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Thread: Platinum Drywashing

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  1. #31
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    Mar 2013
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    Quote Originally Posted by utah mason View Post
    Thomas Edison experimented with gold recovery using static electricity and failed. Luckily for him he used investors money.
    story of thomas edison's venture into gold mining
    Did any of you who liked this post read the article?

    A few quotes..

    "Edison's arrival on the scene a dozen years later followed his invention of a machine designed to separate non-magnetic iron ore from sand-like particles in the absence of water." Did you notice absence of water?

    "Edison's arrival on the scene a dozen years later followed his invention of a machine designed to separate non-magnetic iron ore from sand-like particles in the absence of water. He was heavily engaged in iron ore mining and processing in the east. His electrostatic separator Accepted a thin film of dry particles to pass over an electrically charged drum. He learned that gold, like his iron ore, would stick to the drum while sand was repelled by it. When Mr. Edison heard about the Ortiz Mountain placer gold perched high above available water, he obtained a sample for testing. It was an immediate success.". Using his machine in the laboratory, the New Mexico gold was separated from sand without the use of water."

    "One of the first results, a decided departure from the laboratory success, indicated that the sand an inch or two below the sun-baked surface contained enough moisture to short-circuit the electrostatic drum. The feed to his machinery would have be dried."

    "The electrostatic separator did not go the way of the Ortiz project. A now vastly improved machine serves a wide variety of metallic and non-metallic industries around the world."

    In other words it works if the material is dry. It doesn't work if the material is moist or wet.

    I guess you guys who liked the post would also say that drywashers don't work? Because dry washers also have to be fed dry material?
    Last edited by chlsbrns; Mar 30, 2017 at 11:52 AM.

  2. #32
    us
    May 2014
    AZ
    Sweep Jig, Whippet Dry Washer, Lobo ST, 1/2 width 2 tray Gold Cube, numerous pans, rocker box, and /home made fluid bed and stream sluices.
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    Quote Originally Posted by DizzyDigger View Post
    Wow! Leave to the ancient Romans to find a use for one on the nastiest plants on Earth.....Gorse, the bane of the Oregon coast. Dense growth, extremely prickly, originally imported and planted along the Oregon coast line for sand dune stabilization but found to be a major fire hazard. https://oregonhistoryproject.org/art.../#.WN04JPnyuUk
    Last edited by arizau; Mar 30, 2017 at 12:19 PM.
    DizzyDigger and Aufisher like this.
    If it can't be grown, it must be mined!

  3. #33
    us
    Dec 2012
    Concrete, WA
    Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
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    Quote Originally Posted by arizau View Post
    Wow! Leave to the ancient Romans to find a use for one on the nastiest plants on Earth.....Gorse, the bane of the Oregon coast. Dense growth, extremely prickly, originally imported and planted along the Oregon coast line for sand dune stabilization but found to be a major fire hazard.
    Yep, seen it and it's nasty stuff.

    Was surprised to see that, among the "Hydrophobic biocollectors", they listed:

    "Oil plants and plants with waxy surface coatings, such as gorse (Ulex europaeus),
    hemp (Cannabis sativa), and grass.

    Left over Sativa stalks might actually be available in the states where MJ has been legalized,
    but I certainly don't recommend anyone use it in a non-legal state.

    If you get stalks grown hydroponically, then you'd have have the perfect set-up with
    "Hydroponic Hydrophobic biocollectors". If they worked, you would make a mint..
    arizau and Aufisher like this.
    Mike (aka Dizz)

    "If you love wealth better than liberty, the tranquillity of servitude better than the animating contest
    of freedom, go home from us in peace. We ask not your counsel nor your arms. Crouch down and lick
    the hands which feed you. May your chains set lightly upon you, and may posterity forget that you
    were our countrymen." ~~ Samuel Adams, 1776

    Dizzy's Super-Simple, Universal Rule of Forum Conduct: Don't be an ass.

  4. #34
    us
    May 2014
    AZ
    Sweep Jig, Whippet Dry Washer, Lobo ST, 1/2 width 2 tray Gold Cube, numerous pans, rocker box, and /home made fluid bed and stream sluices.
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    Quote Originally Posted by DizzyDigger View Post
    Yep, seen it and it's nasty stuff.

    Was surprised to see that, among the "Hydrophobic biocollectors", they listed:

    "Oil plants and plants with waxy surface coatings, such as gorse (Ulex europaeus),
    hemp (Cannabis sativa), and grass.

    Left over Sativa stalks might actually be available in the states where MJ has been legalized,
    but I certainly don't recommend anyone use it in a non-legal state.

