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  • Dredge Nozzles Gold Rush Trading Post

    Dredge Nozzles If you're wondering how a gold dredge can literally suck up gravel from the bottom of a stream without the gravel going through the pump and destroying it, it is because of a handy device called a suction nozzle or power jet nozzle.

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    Jobe and Keene Suction Nozzles 1.5" to 4" Ideal for shallow water dredging these dredge suction nozzles are precision manufactured by Jobe and Keene from thin ... » Learn More. a diagram of a 3 inch jet nozzle for gold dredge how to make ... Plan and design your own home made suction dredge for gold mining.

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    I want to build a 2" suction nozzle gold dredge but I dont know how to do it. I make things by cutting and welding metal tubing and I believe the dredge is using a venturi affect to create the suction at the nozzle. ... I have some 3/4" diameter tubing, would that work or do I need something else to make the jet? Does the ¾ jet protrude ...

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    Apr 17, 2013· 3 in 1-That's how I have my normal working power jet. It's worked well for the last three dredge seasons! I thought an infinity jet might give a little more suction.

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    May 29, 2015· Suction nozzle to infinity jet . General. General Board. Archives. Articles. Historical. ... Now I've also built my own dredge, set up currently for fine gold recovery it works ok but there's always room for improvement. ... If it works, I have enough parts to build a 2 and 4 inch I-Jet, this is for a 3 inch I'm working on now. Attachments ...

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    Dec 10, 2014· Here's a PDF file for a jet tube, which is similar to a suction nozzle, the main differences is that the pressure inlet pipe would be curved back toward you for a suction nozzle and the total length would be shorter, also you would want the tip angled instead of straight, but this PDF file will give you the dimensions you need for good

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    Home Made Suction Dredge. ... First you have to decide if you want a suction nozzle or power jet type. The suction nozzle puts the high-pressure water in right at the nozzle. ... If you would like to look at some more info that I have done up on using a gold dredge, including a diagram as to how a suction dredge works, take a look at:

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    Apr 16, 2014· 3.14 x (1 x 1) = 3.14 sq in for a 2" jet 3.14 sq inches x 7% (.07) = .219 sq. Inch for eductor Now for the tricky part: convert backwards and finally come up with a

  • DREDGE SUCTION NOZZLES You Struck Gold!

    of jet size see jet size on the material chart. Prior to welding make the following bore-sight fixture. Cut a disk of wood or similar material that will fit snuggly inside the outlet end of the tube: now drill a hole in the center for a dowel that will fit snuggly inside of the pressure jet to keep the jet precisley aligned for best performance.

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    #ke-sn3 outlet size: 3" inlet size: 1.5" $160 #ke-sn32 outlet size: 3" inlet size: 2" $165 #ke-sn4 outlet size: 4" inlet size: 1.5" $200 #ke-sn42 outlet size: 4" inlet size: 2" $205. Dredge nozzle sizing: Example: A ke-sn32 dredge nozzle (measures 3" x 2") --- the suction nozzle outlet measures 3 inches and will work with our 3 inch suction hose. It has a net weight

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    May 01, 2013· BINQ Mining > Ore Process > a diagram of a 3 inch jet nozzle for gold dredge how to make 1; Print. a diagram of a 3 inch jet nozzle for gold dredge how to make 1. Posted at:May 1, 2013 Plan and design your own home made suction dredge for gold mining.

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  • 3 inch prototype dredge nozzle YouTube

    Aug 29, 2015· From researching dredge nozzles, this was supposed to be the best style, the next was a tri-jet, then a standard suction nozzle. From the research I did, I found the last two worked best with a true dredge pump, where a Nozzle like I built worked best with a low pressure, high volume pump.

