• Gold Dredge - Dredging - Dredges - Gold Rush Trading Post

    A floating gold dredge is essentially a floating sluicebox that uses an engine and pump to create a vacuum and send gravel (hopefully gold-bearing gravel!) into …

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  • the size of the riffles in gold dredges - crusherasia.com

    » The Size of Riffles. ... Gold Dredging has been a popular past ... and a six inch dredge (they are measured by the size of the ... has a tendency to dislodge the gold from the riffles. Gold Dredge. Gold Dredges. A gold dredge is one of the best methods for recovery gold where water is present.

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  • Why Are Dredge Sluices So Short? - Sluicing, Highbanking ...

    Apr 12, 2013· Keene A52 sluice is to narrow and the riffles are to flat to use for a dredge. Hungarian riffles and a wider box to handle the amount of water you …

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  • Sluice Box - dredgenz.co.nz

    Sluice Box on DredgeNZ – Gold Dredge & Minelab Detector Specialists · One of the most practical and enduring methods of gold prospecting involves the use of the… One of the most practical and enduring methods of gold prospecting involves the use of the Sluice Box, a piece of gold prospecting equipment that has been in continuous use for ...

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  • Gold Dredges - The Best Gold Dredge, Dahlke Dredge Mfg ...

    The dovetail riffle creates a J hydraulic elliptical boil pattern that enhances fine gold recovery while pumping large rocks. When the gold is backwashed it slips into the leading edge of the following riffle and remains locked-in until cleanup.

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  • 5.5HP Power Sluice / 3" Dredge Combo - akmining.biz

    Power Sluice Concentrator Only This is the box and hopper assembly with legs only. You provide the pump and hoses. Ideal for those who already own a dredge or other equipment and want to add the concentrator assembly.

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  • Dredging Riffle – A52DR - dredgenz.co.nz

    Description. This riffle tray has larger and deeper sluice riffles for use in dredging. Easily converts your A52 hand sluice into a 2 Inch sluice box.

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  • Wide Drop Riffle Sluice 16" x 38" - goldfeverprospecting.com

    Drop riffle sluice boxes are used a bit differently than old style Hungarian riffle sluice boxes! Your goal when running a drop riffle sluice box is to run the box as flat as possible. Without ever having sand just sit on the slick plates between the riffles.

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  • Keene 4" Jet Flare Dredge 3 Stage Sluice with P180 | A&B ...

    Keene 4" Jet Flare Dredge 3 Stage Sluice. Keene’s “3 Stage Sluice Box” provides excellent gold recovery and easy, convenient clean up. Note below that in Stage 1 the primary riffles can be removed separately from the other riffles and a new plate covered with deep V rubber matting that is also easily removable is placed at the end of the flare for fine gold recovery.

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  • Program Placer Mining - hecklerfabrication.com

    Angle iron dredge riffles should be wed somewhere in the fine gold recovery area to recover gold particles much coarser than 20 mesh and smaller than the upper feed size. Frequently referred to as a "nugget trap" when used in this manner, the dredge riffles

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  • dredge riffles | eBay

    Find great deals on eBay for dredge riffles. Shop with confidence.

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  • A52 Dredge Riffle - A52DR - Gold Prospecting Equipment ...

    The A52DR Dredge Riffle system replaces the standard stream sluice riffles that come with the Keene A52 Sluice Box. The dredge riffle is designed for better gold recovery at the higher water volume flowing through the box when dredging.

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  • Riffles and Sluice Boxes - How do they work?

    The riffles are usually hinged at the upstream end, with a latch at the downstream end. So you can release the latch, and swing the riffles up. Usually there will be a 3/16th inch layer of material called miner's moss or carpet, that resembles in texture, a kitchen scouring pad, laying on …

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  • Dredge Sluice Box: Equipment | eBay

    Hi thank you for looking at these Sluice Box riffles built by us. Midway Welding and Fabrication. They measure 8" wide x 36" long 1/16" material are 1/2" raised.

