Hey all. Looking to get into metallurgy. Specifically I want to melt down old jewelry and refine it into gold, silver, or copper bars. Melting stuff down looks easy enough, though my concerns lie with personal protective equipment, and safety hazards that arise from using aqua regia, as well as not understanding how to extract the gold, silver, etc from aqua regia.
Hence this thread. Any metallurgists able to help me with these issues?