Miller chlorination fume scrubbing

[Harold_V]

Anyone refining karat scrap receives about 7% silver as a byproduct of their gold refining for free. It is infinitely recyclable and you continue to accumulate it as your operation grows.

Why pay anything for zinc, and then have to pay again to dispose of it as waste? Not to mention the other disadvantages of zinc outlined above.

Exactly.
And, as he said, "End of discussion." The idea stinks, at best.

Do not encourage people to use zinc. We don't need to read about readers being hospitalized.

Harold

 

[HAuCl4]

Good thing the idea wasn't mine, but C.M. Hoke's who probably took it from someone else. Take up your issues with zinc with her ghost!. :lol:

As a safety warning: be careful with zinc fumes, do not inhale them. Do not drink or pour nitric acid on your skin either. It's dangerous!.

$40,000 vs $64 in capital to start a relatively large refinery... no contest!.

 

[elfixx]

May I post a reminder? This topic about miller chlorination and it's fume treatment.... If I was thinking about continuing wet chemical refining and switching to zinc inquartation instead of silver the topic would have been properly named / Zinc Inquartation. For now what I'm interested in is setting up a efficient chlorine fume scrubber at low cost.

Just to be clear: I'm not thinking, not even a second about switching to zinc inquartation, not at the moment nor in the futur.
And considering the danger involved compared to the simplicity of using silver to inquart I would not suggest anyone to use this technique.

 

[HAuCl4]

And considering the danger involved compared to the simplicity of using silver to inquart I would not suggest anyone to use this technique.

Do you plan to skim the melt in your Miller implementation or not skim the melt and break the crucible after it cools?. If you use a disposable crucible then the fumes are much less. Still a lot more than using silver inquartation...or shall I mention...zinc?. :lol:

The only metal I love more than zinc to process precious metals is lead. Those two metals, zinc and lead, have magical properties, and are extremely useful, in the proper hands. :shock:

 

[elfixx]

For my purpose I plan on leaving the melt in the crucicle, let it cool then break the crucible appart.

 

[Oz]

You are more than welcome to have an opinion that differs from others here. What disturbs me about your reply is its childish taunting tone targeting Harold of all people.

Good thing the idea wasn't mine, but C.M. Hoke's who probably took it from someone else. Take up your issues with zinc with her ghost!. :lol:

Why would you make a statement like that and post a “laughing" emicon after it? The idea may not be original to you, but you are the one that brought it up and recommended it. For the record I do not own a copy of Hoke but did read it online several years ago. If I remember correctly she also incinerated with gasoline, poured waste acids down the drain on occasion that would land you in jail today, and even talked about removing mercury from small batches of amalgam using a potato half over it in a very hot iron skillet. Do not even begin to promote those procedures here!

Hoke was written nearly a hundred years ago and needs to be read in that light. It is however one of the best books to this day that comprehensibly teaches refining to the layman, especially because of her promotion of acquaintance experiments. Yes, you knew that Harold is very fond of Hoke. He has good reason to be as that book shared with him what others would not. It allowed him to start a very successful refining business and retire young.

As I said, you are welcome to your opinion, but if you choose to taunt others you will likely have a vacation. Persist, and it is you that will become the ghost here.

Elfixx, please accept my apologies for this distraction from your questions on chlorine gas scrubbing.

 

[HAuCl4]

Wow, a bit "touchy" to say the least. aren't we Oz?. :lol: :lol:

elfixx: 4metals is the resident expert in Miller process with disposable crucibles. I suggest you PM him, if your interest is for real. If you posted a photo of your induction rig and furnace, that would probably help things, as the scrubber, etc has to be custom fitted to the induction furnace for best results. It is all pretty simple.

Good bye all!. If anyone has any tips on gold inquartation with sodium or magnesium, please PM me, I'm having trouble getting it right!. :lol: 8) :idea: :lol: :shock:

 

[elfixx]

I will post pic of it as soon as I receive it, I've ordered a 9KW medium to high frequency( 1-100KHz) power supply 5Kg gold/silver capacity, I'll build a crucible chamber out of castable refractory to protect the coil and add some safety to the setup. Do you think I should cast the coil directly into the refratory material or just slide it into the cement box and use some furnace lining to cover the copper coil? I am also planning to build my own scrubber, if I'm using a 450cfm fan sucking trought 6feet of scrubbing media do you think the air flow will be considerably reduced to the point where I should think of using a bigger fan?

