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All sand products from the Gold Jigs, the Screens, and the Log <br /> Washers converge and pass through a Cyclone and 2 Sand Screws (30 <br /> hp and 20 hp) (400 gpm water added) to separate any further <br /> unwanted clays and silts. <br /> Proposed New Equipment <br /> As an alternative feed route, the raw feed will be introduced into <br /> a Pioneer Dozer Trap with Feeder Mechanism (15 hp) , then conveyed <br /> (20 hp) to a 6 x 16 ' 3-Deck Wet Screen. skid mounted, semi-portable <br /> screen tower structure (30 hp) . This screen will remove 100% of the <br /> free sands, which will be pumped as a sand slurry through the new <br /> "Clean Sand" processing system. The coarse material will pass <br /> through to the existing Feed Hopper. As the new Screen can process <br /> material faster than the existing Feed Hopper can accept it, <br /> overflow chutes will allow excess material to be conveyed to a Feed <br /> Stockpile, for later processing through the system. <br /> The existing 2-Deck Symons Screen will be replaced by a Hewitt <br /> Robins Horizontal 5 x 16 ' 3-Deck Wet Screen, to be mounted into the <br /> existing screen tower structure (25 hp) . This screen will allow <br /> oversized material to be bypassed back to the startup of the <br /> process (15 hp) , while coarse aggregate material continues on to <br /> the existing Log Washers. <br /> Fines from the new 5 ' x 16 ' 3-Deck Screen are conveyed (10 hp) back <br /> through a Cedar Rapids 40 x 20 Model Dual Roll Crusher (75 hp) , and <br /> thence back to the startup of the process (15 hp) , where these <br /> sands pass through the "Clean Sand" processing system. . <br /> The second existing 2-Deck Screen will be replaced by a Hewitt <br /> Robins Inclined 5 x 16 ' 3-Deck Wet Screen, skid mounted, semi- <br /> portable screen tower structure (20 hp) . This screen will allow a <br /> final separation of "Fill Sand" material before the remaining rock <br /> aggregate is split into stockpiles. <br /> Coarse aggregate material from the 5 ' x 16 ' 3-Deck Screen will pass <br /> through Enclosed Splitter Chutes and be conveyed to one of Three <br /> New Stockpiles; 1 x #4, 1 1/8 x 3/8, and 3/8 x /34 (20 hp, 20 hp, <br /> and 20 hp) . <br /> Additional proposed new equipment will allow the further processing <br /> of "clean sand" recovered from the Cyclones. This sand will be fed <br /> through a Sand Feeder (10 hp) to a Wemco #20 Attrition Machine (200 <br /> hp) which will break down and remove the less resistant sand <br /> particles, with the addition of water. The resultant sand slurry <br /> will be pumped (75 hp) through a Kolberg 8 x 28 Sand Classification <br /> System (15 hp) which includes a 8 ' x 32 ' Sand Classifier and a 44 ' <br /> x 32 ' Sand Screw (15 hp) . This material will be stockpiled as <br /> "cleanest sand" . <br /> v <br /> CONDOR <br />