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  • Gold Flotation Production Line

    Gold Flotation Production Line

    Flotation is widely used in gold Processing. In China, 80% rock gold is Processed by flotation. Flotation…

    Manganese Ore Magnetic Separation Production Line

    Manganese Ore Magnetic Separation Production Line

    Manganese ore belongs to the weak magnetic minerals, which can be recovered by high-intensity magnetic…

    Graphite Ore Beneficiation Process

    Graphite Ore Beneficiation Process

    Xinhai usually applying multi-stage grinding process to protect graphite flake from damaged. Applying…

    Gold Cil Processing Line

    Gold Cil Processing Line

    Gold CIL (Carbon in Leach) Process is an efficient design of extracting and recovering gold from its…

    Cu Pb Zn Dressing Process

    Cu Pb Zn Dressing Process

    Adopting mixed flotation-concentrate regrinding Process can reduce the grinding cost, and be easy to…

    Dolomite Mining Process

    Dolomite Mining Process

    Dolomite mining process is the solution of separating dolomite concentrate from Dolomite raw ore. Based…

    the size of the riffles in gold dredges

  • Hydraulic Riffles ? Gold Dredging Forum

    3/12/2009· Hydraulic riffles are placed under a classifier screen and how much classifier screen you use to cover the riffles is very much depend on the type of dredging you will do and what gold you will be dredging But much of whats involved in adapting hydraulic riffles to a production dredge is just common sense One point worth mention about constructing hydraulic riffles

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  • » Setting the Proper Water Velocity Through a Sluice Box

    There is no exact formula for setting the proper water velocity through a sluice box which will work optimally under all conditions for all the different types of riffles being used today Therefore rather than give you a formula I will attempt to give you an understanding of what affects the proper amount of water velocity will cause in a

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  • Gold dredge

    A gold dredge is a placer mining machine that extracts gold from sand gravel and dirt using water and mechanical methods The original gold dredges were large multi story machines built in the first half of the 1900s Small suction machines are currently marketed as gold dredges to individuals seeking gold just offshore from the beach of Nome Alaska for instance

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  • Gold Dredge for sale Only 4 left at 70%

    4\u201d keene dredge \u2013 gold mining (2041 nw vine street grants pass oregon) Sold at 2895 $ Used \u2013 complete and ready to run honda gx200(65hp) p180 keene pump thomas t 80 compressor honda motor only has 2 hours on it new seals in the pump and the compressor has been rebuilt all hoses for the dredge are included with

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  • How to SIZE a Sluice Box Mineral Processing Metallurgy

    This week I went and asked how to SIZE a sluice box to the crew on a large gold prospector forum and other sluice or gravity gold recovery experts and gathered the list of emails and forum posts here below As you will see in summary most can optimize or troubleshoot a sluice box but few or none can size a gold sluice box

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  • 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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  • » The Size of Riffles New 49ers Prospecting Club

    Most recovery systems on suction dredges use fixed riffles to trap gold out of lighter streambed materials as they are washed through a sluice box by a flow of water Riffles are baffle like obstructions fixed in place along the bottom of the sluice box They are designed and positioned so that there is a back pressure created that sucks water

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  • Choosing a GOLD Dredge

    27/09/2017· Dredges featured are two 2 Keene Backpack Dredges two 3 Keene Dredges 4 Keene Mini and a 25 DIY Dredge! Keep in mind this is only a small population of dredges available Don't forget

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  • New Zealand River 5 inch gumboot dredge Gold Dredging

    30/05/2011· G'day Jens and Allan New Zealand River 5 inch gumboot dredge Regards Rob (RKC)

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  • sluice box riffles test

    14/10/2011· Some of our footage You might want to scroll through the slow motion parts Moderate flow rate test Core mine material quartz sand heavies etc found in

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  • gold dredge in Queensland Miscellaneous Goods Gumtree

    Mini Clean up Gold Sluice High Banker size 700mm x 100mm with a 200mm square header box The sluice comes with V matt and miners moss along the length a hinged set of specially designed riffles Best Suited as a clean up sluice for your concentrate cleaned out from the main high banker or dredge Can also be used on site after classifying the material down to about 5mm All our sluices are

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  • GoldHog Sluice Mats GoldHog Gold Prospecting Equipment

    Great for highbankers dredges and stream sluices that have strong flow Its great for catching a WIDE variety of gold shapes and sizes from large nuggets to super fines If Doc could only chose ONE MAT in his highbanker this would be it Like ALL our mats it is sold in 36 (wide) x 6 (long) STRIPS only that you cut to size and

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  • Gold Recovery 3'' Floating Dredge Sluice

    We custom make sluice boxes and dredges in various sizes this 3 unit being one of the more popular choices due to the compact size for driving a large 3 dredge nozzle 4mtrs purpose dredge design flexible 3 suction hose 3 suction tip Fitted with a 3 dredge crash box

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  • gold dredge in Queensland Miscellaneous Goods Gumtree

    Mini Clean up Gold Sluice High Banker size 700mm x 100mm with a 200mm square header box The sluice comes with V matt and miners moss along the length a hinged set of specially designed riffles Best Suited as a clean up sluice for your concentrate cleaned out from the main high banker or dredge Can also be used on site after classifying the material down to about

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  • Proline 3 Gold Suction Dredge akminingbiz

    This dredge builds a stronger vortex behind the riffles to hold the values better plus it doesn't have the tendency to load up on low grade material that other dredges have leaving the riffles unshrouded to do their job more effectively We use Nomad matting in this dredge for the full length of the sluice box This combined with our unique

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  • » Double screen Classification System in Dredging

    This would be for small nugget sized gold That size range of gold is very easy to recover As I discussed in The Size of Riffles the height of a riffle necessary to recover a piece of gold normally does not need to be much taller than the size of the gold you are trying to trap So the first set of riffles for larger gold can be rather short

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  • Keene Engineering Inc

    This is a tier 4 final diesel engine driving a 6 gravel pump The unique thing about this pump is it can pass a 55 sphere Most pumps 6 x 6 can only pass a 15 sphere This pump was engineered for the diamond pits of Africa so it is very robust This dredge can pump material excess of 1000 feet or 50 feet in the air The customer is going

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  • Gold Dredge Dredging Dredges

    A suction dredge used along the shoreline works like a large vacuum cleaner by sucking up underwater gold bearing material like rocks gravel sand and dirt and forcing it through a highbanker or power sluice that is capable of recovering very fine particles of gold The size of a gold dredge (15 inch 2 inch etc) is determined by the

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  • GOLD DREDGING For The First Time!

