The sluicing system has three boxes that are independently adjustable, and with anywhere from 20 feet of sluice box on our 50-ton units to 40 feet of wider boxes on the 200-ton units, gold recovery is excellent. Next, the screen deck further classifies the material, and sub-.25” (6.35 mm) material drops into the sluice boxes, remaining sub-1” material passes through the nugget trap into the final riffle set for capture, and larger rocks get discarded. Classification begins when the material is placed on the grizzly bars, and high-pressure water separates the sub-1” (25.4 mm) material from the large rocks. ![]() Each machine is a complete portable plant there is no need for additional screens or sluice boxes! At the top is an extreme duty grizzly bar section that will take up to 24-inch rocks (91 cm).
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