Proplem in filtering process

Gold Refining Forum

Help Support Gold Refining Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Nazeeh.abdelhadi

New member
Joined
Nov 20, 2018
Messages
2
Hello All,

When the aqua regia contains a caustic soda the filtering process becomes difficult and very slow, is there any thing that can be added to the solution so that it becomes easier and faster.

Thx
Nazeeh
 
its become in the AR when i refine the sink filters as i use usually soda costic in my work. This problem happends with me only when i refine this filters only.

Beat regards,
Nazeeh
 
As Dave alluded to - there should be no Caustic in your AR.

Re-acidify it with more HCl because if you don't it precipitates hydroxides which causes all kinds of issues.

So there's your solution to the problem. With the addition of HCl the precipitates go away.
 
Back
Top