Gold and Platinum Refining amp; Recovery Systems /
Gold Refining with Saltwater: 1 hour per ounce of scrap: jewelry, gold bars or ingots: very mildly corrosive (saltwater) simple: about 600 to set up. About 12 per ounce to operate: silver content above 6% can slow the process: Platinum Refining with Nitricacidbased Aqua Regia: varies: catalytic converters, escrap, jewelry: very, very