This means the pump must be full of water and all air removed.
Normal conditions require a sluice box to be cleaned only once or twice a day.īefore starting the engine, the pump must be fully primed. This continuous self cleaning principal allows a dredge to be operated for prolonged periods of time. This force allows the heavier material to settle out of suspension and the lighter, non value bearing material to be washed away. As material flows over the riffles a eddy current is formed between each riffle opening. This type of riffle has proven to be the most efficient gold recovery system. The riffles, or gold traps in the sluice box are best described as "Hungarian Riffles". The lighter non bearing values and larger aggregate are returned back into the water. Often values are recovered and easily observed before they even enter the riffle section. The smaller and heavier particles drop below the classifier screen into an area of less velocity, allowing a slower and more selective classification of values. As a slurry of water and gravel enters the header box and is spread evenly over a classifier screen.
As indicated in the diagram gravel is dredged into the suction hose and is delivered to the sluice box header. A high velocity jet stream is created within the jet tube producing a powerful vacuum. A volume of water is pumped through a tapered orifice (jet), by a special designed water pump. The vacuum on a portable dredge is created by a "venturi principal". THE FOLLOWING INFORMATION SHOULD ENABLE YOU TO UNDERSTAND THE BASIC THEORY OF OPERATION OF A PORTABLE DREDGE.įor more complete understanding on this subject, we recommend you read any one of a variety of books available through the Library of Books, such as The Gold Miners Handbook, Dredging for Gold or Advanced Dredging Techniques. GOLD DREDGE OPERATING INSTRUCTIONS - courtesy of keene engineering. Home > Gold Mining Equipment > Black Sand Magnets (Gold Magnet) > Black Sand Gold Recovery - Part 2 > Black Sand Concentrates > Fine Gold Recovery Equipment > Gold Prospecting - FREE TIPS > Panning For Gold > Gold Prospecting EQUIPMENT (SEE ALL) > Proline Gold Dredges > Diving Equipment > Gold DREDGES for Sale - Keene > Dredge instructions Home > Gold Prospecting - FREE TIPS > Panning For Gold > Gold Prospecting EQUIPMENT (SEE ALL) > Proline Gold Dredges > Diving Equipment > Gold DREDGES for Sale - Keene > Dredge instructions
0 kommentar(er)
