Jump to content
tvanwho

Fine Gold Recovery Devices for Cheap?

Recommended Posts

I watched some of those guys using a paint brush

to move gold particles in slow moving water in a

metal trough, like a sluice, without the riffles,

for a simple description. It had a small header

box, with ball valve to control the speed of the

water. Worked really good.

I learned one of the secrets of the thing was the

black finish was none other than a metal primer spray,

which provided a slight slowing action of the descending

gold and other particles. There could be primer that

is more coarse than others, but I wouldn't know which

might be best for the project.

**(If the sluice is aluminum, as most are, I would be sure

to use primer spray paint FOR aluminum. Don't know about

sluices, but it does make a difference with boat motors.)

Boat motor primer is usually a yellow color, so maybe the guys used what they had, being plain old black primer.

Regulation of water control amount and speed, angle of the box itself, is key, obviously.

Once you get a few of those few items, and with experimenting,

you may have a relatively inexpensive method of fine gold

recovery. Oh yes, don't forget to have a capture bucket at

the end of your setup, in case you think you may have

lost some of your fines.

Hope this helps...

Gary

Share this post


Link to post
Share on other sites

I've heard of people putting sand in paint and then painting the bottom of a bare sluice box.   Like a non-slip step.

Share this post


Link to post
Share on other sites

I am using a product that is intended to be used as shelve liner. It's a very thin rubber mat called Easy Liner and sold by Walmart. It's the same matting used in the Black Magic machine posted on page 1. I used 3M 77 spray adhesive to secure the mat to the aluminum. The mat has a slight texture to it that gold sticks to.

 

 

DUCK Brand: http://www.duckbrand.com/products/shelf-liner/solid-easy-liner/1228

 

Where To Buy: http://www.duckbrand.com/products/where_to_buy/1737

 

 

Share this post


Link to post
Share on other sites

How would this wonder mat do in a gold pan or maybe 1/4 of the pan surface, or up on the pans slope, might be worth experimenting with it?

  Ps, I got the cheap ABS Black Miller Table off Ebay for $ 50 shipped and altho it included a few extras like Teflon tape and a cheap ball valve, it is NOT as easy to get up and running as the YouTube videos implied. Altho,I have to admit I did NOT like the idea of using a 110 volt pump to power the setup, scares me to think of electric shock hazards? So, I found an Atwood 500 gph 12 volt bilge pump I had and am attempting to mate that to the ball valve.Had to go to Ace hardware and get 2 garden hose adapters with 1/2 and 5/8 inch barbs on them plus garden hose screw on fittings on the other ends, 1 female and 1 male. And finding a suitable tub to fit wasn't easy either.I finally acquired a 10 gallon tote from Ace hardware that is gonna have to work with the sides squeezed together a little bit and a small tub inside to catch my tailings. The cross bar that was provided for the table to set on was just that and no brackets to hold the table in place so I drilled and bolted on 2 right angle metal brackets today. I would say this Miller table is ok for lite duty home use but field use is doubtful unless you baby it.The ABS plastic is almost paper thin, not the rugged thick ABS black plastic like is used on Bazooka sluices, like it needs to be. 

  I hope to have all the bits and pieces together tomorrow for a test run.I also just found my California Sluice Box company concentrator sluice so will try that too. I can fit a garden hose up to that one and it is rugged enough for field use. It uses those drop riffles in a narrow 3 inch wide x 2 foot long sluice to catch the fines and mounts on a 5 gallon bucket.

  Now,if I could just find my digital camera? It disappeared after my last mining trip.Small cameras are nice but they can disappear easily. KInda hard to wrap them in bright red duct tape like my shovels so they stand out better?

 

-Tom V.

Share this post


Link to post
Share on other sites

How do I classify my fines for the Blue Bowl  without having to spend a lot of money on various mesh screens? What mesh is window screen? How about them colander things we use in the kitchen with the cone shape fine wire mesh? I watched several YouTube Blue Bowl videos but they don't really explain how the Blue Bowl works or the theory behind it? I never saw the gold results afterwards either?

   I actually do have one of these bowl things but never felt very confident on using it, so it sits on a shelf. Guess I need to get brave and try it out before winter gets here. I printed out some directions for using it tonite, will need to look it over and see what parts I have  or need to buy yet.

Thanks for all the responses.

 

-T

TVANWHO - Window screen is generally measured at about an 18x14 wire mesh - found that info and a lot more on wire screens and wire cloth here: http://www.bwire.com

 

As far as spending a lot of money on wire screens and attaching them to your bowl - I do not believe that as a DIY project, this would be hard or expensive to execute.  Simply go to the local hardware store - ask what they have laying around - and generally they will have something fine enough for you to use.

 

Wire mesh - unless you are buying a huge quantity, a rare metal, or something that is so fine that it becomes hard to find and acquire will and should not be very pricey.  Simply cut the mesh to the shape you need with aviation shears and fasten it to your bowl or funneling device!

Share this post


Link to post
Share on other sites

You guys have any thoughts on these Underflow Mini Sluices 

 

There is a ton of youtube videos.

 

Here is the web site of the builder, does look pretty easy to build one DIY.

