The water flow volume will be different for different materials. This then will be the minimum water flow that you want to maintain in your Gold Well Sluice for proper operation. To do this you should set the water flow rate low, add a few scoops of dirt, then while watching the Gold Well pockets, slowly increase the flow rate UNTIL you see the material in the Gold Wells begin to rotate.
The flow is in the proper range when particles in the vortex pockets show circular motion. Once the desired angle (8% pitch is recommended to start) and level are established for the sluice, you will want to adjust your water flow. MANUFACTURER'S INFORMATION ON PUMPS: You will need a 2200 gph pump or better. The Vortex Drop Riffle Sluice thinks it is a concentrator and is truly new and improved technology! The horizontal wells will of course trap larger pieces of gold.
The heavier materials move more slowly through the sluice, along the bottom where it is forced to cross the spiral Wells where it is trapped. The slots create turbulence sufficient to cause light material to be forced up into the upper laminar flow regions of the water flow so they will be quickly removed by the water stream flowing through the sluice. Horizontal grooves are not designed to trap gold, they are mixing Wells. When a piece of gold crosses this vortex, it finds no stable bed to rest on and like a heavy object dropped in a bucket full of ball bearings being vibrated around, it drops to the bottom, where it stays, because there is no force coming up from the bottom to flush it back out. This vortex keeps material in the spiral shaped Wells in motion, causing light material to be flushed out easily and concentrating heavy material. The Gold Well Vortex Drop Riffle Sluice works by creating a gentle, vertically oriented vortex. Since the majority of the available gold in the world is micro fine and ultrafine gold in the 30 micron (.0011 inch) range, you want a sluice that can collect that gold and keep it from running out the end. This Gold Well Sluice was designed to recover ultra fine gold that traditional sluice boxes just might be missing. No more carpets, matting, or miner's moss to clean up! Sluiceboxes haven't changed much in the last 100+ years. FREE SHIPPING on Gold Well Vortex Drop Riffle Sluices!
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