How do you extract gold from a processor?
place processor in mercury let set for aprox. 4 hours then remove. place processor in mercury let set for aprox. 4 hours then remove.
Gold is formed independently from rocks so unlike iron or copper there is no 'ore' to extract it from. In general gold is acquired by finding nuggets in rocks. The gold is simply chipped off from the rock. It is extremly difficult if not impossible to extract the small traces of gold that can be found in many rocks and as far as i am aware no commercial technique for acccquiring such gold.
Are gold jewelry buyers buying the jewelry or are they looking to melt it down and extract the gold content?
Both. The gold jewelry has intrinsic value depending on the gold content, and they can possibly sell it for more if the price of gold increases. They also melt the gold down to extract the gold content, especially if they have a large quantity of lower-quality gold jewelry they want to get value from.
At one time, mercury WAS used to extract gold from gold ore. The rock was crushed, and washed over a copper sheet coated with mercury. Gold forms an amalgam with mercury, and some of the gold would be trapped in the mercury. The mercury would be scraped from the copper, and distilled, leaving behind the gold. Other processes are used today.