 

http://grumpyprospector.com/grumpy_prospector_new_003.htm

 

Ivan

Share this post


Link to post
Share on other sites

Just my personal opinion but when it comes to sluices just give me a good old aluminum box with carpet and remove able steel riffles. Good old Keene A-52 is still the standard as far as I am concerned.

  • Like 1

Share this post


Link to post
Share on other sites

  • I think most people don't know how to clean the green carpet in the a52. that green carpet catches fine gold, but you have to wire brush the carpet in a tub of water. if you have never done that with your carpet, try it.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Jim in Idaho
      I've been trying to come up with a unit to recover gems dry, but finally realized that the "granular convection" problem can't be defeated. In the process of building and trying various ideas, I came up with this unit. While the dry recovery of gems requires some very tight classifying, and thus isn't practical, I tried it for gold, and was simply amazed at its abilities for heavy metals. I have tried it on all sorts of raw materials, running bank feed at roughly 2" minus, and have yet to find a material it doesn't work on to one extent or another.
       I ran it dry...no water, on damp material at the LDMA Blue Bucket outing near Baker, Oregon a few weeks ago, and recovered flour and black sand from old tailings from previous outings. Running wet, the day before, on new material I recovered very near 100% on black sand and gold in front of several witnesses. They suggested re-running the tails, and zero black sand, or gold was found. Last weekend I attended a local club outing at Salmon, Idaho. The material was a heavy clay with lots of rocks....not a fun material, at all. At the common dig, one of the guys next to me, running a highbanker, mentioned that my little unit was handling the clay really well. I was the only person running 2" minus directly into the machine, and the rocks were agitating the material so the clay broke down, and the rocks were mostly clean before they went out to tails. The day prior to the common dig I went down to the locale the common material had been hauled from, and ran the material dry. This was  a nasty, damp material. I expected nothing and was surprised to see both black sand and gold when I did the cleanup. Certainly I lost quite a bit, but any recovery working dry from damp material is an accomplishment. This unit works wet or dry. Very little dust running dry. Very low water requirement when running wet...roughly 50 gallons/hour.
       The full utility US Patent has been applied for.
       You can see the prototype running at Bonanza Bar on the Snake, along with pics of the recovery here:  
       
      Jim
    • By kiwijw
      Hi there RR, All this gadget is doing is mechanically classifying material into a gold pan. Nothing you couldn't do with a manual classifier over your gold pan which you could possibly get away with. I know with my sluice boxing I made & use a bucket classifier than can process a lot of material pretty quickly to feed down the box. 
       
       
       
       
       
       
       
      Clean up time
       

      Good luck out there
      JW 
    • By idahogold
      Super Cool! If it can handle the punishment of Hardcore Diggers? Enjoy! Cheers, Ig
       
    • By Steve Herschbach
      I tripped over this extensive article, available as a free download. Here is the abstract:
      The article sets out to clarify the special character of the North American gold pan and why it remains so popular – in spite of widespread dissatisfaction and many modifications and innovations. The North American pan is distinctive in being circular with a flattish floor ringed by an outwardly sloping wall. Its identity is confused by over-use of the terms 'pan' and 'panning'. The North American pan gyrates in a distinctive orbital motion driven by both hands of the panner. Although many other motions are resorted to (tapping, to-and-fro, tilting, and tick-tock), it is the orbital motion and flattish floor that together distinguish the pan from most other hand-held gravitational devices. In spite of its enduring popularity, no scientific tests have been published on the North American gold pan or for any of the innovations covered by 30 US patents awarded since 1861. It remains unclear if the North American gold pan is more efficient at recovering fine gold and flat gold than is a lotok, batea, dulang, ninja bowl, grizzly pan, mat, bucket or any other sort of hand-driven gravitational device. Some innovations are long-forgotten but merit attention. For instance, bars to keep the panners hand clear of the water, cables to hold large heavy pans, and several pans designed for panning without any water. Traditionally the North American gold pan was a combined digging and washing device, but today most models are not designed for digging and require a spade to be used. 
      Gold recovery in Gold Pans -the term... (PDF Download Available). Available from: https://www.researchgate.net/publication/313562132_Gold_recovery_in_Gold_Pans_-the_term_'Panning'
       
    • By M1dn1ghtN1nj4
      I have been working on this for a couple weeks.  It's a collapsible, customizable, self-contained, super light, 3D printed sluice box!  I know there are other folding sluice boxes, but none of them actually fit in a backpack, or are light enough to carry in one hand.  This solution would be EXTREMELY helpful!
      I'm on my phone trying this, so when I get to my laptop, I'll write in a bit more.
       
       
      So I'm currently in the CAD stage.  I have a guy that does 3D printing for me, and his machine is limited to 12"x12"x15" so I might have to shrink the size of the project down to fit, as I don't have access to, or can even afford, a larger 3D printer.
      I have this up on Patreon to attempt to raise some funding to start getting prototypes printed, and boost this project towards the finish line!
      This is my Patreon page:
      https://www.patreon.com/M1dn1ghtN1nj4
    • By Sourdoughmoe
      Check out my new setup for those remote areas where gas powered engins aint allowed

×