Zhengzhou high tech Zone, China[email protected] 7*24 For you
173the final stage of gold production -- refining-- involves removing impurities that remain after the smelting process.refining companies receive dor233 bars as well as scrap gold and reliquefy the metal in a furnace. workers add borax and soda ash to the molten metal which separates the pure gold from other precious and less precious metals. a sample is then taken to a lab for tests or.
If you want to learn about our products , please call or write mail consultation.