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Suction is created in a special venturi-tube in-between the main suction hose and the sluice box. In cooperation with Washington State authorities, suction dredgers proved that non-cooked hot-dogs survived a dozen passages through a 4-inch dredge without any damage. Suction dredges are classified by the diameter of the suction hose.
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. The sluice box can either rest on the bank, or float on the surface of the water.
6 HP Power Sluice with 12 Foot Sluice Box. 4,495.00. Quick View. 6 HP - 3 Inch Dredge Combination with 8 Foot Sluice Box. 3,895.00. Quick View. 6 HP - 3 Inch Dredge Combination with 12 Foot Sluice Box. 4,495.00. Quick View.
DREDGE SUCTION NOZZLES By Dale Russell Suction nozzles can easily be home made , with some ingenuity amp a few tools. No matter what size you want to make from 1 up to 6 , you can purchase exhaust pipe with that outside diameter OD Power jets measure the
On most suction dredges, the volume of water being moved through the sluice continues at the same steady flow during production speed. So adjusting the water velocity to set up the dredge right is accomplished by changing the slope of the sluice box itselfwhich will speed up or slow down the flow of water over the box.
Apr 12, 2013 You have hit upon the bane of the suction dredge design. Necessary water need for suction and material handling, but what to do with all that water once it hits the recovery system. It seems to me suction dredges are designed to more material, not for gold recovery.
Keene 5 Dual 6.5 HP Honda Dredge with 3 Stage Sluice. 6,899.00. Able to operate blaster nozzles to blow out bedrocks amp crevices, Keenes 5 Dual 6.5 HP Honda Dredge with 3 Stage Sluice is a miners dream. SKU 5211HP. Call now to order 855 721-7699.
6.5 HP 3 Inch Ultra Mini Dredge. 3500P. Model 3500P comes complete a 6.5 horsepower engine, 20 feet of 3 suction hose and a 14 x 48 sluice box. Equipped with a P180 pump, our new oversized jet flare and jet with suction hose quick coupling. Float dimensions are 60 x 10.5 x 10.5 and Floatation assembly is 60 x 40 .
Jul 28, 2011 Jul 28, 2011 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. A power jet puts the high-pressure water in just before the sluice box. A suction nozzle is best in very shallow water a power jet produces better overall suction.
Jan 21, 2013 Dec 10, 2014 IzNoGood, You will have plenty of water coming from the dredge hose, so no spray bars should needed, you may need a cover of some type on your hopper so the material doesnt splash out the top, or you may not need one depending on how the material enters your hopper, also with the hosematerial entering your hopper instead of going straight into your sluice you will need to clear
Suction Dredges are an easy way to move a lot of material when youre gold prospecting. We offer a variety of suction dredges from small back-packers to larger dredges that require a team. Most agree, using a suction drege will yeild greater gold recovery than a high banker or hand sluice.
Go to the sluice and remove all the large rocks, this will discharge any sand and small gravel trapped around the rocks. Slow down the motor to idle speed, place your bucket underneath the end of the sluice, lift up or remove the riffle bars, If you dredging for gold and your dredge has carpet, roll up your carpet and put into a container, then ...
Combining a power sluice and portable dredge creates a very efficient gold recovery system that can be used in most any situation. Typically these dredges have 1 12 to 3 inch suction nozzles and are designed to work in shallow water without the need of underwater diving equipment or
Keene 2.5 Jet Flare Dredge Suction NozzleThe KEENE 2 JET FLARE design provides excellent fine gold recovery. The jet flare and water level sluice box gives 30 more suction allowing dredge depths of nearly 30 feet. Also, the state-of-the-art sluice box is more efficient, compact, and lighter. A 150 GPM pump mounted on a Honda GX120 drives the 2 dredges.
4 dredge 6.5 hp with 275 GPM pump with 16 box 5 dredge 13hp 400 GPM with 20 wide box 6 dredge 13 to 26 hp 20 to 26 wide sluice depending on the pumps and horsepower. LOW SUCTION POWER The Pump The first thing we look at when addressing low suction power is if our
Free Plans to design and build your own dredge, sluice, dry washer gold Prospecting Equipment Nevada Outback Gems. how to build a gold dredge Gold Ore Crusher. Build A Do It Yourself, Home Made Suction Dredge Plan and design your own No question that many gold prospectors would love to own a dredge, and dredges ...
2.5 dredge 4 hp engine with a 200 GPM pump with a 12 wide sluice box. 3 dredge 5.5 hp with 250 GPM pump 14 wide box 4 dredge 6.5 hp with 275 GPM pump with 16 box 5 dredge 13hp 400 GPM with 20 wide box 6 dredge 13 to 26 hp 20 to 26 wide sluice depending on
The single sluice box processes all dredged material through a single recovery box. A single box includes a short classifier screen at the entrance, to separate the larger cobbles from the smaller, which are most likely to contain small gold particles. This design is still used in most small dredges, due to their lightweight compact design.
Apr 12, 2013 NO BOLT NEVER EVER do not reduce that intake as then youve taken a tiny dredge and made it into a less then 1 12 tinker toy that useless. You want a suction tip with a knurled-rolled-edge to slightly reduce the intake size.or swivel nozzlewith a ring welded on. That a-52 is a sluice and never meant to dredge with but keep it for backpak fun.