![]() Ima test these taller riffles to see if i could get it to work properly. Found it in the gold pan.īut we ran a test running the nugget first then dredging as usual but when we went to the sluice box it was gone.Ī sluice box need to be made to trap everything that is metal. The 300G copper nugget i found it dredging with the same sluice box. Also would love to see a pic of your subbie □ The rest is a diminishing return situation. The longer the sluice the better to allow for repeated RISE and FALL of the water speed. Nineteenth century gold miners used wooden sluices that were at least 12 feet long, but modern gold prospectors primarily use sluice boxes made of plastic or metal. Bought 3 paint roller trays,which have the drop box built in,fits in a tub to hold it all together,a bit of cut and shut ,fit some riffle matting ,pump ,and fingers crossed. So, DON’T plan to run just 24 to 36 of this mat in a heavy fed sluice and expect high capture rates. Riffles are purposeful obstructions which slow the movement of gold in the sluice so it can be trapped in miner's moss, carpeting, or rubber matting in the bottom of the sluice. Almost all of the gold was 100 200 mesh gold. The sluice box is mounted on the frame at an angle, with the top of the. The long sluice below captured over 20 OUNCES of gold in roughly 3 months. My advice is to add miners moss over the ribbed matting and nothing more needs to be done. The riffles in the dry washers sluice box are pointed up towards the top of the. I did add a river sluice behind my box at one point and the extra box being wider did help but back to more complex. Just keep in mind not to hog the material and overload the riffle tray, that's where I get goofed up. but can do really well on the chunky nugget stuff, bird shot on up. Basically the sub surface dredge is a poor choice for an area that has lots of fine gold. All the nuggets got caught in the first or second riffle, the fines are another story. I don't believe I lost any gold that had size to it. I did have success with a sump set up that fed to a small 2 inch dredge but let that go due to the fact it was complex and negated the benefit of a light weight sub surface dredge. The grizzle bars did not work, they trapped the rocks under and would not release them. Watch the sand in the riffles.when you have the proper water flow this sand will be dancing around within the riffle.Do not try to adjust the box to run the riffles clean! The heavy material within the riffles works much like jig shot which allows the gold and heavies fall through the suspended material and the lighter material just floats right past.Don't worry about the 300 GM nuggets getting passed thru the sluice, they never actually get passed the hand of the dredge operator to even have a chance of being sent to the tailing pile!!!!! Water flow on drop riffle sluice boxes needs to be a bit more than the old style boxes due to the flatter angle. Gold particles will gain traction, slow & stop on rubberized conveyor belting. We covered the sluice box floor & side walls with conveyor belting. if I am running my martin stream sluice with riffles I run it about 1 inch per foot. with the gold hog stream sluice I run it at about 1 1/4 - 1 1/2 inch per foot drop, a hair steeper than some. of an angle iron riffle were less likely to be removed with. me personally it depends on which sluice I am running. sluicebox is a rectangular flume containing riffles on matting, through which a dilute. the general rule of thumb is 1 inch per foot and a deep V water flow at the head of the box. Riffle section was held down with metal wedges, via an angled slat, to pound wedges against. Each sluice and setup is a bit different. They are simple and have been in use all across the. The flatter you run the box the better the recovery rate on fine gold. Expanded metal sections were held down with 1 inch angle iron bolted at the side walls. A sluice box lined with riffles is one of the oldest forms of gravity separation devices still being used today. Without ever having sand just sit on the slick plates between the riffles. Your goal when running a drop riffle sluice box is to run the box as flat as possible. Larger drop riffles allow for higher production and higher volumes of water without washing away the gold.ĭrop riffle sluice boxes are used a bit differently than old style Hungarian riffle sluice boxes! V-groove indicator riffles allow you to see the values right away. ![]() This ABS plastic design utilizes the same drop riffle technology as our bucket sluice concentrator and our highbankers. Light weight, easy to use, even easier to clean out. This sluice box is made from durable ABS plastic to take years of abuse from your prospecting. This is our production sluice for running higher volumes of pay materials. Our drop riffle River Sluice is built for the serious miner!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |