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gold extraction with aqua regia

Sep 24, 2017· This article is aboutaqua regiaprocess for gold dissolving andextracting. Aqua regiais a combination of HCL and HNO3. 3 parts of HCL and 1 part of HNO3 makeaqua regiaforgold dissolving.Let’s know aboutgold extractionfromaqua regia.There are many procedures for gold precipitation fromaqua regia.For example, we can use Sodium metabisulfite, oxalic acid, iron and some others. But I like …

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