Microscopic gold processing

[OroMontalban]

Hello. Currently we been testing dirt/sand/rocks by using AR as a qualitative test in different areas of a property we own in San Diego California local mountains. It took us some time to figure out that we are dealing with microscopic gold that will not stick to any sluice even after trying different mats, panning is out of the question because the microscopic gold in the dirt/sand a good portion of the gold travels with the clay and it's lost by panning. We experienced same results running concentrates on blue bowl and miller table we just lose it. Since we are finding that testing qualitative with AR is promising we would like to find our options to test larger samples like a ton per day or half a ton or even a couple thousand pounds will be satisfactory. Hope there's something out there that is reliable and validated to capture microscopic gold.
Thank you

 

[goldshark]

Floatation is probably the least toxic, bulk recovery system for that quantity.

 

[nickvc]

I guess as you are in California you can’t use chemicals that could easily liberate your gold you need green alternatives , with those I can’t help , they do not exist , as far as I know, good luck and let us know if you find alternatives , we could help others.

 

[OroMontalban]

I guess as you are in California you can’t use chemicals that could easily liberate your gold you need green alternatives , with those I can’t help , they do not exist , as far as I know, good luck and let us know if you find alternatives , we could help others.

Yes I live in the country named California but don't conform to rules and regulations unless they can not be contain or properly dispose so eny suggestion is welcome

 

[SRM]

There is always a way, but it may not be economic. I think you have a fair amount of work ahead of you.

There has been a fair amount of work using glycine as a lixiviant. If it would work for you, it may be more palatable to the environmental authorities.

You will need to address the clay issue before many of the options become economic.

As a test, I would rent a gas-powered cement mixer and use it to mix and roll a test sample with some steel balls. I would run 4 tests (15 min, 30 min, 45 min and 60 min) using the same sample weight and same amount of water in each. Run the agitated sample across a table and assay both the tails and cons (#1&2 cons can be combined) to see if agitation and rolling allows the gold to separate. If anything shows promise, I would look at using flocculant, varying the water, optimizing the roll time etc.

In the words of Dennis Miller "Just my opinion, I could be wrong"

 

[OroMontalban]

There is always a way, but it may not be economic. I think you have a fair amount of work ahead of you.

There has been a fair amount of work using glycine as a lixiviant. If it would work for you, it may be more palatable to the environmental authorities.

You will need to address the clay issue before many of the options become economic.

As a test, I would rent a gas-powered cement mixer and use it to mix and roll a test sample with some steel balls. I would run 4 tests (15 min, 30 min, 45 min and 60 min) using the same sample weight and same amount of water in each. Run the agitated sample across a table and assay both the tails and cons (#1&2 cons can be combined) to see if agitation and rolling allows the gold to separate. If anything shows promise, I would look at using flocculant, varying the water, optimizing the roll time etc.

In the words of Dennis Miller "Just my opinion, I could be wrong"

Thank you for your comment definitely worth trying since I already own a cement mixer.
Best regards

 

[nickvc]

Well you got some help so please keep us informed at to your progress or lack thereof .

 

[minero74]

Glycine is a good method for leaching microscopic gold
I bought Glycine powder at amazon and in Vitamin shoppe store

 

[OroMontalban]

Glycine is a good method for leaching microscopic gold
I bought Glycine powder at amazon and in Vitamin shoppe store

Good to know will research a method and if favorable for testing larger quantities of sample will definitely will use
Thank you

 

[minero74]

Good to know will research a method and if favorable for testing larger quantities of sample will definitely will use
Thank you

You will need to pulverize the ore to very fine powder
I do it at 200 mesh ,the finest You crushed Your Ore the better
with potassium permanganate.

it work perfectly .

 

[Taleeho]

Good to know will research a method and if favorable for testing larger quantities of sample will definitely will use
Thank you

Good to know will research a method and if favorable for testing larger quantities of sample will definitely will use
Thank you

I have been learning about glycine, and according to some professors(Oraby and Eksteen) at Curtin University in Australia, it's the best thing since canned beer. I'm interested in trying glycine at pH 10 as a substitute for acid in AP process for treating waste PCB fingers.

 

[Yggdrasil]

I have been learning about glycine, and according to some professors(Oraby and Eksteen) at Curtin University in Australia, it's the best thing since canned beer. I'm interested in trying glycine at pH 10 as a substitute for acid in AP process for treating waste PCB fingers.

The AP dissolves the base metals to free the Gold.
The Glycine leach, dissolves the Gold.
I guess one can say they are two different animals.
If Glycine is suited for PCBs I do not know.

 

[Yggdrasil]

I have been learning about glycine, and according to some professors(Oraby and Eksteen) at Curtin University in Australia, it's the best thing since canned beer. I'm interested in trying glycine at pH 10 as a substitute for acid in AP process for treating waste PCB fingers.

Did you find anything regarding how selective it is?

 

[OroMontalban]

You will need to pulverize the ore to very fine powder
I do it at 200 mesh ,the finest You crushed Your Ore the better
with potassium permanganate.

it work perfectly .

What is the Potassium Permanganate going to do?
Thank you

 

[minero74]

What is the Potassium Permanganate going to do?
Thank you

Potassium Permanganate is use as Oxidant
in this leaching method.

Potassium permanganate and glycine are used together in a leaching process to extract gold from ores. This process is more environmentally friendly than traditional cyanide-based methods

i found this one in google.
At the optimum condition of 4 g/l glycine, 2 g/l potassium permanganate, and room temperature, 96.17% of the gold was selectively extracted.

The leaching solution need to be continuously agitated.

I can’t post the method I know
and is very close to that one.

You can test and find a better way for your Ore.

 

[OroMontalban]

Potassium Permanganate is use as Oxidant
in this leaching method.

Potassium permanganate and glycine are used together in a leaching process to extract gold from ores. This process is more environmentally friendly than traditional cyanide-based methods

i found this one in google.
At the optimum condition of 4 g/l glycine, 2 g/l potassium permanganate, and room temperature, 96.17% of the gold was selectively extracted.

The leaching solution need to be continuously agitated.

I can’t post the method I know
and is very close to that one.

You can test and find a better way for your Ore.

Awesome Thank you so much for the information and will research it. I definitely need a method to extract the microscopic gold from sand and soil samples. I'm OK to use AR as a qualitative method of fire method for our small samples but need to do some development to an environmental process to test large samples.
Best regards

 

[minero74]

Awesome Thank you so much for the information and will research it. I definitely need a method to extract the microscopic gold from sand and soil samples. I'm OK to use AR as a qualitative method of fire method for our small samples but need to do some development to an environmental process to test large samples.
Best regards

Excellent

if you planing on working with black sand
You can roast it first and when get cool down
trying to pulverize it so it can release the gold if it have any inside the black sand grains.

I found out some black sand grain ,it have gold inside.

 

[OroMontalban]

Excellent

if you planing on working with black sand
You can roast it first and when get cool down
trying to pulverize it so it can release the gold if it have any inside the black sand grains.

I found out some black sand grain ,it have gold inside.

Hello
I tested non crushed sand and crushed sand and I did get a higher recovery in the crushed sand but with out roasting, I will definitely will roast next time that is a great point. Thank you so much
Best regards