How to refine gold scrap to 99.9%~99.99% gold (Different gold refining method)

How to refine gold scrap to 99.9%~99.99% gold (Different gold refining method)

How to refine gold scrap to 99.9%~99.99% gold. Below I have listed several commonly used gold refining methods. 1. Use fire directly to melt out other impurities except gold, then get the high purity 99.9% gold; Real gold is not afraid of fire. The simplest way to refine gold is to use fire to refine […]