The most important feature of a prebreaker grinder is its power : If you want to grind big chunks of EPS, which fall off your contour cutter, no matter if it is 10 or 35kg/m3, you don´t want to get stuck with this small "grandmother´s coffee grinder type" or a dust-producing-hammer-mill, no :
You need the REAL grinder, comminuting up to 20m3/h of EPS scrap pieces to granules, featuring a quick change screen system.
You need the VBM 1350, based on the design of the good old WIESER grinders.
Although a screen with 12mm holes will not make very much dust, the smaller screen sizes will, so a de-duster is highly recommended.
New slow-rotating prebreaker/grinders are more expensive, but make almost NO dust.
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Dust extraction system for EPS regrind, preferably situated after the fine-grinder, before the regrind silo. Some dust will occur when using screens with small holes, therefore it is advisable to configure the recycling plant including a dedusting system.
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