Screening troubleshooting

Mechanical screening can never be 100% accurate, but even so, if you aren’t satisfied with your product there could be a straightforward explanation and a painless remedy. It is important to understand the root cause of any problems so the right solutions can be found. In the article below we’ve identified some of the common causes of inefficient screening, as well as outlining some remedial actions.

Too many misplaced particles in product

One of the most common issues for screen operators is that output doesn’t match their expectations. Regardless of whether there is too much undersize in the overflow, too much oversize in the underflow, or even a combination of both, it’s advisable to first check these three areas:

Blocked screens – pegging and blinding

If the screening media gets partially blocked by feed material, results will be sub-optimal at best. There are two ways that this can happen: pegging and blinding.

Screening performance summary

This chapter of the Knowledge Hub has hopefully reinforced that there are a lot of variables that can affect screening performance. To summarize, here’s a table that shows the significant factors that you should take into account when assessing the effectiveness of your screening operation.

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