 

[Harold_V]

I will post pic of it as soon as I receive it, I've ordered a 9KW medium to high frequency( 1-100KHz) power supply 5Kg gold/silver capacity, I'll build a crucible chamber out of castable refractory to protect the coil and add some safety to the setup. Do you think I should cast the coil directly into the refratory material or just slide it into the cement box and use some furnace lining to cover the copper coil?

The builder of the induction furnace should be able to provide acceptable guidelines.
Coils are often set in refractory, but you must be able to clean the old refractory for coil maintenance. I'd highly recommend you do some research so you follow acceptable procedures.

I'd enjoy seeing a picture or two of your furnace when it arrives. I have a keen interest in induction heating.

Harold

 

[elfixx]

I will

 

[elfixx]

I have another question related to the scrubber construction, if the media chamber is about 2,5 feet large by 4 feet tall what kind of pump would I need? If I'm placing 5 spraying nozzle how many gallon per minute and how much psi would be required?
And by the way does anyone know some place where I could buy such a pump and spraying nozzle?

Thank You

 

[Fournines]

I'm not an expert on induction melters, but all of ours have water cooling systems. This keeps the coil itself from melting down.

Just something to think about.

 

[HAuCl4]

I'm not an expert on induction melters, but all of ours have water cooling systems. This keeps the coil itself from melting down.

Just something to think about.

Where's MY platinum video????. :lol: 8)

 

[elfixx]

I was not asking for the water cooler pump but the caustic solution pump for the fume scrubber.

 

[Fournines]

I'm not an expert on induction melters, but all of ours have water cooling systems. This keeps the coil itself from melting down.

Just something to think about.

Where's MY platinum video????. :lol: 8)

Working on it! I'm bringing in a better camera. Shot the last one with my iPhone 8)

 

[Fournines]

I was not asking for the water cooler pump but the caustic solution pump for the fume scrubber.

I know. I was asking about your induction melter - (that you are apparently building yourself?) Depending on how powerful it is, the coil might need to have an additional water cooling system so it doesn't melt itself down.

 

[Harold_V]

I was not asking for the water cooler pump but the caustic solution pump for the fume scrubber.

I know. I was asking about your induction melter - (that you are apparently building yourself?) Depending on how powerful it is, the coil might need to have an additional water cooling system so it doesn't melt itself down.

I know of no circumstances where water cooling of the coil isn't a requirement. Induction furnaces have the ability to achieve temperatures well above that which can melt even platinum, as you know. Copper coils wouldn't stand a chance were it not for cooling.

In my induction power supply, capacitors are also water cooled.

Harold

 

[elfixx]

The cooling unit is already part of the furnace I am buying, I just have to connect water in and out with a pump to circulate the water. The only thing I will have to build is the refractory box itself.

 

[Lou]

Wow, a bit "touchy" to say the least. aren't we Oz?. :lol: :lol:

elfixx: 4metals is the resident expert in Miller process with disposable crucibles. I suggest you PM him, if your interest is for real. If you posted a photo of your induction rig and furnace, that would probably help things, as the scrubber, etc has to be custom fitted to the induction furnace for best results. It is all pretty simple.

Good bye all!. If anyone has any tips on gold inquartation with sodium or magnesium, please PM me, I'm having trouble getting it right!. :lol: 8) :idea: :lol: :shock:

I've had gold-sodium alloy before. It wasn't fun to melt.



Elfix, what I would do is get some kaowool blanket and wrap that around the coil. That's what I did with mine. It won't work for Pt since that'll liquify the kaowool.
Since there's no flame and no air movement, there's minimal concern about silica fume from the fiber blanket. For a platinum induction melter, the absolute best refractory to use is Zircar's Alumina Bubble insulating refractory.

 

[HAuCl4]

Wow, a bit "touchy" to say the least. aren't we Oz?. :lol: :lol:

elfixx: 4metals is the resident expert in Miller process with disposable crucibles. I suggest you PM him, if your interest is for real. If you posted a photo of your induction rig and furnace, that would probably help things, as the scrubber, etc has to be custom fitted to the induction furnace for best results. It is all pretty simple.

Good bye all!. If anyone has any tips on gold inquartation with sodium or magnesium, please PM me, I'm having trouble getting it right!. :lol: 8) :idea: :lol: :shock:

I've had gold-sodium alloy before. It wasn't fun to melt.

I'm going to go out on a limb and think that the parting was very fast!. :lol: