A sluice box lined with riffles is one of the oldest forms of gravity separation devices still being used today. They are simple and have been in use all across the world for thousands of years. ... Build Your Own Gold Dredge: Dredging for Gold Nuggets: Our Free Colored Gemstone Information Encyclopedia: Gold Sluice Box Plans: Gold Investment ...

simplicity of sluice-boxes are hard to beat". The same still applies, although sluice design has progressed since. Water injection into the capture zone of a sluice-box, marketed as hydraulic riffles, represents the latest major development. After L.G. Heron filed a patent in 1987 for the technology it remained poorly understood or

The Keene A52S Super Sluice Box is the first sluice that allows you to dump unclassified material through the box at much higher volumes than ever thought possible while still retaining fine gold! Not only does this sluice a eat material like no other, it is the easiest and fastest sluice to set up in the world. I can'

By adjusting the height of the lower screen over the plastic riffles, and the slope of the sluice box, we are able to control the amount of water-flow over the lower-profile riffles.

Slow Flow Dredge Riffle Screen. $47.95. Quick View. Woven Wire Riffle. $29.95. Quick View. A52S Sluice Extension Kit. $159.95. Quick View. MiniMax Power Sluice Concentrator. $749.95. ... 8" High Performance Double 3 Stage Sluice Box. $3,695.00. Quick View. Sluice Bucket Recovery System. $225.00. Categories. Dredges; Dry Washers; Diving ...

The point you made about dredge box riffles being closer together is that they are a fast water riffle set up. They have to be for a dredge to get rid of the bigger material that goes down them. With the riffles closer together you …

Choose a sluice box with riffles appropriate for your gold-bearing needs. Capacity And Flow Rate. Evaluate the sluice box's capacity and flow rate based on your anticipated use and processing needs. Larger sluice boxes can handle more material but require more water and space, while smaller sluices are more portable but have lesser processing ...

The solution is to use Hydraulic riffles in a sluice box. But ... hydraulic riffles are not all that practical for installing on a small portable dredge. A dredge can easily be built with hydraulic riffles installed, but it would then be a …

So mind the sluice box. Tending the sluice: Each time you dump a load of gravel into the sluice box check the riffle section for large waste rocks which may be too big to wash down and are hanging up. Remove these with your fingers immediately because these large rocks are affecting the flow of water through the sluice box. If a rock is lodged ...

Like you said the dredge box riffles are a lot closer together & I have always based my riffle spacings along this ideal. I have a 3" dredge box & a 4" dredge box. The riffles in both boxs are 1" high & spaced at 3.25" but the 3" box they are 45 degree & the 4" box they are greater probably 60 degree like you said.

A backpack dredge is a portable dredging system that contains a sluice box, riffles or carpet, a pump, and the necessary hose and fittings. A backpack dredging system is an affordable way to sluice gold in remote locations. As a self-contained unit that is transportable by backpack, prospectors can carry their equipment for extracting gold from ...

Every prospector has his or her own opinion as to the best material to have under the riffles of your sluice box— Deep V Matting, Carpet, or Miners Moss. There is no single right answer just like there is no single right answer for which brand or size of sluice to use— the one you take to a beach for fine gold recovery is probably not the same sluice you should use in a …

Sluice boxes process material best when receiving it from a steady feed. Too much material dumped at once into a sluice box has a tendency to overload the riffles and choke off the concentrating-action behind the riffles. This will cause gold to wash right through the sluice box as if there were no riffles present at all.

The riffles, or gold traps in the sluice box are best described as "Hungarian Riffles". This type of riffle has proven to be the most efficient gold recovery system. As material flows over the riffles …

This is what Keen uses for there 4" dredge it should be close for all and it does not heart to have the sluice box end in the water you should go by what the material in riffles look like. there should be about 3/4 of the riffle with black sand and small pebbles with larger pebbles down stream from the riffle with a small patch of expose carpet in front of the next riffle it should look …

USA made Jarvine Riffles available in various sizes. Screened fluid bed design traps fine gold without clogging, perfect for high bankers & dredges. ... or a baffle for your high banker or dredge. It allows for the fine heavy's to slow down …

The A52S can be expanded into a highbanker/dredge system if you want to increase production and get more gold. This sluice box takes the standard in the industry for decades, the A52 and adds on all the features to super charge it. ... latches, screens, and riffles are simply bulletproof and should last for years. The performance of this sluice ...

