Refining is the process of purification of a substance or material. It is often used as a term for transforming a natural resource that is just shy of being pure into a much more useful product.

The recovery of gold and other noble metals from electronic waste, in particular discarded mobile phones, has enormous potential, but is still underdeveloped. British and American scientists have now ...

A big part of the recycling of electronic equipment is the recovery of metals such as gold. Usually the printed circuit boards and other components are shredded, sorted, and then separated. But ...

You might be able to extract gold from a computer's CPU, but it's dangerous to do on your own because of the chemicals ...