    7/11/2018· Yes many of you have said that I should dredge but the problem is that there are only limited places where I can use a gold dredge I happen to get an invitation try it out on a subscribers claim

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  • Suction Gold Dredge Basics Steve's Guides

    13/06/2018· The sluice box normally need not be cleaned out more than once a day at the end of the day 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

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  • 10' x 18 Commercial High Volume FINE GOLD Highbanker

    10 foot Long x 18 inch Wide HIGH VOLUME COMMERCIAL Fine Gold Highbanker by Heckler Fabrication will accurately process 75+ Tons Per Hour This unit is designed for accurate high volume recovery of fine gold

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  • Plan and design your own home made suction dredge for gold

    No question that many gold prospectors would love to own a dredge and dredges are very cool pieces of prospecting equipment that will allow you to mine some very nice gold nuggets but the prices for new ones are really highDont forget however that in the earliest days of dredging there were no manufacturers and all small suction dredges were handcrafted units made in

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  • Hand Dredge 5 Steps (with Pictures)

    A hand dredge also called a gold sucker is basically a pump that will allow you to suck up material They allow you to suck up material in hard to reach places such as under rocks and in crevices Hand dredges work extremely well if you are prospecting for gold as they allow you to

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  • Custom Built Highbankers sluice boxes dredge hand

    Heckler Fabrication can custom build you a quality Highbanker Power Sluice Trommel Sluice Box Concentrate sluice Dredge sluice box Hand sluice box or modify/update your existing recovery system w/ any of our many options

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  • Homemade Gold Dredge Lost Files

    23/03/2018· Design concepts construction and test running of a 3 inche suction gold dredge I built

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  • 10' x 18 Commercial High Volume FINE GOLD Highbanker

    10 foot Long x 18 inch Wide HIGH VOLUME COMMERCIAL Fine Gold Highbanker by Heckler Fabrication will accurately process 75+ Tons Per Hour This unit is designed for accurate high volume recovery of fine gold

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  • 3 Dredge Sluice High Banker

    3 Dredge Sluice High Banker Fitted with our custom designed header box 3 dredge Sluice Box Arubber water baffle and perforated plate to protect the gold are at the top of the sluice box We custom make sluice boxes and dredges in various sizes this 3 unit being one of the more popular choices due to the compact size and superb features

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  • What Size Dredge

    You use big dredges which can move the most material recover the most gold and spend the least amount of money doing it Once you're on the gold it's time to bring in a real dredge Some consider this a 5 some consider it a 6 but most professional dredgers use the largest dredge size which is legal right now that's an 8 dredge Most 8

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  • The Gold Dredge Keene Engineering Inc

    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 a eddy current is formed between each riffle opening This force allows the heavier material to settle out of suspension and the lighter non

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  • Hydraulic Riffles ? Gold Dredging Forum

    23/04/2011· In particular if using a production dredge to dredge a widely dispersed deposit of fine gold from the overburden then its well worth while going to the trouble of ripping out conventional riffles and replacing them with hydraulic riffles

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  • best highbanker dredge combo Gold Claims Sale

    30/03/2013· That is a tall order! It is hard to get good suction with low water flow and it is hard to keep smaller gold with high water flow I researched this myself over a year ago and decided a Proline unit was the best but out of my price range and I wanted to use a hydroforce land dredge nozzle It is known that the lower venturi dredge design needs to stay underwater and doesnt like air much

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  • Gold Dredges Gold Dredging Equipment Machines For Sale

    Large materials are worked around or moved aside by the submerged operator to avoid plugging the hose Gravel and water are washed through a sluicebox on the dredge and gold and black sand are concentrated in the riffles Suction Gold dredges discharge tailings and process water directly into the live stream without water water treatment A

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  • Building the Gold Dredge Some Tips

    10/07/2012· Fine tuning the gold dredge working with the mats riffles expanded metal dredge hose connections and more

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  • Gold Dredge Dredging Dredges

    A suction dredge used along the shoreline works like a large vacuum cleaner by sucking up underwater gold bearing material like rocks gravel sand and dirt and forcing it through a highbanker or power sluice that is capable of recovering very fine particles of gold The size of a gold dredge (15 inch 2 inch etc) is determined by the

    Live Chat
  • Gold DREDGES for Sale Keene

    GOLD DREDGES FOR SALE FREE SHIPPING SPECIAL!!! All major brands including Keene Proline and GoldBuddy suction dredges are available from portable backpack dredges to large 8 commercial gold and diamond dredging machines

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  • GoldHog Sluice Mats GoldHog Gold Prospecting Equipment

    Great for highbankers dredges and stream sluices that have strong flow Its great for catching a WIDE variety of gold shapes and sizes from large nuggets to super fines If Doc could only chose ONE MAT in his highbanker this would be it Like ALL our mats it is sold in 36 (wide) x 6 (long) STRIPS only that you cut to size and

    Live Chat