Nice compilation of photos and video’s. Can you speak a little about the time spent actively processing for each step and the volumes of chemistry you used? I think it will be helpful for some members to be able to relate to time spent and yields possible.
Again, nice job and thank you for putting it together.
Hi!
I enjoy writing about it, even I am learning the process, I learn something new every time. Of course I learned a lot on this forum, thanks everyone!
As you can see in the pictures, the gross weight is 258 grams, I cut everything possible into pieces to make it easier for the acid.
It's tedious work when there are many pieces, but it's worth it in the end.
In this case too, I poured it with nitric acid, unfortunately I only have 54% of it, then as the reaction subsides, I pour a little water over it and it gets nitric acid again. From time to time I change the fluid on it, wash it with water and start over.
About 7-8 dl of acid may have been consumed, which may be a bit much, but I'm still learning, then I wash the gold foils and pour them with hydrochloric acid, then I add the nitric acid very little by little.
When it has dissolved, I add urea, little by little, until it reacts with the solution, and then I dissolve SMB in water and add it to the solution.
I boil the finished golden mud several times in distilled water, then dry it and melt it.
The first process with the acid was about 2.5 hours, I'm using a translation program, sorry if there are mistakes!
This is how I melt the gold:
CFH SF 3100
