dutch_gold
Member
- Joined
- Jan 16, 2012
- Messages
- 9
Hi,
I tried to recovery gold from 20 cpu for the first time but I failed when it came to precipitating the gold out of the AR solution.
But I do not know what I did wrong. I have taken the following steps
1. I separated the Gold Plated Pins from 20 CPU,s body using a torch.
2. Weighted the pins ( 16 grams).
3. Separated the gold and the base metals, by letting the pins gently boil for 3 hours in 100 ml 53% nitric acid (HNO3).
4.The gold foils where floating on the suffers now, so I filtered the solution by pouring of the nitric acid through a piece of cotton.
5. The cotton had collected the gold foils, so I let it dry for the night.
6. I collected the gold foils in a flask.
7. I made an AR solution by adding 10 ml of 53% HNO3 to 40 ml 30% HCL.
8. Then I added the AR solution to gold foils.
9. All the gold foils were dissolved in the AR solution leaving a yellow solution. ( I was planning on not to dissolve all of the gold, so that I did not have to you urea.)
10. I filtered the solution through a piece of cotton to take out any organic material.
11. I made a urea solution of urea fertilizer that contains 46% urea by dissolving it in 100 ml distilled water.
12. I poured 20 ml urea solution in the AR but there was no reaction but after a while there where small crystals in the AR. And he remaining urea solution there where big crystals.
13. I thought this was no good, so I filtered the AR solution through a piece of cotton to get the small crystals out.
14 Then i added Sodium Metabisulfite (SMB) but there was no reaction :?: :?:
I was hoping on a similar reaction as in this youtube video http://www.youtube.com/watch?v=KRfpNnu9W-U&feature=BFa&list=ULZPz_Evg_Kf8&lf=mfu_in_order
but there was none. Can somebody help my figure out what I did wrong. I would be grateful
Sorry for my pour english
I tried to recovery gold from 20 cpu for the first time but I failed when it came to precipitating the gold out of the AR solution.
But I do not know what I did wrong. I have taken the following steps
1. I separated the Gold Plated Pins from 20 CPU,s body using a torch.
2. Weighted the pins ( 16 grams).
3. Separated the gold and the base metals, by letting the pins gently boil for 3 hours in 100 ml 53% nitric acid (HNO3).
4.The gold foils where floating on the suffers now, so I filtered the solution by pouring of the nitric acid through a piece of cotton.
5. The cotton had collected the gold foils, so I let it dry for the night.
6. I collected the gold foils in a flask.
7. I made an AR solution by adding 10 ml of 53% HNO3 to 40 ml 30% HCL.
8. Then I added the AR solution to gold foils.
9. All the gold foils were dissolved in the AR solution leaving a yellow solution. ( I was planning on not to dissolve all of the gold, so that I did not have to you urea.)
10. I filtered the solution through a piece of cotton to take out any organic material.
11. I made a urea solution of urea fertilizer that contains 46% urea by dissolving it in 100 ml distilled water.
12. I poured 20 ml urea solution in the AR but there was no reaction but after a while there where small crystals in the AR. And he remaining urea solution there where big crystals.
13. I thought this was no good, so I filtered the AR solution through a piece of cotton to get the small crystals out.
14 Then i added Sodium Metabisulfite (SMB) but there was no reaction :?: :?:
I was hoping on a similar reaction as in this youtube video http://www.youtube.com/watch?v=KRfpNnu9W-U&feature=BFa&list=ULZPz_Evg_Kf8&lf=mfu_in_order
but there was none. Can somebody help my figure out what I did wrong. I would be grateful
Sorry for my pour english