Jump to content
oro

Activated Carbon

Recommended Posts

I need some advice - I am going to batch leach some milled ore samples and plan on using AC to capture the values.  Instead of stripping the AC I was wondering if it can be smelted, maybe with a bit of litharge as a collector and some borax to slag off contaminants.  I understand the carbon can be “ashed” in an electric muffle furnace at 650 celsius for 6-8 hours (I don’t have a muffle furnace) and thinking a gas furnace or torch (which I do have) might create too much wind and either volatilize the microscopic gold particles and/or blow the particles and ash out of the pan - hence the smelting question.  I’m talking about a handful of AC per batch.       

Share this post


Link to post
Share on other sites

Yes, the ash can be treated with Litharge and the contained gold captured like in a fire assay. A process of cupellation will then free the gold from the lead. As you say that requires incineration and you definitely dont want something like a torch which will then blow away all the gold bearing ash, leaving you with nothing.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×