Hello every one, i decided to recover gold from old T.V ic's i collected one kg of those ic's and trimmed their pins then burned them, crushed them and separated the hard stuffs from the powdered stuffs using a sieve
After that i used my strong magnet on the powder and removed the magnetic stuffs inside them and did the same on the hard stuffs so now i have 3 categories
1-non magnetic powder
2-non magnetic hard wires
3-magnetic powder and hard wires
i worked on the non magnetic powder first
i directly boured them in AR and filtered the solution and got nice green colored solution after that i tested with stannous chloride and got a positive purple color then i eliminated the nitric acid using sulfamic and tried precipitating using iron sulfate and nothing happened, i thought that my iron sulfate maybe became outdated so i used SMB to precipitate the gold, after adding SMB directly a white milky cloud formed, i stirred the solution and that cloud settled down in few minutes
am really wondering what was that white cloud ?
i excluded the silver because it should appear earlier not after adding SMB so is it tin?
i also excluded tin and lead because i trimmed the pins of the ic's, i cant find any explanation my friends
After that i used my strong magnet on the powder and removed the magnetic stuffs inside them and did the same on the hard stuffs so now i have 3 categories
1-non magnetic powder
2-non magnetic hard wires
3-magnetic powder and hard wires
i worked on the non magnetic powder first
i directly boured them in AR and filtered the solution and got nice green colored solution after that i tested with stannous chloride and got a positive purple color then i eliminated the nitric acid using sulfamic and tried precipitating using iron sulfate and nothing happened, i thought that my iron sulfate maybe became outdated so i used SMB to precipitate the gold, after adding SMB directly a white milky cloud formed, i stirred the solution and that cloud settled down in few minutes
am really wondering what was that white cloud ?
i excluded the silver because it should appear earlier not after adding SMB so is it tin?
i also excluded tin and lead because i trimmed the pins of the ic's, i cant find any explanation my friends