Methods of Purifying Gold – Cash for gold TorontoTo eliminate these impurities, gold should undergo the purification process. . These methods, however, vary in terms of complexity of the process, level of purification, and the costs involved. . Two common types of acid used for refining gold are hydrochloric acid and . I would like to learn how to refine gold from gold dust.cost gold refinery to process gold dust,How to Sell Gold Dust | eHowIf you want to sell gold dust, the easiest way to do so is to find a company that can assay . spot price of gold because the buyer must allow for the costs of refining the gold dust. . How to Extract Gold From Ore With Caustic Soda & Mercury.
cost gold refinery to process gold dust