Hello friends
i used many lcd screen scrap . i cut from the fingers and didnt use the circuit elements. i just used fingers.
i put them AR and boiled up. (850 mg HCL and 250 mg Nitric Acid ) 1 hour later my scrap totaly clean. Everting disolved over it then i filtered it. İt was very dark green solution.
After filtering my solution had became 1600 mg with water. Then I boiled it on low heat 5 hour until my solution become 1000 mg . i added some URE for see to reaction of nitric acid and i saw reaction. i added one food spoon ure to the solution and go on to add until stay no reaction. totaly i added 2 spoon ure. After being sure no nitric in the solution , i added dry SMB maybe 10 spoon. it was always giving brown reaction when i added smb. İ had tought that brown was gold . After 10 spoon smb i cut the give.( but if i gave more smb it would be more reaction, i m sure about that. juts i tought that even 10 spoon much.)
After added smb my solution become dark browm. i thought that gold will down a few hours later . But 2 hour later there was many cyrstals.
Just i wanna ask
1- are gold inside of cyrstal or stil inside of solution?
2-if inside of solution. how can i precipita it.
tnx for your helping
i used many lcd screen scrap . i cut from the fingers and didnt use the circuit elements. i just used fingers.
i put them AR and boiled up. (850 mg HCL and 250 mg Nitric Acid ) 1 hour later my scrap totaly clean. Everting disolved over it then i filtered it. İt was very dark green solution.
After filtering my solution had became 1600 mg with water. Then I boiled it on low heat 5 hour until my solution become 1000 mg . i added some URE for see to reaction of nitric acid and i saw reaction. i added one food spoon ure to the solution and go on to add until stay no reaction. totaly i added 2 spoon ure. After being sure no nitric in the solution , i added dry SMB maybe 10 spoon. it was always giving brown reaction when i added smb. İ had tought that brown was gold . After 10 spoon smb i cut the give.( but if i gave more smb it would be more reaction, i m sure about that. juts i tought that even 10 spoon much.)
After added smb my solution become dark browm. i thought that gold will down a few hours later . But 2 hour later there was many cyrstals.
Just i wanna ask
1- are gold inside of cyrstal or stil inside of solution?
2-if inside of solution. how can i precipita it.
tnx for your helping