Lost Password :: Posting Pictures :: Who's Online :: Stats :: Memberlist :: Top Posters :: Search
:: :: Flour Gold
Unsubscribe From Newsletter



Welcome, Register :: Log In Welcome to our newest member, Agent67.
Users active in this forum:
Users active in this thread: Guest

2 people online in the last 1 minutes - 0 members, 0 anon and 2 guests. (Most ever was 29 at 13:36:32 Sat Aug 3 2002)

Pages: [ 1 ]

[ Notify of replies made to this post ][ Print ][ Send To Friend ] [ Watch ] [ < ] [ Add Reply ] [ > ]

OldAuHead
02:38:23 Wed
Jan 14 2009

Offline
109 posts
Reply
Flour Gold

I worked for 3M back in the 70's and we made chip carriers for the elctronic industry. The ceramic chips had molydium(?) leads ,silk screened on them. The leads were the"fingers " that would direct electric impulses to create different functions of the chip.
which was in essence a circuit board.
The chips were cliped to a hangar in mulitables of maybe of 144 and placed in a vat of solution which was a light green color.Salt solution???don't know
A copper rod was in the tank which a DC charge was shot throught the rod and soulution, thus causing the gold to bond to the metal leads on the ceramic chip.
I talked to an old co-worker who should have known the entire process, but he was old and couldn't remember details. He tought the gold was dissolved in the solution and was charged in order to make it stick to the leads. I asked if the solution would desolve black sand and he had no answer.
BUT: could this process be used to take the flour gold and micro gold out of the black sand, stick it to a ceramic plate coated with molybdium(?) and then heated to melt the gold, thus retrieving your large "button".
Just a thought,,,any electrical engineers out there? I knew the chemist over the project , who has sense passed, and he had some mighty "bright" brass works & triggers on some Kentuckty Rifles in his collection. mm?
AuHead
[1 edits; Last edit by OldAuHead at 02:40:51 Wed Jan 14 2009]

  
ClickTheYellowChick
03:37:19 Wed
Jan 14 2009

Offline
124 posts

Reply
Re: Flour Gold

OldAuHead,

What a fascinating story. I LOVE that kind of anecdotal sharing and wish to thank you.

My initial response from my training is this: the optimal electrolyte for electrowinning gold on the "acid" side, is HCl As such, you will be dissolving a great deal of material in your effort to put into practice what you envision. Copious amounts of sludge will accumulate. Then the sludge will need fluxing and firing and another eProcess to individually harvest "this metal" then "that metal" and will not achieve the separation you state you are pursuing.

If Ag is encountered anywhere in the eWinning process, it will passivate the Au, and stop you cold. That is frustrating.

If you could create a dore' and use said poured dore' bar as your sacrifical anode, then the gold will plate onto your inert cathode in such an acidic cell.

As an old chipper from the '70s, it sounds like you have an experimental mindset still alive and kickin'. Construct a few experiments and get back to the board.

Personally, I wouldn't go the acidic route at all. It's not cost effective. The only ones I know of who use extra steps required in pursuit of gold electrowinning such as you are describing are the 4 and 5-9s minted products produced by the likes of the RCM in Toronto, et al. They are able to pass the costs onto their end customer.

Part of the excessive cost is due to the necessity at some point of stopping and precipitating ALL values from the electrolyte bath itself. It can and does become saturated with unwanted metallic ions which interfere with current amperage flow.

Hope this helps. Keep us posted.
[1 edits; Last edit by ClickTheYellowChick at 03:43:48 Wed Jan 14 2009]

  
allanwcoty
09:26:49 Wed
Jan 14 2009

Offline
431 posts

Reply
Re: Flour Gold

Have you had an assay done on your black sands? Putting unknowns into solution can release deadly gasses and make unknown combinations of toxic substances. Different things like sulfides could change the chemistry of your acid and actually make it dissolve your gold not to mention what would happen with arsenic ores. Do you have a University near you?, talk to the Proffessors for help. Have a great day and be safe. allan

  
ClickTheYellowChick
23:37:40 Wed
Jan 14 2009

Offline
124 posts

Reply
Re: Flour Gold

As a former owner of a hardrock miner in Umatilla Cty, I had to have "mine seepage" tested and certified for contents to make sure there was no arsenic etc., in the well water naturally produced by the mine. Whenever I hear a interested gold person speak of arsenic, I wonder if they've read the following, and what their response to it is:
Quote:

Common sources of arsenic exposure:

* Food: The average American adult takes in 50 milligrams of arsenic each day, with 80 percent of it coming from meat, fish and poultry. Some wines also contain noticeable levels of arsenic due to pesticides used in farming.

