![]() By pumping the minus 1/8th material into a controlled flow environment, all the super fine gold, up to 500 mesh, can be recovered from the side sluice boxes. ![]() From there it is pumped into the elevated side boxes. The sump creates a slight negative vacuum on the screen that pulls 100% of all the finer values into the sump. One of the main keys to making the sump work correctly is to use the custom made, heavy woven wire to create the proper drag on finer material which allows the coarser non value material to pass through. The sump was engineered by computer aided design, optimizing seamless flow of fine material that is being drawn into the sump and vacuumed out into the side boxes. Provides a smooth slow slurry as it is classified into the sump, which is located at the end of the main sluice. The large 8 feet by 24 inch wide sluice box will capture the majority of heavy material and disseminate the clay conglomerate. We have also found that the use of woven wire creates greater drag and deposits the smaller material much more effectively and efficiently than a traditional punch plate. We have found through years of experience, testing and customer feed back, that the best method to collect gold is to alter the sluice box into different riffle sizes and expanded metal classifiers. The sluice box is oversized to control the material and allow the fine material as it is classified into a slower velocity zone. The entire dredge was built with state of the art technology including new floats, frame, pumps, power jets and more. This beast outperforms all other dredges in the world for micro fine gold recovery. In 2016 and we developed the Super Max Sump Dredge.
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