Nathan Makowski (brother of Bernie, the inventor of the vortex drop riffle sluice) used the Gold Well sluices on a dredge during the 2013 summer filming season in Nome, Alaska. Performance was exceptional! ... rinsed into the bucket from …

This dredging riffle is for use with the A51 style sluice boxes. Will fit most 3' long sluice box.. $61.95 . Add to Cart. Add to Wish List. Add to Compare. Dredging Riffle 10" x 29" This dredging riffle is for use with the A52 style or most 4' sluice boxes with a 10" wide by 29".. $83.95 . Add to Cart. Add to Wish List. Add to Compare. Hi Low ...

A sluice box should be set up in a creek or river with a steady flow of water, so that the lighter materials can get flushed out of the sluice box, while the heavier gold and black sands are trapped. As a general rule of thumb, it should slope …

A suction gold dredge is basically an underwater vacuum cleaner. Material is transported from underwater to the surface and run through a sluice box to capture the gold. A sluice box works because gold is 15 times heavier than sand and gravel and so is easily trapped by the riffles and carpet in the sluice box.

If the sluice box is working properly, approximately one third of the riffle should be visible after pumping clean water for a minute or so. Aloss of values can also occur if the ratio of solid …

Sluice Box. The sluice box is where the magic happens, so to speak. Inside the box is a series of textured riffles designed to catch particles of gold. Nuggets and particles sink down into the riffles, while non-gold materials like excess sand and dirt get washed away. Pro Tip: As with all the other components of your dredge, the sluice box ...

The New Keene 3 Stage Sluice box. "Sluice technology of the future" Sluice Box Tilt Adjustment Move the sluice Box forward to increase or backward to decrease the angle. The proper sluice box angle adjustment can affect the recovery of values. If the sluice does not have enough angle the sluice box will "load up" causing the riffle openings ...

The 54″ Ultra Wide Sluice Box with everything you need to use in creeks and streams. Flare, Matting, Expanded Metal, Hungarian Riffle Tray and New improved quick release break down Stand, and Carrying Handle for easy transport. Also included is our first Highbanker/ Dredge ready Hopper to convert your Sluice into a Highbanker/ Dredge or both.

Sluice box riffles have also been recently further improved with a new zinc chromate finish providing even more durability. As a result of this improvement the color of the riffles may differ from the picture. ... It straightens out the sluice so you can use it as a dredge, power sluice, highbanker, etc. A52 OR JOBE6504 Hand Sluice Extension ...

The Hungarian riffles aid in the breaking up process. A drawing of a three-box sluice appears on a following page. This design is patterned after the 'Yukon zig-zag' and permits many feet of sluice box to be stacked up in only four feet of length. By adding the wheels and wheelbarrow-type handles, the whole rig is easily moved from place to place.

The sluice box riffles feature Uni-Body construction, the riffles are precision laser cut from a single piece of 18 gauge steel and then formed into ultra light, sturdy steel riffles. These are then zinc plated for long, rust-free service.

Riffles cause small barriers to the water flow which creates eddies in the water, giving the heavier material (black sand and gold) a chance to drop to the bottom, behind the riffles. The "upstream" end of the sluice can also have a flare to aid …

Dredge Riffle Steel for 54-inch Ultra-Wide Sluice Box. SKU: 00155. RIFFLE ONLY! Sluice Sold Separately. Price: $75.00. Add to cart. send to friend . Key Features; Reviews (0) (Use on our 54" Ultra Wide Sluice Box) Larger, deeper …