* Drinking water: Arsenic seeps into well water primarily via bedrock. Groundwater is sometimes contaminated by runoff from soil containing arsenic.

* Cigarette smoke: Arsenic-containing pesticides used in tobacco farming persist in small quantities in cigarette smoke.

Arsenic in cigarette smoke:
Inorganic arsenic is present in mainstream tobacco smoke and presumably in sidestream smoke as well. According to a report from the California Air Resources Board and the Department of Health Services, smokers breathe an estimated 0.8 to 2.4 micrograms of inorganic arsenic per pack of cigarettes, with approximately 40 percent of it being deposited in the respiratory tract.

While research has yet to define the specific risks associated with arsenic in cigarette smoke, it's safe to say that inhaling this toxic chemical compound is hazardous to human health.


The very mention of the word "arsenic" brings out the willies in most gold people, but not in others? Why?
[1 edits; Last edit by ClickTheYellowChick at 23:41:17 Wed Jan 14 2009]

  
azkid
02:59:49 Thu
Jan 15 2009

Offline
503 posts

Reply
Re: Flour Gold

I am not sure on the Electrowinning of gold but I do have a Year working for Cyprus Amax in Globe Arizona in the Tankhouse..

I worked in the electrowinning and electro refining it was seperated by some beams and had seperate overhead cranes for moving the electrodes and the cathodes..

I have cleaned the tanks out many times and the sludge from the bottom contained

gold, nickel,cadmium,lead,arsenic and a few other things.


I might be able to help with a diagram of a electrowinning or refining tank due to working many many hours checking, moving ,replacing and emptying them along with cleaning..

so if you might want to talk about it or have me sketch it (i suck at drawing) I might be able to whip something up..


  
Jim_Alaska
03:33:30 Thu
Jan 15 2009

Offline
4302 posts
Admin

Reply
Re: Flour Gold

Megan? You were "the owner of a hardrock miner"???

lol:devil:



---
Jim (Alaska)
Administrator
Jim Foley's Alaska
jfoley@sisqtel.net
 
 
OldAuHead
03:55:38 Thu
Jan 15 2009

Offline
109 posts
Reply
Re: Flour Gold

I'm still checking on how this was done. Talking to a few other guys from the 1970's isn't easy.Some have been on slow burn for many years
One says salt solution, another says acid, others don't know.
Going through Google there are several ways to dissolve gold,AND black sand.
I was told to take a magnet and remove the magnatite and go for it.:confused:
Needles to say 3M is no longer there @ this location.
Looks like a few of you, and maybe me could pool resources and set up a pl;ace close to the gold fields and make a go of it.
The tank we used was small, approx. 3' x 12', and it was behind a vaulted door about 15 feet from the main guard's desk.
Any possums up there, or do I have to bring my own meat?
Charlie

  
azkid
04:16:42 Thu
Jan 15 2009

Offline
503 posts

Reply
Re: Flour Gold


also
Quote:


Precious Metals Recovery
The pregnant eluate (1) is passed through a series of electrowinning cells (2), containing cathodes in the form of stainless steel plates. The gold and silver migrates and attaches itself to the stainless steel cathodes. The cathodes are then rinsed, yielding a muddy sludge, and the cathodes are reused.The muddy sludge is dried (3), and the powder that remains is mixed with fluxes (4) and put into the furnace (5). The furnace attains a temperature of 1200 degrees C and after several hours the molten material is poured into a cascade of moulds (6) to produce doré bullion bars. The fluxes form a slag of impurities which is removed, leaving a bar which is a 99% pure melt of gold and silver. Each bar of doré bullion contains around 90% silver and 10% gold, and weighs approximately 20 kg.







