Flat-Top Woven Screen Aperture Selection: Tips for Optimal Particle Separation

If you’ve ever installed a brand new flat-top woven screen on your aggregate deck, only to find that 20% of your near-size target aggregate is slipping through the apertures and contaminating your fine stockpile, or large oversize chunks are bouncing across the deck and getting carried off into your finished product, you know how much a bad aperture sizing call can ruin your whole plant’s product gradation and profit margins. Many quarry operations supervisors I’ve worked alongside over the years shared that they used to just copy the aperture size they used on their old standard crimped screens when upgrading to flat-top panels, and kept running into unexpected sizing issues for months, until they learned that the flat-top’s unique smooth surface changes how particles interact with the apertures. This practical, field-tested guide skips generic sizing charts and breaks down actionable, site-specific tips for flat-top woven screen aperture selection, based on real-world data collected from dozens of aggregate and mine processing decks.