Question aboout sulfuric stripping cells (the science)

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rasanders22

Well-known member
Joined
Feb 14, 2011
Messages
137
I don thave a strippiing cell yet. I do not have enough mataerial to warrent making one. Plus the prosect of having sulfuring around the house with 2 young children worries me. Anyways, Why is there a need to different types of anodes (or cathodes). Cu is needed for gold, while other material is needed for different PM's. I dont know if this is easy to explain or if anyone knows. I am just curious as to why.
 
Keep safe.
Keep all this stuff from the little kids, safety of a process should be studied before even thinking of trying it, also study of process should be well understood, and how to deal with wastes safely, this includes gases that may form from reactions.

All of my processing is done outside and about 600 feet from my house, gases are very corrosive, all chemicals should be kept away from children and pets, fume hoods or outdoors. storing of chemicals is another consideration, and many times these solution will need to set for long periods of time without anyone standing over them.

concentrated sulfuric can be very dangerous, and when using it in electrolysis there will be heating of acids, this can make an acid even more dangerous as hot acids are more potent, sulfuric acid has a very high boiling point, so the sulfur dioxide fumes are not as bad to volatize off the hot acid, as would some of the other acids we use, but when you add electrolysis to this equation you can get these gases forming easier, for one the acids disassociate, hydrogen being positive will flow towards the negative pole cathode, and SO4 being negative will flow towards the anode positive pole, if current gets too high there will be more gassing, just like over charging a battery you can end up with an Explosive mixture of Hydrogen and oxygen, a spark can cause an explosion.

In electrolysis we use different materials as anode and cathode, the anodes will usually dissolve and these metals being positive will flow to (or plate out on the cathode), sometimes we want an inert anode (one that will not react, or will not react very much) copper in the concentrated sulfuric stripping cell is fairly inert as the anode, in electrolysis our cathode will be the collector of the positive metals, sometimes we may want to plate the cathode, other times we may just want it to collect a metal as a fluffy material we can remove easily, other times we may just want the metal to fall to the bottom of the cell and collect it later, here is where In the stripping cell lead is used as cathode.

Please study as before trying any process.

I have not used the stripping cell so take my words with salt.

After studying more ask questions when you get stumped.

Hopefully a member with more experience with the concentrated sulfuric stripping cell will chime in here.

You are doing the right thing studying and asking questions.

Laser steves web site will help with your study, he show's how to build and operate the cell, if you do not want to find the materials around the house or town he also sell the stuff very reasonably, also you can read many many posts he has made that will probably answer more questions on this subject than you could even think of asking.
 
butcher :

For someone who hasn't worked with a striping cell, I must say that you do have a way with words.

Even a noobie like myself can grasp an understanding as to how the electrodes are supposed to work. Most informative.

Thanks

Ray
 
Thanks Butcher.

Ive done some AP with fingers but thats as far as I have gotten. I might venture into a stripping cell but that is a ways away. Is 600 feet away over kill? If I tried to be 600 feet away from my house i would be in my neighbors living room. I think they might mind. :oops:
 
rasanders22 said:
Thanks Butcher.

Ive done some AP with fingers but thats as far as I have gotten. I might venture into a stripping cell but that is a ways away. Is 600 feet away over kill? If I tried to be 600 feet away from my house i would be in my neighbors living room. I think they might mind. :oops:
The idea is to be as far away from other living things, both vegetable & animal, as possible. The gases produced are highly corrosive & are absorbed easily by any aqueous tissue. Protect yourself, of course, but especially protect those completely innocent of "gold fever" 8)
 

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