i've seen how to refining gold video through youtube over and over and i thight i would give it try. so i had collecter 4 motherboard and 12 cell phones to start the project. at first, i started 2 motherboards and 6 cell phone boads as i seen in the video. i had made aqua regia by 1:3 ratio of mixture which 1 part nitrate acid and 3 parts hydrochoric acid and let all the gold dissolved in the solution. after 30 minutes or so, there were no more reactions in the solution and i've filtered solution, but unlike in the videos, my solution turn out dark green. i didn't think too much of it and added smb ( sodium metabisulfite ). first soultion were bubbling up like sugar in the soda but no color changes of solution. so i added and added smb to see any changes and ended up adding a lot like over 100g. after a while i seen powers sink in bottem and thought thats the gold, but color of powers were gray at first then when it was dried it turn green. secon try yesterday, same as before solution turn out deep dark green and this time i added small amount of smb and let it set for 12 hours, seen powers in the bottem so collected and washed with distilled water for 5 times. at first powers were gray and around 3rd time of washing powers color changed to dark golden color. i thought that was it and i wasn't sure how that happened since i hadn't done much different as first time. i was so happy for while that was until i added hydrochoric acid to make sure color of power would stay same. when i added hydrochoric acid to powers, it turn almost black and some powers dissolved and what didn't, turn back to gray. it's been just about 5 days i had started this and i am not sure where my gold is and what am i doing wrong. so far, i ended up with 5 gallons of mixed solution and none gold powers. could someone help me recover gold from it and what am i doing wrong..
Thank you guys!
ok make things clear
this is what i had done.
1. mixed aqua regia by 1 part nitate acid and 3 parts of hydrochloric acid 32%.
2. i heated solution med. heat and waited until all gold was dissolved.
3. put the coffee pot into ice bath and cooled solution until it became cold.
4. added 2 spoons of smb waited 12 hours at frist.
4. collected gray powers from solution not adding anyting to solution.
5. added more smb to remaining solution.
6. got more gray powers and washed off with distilled water for 5 times and it turn to golden color.
7. from golden color, it turning back to green.
but when i tested solution, it still has gold. i made stannous chloride by usind 60/40 solder lead and 32% hydrochloric acid.
i really like to learn how to do gold refining it ream means lot to me to learn. i went around 2 weeks just get everything from hydrochloric acid to nitrate acide and smb. here in philippines, it's not easy to find everything like i was in U.S. to find stump out, forget it. they have round up and when i call 15 companies, none had heard of stump out and to get hydrochloric acid, you can only get 4 liters a month. i really do miss states...
guys pls help me.
waiting for anyone to reply....
Thank you guys!
ok make things clear
this is what i had done.
1. mixed aqua regia by 1 part nitate acid and 3 parts of hydrochloric acid 32%.
2. i heated solution med. heat and waited until all gold was dissolved.
3. put the coffee pot into ice bath and cooled solution until it became cold.
4. added 2 spoons of smb waited 12 hours at frist.
4. collected gray powers from solution not adding anyting to solution.
5. added more smb to remaining solution.
6. got more gray powers and washed off with distilled water for 5 times and it turn to golden color.
7. from golden color, it turning back to green.
but when i tested solution, it still has gold. i made stannous chloride by usind 60/40 solder lead and 32% hydrochloric acid.
i really like to learn how to do gold refining it ream means lot to me to learn. i went around 2 weeks just get everything from hydrochloric acid to nitrate acide and smb. here in philippines, it's not easy to find everything like i was in U.S. to find stump out, forget it. they have round up and when i call 15 companies, none had heard of stump out and to get hydrochloric acid, you can only get 4 liters a month. i really do miss states...
guys pls help me.
waiting for anyone to reply....