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Wearing out cyclone underflow pump liner (8 replies and 2 comments)
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Hello guys. I really need your expertise advice and ideas.
The plant I work for is a gold processing plant. They have a real problem with the pumps from cyclone underflow to ball mill. The mill section comprises a ball mill, screen and cyclone. I have done a water balance for a couple of times.however, since the last seven days, the screen was damaged and the density( mass percent) of the underflow of the cyclone increased by about 15%, which is so weird. At the mean time the rubber liner of the underflow cyclone pumps got torn out. I thought, because the screen is not working properly, almost the size separation is done mainly by cyclone. And Since Grinding is achieved through ball mill only, we expect the size of the discharge is a coarser than grinding with both ball and sag mill. What I think is, because the screen is damaged, the size of the cyclone underflow may be coarse enough to wear out the rubber of the pump. So what do you say about my idea? If not what do you think the problem is?
Here is the attached flow chart