I used 300g of sample (Gold grade: 27ppm) and 700cc tap water to perform the cyanidation process.
The process took 3 hours and I filtered the solution to separate liquid and sample powders.
I then put 15g of activated carbon into the filtered solution and stirred the mixture for about 90 minutes.
The carbon cubes were then taken out and put into a little furnace and burnt to ashes (around 0.3g).
I found the carbon had around 40% Cu and 0.3% Au with little amount of base metals like Fe, Pb, Zn, etc..
My goal is to repeat this process until I get enough Au and then I make a gold alloy.
My question is, how do I recover Au from the burnt ashes of activated carbon?
I tried my furnace and the temperature was almost about 1200 degree Celsius.
I did find a little bead at the bottom of the furnace cup but I couldn't remove it.
Then I added Cu2O with carbon powders into the furnace cup again hoping that it would make enough volume for the alloy mixture to flow out. But I messed up by putting too much Cu2O powders and now the outcome alloy looks like a mess and the X-ray spectrum only shows very very little reading of Au.
I'm wondering if there's better way to recover gold from the burnt ashes?
I looked up the Internet and it seems like I'm dealing with AuCN- but I have no idea what should I do next.
The process took 3 hours and I filtered the solution to separate liquid and sample powders.
I then put 15g of activated carbon into the filtered solution and stirred the mixture for about 90 minutes.
The carbon cubes were then taken out and put into a little furnace and burnt to ashes (around 0.3g).
I found the carbon had around 40% Cu and 0.3% Au with little amount of base metals like Fe, Pb, Zn, etc..
My goal is to repeat this process until I get enough Au and then I make a gold alloy.
My question is, how do I recover Au from the burnt ashes of activated carbon?
I tried my furnace and the temperature was almost about 1200 degree Celsius.
I did find a little bead at the bottom of the furnace cup but I couldn't remove it.
Then I added Cu2O with carbon powders into the furnace cup again hoping that it would make enough volume for the alloy mixture to flow out. But I messed up by putting too much Cu2O powders and now the outcome alloy looks like a mess and the X-ray spectrum only shows very very little reading of Au.
I'm wondering if there's better way to recover gold from the burnt ashes?
I looked up the Internet and it seems like I'm dealing with AuCN- but I have no idea what should I do next.