How to Refine Gold: 2 Major Techniques of Gold .
Wash, dry, and granulate the gold powder. V. The final result will be your pure gold grain. Since the purpose of the procedure above is to separate a pure gold from other metals, the same process can be used to obtain other noble metal such as silver and palladium. Here is the list of some of the equipment required to successfully carry out an Aqua Regia goldrefining process: Granulating ...