Her is something to study:First of thank you for refering to the previous thread, I have used it as a reference before my third attempt.
1- Fire assay was used and samples from different locations from the alloy were taken.
2- The composition of the feed were gold of 760 purity ( a mixture of 700-800 purity alloys)
3- for the silver chloride sludge we used iron and H2SO4 to recover and the silver from the first two attempts contained around 3 grams, so i did not count them in my losses.
4- for the liquids we only added caustic soda nothing else. I saw suggestions of Tin, and others of just letting it sit for days. I'm not sure which method should I use. If I'm considering the aluminum is there a standard procedure or specific amount to be added?
Pay special attention to safety and dealing with waste.
We ask our new members to do 3 things.
1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction to the most important chemistry regarding refining.
It is free here on the forum: https://goldrefiningforum.com/phpBB3/viewtopic.php?f=54&t=19798
2. Then read the safety section of the forum: https://goldrefiningforum.com/forums/safety.47/
3. And then read about "Dealing with waste" in the forum: https://goldrefiningforum.com/threads/dealing-with-waste.10539/
Suggested reading:
https://goldrefiningforum.com/forums/the-library.101/
https://goldrefiningforum.com/threads/when-in-doubt-cement-it-out.30236/
https://goldrefiningforum.com/threa...le-read-this-before-you-post-about-ore.33333/
Forum rules is here.
https://goldrefiningforum.com/threads/gold-refining-forum-rules.31182/