*edit*

check here it might help a little

http://www.ccvgoldmining.com/Operations/Recovery/recovery.html


maybe a safer method ...

http://www.rmcgold.com/ECL.htm


page 6 but might be too much to do in your own garage...

http://www.calgoncarbon.com/documents/GoldenSunlightonPlacerUS.pdf

i will keep looking and see if anything else might help you..

also a add from the ICMJ


Quote:


MINING EQUIPMENT
Complete Design Plans
From
POOR BOY DESIGNS
PO Box 7039
Redlands, CA 92375
Rocker Concentrator $20.00
Vibrating Concentrator $25.00
Mercury Supercharger $15.00
Amalgamator $20.00
Electronic Sluice $30.00
Gold & Silver Refinery $25.00
Concentrating Table $30.00
Ore Roaster $20.00
Chlorine Leach Vat (Silver) $20.00
Cyanide Leach Vat (Gold) $20.00
Gas Engine Impact Mill $49.00
Gas Engine Autogenous Mill $49.00
Super Sucker $15.00
Tube Concentrator $20.00
Mercury Retort $15.00
Mercury Air Press $15.00
Concentrate Feeder $15.00
Magnetic Separator $49.00
Belt Finishing Table $15.00
Rev. Spiral Concentrator $49.00
[3 edits; Last edit by azkid at 04:33:16 Thu Jan 15 2009]

  
allanwcoty
23:06:44 Wed
Jan 28 2009

Offline
431 posts

Reply
Re: Flour Gold

Just came across this,

Arsine was the main culprit as well as AsCl3, and Amine based Arsenicals.. Any time volatile heavy metal compounds are created, they become a severe health hazard. Even electronic scrap contains some Arsenic because it's used as a dopant in semiconductors and Gallium Arsenide is a major component of LED's. Precipitating PMs in solutions that contain Arsenicals with Zinc, Aluminum and other base metals can and probably will generate Arsine (AsNH3). 135 PPM of Arsine in Air can kill you straight off and it's a bad way to go. About a year ago, it sent me to the Emergency Room. My urine looked like Tomato Juice and I knew I had been poisoned. My suspicions were right. You cannot believe how sick you can get until you've been poisoned by Arsenic. It's very painful. It will make you wish you were dead.

  
ClickTheYellowChick
04:01:56 Thu
Jan 29 2009

Offline
124 posts

Reply
Re: Flour Gold

I'm confused, Alan, you said you just came across that. However, that is an account written in 1st person. Is this from your biography that hasn't been published yet?

How scarey for that laborer and that worker to have gone through that experience. Glad they survived!!!! Very glad, indeed. Wonder what else was going on at that time that there wouldn't have been safety precautions in place to deal with that particular workplace environment?

Any more details we can all learn from?


  
allanwcoty
19:51:33 Thu
Jan 29 2009

Offline
431 posts

Reply
Re: Flour Gold

No biography coming from me, I'm not a writer. Just wanted everyone to be careful what they were working and experimenting with. I was running a recirculation tub with some black sands that was getting mold in it so I figured I'd add a little Clorox to keep it from molding. A month later when I got back to it the water was purple and had a horrible sulfur smell. Asked a proffesor and he said that once the clorox was added that it likely released the sulfides and who knows what else. BE CAREFUL!

  
baub
15:15:38 Thu
Dec 24 2009

Offline
915 posts
Reply
Re: Flour Gold

Another replay worth reading.

b

  

Pages: [ 1 ]

[ Notify of replies made to this post ][ Print ][ Send To Friend ] [ Watch ] [ < ] [ Add Reply ] [ > ]

 Total Members: 11956

  • Can start a new thread. (Everyone)
  • Can't start a new poll. (Mods & Admins)
  • Can add a reply. (Everyone)
  • Can't edit your posts.(Everyone Registered)
  • Register :: Log In :: Administrators

    The time is now 08:18:16 Sun Dec 5 2021

    Powered By BbBoard V1.4.2
    © 2001-2007 BbBoy.net
    :: :: Flour Gold

    [Most Recent Quotes from www.kitco.com]

    [Most Recent Quotes from www.kitco.com]