Miller Chlorination process

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wellington_jr

New member
Joined
Apr 22, 2011
Messages
2
Hey Guys

I'm doing a research on gold refinning processes available in market. I have not found any figure, drawing, schem or flowchart of the miller chlorination process. As I know there is a lot of people who understand a lot about gold refinning here, is tere anyone who could send me a picture, a schem, a draw, anything?

Thanks a lot..
 
wellington_jr said:
Hey Guys

I'm doing a research on gold refinning processes available in market. I have not found any figure, drawing, schem or flowchart of the miller chlorination process. As I know there is a lot of people who understand a lot about gold refinning here, is tere anyone who could send me a picture, a schem, a draw, anything?

Thanks a lot..
Click to expand...
If your concern is strictly research, no big deal, but if you have designs on trying the process, I strongly recommend you abandon the idea.

In a nutshell, doré is melted and held at heat, all the while chlorine is introduced via an inert pipe, to the bottom of the vessel. Elements are oxidized in turn, leaving the vessel in the way of fumes. Even platinum can be eliminated. It is fast, and quite good, assuming one has the proper equipment and surroundings.

This process is well beyond the scope of home refining. It offers risk of death --- something that should not be taken lightly.

Harold
 
Harold_V said:
wellington_jr said:
Hey Guys

I'm doing a research on gold refinning processes available in market. I have not found any figure, drawing, schem or flowchart of the miller chlorination process. As I know there is a lot of people who understand a lot about gold refinning here, is tere anyone who could send me a picture, a schem, a draw, anything?

Thanks a lot..
Click to expand...
If your concern is strictly research, no big deal, but if you have designs on trying the process, I strongly recommend you abandon the idea.

In a nutshell, doré is melted and held at heat, all the while chlorine is introduced via an inert pipe, to the bottom of the vessel. Elements are oxidized in turn, leaving the vessel in the way of fumes. Even platinum can be eliminated. It is fast, and quite good, assuming one has the proper equipment and surroundings.

This process is well beyond the scope of home refining. It offers risk of death --- something that should not be taken lightly.

Harold
Click to expand...

I'm not going to build one, just a research i'm doing for my university. I have some information about the process, quite a lot actually, but what i don't have is a design of the furnace, the methods of injecting gases and colectig fumes...

thanks anyways..
 
wellington_jr said:
I'm not going to build one, just a research i'm doing for my university. I have some information about the process, quite a lot actually, but what i don't have is a design of the furnace, the methods of injecting gases and colectig fumes...

thanks anyways..
Click to expand...
If memory serves, there is a little information on the process in the Hoke book (which you can download from a link found in the sig line of many of the readers). Maybe even a picture or two. The reprint may or may not contain the picture---can't say with certainty.

I'm of the opinion that an elaborate setup isn't a requirement, aside from capturing the fumes and any escaped chlorine. A refractory tube inserted from the top of a crucible so it ends near the bottom would be adequate.

Harold
 
Harold,

Platinum won't be eliminated very well by the Miller Process for the same reason that the gold remains pure: its chloride is not stable and will not form at that temperature, much like Pd. Rh will form a volatile trichloride at the melting point of gold.

The Pt and Pd halides are only slightly harder to disproportionate back into the elements than gold.
 
Thanks for the info, Lou. I was trusting to memory of long ago. Seems like what I read stated that platinum evolved just before gold did. Makes sense that you'd want to stop before----which likely explains why the Miller process is generally followed by the Wohlwill process.

Harold
 
wellington_jr said:
Hey Guys

I'm doing a research on gold refinning processes available in market. I have not found any figure, drawing, schem or flowchart of the miller chlorination process. As I know there is a lot of people who understand a lot about gold refinning here, is tere anyone who could send me a picture, a schem, a draw, anything?

Thanks a lot..
Click to expand...

Hie Wellington. If you happened to find anything on the Miller process may you kindly share with me. I am very interested in the process. May you send on [email protected] or on watsapp number +263772379429.

Kind Regards!!
 
Wellington_jr has not logged onto the forum since June, 2011. I doubt he will see your post any time soon.
 
That would make for a very interesting read !!





Harold_V said:
wellington_jr said:
Hey Guys

I'm doing a research on gold refinning processes available in market. I have not found any figure, drawing, schem or flowchart of the miller chlorination process. As I know there is a lot of people who understand a lot about gold refinning here, is tere anyone who could send me a picture, a schem, a draw, anything?

Thanks a lot..
Click to expand...
If your concern is strictly research, no big deal, but if you have designs on trying the process, I strongly recommend you abandon the idea.

In a nutshell, doré is melted and held at heat, all the while chlorine is introduced via an inert pipe, to the bottom of the vessel. Elements are oxidized in turn, leaving the vessel in the way of fumes. Even platinum can be eliminated. It is fast, and quite good, assuming one has the proper equipment and surroundings.

This process is well beyond the scope of home refining. It offers risk of death --- something that should not be taken lightly.

Harold
Click to expand...
 

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