Plus, advances in technology allow a small surface gold dredge to be carried by a single person to a remote stream or river and profitably process gold-bearing material.Ī suction dredge used along the shoreline works like a large vacuum cleaner by sucking up underwater gold-bearing material like rocks, gravel, sand, and dirt and forcing it through a highbanker or power sluice that is capable of recovering very fine particles of gold. Sandy or gravel river banks contain large deposits of alluvial gold (loose pieces of gold or gold-bearing sand), and dredging is a great way to recover this gold. Enough slope on the box to clear in a reasonable time, not to steep, enough water flow to maintain a reasonable nozzle suction to keep material moving through the hose and not clogging but not over powering, able to run motor/pump at something less than full throttle.īrad, call me Bill, none of this Mr Hall stuff please.Over the last 10 years or so, dredging has resurfaced as a popular form of gold mining (except in California where dredging is currently banned). Try to keep the box discharge above and out of the water. This allows the small stuff drop through into a slow water area, keeping the larger rock moving off the sluice.Īs for volicity, you want enough water to clear the box in about 10 -15 seconds, that may mean suction may suffer some, better to slow down and not blow gold than to hog it through loosing precious gold that one has worked hard to obtain. Helps smooth out the water, slows the water some, helps to settle the gold in the box.Īlso, does your box have a scalper, or punch plate over the upper section of the box ? The material moves up and out of your jet, dropping onto the scalper. Something I was thinking about Brad touches on.Īt the outlet of your discharge into the box, do you have a baffle to smooth out the water as it enters the box ? What type of dredge set up are you using ? Suction nozzle, jet log with/without flair, crash box or something other ?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |