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Re: Dore Production from Process Concentrate

Re: Dore Production from Process Concentrate

­The final stage of production -- refining-- involves removing impurities that remain after the smelting .Refining companies receive doré bars, as well as scrap , and reliquefy the metal in a furnace. Workers add borax and soda ash to the molten metal, which separates the pure from other precious and less precious metals. A sample is then taken to a lab for tests, or

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