Non-Chemical 81% gold in aqua regia

[vincicp]

hello can someone know if i can use aqua regia in 0.81% of gold purity direct to aqua regia solution
for refining process
best regards.

 

[FrugalRefiner]

Is it 81% gold or .81% gold?

Perhaps more importantly, what's the silver content? If it's 8 to 10% or greater, it will bring the AR to a halt.

Dave

 

[Claudie]

Nice scale

 

[rickbb]

All depends on the source material, what else is in it besides the gold?

 

[nickvc]

If it is 81% gold it should go ok in AR maybe not the cleanest dissolution but it should dissolve.
If it 0.81% no chance for AR you need to discover the base metal contaminants before anything else.

 

[4metals]

If it is 80+ percent gold it may have silver too high for effective attack with aqua regia. To be on the safe side, inquart with silver and part in nitric, then aqua regia on the remaining gold should be very easy and yield high purity gold.