Although the method of treating the swelling is different due to the grinding process, the nature of the swelling and the reasons, but for whatever reason, the ore should be stopped first, and then the necessary treatment should be carried out for different situations.
For open-circuit grinding, as long as the ore is properly added to the ore water ( post-water ) , the mineral material is slowly discharged from the grinding machine, and the swelling can be eliminated to restore normal. For closed-circuit grinding, since the ore is composed of two parts, that is, the original ore and classifier return sand, only the original ore is stopped. Since the returning sand is continuously fed into the grinding machine, it is still not conducive to eliminating the swelling phenomenon, so it should be as soon as possible. Reduce the amount of sand returned by: The water before closing ( grinding machine to add water ) increases the amount of water, reduces the amount of water supplied to the classifier tank, and increases the graded mass fraction. A large amount of mineral material is discharged from the overflow to reduce the amount of sand returned. As the mineral water is increased, the mass fraction of the mineral material in the mill can be reduced, the fluidity can be increased, and the discharge of the material can be accelerated. People have summarized this method as a jingle: "The front water is closed, the water is added, and the concentration ( grading concentration ) is reduced back to the sand . " Sometimes in order to reduce the amount of sand return as soon as possible, the grader can be temporarily lifted up to make the sand return material “ temporarily stored †in the grading tank, so that the swelling will be eliminated faster, and then slowly put down when the mill returns to normal ( Note: Do not Too fast to avoid a large amount of " temporary " ore in the tank to overload the classifier ) . When the stomach is severely inflated, that is, when it is " swelled to death " , high-pressure water can be injected into the grinding machine from the feed port or the discharge port to loosen and dilute the material in the machine, and then discharge the part and then increase the water to accelerate the discharge. For some processes that consist of sieves that constitute closed-circuit grinding, there is generally an accident pool. When the swelling is severe, the coarse ore can be temporarily stored in the accident pool, and then returned to normal after pumping back. When more severe bloating (e.g., occurring "front spit" "pull"), After processing returns to normal, stop grinding machine, carry out the necessary checks: spoon head is detached or loosened; Ore whether loose; if the screws are Cut and damage other parts of the mill.Multifunction Hand Blender,Stick Hand Blender,Immersion Hand Blender,Hand Blender Set
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