Nitric Acid - cold temps

[ólom]

So what you say is that Ferric Chloride is faster than Cupric Chloride?

Yes

 

[ólom]

Szóval azt mondod, hogy a vas-klorid gyorsabb, mint a réz-klorid?

https://goldrefiningforum.com/threads/ferric-chloride-recovering.1474/

 

[Martijn]

So what you say is that Ferric Chloride is faster than Cupric Chloride?

From what i can find the copper etching rate of Ferric Chloride is 212nm/s @40C and Cupric Chloride is 465nm/s. (1.1mils/min)

Temperature increases the the rate.

And FeCl2 can be regenerated with HCl and oxygen. Not sure how fast that works.

 

[Yggdrasil]

From what i can find the copper etching rate of Ferric Chloride is 212nm/s @40C and Cupric Chloride is 465nm/s. (1.1mils/min)

Temperature increases the the rate.

And FeCl2 can be regenerated with HCl and oxygen. Not sure how fast that works.

Then you would need Iron, right?
Or will the amount available as Chloride suffice?

 

[Martijn]

So what you say is that Ferric Chloride is faster than Cupric Chloride?

Yes

From what i can find the copper etching rate of Ferric Chloride is 212nm/s @40C and Cupric Chloride is 465nm/s. (1.1mils/min)

Temperature increases the the rate.

And FeCl2 can be regenerated with HCl and oxygen. Not sure how fast that works.

Then you would need Iron, right?
Or will the amount available as Chloride suffice?

I responded to these posts; From what i've found, I seems Copper chloride is faster, but Olom thinks otherwise.
Regeneration by oxygen and HCl additions is comparable from what I can find in studies.
The HCL+ air/O2 way is said to be the cheapest way to regenerate.