  • Keene 2" backpack dredge? Alaska Outdoors Forums

    Sep 01, 2010· I hav'nt used the 2" for the simple fact that you can buy a 4' sluice box and shovel the material in it. I think the box cost's about $100.00 and it

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    Keene 2.5 Jet Flare Dredge Suction Nozzle with. . a diagram of a 3 inch jet nozzle for gold dredge how to make . Chat With Sales. Keene 3' Jet Flare Dredge with P180 Lynch Mining, LLC. Keene 3' Jet Flare Dredge The KEENE 3' JET FLARE design . Keene 3' Jet Flare Dredge . The Ultra 3 features our high-performance 3-inch sluice

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  • Gold Dredge Dredging Dredges Gold Rush Trading

    The size of a gold dredge (1.5 inch, 2 inch, etc.) is determined by the diameter of the suction hose the larger diameter the hose, the more material can be processed. 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 the sluice box

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  • Rebuilding a Keene 5 inch triple floating dredge Gold ...

    Dec 27, 2013· The way to maximise fine gold recovery with this particular dredge is to make sure the nozzle man does not over feed the suction hose when working underwater. The type of frame you have was a poor design because bungee cords were used to hold the frame to the floats.

  • Gould Engineering Bazooka Dredge

    The main advantage by using the Suction Nozzle is reducing the amount of Horse Power and Pump needed. For example, a 5.0" Dredge would normally take (2) 5 or 6 HP (Horse Power) Motors to run it. Where as the efficiency of the Suction Nozzle would only require (1) 5 HP Motor to operate it.

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  • Suction nozzle to infinity jet Gold Dredging Forum

    May 29, 2015· G'day weary1, My guess would be that there will be an increase in efficiency by replacing a suction nozzle with an infinity jet, if only because a jet will be sucking up the suction hose, rather than the pushing that occurs with a suction nozzle.

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  • Dredge & Highbanker Parts & Accessories

    1 1/2 Inch Dredge Adaptor . Jobe 2 Inch Mpt To 1.25 Inch Slip Adaptor List Price: $19.95. ... JOBE 2 x 1.25 in Suction Nozzle. PROLINE 3 Inch Foot Valve Our Price: $115.00 . Sale Price: $115.00 ... Gold Buddy Magnum 10 inch Extension Sluice w/ Stand 20 Ft 4 Inch Clear Suction Dredge Hose Our Price: ...

  • FOR A PORTABLE GOLD DREDGE Rosewind Mining

    A high velocity jet stream is created within the jet tube producing a powerful vacuum. As indicated in the diagram gravel is dredged into the suction hose and is delivered to the sluice jet flare. As a slurry of water and gravel enters the jet flare and is spread evenly over a classifier screen.

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    You will spend more time towing your dredge up and down, Dahlke 5-inch Tri-jet Power Log For 5 Inch Gold Dredge, underwater venturi dredge pump for sale . Chat With Sales » 3.

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  • The Gold Dredge Keene Engineering, Inc,

    The Surface Dredge: As the heading ofthis section implies, surface dredge floats on the surface of the water. The material is pumped to the surface through a suction hose into an efficient sluice box that is capable of recovering extremely fine particles of fine gold.

  • Suction Gold Dredge Operation & Components

    The riffles and carpet are removed and all material (concentrates) in the box washed into a tub and panned out with a simple gold pan. Larger dredges may employ gold wheels or other devices to aid in the cleanup of the concentrates. Suction Gold Dredge Diagram. The diagram above shows a basic suction dredge flowchart.

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    2.5" x 1.25" Suction Nozzle This suction nozzle works with our 2.5 inch suction hose and has a net weight of 3.5 pounds. A 1.25 inch pressure hose is easily secured to the nozzle with a 1.25 inch threaded coupling.

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    Apr 17, 2013· 3 in 1-That's how I have my normal working power jet. It's worked well for the last three dredge seasons! I thought an infinity jet might give a little more suction.

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    Nov 25, 2012· I made 6 suction nozzles (1" 1/2, three 2", 2"1/2, and 3") this year, part need and part experiment. My costs for each were between $30.00 for the 1"1/2 and $43.00 for the 3". 6 weeks ago July/13' i made a 4" nozzle, it works excellent i might add i made it on the super cheap.

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    What a dredge manufacturer calls a 5" dredge may be a 4" intake nozzle dredge for permitting purposes. Nozzles sizes may be up to 2" smaller than hose sizes. A gold dredge is powered by a motor and pump. A common misperception is that gravel is sucked through the pump. The pump actually pumps only water, which is delivered to