whats wrong ?

[tamerakshar]

I succeeded in precipitating gold from my first batch of fingers in HCL-CL method, i tested the solution with stannous chloride and the gold was fully precipitated.
The second batch was 1.5 pound of pentium cpu's
no top lids
removed the bottom cover
dissolved in 1.5 liter of poor man's AR
i let them for 4 hours
filtered the solution, tested with S/C and the test result was by the book
tried to denox with fine grade urea powder no fizzing just a white reaction coming from the bottom to the surface, i continued until no reaction at all
by the way after filtering the solution was nice dark yellowish
i tried to precipitate the gold with SMB but, with no luck
i boiled the solution no brown fumes i decided to add urea but from a fertilizer grade it fizzes and a yellow foam occurs i added more urea until the reaction fades. Now i'm waiting to get to room temp to try to precipitate again.
can someone help
thx in advance

 

[Noxx]

Neutralization was not complete I think.

 

[tamerakshar]

Noxx,
i boiled twice adding more urea and the solution still hungry for urea the reaction seems to continue and fizzes all the time and foams
tested with S/C it gives a bale blue
do u think there is so much copper while the first test gave a nice test result?
thx for co-op.