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  • Specializing in Heavy Metal Separation and Stream ...

    A51DR Dredging Riffle. Larger, deeper sluice riffle tray for A52 or A51 sluice box riffle for use in dredging. Weight 4 lbs. - Shipping weight 6 lbs. HBCDK2 or HBCDK25 Dredge Conversion Kit. This kit includes an adapter for attaching the suction hose to the hopper, a 2 or 2 1/2 inch

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  • gold dredge rifles - crusherasia.com

    Keene A51DR - Dredge Riffle - Sluice Box Plans - Free Gold … These riffles work better with a dredge system because they can easily handle ... box into a monster dredge sluice that can quickly capture twice as much gold. ... Gold Hog - Gold Prospecting Equipment - Sluice Mat .

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  • Gold Prospecting Equipment and Supplies

    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 ...

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  • The Size of Riffles - New 49ers Prospecting Club

    In this discussion, I am mainly talking about the size of riffles. Because, the bigger (deeper) the riffle, the greater (and more violent) water-flow required to maintain a suspended medium of water and material behind the riffle. ... Let’s just use the example of a 5-inch dredge. The nozzle-restriction will allow a 4.5-inch rock to be sucked ...

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  • » Double-screen Classification System in Dredging

    1) Placing a classification screen over top of a set of riffles. This way, smaller-sized material can fall through the screen into a slower-moving flow of water over riffles that are more-protected from higher-velocity water-flow.

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  • Dredging Equipment for sale | Only 4 left at -70%

    Sluice box, riffles,dredge trommel,highbanker. See complete description Notify me before the end of the auction. See price eBay. See details. More pictures. eBay. 10" Green Plastic Gold Pan Dual Riffle Nugget Mini . Lancaster. 10" green plastic gold pan dual riffle nugget. ...

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  • Gold Hog - Gold Prospecting Equipment - Sluice Mat

    Gold Hog prospecting equipment. Sluice box mat and gold high banker, gold dredge, gold sluice box.

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  • Proline Mining Equipment/Gold Dredges 2"

    Due to recent changes in the pump and jetting system on this dredge, the suction power has dramatically increased. This increase in power led to a new classifier with a riffle system that produces a more effective low pressure vortex behind the riffles themselves, improving fine gold recovery.

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  • Hydraulic Riffles ? | Gold Dredging Forum

    Dec 03, 2009· The inclusion of hydraulic riffles on a dredge is the main way known to professional Kiwi dredgers to dramatically improve fine gold recovery when dredging in areas of abundant heavy black sands. However hydraulic riffles are not a practical option to use on a portable dredge as the design would be complicated and the whole dredge would have to ...

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  • New Ultra-MAX dredge fine gold riffle... - Keene ...

    New Ultra-MAX dredge fine gold riffle upgrade. A little over a year ago a good friend of the Keene family, Dave Knowlen, presented us with a new sluice box design.

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  • Gold prospecting dredge sluice riffle inspection. - YouTube

    Jul 09, 2012· Gold dredge sluice riffles after 7 hours run time. Only a moderate amount of pay layer gravels in the box due to enlarging the top cut near the end.

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  • D.I.Y. prospecting & mining equipment parts & supplies ...

    dredge, hand sluice, trommel, dredge, prospecting equipment,dredge, , gold mining,dredge, gold mining ,gold mining, sluice, trommel, gold ... Helping to seal your riffles to the carpet or mat beneath them, Reducing loss of your fine gold. 12" x 4' D.I.Y Sluice Box …

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  • Gold Dredge and Highbanker Plans | My Home Workshop

    Gold Dredge and Highbanker Plans. ... Do this before you build your riffles because you need a little bit of space (6 inches or so) before the material hits a riffle. ... If I had to to it again I would purchase a highbanker or dredge like the ones below.

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  • Dredging Riffle: Online

    This dredging riffle is for use with the A52 Mini Sluice Box. A larger, deeper sluice riffle tray for enhanced performance.

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