at the same time, the reasons should be found out in time, and the ore feed volume or other factors should be adjusted in a timely manner according to the reasons.
When this phenomenon occurs, the operator should stop the ore first and then open the flotation machine tank At the bottom of the underflow valve, wait until the slurry flow returns to normal before supplying the ore and blocking the underflow valve. At the same time, attention should be paid to controlling the concentration of the slurry.
The above eight major problems are common abnormal phenomena and solutions during the flotation process of flotation machines. I hope they can be helpful to all mine owners. In fact, for small and medium-sized processing plants, when constructing flotation processing plants, Before starting the plant, it is of great help to choose an integrated service that can be responsible for the operation from the mineral processing test to the operation and production after the construction of the mineral processing plant. In this way, some of the above problems can be effectively solved, and the operators can also receive effective guidance. Reduce problems in subsequent production processes.
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