Modern Quarrying Q2 2019

SCREENING – PART 1

When talking about screening efficiency, it is important to understand what it is in the first place and how it’s measured.

expensive with long lead-times. They generally tend to have slightly less open area than wire meshes,” con- cludes Abelho. l

3-5 times longer, effectively providing you with signifi- cantly more open area, thus improving efficiency. In order to cut costs, operators often select a thicker diameter wire for their mesh, as this means less change outs from wear. On marginally sized screens, this can have a significant effect on screening efficiency, as thicker diameter wire means less open area,” says Abelho. “Rubber/Synthetic media offers better durability, and can be resistant to blinding. However, they can be very

Look out for Part 2 of the Screening feature in the Q3 edi- tion of Modern Quarrying. Part 2 of the feature will look at the importance of deploying the right screen for the right application, as well as how the end product influences the type of screen needed.

WIRTGEN

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MODERN QUARRYING QUARTER 2 - 2019