    If you get stalks grown hydroponically, then you'd have have the perfect set-up with
    "Hydroponic Hydrophobic biocollectors". If they worked, you would make a mint..
    Whodathunkit. A friend I met in the Navy in the 60's grew up in northern Iowa and said that that stuff grew wild along drainage ditches when he was a kid. It was originally cultivated there for rope production particularly for hawsers during one or both of the world wars. After hemp growth was banned they continually tried to eradicate it and probably still are. Maybe some of the Iowa glacial gold prospectors should read the study too.
    Last edited by arizau; Mar 30, 2017 at 05:31 PM.
    If it can't be grown, it must be mined!

  5. #35
    us
    Mar 2014
    Traveling US to work
    Current Whites DFX Past Garret GTI 2500 and others Prospecting Minelab GPZ 7000 Past SD 2100 GP 3000 (retired)
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    Metal Detecting
    Now does any of that work for platinum?
    Everyone Believes they have gold buried in the back yard... small wonder so few ever look for it.

  6. #36
    us
    May 2009
    Sailor Flat, Ca.
    SDC2300, Gold Bug 2 Burlap, fish oil, ACME handbook for TRUE prospectors (unread)
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    none of it matters in the field with real material being run. The size of gold that will attract and hold is super fine.It is quickly pulled off by the abrading material moving downward. Tuning to it is problematic. as is the way it jacks up your moving parts.
    I'd rather run a big wood puffer with cloth, over an over priced mylar lined keene.
    The serious guys avoid static whenever they can. Gravity and the air do way more for the processing than a static charge ever will in recovery.
    Last edited by Goldwasher; Apr 01, 2017 at 12:55 PM.

  7. #37
    us
    Mar 2013
    Excalibur II
    1,637
    655 times
    Mining, Detecting, diving, spearfishing, bow hunting, duck hunting, treasure hunting, real men!
    Dry air causes static electricity so every drywasher that doesn't have metal legs that ground the unit will create static electricity. For example a wood puffer with cloth would generate static electricity because it isn't grounded.

    Warmed or hot dry air creates more static electricity. The polyester rayon fabric used in keene 191 and some of their other drywashers combined with heated air creates a powerful electrostatic charge that attracts and holds gold and platinum that other drywashers would not retain. The 191 uses heated dry air that dries some moisture,, gravity and a powerful electrostatic charge to capture gold

    If you have significant amounts of platinum it would be best to put out the cash and get a keene 191. They can process a lot of material fast and will recover more than other drywashers.

    Good Luck!
    Last edited by chlsbrns; Apr 04, 2017 at 12:29 PM.
    Customx_12 and russau like this.

  8. #38

    Jun 2017
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    yes dry washing will separate Pt because Platinum is even more dense than gold.

  9. #39
    us
    Apr 2015
    Oshkosh, WI
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    Quote Originally Posted by DizzyDigger View Post
    Yep, seen it and it's nasty stuff.

    Was surprised to see that, among the "Hydrophobic biocollectors", they listed:

    "Oil plants and plants with waxy surface coatings, such as gorse (Ulex europaeus),
    hemp (Cannabis sativa), and grass.

    Left over Sativa stalks might actually be available in the states where MJ has been legalized,
    but I certainly don't recommend anyone use it in a non-legal state.

    If you get stalks grown hydroponically, then you'd have have the perfect set-up with
    "Hydroponic Hydrophobic biocollectors". If they worked, you would make a mint..
    But I wouldn't want to smoke it! Hemp also bioaccumulates other things like mercury, so toking local grown stuff if mercury is present could be very bad in the long run.

  10. #40

    Mar 2013
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    66 times
    All Types Of Treasure Hunting
    Back to the question. A drywasher works by vibration, air, and gravity. Yes it will catch platinum but understand that most gold is less than 100 mesh and platinum runs smaller!!!!!!! Almost all platinum is micro. Drywashers are notorious for not holding fine to microfine gold. Expect it to do no better on smaller platinum. Platinum is paramagnetic, not diamagnetic. The way you seperate it is by running a regular magnet over the sand until all magnatite is removed. Then you go over it with a neodynum which will pick up the platinum and ferrite which is also paramagnetic. You put that in a beaker and hit it with nitric. That will eat the ferrite leaving the platinum. Easy peasy LOL! I have to agree with Clay that talk of static is just that...static LOL! You got to be tougher than a woodpeckers lips to try and make gold with a drywasher I wish you luck.
    rodoconnor likes this.

 

 
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