Refining: The BIG aqua regia GOLD Drop

Refining gold.
Scrap jewelry gold is first dissolved in Aqua Regia. The liquid is filtered removing the silver. Video shows: Gold precipitate from the acid solution using sodium nitrite. Laser pionting out the progress. Dried pure gold in a crucible.
MUSIC: Johann Pachelbel -Canon in D Major

Category:

Science & Technology

Tags:

• cash
• for
• gold
• scrap
• jewelry
• refine
• refining
• aqua
• regia
• acid
• precipitate
• recovery
• metal
• dissolve
• lab
• laboratory
• .999
• Johann
• Pachelbel's
• Canon
• Major

[ktosi11]

1:30 so this is gold ?

[thaibu]

Yes, gold dropping from a solution then the final product.

[dionysus2008]

did u really use sodium nitrate to precipitate the gold ? if so could i use potassium nitrate instead ?

[thaibu]

@dionysus2008 Haven't tried Na or K NO3, but the nitrite is different (it has one less oxygen on the nitrate constituent)

[piccolopeteisme]

You gonna eat that?  Cause, if not....

[michaelfettable]

OK... so I have scrap gold/copper and 48% is Iridium... how do I safely separate these metals?

[Dkiller357]

Missed e on the word one! Am I bad?

[Dkiller357]

I read all of the comments posted on this subject,,and the on thing that really bugs me,,is that the people who comment on videos have no concept of the english language! I dont know if they are unschooled or just lazy?

[NedBurchfiel]

The precipitate looks oddly like cocoa powder. What an expensive mistake that would be!

[thaibu]

@tanuku79 I don't boil down, There are other methods. Remember this is video is getting the gold OUT of the aqua-regia... most UTube videos show gold going IN the aqua-regia.